From 9d9ec8d01443832d4e6d2f46bfd6b3270f390be3 Mon Sep 17 00:00:00 2001 From: Joe Simmons-Talbott Date: Wed, 27 Jul 2022 14:18:54 -0400 Subject: [PATCH 001/142] iio: Add blank lines after declarations. As reported by checkpatch.pl add blank lines after declarations. Signed-off-by: Joe Simmons-Talbott Link: https://lore.kernel.org/r/20220727181855.589052-2-joetalbott@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-buffer.c | 1 + drivers/iio/industrialio-core.c | 7 +++++++ drivers/iio/industrialio-trigger.c | 1 + 3 files changed, 9 insertions(+) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index acc2b6c05d57..47a6e97f8e48 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -940,6 +940,7 @@ struct iio_demux_table { static void iio_buffer_demux_free(struct iio_buffer *buffer) { struct iio_demux_table *p, *q; + list_for_each_entry_safe(p, q, &buffer->demux_list, l) { list_del(&p->l); kfree(p); diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 0f4dbda3b9d3..40ebc63b7919 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -236,6 +236,7 @@ static int iio_sysfs_match_string_with_gaps(const char * const *array, size_t n, struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + return iio_dev_opaque->debugfs_dentry; } EXPORT_SYMBOL_GPL(iio_get_debugfs_dentry); @@ -447,6 +448,7 @@ static const struct file_operations iio_debugfs_reg_fops = { static void iio_device_unregister_debugfs(struct iio_dev *indio_dev) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + debugfs_remove_recursive(iio_dev_opaque->debugfs_dentry); } @@ -1021,6 +1023,7 @@ int __iio_device_attr_init(struct device_attribute *dev_attr, int ret = 0; char *name = NULL; char *full_postfix; + sysfs_attr_init(&dev_attr->attr); /* Build up postfix of __postfix */ @@ -1355,6 +1358,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, if (chan->ext_info) { unsigned int i = 0; + for (ext_info = chan->ext_info; ext_info->name; ext_info++) { ret = __iio_add_chan_devattr(ext_info->name, chan, @@ -1403,6 +1407,7 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct iio_dev *indio_dev = dev_to_iio_dev(dev); + return sysfs_emit(buf, "%s\n", indio_dev->name); } @@ -1412,6 +1417,7 @@ static ssize_t label_show(struct device *dev, struct device_attribute *attr, char *buf) { struct iio_dev *indio_dev = dev_to_iio_dev(dev); + return sysfs_emit(buf, "%s\n", indio_dev->label); } @@ -1777,6 +1783,7 @@ static int iio_chrdev_release(struct inode *inode, struct file *filp) struct iio_dev_opaque *iio_dev_opaque = container_of(inode->i_cdev, struct iio_dev_opaque, chrdev); struct iio_dev *indio_dev = &iio_dev_opaque->indio_dev; + kfree(ib); clear_bit(IIO_BUSY_BIT_POS, &iio_dev_opaque->flags); iio_device_put(indio_dev); diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c index b78814d869b7..6885a186fe27 100644 --- a/drivers/iio/industrialio-trigger.c +++ b/drivers/iio/industrialio-trigger.c @@ -50,6 +50,7 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct iio_trigger *trig = to_iio_trigger(dev); + return sysfs_emit(buf, "%s\n", trig->name); } From 3d4b8291df3b5c9bc62ea8213b5483c4ec852947 Mon Sep 17 00:00:00 2001 From: Joe Simmons-Talbott Date: Wed, 27 Jul 2022 14:18:55 -0400 Subject: [PATCH 002/142] iio: Fix indentation for multiline conditional. As reported by checkpatch.pl make indentation match previous conditional. Signed-off-by: Joe Simmons-Talbott Link: https://lore.kernel.org/r/20220727181855.589052-3-joetalbott@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-buffer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 47a6e97f8e48..228598b82a2f 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -843,8 +843,8 @@ static int iio_verify_update(struct iio_dev *indio_dev, * to verify. */ if (remove_buffer && !insert_buffer && - list_is_singular(&iio_dev_opaque->buffer_list)) - return 0; + list_is_singular(&iio_dev_opaque->buffer_list)) + return 0; modes = indio_dev->modes; From 857f09f605bae6702b5ec9afdc47c6b188d7cdf6 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 27 Jul 2022 17:52:03 +0200 Subject: [PATCH 003/142] dt-bindings: iio: adc: ti,am3359-adc: add ti,am654-adc Document the ti,am654-adc compatible already used in DTS: arch/arm64/boot/dts/ti/k3-am642-evm.dtb: adc: compatible:0: 'ti,am654-adc' is not one of ['ti,am3359-adc', 'ti,am4372-adc'] Signed-off-by: Krzysztof Kozlowski Acked-by: Rob Herring Link: https://lore.kernel.org/r/20220727155203.320929-1-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/ti,am3359-adc.yaml | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/ti,am3359-adc.yaml b/Documentation/devicetree/bindings/iio/adc/ti,am3359-adc.yaml index d6f21d5cccd7..b32be24a9f98 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,am3359-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,am3359-adc.yaml @@ -11,9 +11,14 @@ maintainers: properties: compatible: - enum: - - ti,am3359-adc - - ti,am4372-adc + oneOf: + - enum: + - ti,am3359-adc + - ti,am4372-adc + - items: + - enum: + - ti,am654-adc + - const: ti,am3359-adc '#io-channel-cells': const: 1 From 9e8284501c8d9e2bde4dfcddaf0201ee7cc8f2a7 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Sat, 23 Jul 2022 11:20:30 +0200 Subject: [PATCH 004/142] MAINTAINERS: Update Microchip MCP3911 to Maintained The actual status of the code is Maintained. Signed-off-by: Marcus Folkesson Cc: Kent Gustavsson Cc: Jonathan Cameron Cc: linux-iio Link: https://lore.kernel.org/r/20220723092030.260812-1-marcus.folkesson@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 8a5012ba6ff9..b8b6544ba27c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13405,7 +13405,7 @@ MICROCHIP MCP3911 ADC DRIVER M: Marcus Folkesson M: Kent Gustavsson L: linux-iio@vger.kernel.org -S: Supported +S: Maintained F: Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml F: drivers/iio/adc/mcp3911.c From bd1d558c9c65cf56623a3a237a2998697586c409 Mon Sep 17 00:00:00 2001 From: Martin Larsson Date: Wed, 20 Jul 2022 15:31:54 +0000 Subject: [PATCH 005/142] iio: adc: imx8qxp-adc: propagate regulator_get_voltage error If the ADC vref regulator returns an error, for example, if CONFIG_REGULATOR is not set, the error will be used as a reference voltage. Introduce a guard for negative return values instead of unconditionally casting it to u32. Acked-by: Haibo Chen Signed-off-by: Martin Larsson Reviewed-by: Fabio Estevam Link: https://lore.kernel.org/r/20220720153136.3502440-1-martin.larsson@actia.se Signed-off-by: Jonathan Cameron --- drivers/iio/adc/imx8qxp-adc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/iio/adc/imx8qxp-adc.c b/drivers/iio/adc/imx8qxp-adc.c index e48446784a0a..36777b827165 100644 --- a/drivers/iio/adc/imx8qxp-adc.c +++ b/drivers/iio/adc/imx8qxp-adc.c @@ -202,7 +202,7 @@ static int imx8qxp_adc_read_raw(struct iio_dev *indio_dev, struct imx8qxp_adc *adc = iio_priv(indio_dev); struct device *dev = adc->dev; - u32 ctrl, vref_uv; + u32 ctrl; long ret; switch (mask) { @@ -245,8 +245,10 @@ static int imx8qxp_adc_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - vref_uv = regulator_get_voltage(adc->vref); - *val = vref_uv / 1000; + ret = regulator_get_voltage(adc->vref); + if (ret < 0) + return ret; + *val = ret / 1000; *val2 = 12; return IIO_VAL_FRACTIONAL_LOG2; From af0a61e940f8cea62c3c9a18ff5b3830b16e2087 Mon Sep 17 00:00:00 2001 From: Shreeya Patel Date: Mon, 25 Jul 2022 16:10:49 +0530 Subject: [PATCH 006/142] dt-bindings: Document ltrf216a light sensor bindings Add devicetree bindings for ltrf216a ambient light sensor. Reviewed-by: Rob Herring Signed-off-by: Shreeya Patel Link: https://lore.kernel.org/r/20220725104050.491396-2-shreeya.patel@collabora.com Signed-off-by: Jonathan Cameron --- .../bindings/iio/light/liteon,ltrf216a.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml diff --git a/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml b/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml new file mode 100644 index 000000000000..7de1b0e721ca --- /dev/null +++ b/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/light/liteon,ltrf216a.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LTRF216A Ambient Light Sensor + +maintainers: + - Shreeya Patel + +description: + Ambient light sensing with an i2c interface. + +properties: + compatible: + const: liteon,ltrf216a + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + vdd-supply: + description: Regulator that provides power to the sensor. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + light-sensor@53 { + compatible = "liteon,ltrf216a"; + reg = <0x53>; + vdd-supply = <&vdd_regulator>; + interrupt-parent = <&gpio0>; + interrupts = <5 IRQ_TYPE_LEVEL_LOW>; + }; + }; From 83f0bcd40d5cf88870d2f2bb8b97c772b92a3d1f Mon Sep 17 00:00:00 2001 From: Shreeya Patel Date: Mon, 25 Jul 2022 16:10:50 +0530 Subject: [PATCH 007/142] iio: light: Add support for ltrf216a sensor Add initial support for ltrf216a ambient light sensor. Datasheet: https://gitlab.collabora.com/shreeya/iio/-/blob/master/LTRF216A.pdf Reviewed-by: Andy Shevchenko Co-developed-by: Zhigang Shi Signed-off-by: Zhigang Shi Co-developed-by: Dmitry Osipenko Signed-off-by: Dmitry Osipenko Signed-off-by: Shreeya Patel Link: https://lore.kernel.org/r/20220725104050.491396-3-shreeya.patel@collabora.com Signed-off-by: Jonathan Cameron --- drivers/iio/light/Kconfig | 11 + drivers/iio/light/Makefile | 1 + drivers/iio/light/ltrf216a.c | 537 +++++++++++++++++++++++++++++++++++ 3 files changed, 549 insertions(+) create mode 100644 drivers/iio/light/ltrf216a.c diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 8537e88f02e3..7cf6e8490123 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -331,6 +331,17 @@ config LTR501 This driver can also be built as a module. If so, the module will be called ltr501. +config LTRF216A + tristate "Liteon LTRF216A Light Sensor" + depends on I2C + select REGMAP_I2C + help + If you say Y or M here, you get support for Liteon LTRF216A + Ambient Light Sensor. + + If built as a dynamically linked module, it will be called + ltrf216a. + config LV0104CS tristate "LV0104CS Ambient Light Sensor" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index d10912faf964..6f23817fae6f 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_ISL29125) += isl29125.o obj-$(CONFIG_JSA1212) += jsa1212.o obj-$(CONFIG_SENSORS_LM3533) += lm3533-als.o obj-$(CONFIG_LTR501) += ltr501.o +obj-$(CONFIG_LTRF216A) += ltrf216a.o obj-$(CONFIG_LV0104CS) += lv0104cs.o obj-$(CONFIG_MAX44000) += max44000.o obj-$(CONFIG_MAX44009) += max44009.o diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c new file mode 100644 index 000000000000..e6e24e70d2b9 --- /dev/null +++ b/drivers/iio/light/ltrf216a.c @@ -0,0 +1,537 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * LTRF216A Ambient Light Sensor + * + * Copyright (C) 2022 Collabora, Ltd. + * Author: Shreeya Patel + * + * Copyright (C) 2021 Lite-On Technology Corp (Singapore) + * Author: Shi Zhigang + * + * IIO driver for LTRF216A (7-bit I2C slave address 0x53). + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#define LTRF216A_ALS_RESET_MASK BIT(4) +#define LTRF216A_ALS_DATA_STATUS BIT(3) +#define LTRF216A_ALS_ENABLE_MASK BIT(1) +#define LTRF216A_MAIN_CTRL 0x00 +#define LTRF216A_ALS_MEAS_RES 0x04 +#define LTRF216A_ALS_GAIN 0x05 +#define LTRF216A_PART_ID 0x06 +#define LTRF216A_MAIN_STATUS 0x07 +#define LTRF216A_ALS_CLEAR_DATA_0 0x0a +#define LTRF216A_ALS_CLEAR_DATA_1 0x0b +#define LTRF216A_ALS_CLEAR_DATA_2 0x0c +#define LTRF216A_ALS_DATA_0 0x0d +#define LTRF216A_ALS_DATA_1 0x0e +#define LTRF216A_ALS_DATA_2 0x0f +#define LTRF216A_INT_CFG 0x19 +#define LTRF216A_INT_PST 0x1a +#define LTRF216A_ALS_THRES_UP_0 0x21 +#define LTRF216A_ALS_THRES_UP_1 0x22 +#define LTRF216A_ALS_THRES_UP_2 0x23 +#define LTRF216A_ALS_THRES_LOW_0 0x24 +#define LTRF216A_ALS_THRES_LOW_1 0x25 +#define LTRF216A_ALS_THRES_LOW_2 0x26 +#define LTRF216A_ALS_READ_DATA_DELAY_US 20000 + +static const int ltrf216a_int_time_available[][2] = { + { 0, 400000 }, + { 0, 200000 }, + { 0, 100000 }, + { 0, 50000 }, + { 0, 25000 }, +}; + +static const int ltrf216a_int_time_reg[][2] = { + { 400, 0x03 }, + { 200, 0x13 }, + { 100, 0x22 }, + { 50, 0x31 }, + { 25, 0x40 }, +}; + +/* + * Window Factor is needed when the device is under Window glass + * with coated tinted ink. This is to compensate for the light loss + * due to the lower transmission rate of the window glass and helps + * in calculating lux. + */ +#define LTRF216A_WIN_FAC 1 + +struct ltrf216a_data { + struct regmap *regmap; + struct i2c_client *client; + u32 int_time; + u16 int_time_fac; + u8 als_gain_fac; + /* + * Protects regmap accesses and makes sure integration time + * remains constant during the measurement of lux. + */ + struct mutex lock; +}; + +static const struct iio_chan_spec ltrf216a_channels[] = { + { + .type = IIO_LIGHT, + .info_mask_separate = + BIT(IIO_CHAN_INFO_PROCESSED) | + BIT(IIO_CHAN_INFO_INT_TIME), + .info_mask_separate_available = + BIT(IIO_CHAN_INFO_INT_TIME), + }, +}; + +static void ltrf216a_reset(struct iio_dev *indio_dev) +{ + struct ltrf216a_data *data = iio_priv(indio_dev); + + /* reset sensor, chip fails to respond to this, so ignore any errors */ + regmap_write(data->regmap, LTRF216A_MAIN_CTRL, LTRF216A_ALS_RESET_MASK); + + /* reset time */ + usleep_range(1000, 2000); +} + +static int ltrf216a_enable(struct iio_dev *indio_dev) +{ + struct ltrf216a_data *data = iio_priv(indio_dev); + struct device *dev = &data->client->dev; + int ret; + + /* enable sensor */ + ret = regmap_set_bits(data->regmap, + LTRF216A_MAIN_CTRL, LTRF216A_ALS_ENABLE_MASK); + if (ret) { + dev_err(dev, "failed to enable sensor: %d\n", ret); + return ret; + } + + /* sleep for one integration cycle after enabling the device */ + msleep(ltrf216a_int_time_reg[0][0]); + + return 0; +} + +static int ltrf216a_disable(struct iio_dev *indio_dev) +{ + struct ltrf216a_data *data = iio_priv(indio_dev); + struct device *dev = &data->client->dev; + int ret; + + ret = regmap_write(data->regmap, LTRF216A_MAIN_CTRL, 0); + if (ret) + dev_err(dev, "failed to disable sensor: %d\n", ret); + + return ret; +} + +static void ltrf216a_cleanup(void *data) +{ + struct iio_dev *indio_dev = data; + + ltrf216a_disable(indio_dev); +} + +static int ltrf216a_set_int_time(struct ltrf216a_data *data, int itime) +{ + struct device *dev = &data->client->dev; + unsigned int i; + u8 reg_val; + int ret; + + for (i = 0; i < ARRAY_SIZE(ltrf216a_int_time_available); i++) { + if (ltrf216a_int_time_available[i][1] == itime) + break; + } + if (i == ARRAY_SIZE(ltrf216a_int_time_available)) + return -EINVAL; + + reg_val = ltrf216a_int_time_reg[i][1]; + + ret = regmap_write(data->regmap, LTRF216A_ALS_MEAS_RES, reg_val); + if (ret) { + dev_err(dev, "failed to set integration time: %d\n", ret); + return ret; + } + + data->int_time_fac = ltrf216a_int_time_reg[i][0]; + data->int_time = itime; + + return 0; +} + +static int ltrf216a_get_int_time(struct ltrf216a_data *data, + int *val, int *val2) +{ + *val = 0; + *val2 = data->int_time; + return IIO_VAL_INT_PLUS_MICRO; +} + +static int ltrf216a_set_power_state(struct ltrf216a_data *data, bool on) +{ + struct device *dev = &data->client->dev; + int ret = 0; + + if (on) { + ret = pm_runtime_resume_and_get(dev); + if (ret) { + dev_err(dev, "failed to resume runtime PM: %d\n", ret); + return ret; + } + } else { + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + } + + return ret; +} + +static int ltrf216a_read_data(struct ltrf216a_data *data, u8 addr) +{ + struct device *dev = &data->client->dev; + int ret, val; + u8 buf[3]; + + ret = regmap_read_poll_timeout(data->regmap, LTRF216A_MAIN_STATUS, + val, val & LTRF216A_ALS_DATA_STATUS, + LTRF216A_ALS_READ_DATA_DELAY_US, + LTRF216A_ALS_READ_DATA_DELAY_US * 50); + if (ret) { + dev_err(dev, "failed to wait for measurement data: %d\n", ret); + return ret; + } + + ret = regmap_bulk_read(data->regmap, addr, buf, sizeof(buf)); + if (ret) { + dev_err(dev, "failed to read measurement data: %d\n", ret); + return ret; + } + + return get_unaligned_le24(&buf[0]); +} + +static int ltrf216a_get_lux(struct ltrf216a_data *data) +{ + int ret, greendata; + u64 lux, div; + + ret = ltrf216a_set_power_state(data, true); + if (ret) + return ret; + + greendata = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0); + if (greendata < 0) + return greendata; + + ltrf216a_set_power_state(data, false); + + lux = greendata * 45 * LTRF216A_WIN_FAC * 100; + div = data->als_gain_fac * data->int_time_fac * 100; + + return div_u64(lux, div); +} + +static int ltrf216a_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct ltrf216a_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + mutex_lock(&data->lock); + ret = ltrf216a_get_lux(data); + mutex_unlock(&data->lock); + if (ret < 0) + return ret; + *val = ret; + return IIO_VAL_INT; + case IIO_CHAN_INFO_INT_TIME: + mutex_lock(&data->lock); + ret = ltrf216a_get_int_time(data, val, val2); + mutex_unlock(&data->lock); + return ret; + default: + return -EINVAL; + } +} + +static int ltrf216a_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int val, + int val2, long mask) +{ + struct ltrf216a_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + if (val != 0) + return -EINVAL; + mutex_lock(&data->lock); + ret = ltrf216a_set_int_time(data, val2); + mutex_unlock(&data->lock); + return ret; + default: + return -EINVAL; + } +} + +static int ltrf216a_read_available(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + *length = ARRAY_SIZE(ltrf216a_int_time_available) * 2; + *vals = (const int *)ltrf216a_int_time_available; + *type = IIO_VAL_INT_PLUS_MICRO; + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } +} + +static const struct iio_info ltrf216a_info = { + .read_raw = ltrf216a_read_raw, + .write_raw = ltrf216a_write_raw, + .read_avail = ltrf216a_read_available, +}; + +static bool ltrf216a_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case LTRF216A_MAIN_CTRL: + case LTRF216A_ALS_MEAS_RES: + case LTRF216A_ALS_GAIN: + case LTRF216A_PART_ID: + case LTRF216A_MAIN_STATUS: + case LTRF216A_ALS_CLEAR_DATA_0: + case LTRF216A_ALS_CLEAR_DATA_1: + case LTRF216A_ALS_CLEAR_DATA_2: + case LTRF216A_ALS_DATA_0: + case LTRF216A_ALS_DATA_1: + case LTRF216A_ALS_DATA_2: + case LTRF216A_INT_CFG: + case LTRF216A_INT_PST: + case LTRF216A_ALS_THRES_UP_0: + case LTRF216A_ALS_THRES_UP_1: + case LTRF216A_ALS_THRES_UP_2: + case LTRF216A_ALS_THRES_LOW_0: + case LTRF216A_ALS_THRES_LOW_1: + case LTRF216A_ALS_THRES_LOW_2: + return true; + default: + return false; + } +} + +static bool ltrf216a_writable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case LTRF216A_MAIN_CTRL: + case LTRF216A_ALS_MEAS_RES: + case LTRF216A_ALS_GAIN: + case LTRF216A_INT_CFG: + case LTRF216A_INT_PST: + case LTRF216A_ALS_THRES_UP_0: + case LTRF216A_ALS_THRES_UP_1: + case LTRF216A_ALS_THRES_UP_2: + case LTRF216A_ALS_THRES_LOW_0: + case LTRF216A_ALS_THRES_LOW_1: + case LTRF216A_ALS_THRES_LOW_2: + return true; + default: + return false; + } +} + +static bool ltrf216a_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case LTRF216A_MAIN_STATUS: + case LTRF216A_ALS_CLEAR_DATA_0: + case LTRF216A_ALS_CLEAR_DATA_1: + case LTRF216A_ALS_CLEAR_DATA_2: + case LTRF216A_ALS_DATA_0: + case LTRF216A_ALS_DATA_1: + case LTRF216A_ALS_DATA_2: + return true; + default: + return false; + } +} + +static bool ltrf216a_precious_reg(struct device *dev, unsigned int reg) +{ + return reg == LTRF216A_MAIN_STATUS; +} + +static const struct regmap_config ltrf216a_regmap_config = { + .name = "ltrf216a", + .reg_bits = 8, + .val_bits = 8, + .cache_type = REGCACHE_RBTREE, + .max_register = LTRF216A_ALS_THRES_LOW_2, + .readable_reg = ltrf216a_readable_reg, + .writeable_reg = ltrf216a_writable_reg, + .volatile_reg = ltrf216a_volatile_reg, + .precious_reg = ltrf216a_precious_reg, + .disable_locking = true, +}; + +static int ltrf216a_probe(struct i2c_client *client) +{ + struct ltrf216a_data *data; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + + data->regmap = devm_regmap_init_i2c(client, <rf216a_regmap_config); + if (IS_ERR(data->regmap)) + return dev_err_probe(&client->dev, PTR_ERR(data->regmap), + "regmap initialization failed\n"); + + i2c_set_clientdata(client, indio_dev); + data->client = client; + + mutex_init(&data->lock); + + indio_dev->info = <rf216a_info; + indio_dev->name = "ltrf216a"; + indio_dev->channels = ltrf216a_channels; + indio_dev->num_channels = ARRAY_SIZE(ltrf216a_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + + ret = pm_runtime_set_active(&client->dev); + if (ret) + return ret; + + /* reset sensor, chip fails to respond to this, so ignore any errors */ + ltrf216a_reset(indio_dev); + + ret = regmap_reinit_cache(data->regmap, <rf216a_regmap_config); + if (ret) + return dev_err_probe(&client->dev, ret, + "failed to reinit regmap cache\n"); + + ret = ltrf216a_enable(indio_dev); + if (ret) + return ret; + + ret = devm_add_action_or_reset(&client->dev, ltrf216a_cleanup, + indio_dev); + if (ret) + return ret; + + ret = devm_pm_runtime_enable(&client->dev); + if (ret) + return dev_err_probe(&client->dev, ret, + "failed to enable runtime PM\n"); + + pm_runtime_set_autosuspend_delay(&client->dev, 1000); + pm_runtime_use_autosuspend(&client->dev); + + data->int_time = 100000; + data->int_time_fac = 100; + data->als_gain_fac = 3; + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static int ltrf216a_runtime_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct ltrf216a_data *data = iio_priv(indio_dev); + int ret; + + ret = ltrf216a_disable(indio_dev); + if (ret) + return ret; + + regcache_cache_only(data->regmap, true); + + return 0; +} + +static int ltrf216a_runtime_resume(struct device *dev) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct ltrf216a_data *data = iio_priv(indio_dev); + int ret; + + regcache_cache_only(data->regmap, false); + regcache_mark_dirty(data->regmap); + ret = regcache_sync(data->regmap); + if (ret) + goto cache_only; + + ret = ltrf216a_enable(indio_dev); + if (ret) + goto cache_only; + + return 0; + +cache_only: + regcache_cache_only(data->regmap, true); + + return ret; +} + +static DEFINE_RUNTIME_DEV_PM_OPS(ltrf216a_pm_ops, ltrf216a_runtime_suspend, + ltrf216a_runtime_resume, NULL); + +static const struct i2c_device_id ltrf216a_id[] = { + { "ltrf216a" }, + {} +}; +MODULE_DEVICE_TABLE(i2c, ltrf216a_id); + +static const struct of_device_id ltrf216a_of_match[] = { + { .compatible = "liteon,ltrf216a" }, + { .compatible = "ltr,ltrf216a" }, + {} +}; +MODULE_DEVICE_TABLE(of, ltrf216a_of_match); + +static struct i2c_driver ltrf216a_driver = { + .driver = { + .name = "ltrf216a", + .pm = pm_ptr(<rf216a_pm_ops), + .of_match_table = ltrf216a_of_match, + }, + .probe_new = ltrf216a_probe, + .id_table = ltrf216a_id, +}; +module_i2c_driver(ltrf216a_driver); + +MODULE_AUTHOR("Shreeya Patel "); +MODULE_AUTHOR("Shi Zhigang "); +MODULE_DESCRIPTION("LTRF216A ambient light sensor driver"); +MODULE_LICENSE("GPL"); From 3b7eee5b38755501b8cc09b8f3b46c005af40a50 Mon Sep 17 00:00:00 2001 From: ChiYuan Huang Date: Tue, 19 Jul 2022 22:52:43 +0800 Subject: [PATCH 008/142] dt-bindings: iio: adc: Add rtq6056 adc support Add the documentation for Richtek rtq6056. Signed-off-by: ChiYuan Huang Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/1658242365-27797-2-git-send-email-u0084500@gmail.com Signed-off-by: Jonathan Cameron --- .../bindings/iio/adc/richtek,rtq6056.yaml | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/richtek,rtq6056.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/richtek,rtq6056.yaml b/Documentation/devicetree/bindings/iio/adc/richtek,rtq6056.yaml new file mode 100644 index 000000000000..88e008629ea8 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/richtek,rtq6056.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/richtek,rtq6056.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RTQ6056 Bi-Directional Current and Power Monitor with 16-bit ADC + +maintainers: + - ChiYuan Huang + +description: | + The RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus + interface, and the device provides full information for system by reading + out the loading current and power. + + The device monitors both of the drops across sense resistor and the BUS + voltage, converts into the current in amperes, and power in watts through + internal analog-to-digital converter ADC. The programmable calibration, + adjustable conversion time, and averaging function are also built in for + more design flexibility. + + Datasheet is available at + https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf + +properties: + compatible: + const: richtek,rtq6056 + + reg: + maxItems: 1 + + "#io-channel-cells": + const: 1 + + shunt-resistor-micro-ohms: + description: Shunt IN+/IN- sensing node resistor + +required: + - compatible + - reg + - "#io-channel-cells" + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + adc@40 { + compatible = "richtek,rtq6056"; + reg = <0x40>; + #io-channel-cells = <1>; + }; + }; From 4396f45d211b6aa2f3a821f0a3a77c992335724b Mon Sep 17 00:00:00 2001 From: ChiYuan Huang Date: Tue, 19 Jul 2022 22:52:44 +0800 Subject: [PATCH 009/142] iio: adc: Add rtq6056 support Add Richtek rtq6056 supporting. It can be used for the system to monitor load current and power with 16-bit resolution. Signed-off-by: ChiYuan Huang Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/1658242365-27797-3-git-send-email-u0084500@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 15 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/rtq6056.c | 661 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 677 insertions(+) create mode 100644 drivers/iio/adc/rtq6056.c diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 7fe5930891e0..5a3e8d9ae26c 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -919,6 +919,21 @@ config ROCKCHIP_SARADC To compile this driver as a module, choose M here: the module will be called rockchip_saradc. +config RICHTEK_RTQ6056 + tristate "Richtek RTQ6056 Current and Power Monitor ADC" + depends on I2C + select REGMAP_I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + Say yes here to enable RQT6056 ADC support. + RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus + compatible interface, and the device provides full information for + system by reading out the load current and power. + + This driver can also be built as a module. If so, the module will be + called rtq6056. + config RZG2L_ADC tristate "Renesas RZ/G2L ADC driver" depends on ARCH_RZG2L || COMPILE_TEST diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 1772a549a3c8..c1a861a978ad 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -85,6 +85,7 @@ obj-$(CONFIG_QCOM_PM8XXX_XOADC) += qcom-pm8xxx-xoadc.o obj-$(CONFIG_RCAR_GYRO_ADC) += rcar-gyroadc.o obj-$(CONFIG_RN5T618_ADC) += rn5t618-adc.o obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o +obj-$(CONFIG_RICHTEK_RTQ6056) += rtq6056.o obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o obj-$(CONFIG_SPEAR_ADC) += spear_adc.o diff --git a/drivers/iio/adc/rtq6056.c b/drivers/iio/adc/rtq6056.c new file mode 100644 index 000000000000..c1b2e8dc9a26 --- /dev/null +++ b/drivers/iio/adc/rtq6056.c @@ -0,0 +1,661 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 Richtek Technology Corp. + * + * ChiYuan Huang + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#define RTQ6056_REG_CONFIG 0x00 +#define RTQ6056_REG_SHUNTVOLT 0x01 +#define RTQ6056_REG_BUSVOLT 0x02 +#define RTQ6056_REG_POWER 0x03 +#define RTQ6056_REG_CURRENT 0x04 +#define RTQ6056_REG_CALIBRATION 0x05 +#define RTQ6056_REG_MASKENABLE 0x06 +#define RTQ6056_REG_ALERTLIMIT 0x07 +#define RTQ6056_REG_MANUFACTID 0xFE +#define RTQ6056_REG_DIEID 0xFF + +#define RTQ6056_VENDOR_ID 0x1214 +#define RTQ6056_DEFAULT_CONFIG 0x4127 +#define RTQ6056_CONT_ALLON 7 + +enum { + RTQ6056_CH_VSHUNT = 0, + RTQ6056_CH_VBUS, + RTQ6056_CH_POWER, + RTQ6056_CH_CURRENT, + RTQ6056_MAX_CHANNEL +}; + +enum { + F_OPMODE = 0, + F_VSHUNTCT, + F_VBUSCT, + F_AVG, + F_RESET, + F_MAX_FIELDS +}; + +struct rtq6056_priv { + struct device *dev; + struct regmap *regmap; + struct regmap_field *rm_fields[F_MAX_FIELDS]; + u32 shunt_resistor_uohm; + int vshuntct_us; + int vbusct_us; + int avg_sample; +}; + +static const struct reg_field rtq6056_reg_fields[F_MAX_FIELDS] = { + [F_OPMODE] = REG_FIELD(RTQ6056_REG_CONFIG, 0, 2), + [F_VSHUNTCT] = REG_FIELD(RTQ6056_REG_CONFIG, 3, 5), + [F_VBUSCT] = REG_FIELD(RTQ6056_REG_CONFIG, 6, 8), + [F_AVG] = REG_FIELD(RTQ6056_REG_CONFIG, 9, 11), + [F_RESET] = REG_FIELD(RTQ6056_REG_CONFIG, 15, 15), +}; + +static const struct iio_chan_spec rtq6056_channels[RTQ6056_MAX_CHANNEL + 1] = { + { + .type = IIO_VOLTAGE, + .indexed = 1, + .channel = 0, + .address = RTQ6056_REG_SHUNTVOLT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .scan_index = 0, + .scan_type = { + .sign = 's', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_CPU, + }, + }, + { + .type = IIO_VOLTAGE, + .indexed = 1, + .channel = 1, + .address = RTQ6056_REG_BUSVOLT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .scan_index = 1, + .scan_type = { + .sign = 'u', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_CPU, + }, + }, + { + .type = IIO_POWER, + .indexed = 1, + .channel = 2, + .address = RTQ6056_REG_POWER, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .scan_index = 2, + .scan_type = { + .sign = 'u', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_CPU, + }, + }, + { + .type = IIO_CURRENT, + .indexed = 1, + .channel = 3, + .address = RTQ6056_REG_CURRENT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), + .scan_index = 3, + .scan_type = { + .sign = 's', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_CPU, + }, + }, + IIO_CHAN_SOFT_TIMESTAMP(RTQ6056_MAX_CHANNEL), +}; + +static int rtq6056_adc_read_channel(struct rtq6056_priv *priv, + struct iio_chan_spec const *ch, + int *val) +{ + struct device *dev = priv->dev; + unsigned int addr = ch->address; + unsigned int regval; + int ret; + + pm_runtime_get_sync(dev); + ret = regmap_read(priv->regmap, addr, ®val); + pm_runtime_mark_last_busy(dev); + pm_runtime_put(dev); + if (ret) + return ret; + + /* Power and VBUS is unsigned 16-bit, others are signed 16-bit */ + if (addr == RTQ6056_REG_BUSVOLT || addr == RTQ6056_REG_POWER) + *val = regval; + else + *val = sign_extend32(regval, 16); + + return IIO_VAL_INT; +} + +static int rtq6056_adc_read_scale(struct iio_chan_spec const *ch, int *val, + int *val2) +{ + switch (ch->address) { + case RTQ6056_REG_SHUNTVOLT: + /* VSHUNT lsb 2.5uV */ + *val = 2500; + *val2 = 1000000; + return IIO_VAL_FRACTIONAL; + case RTQ6056_REG_BUSVOLT: + /* VBUS lsb 1.25mV */ + *val = 1250; + *val2 = 1000; + return IIO_VAL_FRACTIONAL; + case RTQ6056_REG_POWER: + /* Power lsb 25mW */ + *val = 25; + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +/* + * Sample frequency for channel VSHUNT and VBUS. The indices correspond + * with the bit value expected by the chip. And it can be found at + * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf + */ +static const int rtq6056_samp_freq_list[] = { + 7194, 4926, 3717, 1904, 964, 485, 243, 122, +}; + +static int rtq6056_adc_set_samp_freq(struct rtq6056_priv *priv, + struct iio_chan_spec const *ch, int val) +{ + struct regmap_field *rm_field; + unsigned int selector; + int *ct, ret; + + if (val > 7194 || val < 122) + return -EINVAL; + + if (ch->address == RTQ6056_REG_SHUNTVOLT) { + rm_field = priv->rm_fields[F_VSHUNTCT]; + ct = &priv->vshuntct_us; + } else if (ch->address == RTQ6056_REG_BUSVOLT) { + rm_field = priv->rm_fields[F_VBUSCT]; + ct = &priv->vbusct_us; + } else + return -EINVAL; + + selector = find_closest_descending(val, rtq6056_samp_freq_list, + ARRAY_SIZE(rtq6056_samp_freq_list)); + + ret = regmap_field_write(rm_field, selector); + if (ret) + return ret; + + *ct = 1000000 / rtq6056_samp_freq_list[selector]; + + return 0; +} + +/* + * Available averaging rate for rtq6056. The indices correspond with the bit + * value expected by the chip. And it can be found at + * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf + */ +static const int rtq6056_avg_sample_list[] = { + 1, 4, 16, 64, 128, 256, 512, 1024, +}; + +static int rtq6056_adc_set_average(struct rtq6056_priv *priv, int val) +{ + unsigned int selector; + int ret; + + if (val > 1024 || val < 1) + return -EINVAL; + + selector = find_closest(val, rtq6056_avg_sample_list, + ARRAY_SIZE(rtq6056_avg_sample_list)); + + ret = regmap_field_write(priv->rm_fields[F_AVG], selector); + if (ret) + return ret; + + priv->avg_sample = rtq6056_avg_sample_list[selector]; + + return 0; +} + +static int rtq6056_adc_get_sample_freq(struct rtq6056_priv *priv, + struct iio_chan_spec const *ch, int *val) +{ + int sample_time; + + if (ch->address == RTQ6056_REG_SHUNTVOLT) + sample_time = priv->vshuntct_us; + else if (ch->address == RTQ6056_REG_BUSVOLT) + sample_time = priv->vbusct_us; + else { + sample_time = priv->vshuntct_us + priv->vbusct_us; + sample_time *= priv->avg_sample; + } + + *val = 1000000 / sample_time; + + return IIO_VAL_INT; +} + +static int rtq6056_adc_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct rtq6056_priv *priv = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + return rtq6056_adc_read_channel(priv, chan, val); + case IIO_CHAN_INFO_SCALE: + return rtq6056_adc_read_scale(chan, val, val2); + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + *val = priv->avg_sample; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SAMP_FREQ: + return rtq6056_adc_get_sample_freq(priv, chan, val); + default: + return -EINVAL; + } +} + +static int rtq6056_adc_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + *vals = rtq6056_samp_freq_list; + *type = IIO_VAL_INT; + *length = ARRAY_SIZE(rtq6056_samp_freq_list); + return IIO_AVAIL_LIST; + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + *vals = rtq6056_avg_sample_list; + *type = IIO_VAL_INT; + *length = ARRAY_SIZE(rtq6056_avg_sample_list); + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } +} + +static int rtq6056_adc_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int val, + int val2, long mask) +{ + struct rtq6056_priv *priv = iio_priv(indio_dev); + int ret; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + ret = rtq6056_adc_set_samp_freq(priv, chan, val); + break; + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + ret = rtq6056_adc_set_average(priv, val); + break; + default: + ret = -EINVAL; + break; + } + + iio_device_release_direct_mode(indio_dev); + + return ret; +} + +static const char *rtq6056_channel_labels[RTQ6056_MAX_CHANNEL] = { + [RTQ6056_CH_VSHUNT] = "Vshunt", + [RTQ6056_CH_VBUS] = "Vbus", + [RTQ6056_CH_POWER] = "Power", + [RTQ6056_CH_CURRENT] = "Current", +}; + +static int rtq6056_adc_read_label(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + char *label) +{ + return sysfs_emit(label, "%s\n", rtq6056_channel_labels[chan->channel]); +} + +static int rtq6056_set_shunt_resistor(struct rtq6056_priv *priv, + int resistor_uohm) +{ + unsigned int calib_val; + int ret; + + if (resistor_uohm <= 0) { + dev_err(priv->dev, "Invalid resistor [%d]\n", resistor_uohm); + return -EINVAL; + } + + /* calibration = 5120000 / (Rshunt (uOhm) * current lsb (1mA)) */ + calib_val = 5120000 / resistor_uohm; + ret = regmap_write(priv->regmap, RTQ6056_REG_CALIBRATION, calib_val); + if (ret) + return ret; + + priv->shunt_resistor_uohm = resistor_uohm; + + return 0; +} + +static ssize_t shunt_resistor_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rtq6056_priv *priv = iio_priv(dev_to_iio_dev(dev)); + int vals[2] = { priv->shunt_resistor_uohm, 1000000 }; + + return iio_format_value(buf, IIO_VAL_FRACTIONAL, 1, vals); +} + +static ssize_t shunt_resistor_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct rtq6056_priv *priv = iio_priv(indio_dev); + int val, val_fract, ret; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + + ret = iio_str_to_fixpoint(buf, 100000, &val, &val_fract); + if (ret) + goto out_store; + + ret = rtq6056_set_shunt_resistor(priv, val * 1000000 + val_fract); + +out_store: + iio_device_release_direct_mode(indio_dev); + + return ret ?: len; +} + +static IIO_DEVICE_ATTR_RW(shunt_resistor, 0); + +static struct attribute *rtq6056_attributes[] = { + &iio_dev_attr_shunt_resistor.dev_attr.attr, + NULL +}; + +static const struct attribute_group rtq6056_attribute_group = { + .attrs = rtq6056_attributes, +}; + +static const struct iio_info rtq6056_info = { + .attrs = &rtq6056_attribute_group, + .read_raw = rtq6056_adc_read_raw, + .read_avail = rtq6056_adc_read_avail, + .write_raw = rtq6056_adc_write_raw, + .read_label = rtq6056_adc_read_label, +}; + +static irqreturn_t rtq6056_buffer_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct rtq6056_priv *priv = iio_priv(indio_dev); + struct device *dev = priv->dev; + struct { + u16 vals[RTQ6056_MAX_CHANNEL]; + s64 timestamp __aligned(8); + } data; + unsigned int raw; + int i = 0, bit, ret; + + memset(&data, 0, sizeof(data)); + + pm_runtime_get_sync(dev); + + for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) { + unsigned int addr = rtq6056_channels[bit].address; + + ret = regmap_read(priv->regmap, addr, &raw); + if (ret) + goto out; + + data.vals[i++] = raw; + } + + iio_push_to_buffers_with_timestamp(indio_dev, &data, iio_get_time_ns(indio_dev)); + +out: + pm_runtime_mark_last_busy(dev); + pm_runtime_put(dev); + + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static void rtq6056_enter_shutdown_state(void *dev) +{ + struct rtq6056_priv *priv = dev_get_drvdata(dev); + + /* Enter shutdown state */ + regmap_field_write(priv->rm_fields[F_OPMODE], 0); +} + +static bool rtq6056_is_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case RTQ6056_REG_CONFIG ... RTQ6056_REG_ALERTLIMIT: + case RTQ6056_REG_MANUFACTID ... RTQ6056_REG_DIEID: + return true; + default: + return false; + } +} + +static bool rtq6056_is_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case RTQ6056_REG_CONFIG: + case RTQ6056_REG_CALIBRATION ... RTQ6056_REG_ALERTLIMIT: + return true; + default: + return false; + } +} + +static const struct regmap_config rtq6056_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .val_format_endian = REGMAP_ENDIAN_BIG, + .max_register = RTQ6056_REG_DIEID, + .readable_reg = rtq6056_is_readable_reg, + .writeable_reg = rtq6056_is_writeable_reg, +}; + +static int rtq6056_probe(struct i2c_client *i2c) +{ + struct iio_dev *indio_dev; + struct rtq6056_priv *priv; + struct device *dev = &i2c->dev; + struct regmap *regmap; + unsigned int vendor_id, shunt_resistor_uohm; + int ret; + + if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_WORD_DATA)) + return -EOPNOTSUPP; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*priv)); + if (!indio_dev) + return -ENOMEM; + + priv = iio_priv(indio_dev); + priv->dev = dev; + priv->vshuntct_us = priv->vbusct_us = 1037; + priv->avg_sample = 1; + i2c_set_clientdata(i2c, priv); + + regmap = devm_regmap_init_i2c(i2c, &rtq6056_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), + "Failed to init regmap\n"); + + priv->regmap = regmap; + + ret = regmap_read(regmap, RTQ6056_REG_MANUFACTID, &vendor_id); + if (ret) + return dev_err_probe(dev, ret, + "Failed to get manufacturer info\n"); + + if (vendor_id != RTQ6056_VENDOR_ID) + return dev_err_probe(dev, -ENODEV, + "Invalid vendor id 0x%04x\n", vendor_id); + + ret = devm_regmap_field_bulk_alloc(dev, regmap, priv->rm_fields, + rtq6056_reg_fields, F_MAX_FIELDS); + if (ret) + return dev_err_probe(dev, ret, "Failed to init regmap field\n"); + + /* + * By default, configure average sample as 1, bus and shunt conversion + * time as 1037 microsecond, and operating mode to all on. + */ + ret = regmap_write(regmap, RTQ6056_REG_CONFIG, RTQ6056_DEFAULT_CONFIG); + if (ret) + return dev_err_probe(dev, ret, + "Failed to enable continuous sensing\n"); + + ret = devm_add_action_or_reset(dev, rtq6056_enter_shutdown_state, dev); + if (ret) + return ret; + + pm_runtime_set_autosuspend_delay(dev, MSEC_PER_SEC); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_active(dev); + pm_runtime_mark_last_busy(dev); + ret = devm_pm_runtime_enable(dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable pm_runtime\n"); + + /* By default, use 2000 micro-Ohm resistor */ + shunt_resistor_uohm = 2000; + device_property_read_u32(dev, "shunt-resistor-micro-ohms", + &shunt_resistor_uohm); + + ret = rtq6056_set_shunt_resistor(priv, shunt_resistor_uohm); + if (ret) + return dev_err_probe(dev, ret, + "Failed to init shunt resistor\n"); + + indio_dev->name = "rtq6056"; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = rtq6056_channels; + indio_dev->num_channels = ARRAY_SIZE(rtq6056_channels); + indio_dev->info = &rtq6056_info; + + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, + rtq6056_buffer_trigger_handler, + NULL); + if (ret) + return dev_err_probe(dev, ret, + "Failed to allocate iio trigger buffer\n"); + + return devm_iio_device_register(dev, indio_dev); +} + +static int rtq6056_runtime_suspend(struct device *dev) +{ + struct rtq6056_priv *priv = dev_get_drvdata(dev); + + /* Configure to shutdown mode */ + return regmap_field_write(priv->rm_fields[F_OPMODE], 0); +} + +static int rtq6056_runtime_resume(struct device *dev) +{ + struct rtq6056_priv *priv = dev_get_drvdata(dev); + int sample_rdy_time_us, ret; + + ret = regmap_field_write(priv->rm_fields[F_OPMODE], RTQ6056_CONT_ALLON); + if (ret) + return ret; + + sample_rdy_time_us = priv->vbusct_us + priv->vshuntct_us; + sample_rdy_time_us *= priv->avg_sample; + + usleep_range(sample_rdy_time_us, sample_rdy_time_us + 100); + + return 0; +} + +static DEFINE_RUNTIME_DEV_PM_OPS(rtq6056_pm_ops, rtq6056_runtime_suspend, + rtq6056_runtime_resume, NULL); + +static const struct of_device_id rtq6056_device_match[] = { + { .compatible = "richtek,rtq6056" }, + {} +}; +MODULE_DEVICE_TABLE(of, rtq6056_device_match); + +static struct i2c_driver rtq6056_driver = { + .driver = { + .name = "rtq6056", + .of_match_table = rtq6056_device_match, + .pm = pm_ptr(&rtq6056_pm_ops), + }, + .probe_new = rtq6056_probe, +}; +module_i2c_driver(rtq6056_driver); + +MODULE_AUTHOR("ChiYuan Huang "); +MODULE_DESCRIPTION("Richtek RTQ6056 Driver"); +MODULE_LICENSE("GPL v2"); From 7898f31b0e7a6ba1ec9c7391e7ece9e31dd93262 Mon Sep 17 00:00:00 2001 From: ChiYuan Huang Date: Tue, 19 Jul 2022 22:52:45 +0800 Subject: [PATCH 010/142] Documentation: ABI: testing: rtq6056: Update ABI docs Add documentation for the usage of voltage channel integration time. Signed-off-by: ChiYuan Huang Link: https://lore.kernel.org/r/1658242365-27797-4-git-send-email-u0084500@gmail.com Signed-off-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-iio | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index e81ba6f5e1c8..7faec5b3a553 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -2038,3 +2038,14 @@ Description: Available range for the forced calibration value, expressed as: - a range specified as "[min step max]" + +What: /sys/bus/iio/devices/iio:deviceX/in_voltageX_sampling_frequency +What: /sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency +What: /sys/bus/iio/devices/iio:deviceX/in_currentZ_sampling_frequency +KernelVersion: 5.20 +Contact: linux-iio@vger.kernel.org +Description: + Some devices have separate controls of sampling frequency for + individual channels. If multiple channels are enabled in a scan, + then the sampling_frequency of the scan may be computed from the + per channel sampling frequencies. From 1bfb86d97a9fa607ab9bab4b28784cac7064420c Mon Sep 17 00:00:00 2001 From: Joe Simmons-Talbott Date: Sun, 31 Jul 2022 12:01:20 -0400 Subject: [PATCH 011/142] iio: Add names for function definition arguments. As reported by checkpatch.pl add missing names for function definition arguments. Signed-off-by: Joe Simmons-Talbott Link: https://lore.kernel.org/r/20220731160120.4831-1-joetalbott@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-event.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index b5e059e15b0a..0e2056894965 100644 --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -354,9 +354,10 @@ static int iio_device_add_event(struct iio_dev *indio_dev, enum iio_shared_by shared_by, const unsigned long *mask) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); - ssize_t (*show)(struct device *, struct device_attribute *, char *); - ssize_t (*store)(struct device *, struct device_attribute *, - const char *, size_t); + ssize_t (*show)(struct device *dev, struct device_attribute *attr, + char *buf); + ssize_t (*store)(struct device *dev, struct device_attribute *attr, + const char *buf, size_t len); unsigned int attrcount = 0; unsigned int i; char *postfix; From bb73d5d9164c57c4bb916739a98e5cd8e0a5ed8c Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:37 +0300 Subject: [PATCH 012/142] iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX All ADC HW versions handled by this driver (SAMA5D2, SAM9X60, SAMA7G5) have MR.TRACKTIM on 4 bits. Fix AT91_SAMA5D2_MR_TRACKTIM_MAX to reflect this. Fixes: 27e177190891 ("iio:adc:at91_adc8xx: introduce new atmel adc driver") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-2-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 279430c1d88c..ac9ef89fba17 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -77,7 +77,7 @@ struct at91_adc_reg_layout { #define AT91_SAMA5D2_MR_ANACH BIT(23) /* Tracking Time */ #define AT91_SAMA5D2_MR_TRACKTIM(v) ((v) << 24) -#define AT91_SAMA5D2_MR_TRACKTIM_MAX 0xff +#define AT91_SAMA5D2_MR_TRACKTIM_MAX 0xf /* Transfer Time */ #define AT91_SAMA5D2_MR_TRANSFER(v) ((v) << 28) #define AT91_SAMA5D2_MR_TRANSFER_MAX 0x3 From d84ace944a3b24529798dbae1340dea098473155 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:38 +0300 Subject: [PATCH 013/142] iio: adc: at91-sama5d2_adc: check return status for pressure and touch Check return status of at91_adc_read_position() and at91_adc_read_pressure() in at91_adc_read_info_raw(). Fixes: 6794e23fa3fe ("iio: adc: at91-sama5d2_adc: add support for oversampling resolution") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-3-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index ac9ef89fba17..08d1f806c839 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1544,8 +1544,10 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, *val = tmp_val; mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); + if (ret > 0) + ret = at91_adc_adjust_val_osr(st, val); - return at91_adc_adjust_val_osr(st, val); + return ret; } if (chan->type == IIO_PRESSURE) { ret = iio_device_claim_direct_mode(indio_dev); @@ -1558,8 +1560,10 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, *val = tmp_val; mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); + if (ret > 0) + ret = at91_adc_adjust_val_osr(st, val); - return at91_adc_adjust_val_osr(st, val); + return ret; } /* in this case we have a voltage channel */ From 9780a23ed5a0a0a63683e078f576719a98d4fb70 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:39 +0300 Subject: [PATCH 014/142] iio: adc: at91-sama5d2_adc: lock around oversampling and sample freq .read_raw()/.write_raw() could be called asynchronously from user space or other in kernel drivers. Without locking on st->lock these could be called asynchronously while there is a conversion in progress. Read will be harmless but changing registers while conversion is in progress may lead to inconsistent results. Thus, to avoid this lock st->lock. Fixes: 27e177190891 ("iio:adc:at91_adc8xx: introduce new atmel adc driver") Fixes: 6794e23fa3fe ("iio: adc: at91-sama5d2_adc: add support for oversampling resolution") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-4-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 08d1f806c839..3734ddc82952 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1542,10 +1542,10 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, ret = at91_adc_read_position(st, chan->channel, &tmp_val); *val = tmp_val; - mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); if (ret > 0) ret = at91_adc_adjust_val_osr(st, val); + mutex_unlock(&st->lock); + iio_device_release_direct_mode(indio_dev); return ret; } @@ -1558,10 +1558,10 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, ret = at91_adc_read_pressure(st, chan->channel, &tmp_val); *val = tmp_val; - mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); if (ret > 0) ret = at91_adc_adjust_val_osr(st, val); + mutex_unlock(&st->lock); + iio_device_release_direct_mode(indio_dev); return ret; } @@ -1650,16 +1650,20 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, /* if no change, optimize out */ if (val == st->oversampling_ratio) return 0; + mutex_lock(&st->lock); st->oversampling_ratio = val; /* update ratio */ at91_adc_config_emr(st); + mutex_unlock(&st->lock); return 0; case IIO_CHAN_INFO_SAMP_FREQ: if (val < st->soc_info.min_sample_rate || val > st->soc_info.max_sample_rate) return -EINVAL; + mutex_lock(&st->lock); at91_adc_setup_samp_freq(indio_dev, val); + mutex_unlock(&st->lock); return 0; default: return -EINVAL; From 808175e21d9b7f866eda742e8970f27b78afe5db Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:40 +0300 Subject: [PATCH 015/142] iio: adc: at91-sama5d2_adc: disable/prepare buffer on suspend/resume In case triggered buffers are enabled while system is suspended they will not work anymore after resume. For this call at91_adc_buffer_postdisable() on suspend and at91_adc_buffer_prepare() on resume. On tests it has been seen that at91_adc_buffer_postdisable() call is not necessary but it has been kept because it also does the book keeping for DMA. On resume path there is no need to call at91_adc_configure_touch() as it is embedded in at91_adc_buffer_prepare(). Fixes: 073c662017f2f ("iio: adc: at91-sama5d2_adc: add support for DMA") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-5-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 3734ddc82952..e2c82c5a2fac 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -2116,6 +2116,9 @@ static int at91_adc_suspend(struct device *dev) struct iio_dev *indio_dev = dev_get_drvdata(dev); struct at91_adc_state *st = iio_priv(indio_dev); + if (iio_buffer_enabled(indio_dev)) + at91_adc_buffer_postdisable(indio_dev); + /* * Do a sofware reset of the ADC before we go to suspend. * this will ensure that all pins are free from being muxed by the ADC @@ -2159,14 +2162,11 @@ static int at91_adc_resume(struct device *dev) if (!iio_buffer_enabled(indio_dev)) return 0; - /* check if we are enabling triggered buffer or the touchscreen */ - if (at91_adc_current_chan_is_touch(indio_dev)) - return at91_adc_configure_touch(st, true); - else - return at91_adc_configure_trigger(st->trig, true); + ret = at91_adc_buffer_prepare(indio_dev); + if (ret) + goto vref_disable_resume; - /* not needed but more explicit */ - return 0; + return at91_adc_configure_trigger(st->trig, true); vref_disable_resume: regulator_disable(st->vref); From cf15a2b518b3e6991ef1c2f87e9a7f7e4afa7b77 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:41 +0300 Subject: [PATCH 016/142] iio: adc: at91-sama5d2_adc: exit from write_raw() when buffers are enabled When buffers are enabled conversion may start asynchronously thus allowing changes on actual hardware could lead to bad behavior. Thus do not allow changing oversampling ratio and sample frequency when if iio_device_claim_direct_mode() returns with error. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-6-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index e2c82c5a2fac..64943d8ea869 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1641,6 +1641,7 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, int val, int val2, long mask) { struct at91_adc_state *st = iio_priv(indio_dev); + int ret; switch (mask) { case IIO_CHAN_INFO_OVERSAMPLING_RATIO: @@ -1650,20 +1651,29 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, /* if no change, optimize out */ if (val == st->oversampling_ratio) return 0; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; mutex_lock(&st->lock); st->oversampling_ratio = val; /* update ratio */ at91_adc_config_emr(st); mutex_unlock(&st->lock); + iio_device_release_direct_mode(indio_dev); return 0; case IIO_CHAN_INFO_SAMP_FREQ: if (val < st->soc_info.min_sample_rate || val > st->soc_info.max_sample_rate) return -EINVAL; + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; mutex_lock(&st->lock); at91_adc_setup_samp_freq(indio_dev, val); mutex_unlock(&st->lock); + iio_device_release_direct_mode(indio_dev); return 0; default: return -EINVAL; From 287c271dee146b7ab38f29d055691b8bc3753f35 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:42 +0300 Subject: [PATCH 017/142] iio: adc: at91-sama5d2_adc: handle different EMR.OSR for different hw versions SAMA7G5 introduces 64 and 256 oversampling rates. Due to this EMR.OSR is 3 bits long. Change the code to reflect this. Commit prepares the code for the addition of 64 and 256 oversampling rates. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-7-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 31 +++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 64943d8ea869..0283c8cc3168 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -138,8 +138,7 @@ struct at91_adc_reg_layout { /* Extended Mode Register */ u16 EMR; /* Extended Mode Register - Oversampling rate */ -#define AT91_SAMA5D2_EMR_OSR(V) ((V) << 16) -#define AT91_SAMA5D2_EMR_OSR_MASK GENMASK(17, 16) +#define AT91_SAMA5D2_EMR_OSR(V, M) (((V) << 16) & (M)) #define AT91_SAMA5D2_EMR_OSR_1SAMPLES 0 #define AT91_SAMA5D2_EMR_OSR_4SAMPLES 1 #define AT91_SAMA5D2_EMR_OSR_16SAMPLES 2 @@ -403,6 +402,7 @@ static const struct at91_adc_reg_layout sama7g5_layout = { * @max_index: highest channel index (highest index may be higher * than the total channel number) * @hw_trig_cnt: number of possible hardware triggers + * @osr_mask: oversampling ratio bitmask on EMR register */ struct at91_adc_platform { const struct at91_adc_reg_layout *layout; @@ -414,6 +414,7 @@ struct at91_adc_platform { unsigned int max_channels; unsigned int max_index; unsigned int hw_trig_cnt; + unsigned int osr_mask; }; /** @@ -612,6 +613,7 @@ static const struct at91_adc_platform sama5d2_platform = { .max_index = AT91_SAMA5D2_MAX_CHAN_IDX, #define AT91_SAMA5D2_HW_TRIG_CNT 3 .hw_trig_cnt = AT91_SAMA5D2_HW_TRIG_CNT, + .osr_mask = GENMASK(17, 16), }; static const struct at91_adc_platform sama7g5_platform = { @@ -627,6 +629,7 @@ static const struct at91_adc_platform sama7g5_platform = { .max_index = AT91_SAMA7G5_MAX_CHAN_IDX, #define AT91_SAMA7G5_HW_TRIG_CNT 3 .hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT, + .osr_mask = GENMASK(18, 16), }; static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan) @@ -725,30 +728,32 @@ static void at91_adc_eoc_ena(struct at91_adc_state *st, unsigned int channel) at91_adc_writel(st, EOC_IER, BIT(channel)); } -static void at91_adc_config_emr(struct at91_adc_state *st) +static void at91_adc_config_emr(struct at91_adc_state *st, + u32 oversampling_ratio) { /* configure the extended mode register */ unsigned int emr = at91_adc_readl(st, EMR); + unsigned int osr_mask = st->soc_info.platform->osr_mask; /* select oversampling per single trigger event */ emr |= AT91_SAMA5D2_EMR_ASTE(1); /* delete leftover content if it's the case */ - emr &= ~AT91_SAMA5D2_EMR_OSR_MASK; + emr &= ~osr_mask; /* select oversampling ratio from configuration */ - switch (st->oversampling_ratio) { + switch (oversampling_ratio) { case AT91_OSR_1SAMPLES: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES) & - AT91_SAMA5D2_EMR_OSR_MASK; + emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES, + osr_mask); break; case AT91_OSR_4SAMPLES: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES) & - AT91_SAMA5D2_EMR_OSR_MASK; + emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES, + osr_mask); break; case AT91_OSR_16SAMPLES: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES) & - AT91_SAMA5D2_EMR_OSR_MASK; + emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES, + osr_mask); break; } @@ -1658,7 +1663,7 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, mutex_lock(&st->lock); st->oversampling_ratio = val; /* update ratio */ - at91_adc_config_emr(st); + at91_adc_config_emr(st, val); mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); return 0; @@ -1838,7 +1843,7 @@ static void at91_adc_hw_init(struct iio_dev *indio_dev) at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate); /* configure extended mode register */ - at91_adc_config_emr(st); + at91_adc_config_emr(st, st->oversampling_ratio); } static ssize_t at91_adc_get_fifo_state(struct device *dev, From 502966c3b0267aee88803eda639d95fb98db433b Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:43 +0300 Subject: [PATCH 018/142] iio: adc: at91-sama5d2_adc: move the check of oversampling in its function Oversampling values are checked anyway in at91_adc_emr_config(). Remove the checking of these from at91_adc_write_raw() and return -EINVAL instead in at91_adc_emr_config(). Suggested-by: Jonathan Cameron Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-8-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 0283c8cc3168..ace4cc431a95 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -728,8 +728,8 @@ static void at91_adc_eoc_ena(struct at91_adc_state *st, unsigned int channel) at91_adc_writel(st, EOC_IER, BIT(channel)); } -static void at91_adc_config_emr(struct at91_adc_state *st, - u32 oversampling_ratio) +static int at91_adc_config_emr(struct at91_adc_state *st, + u32 oversampling_ratio) { /* configure the extended mode register */ unsigned int emr = at91_adc_readl(st, EMR); @@ -755,9 +755,13 @@ static void at91_adc_config_emr(struct at91_adc_state *st, emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES, osr_mask); break; + default: + return -EINVAL; } at91_adc_writel(st, EMR, emr); + + return 0; } static int at91_adc_adjust_val_osr(struct at91_adc_state *st, int *val) @@ -1650,9 +1654,6 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_OVERSAMPLING_RATIO: - if ((val != AT91_OSR_1SAMPLES) && (val != AT91_OSR_4SAMPLES) && - (val != AT91_OSR_16SAMPLES)) - return -EINVAL; /* if no change, optimize out */ if (val == st->oversampling_ratio) return 0; @@ -1661,12 +1662,13 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, if (ret) return ret; mutex_lock(&st->lock); - st->oversampling_ratio = val; /* update ratio */ - at91_adc_config_emr(st, val); + ret = at91_adc_config_emr(st, val); + if (!ret) + st->oversampling_ratio = val; mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); - return 0; + return ret; case IIO_CHAN_INFO_SAMP_FREQ: if (val < st->soc_info.min_sample_rate || val > st->soc_info.max_sample_rate) From eea2655e10a05b0836c09a8ac7c27edc79d1d661 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:44 +0300 Subject: [PATCH 019/142] iio: adc: at91-sama5d2_adc: drop AT91_OSR_XSAMPLES defines Drop AT91_OSR_1SAMPLES, AT91_OSR_4SAMPLES, AT91_OSR_16SAMPLES defines and insted use their values inline. Suggested-by: Jonathan Cameron Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-9-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index ace4cc431a95..fe4bec03bea9 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -304,11 +304,6 @@ static const struct at91_adc_reg_layout sama7g5_layout = { #define AT91_HWFIFO_MAX_SIZE_STR "128" #define AT91_HWFIFO_MAX_SIZE 128 -/* Possible values for oversampling ratio */ -#define AT91_OSR_1SAMPLES 1 -#define AT91_OSR_4SAMPLES 4 -#define AT91_OSR_16SAMPLES 16 - #define AT91_SAMA5D2_CHAN_SINGLE(index, num, addr) \ { \ .type = IIO_VOLTAGE, \ @@ -743,15 +738,15 @@ static int at91_adc_config_emr(struct at91_adc_state *st, /* select oversampling ratio from configuration */ switch (oversampling_ratio) { - case AT91_OSR_1SAMPLES: + case 1: emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES, osr_mask); break; - case AT91_OSR_4SAMPLES: + case 4: emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES, osr_mask); break; - case AT91_OSR_16SAMPLES: + case 16: emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES, osr_mask); break; @@ -766,13 +761,13 @@ static int at91_adc_config_emr(struct at91_adc_state *st, static int at91_adc_adjust_val_osr(struct at91_adc_state *st, int *val) { - if (st->oversampling_ratio == AT91_OSR_1SAMPLES) { + if (st->oversampling_ratio == 1) { /* * in this case we only have 12 bits of real data, but channel * is registered as 14 bits, so shift left two bits */ *val <<= 2; - } else if (st->oversampling_ratio == AT91_OSR_4SAMPLES) { + } else if (st->oversampling_ratio == 4) { /* * in this case we have 13 bits of real data, but channel * is registered as 14 bits, so left shift one bit @@ -1875,9 +1870,9 @@ static IIO_CONST_ATTR(hwfifo_watermark_min, "2"); static IIO_CONST_ATTR(hwfifo_watermark_max, AT91_HWFIFO_MAX_SIZE_STR); static IIO_CONST_ATTR(oversampling_ratio_available, - __stringify(AT91_OSR_1SAMPLES) " " - __stringify(AT91_OSR_4SAMPLES) " " - __stringify(AT91_OSR_16SAMPLES)); + __stringify(1) " " + __stringify(4) " " + __stringify(16)); static struct attribute *at91_adc_attributes[] = { &iio_const_attr_oversampling_ratio_available.dev_attr.attr, @@ -1973,7 +1968,7 @@ static int at91_adc_probe(struct platform_device *pdev) bitmap_set(&st->touch_st.channels_bitmask, st->soc_info.platform->touch_chan_p, 1); - st->oversampling_ratio = AT91_OSR_1SAMPLES; + st->oversampling_ratio = 1; ret = of_property_read_u32(pdev->dev.of_node, "atmel,min-sample-rate-hz", From 3c5d62a1e407eb2c941d094bfc0aa9ee85998f88 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:45 +0300 Subject: [PATCH 020/142] iio: adc: at91-sama5d2_adc: add .read_avail() chan_info ops Add .read_avail() to chan_info ops which will retrieve the available oversampling ratio. Suggested-by: Jonathan Cameron Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-10-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 50 +++++++++++++++++++++--------- 1 file changed, 35 insertions(+), 15 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index fe4bec03bea9..47caaf271fae 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -319,6 +319,8 @@ static const struct at91_adc_reg_layout sama7g5_layout = { .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + .info_mask_shared_by_all_available = \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ .datasheet_name = "CH"#num, \ .indexed = 1, \ } @@ -340,6 +342,8 @@ static const struct at91_adc_reg_layout sama7g5_layout = { .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + .info_mask_shared_by_all_available = \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ .datasheet_name = "CH"#num"-CH"#num2, \ .indexed = 1, \ } @@ -359,6 +363,8 @@ static const struct at91_adc_reg_layout sama7g5_layout = { .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + .info_mask_shared_by_all_available = \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ .datasheet_name = name, \ } #define AT91_SAMA5D2_CHAN_PRESSURE(num, name) \ @@ -374,6 +380,8 @@ static const struct at91_adc_reg_layout sama7g5_layout = { .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + .info_mask_shared_by_all_available = \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ .datasheet_name = name, \ } @@ -398,6 +406,8 @@ static const struct at91_adc_reg_layout sama7g5_layout = { * than the total channel number) * @hw_trig_cnt: number of possible hardware triggers * @osr_mask: oversampling ratio bitmask on EMR register + * @oversampling_avail: available oversampling values + * @oversampling_avail_no: number of available oversampling values */ struct at91_adc_platform { const struct at91_adc_reg_layout *layout; @@ -410,6 +420,8 @@ struct at91_adc_platform { unsigned int max_index; unsigned int hw_trig_cnt; unsigned int osr_mask; + unsigned int oversampling_avail[3]; + unsigned int oversampling_avail_no; }; /** @@ -609,6 +621,8 @@ static const struct at91_adc_platform sama5d2_platform = { #define AT91_SAMA5D2_HW_TRIG_CNT 3 .hw_trig_cnt = AT91_SAMA5D2_HW_TRIG_CNT, .osr_mask = GENMASK(17, 16), + .oversampling_avail = { 1, 4, 16, }, + .oversampling_avail_no = 3, }; static const struct at91_adc_platform sama7g5_platform = { @@ -625,6 +639,8 @@ static const struct at91_adc_platform sama7g5_platform = { #define AT91_SAMA7G5_HW_TRIG_CNT 3 .hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT, .osr_mask = GENMASK(18, 16), + .oversampling_avail = { 1, 4, 16, }, + .oversampling_avail_no = 3, }; static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan) @@ -1682,6 +1698,24 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, } } +static int at91_adc_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + struct at91_adc_state *st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + *vals = (int *)st->soc_info.platform->oversampling_avail; + *type = IIO_VAL_INT; + *length = st->soc_info.platform->oversampling_avail_no; + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } +} + static void at91_adc_dma_init(struct at91_adc_state *st) { struct device *dev = &st->indio_dev->dev; @@ -1869,20 +1903,6 @@ static IIO_DEVICE_ATTR(hwfifo_watermark, 0444, static IIO_CONST_ATTR(hwfifo_watermark_min, "2"); static IIO_CONST_ATTR(hwfifo_watermark_max, AT91_HWFIFO_MAX_SIZE_STR); -static IIO_CONST_ATTR(oversampling_ratio_available, - __stringify(1) " " - __stringify(4) " " - __stringify(16)); - -static struct attribute *at91_adc_attributes[] = { - &iio_const_attr_oversampling_ratio_available.dev_attr.attr, - NULL, -}; - -static const struct attribute_group at91_adc_attribute_group = { - .attrs = at91_adc_attributes, -}; - static const struct attribute *at91_adc_fifo_attributes[] = { &iio_const_attr_hwfifo_watermark_min.dev_attr.attr, &iio_const_attr_hwfifo_watermark_max.dev_attr.attr, @@ -1892,7 +1912,7 @@ static const struct attribute *at91_adc_fifo_attributes[] = { }; static const struct iio_info at91_adc_info = { - .attrs = &at91_adc_attribute_group, + .read_avail = &at91_adc_read_avail, .read_raw = &at91_adc_read_raw, .write_raw = &at91_adc_write_raw, .update_scan_mode = &at91_adc_update_scan_mode, From 00ee4add809fa6d2a4508004e3933404de288194 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:46 +0300 Subject: [PATCH 021/142] iio: adc: at91-sama5d2_adc: adjust osr based on specific platform data ADC captures data on 12 bits (if oversampling is not enabled). When using oversampling captured data could go up to 14 bits for SAMA5D2 or up to 16 bits for SAMA7G5 (depending on oversampling settings). All the channels that are subject of oversampling are registered as 14 or 16 real bits. Depending on the oversampling settings the ADC converted value need to be shifted up to 14 or 16 to cope with realbits value registered to IIO subsystem. Commit adds platform specific information to know if we run on a system with up to 14 or 16 bits ADC converted data. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-11-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 35 +++++++++++++++++++----------- 1 file changed, 22 insertions(+), 13 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 47caaf271fae..db9d77385149 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -408,6 +408,7 @@ static const struct at91_adc_reg_layout sama7g5_layout = { * @osr_mask: oversampling ratio bitmask on EMR register * @oversampling_avail: available oversampling values * @oversampling_avail_no: number of available oversampling values + * @chan_realbits: realbits for registered channels */ struct at91_adc_platform { const struct at91_adc_reg_layout *layout; @@ -422,6 +423,7 @@ struct at91_adc_platform { unsigned int osr_mask; unsigned int oversampling_avail[3]; unsigned int oversampling_avail_no; + unsigned int chan_realbits; }; /** @@ -623,6 +625,7 @@ static const struct at91_adc_platform sama5d2_platform = { .osr_mask = GENMASK(17, 16), .oversampling_avail = { 1, 4, 16, }, .oversampling_avail_no = 3, + .chan_realbits = 14, }; static const struct at91_adc_platform sama7g5_platform = { @@ -641,6 +644,7 @@ static const struct at91_adc_platform sama7g5_platform = { .osr_mask = GENMASK(18, 16), .oversampling_avail = { 1, 4, 16, }, .oversampling_avail_no = 3, + .chan_realbits = 16, }; static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan) @@ -777,19 +781,24 @@ static int at91_adc_config_emr(struct at91_adc_state *st, static int at91_adc_adjust_val_osr(struct at91_adc_state *st, int *val) { - if (st->oversampling_ratio == 1) { - /* - * in this case we only have 12 bits of real data, but channel - * is registered as 14 bits, so shift left two bits - */ - *val <<= 2; - } else if (st->oversampling_ratio == 4) { - /* - * in this case we have 13 bits of real data, but channel - * is registered as 14 bits, so left shift one bit - */ - *val <<= 1; - } + int nbits, diff; + + if (st->oversampling_ratio == 1) + nbits = 12; + else if (st->oversampling_ratio == 4) + nbits = 13; + else if (st->oversampling_ratio == 16) + nbits = 14; + else + /* Should not happen. */ + return -EINVAL; + + /* + * We have nbits of real data and channel is registered as + * st->soc_info.platform->chan_realbits, so shift left diff bits. + */ + diff = st->soc_info.platform->chan_realbits - nbits; + *val <<= diff; return IIO_VAL_INT; } From 5fc30713acf731f562dfdbe0795dadb71abd9183 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:47 +0300 Subject: [PATCH 022/142] iio: adc: at91-sama5d2_adc: add 64 and 256 oversampling ratio Add 64 and 256 oversampling ratio support. It is necessary for temperature sensor. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-12-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 31 +++++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index db9d77385149..d6a93aa7fbaf 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -142,6 +142,8 @@ struct at91_adc_reg_layout { #define AT91_SAMA5D2_EMR_OSR_1SAMPLES 0 #define AT91_SAMA5D2_EMR_OSR_4SAMPLES 1 #define AT91_SAMA5D2_EMR_OSR_16SAMPLES 2 +#define AT91_SAMA5D2_EMR_OSR_64SAMPLES 3 +#define AT91_SAMA5D2_EMR_OSR_256SAMPLES 4 /* Extended Mode Register - Averaging on single trigger event */ #define AT91_SAMA5D2_EMR_ASTE(V) ((V) << 20) @@ -421,7 +423,7 @@ struct at91_adc_platform { unsigned int max_index; unsigned int hw_trig_cnt; unsigned int osr_mask; - unsigned int oversampling_avail[3]; + unsigned int oversampling_avail[5]; unsigned int oversampling_avail_no; unsigned int chan_realbits; }; @@ -642,8 +644,8 @@ static const struct at91_adc_platform sama7g5_platform = { #define AT91_SAMA7G5_HW_TRIG_CNT 3 .hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT, .osr_mask = GENMASK(18, 16), - .oversampling_avail = { 1, 4, 16, }, - .oversampling_avail_no = 3, + .oversampling_avail = { 1, 4, 16, 64, 256, }, + .oversampling_avail_no = 5, .chan_realbits = 16, }; @@ -749,6 +751,15 @@ static int at91_adc_config_emr(struct at91_adc_state *st, /* configure the extended mode register */ unsigned int emr = at91_adc_readl(st, EMR); unsigned int osr_mask = st->soc_info.platform->osr_mask; + int i; + + /* Check against supported oversampling values. */ + for (i = 0; i < st->soc_info.platform->oversampling_avail_no; i++) { + if (oversampling_ratio == st->soc_info.platform->oversampling_avail[i]) + break; + } + if (i == st->soc_info.platform->oversampling_avail_no) + return -EINVAL; /* select oversampling per single trigger event */ emr |= AT91_SAMA5D2_EMR_ASTE(1); @@ -770,8 +781,14 @@ static int at91_adc_config_emr(struct at91_adc_state *st, emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES, osr_mask); break; - default: - return -EINVAL; + case 64: + emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_64SAMPLES, + osr_mask); + break; + case 256: + emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_256SAMPLES, + osr_mask); + break; } at91_adc_writel(st, EMR, emr); @@ -789,6 +806,10 @@ static int at91_adc_adjust_val_osr(struct at91_adc_state *st, int *val) nbits = 13; else if (st->oversampling_ratio == 16) nbits = 14; + else if (st->oversampling_ratio == 64) + nbits = 15; + else if (st->oversampling_ratio == 256) + nbits = 16; else /* Should not happen. */ return -EINVAL; From 426b64752c4cc2059d5219d81071bf57608f346f Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:48 +0300 Subject: [PATCH 023/142] iio: adc: at91-sama5d2_adc: move oversampling storage in its function Move the storage of oversampling_ratio in at91_adc_config_emr(). This prepares for the next commits. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-13-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index d6a93aa7fbaf..a1df475a6f29 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -793,6 +793,8 @@ static int at91_adc_config_emr(struct at91_adc_state *st, at91_adc_writel(st, EMR, emr); + st->oversampling_ratio = oversampling_ratio; + return 0; } @@ -1705,8 +1707,6 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, mutex_lock(&st->lock); /* update ratio */ ret = at91_adc_config_emr(st, val); - if (!ret) - st->oversampling_ratio = val; mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); return ret; From 04227f9510799b8f15fc9dcc30e12ed503bb3183 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:49 +0300 Subject: [PATCH 024/142] iio: adc: at91-sama5d2_adc: update trackx on emr Add support for updating trackx bits of EMR register. Having different values of EMR.TRACKX when measuring temperature give a better accuracy. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-14-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index a1df475a6f29..0209353cbfd7 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -145,6 +145,10 @@ struct at91_adc_reg_layout { #define AT91_SAMA5D2_EMR_OSR_64SAMPLES 3 #define AT91_SAMA5D2_EMR_OSR_256SAMPLES 4 +/* Extended Mode Register - TRACKX */ +#define AT91_SAMA5D2_TRACKX_MASK GENMASK(23, 22) +#define AT91_SAMA5D2_TRACKX(x) (((x) << 22) & \ + AT91_SAMA5D2_TRACKX_MASK) /* Extended Mode Register - Averaging on single trigger event */ #define AT91_SAMA5D2_EMR_ASTE(V) ((V) << 20) @@ -746,7 +750,7 @@ static void at91_adc_eoc_ena(struct at91_adc_state *st, unsigned int channel) } static int at91_adc_config_emr(struct at91_adc_state *st, - u32 oversampling_ratio) + u32 oversampling_ratio, u32 trackx) { /* configure the extended mode register */ unsigned int emr = at91_adc_readl(st, EMR); @@ -765,7 +769,7 @@ static int at91_adc_config_emr(struct at91_adc_state *st, emr |= AT91_SAMA5D2_EMR_ASTE(1); /* delete leftover content if it's the case */ - emr &= ~osr_mask; + emr &= ~(osr_mask | AT91_SAMA5D2_TRACKX_MASK); /* select oversampling ratio from configuration */ switch (oversampling_ratio) { @@ -791,6 +795,8 @@ static int at91_adc_config_emr(struct at91_adc_state *st, break; } + /* Update trackx. */ + emr |= AT91_SAMA5D2_TRACKX(trackx); at91_adc_writel(st, EMR, emr); st->oversampling_ratio = oversampling_ratio; @@ -1706,7 +1712,7 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, return ret; mutex_lock(&st->lock); /* update ratio */ - ret = at91_adc_config_emr(st, val); + ret = at91_adc_config_emr(st, val, 0); mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); return ret; @@ -1904,7 +1910,7 @@ static void at91_adc_hw_init(struct iio_dev *indio_dev) at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate); /* configure extended mode register */ - at91_adc_config_emr(st, st->oversampling_ratio); + at91_adc_config_emr(st, st->oversampling_ratio, 0); } static ssize_t at91_adc_get_fifo_state(struct device *dev, From 5f72666f4b1ac269fe5b3b3f0cfaa6ada6add57c Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:50 +0300 Subject: [PATCH 025/142] iio: adc: at91-sama5d2_adc: add startup and tracktim as parameter for at91_adc_setup_samp_freq() Add startup and tracktim as parameter for at91_adc_setup_samp_freq() function. In case of temperature sensor being enabled these parameters will be configured on temperature read request to improve the accuracy of the read temperature. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-15-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 0209353cbfd7..fd02da9b26b2 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1435,7 +1435,9 @@ static unsigned at91_adc_startup_time(unsigned startup_time_min, return i; } -static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq) +static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq, + unsigned int startup_time, + unsigned int tracktim) { struct at91_adc_state *st = iio_priv(indio_dev); unsigned f_per, prescal, startup, mr; @@ -1443,17 +1445,17 @@ static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq) f_per = clk_get_rate(st->per_clk); prescal = (f_per / (2 * freq)) - 1; - startup = at91_adc_startup_time(st->soc_info.startup_time, - freq / 1000); + startup = at91_adc_startup_time(startup_time, freq / 1000); mr = at91_adc_readl(st, MR); mr &= ~(AT91_SAMA5D2_MR_STARTUP_MASK | AT91_SAMA5D2_MR_PRESCAL_MASK); mr |= AT91_SAMA5D2_MR_STARTUP(startup); mr |= AT91_SAMA5D2_MR_PRESCAL(prescal); + mr |= AT91_SAMA5D2_MR_TRACKTIM(tracktim); at91_adc_writel(st, MR, mr); - dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u\n", - freq, startup, prescal); + dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u, tracktim=%u\n", + freq, startup, prescal, tracktim); st->current_sample_rate = freq; } @@ -1725,7 +1727,8 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, if (ret) return ret; mutex_lock(&st->lock); - at91_adc_setup_samp_freq(indio_dev, val); + at91_adc_setup_samp_freq(indio_dev, val, + st->soc_info.startup_time, 0); mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); return 0; @@ -1907,7 +1910,8 @@ static void at91_adc_hw_init(struct iio_dev *indio_dev) at91_adc_writel(st, MR, AT91_SAMA5D2_MR_TRANSFER(2) | AT91_SAMA5D2_MR_ANACH); - at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate); + at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate, + st->soc_info.startup_time, 0); /* configure extended mode register */ at91_adc_config_emr(st, st->oversampling_ratio, 0); From a0f96db4ca1279d2c5150ed306e32a589f66070b Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:51 +0300 Subject: [PATCH 026/142] iio: adc: at91-sama5d2_adc: lock around at91_adc_read_info_raw() Remove iio_device_{claim, release}_direct_mode() and lock/unlock to &st->lock from at91_adc_read_info_raw(). Instead add a wrapper around at91_adc_read_info_raw() and do there the lock/unlock. This will allow using the at91_adc_read_info_raw() in patch that add support for temperature sensor. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-16-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 39 +++++++++++++++--------------- 1 file changed, 19 insertions(+), 20 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index fd02da9b26b2..1a72e304fc3a 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1582,6 +1582,7 @@ static irqreturn_t at91_adc_interrupt(int irq, void *private) return IRQ_HANDLED; } +/* This needs to be called with direct mode claimed and st->lock locked. */ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val) { @@ -1594,45 +1595,26 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, * if external trigger is enabled */ if (chan->type == IIO_POSITIONRELATIVE) { - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; - mutex_lock(&st->lock); - ret = at91_adc_read_position(st, chan->channel, &tmp_val); *val = tmp_val; if (ret > 0) ret = at91_adc_adjust_val_osr(st, val); - mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); return ret; } if (chan->type == IIO_PRESSURE) { - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; - mutex_lock(&st->lock); - ret = at91_adc_read_pressure(st, chan->channel, &tmp_val); *val = tmp_val; if (ret > 0) ret = at91_adc_adjust_val_osr(st, val); - mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); return ret; } /* in this case we have a voltage channel */ - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; - mutex_lock(&st->lock); - st->chan = chan; at91_adc_cor(st, chan); @@ -1661,9 +1643,25 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, /* Needed to ACK the DRDY interruption */ at91_adc_readl(st, LCDR); + return ret; +} + +static int at91_adc_read_info_locked(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val) +{ + struct at91_adc_state *st = iio_priv(indio_dev); + int ret; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + + mutex_lock(&st->lock); + ret = at91_adc_read_info_raw(indio_dev, chan, val); mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); + return ret; } @@ -1675,7 +1673,8 @@ static int at91_adc_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - return at91_adc_read_info_raw(indio_dev, chan, val); + return at91_adc_read_info_locked(indio_dev, chan, val); + case IIO_CHAN_INFO_SCALE: *val = st->vref_uv / 1000; if (chan->differential) From cb6e097d9340e037ced6c580019e823b702c6bb9 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:52 +0300 Subject: [PATCH 027/142] dt-bindings: iio: adc: at91-sama5d2_adc: add id for temperature channel Add ID for temperature channel of AT91 SAMA5D2 ADC. Signed-off-by: Claudiu Beznea Acked-by: Rob Herring Link: https://lore.kernel.org/r/20220803102855.2191070-17-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- include/dt-bindings/iio/adc/at91-sama5d2_adc.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/dt-bindings/iio/adc/at91-sama5d2_adc.h b/include/dt-bindings/iio/adc/at91-sama5d2_adc.h index 70f99dbdbb42..866d36530583 100644 --- a/include/dt-bindings/iio/adc/at91-sama5d2_adc.h +++ b/include/dt-bindings/iio/adc/at91-sama5d2_adc.h @@ -13,4 +13,7 @@ /* pressure channel index */ #define AT91_SAMA5D2_ADC_P_CHANNEL 26 +/* SAMA7G5 Temperature sensor channel index. */ +#define AT91_SAMA7G5_ADC_TEMP_CHANNEL 31 + #endif From 5ab38b81895c869fb72eab5b528d5ef13a741c66 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:53 +0300 Subject: [PATCH 028/142] iio: adc: at91-sama5d2_adc: add support for temperature sensor The ADC on SAMA7G5 has a dedicated channel (channel 31) for measuring in-SoC temperature. 2 inputs are multiplexed on channel 31, VTEMP and VBG as follows: ` | \ +-----+ VBG --->| | ch31 | | Vtemp --->| |----->| ADC | | / | | | / +-----+ . where: - VTEMP is proportional to the absolute temperature voltage - VBG is a quasi-temperature independent voltage Both VBG and VTEMP are needed to determine the correct in-SoC temperature. At a moment of time only one of these could be measured, the selection being done with bit SRCLCH bit of ACR register. The formula to calculate the temperature is as follows: P1 + (Vref * (VTEMP - P6 - P4 * VBG)) / (VBG * VTEMP_DT) where: - P1, P4, P6 are calibration data retrieved from OTP memory - Vref is the reference voltage for ADC - VTEMP_DT is the voltage sensitivity to temperature and is constant - VTEMP, VBG are the measured values from channel 31 For better resolution before reading the temperature certain settings for oversampling ratio, sample frequency, EMR.TRACKX, MR.TRACKTIM are applied. The initial settings are reapplied at the end of temperature reading. Current support is not integrated with trigger buffers channel 31 not being enabled/disabled in functions at91_adc_buffer_prepare(), at91_adc_buffer_postdisable() thus the conversion for channel 31 is not done in case trigger buffers are enabled. In case of trigger buffers are enabled and temperature requests are received in the driver though at91_adc_read_temp() the at91_adc_read_temp() will return with an error code. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-18-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 256 ++++++++++++++++++++++++++++- 1 file changed, 249 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 1a72e304fc3a..0a7b1680f158 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -26,9 +27,12 @@ #include #include #include +#include #include #include +#include + struct at91_adc_reg_layout { /* Control Register */ u16 CR; @@ -73,10 +77,13 @@ struct at91_adc_reg_layout { /* Startup Time */ #define AT91_SAMA5D2_MR_STARTUP(v) ((v) << 16) #define AT91_SAMA5D2_MR_STARTUP_MASK GENMASK(19, 16) +/* Minimum startup time for temperature sensor */ +#define AT91_SAMA5D2_MR_STARTUP_TS_MIN (50) /* Analog Change */ #define AT91_SAMA5D2_MR_ANACH BIT(23) /* Tracking Time */ #define AT91_SAMA5D2_MR_TRACKTIM(v) ((v) << 24) +#define AT91_SAMA5D2_MR_TRACKTIM_TS 6 #define AT91_SAMA5D2_MR_TRACKTIM_MAX 0xf /* Transfer Time */ #define AT91_SAMA5D2_MR_TRANSFER(v) ((v) << 28) @@ -149,6 +156,9 @@ struct at91_adc_reg_layout { #define AT91_SAMA5D2_TRACKX_MASK GENMASK(23, 22) #define AT91_SAMA5D2_TRACKX(x) (((x) << 22) & \ AT91_SAMA5D2_TRACKX_MASK) +/* TRACKX for temperature sensor. */ +#define AT91_SAMA5D2_TRACKX_TS (1) + /* Extended Mode Register - Averaging on single trigger event */ #define AT91_SAMA5D2_EMR_ASTE(V) ((V) << 20) @@ -164,6 +174,8 @@ struct at91_adc_reg_layout { u16 ACR; /* Analog Control Register - Pen detect sensitivity mask */ #define AT91_SAMA5D2_ACR_PENDETSENS_MASK GENMASK(1, 0) +/* Analog Control Register - Source last channel */ +#define AT91_SAMA5D2_ACR_SRCLCH BIT(16) /* Touchscreen Mode Register */ u16 TSMR; @@ -231,6 +243,10 @@ struct at91_adc_reg_layout { u16 WPSR; /* Version Register */ u16 VERSION; +/* Temperature Sensor Mode Register */ + u16 TEMPMR; +/* Temperature Sensor Mode - Temperature sensor on */ +#define AT91_SAMA5D2_TEMPMR_TEMPON BIT(0) }; static const struct at91_adc_reg_layout sama5d2_layout = { @@ -285,6 +301,7 @@ static const struct at91_adc_reg_layout sama7g5_layout = { .EOC_IDR = 0x38, .EOC_IMR = 0x3c, .EOC_ISR = 0x40, + .TEMPMR = 0x44, .OVER = 0x4c, .EMR = 0x50, .CWR = 0x54, @@ -391,6 +408,21 @@ static const struct at91_adc_reg_layout sama7g5_layout = { .datasheet_name = name, \ } +#define AT91_SAMA5D2_CHAN_TEMP(num, name, addr) \ + { \ + .type = IIO_TEMP, \ + .channel = num, \ + .address = addr, \ + .scan_index = num, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \ + .info_mask_shared_by_all = \ + BIT(IIO_CHAN_INFO_PROCESSED) | \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + .info_mask_shared_by_all_available = \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + .datasheet_name = name, \ + } + #define at91_adc_readl(st, reg) \ readl_relaxed((st)->base + (st)->soc_info.platform->layout->reg) #define at91_adc_read_chan(st, reg) \ @@ -415,6 +447,8 @@ static const struct at91_adc_reg_layout sama7g5_layout = { * @oversampling_avail: available oversampling values * @oversampling_avail_no: number of available oversampling values * @chan_realbits: realbits for registered channels + * @temp_chan: temperature channel index + * @temp_sensor: temperature sensor supported */ struct at91_adc_platform { const struct at91_adc_reg_layout *layout; @@ -430,20 +464,54 @@ struct at91_adc_platform { unsigned int oversampling_avail[5]; unsigned int oversampling_avail_no; unsigned int chan_realbits; + unsigned int temp_chan; + bool temp_sensor; }; +/** + * struct at91_adc_temp_sensor_clb - at91-sama5d2 temperature sensor + * calibration data structure + * @p1: P1 calibration temperature + * @p4: P4 calibration voltage + * @p6: P6 calibration voltage + */ +struct at91_adc_temp_sensor_clb { + u32 p1; + u32 p4; + u32 p6; +}; + +/** + * enum at91_adc_ts_clb_idx - calibration indexes in NVMEM buffer + * @AT91_ADC_TS_CLB_IDX_P1: index for P1 + * @AT91_ADC_TS_CLB_IDX_P4: index for P4 + * @AT91_ADC_TS_CLB_IDX_P6: index for P6 + * @AT91_ADC_TS_CLB_IDX_MAX: max index for temperature calibration packet in OTP + */ +enum at91_adc_ts_clb_idx { + AT91_ADC_TS_CLB_IDX_P1 = 2, + AT91_ADC_TS_CLB_IDX_P4 = 5, + AT91_ADC_TS_CLB_IDX_P6 = 7, + AT91_ADC_TS_CLB_IDX_MAX = 19, +}; + +/* Temperature sensor calibration - Vtemp voltage sensitivity to temperature. */ +#define AT91_ADC_TS_VTEMP_DT (2080U) + /** * struct at91_adc_soc_info - at91-sama5d2 soc information struct * @startup_time: device startup time * @min_sample_rate: minimum sample rate in Hz * @max_sample_rate: maximum sample rate in Hz * @platform: pointer to the platform structure + * @temp_sensor_clb: temperature sensor calibration data structure */ struct at91_adc_soc_info { unsigned startup_time; unsigned min_sample_rate; unsigned max_sample_rate; const struct at91_adc_platform *platform; + struct at91_adc_temp_sensor_clb temp_sensor_clb; }; struct at91_adc_trigger { @@ -491,6 +559,18 @@ struct at91_adc_touch { struct work_struct workq; }; +/** + * struct at91_adc_temp - at91-sama5d2 temperature information structure + * @sample_period_val: sample period value + * @saved_sample_rate: saved sample rate + * @saved_oversampling: saved oversampling + */ +struct at91_adc_temp { + u16 sample_period_val; + u16 saved_sample_rate; + u16 saved_oversampling; +}; + /* * Buffer size requirements: * No channels * bytes_per_channel(2) + timestamp bytes (8) @@ -518,6 +598,7 @@ struct at91_adc_state { wait_queue_head_t wq_data_available; struct at91_adc_dma dma_st; struct at91_adc_touch touch_st; + struct at91_adc_temp temp_st; struct iio_dev *indio_dev; /* Ensure naturally aligned timestamp */ u16 buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8); @@ -607,6 +688,7 @@ static const struct iio_chan_spec at91_sama7g5_adc_channels[] = { AT91_SAMA5D2_CHAN_DIFF(22, 12, 13, 0x90), AT91_SAMA5D2_CHAN_DIFF(23, 14, 15, 0x98), IIO_CHAN_SOFT_TIMESTAMP(24), + AT91_SAMA5D2_CHAN_TEMP(AT91_SAMA7G5_ADC_TEMP_CHANNEL, "temp", 0xdc), }; static const struct at91_adc_platform sama5d2_platform = { @@ -639,10 +721,13 @@ static const struct at91_adc_platform sama7g5_platform = { .adc_channels = &at91_sama7g5_adc_channels, #define AT91_SAMA7G5_SINGLE_CHAN_CNT 16 #define AT91_SAMA7G5_DIFF_CHAN_CNT 8 +#define AT91_SAMA7G5_TEMP_CHAN_CNT 1 .nr_channels = AT91_SAMA7G5_SINGLE_CHAN_CNT + - AT91_SAMA7G5_DIFF_CHAN_CNT, + AT91_SAMA7G5_DIFF_CHAN_CNT + + AT91_SAMA7G5_TEMP_CHAN_CNT, #define AT91_SAMA7G5_MAX_CHAN_IDX (AT91_SAMA7G5_SINGLE_CHAN_CNT + \ - AT91_SAMA7G5_DIFF_CHAN_CNT) + AT91_SAMA7G5_DIFF_CHAN_CNT + \ + AT91_SAMA7G5_TEMP_CHAN_CNT) .max_channels = ARRAY_SIZE(at91_sama7g5_adc_channels), .max_index = AT91_SAMA7G5_MAX_CHAN_IDX, #define AT91_SAMA7G5_HW_TRIG_CNT 3 @@ -651,6 +736,8 @@ static const struct at91_adc_platform sama7g5_platform = { .oversampling_avail = { 1, 4, 16, 64, 256, }, .oversampling_avail_no = 5, .chan_realbits = 16, + .temp_sensor = true, + .temp_chan = AT91_SAMA7G5_ADC_TEMP_CHANNEL, }; static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan) @@ -1193,7 +1280,8 @@ static int at91_adc_buffer_prepare(struct iio_dev *indio_dev) continue; /* these channel types cannot be handled by this trigger */ if (chan->type == IIO_POSITIONRELATIVE || - chan->type == IIO_PRESSURE) + chan->type == IIO_PRESSURE || + chan->type == IIO_TEMP) continue; at91_adc_cor(st, chan); @@ -1235,7 +1323,8 @@ static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev) continue; /* these channel types are virtual, no need to do anything */ if (chan->type == IIO_POSITIONRELATIVE || - chan->type == IIO_PRESSURE) + chan->type == IIO_PRESSURE || + chan->type == IIO_TEMP) continue; at91_adc_writel(st, CHDR, BIT(chan->channel)); @@ -1613,12 +1702,19 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, return ret; } - /* in this case we have a voltage channel */ + /* in this case we have a voltage or temperature channel */ st->chan = chan; at91_adc_cor(st, chan); at91_adc_writel(st, CHER, BIT(chan->channel)); + /* + * TEMPMR.TEMPON needs to update after CHER otherwise if none + * of the channels are enabled and TEMPMR.TEMPON = 1 will + * trigger DRDY interruption while preparing for temperature read. + */ + if (chan->type == IIO_TEMP) + at91_adc_writel(st, TEMPMR, AT91_SAMA5D2_TEMPMR_TEMPON); at91_adc_eoc_ena(st, chan->channel); at91_adc_writel(st, CR, AT91_SAMA5D2_CR_START); @@ -1638,6 +1734,8 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, } at91_adc_eoc_dis(st, st->chan->channel); + if (chan->type == IIO_TEMP) + at91_adc_writel(st, TEMPMR, 0U); at91_adc_writel(st, CHDR, BIT(chan->channel)); /* Needed to ACK the DRDY interruption */ @@ -1665,6 +1763,89 @@ static int at91_adc_read_info_locked(struct iio_dev *indio_dev, return ret; } +static void at91_adc_temp_sensor_configure(struct at91_adc_state *st, + bool start) +{ + u32 sample_rate, oversampling_ratio; + u32 startup_time, tracktim, trackx; + + if (start) { + /* + * Configure the sensor for best accuracy: 10MHz frequency, + * oversampling rate of 256, tracktim=0xf and trackx=1. + */ + sample_rate = 10 * MEGA; + oversampling_ratio = 256; + startup_time = AT91_SAMA5D2_MR_STARTUP_TS_MIN; + tracktim = AT91_SAMA5D2_MR_TRACKTIM_TS; + trackx = AT91_SAMA5D2_TRACKX_TS; + + st->temp_st.saved_sample_rate = st->current_sample_rate; + st->temp_st.saved_oversampling = st->oversampling_ratio; + } else { + /* Go back to previous settings. */ + sample_rate = st->temp_st.saved_sample_rate; + oversampling_ratio = st->temp_st.saved_oversampling; + startup_time = st->soc_info.startup_time; + tracktim = 0; + trackx = 0; + } + + at91_adc_setup_samp_freq(st->indio_dev, sample_rate, startup_time, + tracktim); + at91_adc_config_emr(st, oversampling_ratio, trackx); +} + +static int at91_adc_read_temp(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val) +{ + struct at91_adc_state *st = iio_priv(indio_dev); + struct at91_adc_temp_sensor_clb *clb = &st->soc_info.temp_sensor_clb; + u64 div1, div2; + u32 tmp; + int ret, vbg, vtemp; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + mutex_lock(&st->lock); + + at91_adc_temp_sensor_configure(st, true); + + /* Read VBG. */ + tmp = at91_adc_readl(st, ACR); + tmp |= AT91_SAMA5D2_ACR_SRCLCH; + at91_adc_writel(st, ACR, tmp); + ret = at91_adc_read_info_raw(indio_dev, chan, &vbg); + if (ret < 0) + goto restore_config; + + /* Read VTEMP. */ + tmp &= ~AT91_SAMA5D2_ACR_SRCLCH; + at91_adc_writel(st, ACR, tmp); + ret = at91_adc_read_info_raw(indio_dev, chan, &vtemp); + +restore_config: + /* Revert previous settings. */ + at91_adc_temp_sensor_configure(st, false); + mutex_unlock(&st->lock); + iio_device_release_direct_mode(indio_dev); + if (ret < 0) + return ret; + + /* + * Temp[milli] = p1[milli] + (vtemp * clb->p6 - clb->p4 * vbg)/ + * (vbg * AT91_ADC_TS_VTEMP_DT) + */ + div1 = DIV_ROUND_CLOSEST_ULL(((u64)vtemp * clb->p6), vbg); + div1 = DIV_ROUND_CLOSEST_ULL((div1 * 1000), AT91_ADC_TS_VTEMP_DT); + div2 = DIV_ROUND_CLOSEST_ULL((u64)clb->p4, AT91_ADC_TS_VTEMP_DT); + div2 *= 1000; + *val = clb->p1 + (int)div1 - (int)div2; + + return ret; +} + static int at91_adc_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -1682,6 +1863,11 @@ static int at91_adc_read_raw(struct iio_dev *indio_dev, *val2 = chan->scan_type.realbits; return IIO_VAL_FRACTIONAL_LOG2; + case IIO_CHAN_INFO_PROCESSED: + if (chan->type != IIO_TEMP) + return -EINVAL; + return at91_adc_read_temp(indio_dev, chan, val); + case IIO_CHAN_INFO_SAMP_FREQ: *val = at91_adc_get_sample_freq(st); return IIO_VAL_INT; @@ -1997,12 +2183,61 @@ static int at91_adc_buffer_and_trigger_init(struct device *dev, return 0; } +static int at91_adc_temp_sensor_init(struct at91_adc_state *st, + struct device *dev) +{ + struct at91_adc_temp_sensor_clb *clb = &st->soc_info.temp_sensor_clb; + struct nvmem_cell *temp_calib; + u32 *buf; + size_t len; + int ret = 0; + + if (!st->soc_info.platform->temp_sensor) + return 0; + + /* Get the calibration data from NVMEM. */ + temp_calib = devm_nvmem_cell_get(dev, "temperature_calib"); + if (IS_ERR(temp_calib)) { + ret = PTR_ERR(temp_calib); + if (ret != -ENOENT) + dev_err(dev, "Failed to get temperature_calib cell!\n"); + return ret; + } + + buf = nvmem_cell_read(temp_calib, &len); + if (IS_ERR(buf)) { + dev_err(dev, "Failed to read calibration data!\n"); + return PTR_ERR(buf); + } + if (len < AT91_ADC_TS_CLB_IDX_MAX * 4) { + dev_err(dev, "Invalid calibration data!\n"); + ret = -EINVAL; + goto free_buf; + } + + /* Store calibration data for later use. */ + clb->p1 = buf[AT91_ADC_TS_CLB_IDX_P1]; + clb->p4 = buf[AT91_ADC_TS_CLB_IDX_P4]; + clb->p6 = buf[AT91_ADC_TS_CLB_IDX_P6]; + + /* + * We prepare here the conversion to milli and also add constant + * factor (5 degrees Celsius) to p1 here to avoid doing it on + * hotpath. + */ + clb->p1 = clb->p1 * 1000 + 5000; + +free_buf: + kfree(buf); + return ret; +} + static int at91_adc_probe(struct platform_device *pdev) { struct iio_dev *indio_dev; struct at91_adc_state *st; struct resource *res; - int ret, i; + int ret, i, num_channels; u32 edge_type = IRQ_TYPE_NONE; indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); @@ -2014,11 +2249,18 @@ static int at91_adc_probe(struct platform_device *pdev) st->soc_info.platform = of_device_get_match_data(&pdev->dev); + ret = at91_adc_temp_sensor_init(st, &pdev->dev); + /* Don't register temperature channel if initialization failed. */ + if (ret) + num_channels = st->soc_info.platform->max_channels - 1; + else + num_channels = st->soc_info.platform->max_channels; + indio_dev->name = dev_name(&pdev->dev); indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE; indio_dev->info = &at91_adc_info; indio_dev->channels = *st->soc_info.platform->adc_channels; - indio_dev->num_channels = st->soc_info.platform->max_channels; + indio_dev->num_channels = num_channels; bitmap_set(&st->touch_st.channels_bitmask, st->soc_info.platform->touch_chan_x, 1); From 0cf53f303a02f5c4560042e856035b995a457c1f Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:54 +0300 Subject: [PATCH 029/142] iio: adc: at91-sama5d2_adc: add empty line after functions Add empty line after function. Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-19-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 0a7b1680f158..94cb96ccd2ee 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1371,6 +1371,7 @@ static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *indio, return trig; } + static void at91_adc_trigger_handler_nodma(struct iio_dev *indio_dev, struct iio_poll_func *pf) { From 75d7556ac0e4bff830f7f90ceaa8d35f4b6c346a Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Wed, 3 Aug 2022 13:28:55 +0300 Subject: [PATCH 030/142] iio: adc: at91-sama5d2_adc: add runtime pm support Add runtime PM support by disabling/enabling ADC's peripheral clock. On simple conversion the ADC's clock is kept enabled just while the conversion is in progress. This includes also temperature conversion. For triggered buffers and touch conversions the ADC clock is kept enabled while the triggered buffers or touch are enabled. Along with it removed the __maybe_unused on suspend() and resume() ops as the dev_pm_ops object members are now filled with SYSTEM_SLEEP_PM_OPS(). Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220803102855.2191070-20-claudiu.beznea@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 208 +++++++++++++++++++++++------ 1 file changed, 166 insertions(+), 42 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 94cb96ccd2ee..8d8aa9691499 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include @@ -600,6 +601,7 @@ struct at91_adc_state { struct at91_adc_touch touch_st; struct at91_adc_temp temp_st; struct iio_dev *indio_dev; + struct device *dev; /* Ensure naturally aligned timestamp */ u16 buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8); /* @@ -840,9 +842,9 @@ static int at91_adc_config_emr(struct at91_adc_state *st, u32 oversampling_ratio, u32 trackx) { /* configure the extended mode register */ - unsigned int emr = at91_adc_readl(st, EMR); + unsigned int emr, osr; unsigned int osr_mask = st->soc_info.platform->osr_mask; - int i; + int i, ret; /* Check against supported oversampling values. */ for (i = 0; i < st->soc_info.platform->oversampling_avail_no; i++) { @@ -852,40 +854,46 @@ static int at91_adc_config_emr(struct at91_adc_state *st, if (i == st->soc_info.platform->oversampling_avail_no) return -EINVAL; - /* select oversampling per single trigger event */ - emr |= AT91_SAMA5D2_EMR_ASTE(1); - - /* delete leftover content if it's the case */ - emr &= ~(osr_mask | AT91_SAMA5D2_TRACKX_MASK); - /* select oversampling ratio from configuration */ switch (oversampling_ratio) { case 1: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES, - osr_mask); + osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES, + osr_mask); break; case 4: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES, - osr_mask); + osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES, + osr_mask); break; case 16: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES, - osr_mask); + osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES, + osr_mask); break; case 64: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_64SAMPLES, - osr_mask); + osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_64SAMPLES, + osr_mask); break; case 256: - emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_256SAMPLES, - osr_mask); + osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_256SAMPLES, + osr_mask); break; } - /* Update trackx. */ - emr |= AT91_SAMA5D2_TRACKX(trackx); + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; + + emr = at91_adc_readl(st, EMR); + /* select oversampling per single trigger event */ + emr |= AT91_SAMA5D2_EMR_ASTE(1); + /* delete leftover content if it's the case */ + emr &= ~(osr_mask | AT91_SAMA5D2_TRACKX_MASK); + /* Update osr and trackx. */ + emr |= osr | AT91_SAMA5D2_TRACKX(trackx); at91_adc_writel(st, EMR, emr); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + st->oversampling_ratio = oversampling_ratio; return 0; @@ -944,15 +952,22 @@ static void at91_adc_adjust_val_osr_array(struct at91_adc_state *st, void *buf, static int at91_adc_configure_touch(struct at91_adc_state *st, bool state) { u32 clk_khz = st->current_sample_rate / 1000; - int i = 0; + int i = 0, ret; u16 pendbc; u32 tsmr, acr; - if (!state) { + if (state) { + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; + } else { /* disabling touch IRQs and setting mode to no touch enabled */ at91_adc_writel(st, IDR, AT91_SAMA5D2_IER_PEN | AT91_SAMA5D2_IER_NOPEN); at91_adc_writel(st, TSMR, 0); + + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); return 0; } /* @@ -1093,10 +1108,9 @@ static int at91_adc_read_pressure(struct at91_adc_state *st, int chan, u16 *val) return IIO_VAL_INT; } -static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state) +static void at91_adc_configure_trigger_registers(struct at91_adc_state *st, + bool state) { - struct iio_dev *indio = iio_trigger_get_drvdata(trig); - struct at91_adc_state *st = iio_priv(indio); u32 status = at91_adc_readl(st, TRGR); /* clear TRGMOD */ @@ -1107,6 +1121,26 @@ static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state) /* set/unset hw trigger */ at91_adc_writel(st, TRGR, status); +} + +static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state) +{ + struct iio_dev *indio = iio_trigger_get_drvdata(trig); + struct at91_adc_state *st = iio_priv(indio); + int ret; + + if (state) { + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; + } + + at91_adc_configure_trigger_registers(st, state); + + if (!state) { + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + } return 0; } @@ -1265,11 +1299,15 @@ static int at91_adc_buffer_prepare(struct iio_dev *indio_dev) if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES)) return -EINVAL; + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; + /* we continue with the triggered buffer */ ret = at91_adc_dma_start(indio_dev); if (ret) { dev_err(&indio_dev->dev, "buffer prepare failed\n"); - return ret; + goto pm_runtime_put; } for_each_set_bit(bit, indio_dev->active_scan_mask, @@ -1292,12 +1330,16 @@ static int at91_adc_buffer_prepare(struct iio_dev *indio_dev) if (at91_adc_buffer_check_use_irq(indio_dev, st)) at91_adc_writel(st, IER, AT91_SAMA5D2_IER_DRDY); - return 0; +pm_runtime_put: + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + return ret; } static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev) { struct at91_adc_state *st = iio_priv(indio_dev); + int ret; u8 bit; /* check if we are disabling triggered buffer or the touchscreen */ @@ -1308,6 +1350,10 @@ static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev) if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES)) return -EINVAL; + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; + /* * For each enable channel we must disable it in hardware. * In the case of DMA, we must read the last converted value @@ -1343,6 +1389,9 @@ static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev) if (st->dma_st.dma_chan) dmaengine_terminate_sync(st->dma_st.dma_chan); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + return 0; } @@ -1531,12 +1580,17 @@ static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq, { struct at91_adc_state *st = iio_priv(indio_dev); unsigned f_per, prescal, startup, mr; + int ret; f_per = clk_get_rate(st->per_clk); prescal = (f_per / (2 * freq)) - 1; startup = at91_adc_startup_time(startup_time, freq / 1000); + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return; + mr = at91_adc_readl(st, MR); mr &= ~(AT91_SAMA5D2_MR_STARTUP_MASK | AT91_SAMA5D2_MR_PRESCAL_MASK); mr |= AT91_SAMA5D2_MR_STARTUP(startup); @@ -1544,6 +1598,9 @@ static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq, mr |= AT91_SAMA5D2_MR_TRACKTIM(tracktim); at91_adc_writel(st, MR, mr); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u, tracktim=%u\n", freq, startup, prescal, tracktim); st->current_sample_rate = freq; @@ -1680,6 +1737,10 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, u16 tmp_val; int ret; + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; + /* * Keep in mind that we cannot use software trigger or touchscreen * if external trigger is enabled @@ -1691,7 +1752,7 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, if (ret > 0) ret = at91_adc_adjust_val_osr(st, val); - return ret; + goto pm_runtime_put; } if (chan->type == IIO_PRESSURE) { ret = at91_adc_read_pressure(st, chan->channel, @@ -1700,7 +1761,7 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, if (ret > 0) ret = at91_adc_adjust_val_osr(st, val); - return ret; + goto pm_runtime_put; } /* in this case we have a voltage or temperature channel */ @@ -1742,6 +1803,9 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev, /* Needed to ACK the DRDY interruption */ at91_adc_readl(st, LCDR); +pm_runtime_put: + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); return ret; } @@ -1811,6 +1875,10 @@ static int at91_adc_read_temp(struct iio_dev *indio_dev, return ret; mutex_lock(&st->lock); + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + goto unlock; + at91_adc_temp_sensor_configure(st, true); /* Read VBG. */ @@ -1829,6 +1897,9 @@ static int at91_adc_read_temp(struct iio_dev *indio_dev, restore_config: /* Revert previous settings. */ at91_adc_temp_sensor_configure(st, false); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); +unlock: mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); if (ret < 0) @@ -2373,13 +2444,19 @@ static int at91_adc_probe(struct platform_device *pdev) if (ret) goto vref_disable; - at91_adc_hw_init(indio_dev); - platform_set_drvdata(pdev, indio_dev); + st->dev = &pdev->dev; + pm_runtime_set_autosuspend_delay(st->dev, 500); + pm_runtime_use_autosuspend(st->dev); + pm_runtime_set_active(st->dev); + pm_runtime_enable(st->dev); + pm_runtime_get_noresume(st->dev); + + at91_adc_hw_init(indio_dev); ret = at91_adc_buffer_and_trigger_init(&pdev->dev, indio_dev); if (ret < 0) - goto per_clk_disable_unprepare; + goto err_pm_disable; if (dma_coerce_mask_and_coherent(&indio_dev->dev, DMA_BIT_MASK(32))) dev_info(&pdev->dev, "cannot set DMA mask to 32-bit\n"); @@ -2395,11 +2472,18 @@ static int at91_adc_probe(struct platform_device *pdev) dev_info(&pdev->dev, "version: %x\n", readl_relaxed(st->base + st->soc_info.platform->layout->VERSION)); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + return 0; dma_disable: at91_adc_dma_disable(st); -per_clk_disable_unprepare: +err_pm_disable: + pm_runtime_put_noidle(st->dev); + pm_runtime_disable(st->dev); + pm_runtime_set_suspended(st->dev); + pm_runtime_dont_use_autosuspend(st->dev); clk_disable_unprepare(st->per_clk); vref_disable: regulator_disable(st->vref); @@ -2417,6 +2501,8 @@ static int at91_adc_remove(struct platform_device *pdev) at91_adc_dma_disable(st); + pm_runtime_disable(st->dev); + pm_runtime_set_suspended(st->dev); clk_disable_unprepare(st->per_clk); regulator_disable(st->vref); @@ -2429,6 +2515,11 @@ static int at91_adc_suspend(struct device *dev) { struct iio_dev *indio_dev = dev_get_drvdata(dev); struct at91_adc_state *st = iio_priv(indio_dev); + int ret; + + ret = pm_runtime_resume_and_get(st->dev); + if (ret < 0) + return ret; if (iio_buffer_enabled(indio_dev)) at91_adc_buffer_postdisable(indio_dev); @@ -2441,6 +2532,8 @@ static int at91_adc_suspend(struct device *dev) */ at91_adc_writel(st, CR, AT91_SAMA5D2_CR_SWRST); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_noidle(st->dev); clk_disable_unprepare(st->per_clk); regulator_disable(st->vref); regulator_disable(st->reg); @@ -2470,18 +2563,28 @@ static int at91_adc_resume(struct device *dev) if (ret) goto vref_disable_resume; + pm_runtime_get_noresume(st->dev); + at91_adc_hw_init(indio_dev); /* reconfiguring trigger hardware state */ - if (!iio_buffer_enabled(indio_dev)) - return 0; + if (iio_buffer_enabled(indio_dev)) { + ret = at91_adc_buffer_prepare(indio_dev); + if (ret) + goto pm_runtime_put; - ret = at91_adc_buffer_prepare(indio_dev); - if (ret) - goto vref_disable_resume; + at91_adc_configure_trigger_registers(st, true); + } - return at91_adc_configure_trigger(st->trig, true); + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_autosuspend(st->dev); + return 0; + +pm_runtime_put: + pm_runtime_mark_last_busy(st->dev); + pm_runtime_put_noidle(st->dev); + clk_disable_unprepare(st->per_clk); vref_disable_resume: regulator_disable(st->vref); reg_disable_resume: @@ -2491,8 +2594,29 @@ resume_failed: return ret; } -static DEFINE_SIMPLE_DEV_PM_OPS(at91_adc_pm_ops, at91_adc_suspend, - at91_adc_resume); +static int at91_adc_runtime_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct at91_adc_state *st = iio_priv(indio_dev); + + clk_disable(st->per_clk); + + return 0; +} + +static int at91_adc_runtime_resume(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct at91_adc_state *st = iio_priv(indio_dev); + + return clk_enable(st->per_clk); +} + +static const struct dev_pm_ops at91_adc_pm_ops = { + SYSTEM_SLEEP_PM_OPS(at91_adc_suspend, at91_adc_resume) + RUNTIME_PM_OPS(at91_adc_runtime_suspend, at91_adc_runtime_resume, + NULL) +}; static const struct of_device_id at91_adc_dt_match[] = { { @@ -2513,7 +2637,7 @@ static struct platform_driver at91_adc_driver = { .driver = { .name = "at91-sama5d2_adc", .of_match_table = at91_adc_dt_match, - .pm = pm_sleep_ptr(&at91_adc_pm_ops), + .pm = pm_ptr(&at91_adc_pm_ops), }, }; module_platform_driver(at91_adc_driver) From 15b2ac67859006bace228cbdc8607d0ea0af4e89 Mon Sep 17 00:00:00 2001 From: Marijn Suijten Date: Fri, 5 Aug 2022 15:57:26 +0200 Subject: [PATCH 031/142] iio: adc: qcom-spmi-adc5: Add missing VCOIN/GPIO[134] channels These channels are specified in downstream kernels [1] and actively used by e.g. the Sony Seine platform on the SM6125 SoC. Note that GPIO2 isn't used on this platform and, while the definition downstream is identical to the other GPIOx_100K_PU definitions, has been omitted for lack of proper testing. [1]: https://source.codeaurora.org/quic/la/kernel/msm-4.14/tree/drivers/iio/adc/qcom-spmi-adc5.c?h=LA.UM.7.11.r1-05200-NICOBAR.0#n688 Signed-off-by: Marijn Suijten Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20220805135729.1037079-3-marijn.suijten@somainline.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/qcom-spmi-adc5.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index 87438d1e5c0b..0dc4fe612433 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -526,6 +526,8 @@ static const struct adc5_channels adc5_chans_pmic[ADC5_MAX_CHANNEL] = { SCALE_HW_CALIB_DEFAULT) [ADC5_VBAT_SNS] = ADC5_CHAN_VOLT("vbat_sns", 1, SCALE_HW_CALIB_DEFAULT) + [ADC5_VCOIN] = ADC5_CHAN_VOLT("vcoin", 1, + SCALE_HW_CALIB_DEFAULT) [ADC5_DIE_TEMP] = ADC5_CHAN_TEMP("die_temp", 0, SCALE_HW_CALIB_PMIC_THERM) [ADC5_USB_IN_I] = ADC5_CHAN_VOLT("usb_in_i_uv", 0, @@ -549,6 +551,12 @@ static const struct adc5_channels adc5_chans_pmic[ADC5_MAX_CHANNEL] = { SCALE_HW_CALIB_THERM_100K_PULLUP) [ADC5_AMUX_THM2] = ADC5_CHAN_TEMP("amux_thm2", 0, SCALE_HW_CALIB_PM5_SMB_TEMP) + [ADC5_GPIO1_100K_PU] = ADC5_CHAN_TEMP("gpio1_100k_pu", 0, + SCALE_HW_CALIB_THERM_100K_PULLUP) + [ADC5_GPIO3_100K_PU] = ADC5_CHAN_TEMP("gpio3_100k_pu", 0, + SCALE_HW_CALIB_THERM_100K_PULLUP) + [ADC5_GPIO4_100K_PU] = ADC5_CHAN_TEMP("gpio4_100k_pu", 0, + SCALE_HW_CALIB_THERM_100K_PULLUP) }; static const struct adc5_channels adc7_chans_pmic[ADC5_MAX_CHANNEL] = { From 79c3e84874c7d14f04ad58313b64955a0d2e9437 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:49 +0200 Subject: [PATCH 032/142] iio: inkern: only release the device node when done with it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 'of_node_put()' can potentially release the memory pointed to by 'iiospec.np' which would leave us with an invalid pointer (and we would still pass it in 'of_xlate()'). Note that it is not guaranteed for the of_node lifespan to be attached to the device (to which is attached) lifespan so that there is (even though very unlikely) the possibility for the node to be freed while the device is still around. Thus, as there are indeed some of_xlate users which do access the node, a race is indeed possible. As such, we can only release the node after we are done with it. Fixes: 17d82b47a215d ("iio: Add OF support") Signed-off-by: Nuno Sá Link: https://lore.kernel.org/r/20220715122903.332535-2-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index df74765d33dc..9d87057794fc 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -165,9 +165,10 @@ static int __of_iio_channel_get(struct iio_channel *channel, idev = bus_find_device(&iio_bus_type, NULL, iiospec.np, iio_dev_node_match); - of_node_put(iiospec.np); - if (idev == NULL) + if (idev == NULL) { + of_node_put(iiospec.np); return -EPROBE_DEFER; + } indio_dev = dev_to_iio_dev(idev); channel->indio_dev = indio_dev; @@ -175,6 +176,7 @@ static int __of_iio_channel_get(struct iio_channel *channel, index = indio_dev->info->of_xlate(indio_dev, &iiospec); else index = __of_iio_simple_xlate(indio_dev, &iiospec); + of_node_put(iiospec.np); if (index < 0) goto err_put; channel->channel = &indio_dev->channels[index]; From 9e878dbc0e8322f8b2f5ab0093c1e89926362dbe Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:50 +0200 Subject: [PATCH 033/142] iio: inkern: fix return value in devm_of_iio_channel_get_by_name() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit of_iio_channel_get_by_name() can either return NULL or an error pointer so that only doing IS_ERR() is not enough. Fix it by checking the NULL pointer case and return -ENODEV in that case. Note this is done like this so that users of the function (which only check for error pointers) do not need to be changed. This is not ideal since we are losing error codes and as such, in a follow up change, things will be unified so that of_iio_channel_get_by_name() only returns error codes. Fixes: 6e39b145cef7 ("iio: provide of_iio_channel_get_by_name() and devm_ version it") Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-3-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 9d87057794fc..87fd2a0d44f2 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -412,6 +412,8 @@ struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev, channel = of_iio_channel_get_by_name(np, channel_name); if (IS_ERR(channel)) return channel; + if (!channel) + return ERR_PTR(-ENODEV); ret = devm_add_action_or_reset(dev, devm_iio_channel_free, channel); if (ret) From ed5e5ed4e377599825d32162a6ff3e9d2d89d200 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:51 +0200 Subject: [PATCH 034/142] iio: inkern: only return error codes in iio_channel_get_*() APIs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit APIs like of_iio_channel_get_by_name() and of_iio_channel_get_all() were returning a mix of NULL and pointers with NULL being the way to "notify" that we should do a "system" lookup for channels. This make it very confusing and prone to errors as commit 9f63cc0921ec ("iio: inkern: fix return value in devm_of_iio_channel_get_by_name()") proves. On top of this, patterns like 'if (channel != NULL) return channel' were being used where channel could actually be an error code which makes the code hard to read. This change also makes some functional changes on how errors were being handled. In the original behavior, even if we get an error like '-ENOMEM', we still continue with the search. We should only continue to lookup for the channel when it makes sense to do so. Hence, the main error handling in 'of_iio_channel_get_by_name()' is changed to the following logic: * If a channel 'name' is provided and we do find it via 'io-channel-names', we should be able to get it. If we get any error, we should not proceed with the lookup. Moreover, we should return an error so that callers won't proceed with a system lookup. * If a channel 'name' is provided and we cannot find it ('index < 0'), 'of_parse_phandle_with_args()' is expected to fail with '-EINVAL'. Hence, we should only continue if we get that error. * If a channel 'name' is not provided we should only carry on with the search if 'of_parse_phandle_with_args()' returns '-ENOENT'. Also note that a system channel lookup is only done if the returned error code (from 'of_iio_channel_get_by_name()' or 'of_iio_channel_get_all()' is -ENODEV. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-4-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 54 ++++++++++++++++++++++++++++++++------------ 1 file changed, 39 insertions(+), 15 deletions(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 87fd2a0d44f2..49913660e087 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -214,7 +214,7 @@ err_free_channel: struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, const char *name) { - struct iio_channel *chan = NULL; + struct iio_channel *chan; /* Walk up the tree of devices looking for a matching iio channel */ while (np) { @@ -231,11 +231,33 @@ struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, name); chan = of_iio_channel_get(np, index); if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER) - break; - else if (name && index >= 0) { - pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n", - np, name ? name : "", index); - return NULL; + return chan; + if (name) { + if (index >= 0) { + pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n", + np, name, index); + /* + * In this case, we found 'name' in 'io-channel-names' + * but somehow we still fail so that we should not proceed + * with any other lookup. Hence, explicitly return -EINVAL + * (maybe not the better error code) so that the caller + * won't do a system lookup. + */ + return ERR_PTR(-EINVAL); + } + /* + * If index < 0, then of_parse_phandle_with_args() fails + * with -EINVAL which is expected. We should not proceed + * if we get any other error. + */ + if (PTR_ERR(chan) != -EINVAL) + return chan; + } else if (PTR_ERR(chan) != -ENOENT) { + /* + * if !name, then we should only proceed the lookup if + * of_parse_phandle_with_args() returns -ENOENT. + */ + return chan; } /* @@ -245,10 +267,10 @@ struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, */ np = np->parent; if (np && !of_get_property(np, "io-channel-ranges", NULL)) - return NULL; + return ERR_PTR(-ENODEV); } - return chan; + return ERR_PTR(-ENODEV); } EXPORT_SYMBOL_GPL(of_iio_channel_get_by_name); @@ -267,8 +289,8 @@ static struct iio_channel *of_iio_channel_get_all(struct device *dev) break; } while (++nummaps); - if (nummaps == 0) /* no error, return NULL to search map table */ - return NULL; + if (nummaps == 0) + return ERR_PTR(-ENODEV); /* NULL terminated array to save passing size */ chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL); @@ -295,7 +317,7 @@ error_free_chans: static inline struct iio_channel *of_iio_channel_get_all(struct device *dev) { - return NULL; + return ERR_PTR(-ENODEV); } #endif /* CONFIG_OF */ @@ -362,7 +384,7 @@ struct iio_channel *iio_channel_get(struct device *dev, if (dev) { channel = of_iio_channel_get_by_name(dev->of_node, channel_name); - if (channel != NULL) + if (!IS_ERR(channel) || PTR_ERR(channel) != -ENODEV) return channel; } @@ -412,8 +434,6 @@ struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev, channel = of_iio_channel_get_by_name(np, channel_name); if (IS_ERR(channel)) return channel; - if (!channel) - return ERR_PTR(-ENODEV); ret = devm_add_action_or_reset(dev, devm_iio_channel_free, channel); if (ret) @@ -436,7 +456,11 @@ struct iio_channel *iio_channel_get_all(struct device *dev) return ERR_PTR(-EINVAL); chans = of_iio_channel_get_all(dev); - if (chans) + /* + * We only want to carry on if the error is -ENODEV. Anything else + * should be reported up the stack. + */ + if (!IS_ERR(chans) || PTR_ERR(chans) != -ENODEV) return chans; name = dev_name(dev); From d6bb09eab2b3c4c55e5f6006cf8e759439e3e741 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:52 +0200 Subject: [PATCH 035/142] iio: inkern: split of_iio_channel_get_by_name() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This change splits of_iio_channel_get_by_name() so that it decouples looking for channels in the current node from looking in it's parents nodes. This will be helpful when moving to fwnode properties where we need to release the handles when looking for channels in parent's nodes. No functional change intended... Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-5-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 116 +++++++++++++++++++++++++------------------ 1 file changed, 67 insertions(+), 49 deletions(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 49913660e087..9e0c7cc3a093 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -211,63 +211,81 @@ err_free_channel: return ERR_PTR(err); } +static struct iio_channel *__of_iio_channel_get_by_name(struct device_node *np, + const char *name) +{ + struct iio_channel *chan; + int index = 0; + + /* + * For named iio channels, first look up the name in the + * "io-channel-names" property. If it cannot be found, the + * index will be an error code, and of_iio_channel_get() + * will fail. + */ + if (name) + index = of_property_match_string(np, "io-channel-names", name); + + chan = of_iio_channel_get(np, index); + if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER) + return chan; + if (name) { + if (index >= 0) { + pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n", + np, name, index); + /* + * In this case, we found 'name' in 'io-channel-names' + * but somehow we still fail so that we should not proceed + * with any other lookup. Hence, explicitly return -EINVAL + * (maybe not the better error code) so that the caller + * won't do a system lookup. + */ + return ERR_PTR(-EINVAL); + } + /* + * If index < 0, then of_parse_phandle_with_args() fails + * with -EINVAL which is expected. We should not proceed + * if we get any other error. + */ + if (PTR_ERR(chan) != -EINVAL) + return chan; + } else if (PTR_ERR(chan) != -ENOENT) { + /* + * if !name, then we should only proceed the lookup if + * of_parse_phandle_with_args() returns -ENOENT. + */ + return chan; + } + + /* so we continue the lookup */ + return ERR_PTR(-ENODEV); +} + struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, const char *name) { struct iio_channel *chan; /* Walk up the tree of devices looking for a matching iio channel */ + chan = __of_iio_channel_get_by_name(np, name); + if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) + return chan; + + /* + * No matching IIO channel found on this node. + * If the parent node has a "io-channel-ranges" property, + * then we can try one of its channels. + */ + np = np->parent; while (np) { - int index = 0; - - /* - * For named iio channels, first look up the name in the - * "io-channel-names" property. If it cannot be found, the - * index will be an error code, and of_iio_channel_get() - * will fail. - */ - if (name) - index = of_property_match_string(np, "io-channel-names", - name); - chan = of_iio_channel_get(np, index); - if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER) - return chan; - if (name) { - if (index >= 0) { - pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n", - np, name, index); - /* - * In this case, we found 'name' in 'io-channel-names' - * but somehow we still fail so that we should not proceed - * with any other lookup. Hence, explicitly return -EINVAL - * (maybe not the better error code) so that the caller - * won't do a system lookup. - */ - return ERR_PTR(-EINVAL); - } - /* - * If index < 0, then of_parse_phandle_with_args() fails - * with -EINVAL which is expected. We should not proceed - * if we get any other error. - */ - if (PTR_ERR(chan) != -EINVAL) - return chan; - } else if (PTR_ERR(chan) != -ENOENT) { - /* - * if !name, then we should only proceed the lookup if - * of_parse_phandle_with_args() returns -ENOENT. - */ - return chan; - } - - /* - * No matching IIO channel found on this node. - * If the parent node has a "io-channel-ranges" property, - * then we can try one of its channels. - */ - np = np->parent; - if (np && !of_get_property(np, "io-channel-ranges", NULL)) + if (!of_get_property(np, "io-channel-ranges", NULL)) return ERR_PTR(-ENODEV); + + chan = __of_iio_channel_get_by_name(np, name); + if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) + return chan; + + np = np->parent; } return ERR_PTR(-ENODEV); From 1e64b9c5f9a01f1a752438724bc83180c451e1c7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:53 +0200 Subject: [PATCH 036/142] iio: inkern: move to fwnode properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This moves the IIO in kernel interface to use fwnode properties and thus be firmware agnostic. Note that the interface is still not firmware agnostic. At this point we have both OF and fwnode interfaces so that we don't break any user. On top of this we also want to have a per driver conversion and that is the main reason we have both of_xlate() and fwnode_xlate() support. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-6-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 157 ++++++++++++++++++----------------- include/linux/iio/consumer.h | 36 ++++---- include/linux/iio/iio.h | 5 ++ 3 files changed, 108 insertions(+), 90 deletions(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 9e0c7cc3a093..9cfa66ef9536 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -5,6 +5,7 @@ */ #include #include +#include #include #include #include @@ -117,15 +118,8 @@ static const struct iio_chan_spec return chan; } -#ifdef CONFIG_OF - -static int iio_dev_node_match(struct device *dev, const void *data) -{ - return dev->of_node == data && dev->type == &iio_device_type; -} - /** - * __of_iio_simple_xlate - translate iiospec to the IIO channel index + * __fwnode_iio_simple_xlate - translate iiospec to the IIO channel index * @indio_dev: pointer to the iio_dev structure * @iiospec: IIO specifier as found in the device tree * @@ -134,14 +128,14 @@ static int iio_dev_node_match(struct device *dev, const void *data) * whether IIO index is less than num_channels (that is specified in the * iio_dev). */ -static int __of_iio_simple_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int __fwnode_iio_simple_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { - if (!iiospec->args_count) + if (!iiospec->nargs) return 0; if (iiospec->args[0] >= indio_dev->num_channels) { - dev_err(&indio_dev->dev, "invalid channel index %u\n", + dev_err(&indio_dev->dev, "invalid channel index %llu\n", iiospec->args[0]); return -EINVAL; } @@ -149,34 +143,55 @@ static int __of_iio_simple_xlate(struct iio_dev *indio_dev, return iiospec->args[0]; } -static int __of_iio_channel_get(struct iio_channel *channel, - struct device_node *np, int index) +/* + * Simple helper to copy fwnode_reference_args into of_phandle_args so we + * can pass it to of_xlate(). Ultimate goal is to drop this together with + * of_xlate(). + */ +static int __fwnode_to_of_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { + struct of_phandle_args of_args; + unsigned int i; + + of_args.args_count = iiospec->nargs; + of_args.np = to_of_node(iiospec->fwnode); + + for (i = 0; i < MAX_PHANDLE_ARGS; i++) + of_args.args[i] = i < iiospec->nargs ? iiospec->args[i] : 0; + + return indio_dev->info->of_xlate(indio_dev, &of_args); +} + +static int __fwnode_iio_channel_get(struct iio_channel *channel, + struct fwnode_handle *fwnode, int index) +{ + struct fwnode_reference_args iiospec; struct device *idev; struct iio_dev *indio_dev; int err; - struct of_phandle_args iiospec; - err = of_parse_phandle_with_args(np, "io-channels", - "#io-channel-cells", - index, &iiospec); + err = fwnode_property_get_reference_args(fwnode, "io-channels", + "#io-channel-cells", 0, + index, &iiospec); if (err) return err; - idev = bus_find_device(&iio_bus_type, NULL, iiospec.np, - iio_dev_node_match); + idev = bus_find_device_by_fwnode(&iio_bus_type, iiospec.fwnode); if (idev == NULL) { - of_node_put(iiospec.np); + fwnode_handle_put(iiospec.fwnode); return -EPROBE_DEFER; } indio_dev = dev_to_iio_dev(idev); channel->indio_dev = indio_dev; if (indio_dev->info->of_xlate) - index = indio_dev->info->of_xlate(indio_dev, &iiospec); + index = __fwnode_to_of_xlate(indio_dev, &iiospec); + else if (indio_dev->info->fwnode_xlate) + index = indio_dev->info->fwnode_xlate(indio_dev, &iiospec); else - index = __of_iio_simple_xlate(indio_dev, &iiospec); - of_node_put(iiospec.np); + index = __fwnode_iio_simple_xlate(indio_dev, &iiospec); + fwnode_handle_put(iiospec.fwnode); if (index < 0) goto err_put; channel->channel = &indio_dev->channels[index]; @@ -188,7 +203,8 @@ err_put: return index; } -static struct iio_channel *of_iio_channel_get(struct device_node *np, int index) +static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode, + int index) { struct iio_channel *channel; int err; @@ -200,7 +216,7 @@ static struct iio_channel *of_iio_channel_get(struct device_node *np, int index) if (channel == NULL) return ERR_PTR(-ENOMEM); - err = __of_iio_channel_get(channel, np, index); + err = __fwnode_iio_channel_get(channel, fwnode, index); if (err) goto err_free_channel; @@ -211,8 +227,8 @@ err_free_channel: return ERR_PTR(err); } -static struct iio_channel *__of_iio_channel_get_by_name(struct device_node *np, - const char *name) +static struct iio_channel * +__fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode, const char *name) { struct iio_channel *chan; int index = 0; @@ -220,19 +236,20 @@ static struct iio_channel *__of_iio_channel_get_by_name(struct device_node *np, /* * For named iio channels, first look up the name in the * "io-channel-names" property. If it cannot be found, the - * index will be an error code, and of_iio_channel_get() + * index will be an error code, and fwnode_iio_channel_get() * will fail. */ if (name) - index = of_property_match_string(np, "io-channel-names", name); + index = fwnode_property_match_string(fwnode, "io-channel-names", + name); - chan = of_iio_channel_get(np, index); + chan = fwnode_iio_channel_get(fwnode, index); if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER) return chan; if (name) { if (index >= 0) { - pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n", - np, name, index); + pr_err("ERROR: could not get IIO channel %pfw:%s(%i)\n", + fwnode, name, index); /* * In this case, we found 'name' in 'io-channel-names' * but somehow we still fail so that we should not proceed @@ -243,16 +260,16 @@ static struct iio_channel *__of_iio_channel_get_by_name(struct device_node *np, return ERR_PTR(-EINVAL); } /* - * If index < 0, then of_parse_phandle_with_args() fails - * with -EINVAL which is expected. We should not proceed - * if we get any other error. + * If index < 0, then fwnode_property_get_reference_args() fails + * with -EINVAL or -ENOENT (ACPI case) which is expected. We + * should not proceed if we get any other error. */ - if (PTR_ERR(chan) != -EINVAL) + if (PTR_ERR(chan) != -EINVAL && PTR_ERR(chan) != -ENOENT) return chan; } else if (PTR_ERR(chan) != -ENOENT) { /* * if !name, then we should only proceed the lookup if - * of_parse_phandle_with_args() returns -ENOENT. + * fwnode_property_get_reference_args() returns -ENOENT. */ return chan; } @@ -261,13 +278,14 @@ static struct iio_channel *__of_iio_channel_get_by_name(struct device_node *np, return ERR_PTR(-ENODEV); } -struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, - const char *name) +struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode, + const char *name) { + struct fwnode_handle *parent; struct iio_channel *chan; /* Walk up the tree of devices looking for a matching iio channel */ - chan = __of_iio_channel_get_by_name(np, name); + chan = __fwnode_iio_channel_get_by_name(fwnode, name); if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) return chan; @@ -276,33 +294,34 @@ struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, * If the parent node has a "io-channel-ranges" property, * then we can try one of its channels. */ - np = np->parent; - while (np) { - if (!of_get_property(np, "io-channel-ranges", NULL)) + fwnode_for_each_parent_node(fwnode, parent) { + if (!fwnode_property_present(parent, "io-channel-ranges")) { + fwnode_handle_put(parent); return ERR_PTR(-ENODEV); + } - chan = __of_iio_channel_get_by_name(np, name); - if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) + chan = __fwnode_iio_channel_get_by_name(fwnode, name); + if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) { + fwnode_handle_put(parent); return chan; - - np = np->parent; + } } return ERR_PTR(-ENODEV); } -EXPORT_SYMBOL_GPL(of_iio_channel_get_by_name); +EXPORT_SYMBOL_GPL(fwnode_iio_channel_get_by_name); -static struct iio_channel *of_iio_channel_get_all(struct device *dev) +static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev) { + struct fwnode_handle *fwnode = dev_fwnode(dev); struct iio_channel *chans; int i, mapind, nummaps = 0; int ret; do { - ret = of_parse_phandle_with_args(dev->of_node, - "io-channels", - "#io-channel-cells", - nummaps, NULL); + ret = fwnode_property_get_reference_args(fwnode, "io-channels", + "#io-channel-cells", 0, + nummaps, NULL); if (ret < 0) break; } while (++nummaps); @@ -315,10 +334,9 @@ static struct iio_channel *of_iio_channel_get_all(struct device *dev) if (chans == NULL) return ERR_PTR(-ENOMEM); - /* Search for OF matches */ + /* Search for FW matches */ for (mapind = 0; mapind < nummaps; mapind++) { - ret = __of_iio_channel_get(&chans[mapind], dev->of_node, - mapind); + ret = __fwnode_iio_channel_get(&chans[mapind], fwnode, mapind); if (ret) goto error_free_chans; } @@ -331,15 +349,6 @@ error_free_chans: return ERR_PTR(ret); } -#else /* CONFIG_OF */ - -static inline struct iio_channel *of_iio_channel_get_all(struct device *dev) -{ - return ERR_PTR(-ENODEV); -} - -#endif /* CONFIG_OF */ - static struct iio_channel *iio_channel_get_sys(const char *name, const char *channel_name) { @@ -400,8 +409,8 @@ struct iio_channel *iio_channel_get(struct device *dev, struct iio_channel *channel; if (dev) { - channel = of_iio_channel_get_by_name(dev->of_node, - channel_name); + channel = fwnode_iio_channel_get_by_name(dev_fwnode(dev), + channel_name); if (!IS_ERR(channel) || PTR_ERR(channel) != -ENODEV) return channel; } @@ -442,14 +451,14 @@ struct iio_channel *devm_iio_channel_get(struct device *dev, } EXPORT_SYMBOL_GPL(devm_iio_channel_get); -struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev, - struct device_node *np, - const char *channel_name) +struct iio_channel *devm_fwnode_iio_channel_get_by_name(struct device *dev, + struct fwnode_handle *fwnode, + const char *channel_name) { struct iio_channel *channel; int ret; - channel = of_iio_channel_get_by_name(np, channel_name); + channel = fwnode_iio_channel_get_by_name(fwnode, channel_name); if (IS_ERR(channel)) return channel; @@ -459,7 +468,7 @@ struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev, return channel; } -EXPORT_SYMBOL_GPL(devm_of_iio_channel_get_by_name); +EXPORT_SYMBOL_GPL(devm_fwnode_iio_channel_get_by_name); struct iio_channel *iio_channel_get_all(struct device *dev) { @@ -473,7 +482,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev) if (dev == NULL) return ERR_PTR(-EINVAL); - chans = of_iio_channel_get_all(dev); + chans = fwnode_iio_channel_get_all(dev); /* * We only want to carry on if the error is -ENODEV. Anything else * should be reported up the stack. diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 5fa5957586cf..2adb1306da3e 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -7,6 +7,7 @@ #ifndef _IIO_INKERN_CONSUMER_H_ #define _IIO_INKERN_CONSUMER_H_ +#include #include #include @@ -14,6 +15,7 @@ struct iio_dev; struct iio_chan_spec; struct device; struct device_node; +struct fwnode_handle; /** * struct iio_channel - everything needed for a consumer to use a channel @@ -99,26 +101,20 @@ void iio_channel_release_all(struct iio_channel *chan); struct iio_channel *devm_iio_channel_get_all(struct device *dev); /** - * of_iio_channel_get_by_name() - get description of all that is needed to access channel. - * @np: Pointer to consumer device tree node + * fwnode_iio_channel_get_by_name() - get description of all that is needed to access channel. + * @fwnode: Pointer to consumer Firmware node * @consumer_channel: Unique name to identify the channel on the consumer * side. This typically describes the channels use within * the consumer. E.g. 'battery_voltage' */ -#ifdef CONFIG_OF -struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, const char *name); -#else -static inline struct iio_channel * -of_iio_channel_get_by_name(struct device_node *np, const char *name) -{ - return NULL; -} -#endif +struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode, + const char *name); /** - * devm_of_iio_channel_get_by_name() - Resource managed version of of_iio_channel_get_by_name(). + * devm_fwnode_iio_channel_get_by_name() - Resource managed version of + * fwnode_iio_channel_get_by_name(). * @dev: Pointer to consumer device. - * @np: Pointer to consumer device tree node + * @fwnode: Pointer to consumer Firmware node * @consumer_channel: Unique name to identify the channel on the consumer * side. This typically describes the channels use within * the consumer. E.g. 'battery_voltage' @@ -129,9 +125,17 @@ of_iio_channel_get_by_name(struct device_node *np, const char *name) * The allocated iio channel is automatically released when the device is * unbound. */ -struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev, - struct device_node *np, - const char *consumer_channel); +struct iio_channel *devm_fwnode_iio_channel_get_by_name(struct device *dev, + struct fwnode_handle *fwnode, + const char *consumer_channel); + +static inline struct iio_channel +*devm_of_iio_channel_get_by_name(struct device *dev, struct device_node *np, + const char *consumer_channel) +{ + return devm_fwnode_iio_channel_get_by_name(dev, of_fwnode_handle(np), + consumer_channel); +} struct iio_cb_buffer; /** diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 5dfbfc991c69..6002f8a0baf1 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -18,6 +18,7 @@ */ struct of_phandle_args; +struct fwnode_reference_args; enum iio_shared_by { IIO_SEPARATE, @@ -429,6 +430,8 @@ struct iio_trigger; /* forward declaration */ * provide a custom of_xlate function that reads the * *args* and returns the appropriate index in registered * IIO channels array. + * @fwnode_xlate: fwnode based function pointer to obtain channel specifier index. + * Functionally the same as @of_xlate. * @hwfifo_set_watermark: function pointer to set the current hardware * fifo watermark level; see hwfifo_* entries in * Documentation/ABI/testing/sysfs-bus-iio for details on @@ -510,6 +513,8 @@ struct iio_info { unsigned *readval); int (*of_xlate)(struct iio_dev *indio_dev, const struct of_phandle_args *iiospec); + int (*fwnode_xlate)(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec); int (*hwfifo_set_watermark)(struct iio_dev *indio_dev, unsigned val); int (*hwfifo_flush_to_buffer)(struct iio_dev *indio_dev, unsigned count); From 17fe12a2fe2dc95f22efa388d60b396ca134c1ee Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:54 +0200 Subject: [PATCH 037/142] thermal: qcom: qcom-spmi-adc-tm5: convert to IIO fwnode API MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make usage of the new firmware agnostic API 'devm_of_iio_channel_get_by_name()' to get the IIO channel. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Acked-by: Daniel Lezcano Link: https://lore.kernel.org/r/20220715122903.332535-7-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/thermal/qcom/qcom-spmi-adc-tm5.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c index 073943cbcc2b..0a78053cb798 100644 --- a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c +++ b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c @@ -830,7 +830,8 @@ static int adc_tm5_get_dt_channel_data(struct adc_tm5_chip *adc_tm, } channel->adc_channel = args.args[0]; - channel->iio = devm_of_iio_channel_get_by_name(adc_tm->dev, node, NULL); + channel->iio = devm_fwnode_iio_channel_get_by_name(adc_tm->dev, + of_fwnode_handle(node), NULL); if (IS_ERR(channel->iio)) { ret = PTR_ERR(channel->iio); if (ret != -EPROBE_DEFER) From 9ac075972bd25c83a922d3b9548cbe952248bd8f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:55 +0200 Subject: [PATCH 038/142] iio: adc: ingenic-adc: convert to IIO fwnode interface MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move from 'of_xlate()' to 'fwnode_xlate()'. The end goal is to completely drop OF from the IIO inkernel interface. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-8-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ingenic-adc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index bf5c03c34f84..9e08f3abeea6 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -719,12 +719,12 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev, } } -static int ingenic_adc_of_xlate(struct iio_dev *iio_dev, - const struct of_phandle_args *iiospec) +static int ingenic_adc_fwnode_xlate(struct iio_dev *iio_dev, + const struct fwnode_reference_args *iiospec) { int i; - if (!iiospec->args_count) + if (!iiospec->nargs) return -EINVAL; for (i = 0; i < iio_dev->num_channels; ++i) @@ -743,7 +743,7 @@ static const struct iio_info ingenic_adc_info = { .write_raw = ingenic_adc_write_raw, .read_raw = ingenic_adc_read_raw, .read_avail = ingenic_adc_read_avail, - .of_xlate = ingenic_adc_of_xlate, + .fwnode_xlate = ingenic_adc_fwnode_xlate, }; static int ingenic_adc_buffer_enable(struct iio_dev *iio_dev) From dec7e2c83e678ed0c4cab56c1a099bd39ebfa408 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:56 +0200 Subject: [PATCH 039/142] iio: adc: ab8500-gpadc: convert to device properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the conversion to firmware agnostic device properties. As part of the conversion the IIO inkern interface 'of_xlate()' is also converted to 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF dependencies from IIO. Signed-off-by: Nuno Sá Acked-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-9-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ab8500-gpadc.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-) diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c index 930ce96e6ff5..4fa2126a354b 100644 --- a/drivers/iio/adc/ab8500-gpadc.c +++ b/drivers/iio/adc/ab8500-gpadc.c @@ -925,8 +925,8 @@ static int ab8500_gpadc_read_raw(struct iio_dev *indio_dev, return -EINVAL; } -static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int ab8500_gpadc_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { int i; @@ -938,7 +938,7 @@ static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev, } static const struct iio_info ab8500_gpadc_info = { - .of_xlate = ab8500_gpadc_of_xlate, + .fwnode_xlate = ab8500_gpadc_fwnode_xlate, .read_raw = ab8500_gpadc_read_raw, }; @@ -968,7 +968,7 @@ static int ab8500_gpadc_runtime_resume(struct device *dev) /** * ab8500_gpadc_parse_channel() - process devicetree channel configuration * @dev: pointer to containing device - * @np: device tree node for the channel to configure + * @fwnode: fw node for the channel to configure * @ch: channel info to fill in * @iio_chan: IIO channel specification to fill in * @@ -976,15 +976,15 @@ static int ab8500_gpadc_runtime_resume(struct device *dev) * and define usage for things like AUX GPADC inputs more precisely. */ static int ab8500_gpadc_parse_channel(struct device *dev, - struct device_node *np, + struct fwnode_handle *fwnode, struct ab8500_gpadc_chan_info *ch, struct iio_chan_spec *iio_chan) { - const char *name = np->name; + const char *name = fwnode_get_name(fwnode); u32 chan; int ret; - ret = of_property_read_u32(np, "reg", &chan); + ret = fwnode_property_read_u32(fwnode, "reg", &chan); if (ret) { dev_err(dev, "invalid channel number %s\n", name); return ret; @@ -1021,22 +1021,20 @@ static int ab8500_gpadc_parse_channel(struct device *dev, /** * ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT * @gpadc: the GPADC to configure the channels for - * @np: device tree node containing the channel configurations * @chans: the IIO channels we parsed * @nchans: the number of IIO channels we parsed */ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc, - struct device_node *np, struct iio_chan_spec **chans_parsed, unsigned int *nchans_parsed) { - struct device_node *child; + struct fwnode_handle *child; struct ab8500_gpadc_chan_info *ch; struct iio_chan_spec *iio_chans; unsigned int nchans; int i; - nchans = of_get_available_child_count(np); + nchans = device_get_child_node_count(gpadc->dev); if (!nchans) { dev_err(gpadc->dev, "no channel children\n"); return -ENODEV; @@ -1054,7 +1052,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc, return -ENOMEM; i = 0; - for_each_available_child_of_node(np, child) { + device_for_each_child_node(gpadc->dev, child) { struct iio_chan_spec *iio_chan; int ret; @@ -1064,7 +1062,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc, ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch, iio_chan); if (ret) { - of_node_put(child); + fwnode_handle_put(child); return ret; } i++; @@ -1081,7 +1079,6 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) struct ab8500_gpadc *gpadc; struct iio_dev *indio_dev; struct device *dev = &pdev->dev; - struct device_node *np = pdev->dev.of_node; struct iio_chan_spec *iio_chans; unsigned int n_iio_chans; int ret; @@ -1096,7 +1093,7 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) gpadc->dev = dev; gpadc->ab8500 = dev_get_drvdata(dev->parent); - ret = ab8500_gpadc_parse_channels(gpadc, np, &iio_chans, &n_iio_chans); + ret = ab8500_gpadc_parse_channels(gpadc, &iio_chans, &n_iio_chans); if (ret) return ret; From 34b6eb89351bc281d5323c119e2deb84273d4266 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:57 +0200 Subject: [PATCH 040/142] iio: adc: at91-sama5d2_adc: convert to device properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the conversion to firmware agnostic device properties. As part of the conversion the IIO inkern interface 'of_xlate()' is also converted to 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF dependencies from IIO. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Reviewed-by: Claudiu Beznea Link: https://lore.kernel.org/r/20220715122903.332535-10-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 8d8aa9691499..4294d6539cdb 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -16,8 +16,9 @@ #include #include #include -#include +#include #include +#include #include #include #include @@ -763,8 +764,8 @@ at91_adc_chan_get(struct iio_dev *indio_dev, int chan) return indio_dev->channels + index; } -static inline int at91_adc_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static inline int at91_adc_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { return at91_adc_chan_xlate(indio_dev, iiospec->args[0]); } @@ -2213,7 +2214,7 @@ static const struct iio_info at91_adc_info = { .read_raw = &at91_adc_read_raw, .write_raw = &at91_adc_write_raw, .update_scan_mode = &at91_adc_update_scan_mode, - .of_xlate = &at91_adc_of_xlate, + .fwnode_xlate = &at91_adc_fwnode_xlate, .hwfifo_set_watermark = &at91_adc_set_watermark, }; @@ -2306,6 +2307,7 @@ free_buf: static int at91_adc_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct iio_dev *indio_dev; struct at91_adc_state *st; struct resource *res; @@ -2319,7 +2321,7 @@ static int at91_adc_probe(struct platform_device *pdev) st = iio_priv(indio_dev); st->indio_dev = indio_dev; - st->soc_info.platform = of_device_get_match_data(&pdev->dev); + st->soc_info.platform = device_get_match_data(dev); ret = at91_adc_temp_sensor_init(st, &pdev->dev); /* Don't register temperature channel if initialization failed. */ @@ -2343,34 +2345,32 @@ static int at91_adc_probe(struct platform_device *pdev) st->oversampling_ratio = 1; - ret = of_property_read_u32(pdev->dev.of_node, - "atmel,min-sample-rate-hz", - &st->soc_info.min_sample_rate); + ret = device_property_read_u32(dev, "atmel,min-sample-rate-hz", + &st->soc_info.min_sample_rate); if (ret) { dev_err(&pdev->dev, "invalid or missing value for atmel,min-sample-rate-hz\n"); return ret; } - ret = of_property_read_u32(pdev->dev.of_node, - "atmel,max-sample-rate-hz", - &st->soc_info.max_sample_rate); + ret = device_property_read_u32(dev, "atmel,max-sample-rate-hz", + &st->soc_info.max_sample_rate); if (ret) { dev_err(&pdev->dev, "invalid or missing value for atmel,max-sample-rate-hz\n"); return ret; } - ret = of_property_read_u32(pdev->dev.of_node, "atmel,startup-time-ms", - &st->soc_info.startup_time); + ret = device_property_read_u32(dev, "atmel,startup-time-ms", + &st->soc_info.startup_time); if (ret) { dev_err(&pdev->dev, "invalid or missing value for atmel,startup-time-ms\n"); return ret; } - ret = of_property_read_u32(pdev->dev.of_node, - "atmel,trigger-edge-type", &edge_type); + ret = device_property_read_u32(dev, "atmel,trigger-edge-type", + &edge_type); if (ret) { dev_dbg(&pdev->dev, "atmel,trigger-edge-type not specified, only software trigger available\n"); From 9e90c1772fcb8fe3bf39c112b8ef6852e48dbc71 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:58 +0200 Subject: [PATCH 041/142] iio: adc: qcom-pm8xxx-xoadc: convert to device properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the conversion to firmware agnostic device properties. As part of the conversion the IIO inkern interface 'of_xlate()' is also converted to 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF dependencies from IIO. Signed-off-by: Nuno Sá Acked-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-11-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/qcom-pm8xxx-xoadc.c | 58 ++++++++++++++--------------- 1 file changed, 28 insertions(+), 30 deletions(-) diff --git a/drivers/iio/adc/qcom-pm8xxx-xoadc.c b/drivers/iio/adc/qcom-pm8xxx-xoadc.c index 5e9e56821075..eb424496ee1d 100644 --- a/drivers/iio/adc/qcom-pm8xxx-xoadc.c +++ b/drivers/iio/adc/qcom-pm8xxx-xoadc.c @@ -14,9 +14,9 @@ #include #include #include -#include -#include +#include #include +#include #include #include #include @@ -694,8 +694,8 @@ static int pm8xxx_read_raw(struct iio_dev *indio_dev, } } -static int pm8xxx_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int pm8xxx_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { struct pm8xxx_xoadc *adc = iio_priv(indio_dev); u8 pre_scale_mux; @@ -706,10 +706,10 @@ static int pm8xxx_of_xlate(struct iio_dev *indio_dev, * First cell is prescaler or premux, second cell is analog * mux. */ - if (iiospec->args_count != 2) { - dev_err(&indio_dev->dev, "wrong number of arguments for %pOFn need 2 got %d\n", - iiospec->np, - iiospec->args_count); + if (iiospec->nargs != 2) { + dev_err(&indio_dev->dev, "wrong number of arguments for %pfwP need 2 got %d\n", + iiospec->fwnode, + iiospec->nargs); return -EINVAL; } pre_scale_mux = (u8)iiospec->args[0]; @@ -727,34 +727,34 @@ static int pm8xxx_of_xlate(struct iio_dev *indio_dev, } static const struct iio_info pm8xxx_xoadc_info = { - .of_xlate = pm8xxx_of_xlate, + .fwnode_xlate = pm8xxx_fwnode_xlate, .read_raw = pm8xxx_read_raw, }; static int pm8xxx_xoadc_parse_channel(struct device *dev, - struct device_node *np, + struct fwnode_handle *fwnode, const struct xoadc_channel *hw_channels, struct iio_chan_spec *iio_chan, struct pm8xxx_chan_info *ch) { - const char *name = np->name; + const char *name = fwnode_get_name(fwnode); const struct xoadc_channel *hwchan; - u32 pre_scale_mux, amux_channel; + u32 pre_scale_mux, amux_channel, reg[2]; u32 rsv, dec; int ret; int chid; - ret = of_property_read_u32_index(np, "reg", 0, &pre_scale_mux); + ret = fwnode_property_read_u32_array(fwnode, "reg", reg, + ARRAY_SIZE(reg)); if (ret) { - dev_err(dev, "invalid pre scale/mux number %s\n", name); - return ret; - } - ret = of_property_read_u32_index(np, "reg", 1, &amux_channel); - if (ret) { - dev_err(dev, "invalid amux channel number %s\n", name); + dev_err(dev, "invalid pre scale/mux or amux channel number %s\n", + name); return ret; } + pre_scale_mux = reg[0]; + amux_channel = reg[1]; + /* Find the right channel setting */ chid = 0; hwchan = &hw_channels[0]; @@ -778,7 +778,7 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev, /* Everyone seems to use default ("type 2") decimation */ ch->decimation = VADC_DEF_DECIMATION; - if (!of_property_read_u32(np, "qcom,ratiometric", &rsv)) { + if (!fwnode_property_read_u32(fwnode, "qcom,ratiometric", &rsv)) { ch->calibration = VADC_CALIB_RATIOMETRIC; if (rsv > XOADC_RSV_MAX) { dev_err(dev, "%s too large RSV value %d\n", name, rsv); @@ -791,7 +791,7 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev, } /* Optional decimation, if omitted we use the default */ - ret = of_property_read_u32(np, "qcom,decimation", &dec); + ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &dec); if (!ret) { ret = qcom_vadc_decimation_from_dt(dec); if (ret < 0) { @@ -820,15 +820,14 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev, return 0; } -static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc, - struct device_node *np) +static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc) { - struct device_node *child; + struct fwnode_handle *child; struct pm8xxx_chan_info *ch; int ret; int i; - adc->nchans = of_get_available_child_count(np); + adc->nchans = device_get_child_node_count(adc->dev); if (!adc->nchans) { dev_err(adc->dev, "no channel children\n"); return -ENODEV; @@ -846,14 +845,14 @@ static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc, return -ENOMEM; i = 0; - for_each_available_child_of_node(np, child) { + device_for_each_child_node(adc->dev, child) { ch = &adc->chans[i]; ret = pm8xxx_xoadc_parse_channel(adc->dev, child, adc->variant->channels, &adc->iio_chans[i], ch); if (ret) { - of_node_put(child); + fwnode_handle_put(child); return ret; } i++; @@ -884,12 +883,11 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev) const struct xoadc_variant *variant; struct pm8xxx_xoadc *adc; struct iio_dev *indio_dev; - struct device_node *np = pdev->dev.of_node; struct regmap *map; struct device *dev = &pdev->dev; int ret; - variant = of_device_get_match_data(dev); + variant = device_get_match_data(dev); if (!variant) return -ENODEV; @@ -904,7 +902,7 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev) init_completion(&adc->complete); mutex_init(&adc->lock); - ret = pm8xxx_xoadc_parse_channels(adc, np); + ret = pm8xxx_xoadc_parse_channels(adc); if (ret) return ret; From e7c672d06b0777342672ee125548310d433855fc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:28:59 +0200 Subject: [PATCH 042/142] iio: adc: qcom-spmi-vadc: convert to device properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the conversion to firmware agnostic device properties. As part of the conversion the IIO inkern interface 'of_xlate()' is also converted to 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF dependencies from IIO. Signed-off-by: Nuno Sá Acked-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-12-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/qcom-spmi-vadc.c | 44 ++++++++++++++++---------------- 1 file changed, 22 insertions(+), 22 deletions(-) diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c index 34202ba52469..bcff0f62b70e 100644 --- a/drivers/iio/adc/qcom-spmi-vadc.c +++ b/drivers/iio/adc/qcom-spmi-vadc.c @@ -13,8 +13,9 @@ #include #include #include -#include +#include #include +#include #include #include #include @@ -481,8 +482,8 @@ static int vadc_read_raw(struct iio_dev *indio_dev, return ret; } -static int vadc_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int vadc_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { struct vadc_priv *vadc = iio_priv(indio_dev); unsigned int i; @@ -496,7 +497,7 @@ static int vadc_of_xlate(struct iio_dev *indio_dev, static const struct iio_info vadc_info = { .read_raw = vadc_read_raw, - .of_xlate = vadc_of_xlate, + .fwnode_xlate = vadc_fwnode_xlate, }; struct vadc_channels { @@ -647,15 +648,15 @@ static const struct vadc_channels vadc_chans[] = { VADC_CHAN_NO_SCALE(LR_MUX3_BUF_PU1_PU2_XO_THERM, 0) }; -static int vadc_get_dt_channel_data(struct device *dev, +static int vadc_get_fw_channel_data(struct device *dev, struct vadc_channel_prop *prop, - struct device_node *node) + struct fwnode_handle *fwnode) { - const char *name = node->name; + const char *name = fwnode_get_name(fwnode); u32 chan, value, varr[2]; int ret; - ret = of_property_read_u32(node, "reg", &chan); + ret = fwnode_property_read_u32(fwnode, "reg", &chan); if (ret) { dev_err(dev, "invalid channel number %s\n", name); return ret; @@ -669,7 +670,7 @@ static int vadc_get_dt_channel_data(struct device *dev, /* the channel has DT description */ prop->channel = chan; - ret = of_property_read_u32(node, "qcom,decimation", &value); + ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &value); if (!ret) { ret = qcom_vadc_decimation_from_dt(value); if (ret < 0) { @@ -682,7 +683,7 @@ static int vadc_get_dt_channel_data(struct device *dev, prop->decimation = VADC_DEF_DECIMATION; } - ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2); + ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2); if (!ret) { ret = vadc_prescaling_from_dt(varr[0], varr[1]); if (ret < 0) { @@ -695,7 +696,7 @@ static int vadc_get_dt_channel_data(struct device *dev, prop->prescale = vadc_chans[prop->channel].prescale_index; } - ret = of_property_read_u32(node, "qcom,hw-settle-time", &value); + ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value); if (!ret) { ret = vadc_hw_settle_time_from_dt(value); if (ret < 0) { @@ -708,7 +709,7 @@ static int vadc_get_dt_channel_data(struct device *dev, prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME; } - ret = of_property_read_u32(node, "qcom,avg-samples", &value); + ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value); if (!ret) { ret = vadc_avg_samples_from_dt(value); if (ret < 0) { @@ -721,7 +722,7 @@ static int vadc_get_dt_channel_data(struct device *dev, prop->avg_samples = VADC_DEF_AVG_SAMPLES; } - if (of_property_read_bool(node, "qcom,ratiometric")) + if (fwnode_property_read_bool(fwnode, "qcom,ratiometric")) prop->calibration = VADC_CALIB_RATIOMETRIC; else prop->calibration = VADC_CALIB_ABSOLUTE; @@ -731,16 +732,16 @@ static int vadc_get_dt_channel_data(struct device *dev, return 0; } -static int vadc_get_dt_data(struct vadc_priv *vadc, struct device_node *node) +static int vadc_get_fw_data(struct vadc_priv *vadc) { const struct vadc_channels *vadc_chan; struct iio_chan_spec *iio_chan; struct vadc_channel_prop prop; - struct device_node *child; + struct fwnode_handle *child; unsigned int index = 0; int ret; - vadc->nchannels = of_get_available_child_count(node); + vadc->nchannels = device_get_child_node_count(vadc->dev); if (!vadc->nchannels) return -EINVAL; @@ -756,10 +757,10 @@ static int vadc_get_dt_data(struct vadc_priv *vadc, struct device_node *node) iio_chan = vadc->iio_chans; - for_each_available_child_of_node(node, child) { - ret = vadc_get_dt_channel_data(vadc->dev, &prop, child); + device_for_each_child_node(vadc->dev, child) { + ret = vadc_get_fw_channel_data(vadc->dev, &prop, child); if (ret) { - of_node_put(child); + fwnode_handle_put(child); return ret; } @@ -848,7 +849,6 @@ static int vadc_check_revision(struct vadc_priv *vadc) static int vadc_probe(struct platform_device *pdev) { - struct device_node *node = pdev->dev.of_node; struct device *dev = &pdev->dev; struct iio_dev *indio_dev; struct vadc_priv *vadc; @@ -860,7 +860,7 @@ static int vadc_probe(struct platform_device *pdev) if (!regmap) return -ENODEV; - ret = of_property_read_u32(node, "reg", ®); + ret = device_property_read_u32(dev, "reg", ®); if (ret < 0) return ret; @@ -880,7 +880,7 @@ static int vadc_probe(struct platform_device *pdev) if (ret) return ret; - ret = vadc_get_dt_data(vadc, node); + ret = vadc_get_fw_data(vadc); if (ret) return ret; From 4f47a236a23d9f18d018a2f6639daad476d2a3f2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:29:00 +0200 Subject: [PATCH 043/142] iio: adc: qcom-spmi-adc5: convert to device properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the conversion to firmware agnostic device properties. As part of the conversion the IIO inkern interface 'of_xlate()' is also converted to 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF dependencies from IIO. Signed-off-by: Nuno Sá Acked-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-13-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/qcom-spmi-adc5.c | 63 +++++++++++++++----------------- 1 file changed, 30 insertions(+), 33 deletions(-) diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index 0dc4fe612433..e96da2ef1964 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -14,9 +14,9 @@ #include #include #include -#include -#include +#include #include +#include #include #include @@ -403,8 +403,8 @@ static irqreturn_t adc5_isr(int irq, void *dev_id) return IRQ_HANDLED; } -static int adc5_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int adc5_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { struct adc5_chip *adc = iio_priv(indio_dev); int i; @@ -416,8 +416,8 @@ static int adc5_of_xlate(struct iio_dev *indio_dev, return -EINVAL; } -static int adc7_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int adc7_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { struct adc5_chip *adc = iio_priv(indio_dev); int i, v_channel; @@ -481,12 +481,12 @@ static int adc7_read_raw(struct iio_dev *indio_dev, static const struct iio_info adc5_info = { .read_raw = adc5_read_raw, - .of_xlate = adc5_of_xlate, + .fwnode_xlate = adc5_fwnode_xlate, }; static const struct iio_info adc7_info = { .read_raw = adc7_read_raw, - .of_xlate = adc7_of_xlate, + .fwnode_xlate = adc7_fwnode_xlate, }; struct adc5_channels { @@ -619,18 +619,18 @@ static const struct adc5_channels adc5_chans_rev2[ADC5_MAX_CHANNEL] = { SCALE_HW_CALIB_THERM_100K_PULLUP) }; -static int adc5_get_dt_channel_data(struct adc5_chip *adc, +static int adc5_get_fw_channel_data(struct adc5_chip *adc, struct adc5_channel_prop *prop, - struct device_node *node, + struct fwnode_handle *fwnode, const struct adc5_data *data) { - const char *name = node->name, *channel_name; + const char *name = fwnode_get_name(fwnode), *channel_name; u32 chan, value, varr[2]; u32 sid = 0; int ret; struct device *dev = adc->dev; - ret = of_property_read_u32(node, "reg", &chan); + ret = fwnode_property_read_u32(fwnode, "reg", &chan); if (ret) { dev_err(dev, "invalid channel number %s\n", name); return ret; @@ -655,15 +655,13 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, prop->channel = chan; prop->sid = sid; - channel_name = of_get_property(node, - "label", NULL) ? : node->name; - if (!channel_name) { - dev_err(dev, "Invalid channel name\n"); - return -EINVAL; - } + ret = fwnode_property_read_string(fwnode, "label", &channel_name); + if (ret) + channel_name = name; + prop->datasheet_name = channel_name; - ret = of_property_read_u32(node, "qcom,decimation", &value); + ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &value); if (!ret) { ret = qcom_adc5_decimation_from_dt(value, data->decimation); if (ret < 0) { @@ -676,7 +674,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, prop->decimation = ADC5_DECIMATION_DEFAULT; } - ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2); + ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2); if (!ret) { ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]); if (ret < 0) { @@ -690,7 +688,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, adc->data->adc_chans[prop->channel].prescale_index; } - ret = of_property_read_u32(node, "qcom,hw-settle-time", &value); + ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value); if (!ret) { u8 dig_version[2]; @@ -721,7 +719,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME; } - ret = of_property_read_u32(node, "qcom,avg-samples", &value); + ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value); if (!ret) { ret = qcom_adc5_avg_samples_from_dt(value); if (ret < 0) { @@ -734,7 +732,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, prop->avg_samples = VADC_DEF_AVG_SAMPLES; } - if (of_property_read_bool(node, "qcom,ratiometric")) + if (fwnode_property_read_bool(fwnode, "qcom,ratiometric")) prop->cal_method = ADC5_RATIOMETRIC_CAL; else prop->cal_method = ADC5_ABSOLUTE_CAL; @@ -809,16 +807,16 @@ static const struct of_device_id adc5_match_table[] = { }; MODULE_DEVICE_TABLE(of, adc5_match_table); -static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node) +static int adc5_get_fw_data(struct adc5_chip *adc) { const struct adc5_channels *adc_chan; struct iio_chan_spec *iio_chan; struct adc5_channel_prop prop, *chan_props; - struct device_node *child; + struct fwnode_handle *child; unsigned int index = 0; int ret; - adc->nchannels = of_get_available_child_count(node); + adc->nchannels = device_get_child_node_count(adc->dev); if (!adc->nchannels) return -EINVAL; @@ -834,14 +832,14 @@ static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node) chan_props = adc->chan_props; iio_chan = adc->iio_chans; - adc->data = of_device_get_match_data(adc->dev); + adc->data = device_get_match_data(adc->dev); if (!adc->data) adc->data = &adc5_data_pmic; - for_each_available_child_of_node(node, child) { - ret = adc5_get_dt_channel_data(adc, &prop, child, adc->data); + device_for_each_child_node(adc->dev, child) { + ret = adc5_get_fw_channel_data(adc, &prop, child, adc->data); if (ret) { - of_node_put(child); + fwnode_handle_put(child); return ret; } @@ -866,7 +864,6 @@ static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node) static int adc5_probe(struct platform_device *pdev) { - struct device_node *node = pdev->dev.of_node; struct device *dev = &pdev->dev; struct iio_dev *indio_dev; struct adc5_chip *adc; @@ -878,7 +875,7 @@ static int adc5_probe(struct platform_device *pdev) if (!regmap) return -ENODEV; - ret = of_property_read_u32(node, "reg", ®); + ret = device_property_read_u32(dev, "reg", ®); if (ret < 0) return ret; @@ -894,7 +891,7 @@ static int adc5_probe(struct platform_device *pdev) init_completion(&adc->complete); mutex_init(&adc->lock); - ret = adc5_get_dt_data(adc, node); + ret = adc5_get_fw_data(adc); if (ret) { dev_err(dev, "adc get dt data failed\n"); return ret; From d7705f35448ada5a04f15326404e40d4254c538d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:29:01 +0200 Subject: [PATCH 044/142] iio: adc: stm32-adc: convert to device properties MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the conversion to firmware agnostic device properties. As part of the conversion the IIO inkern interface 'of_xlate()' is also converted to 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF dependencies from IIO. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Reviewed-by: Fabrice Gasnier Tested-by: Fabrice Gasnier Link: https://lore.kernel.org/r/20220715122903.332535-14-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-adc.c | 128 ++++++++++++++++++++---------------- 1 file changed, 73 insertions(+), 55 deletions(-) diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 130e8dd6f0c8..6256977eb7f7 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -21,11 +21,11 @@ #include #include #include +#include #include #include #include -#include -#include +#include #include "stm32-adc-core.h" @@ -241,6 +241,7 @@ struct stm32_adc_cfg { * @chan_name: channel name array * @num_diff: number of differential channels * @int_ch: internal channel indexes array + * @nsmps: number of channels with optional sample time */ struct stm32_adc { struct stm32_adc_common *common; @@ -267,6 +268,7 @@ struct stm32_adc { char chan_name[STM32_ADC_CH_MAX][STM32_ADC_CH_SZ]; u32 num_diff; int int_ch[STM32_ADC_INT_CH_NB]; + int nsmps; }; struct stm32_adc_diff_channel { @@ -1520,8 +1522,8 @@ static int stm32_adc_update_scan_mode(struct iio_dev *indio_dev, return ret; } -static int stm32_adc_of_xlate(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec) +static int stm32_adc_fwnode_xlate(struct iio_dev *indio_dev, + const struct fwnode_reference_args *iiospec) { int i; @@ -1575,7 +1577,7 @@ static const struct iio_info stm32_adc_iio_info = { .hwfifo_set_watermark = stm32_adc_set_watermark, .update_scan_mode = stm32_adc_update_scan_mode, .debugfs_reg_access = stm32_adc_debugfs_reg_access, - .of_xlate = stm32_adc_of_xlate, + .fwnode_xlate = stm32_adc_fwnode_xlate, }; static unsigned int stm32_adc_dma_residue(struct stm32_adc *adc) @@ -1772,14 +1774,14 @@ static const struct iio_chan_spec_ext_info stm32_adc_ext_info[] = { {}, }; -static int stm32_adc_of_get_resolution(struct iio_dev *indio_dev) +static int stm32_adc_fw_get_resolution(struct iio_dev *indio_dev) { - struct device_node *node = indio_dev->dev.of_node; + struct device *dev = &indio_dev->dev; struct stm32_adc *adc = iio_priv(indio_dev); unsigned int i; u32 res; - if (of_property_read_u32(node, "assigned-resolution-bits", &res)) + if (device_property_read_u32(dev, "assigned-resolution-bits", &res)) res = adc->cfg->adc_info->resolutions[0]; for (i = 0; i < adc->cfg->adc_info->num_res; i++) @@ -1863,11 +1865,11 @@ static void stm32_adc_chan_init_one(struct iio_dev *indio_dev, static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm32_adc *adc) { - struct device_node *node = indio_dev->dev.of_node; + struct device *dev = &indio_dev->dev; const struct stm32_adc_info *adc_info = adc->cfg->adc_info; int num_channels = 0, ret; - ret = of_property_count_u32_elems(node, "st,adc-channels"); + ret = device_property_count_u32(dev, "st,adc-channels"); if (ret > adc_info->max_channels) { dev_err(&indio_dev->dev, "Bad st,adc-channels?\n"); return -EINVAL; @@ -1875,8 +1877,15 @@ static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm num_channels += ret; } - ret = of_property_count_elems_of_size(node, "st,adc-diff-channels", - sizeof(struct stm32_adc_diff_channel)); + /* + * each st,adc-diff-channels is a group of 2 u32 so we divide @ret + * to get the *real* number of channels. + */ + ret = device_property_count_u32(dev, "st,adc-diff-channels"); + if (ret < 0) + return ret; + + ret /= (int)(sizeof(struct stm32_adc_diff_channel) / sizeof(u32)); if (ret > adc_info->max_channels) { dev_err(&indio_dev->dev, "Bad st,adc-diff-channels?\n"); return -EINVAL; @@ -1886,8 +1895,8 @@ static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm } /* Optional sample time is provided either for each, or all channels */ - ret = of_property_count_u32_elems(node, "st,min-sample-time-nsecs"); - if (ret > 1 && ret != num_channels) { + adc->nsmps = device_property_count_u32(dev, "st,min-sample-time-nsecs"); + if (adc->nsmps > 1 && adc->nsmps != num_channels) { dev_err(&indio_dev->dev, "Invalid st,min-sample-time-nsecs\n"); return -EINVAL; } @@ -1897,21 +1906,20 @@ static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm static int stm32_adc_legacy_chan_init(struct iio_dev *indio_dev, struct stm32_adc *adc, - struct iio_chan_spec *channels) + struct iio_chan_spec *channels, + int nchans) { - struct device_node *node = indio_dev->dev.of_node; const struct stm32_adc_info *adc_info = adc->cfg->adc_info; struct stm32_adc_diff_channel diff[STM32_ADC_CH_MAX]; + struct device *dev = &indio_dev->dev; u32 num_diff = adc->num_diff; int size = num_diff * sizeof(*diff) / sizeof(u32); - int scan_index = 0, val, ret, i; - struct property *prop; - const __be32 *cur; - u32 smp = 0; + int scan_index = 0, ret, i, c; + u32 smp = 0, smps[STM32_ADC_CH_MAX], chans[STM32_ADC_CH_MAX]; if (num_diff) { - ret = of_property_read_u32_array(node, "st,adc-diff-channels", - (u32 *)diff, size); + ret = device_property_read_u32_array(dev, "st,adc-diff-channels", + (u32 *)diff, size); if (ret) { dev_err(&indio_dev->dev, "Failed to get diff channels %d\n", ret); return ret; @@ -1932,32 +1940,47 @@ static int stm32_adc_legacy_chan_init(struct iio_dev *indio_dev, } } - of_property_for_each_u32(node, "st,adc-channels", prop, cur, val) { - if (val >= adc_info->max_channels) { - dev_err(&indio_dev->dev, "Invalid channel %d\n", val); + ret = device_property_read_u32_array(dev, "st,adc-channels", chans, + nchans); + if (ret) + return ret; + + for (c = 0; c < nchans; c++) { + if (chans[c] >= adc_info->max_channels) { + dev_err(&indio_dev->dev, "Invalid channel %d\n", + chans[c]); return -EINVAL; } /* Channel can't be configured both as single-ended & diff */ for (i = 0; i < num_diff; i++) { - if (val == diff[i].vinp) { - dev_err(&indio_dev->dev, "channel %d misconfigured\n", val); + if (chans[c] == diff[i].vinp) { + dev_err(&indio_dev->dev, "channel %d misconfigured\n", chans[c]); return -EINVAL; } } - stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val, - 0, scan_index, false); + stm32_adc_chan_init_one(indio_dev, &channels[scan_index], + chans[c], 0, scan_index, false); scan_index++; } + if (adc->nsmps > 0) { + ret = device_property_read_u32_array(dev, "st,min-sample-time-nsecs", + smps, adc->nsmps); + if (ret) + return ret; + } + for (i = 0; i < scan_index; i++) { /* - * Using of_property_read_u32_index(), smp value will only be - * modified if valid u32 value can be decoded. This allows to - * get either no value, 1 shared value for all indexes, or one - * value per channel. + * This check is used with the above logic so that smp value + * will only be modified if valid u32 value can be decoded. This + * allows to get either no value, 1 shared value for all indexes, + * or one value per channel. The point is to have the same + * behavior as 'of_property_read_u32_index()'. */ - of_property_read_u32_index(node, "st,min-sample-time-nsecs", i, &smp); + if (i < adc->nsmps) + smp = smps[i]; /* Prepare sampling time settings */ stm32_adc_smpr_init(adc, channels[i].channel, smp); @@ -2005,22 +2028,21 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev, struct stm32_adc *adc, struct iio_chan_spec *channels) { - struct device_node *node = indio_dev->dev.of_node; const struct stm32_adc_info *adc_info = adc->cfg->adc_info; - struct device_node *child; + struct fwnode_handle *child; const char *name; int val, scan_index = 0, ret; bool differential; u32 vin[2]; - for_each_available_child_of_node(node, child) { - ret = of_property_read_u32(child, "reg", &val); + device_for_each_child_node(&indio_dev->dev, child) { + ret = fwnode_property_read_u32(child, "reg", &val); if (ret) { dev_err(&indio_dev->dev, "Missing channel index %d\n", ret); goto err; } - ret = of_property_read_string(child, "label", &name); + ret = fwnode_property_read_string(child, "label", &name); /* label is optional */ if (!ret) { if (strlen(name) >= STM32_ADC_CH_SZ) { @@ -2047,7 +2069,7 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev, } differential = false; - ret = of_property_read_u32_array(child, "diff-channels", vin, 2); + ret = fwnode_property_read_u32_array(child, "diff-channels", vin, 2); /* diff-channels is optional */ if (!ret) { differential = true; @@ -2064,7 +2086,7 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev, stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val, vin[1], scan_index, differential); - ret = of_property_read_u32(child, "st,min-sample-time-ns", &val); + ret = fwnode_property_read_u32(child, "st,min-sample-time-ns", &val); /* st,min-sample-time-ns is optional */ if (!ret) { stm32_adc_smpr_init(adc, channels[scan_index].channel, val); @@ -2082,14 +2104,13 @@ static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev, return scan_index; err: - of_node_put(child); + fwnode_handle_put(child); return ret; } -static int stm32_adc_chan_of_init(struct iio_dev *indio_dev, bool timestamping) +static int stm32_adc_chan_fw_init(struct iio_dev *indio_dev, bool timestamping) { - struct device_node *node = indio_dev->dev.of_node; struct stm32_adc *adc = iio_priv(indio_dev); const struct stm32_adc_info *adc_info = adc->cfg->adc_info; struct iio_chan_spec *channels; @@ -2099,7 +2120,7 @@ static int stm32_adc_chan_of_init(struct iio_dev *indio_dev, bool timestamping) for (i = 0; i < STM32_ADC_INT_CH_NB; i++) adc->int_ch[i] = STM32_ADC_INT_CH_NONE; - num_channels = of_get_available_child_count(node); + num_channels = device_get_child_node_count(&indio_dev->dev); /* If no channels have been found, fallback to channels legacy properties. */ if (!num_channels) { legacy = true; @@ -2130,7 +2151,8 @@ static int stm32_adc_chan_of_init(struct iio_dev *indio_dev, bool timestamping) return -ENOMEM; if (legacy) - ret = stm32_adc_legacy_chan_init(indio_dev, adc, channels); + ret = stm32_adc_legacy_chan_init(indio_dev, adc, channels, + num_channels); else ret = stm32_adc_generic_chan_init(indio_dev, adc, channels); if (ret < 0) @@ -2212,9 +2234,6 @@ static int stm32_adc_probe(struct platform_device *pdev) bool timestamping = false; int ret; - if (!pdev->dev.of_node) - return -ENODEV; - indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc)); if (!indio_dev) return -ENOMEM; @@ -2223,17 +2242,16 @@ static int stm32_adc_probe(struct platform_device *pdev) adc->common = dev_get_drvdata(pdev->dev.parent); spin_lock_init(&adc->lock); init_completion(&adc->completion); - adc->cfg = (const struct stm32_adc_cfg *) - of_match_device(dev->driver->of_match_table, dev)->data; + adc->cfg = device_get_match_data(dev); indio_dev->name = dev_name(&pdev->dev); - indio_dev->dev.of_node = pdev->dev.of_node; + device_set_node(&indio_dev->dev, dev_fwnode(&pdev->dev)); indio_dev->info = &stm32_adc_iio_info; indio_dev->modes = INDIO_DIRECT_MODE | INDIO_HARDWARE_TRIGGERED; platform_set_drvdata(pdev, indio_dev); - ret = of_property_read_u32(pdev->dev.of_node, "reg", &adc->offset); + ret = device_property_read_u32(dev, "reg", &adc->offset); if (ret != 0) { dev_err(&pdev->dev, "missing reg property\n"); return -EINVAL; @@ -2262,7 +2280,7 @@ static int stm32_adc_probe(struct platform_device *pdev) } } - ret = stm32_adc_of_get_resolution(indio_dev); + ret = stm32_adc_fw_get_resolution(indio_dev); if (ret < 0) return ret; @@ -2279,7 +2297,7 @@ static int stm32_adc_probe(struct platform_device *pdev) timestamping = true; } - ret = stm32_adc_chan_of_init(indio_dev, timestamping); + ret = stm32_adc_chan_fw_init(indio_dev, timestamping); if (ret < 0) goto err_dma_disable; From b22bc4d6072e74b768c4c19e2ff3585ba5927904 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:29:02 +0200 Subject: [PATCH 045/142] iio: inkern: remove OF dependencies MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since all users of the OF dependendent API are now converted to use the firmware agnostic alternative, we can drop OF dependencies from the IIO in kernel interface. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-15-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 25 +------------------------ include/linux/iio/consumer.h | 10 ---------- include/linux/iio/iio.h | 3 --- 3 files changed, 1 insertion(+), 37 deletions(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 9cfa66ef9536..b667790b6df9 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -8,7 +8,6 @@ #include #include #include -#include #include #include @@ -143,26 +142,6 @@ static int __fwnode_iio_simple_xlate(struct iio_dev *indio_dev, return iiospec->args[0]; } -/* - * Simple helper to copy fwnode_reference_args into of_phandle_args so we - * can pass it to of_xlate(). Ultimate goal is to drop this together with - * of_xlate(). - */ -static int __fwnode_to_of_xlate(struct iio_dev *indio_dev, - const struct fwnode_reference_args *iiospec) -{ - struct of_phandle_args of_args; - unsigned int i; - - of_args.args_count = iiospec->nargs; - of_args.np = to_of_node(iiospec->fwnode); - - for (i = 0; i < MAX_PHANDLE_ARGS; i++) - of_args.args[i] = i < iiospec->nargs ? iiospec->args[i] : 0; - - return indio_dev->info->of_xlate(indio_dev, &of_args); -} - static int __fwnode_iio_channel_get(struct iio_channel *channel, struct fwnode_handle *fwnode, int index) { @@ -185,9 +164,7 @@ static int __fwnode_iio_channel_get(struct iio_channel *channel, indio_dev = dev_to_iio_dev(idev); channel->indio_dev = indio_dev; - if (indio_dev->info->of_xlate) - index = __fwnode_to_of_xlate(indio_dev, &iiospec); - else if (indio_dev->info->fwnode_xlate) + if (indio_dev->info->fwnode_xlate) index = indio_dev->info->fwnode_xlate(indio_dev, &iiospec); else index = __fwnode_iio_simple_xlate(indio_dev, &iiospec); diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 2adb1306da3e..6802596b017c 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -7,14 +7,12 @@ #ifndef _IIO_INKERN_CONSUMER_H_ #define _IIO_INKERN_CONSUMER_H_ -#include #include #include struct iio_dev; struct iio_chan_spec; struct device; -struct device_node; struct fwnode_handle; /** @@ -129,14 +127,6 @@ struct iio_channel *devm_fwnode_iio_channel_get_by_name(struct device *dev, struct fwnode_handle *fwnode, const char *consumer_channel); -static inline struct iio_channel -*devm_of_iio_channel_get_by_name(struct device *dev, struct device_node *np, - const char *consumer_channel) -{ - return devm_fwnode_iio_channel_get_by_name(dev, of_fwnode_handle(np), - consumer_channel); -} - struct iio_cb_buffer; /** * iio_channel_get_all_cb() - register callback for triggered capture diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 6002f8a0baf1..f0ec8a5e5a7a 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -17,7 +17,6 @@ * Currently assumes nano seconds. */ -struct of_phandle_args; struct fwnode_reference_args; enum iio_shared_by { @@ -511,8 +510,6 @@ struct iio_info { int (*debugfs_reg_access)(struct iio_dev *indio_dev, unsigned reg, unsigned writeval, unsigned *readval); - int (*of_xlate)(struct iio_dev *indio_dev, - const struct of_phandle_args *iiospec); int (*fwnode_xlate)(struct iio_dev *indio_dev, const struct fwnode_reference_args *iiospec); int (*hwfifo_set_watermark)(struct iio_dev *indio_dev, unsigned val); From 110f11589c877732d8167d4d4ee739a4566785e2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= Date: Fri, 15 Jul 2022 14:29:03 +0200 Subject: [PATCH 046/142] iio: inkern: fix coding style warnings MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Just cosmetics. No functional change intended... Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-16-nuno.sa@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 64 ++++++++++++++++++++++---------------------- 1 file changed, 32 insertions(+), 32 deletions(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index b667790b6df9..872fd5c24147 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -45,13 +45,13 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps) int i = 0, ret = 0; struct iio_map_internal *mapi; - if (maps == NULL) + if (!maps) return 0; mutex_lock(&iio_map_list_lock); - while (maps[i].consumer_dev_name != NULL) { + while (maps[i].consumer_dev_name) { mapi = kzalloc(sizeof(*mapi), GFP_KERNEL); - if (mapi == NULL) { + if (!mapi) { ret = -ENOMEM; goto error_ret; } @@ -69,7 +69,6 @@ error_ret: } EXPORT_SYMBOL_GPL(iio_map_array_register); - /* * Remove all map entries associated with the given iio device */ @@ -157,7 +156,7 @@ static int __fwnode_iio_channel_get(struct iio_channel *channel, return err; idev = bus_find_device_by_fwnode(&iio_bus_type, iiospec.fwnode); - if (idev == NULL) { + if (!idev) { fwnode_handle_put(iiospec.fwnode); return -EPROBE_DEFER; } @@ -190,7 +189,7 @@ static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode, return ERR_PTR(-EINVAL); channel = kzalloc(sizeof(*channel), GFP_KERNEL); - if (channel == NULL) + if (!channel) return ERR_PTR(-ENOMEM); err = __fwnode_iio_channel_get(channel, fwnode, index); @@ -308,7 +307,7 @@ static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev) /* NULL terminated array to save passing size */ chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL); - if (chans == NULL) + if (!chans) return ERR_PTR(-ENOMEM); /* Search for FW matches */ @@ -333,7 +332,7 @@ static struct iio_channel *iio_channel_get_sys(const char *name, struct iio_channel *channel; int err; - if (name == NULL && channel_name == NULL) + if (!(name || channel_name)) return ERR_PTR(-ENODEV); /* first find matching entry the channel map */ @@ -348,11 +347,11 @@ static struct iio_channel *iio_channel_get_sys(const char *name, break; } mutex_unlock(&iio_map_list_lock); - if (c == NULL) + if (!c) return ERR_PTR(-ENODEV); channel = kzalloc(sizeof(*channel), GFP_KERNEL); - if (channel == NULL) { + if (!channel) { err = -ENOMEM; goto error_no_mem; } @@ -364,7 +363,7 @@ static struct iio_channel *iio_channel_get_sys(const char *name, iio_chan_spec_from_name(channel->indio_dev, c->map->adc_channel_label); - if (channel->channel == NULL) { + if (!channel->channel) { err = -EINVAL; goto error_no_chan; } @@ -456,7 +455,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev) int mapind = 0; int i, ret; - if (dev == NULL) + if (!dev) return ERR_PTR(-EINVAL); chans = fwnode_iio_channel_get_all(dev); @@ -484,7 +483,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev) /* NULL terminated array to save passing size */ chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL); - if (chans == NULL) { + if (!chans) { ret = -ENOMEM; goto error_ret; } @@ -498,7 +497,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev) chans[mapind].channel = iio_chan_spec_from_name(chans[mapind].indio_dev, c->map->adc_channel_label); - if (chans[mapind].channel == NULL) { + if (!chans[mapind].channel) { ret = -EINVAL; goto error_free_chans; } @@ -560,14 +559,14 @@ struct iio_channel *devm_iio_channel_get_all(struct device *dev) EXPORT_SYMBOL_GPL(devm_iio_channel_get_all); static int iio_channel_read(struct iio_channel *chan, int *val, int *val2, - enum iio_chan_info_enum info) + enum iio_chan_info_enum info) { int unused; int vals[INDIO_MAX_RAW_ELEMENTS]; int ret; int val_len = 2; - if (val2 == NULL) + if (!val2) val2 = &unused; if (!iio_channel_has_info(chan->channel, info)) @@ -579,9 +578,10 @@ static int iio_channel_read(struct iio_channel *chan, int *val, int *val2, vals, &val_len, info); *val = vals[0]; *val2 = vals[1]; - } else + } else { ret = chan->indio_dev->info->read_raw(chan->indio_dev, chan->channel, val, val2, info); + } return ret; } @@ -592,7 +592,7 @@ int iio_read_channel_raw(struct iio_channel *chan, int *val) int ret; mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } @@ -611,7 +611,7 @@ int iio_read_channel_average_raw(struct iio_channel *chan, int *val) int ret; mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } @@ -625,7 +625,8 @@ err_unlock: EXPORT_SYMBOL_GPL(iio_read_channel_average_raw); static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan, - int raw, int *processed, unsigned int scale) + int raw, int *processed, + unsigned int scale) { int scale_type, scale_val, scale_val2; int offset_type, offset_val, offset_val2; @@ -658,7 +659,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan, } scale_type = iio_channel_read(chan, &scale_val, &scale_val2, - IIO_CHAN_INFO_SCALE); + IIO_CHAN_INFO_SCALE); if (scale_type < 0) { /* * If no channel scaling is available apply consumer scale to @@ -703,19 +704,19 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan, } int iio_convert_raw_to_processed(struct iio_channel *chan, int raw, - int *processed, unsigned int scale) + int *processed, unsigned int scale) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev); int ret; mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } ret = iio_convert_raw_to_processed_unlocked(chan, raw, processed, - scale); + scale); err_unlock: mutex_unlock(&iio_dev_opaque->info_exist_lock); @@ -730,7 +731,7 @@ int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2, int ret; mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } @@ -756,7 +757,7 @@ int iio_read_channel_processed_scale(struct iio_channel *chan, int *val, int ret; mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } @@ -834,7 +835,7 @@ int iio_read_avail_channel_raw(struct iio_channel *chan, int type; ret = iio_read_avail_channel_attribute(chan, vals, &type, length, - IIO_CHAN_INFO_RAW); + IIO_CHAN_INFO_RAW); if (ret >= 0 && type != IIO_VAL_INT) /* raw values are assumed to be IIO_VAL_INT */ @@ -918,7 +919,7 @@ int iio_get_channel_type(struct iio_channel *chan, enum iio_chan_type *type) /* Need to verify underlying driver has not gone away */ mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } @@ -945,7 +946,7 @@ int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2, int ret; mutex_lock(&iio_dev_opaque->info_exist_lock); - if (chan->indio_dev->info == NULL) { + if (!chan->indio_dev->info) { ret = -ENODEV; goto err_unlock; } @@ -979,9 +980,8 @@ unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan) } EXPORT_SYMBOL_GPL(iio_get_channel_ext_info_count); -static const struct iio_chan_spec_ext_info *iio_lookup_ext_info( - const struct iio_channel *chan, - const char *attr) +static const struct iio_chan_spec_ext_info * +iio_lookup_ext_info(const struct iio_channel *chan, const char *attr) { const struct iio_chan_spec_ext_info *ext_info; From 1efc41035f1841acf0af2bab153158e27ce94f10 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:23 +0100 Subject: [PATCH 047/142] iio: ABI: Fix wrong format of differential capacitance channel ABI. in_ only occurs once in these attributes. Fixes: 0baf29d658c7 ("staging:iio:documentation Add abi docs for capacitance adcs.") Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-3-jic23@kernel.org --- Documentation/ABI/testing/sysfs-bus-iio | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 7faec5b3a553..979f2e2b44f6 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -196,7 +196,7 @@ Description: Raw capacitance measurement from channel Y. Units after application of scale and offset are nanofarads. -What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw +What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw KernelVersion: 3.2 Contact: linux-iio@vger.kernel.org Description: From ebf30bed140d1da42331ce2e90125fb5e3cc5191 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:24 +0100 Subject: [PATCH 048/142] staging: iio: cdc: ad7746: Use explicit be24 handling. Chance from fiddly local implementation of be24 to cpu endian conversion by reading into a 3 byte buffer and using get_unaligned_be24() Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-4-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 52b8957c19c9..08f73be5797a 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -15,6 +15,8 @@ #include #include +#include + #include #include @@ -95,10 +97,7 @@ struct ad7746_chip_info { u8 capdac[2][2]; s8 capdac_set; - union { - __be32 d32; - u8 d8[4]; - } data ____cacheline_aligned; + u8 data[3] ____cacheline_aligned; }; enum ad7746_chan { @@ -546,13 +545,14 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, /* Now read the actual register */ ret = i2c_smbus_read_i2c_block_data(chip->client, - chan->address >> 8, 3, - &chip->data.d8[1]); + chan->address >> 8, + sizeof(chip->data), + chip->data); if (ret < 0) goto out; - *val = (be32_to_cpu(chip->data.d32) & 0xFFFFFF) - 0x800000; + *val = get_unaligned_be24(chip->data) - 0x800000; switch (chan->type) { case IIO_TEMP: From 104827ec920d73db1c0176536f02ba5272c4b8fb Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:25 +0100 Subject: [PATCH 049/142] staging: iio: cdc: ad7746: Push handling of supply voltage scale to userspace. The supply voltage is attenuated by 6 before being fed to the ADC. Handle this explicitly rather than pre-multiplying the _raw value by 6. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-5-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 08f73be5797a..0b5cb788abee 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -116,9 +116,8 @@ static const struct iio_chan_spec ad7746_channels[] = { .type = IIO_VOLTAGE, .indexed = 1, .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | - BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = AD7746_REG_VT_DATA_HIGH << 8 | AD7746_VTSETUP_VTMD_EXT_VIN, }, @@ -127,9 +126,8 @@ static const struct iio_chan_spec ad7746_channels[] = { .indexed = 1, .channel = 1, .extend_name = "supply", - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | - BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = AD7746_REG_VT_DATA_HIGH << 8 | AD7746_VTSETUP_VTMD_VDD_MON, }, @@ -562,10 +560,6 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, */ *val = (*val * 125) / 256; break; - case IIO_VOLTAGE: - if (chan->channel == 1) /* supply_raw*/ - *val = *val * 6; - break; default: break; } @@ -620,6 +614,8 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, case IIO_VOLTAGE: /* 1170mV / 2^23 */ *val = 1170; + if (chan->channel == 1) + *val *= 6; *val2 = 23; ret = IIO_VAL_FRACTIONAL_LOG2; break; From 77fdc4cead204f2b3e2e1e365f70528199298737 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:26 +0100 Subject: [PATCH 050/142] staging: iio: cdc: ad7746: Use local buffer for multi byte reads. I2C does not require DMA safe buffers so there is no need to ensure the buffers are in their own cacheline. Hence simplify things by using a local variable instead of embedding the buffer in the chip info structure. Includes a trivial whitespace cleanup to drop a line between function and error handling. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-6-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 0b5cb788abee..496e90f559c7 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -96,8 +96,6 @@ struct ad7746_chip_info { u8 vt_setup; u8 capdac[2][2]; s8 capdac_set; - - u8 data[3] ____cacheline_aligned; }; enum ad7746_chan { @@ -522,6 +520,7 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, struct ad7746_chip_info *chip = iio_priv(indio_dev); int ret, delay, idx; u8 regval, reg; + u8 data[3]; mutex_lock(&chip->lock); @@ -544,13 +543,11 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, ret = i2c_smbus_read_i2c_block_data(chip->client, chan->address >> 8, - sizeof(chip->data), - chip->data); - + sizeof(data), data); if (ret < 0) goto out; - *val = get_unaligned_be24(chip->data) - 0x800000; + *val = get_unaligned_be24(data) - 0x800000; switch (chan->type) { case IIO_TEMP: From 5d54564e47435a5c1c1afa63c1d64908609cd545 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:27 +0100 Subject: [PATCH 051/142] staging: iio: cdc: ad7746: Factor out ad7746_read_channel() Reduce deep indenting and simplify the locking cleanup that follows. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-7-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 80 ++++++++++++++++++-------------- 1 file changed, 46 insertions(+), 34 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 496e90f559c7..8052ac2696d3 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -512,54 +512,66 @@ out: return ret; } +static int ad7746_read_channel(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val) +{ + struct ad7746_chip_info *chip = iio_priv(indio_dev); + int ret, delay; + u8 data[3]; + u8 regval; + + ret = ad7746_select_channel(indio_dev, chan); + if (ret < 0) + return ret; + delay = ret; + + regval = chip->config | AD7746_CONF_MODE_SINGLE_CONV; + ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval); + if (ret < 0) + return ret; + + msleep(delay); + /* Now read the actual register */ + ret = i2c_smbus_read_i2c_block_data(chip->client, chan->address >> 8, + sizeof(data), data); + if (ret < 0) + return ret; + + *val = get_unaligned_be24(data) - 0x800000; + + switch (chan->type) { + case IIO_TEMP: + /* + * temperature in milli degrees Celsius + * T = ((*val / 2048) - 4096) * 1000 + */ + *val = (*val * 125) / 256; + break; + default: + break; + } + + return 0; +} + static int ad7746_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { struct ad7746_chip_info *chip = iio_priv(indio_dev); - int ret, delay, idx; - u8 regval, reg; - u8 data[3]; + int ret, idx; + u8 reg; mutex_lock(&chip->lock); switch (mask) { case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_PROCESSED: - ret = ad7746_select_channel(indio_dev, chan); + ret = ad7746_read_channel(indio_dev, chan, val); if (ret < 0) goto out; - delay = ret; - - regval = chip->config | AD7746_CONF_MODE_SINGLE_CONV; - ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, - regval); - if (ret < 0) - goto out; - - msleep(delay); - /* Now read the actual register */ - - ret = i2c_smbus_read_i2c_block_data(chip->client, - chan->address >> 8, - sizeof(data), data); - if (ret < 0) - goto out; - - *val = get_unaligned_be24(data) - 0x800000; - - switch (chan->type) { - case IIO_TEMP: - /* - * temperature in milli degrees Celsius - * T = ((*val / 2048) - 4096) * 1000 - */ - *val = (*val * 125) / 256; - break; - default: - break; - } ret = IIO_VAL_INT; break; From b1f567bde7e12e7671d8b0015ad3cbff8f3a8d3b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:28 +0100 Subject: [PATCH 052/142] staging: iio: cdc: ad7764: Push locking down into case statements in read/write_raw Not all paths require any locking at all. So to simplify the removal of such locking push the locks down into the individual case statements. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-8-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 127 +++++++++++++------------------ 1 file changed, 54 insertions(+), 73 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 8052ac2696d3..bc03760e44e0 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -420,14 +420,10 @@ static int ad7746_write_raw(struct iio_dev *indio_dev, struct ad7746_chip_info *chip = iio_priv(indio_dev); int ret, reg; - mutex_lock(&chip->lock); - switch (mask) { case IIO_CHAN_INFO_CALIBSCALE: - if (val != 1) { - ret = -EINVAL; - goto out; - } + if (val != 1) + return -EINVAL; val = (val2 * 1024) / 15625; @@ -439,33 +435,31 @@ static int ad7746_write_raw(struct iio_dev *indio_dev, reg = AD7746_REG_VOLT_GAINH; break; default: - ret = -EINVAL; - goto out; + return -EINVAL; } + mutex_lock(&chip->lock); ret = i2c_smbus_write_word_swapped(chip->client, reg, val); + mutex_unlock(&chip->lock); if (ret < 0) - goto out; + return ret; - ret = 0; - break; + return 0; case IIO_CHAN_INFO_CALIBBIAS: - if (val < 0 || val > 0xFFFF) { - ret = -EINVAL; - goto out; - } + if (val < 0 || val > 0xFFFF) + return -EINVAL; + + mutex_lock(&chip->lock); ret = i2c_smbus_write_word_swapped(chip->client, AD7746_REG_CAP_OFFH, val); + mutex_unlock(&chip->lock); if (ret < 0) - goto out; + return ret; - ret = 0; - break; + return 0; case IIO_CHAN_INFO_OFFSET: - if (val < 0 || val > 43008000) { /* 21pF */ - ret = -EINVAL; - goto out; - } + if (val < 0 || val > 43008000) /* 21pF */ + return -EINVAL; /* * CAPDAC Scale = 21pF_typ / 127 @@ -474,42 +468,41 @@ static int ad7746_write_raw(struct iio_dev *indio_dev, */ val /= 338646; - + mutex_lock(&chip->lock); chip->capdac[chan->channel][chan->differential] = val > 0 ? AD7746_CAPDAC_DACP(val) | AD7746_CAPDAC_DACEN : 0; ret = ad7746_set_capdac(chip, chan->channel); - if (ret < 0) - goto out; + if (ret < 0) { + mutex_unlock(&chip->lock); + return ret; + } chip->capdac_set = chan->channel; + mutex_unlock(&chip->lock); - ret = 0; - break; + return 0; case IIO_CHAN_INFO_SAMP_FREQ: - if (val2) { - ret = -EINVAL; - goto out; - } + if (val2) + return -EINVAL; switch (chan->type) { case IIO_CAPACITANCE: + mutex_lock(&chip->lock); ret = ad7746_store_cap_filter_rate_setup(chip, val); - break; + mutex_unlock(&chip->lock); + return ret; case IIO_VOLTAGE: + mutex_lock(&chip->lock); ret = ad7746_store_vt_filter_rate_setup(chip, val); - break; + mutex_unlock(&chip->lock); + return ret; default: - ret = -EINVAL; + return -EINVAL; } - break; default: - ret = -EINVAL; + return -EINVAL; } - -out: - mutex_unlock(&chip->lock); - return ret; } static int ad7746_read_channel(struct iio_dev *indio_dev, @@ -564,17 +557,16 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, int ret, idx; u8 reg; - mutex_lock(&chip->lock); - switch (mask) { case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_PROCESSED: + mutex_lock(&chip->lock); ret = ad7746_read_channel(indio_dev, chan, val); + mutex_unlock(&chip->lock); if (ret < 0) - goto out; + return ret; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_CHAN_INFO_CALIBSCALE: switch (chan->type) { case IIO_CAPACITANCE: @@ -584,80 +576,69 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, reg = AD7746_REG_VOLT_GAINH; break; default: - ret = -EINVAL; - goto out; + return -EINVAL; } + mutex_lock(&chip->lock); ret = i2c_smbus_read_word_swapped(chip->client, reg); + mutex_unlock(&chip->lock); if (ret < 0) - goto out; + return ret; /* 1 + gain_val / 2^16 */ *val = 1; *val2 = (15625 * ret) / 1024; - ret = IIO_VAL_INT_PLUS_MICRO; - break; + return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_CALIBBIAS: + mutex_lock(&chip->lock); ret = i2c_smbus_read_word_swapped(chip->client, AD7746_REG_CAP_OFFH); + mutex_unlock(&chip->lock); if (ret < 0) - goto out; + return ret; *val = ret; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_CHAN_INFO_OFFSET: *val = AD7746_CAPDAC_DACP(chip->capdac[chan->channel] [chan->differential]) * 338646; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: switch (chan->type) { case IIO_CAPACITANCE: /* 8.192pf / 2^24 */ *val = 0; *val2 = 488; - ret = IIO_VAL_INT_PLUS_NANO; - break; + return IIO_VAL_INT_PLUS_NANO; case IIO_VOLTAGE: /* 1170mV / 2^23 */ *val = 1170; if (chan->channel == 1) *val *= 6; *val2 = 23; - ret = IIO_VAL_FRACTIONAL_LOG2; - break; + return IIO_VAL_FRACTIONAL_LOG2; default: - ret = -EINVAL; - break; + return -EINVAL; } - - break; case IIO_CHAN_INFO_SAMP_FREQ: switch (chan->type) { case IIO_CAPACITANCE: idx = (chip->config & AD7746_CONF_CAPFS_MASK) >> AD7746_CONF_CAPFS_SHIFT; *val = ad7746_cap_filter_rate_table[idx][0]; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_VOLTAGE: idx = (chip->config & AD7746_CONF_VTFS_MASK) >> AD7746_CONF_VTFS_SHIFT; *val = ad7746_vt_filter_rate_table[idx][0]; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; default: - ret = -EINVAL; + return -EINVAL; } - break; default: - ret = -EINVAL; + return -EINVAL; } -out: - mutex_unlock(&chip->lock); - return ret; } static const struct iio_info ad7746_info = { From 9eee2fc4a670d70ded6cc88c42d760338ce96918 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:29 +0100 Subject: [PATCH 053/142] staging: iio: cdc: ad7746: Break up use of chan->address and use FIELD_PREP etc Instead of encoding several different fields into chan->address use an indirection to a separate per channel structure where the various fields can be expressed in a more readable form. This also allows the register values to be constructed at runtime using FIELD_PREP(). Drop the now redundant _SHIFT macros. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-9-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 152 ++++++++++++++++++++----------- 1 file changed, 99 insertions(+), 53 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index bc03760e44e0..3e4448f3f3dd 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -5,6 +5,7 @@ * Copyright 2011 Analog Devices Inc. */ +#include #include #include #include @@ -50,11 +51,12 @@ #define AD7746_CAPSETUP_CACHOP BIT(0) /* Voltage/Temperature Setup Register Bit Designations (AD7746_REG_VT_SETUP) */ -#define AD7746_VTSETUP_VTEN (1 << 7) -#define AD7746_VTSETUP_VTMD_INT_TEMP (0 << 5) -#define AD7746_VTSETUP_VTMD_EXT_TEMP (1 << 5) -#define AD7746_VTSETUP_VTMD_VDD_MON (2 << 5) -#define AD7746_VTSETUP_VTMD_EXT_VIN (3 << 5) +#define AD7746_VTSETUP_VTEN BIT(7) +#define AD7746_VTSETUP_VTMD_MASK GENMASK(6, 5) +#define AD7746_VTSETUP_VTMD_INT_TEMP 0 +#define AD7746_VTSETUP_VTMD_EXT_TEMP 1 +#define AD7746_VTSETUP_VTMD_VDD_MON 2 +#define AD7746_VTSETUP_VTMD_EXT_VIN 3 #define AD7746_VTSETUP_EXTREF BIT(4) #define AD7746_VTSETUP_VTSHORT BIT(1) #define AD7746_VTSETUP_VTCHOP BIT(0) @@ -66,23 +68,22 @@ #define AD7746_EXCSETUP_NEXCB BIT(4) #define AD7746_EXCSETUP_EXCA BIT(3) #define AD7746_EXCSETUP_NEXCA BIT(2) -#define AD7746_EXCSETUP_EXCLVL(x) (((x) & 0x3) << 0) +#define AD7746_EXCSETUP_EXCLVL_MASK GENMASK(1, 0) /* Config Register Bit Designations (AD7746_REG_CFG) */ -#define AD7746_CONF_VTFS_SHIFT 6 -#define AD7746_CONF_CAPFS_SHIFT 3 #define AD7746_CONF_VTFS_MASK GENMASK(7, 6) #define AD7746_CONF_CAPFS_MASK GENMASK(5, 3) -#define AD7746_CONF_MODE_IDLE (0 << 0) -#define AD7746_CONF_MODE_CONT_CONV (1 << 0) -#define AD7746_CONF_MODE_SINGLE_CONV (2 << 0) -#define AD7746_CONF_MODE_PWRDN (3 << 0) -#define AD7746_CONF_MODE_OFFS_CAL (5 << 0) -#define AD7746_CONF_MODE_GAIN_CAL (6 << 0) +#define AD7746_CONF_MODE_MASK GENMASK(2, 0) +#define AD7746_CONF_MODE_IDLE 0 +#define AD7746_CONF_MODE_CONT_CONV 1 +#define AD7746_CONF_MODE_SINGLE_CONV 2 +#define AD7746_CONF_MODE_PWRDN 3 +#define AD7746_CONF_MODE_OFFS_CAL 5 +#define AD7746_CONF_MODE_GAIN_CAL 6 /* CAPDAC Register Bit Designations (AD7746_REG_CAPDACx) */ #define AD7746_CAPDAC_DACEN BIT(7) -#define AD7746_CAPDAC_DACP(x) ((x) & 0x7F) +#define AD7746_CAPDAC_DACP_MASK GENMASK(6, 0) struct ad7746_chip_info { struct i2c_client *client; @@ -109,6 +110,52 @@ enum ad7746_chan { CIN2_DIFF, }; +struct ad7746_chan_info { + u8 addr; + union { + u8 vtmd; + struct { /* CAP SETUP fields */ + unsigned int cin2 : 1; + unsigned int capdiff : 1; + }; + }; +}; + +static const struct ad7746_chan_info ad7746_chan_info[] = { + [VIN] = { + .addr = AD7746_REG_VT_DATA_HIGH, + .vtmd = AD7746_VTSETUP_VTMD_EXT_VIN, + }, + [VIN_VDD] = { + .addr = AD7746_REG_VT_DATA_HIGH, + .vtmd = AD7746_VTSETUP_VTMD_VDD_MON, + }, + [TEMP_INT] = { + .addr = AD7746_REG_VT_DATA_HIGH, + .vtmd = AD7746_VTSETUP_VTMD_INT_TEMP, + }, + [TEMP_EXT] = { + .addr = AD7746_REG_VT_DATA_HIGH, + .vtmd = AD7746_VTSETUP_VTMD_EXT_TEMP, + }, + [CIN1] = { + .addr = AD7746_REG_CAP_DATA_HIGH, + }, + [CIN1_DIFF] = { + .addr = AD7746_REG_CAP_DATA_HIGH, + .capdiff = 1, + }, + [CIN2] = { + .addr = AD7746_REG_CAP_DATA_HIGH, + .cin2 = 1, + }, + [CIN2_DIFF] = { + .addr = AD7746_REG_CAP_DATA_HIGH, + .cin2 = 1, + .capdiff = 1, + }, +}; + static const struct iio_chan_spec ad7746_channels[] = { [VIN] = { .type = IIO_VOLTAGE, @@ -116,8 +163,7 @@ static const struct iio_chan_spec ad7746_channels[] = { .channel = 0, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), - .address = AD7746_REG_VT_DATA_HIGH << 8 | - AD7746_VTSETUP_VTMD_EXT_VIN, + .address = VIN, }, [VIN_VDD] = { .type = IIO_VOLTAGE, @@ -126,24 +172,21 @@ static const struct iio_chan_spec ad7746_channels[] = { .extend_name = "supply", .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), - .address = AD7746_REG_VT_DATA_HIGH << 8 | - AD7746_VTSETUP_VTMD_VDD_MON, + .address = VIN_VDD, }, [TEMP_INT] = { .type = IIO_TEMP, .indexed = 1, .channel = 0, .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), - .address = AD7746_REG_VT_DATA_HIGH << 8 | - AD7746_VTSETUP_VTMD_INT_TEMP, + .address = TEMP_INT, }, [TEMP_EXT] = { .type = IIO_TEMP, .indexed = 1, .channel = 1, .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), - .address = AD7746_REG_VT_DATA_HIGH << 8 | - AD7746_VTSETUP_VTMD_EXT_TEMP, + .address = TEMP_EXT, }, [CIN1] = { .type = IIO_CAPACITANCE, @@ -153,7 +196,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), - .address = AD7746_REG_CAP_DATA_HIGH << 8, + .address = CIN1, }, [CIN1_DIFF] = { .type = IIO_CAPACITANCE, @@ -165,8 +208,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), - .address = AD7746_REG_CAP_DATA_HIGH << 8 | - AD7746_CAPSETUP_CAPDIFF + .address = CIN1_DIFF, }, [CIN2] = { .type = IIO_CAPACITANCE, @@ -176,8 +218,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), - .address = AD7746_REG_CAP_DATA_HIGH << 8 | - AD7746_CAPSETUP_CIN2, + .address = CIN2, }, [CIN2_DIFF] = { .type = IIO_CAPACITANCE, @@ -189,8 +230,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), - .address = AD7746_REG_CAP_DATA_HIGH << 8 | - AD7746_CAPSETUP_CAPDIFF | AD7746_CAPSETUP_CIN2, + .address = CIN2_DIFF, } }; @@ -226,10 +266,13 @@ static int ad7746_select_channel(struct iio_dev *indio_dev, switch (chan->type) { case IIO_CAPACITANCE: - cap_setup = (chan->address & 0xFF) | AD7746_CAPSETUP_CAPEN; + cap_setup = FIELD_PREP(AD7746_CAPSETUP_CIN2, + ad7746_chan_info[chan->address].cin2) | + FIELD_PREP(AD7746_CAPSETUP_CAPDIFF, + ad7746_chan_info[chan->address].capdiff) | + FIELD_PREP(AD7746_CAPSETUP_CAPEN, 1); vt_setup = chip->vt_setup & ~AD7746_VTSETUP_VTEN; - idx = (chip->config & AD7746_CONF_CAPFS_MASK) >> - AD7746_CONF_CAPFS_SHIFT; + idx = FIELD_GET(AD7746_CONF_CAPFS_MASK, chip->config); delay = ad7746_cap_filter_rate_table[idx][1]; ret = ad7746_set_capdac(chip, chan->channel); @@ -241,10 +284,11 @@ static int ad7746_select_channel(struct iio_dev *indio_dev, break; case IIO_VOLTAGE: case IIO_TEMP: - vt_setup = (chan->address & 0xFF) | AD7746_VTSETUP_VTEN; + vt_setup = FIELD_PREP(AD7746_VTSETUP_VTMD_MASK, + ad7746_chan_info[chan->address].vtmd) | + FIELD_PREP(AD7746_VTSETUP_VTEN, 1); cap_setup = chip->cap_setup & ~AD7746_CAPSETUP_CAPEN; - idx = (chip->config & AD7746_CONF_VTFS_MASK) >> - AD7746_CONF_VTFS_SHIFT; + idx = FIELD_GET(AD7746_CONF_VTFS_MASK, chip->config); delay = ad7746_cap_filter_rate_table[idx][1]; break; default: @@ -327,7 +371,8 @@ static ssize_t ad7746_start_offset_calib(struct device *dev, return ret; return ad7746_start_calib(dev, attr, buf, len, - AD7746_CONF_MODE_OFFS_CAL); + FIELD_PREP(AD7746_CONF_MODE_MASK, + AD7746_CONF_MODE_OFFS_CAL)); } static ssize_t ad7746_start_gain_calib(struct device *dev, @@ -342,7 +387,8 @@ static ssize_t ad7746_start_gain_calib(struct device *dev, return ret; return ad7746_start_calib(dev, attr, buf, len, - AD7746_CONF_MODE_GAIN_CAL); + FIELD_PREP(AD7746_CONF_MODE_MASK, + AD7746_CONF_MODE_GAIN_CAL)); } static IIO_DEVICE_ATTR(in_capacitance0_calibbias_calibration, @@ -369,7 +415,7 @@ static int ad7746_store_cap_filter_rate_setup(struct ad7746_chip_info *chip, i = ARRAY_SIZE(ad7746_cap_filter_rate_table) - 1; chip->config &= ~AD7746_CONF_CAPFS_MASK; - chip->config |= i << AD7746_CONF_CAPFS_SHIFT; + chip->config |= FIELD_PREP(AD7746_CONF_CAPFS_MASK, i); return 0; } @@ -387,7 +433,7 @@ static int ad7746_store_vt_filter_rate_setup(struct ad7746_chip_info *chip, i = ARRAY_SIZE(ad7746_vt_filter_rate_table) - 1; chip->config &= ~AD7746_CONF_VTFS_MASK; - chip->config |= i << AD7746_CONF_VTFS_SHIFT; + chip->config |= FIELD_PREP(AD7746_CONF_VTFS_MASK, i); return 0; } @@ -470,7 +516,7 @@ static int ad7746_write_raw(struct iio_dev *indio_dev, val /= 338646; mutex_lock(&chip->lock); chip->capdac[chan->channel][chan->differential] = val > 0 ? - AD7746_CAPDAC_DACP(val) | AD7746_CAPDAC_DACEN : 0; + FIELD_PREP(AD7746_CAPDAC_DACP_MASK, val) | AD7746_CAPDAC_DACEN : 0; ret = ad7746_set_capdac(chip, chan->channel); if (ret < 0) { @@ -519,14 +565,16 @@ static int ad7746_read_channel(struct iio_dev *indio_dev, return ret; delay = ret; - regval = chip->config | AD7746_CONF_MODE_SINGLE_CONV; + regval = chip->config | FIELD_PREP(AD7746_CONF_MODE_MASK, + AD7746_CONF_MODE_SINGLE_CONV); ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval); if (ret < 0) return ret; msleep(delay); /* Now read the actual register */ - ret = i2c_smbus_read_i2c_block_data(chip->client, chan->address >> 8, + ret = i2c_smbus_read_i2c_block_data(chip->client, + ad7746_chan_info[chan->address].addr, sizeof(data), data); if (ret < 0) return ret; @@ -600,8 +648,8 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_OFFSET: - *val = AD7746_CAPDAC_DACP(chip->capdac[chan->channel] - [chan->differential]) * 338646; + *val = FIELD_GET(AD7746_CAPDAC_DACP_MASK, + chip->capdac[chan->channel][chan->differential]) * 338646; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: @@ -624,13 +672,11 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_SAMP_FREQ: switch (chan->type) { case IIO_CAPACITANCE: - idx = (chip->config & AD7746_CONF_CAPFS_MASK) >> - AD7746_CONF_CAPFS_SHIFT; + idx = FIELD_GET(AD7746_CONF_CAPFS_MASK, chip->config); *val = ad7746_cap_filter_rate_table[idx][0]; return IIO_VAL_INT; case IIO_VOLTAGE: - idx = (chip->config & AD7746_CONF_VTFS_MASK) >> - AD7746_CONF_VTFS_SHIFT; + idx = FIELD_GET(AD7746_CONF_VTFS_MASK, chip->config); *val = ad7746_vt_filter_rate_table[idx][0]; return IIO_VAL_INT; default: @@ -696,16 +742,16 @@ static int ad7746_probe(struct i2c_client *client, if (!ret) { switch (vdd_permille) { case 125: - regval |= AD7746_EXCSETUP_EXCLVL(0); + regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 0); break; case 250: - regval |= AD7746_EXCSETUP_EXCLVL(1); + regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 1); break; case 375: - regval |= AD7746_EXCSETUP_EXCLVL(2); + regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 2); break; case 500: - regval |= AD7746_EXCSETUP_EXCLVL(3); + regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 3); break; default: break; From 90e7853ce051bca3690d3518e523f427e55c4806 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:30 +0100 Subject: [PATCH 054/142] staging: iio: cdc: ad7746: Drop unused i2c_set_clientdata() As the comment states, this was only used in remove() and now there is no explicit remove() function to make use of it. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-10-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 3e4448f3f3dd..81be645f08c5 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -708,8 +708,6 @@ static int ad7746_probe(struct i2c_client *client, return -ENOMEM; chip = iio_priv(indio_dev); mutex_init(&chip->lock); - /* this is only used for device removal purposes */ - i2c_set_clientdata(client, indio_dev); chip->client = client; chip->capdac_set = -1; From 431e9147b4667d67399fe5db4f8203d55811951b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:31 +0100 Subject: [PATCH 055/142] staging: iio: cdc: ad7746: Use _raw and _scale for temperature channels. Performing the maths to rescale a 24 bit raw reading within the driver was resulting in precision losses. So make that userspace's problem by exporting the scale and letting the maths be done in userspace with appropriate precision. Issue identified using roadtester testing framework. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-11-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 81be645f08c5..3e8e7836a583 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -178,14 +178,16 @@ static const struct iio_chan_spec ad7746_channels[] = { .type = IIO_TEMP, .indexed = 1, .channel = 0, - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = TEMP_INT, }, [TEMP_EXT] = { .type = IIO_TEMP, .indexed = 1, .channel = 1, - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), .address = TEMP_EXT, }, [CIN1] = { @@ -581,18 +583,6 @@ static int ad7746_read_channel(struct iio_dev *indio_dev, *val = get_unaligned_be24(data) - 0x800000; - switch (chan->type) { - case IIO_TEMP: - /* - * temperature in milli degrees Celsius - * T = ((*val / 2048) - 4096) * 1000 - */ - *val = (*val * 125) / 256; - break; - default: - break; - } - return 0; } @@ -607,7 +597,6 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - case IIO_CHAN_INFO_PROCESSED: mutex_lock(&chip->lock); ret = ad7746_read_channel(indio_dev, chan, val); mutex_unlock(&chip->lock); @@ -666,6 +655,10 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, *val *= 6; *val2 = 23; return IIO_VAL_FRACTIONAL_LOG2; + case IIO_TEMP: + *val = 125; + *val2 = 8; + return IIO_VAL_FRACTIONAL_LOG2; default: return -EINVAL; } From 5c64990b99aa91622cf044a9a2f7a78de8f770a2 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:32 +0100 Subject: [PATCH 056/142] iio: core: Introduce _zeropoint for differential channels Address an ABI gap for device where the offset of both lines in a differential pair may be controlled so as to allow a wider range of inputs, but without having any direct effect of the differential measurement. _offset cannot be used as to remain in line with existing usage, userspace would be expected to apply it as (_raw + _offset) * _scale whereas _zeropoint is not. i.e. If we were computing the differential in software it would be. ((postive_raw + _zeropoint) - (negative_raw + zeropoint) + _offset) * _scale = ((postive_raw - negative_raw) + _offset) * _scale = (differential_raw + _offset) * _scale Similarly calibbias is expected to tweak the measurement seen, not the adjust the two lines of the differential pair. Needed for in_capacitanceX-capacitanceY_zeropoint for the AD7746 CDC driver. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-12-jic23@kernel.org --- Documentation/ABI/testing/sysfs-bus-iio | 19 +++++++++++++++++++ drivers/iio/industrialio-core.c | 1 + include/linux/iio/types.h | 1 + 3 files changed, 21 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 979f2e2b44f6..80e8a38d1ee2 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -207,6 +207,25 @@ Description: is required is a consistent labeling. Units after application of scale and offset are nanofarads. +What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + For differential channels, this an offset that is applied + equally to both inputs. As the reading is of the difference + between the two inputs, this should not be applied to the _raw + reading by userspace (unlike _offset) and unlike calibbias + it does not affect the differential value measured because + the effect of _zeropoint cancels out across the two inputs + that make up the differential pair. It's purpose is to bring + the individual signals, before the differential is measured, + within the measurement range of the device. The naming is + chosen because if the separate inputs that make the + differential pair are drawn on a graph in their + _raw units, this is the value that the zero point on the + measurement axis represents. It is expressed with the + same scaling as _raw. + What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 40ebc63b7919..67d3d01d2dac 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -168,6 +168,7 @@ static const char * const iio_chan_info_postfix[] = { [IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio", [IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type", [IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient", + [IIO_CHAN_INFO_ZEROPOINT] = "zeropoint", }; /** * iio_device_id() - query the unique ID for the device diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index a7aa91f3a8dc..27143b03909d 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -63,6 +63,7 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_OVERSAMPLING_RATIO, IIO_CHAN_INFO_THERMOCOUPLE_TYPE, IIO_CHAN_INFO_CALIBAMBIENT, + IIO_CHAN_INFO_ZEROPOINT, }; #endif /* _IIO_TYPES_H_ */ From 2d72ead25abb72996a7e92608224d2503a3bac9c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:33 +0100 Subject: [PATCH 057/142] staging: iio: cdc: ad7746: Switch from _offset to _zeropoint for differential channels. As this offset is applied equally to both lines of the differential pair, _ofset should not be used. Use the new ABI _zeropoint instead to avoid userspace software applying this value when calculating real value = (_raw + _offset) * _scale Also add a comment to explain why an offset of 0x800000 is applied within the driver rather than exposed to userspace. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-13-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 3e8e7836a583..d323ae4d9992 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -207,7 +207,7 @@ static const struct iio_chan_spec ad7746_channels[] = { .channel = 0, .channel2 = 2, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), + BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = CIN1_DIFF, @@ -229,7 +229,7 @@ static const struct iio_chan_spec ad7746_channels[] = { .channel = 1, .channel2 = 3, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), + BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = CIN2_DIFF, @@ -506,6 +506,7 @@ static int ad7746_write_raw(struct iio_dev *indio_dev, return 0; case IIO_CHAN_INFO_OFFSET: + case IIO_CHAN_INFO_ZEROPOINT: if (val < 0 || val > 43008000) /* 21pF */ return -EINVAL; @@ -581,6 +582,10 @@ static int ad7746_read_channel(struct iio_dev *indio_dev, if (ret < 0) return ret; + /* + * Offset applied internally becaue the _offset userspace interface is + * needed for the CAP DACs which apply a controllable offset. + */ *val = get_unaligned_be24(data) - 0x800000; return 0; @@ -637,6 +642,7 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_OFFSET: + case IIO_CHAN_INFO_ZEROPOINT: *val = FIELD_GET(AD7746_CAPDAC_DACP_MASK, chip->capdac[chan->channel][chan->differential]) * 338646; From 4b717201a00576a2aad4d02ae61df363279bd934 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:34 +0100 Subject: [PATCH 058/142] staging: iio: cdc: ad7746: Use read_avail() rather than opencoding. Switch over to the IIO core handling for _available attributes making them available for in kernel users and enforcing correct naming etc automatically. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-14-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 39 +++++++++++++++++++++++++++----- 1 file changed, 33 insertions(+), 6 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index d323ae4d9992..02fd29a9f8ce 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -163,6 +163,7 @@ static const struct iio_chan_spec ad7746_channels[] = { .channel = 0, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = VIN, }, [VIN_VDD] = { @@ -172,6 +173,7 @@ static const struct iio_chan_spec ad7746_channels[] = { .extend_name = "supply", .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = VIN_VDD, }, [TEMP_INT] = { @@ -198,6 +200,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = CIN1, }, [CIN1_DIFF] = { @@ -210,6 +213,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = CIN1_DIFF, }, [CIN2] = { @@ -220,6 +224,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = CIN2, }, [CIN2_DIFF] = { @@ -232,6 +237,7 @@ static const struct iio_chan_spec ad7746_channels[] = { BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ), + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), .address = CIN2_DIFF, } }; @@ -440,18 +446,12 @@ static int ad7746_store_vt_filter_rate_setup(struct ad7746_chip_info *chip, return 0; } -static IIO_CONST_ATTR(in_voltage_sampling_frequency_available, "50 31 16 8"); -static IIO_CONST_ATTR(in_capacitance_sampling_frequency_available, - "91 84 50 26 16 13 11 9"); - static struct attribute *ad7746_attributes[] = { &iio_dev_attr_in_capacitance0_calibbias_calibration.dev_attr.attr, &iio_dev_attr_in_capacitance0_calibscale_calibration.dev_attr.attr, &iio_dev_attr_in_capacitance1_calibscale_calibration.dev_attr.attr, &iio_dev_attr_in_capacitance1_calibbias_calibration.dev_attr.attr, &iio_dev_attr_in_voltage0_calibscale_calibration.dev_attr.attr, - &iio_const_attr_in_voltage_sampling_frequency_available.dev_attr.attr, - &iio_const_attr_in_capacitance_sampling_frequency_available.dev_attr.attr, NULL, }; @@ -554,6 +554,32 @@ static int ad7746_write_raw(struct iio_dev *indio_dev, } } +static const int ad7746_v_samp_freq[] = { 50, 31, 16, 8, }; +static const int ad7746_cap_samp_freq[] = { 91, 84, 50, 26, 16, 13, 11, 9, }; + +static int ad7746_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, const int **vals, + int *type, int *length, long mask) +{ + if (mask != IIO_CHAN_INFO_SAMP_FREQ) + return -EINVAL; + + switch (chan->type) { + case IIO_VOLTAGE: + *vals = ad7746_v_samp_freq; + *length = ARRAY_SIZE(ad7746_v_samp_freq); + break; + case IIO_CAPACITANCE: + *vals = ad7746_cap_samp_freq; + *length = ARRAY_SIZE(ad7746_cap_samp_freq); + break; + default: + return -EINVAL; + } + *type = IIO_VAL_INT; + return IIO_AVAIL_LIST; +} + static int ad7746_read_channel(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val) @@ -689,6 +715,7 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, static const struct iio_info ad7746_info = { .attrs = &ad7746_attribute_group, .read_raw = ad7746_read_raw, + .read_avail = ad7746_read_avail, .write_raw = ad7746_write_raw, }; From 6d6c760954dc3075378ce925f8a511c64cbd908f Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:35 +0100 Subject: [PATCH 059/142] staging: iio: ad7746: White space cleanup Tidy up some trivial whitespace issues. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-15-jic23@kernel.org --- drivers/staging/iio/cdc/ad7746.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c index 02fd29a9f8ce..b266f5328140 100644 --- a/drivers/staging/iio/cdc/ad7746.c +++ b/drivers/staging/iio/cdc/ad7746.c @@ -21,9 +21,7 @@ #include #include -/* - * AD7746 Register Definition - */ +/* AD7746 Register Definition */ #define AD7746_REG_STATUS 0 #define AD7746_REG_CAP_DATA_HIGH 1 @@ -244,12 +242,12 @@ static const struct iio_chan_spec ad7746_channels[] = { /* Values are Update Rate (Hz), Conversion Time (ms) + 1*/ static const unsigned char ad7746_vt_filter_rate_table[][2] = { - {50, 20 + 1}, {31, 32 + 1}, {16, 62 + 1}, {8, 122 + 1}, + { 50, 20 + 1 }, { 31, 32 + 1 }, { 16, 62 + 1 }, { 8, 122 + 1 }, }; static const unsigned char ad7746_cap_filter_rate_table[][2] = { - {91, 11 + 1}, {84, 12 + 1}, {50, 20 + 1}, {26, 38 + 1}, - {16, 62 + 1}, {13, 77 + 1}, {11, 92 + 1}, {9, 110 + 1}, + { 91, 11 + 1 }, { 84, 12 + 1 }, { 50, 20 + 1 }, { 26, 38 + 1 }, + { 16, 62 + 1 }, { 13, 77 + 1 }, { 11, 92 + 1 }, { 9, 110 + 1 }, }; static int ad7746_set_capdac(struct ad7746_chip_info *chip, int channel) @@ -732,6 +730,7 @@ static int ad7746_probe(struct i2c_client *client, indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip)); if (!indio_dev) return -ENOMEM; + chip = iio_priv(indio_dev); mutex_init(&chip->lock); @@ -782,8 +781,8 @@ static int ad7746_probe(struct i2c_client *client, } } - ret = i2c_smbus_write_byte_data(chip->client, - AD7746_REG_EXC_SETUP, regval); + ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_EXC_SETUP, + regval); if (ret < 0) return ret; @@ -796,7 +795,6 @@ static const struct i2c_device_id ad7746_id[] = { { "ad7747", 7747 }, {} }; - MODULE_DEVICE_TABLE(i2c, ad7746_id); static const struct of_device_id ad7746_of_match[] = { @@ -805,7 +803,6 @@ static const struct of_device_id ad7746_of_match[] = { { .compatible = "adi,ad7747" }, { }, }; - MODULE_DEVICE_TABLE(of, ad7746_of_match); static struct i2c_driver ad7746_driver = { From cc21231ef0995a6507f2976e40fa473b82e84a44 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 26 Jun 2022 13:29:36 +0100 Subject: [PATCH 060/142] iio: cdc: ad7746: Add device specific ABI documentation. The datasheet description of offset calibration is complex, so for that on just refer the reader to the device datasheet. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-16-jic23@kernel.org --- Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746 | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746 diff --git a/Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746 b/Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746 new file mode 100644 index 000000000000..02ca8941dce1 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746 @@ -0,0 +1,11 @@ +What: /sys/.../iio:deviceX/in_capacitableY_calibbias_calibration +What: /sys/.../iio:deviceX/in_capacitableY_calibscale_calibration +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Write 1 to trigger a calibration of the calibbias or + calibscale. For calibscale, a full scale capacitance should + be connected to the capacitance input and a + calibscale_calibration then started. For calibbias see + the device datasheet section on "capacitive system offset + calibration". From 40b5c4d5b5a67e79eef86a653cdc8b10b4d73f11 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 15:01:44 +0100 Subject: [PATCH 061/142] iio: cdc: ad7746: Move driver out of staging. All known major issues with this driver resolved so time to move it out of staging. This also allows us to remove the now empty staging/iio/cdc directory and build files. Note this cleanup work was done using the roadtest framework. https://lore.kernel.org/all/20220311162445.346685-1-vincent.whitchurch@axis.com/ Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko --- drivers/iio/cdc/Kconfig | 10 ++++++++++ drivers/iio/cdc/Makefile | 1 + drivers/{staging => }/iio/cdc/ad7746.c | 0 drivers/staging/iio/Kconfig | 1 - drivers/staging/iio/Makefile | 1 - drivers/staging/iio/cdc/Kconfig | 17 ----------------- drivers/staging/iio/cdc/Makefile | 6 ------ 7 files changed, 11 insertions(+), 25 deletions(-) rename drivers/{staging => }/iio/cdc/ad7746.c (100%) delete mode 100644 drivers/staging/iio/cdc/Kconfig delete mode 100644 drivers/staging/iio/cdc/Makefile diff --git a/drivers/iio/cdc/Kconfig b/drivers/iio/cdc/Kconfig index 5e3319a3ff48..e0a5ce66a984 100644 --- a/drivers/iio/cdc/Kconfig +++ b/drivers/iio/cdc/Kconfig @@ -14,4 +14,14 @@ config AD7150 To compile this driver as a module, choose M here: the module will be called ad7150. +config AD7746 + tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver" + depends on I2C + help + Say yes here to build support for Analog Devices capacitive sensors. + (AD7745, AD7746, AD7747) Provides direct access via sysfs. + + To compile this driver as a module, choose M here: the + module will be called ad7746. + endmenu diff --git a/drivers/iio/cdc/Makefile b/drivers/iio/cdc/Makefile index ee490637b032..41db756d8020 100644 --- a/drivers/iio/cdc/Makefile +++ b/drivers/iio/cdc/Makefile @@ -4,3 +4,4 @@ # obj-$(CONFIG_AD7150) += ad7150.o +obj-$(CONFIG_AD7746) += ad7746.o diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/iio/cdc/ad7746.c similarity index 100% rename from drivers/staging/iio/cdc/ad7746.c rename to drivers/iio/cdc/ad7746.c diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig index a8e970db179d..afd05bf3345e 100644 --- a/drivers/staging/iio/Kconfig +++ b/drivers/staging/iio/Kconfig @@ -8,7 +8,6 @@ menu "IIO staging drivers" source "drivers/staging/iio/accel/Kconfig" source "drivers/staging/iio/adc/Kconfig" source "drivers/staging/iio/addac/Kconfig" -source "drivers/staging/iio/cdc/Kconfig" source "drivers/staging/iio/frequency/Kconfig" source "drivers/staging/iio/impedance-analyzer/Kconfig" source "drivers/staging/iio/meter/Kconfig" diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile index b15904b99581..5ed56fe57e14 100644 --- a/drivers/staging/iio/Makefile +++ b/drivers/staging/iio/Makefile @@ -6,7 +6,6 @@ obj-y += accel/ obj-y += adc/ obj-y += addac/ -obj-y += cdc/ obj-y += frequency/ obj-y += impedance-analyzer/ obj-y += meter/ diff --git a/drivers/staging/iio/cdc/Kconfig b/drivers/staging/iio/cdc/Kconfig deleted file mode 100644 index a7386bbbcb79..000000000000 --- a/drivers/staging/iio/cdc/Kconfig +++ /dev/null @@ -1,17 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# -# CDC drivers -# -menu "Capacitance to digital converters" - -config AD7746 - tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver" - depends on I2C - help - Say yes here to build support for Analog Devices capacitive sensors. - (AD7745, AD7746, AD7747) Provides direct access via sysfs. - - To compile this driver as a module, choose M here: the - module will be called ad7746. - -endmenu diff --git a/drivers/staging/iio/cdc/Makefile b/drivers/staging/iio/cdc/Makefile deleted file mode 100644 index afb7499a7090..000000000000 --- a/drivers/staging/iio/cdc/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# -# Makefile for industrial I/O CDC drivers -# - -obj-$(CONFIG_AD7746) += ad7746.o From becbe550a36e027440ca0ccef2195e67c054e5bb Mon Sep 17 00:00:00 2001 From: Francesco Dolcini Date: Tue, 12 Jul 2022 18:33:44 +0200 Subject: [PATCH 062/142] dt-bindings: iio: adc: stmpe: Remove node name requirement STMPE driver does not require a specific node name anymore, only the compatible is checked, update binding according to this. Signed-off-by: Francesco Dolcini Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220712163345.445811-5-francesco.dolcini@toradex.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/st,stmpe-adc.yaml | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/st,stmpe-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stmpe-adc.yaml index 9049c699152f..333744a2159c 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stmpe-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/st,stmpe-adc.yaml @@ -13,8 +13,7 @@ description: This ADC forms part of an ST microelectronics STMPE multifunction device . The ADC is shared with the STMPE touchscreen. As a result some ADC related settings are specified in the parent node. - The node name myst be stmpe_adc and should be a child node of the stmpe node - to which it belongs. + The node should be a child node of the stmpe node to which it belongs. properties: compatible: From 89aba5759891acb859ab6d34453a8b933e38ace5 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 15:54:56 +0100 Subject: [PATCH 063/142] iio: test: Mark file local structure arrays static. Warning cleanup: drivers/iio/test/iio-test-rescale.c:32:30: warning: symbol 'scale_cases' was not declared. Should it be static? drivers/iio/test/iio-test-rescale.c:480:30: warning: symbol 'offset_cases' was not declared. Should it be static? Signed-off-by: Jonathan Cameron Cc: Liam Beguin Reviewed-by: Liam Beguin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807145457.646062-2-jic23@kernel.org --- drivers/iio/test/iio-test-rescale.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/test/iio-test-rescale.c b/drivers/iio/test/iio-test-rescale.c index cc782ccff880..31ee55a6faed 100644 --- a/drivers/iio/test/iio-test-rescale.c +++ b/drivers/iio/test/iio-test-rescale.c @@ -29,7 +29,7 @@ struct rescale_tc_data { const char *expected_off; }; -const struct rescale_tc_data scale_cases[] = { +static const struct rescale_tc_data scale_cases[] = { /* * Typical use cases */ @@ -477,7 +477,7 @@ const struct rescale_tc_data scale_cases[] = { }, }; -const struct rescale_tc_data offset_cases[] = { +static const struct rescale_tc_data offset_cases[] = { /* * Typical use cases */ From 282d16b628e4979eee692f5f93a936e5d613c926 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 15:54:57 +0100 Subject: [PATCH 064/142] iio: light: cm32181: Mark the dev_pm_ops static. Only accessed from the local file. Warning: drivers/iio/light/cm32181.c:508:1: warning: symbol 'cm32181_pm_ops' was not declared. Should it be static? Fixes: 68c1b3dd5c48 ("iio: light: cm32181: Add PM support") Signed-off-by: Jonathan Cameron Cc: Kai-Heng Feng Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807145457.646062-3-jic23@kernel.org --- drivers/iio/light/cm32181.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c index edbe6a3138d0..001055d09750 100644 --- a/drivers/iio/light/cm32181.c +++ b/drivers/iio/light/cm32181.c @@ -505,7 +505,7 @@ static int cm32181_resume(struct device *dev) cm32181->conf_regs[CM32181_REG_ADDR_CMD]); } -DEFINE_SIMPLE_DEV_PM_OPS(cm32181_pm_ops, cm32181_suspend, cm32181_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(cm32181_pm_ops, cm32181_suspend, cm32181_resume); static const struct of_device_id cm32181_of_match[] = { { .compatible = "capella,cm3218" }, From e48668a38bf420c660b07851985e6922fcf4b194 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 16:12:16 +0100 Subject: [PATCH 065/142] staging: iio: frequency: ad9834: Fix alignment for DMA safety ____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807151218.656881-3-jic23@kernel.org --- drivers/staging/iio/frequency/ad9834.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c index 94b131ef8a22..2b4267a87e65 100644 --- a/drivers/staging/iio/frequency/ad9834.c +++ b/drivers/staging/iio/frequency/ad9834.c @@ -83,7 +83,7 @@ struct ad9834_state { * DMA (thus cache coherency maintenance) requires the * transfer buffers to live in their own cache lines. */ - __be16 data ____cacheline_aligned; + __be16 data __aligned(IIO_DMA_MINALIGN); __be16 freq_data[2]; }; From 48a1319164d9339ad50a25085cad6b879fef9fbe Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 16:12:17 +0100 Subject: [PATCH 066/142] staging: iio: meter: ade7854: Fix alignment for DMA safety ____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Cc: Rodrigo Siqueira Link: https://lore.kernel.org/r/20220807151218.656881-4-jic23@kernel.org --- drivers/staging/iio/meter/ade7854.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/meter/ade7854.h b/drivers/staging/iio/meter/ade7854.h index a51e6e3183d3..7a49f8f1016f 100644 --- a/drivers/staging/iio/meter/ade7854.h +++ b/drivers/staging/iio/meter/ade7854.h @@ -162,7 +162,7 @@ struct ade7854_state { int bits); int irq; struct mutex buf_lock; - u8 tx[ADE7854_MAX_TX] ____cacheline_aligned; + u8 tx[ADE7854_MAX_TX] __aligned(IIO_DMA_MINALIGN); u8 rx[ADE7854_MAX_RX]; }; From 4c0babbd978a98dfbdacbe078817ea9c953b3298 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 16:12:18 +0100 Subject: [PATCH 067/142] staging: iio: resolver: ad2s1210: Fix alignment for DMA safety ____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. As the tx[] an rx[] buffers are only used in the same SPI exchanges, we should be safe with them on the same cacheline. Hence only mark the first one __aligned(IIO_DMA_MINALIGN). Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807151218.656881-5-jic23@kernel.org --- drivers/staging/iio/resolver/ad2s1210.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c index c0b2716d0511..e4cf42438487 100644 --- a/drivers/staging/iio/resolver/ad2s1210.c +++ b/drivers/staging/iio/resolver/ad2s1210.c @@ -94,8 +94,8 @@ struct ad2s1210_state { bool hysteresis; u8 resolution; enum ad2s1210_mode mode; - u8 rx[2] ____cacheline_aligned; - u8 tx[2] ____cacheline_aligned; + u8 rx[2] __aligned(IIO_DMA_MINALIGN); + u8 tx[2]; }; static const int ad2s1210_mode_vals[4][2] = { From 1c4986f7e1fdbc44df66b37ee80722a2fcb02163 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 17:21:21 +0100 Subject: [PATCH 068/142] iio: adc: mt6360: Drop an incorrect __maybe_unused marking. Given the struct platform_driver has one of it's elements assigned to point to the of_device_id table, it is never going to be unused. Drop the marking. Signed-off-by: Jonathan Cameron Cc: Gene Chen Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807162121.862894-1-jic23@kernel.org --- drivers/iio/adc/mt6360-adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/mt6360-adc.c b/drivers/iio/adc/mt6360-adc.c index 35260d9e4e47..3710473e526f 100644 --- a/drivers/iio/adc/mt6360-adc.c +++ b/drivers/iio/adc/mt6360-adc.c @@ -353,7 +353,7 @@ static int mt6360_adc_probe(struct platform_device *pdev) return devm_iio_device_register(&pdev->dev, indio_dev); } -static const struct of_device_id __maybe_unused mt6360_adc_of_id[] = { +static const struct of_device_id mt6360_adc_of_id[] = { { .compatible = "mediatek,mt6360-adc", }, {} }; From c3b4afb1825b120481798512dd6a647804c5e521 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 19:45:33 +0100 Subject: [PATCH 069/142] iio: magn: hmc5843: Drop excessive indentation of assignments of hmc5843_driver This formatting is odd, so fix it to be more standard. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807184534.1037363-2-jic23@kernel.org --- drivers/iio/magnetometer/hmc5843_spi.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/iio/magnetometer/hmc5843_spi.c b/drivers/iio/magnetometer/hmc5843_spi.c index 8403f09aba39..310027a53342 100644 --- a/drivers/iio/magnetometer/hmc5843_spi.c +++ b/drivers/iio/magnetometer/hmc5843_spi.c @@ -86,13 +86,13 @@ static const struct spi_device_id hmc5843_id[] = { MODULE_DEVICE_TABLE(spi, hmc5843_id); static struct spi_driver hmc5843_driver = { - .driver = { - .name = "hmc5843", - .pm = HMC5843_PM_OPS, - }, - .id_table = hmc5843_id, - .probe = hmc5843_spi_probe, - .remove = hmc5843_spi_remove, + .driver = { + .name = "hmc5843", + .pm = HMC5843_PM_OPS, + }, + .id_table = hmc5843_id, + .probe = hmc5843_spi_probe, + .remove = hmc5843_spi_remove, }; module_spi_driver(hmc5843_driver); From 71041f73dc685ccaa7d150aa5eecc02609117739 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 19:45:34 +0100 Subject: [PATCH 070/142] iio: magn: hmc5843: Move struct dev_pm_ops out of header Having this structure defined static in the header lead to unnecessary duplication and required additional symbol exports. Use the EXPORT_NS_SIMPLE_DEV_PM_OPS() to clean this up in the same fashion as many other drivers do this. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807184534.1037363-3-jic23@kernel.org --- drivers/iio/magnetometer/hmc5843.h | 13 +------------ drivers/iio/magnetometer/hmc5843_core.c | 8 ++++---- drivers/iio/magnetometer/hmc5843_i2c.c | 2 +- drivers/iio/magnetometer/hmc5843_spi.c | 2 +- 4 files changed, 7 insertions(+), 18 deletions(-) diff --git a/drivers/iio/magnetometer/hmc5843.h b/drivers/iio/magnetometer/hmc5843.h index 9120c8bbf3dd..60fbb5431c88 100644 --- a/drivers/iio/magnetometer/hmc5843.h +++ b/drivers/iio/magnetometer/hmc5843.h @@ -52,16 +52,5 @@ int hmc5843_common_probe(struct device *dev, struct regmap *regmap, enum hmc5843_ids id, const char *name); void hmc5843_common_remove(struct device *dev); -int hmc5843_common_suspend(struct device *dev); -int hmc5843_common_resume(struct device *dev); - -#ifdef CONFIG_PM_SLEEP -static __maybe_unused SIMPLE_DEV_PM_OPS(hmc5843_pm_ops, - hmc5843_common_suspend, - hmc5843_common_resume); -#define HMC5843_PM_OPS (&hmc5843_pm_ops) -#else -#define HMC5843_PM_OPS NULL -#endif - +extern const struct dev_pm_ops hmc5843_pm_ops; #endif /* HMC5843_CORE_H */ diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c index 4a63b2da9df0..c5521d61da29 100644 --- a/drivers/iio/magnetometer/hmc5843_core.c +++ b/drivers/iio/magnetometer/hmc5843_core.c @@ -603,19 +603,19 @@ static const struct iio_info hmc5843_info = { static const unsigned long hmc5843_scan_masks[] = {0x7, 0}; -int hmc5843_common_suspend(struct device *dev) +static int hmc5843_common_suspend(struct device *dev) { return hmc5843_set_mode(iio_priv(dev_get_drvdata(dev)), HMC5843_MODE_SLEEP); } -EXPORT_SYMBOL_NS(hmc5843_common_suspend, IIO_HMC5843); -int hmc5843_common_resume(struct device *dev) +static int hmc5843_common_resume(struct device *dev) { return hmc5843_set_mode(iio_priv(dev_get_drvdata(dev)), HMC5843_MODE_CONVERSION_CONTINUOUS); } -EXPORT_SYMBOL_NS(hmc5843_common_resume, IIO_HMC5843); +EXPORT_NS_SIMPLE_DEV_PM_OPS(hmc5843_pm_ops, hmc5843_common_suspend, + hmc5843_common_resume, IIO_HMC5843); int hmc5843_common_probe(struct device *dev, struct regmap *regmap, enum hmc5843_ids id, const char *name) diff --git a/drivers/iio/magnetometer/hmc5843_i2c.c b/drivers/iio/magnetometer/hmc5843_i2c.c index 8d2ff8fc204d..825a881d37fb 100644 --- a/drivers/iio/magnetometer/hmc5843_i2c.c +++ b/drivers/iio/magnetometer/hmc5843_i2c.c @@ -93,7 +93,7 @@ MODULE_DEVICE_TABLE(of, hmc5843_of_match); static struct i2c_driver hmc5843_driver = { .driver = { .name = "hmc5843", - .pm = HMC5843_PM_OPS, + .pm = pm_sleep_ptr(&hmc5843_pm_ops), .of_match_table = hmc5843_of_match, }, .id_table = hmc5843_id, diff --git a/drivers/iio/magnetometer/hmc5843_spi.c b/drivers/iio/magnetometer/hmc5843_spi.c index 310027a53342..c42d2e2a6a6c 100644 --- a/drivers/iio/magnetometer/hmc5843_spi.c +++ b/drivers/iio/magnetometer/hmc5843_spi.c @@ -88,7 +88,7 @@ MODULE_DEVICE_TABLE(spi, hmc5843_id); static struct spi_driver hmc5843_driver = { .driver = { .name = "hmc5843", - .pm = HMC5843_PM_OPS, + .pm = pm_sleep_ptr(&hmc5843_pm_ops), }, .id_table = hmc5843_id, .probe = hmc5843_spi_probe, From 8bbce0954fa1c695272421d047c53447fa709535 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:28 +0200 Subject: [PATCH 071/142] iio: adc: ad7124: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-1-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7124.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index c5b785d8b241..4088786e1026 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -936,11 +936,6 @@ static void ad7124_reg_disable(void *r) regulator_disable(r); } -static void ad7124_clk_disable(void *c) -{ - clk_disable_unprepare(c); -} - static int ad7124_probe(struct spi_device *spi) { const struct ad7124_chip_info *info; @@ -993,18 +988,10 @@ static int ad7124_probe(struct spi_device *spi) return ret; } - st->mclk = devm_clk_get(&spi->dev, "mclk"); + st->mclk = devm_clk_get_enabled(&spi->dev, "mclk"); if (IS_ERR(st->mclk)) return PTR_ERR(st->mclk); - ret = clk_prepare_enable(st->mclk); - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&spi->dev, ad7124_clk_disable, st->mclk); - if (ret) - return ret; - ret = ad7124_soft_reset(st); if (ret < 0) return ret; From 25f7e79515e76204ca03daaf77dab1e90ef97b33 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:29 +0200 Subject: [PATCH 072/142] iio: adc: ad7768-1: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-2-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7768-1.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 652db768ef37..70a25949142c 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -539,13 +539,6 @@ static void ad7768_regulator_disable(void *data) regulator_disable(st->vref); } -static void ad7768_clk_disable(void *data) -{ - struct ad7768_state *st = data; - - clk_disable_unprepare(st->mclk); -} - static int ad7768_set_channel_label(struct iio_dev *indio_dev, int num_channels) { @@ -600,18 +593,10 @@ static int ad7768_probe(struct spi_device *spi) if (ret) return ret; - st->mclk = devm_clk_get(&spi->dev, "mclk"); + st->mclk = devm_clk_get_enabled(&spi->dev, "mclk"); if (IS_ERR(st->mclk)) return PTR_ERR(st->mclk); - ret = clk_prepare_enable(st->mclk); - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&spi->dev, ad7768_clk_disable, st); - if (ret) - return ret; - st->mclk_freq = clk_get_rate(st->mclk); mutex_init(&st->lock); From cdd07b3ab94a020570132558442a26e74b70bc42 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:30 +0200 Subject: [PATCH 073/142] iio: adc: ad9467: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-3-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad9467.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c index 5a5f33f7bc8f..7534572f7475 100644 --- a/drivers/iio/adc/ad9467.c +++ b/drivers/iio/adc/ad9467.c @@ -378,13 +378,6 @@ static int ad9467_preenable_setup(struct adi_axi_adc_conv *conv) return ad9467_outputmode_set(st->spi, st->output_mode); } -static void ad9467_clk_disable(void *data) -{ - struct ad9467_state *st = data; - - clk_disable_unprepare(st->clk); -} - static int ad9467_probe(struct spi_device *spi) { const struct ad9467_chip_info *info; @@ -404,18 +397,10 @@ static int ad9467_probe(struct spi_device *spi) st = adi_axi_adc_conv_priv(conv); st->spi = spi; - st->clk = devm_clk_get(&spi->dev, "adc-clk"); + st->clk = devm_clk_get_enabled(&spi->dev, "adc-clk"); if (IS_ERR(st->clk)) return PTR_ERR(st->clk); - ret = clk_prepare_enable(st->clk); - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&spi->dev, ad9467_clk_disable, st); - if (ret) - return ret; - st->pwrdown_gpio = devm_gpiod_get_optional(&spi->dev, "powerdown", GPIOD_OUT_LOW); if (IS_ERR(st->pwrdown_gpio)) From 51f2f910a551b3e8a23ea1d21b836716658908fe Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:31 +0200 Subject: [PATCH 074/142] iio: adc: ingenic-adc: Benefit from devm_clk_get_prepared() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_prepared() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-4-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ingenic-adc.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index 9e08f3abeea6..a7325dbbb99a 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -734,11 +734,6 @@ static int ingenic_adc_fwnode_xlate(struct iio_dev *iio_dev, return -EINVAL; } -static void ingenic_adc_clk_cleanup(void *data) -{ - clk_unprepare(data); -} - static const struct iio_info ingenic_adc_info = { .write_raw = ingenic_adc_write_raw, .read_raw = ingenic_adc_read_raw, @@ -858,13 +853,13 @@ static int ingenic_adc_probe(struct platform_device *pdev) if (IS_ERR(adc->base)) return PTR_ERR(adc->base); - adc->clk = devm_clk_get(dev, "adc"); + adc->clk = devm_clk_get_prepared(dev, "adc"); if (IS_ERR(adc->clk)) { dev_err(dev, "Unable to get clock\n"); return PTR_ERR(adc->clk); } - ret = clk_prepare_enable(adc->clk); + ret = clk_enable(adc->clk); if (ret) { dev_err(dev, "Failed to enable clock\n"); return ret; @@ -893,12 +888,6 @@ static int ingenic_adc_probe(struct platform_device *pdev) usleep_range(2000, 3000); /* Must wait at least 2ms. */ clk_disable(adc->clk); - ret = devm_add_action_or_reset(dev, ingenic_adc_clk_cleanup, adc->clk); - if (ret) { - dev_err(dev, "Unable to add action\n"); - return ret; - } - iio_dev->name = "jz-adc"; iio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE; iio_dev->setup_ops = &ingenic_buffer_setup_ops; From 4004912e0ce545074b6177c43a70bd36c9c28006 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:32 +0200 Subject: [PATCH 075/142] iio: adc: lpc18xx: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-5-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/lpc18xx_adc.c | 18 +----------------- 1 file changed, 1 insertion(+), 17 deletions(-) diff --git a/drivers/iio/adc/lpc18xx_adc.c b/drivers/iio/adc/lpc18xx_adc.c index 42e6cd6fa6f7..450a243d1f7c 100644 --- a/drivers/iio/adc/lpc18xx_adc.c +++ b/drivers/iio/adc/lpc18xx_adc.c @@ -121,11 +121,6 @@ static void lpc18xx_clear_cr_reg(void *data) writel(0, adc->base + LPC18XX_ADC_CR); } -static void lpc18xx_clk_disable(void *clk) -{ - clk_disable_unprepare(clk); -} - static void lpc18xx_regulator_disable(void *vref) { regulator_disable(vref); @@ -151,7 +146,7 @@ static int lpc18xx_adc_probe(struct platform_device *pdev) if (IS_ERR(adc->base)) return PTR_ERR(adc->base); - adc->clk = devm_clk_get(&pdev->dev, NULL); + adc->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(adc->clk)) return dev_err_probe(&pdev->dev, PTR_ERR(adc->clk), "error getting clock\n"); @@ -177,17 +172,6 @@ static int lpc18xx_adc_probe(struct platform_device *pdev) if (ret) return ret; - ret = clk_prepare_enable(adc->clk); - if (ret) { - dev_err(&pdev->dev, "unable to enable clock\n"); - return ret; - } - - ret = devm_add_action_or_reset(&pdev->dev, lpc18xx_clk_disable, - adc->clk); - if (ret) - return ret; - rate = clk_get_rate(adc->clk); clkdiv = DIV_ROUND_UP(rate, LPC18XX_ADC_CLK_TARGET); From dcb9bd105c9e6a69848c68575fa174ce6d7e9549 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:34 +0200 Subject: [PATCH 076/142] iio: adc: ti-ads131e08: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-7-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads131e08.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c index 32237cacc9a3..5235a93f28bc 100644 --- a/drivers/iio/adc/ti-ads131e08.c +++ b/drivers/iio/adc/ti-ads131e08.c @@ -797,13 +797,6 @@ static void ads131e08_regulator_disable(void *data) regulator_disable(st->vref_reg); } -static void ads131e08_clk_disable(void *data) -{ - struct ads131e08_state *st = data; - - clk_disable_unprepare(st->adc_clk); -} - static int ads131e08_probe(struct spi_device *spi) { const struct ads131e08_info *info; @@ -896,21 +889,11 @@ static int ads131e08_probe(struct spi_device *spi) st->vref_reg = NULL; } - st->adc_clk = devm_clk_get(&spi->dev, "adc-clk"); + st->adc_clk = devm_clk_get_enabled(&spi->dev, "adc-clk"); if (IS_ERR(st->adc_clk)) return dev_err_probe(&spi->dev, PTR_ERR(st->adc_clk), "failed to get the ADC clock\n"); - ret = clk_prepare_enable(st->adc_clk); - if (ret) { - dev_err(&spi->dev, "failed to prepare/enable the ADC clock\n"); - return ret; - } - - ret = devm_add_action_or_reset(&spi->dev, ads131e08_clk_disable, st); - if (ret) - return ret; - adc_clk_hz = clk_get_rate(st->adc_clk); if (!adc_clk_hz) { dev_err(&spi->dev, "failed to get the ADC clock rate\n"); From 40c0c1312c1b558463ddbf494d1f4569449cf11e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:35 +0200 Subject: [PATCH 077/142] iio: adc: xilinx-ams: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-8-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/xilinx-ams.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) diff --git a/drivers/iio/adc/xilinx-ams.c b/drivers/iio/adc/xilinx-ams.c index 9cd2713146e5..5b4bdf3a26bb 100644 --- a/drivers/iio/adc/xilinx-ams.c +++ b/drivers/iio/adc/xilinx-ams.c @@ -1351,11 +1351,6 @@ static const struct of_device_id ams_of_match_table[] = { }; MODULE_DEVICE_TABLE(of, ams_of_match_table); -static void ams_clk_disable_unprepare(void *data) -{ - clk_disable_unprepare(data); -} - static int ams_probe(struct platform_device *pdev) { struct iio_dev *indio_dev; @@ -1380,18 +1375,10 @@ static int ams_probe(struct platform_device *pdev) if (IS_ERR(ams->base)) return PTR_ERR(ams->base); - ams->clk = devm_clk_get(&pdev->dev, NULL); + ams->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(ams->clk)) return PTR_ERR(ams->clk); - ret = clk_prepare_enable(ams->clk); - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&pdev->dev, ams_clk_disable_unprepare, ams->clk); - if (ret < 0) - return ret; - ret = devm_delayed_work_autocancel(&pdev->dev, &ams->ams_unmask_work, ams_unmask_worker); if (ret < 0) From 72336966eedbea3e264be46968beabd29e907ca8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:36 +0200 Subject: [PATCH 078/142] iio: adc: xilinx-xadc: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-9-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/xilinx-xadc-core.c | 18 +----------------- 1 file changed, 1 insertion(+), 17 deletions(-) diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c index 1b247722ba25..292f2892d223 100644 --- a/drivers/iio/adc/xilinx-xadc-core.c +++ b/drivers/iio/adc/xilinx-xadc-core.c @@ -1296,13 +1296,6 @@ static const char * const xadc_type_names[] = { [XADC_TYPE_US] = "xilinx-system-monitor", }; -static void xadc_clk_disable_unprepare(void *data) -{ - struct clk *clk = data; - - clk_disable_unprepare(clk); -} - static void xadc_cancel_delayed_work(void *data) { struct delayed_work *work = data; @@ -1374,19 +1367,10 @@ static int xadc_probe(struct platform_device *pdev) } } - xadc->clk = devm_clk_get(dev, NULL); + xadc->clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(xadc->clk)) return PTR_ERR(xadc->clk); - ret = clk_prepare_enable(xadc->clk); - if (ret) - return ret; - - ret = devm_add_action_or_reset(dev, - xadc_clk_disable_unprepare, xadc->clk); - if (ret) - return ret; - /* * Make sure not to exceed the maximum samplerate since otherwise the * resulting interrupt storm will soft-lock the system. From 3ea5b370afd4babbdff48775701bdd839dbb0407 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:37 +0200 Subject: [PATCH 079/142] iio: frequency: adf4371: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-10-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/frequency/adf4371.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/drivers/iio/frequency/adf4371.c b/drivers/iio/frequency/adf4371.c index 135c8cedc33d..b27088464826 100644 --- a/drivers/iio/frequency/adf4371.c +++ b/drivers/iio/frequency/adf4371.c @@ -540,13 +540,6 @@ static int adf4371_setup(struct adf4371_state *st) return regmap_bulk_write(st->regmap, ADF4371_REG(0x30), st->buf, 5); } -static void adf4371_clk_disable(void *data) -{ - struct adf4371_state *st = data; - - clk_disable_unprepare(st->clkin); -} - static int adf4371_probe(struct spi_device *spi) { const struct spi_device_id *id = spi_get_device_id(spi); @@ -579,18 +572,10 @@ static int adf4371_probe(struct spi_device *spi) indio_dev->channels = st->chip_info->channels; indio_dev->num_channels = st->chip_info->num_channels; - st->clkin = devm_clk_get(&spi->dev, "clkin"); + st->clkin = devm_clk_get_enabled(&spi->dev, "clkin"); if (IS_ERR(st->clkin)) return PTR_ERR(st->clkin); - ret = clk_prepare_enable(st->clkin); - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&spi->dev, adf4371_clk_disable, st); - if (ret) - return ret; - st->clkin_freq = clk_get_rate(st->clkin); ret = adf4371_setup(st); From 129a90cf81d510551e73aaaa1efb9befb0c17e52 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:39 +0200 Subject: [PATCH 080/142] iio: frequency: adrf6780: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-12-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/frequency/adrf6780.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) diff --git a/drivers/iio/frequency/adrf6780.c b/drivers/iio/frequency/adrf6780.c index 21878bad0909..b4defb82f37e 100644 --- a/drivers/iio/frequency/adrf6780.c +++ b/drivers/iio/frequency/adrf6780.c @@ -441,11 +441,6 @@ static void adrf6780_properties_parse(struct adrf6780_state *st) st->vdet_out_en = device_property_read_bool(&spi->dev, "adi,vdet-out-en"); } -static void adrf6780_clk_disable(void *data) -{ - clk_disable_unprepare(data); -} - static void adrf6780_powerdown(void *data) { /* Disable all components in the Enable Register */ @@ -473,20 +468,11 @@ static int adrf6780_probe(struct spi_device *spi) adrf6780_properties_parse(st); - st->clkin = devm_clk_get(&spi->dev, "lo_in"); + st->clkin = devm_clk_get_enabled(&spi->dev, "lo_in"); if (IS_ERR(st->clkin)) return dev_err_probe(&spi->dev, PTR_ERR(st->clkin), "failed to get the LO input clock\n"); - ret = clk_prepare_enable(st->clkin); - if (ret) - return ret; - - ret = devm_add_action_or_reset(&spi->dev, adrf6780_clk_disable, - st->clkin); - if (ret) - return ret; - mutex_init(&st->lock); ret = adrf6780_init(st); From 33dae107b6a9dfe92eba97b4a1df7402f9637f11 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 8 Aug 2022 22:47:40 +0200 Subject: [PATCH 081/142] iio: imu: adis16475: Benefit from devm_clk_get_enabled() to simplify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by: Andy Shevchenko Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20220808204740.307667-13-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/imu/adis16475.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) diff --git a/drivers/iio/imu/adis16475.c b/drivers/iio/imu/adis16475.c index ff2b0fab840a..aec55f7e1f26 100644 --- a/drivers/iio/imu/adis16475.c +++ b/drivers/iio/imu/adis16475.c @@ -1120,11 +1120,6 @@ check_burst32: return IRQ_HANDLED; } -static void adis16475_disable_clk(void *data) -{ - clk_disable_unprepare((struct clk *)data); -} - static int adis16475_config_sync_mode(struct adis16475 *st) { int ret; @@ -1150,19 +1145,11 @@ static int adis16475_config_sync_mode(struct adis16475 *st) /* All the other modes require external input signal */ if (sync->sync_mode != ADIS16475_SYNC_OUTPUT) { - struct clk *clk = devm_clk_get(dev, NULL); + struct clk *clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(clk)) return PTR_ERR(clk); - ret = clk_prepare_enable(clk); - if (ret) - return ret; - - ret = devm_add_action_or_reset(dev, adis16475_disable_clk, clk); - if (ret) - return ret; - st->clk_freq = clk_get_rate(clk); if (st->clk_freq < sync->min_rate || st->clk_freq > sync->max_rate) { From 21a60fce89c63cc674910d3dbb12177366f41643 Mon Sep 17 00:00:00 2001 From: Crt Mori Date: Mon, 8 Aug 2022 16:49:08 +0200 Subject: [PATCH 082/142] iio: temperature: mlx90632 Add supply regulator to sensor Provide possibility to toggle power supply to the sensor so that user can optimize their setup and not have the sensor constantly powered. Signed-off-by: Crt Mori Link: https://lore.kernel.org/r/20220808144908.1559069-1-cmo@melexis.com Signed-off-by: Jonathan Cameron --- drivers/iio/temperature/mlx90632.c | 61 +++++++++++++++++++++++++++--- 1 file changed, 56 insertions(+), 5 deletions(-) diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c index 7ee7ff8047a4..549c0ab5c2be 100644 --- a/drivers/iio/temperature/mlx90632.c +++ b/drivers/iio/temperature/mlx90632.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -128,6 +129,7 @@ * calculations * @object_ambient_temperature: Ambient temperature at object (might differ of * the ambient temperature of sensor. + * @regulator: Regulator of the device */ struct mlx90632_data { struct i2c_client *client; @@ -136,6 +138,7 @@ struct mlx90632_data { u16 emissivity; u8 mtyp; u32 object_ambient_temperature; + struct regulator *regulator; }; static const struct regmap_range mlx90632_volatile_reg_range[] = { @@ -207,6 +210,15 @@ static s32 mlx90632_pwr_continuous(struct regmap *regmap) MLX90632_PWR_STATUS_CONTINUOUS); } +/** + * mlx90632_reset_delay() - Give the mlx90632 some time to reset properly + * If this is not done, the following I2C command(s) will not be accepted. + */ +static void mlx90632_reset_delay(void) +{ + usleep_range(150, 200); +} + /** * mlx90632_perform_measurement() - Trigger and retrieve current measurement cycle * @data: pointer to mlx90632_data object containing regmap information @@ -248,11 +260,7 @@ static int mlx90632_set_meas_type(struct regmap *regmap, u8 type) if (ret < 0) return ret; - /* - * Give the mlx90632 some time to reset properly before sending a new I2C command - * if this is not done, the following I2C command(s) will not be accepted. - */ - usleep_range(150, 200); + mlx90632_reset_delay(); ret = regmap_write_bits(regmap, MLX90632_REG_CONTROL, (MLX90632_CFG_MTYP_MASK | MLX90632_CFG_PWR_MASK), @@ -841,6 +849,32 @@ static int mlx90632_wakeup(struct mlx90632_data *data) return mlx90632_pwr_continuous(data->regmap); } +static void mlx90632_disable_regulator(void *_data) +{ + struct mlx90632_data *data = _data; + int ret; + + ret = regulator_disable(data->regulator); + if (ret < 0) + dev_err(regmap_get_device(data->regmap), + "Failed to disable power regulator: %d\n", ret); +} + +static int mlx90632_enable_regulator(struct mlx90632_data *data) +{ + int ret; + + ret = regulator_enable(data->regulator); + if (ret < 0) { + dev_err(regmap_get_device(data->regmap), "Failed to enable power regulator!\n"); + return ret; + } + + mlx90632_reset_delay(); + + return ret; +} + static int mlx90632_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -876,6 +910,23 @@ static int mlx90632_probe(struct i2c_client *client, indio_dev->channels = mlx90632_channels; indio_dev->num_channels = ARRAY_SIZE(mlx90632_channels); + mlx90632->regulator = devm_regulator_get(&client->dev, "vdd"); + if (IS_ERR(mlx90632->regulator)) + return dev_err_probe(&client->dev, PTR_ERR(mlx90632->regulator), + "failed to get vdd regulator"); + + ret = mlx90632_enable_regulator(mlx90632); + if (ret < 0) + return ret; + + ret = devm_add_action_or_reset(&client->dev, mlx90632_disable_regulator, + mlx90632); + if (ret < 0) { + dev_err(&client->dev, "Failed to setup regulator cleanup action %d\n", + ret); + return ret; + } + ret = mlx90632_wakeup(mlx90632); if (ret < 0) { dev_err(&client->dev, "Wakeup failed: %d\n", ret); From ef6d997667cbb964dbc27339fefbe65ceabea13a Mon Sep 17 00:00:00 2001 From: Crt Mori Date: Mon, 8 Aug 2022 16:49:36 +0200 Subject: [PATCH 083/142] dt-bindings: iio: mlx90632 Add supply regulator documentation Document the newly added vdd supply option. Signed-off-by: Crt Mori Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220808144936.1559158-1-cmo@melexis.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/temperature/melexis,mlx90632.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90632.yaml b/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90632.yaml index b547ddcd544a..4a55e7f25ae7 100644 --- a/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90632.yaml +++ b/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90632.yaml @@ -35,6 +35,9 @@ properties: maxItems: 1 description: Default is 0x3a, but can be reprogrammed. + vdd-supply: + description: provide VDD power to the sensor. + required: - compatible - reg @@ -50,6 +53,7 @@ examples: temp-sensor@3a { compatible = "melexis,mlx90632"; reg = <0x3a>; + vdd-supply = <&ldo4_reg>; }; }; ... From e137fafc8985cf152a4bb6f18ae83ebb06816df1 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:06 +0200 Subject: [PATCH 084/142] iio: magnetometer: yas530: Change data type of hard_offsets to signed The "hard_offsets" are currently unsigned u8 but they should be signed as they can get negative. They are signed in function yas5xx_meaure_offsets() and in the Yamaha drivers [1][2]. [1] https://github.com/NovaFusion/android_kernel_samsung_golden/blob/cm-12.1/drivers/sensor/compass/yas.h#L156 [2] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas532.c#L91 Fixes: de8860b1ed47 ("iio: magnetometer: Add driver for Yamaha YAS530") Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/40f052bf6491457d0c5c0ed4c3534dc6fa251c3c.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index aeaa4da6923b..d1f16729c60e 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -132,7 +132,7 @@ struct yas5xx { unsigned int version; char name[16]; struct yas5xx_calibration calibration; - u8 hard_offsets[3]; + s8 hard_offsets[3]; struct iio_mount_matrix orientation; struct regmap *map; struct regulator_bulk_data regs[2]; From 4efdfbc16cceffbcb29e53a5be55d83a4c76a9c0 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:07 +0200 Subject: [PATCH 085/142] iio: magnetometer: yas530: Change range of data in volatile register In function yas5xx_volatile_reg(), register "YAS5XX_MEASURE_DATA + 8" shouldn't be volatile as we count from 0 to 7 here. Instead of lowering the number from 8 to 7, the operator "<=" is replaced by "<". The size of the measure data array is 8, therefore it's more natural to use 8 as a constant. This change is of low importance as the "+ 8" register isn't called. Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/dabba10feb80171350525ac874f944076c46e084.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index d1f16729c60e..76bff4818461 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -527,7 +527,7 @@ static bool yas5xx_volatile_reg(struct device *dev, unsigned int reg) { return reg == YAS5XX_ACTUATE_INIT_COIL || reg == YAS5XX_MEASURE || - (reg >= YAS5XX_MEASURE_DATA && reg <= YAS5XX_MEASURE_DATA + 8); + (reg >= YAS5XX_MEASURE_DATA && reg < YAS5XX_MEASURE_DATA + 8); } /* TODO: enable regmap cache, using mark dirty and sync at runtime resume */ From 413cf691633c985c3b49d005aa07b0e9c70c14a1 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:08 +0200 Subject: [PATCH 086/142] iio: magnetometer: yas530: Correct scaling of magnetic axes Looks like YAS530 raw values return picotesla and YAS532 nanotesla. Adapt comments and scaling. Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/053ab05cb9a0f6b0536ab5e0de57009f513c6f81.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 31 ++++++++++++++++-------- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 76bff4818461..199d83013e6f 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -310,8 +310,6 @@ static s32 yas5xx_linearize(struct yas5xx *yas5xx, u16 val, int axis) * @yo: Y axis out * @zo: Z axis out * @return: 0 on success or error code - * - * Returned values are in nanotesla according to some code. */ static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo) { @@ -417,14 +415,27 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, *val = 1; return IIO_VAL_INT; } - /* - * The axis values are in nanotesla according to the vendor - * drivers, but is clearly in microtesla according to - * experiments. Since 1 uT = 0.01 Gauss, we need to divide - * by 100000000 (10^8) to get to Gauss from the raw value. - */ - *val = 1; - *val2 = 100000000; + switch (yas5xx->devid) { + case YAS530_DEVICE_ID: + /* + * Raw values of YAS530 are in picotesla. Divide by + * 100000000 (10^8) to get Gauss. + */ + *val = 1; + *val2 = 100000000; + break; + case YAS532_DEVICE_ID: + /* + * Raw values of YAS532 are in nanotesla. Divide by + * 100000 (10^5) to get Gauss. + */ + *val = 1; + *val2 = 100000; + break; + default: + dev_err(yas5xx->dev, "unknown device type\n"); + return -EINVAL; + } return IIO_VAL_FRACTIONAL; default: /* Unknown request */ From 8239f904f97c94b25a9983aa243090bb393abe81 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:09 +0200 Subject: [PATCH 087/142] iio: magnetometer: yas530: Correct temperature handling The raw temperature value is a number of counts from a certain starting point. The resolution of the temperature counts is different for the YAS variants. Temperature compensation for YAS532 version AC seems to be handled differently. It uses the deviation from 20 degree Celsius [1] whereas YAS530 and older versions of YAS532 apply solely the t value as a multiplier [2][3]. In funtion yas5xx_read_raw(), add case IIO_CHAN_INFO_PROCESSED. Remove scale of temperature as this isn't applied. Additionally correct sign of temperature channel in iio_chan_spec. It's already defined that way in the yas5xx_get_measure() function. [1] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas532.c#L442 [2] https://github.com/NovaFusion/android_kernel_samsung_golden/blob/cm-12.1/drivers/sensor/compass/yas_mag_driver-yas530.c#L881-L883 [3] https://github.com/LineageOS/android_kernel_samsung_msm8930-common/blob/lineage-18.1/drivers/sensors/geomagnetic/yas_mag_driver-yas53x.c#L856-L858 Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/eb45f328c7a81eb622c6a8cfc5c468ea58bbdace.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 99 ++++++++++++++++++------ 1 file changed, 76 insertions(+), 23 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 199d83013e6f..6296ea3140ef 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -77,6 +77,7 @@ #define YAS530_DATA_BITS 12 #define YAS530_DATA_CENTER BIT(YAS530_DATA_BITS - 1) #define YAS530_DATA_OVERFLOW (BIT(YAS530_DATA_BITS) - 1) +#define YAS530_20DEGREES 182 /* Counts starting at -62 °C */ #define YAS532_DEVICE_ID 0x02 /* YAS532/YAS533 (MS-3R/F) */ #define YAS532_VERSION_AB 0 /* YAS532/533 AB (MS-3R/F AB) */ @@ -88,7 +89,7 @@ #define YAS532_DATA_BITS 13 #define YAS532_DATA_CENTER BIT(YAS532_DATA_BITS - 1) #define YAS532_DATA_OVERFLOW (BIT(YAS532_DATA_BITS) - 1) -#define YAS532_20DEGREES 390 /* Looks like Kelvin */ +#define YAS532_20DEGREES 390 /* Counts starting at -50 °C */ /* These variant IDs are known from code dumps */ #define YAS537_DEVICE_ID 0x07 /* YAS537 (MS-3T) */ @@ -314,7 +315,7 @@ static s32 yas5xx_linearize(struct yas5xx *yas5xx, u16 val, int axis) static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo) { struct yas5xx_calibration *c = &yas5xx->calibration; - u16 t, x, y1, y2; + u16 t_ref, t, x, y1, y2; /* These are "signed x, signed y1 etc */ s32 sx, sy1, sy2, sy, sz; int ret; @@ -329,16 +330,46 @@ static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, sy1 = yas5xx_linearize(yas5xx, y1, 1); sy2 = yas5xx_linearize(yas5xx, y2, 2); - /* - * Temperature compensation for x, y1, y2 respectively: - * - * Cx * t - * x' = x - ------ - * 100 - */ - sx = sx - (c->Cx * t) / 100; - sy1 = sy1 - (c->Cy1 * t) / 100; - sy2 = sy2 - (c->Cy2 * t) / 100; + /* Set the temperature reference value (unit: counts) */ + switch (yas5xx->devid) { + case YAS530_DEVICE_ID: + t_ref = YAS530_20DEGREES; + break; + case YAS532_DEVICE_ID: + t_ref = YAS532_20DEGREES; + break; + default: + dev_err(yas5xx->dev, "unknown device type\n"); + return -EINVAL; + } + + /* Temperature compensation for x, y1, y2 respectively */ + if (yas5xx->devid == YAS532_DEVICE_ID && + yas5xx->version == YAS532_VERSION_AC) { + /* + * YAS532 version AC uses the temperature deviation as a + * multiplier. + * + * Cx * (t - t_ref) + * x' = x - ---------------- + * 100 + */ + sx = sx - (c->Cx * (t - t_ref)) / 100; + sy1 = sy1 - (c->Cy1 * (t - t_ref)) / 100; + sy2 = sy2 - (c->Cy2 * (t - t_ref)) / 100; + } else { + /* + * YAS530 and YAS532 version AB use solely the t value as a + * multiplier. + * + * Cx * t + * x' = x - ------ + * 100 + */ + sx = sx - (c->Cx * t) / 100; + sy1 = sy1 - (c->Cy1 * t) / 100; + sy2 = sy2 - (c->Cy2 * t) / 100; + } /* * Break y1 and y2 into y and z, y1 and y2 are apparently encoding @@ -347,11 +378,37 @@ static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, sy = sy1 - sy2; sz = -sy1 - sy2; - /* - * FIXME: convert to Celsius? Just guessing this is given - * as 1/10:s of degrees so multiply by 100 to get millicentigrades. - */ - *to = t * 100; + /* Process temperature readout */ + switch (yas5xx->devid) { + case YAS530_DEVICE_ID: + /* + * Raw temperature value t is the number of counts starting + * at -62 °C. Reference value t_ref is the number of counts + * between -62 °C and 20 °C (82 °C range). + * + * Temperature in °C would be (82 / t_ref * t) - 62. + * + * Contrary to this, perform multiplication first and division + * second due to calculating with integers. + * + * To get a nicer result, calculate with 1/10:s degrees Celsius + * and finally multiply by 100 to return millidegrees Celsius. + */ + *to = ((820 * t / t_ref) - 620) * 100; + break; + case YAS532_DEVICE_ID: + /* + * Actually same procedure for YAS532 but the starting point is + * at -50 °C. Reference value t_ref is the number of counts + * between -50 °C and 20 °C (70 °C range). + */ + *to = ((700 * t / t_ref) - 500) * 100; + break; + default: + dev_err(yas5xx->dev, "unknown device type\n"); + return -EINVAL; + } + /* * Calibrate [x,y,z] with some formulas like this: * @@ -384,6 +441,7 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, int ret; switch (mask) { + case IIO_CHAN_INFO_PROCESSED: case IIO_CHAN_INFO_RAW: pm_runtime_get_sync(yas5xx->dev); ret = yas5xx_get_measure(yas5xx, &t, &x, &y, &z); @@ -410,11 +468,6 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, } return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - if (chan->address == 0) { - /* Temperature is unscaled */ - *val = 1; - return IIO_VAL_INT; - } switch (yas5xx->devid) { case YAS530_DEVICE_ID: /* @@ -516,7 +569,7 @@ static const struct iio_chan_spec yas5xx_channels[] = { .address = 0, .scan_index = 0, .scan_type = { - .sign = 'u', + .sign = 's', .realbits = 32, .storagebits = 32, .endianness = IIO_CPU, From 0ca09faadef13bd6f7a59fa9f6858ccb88dac539 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:10 +0200 Subject: [PATCH 088/142] iio: magnetometer: yas530: Change data type of calibration coefficients This is a preparation for adding YAS537 variant. YAS537 uses other data types on the calibration coefficients [1] than YAS530 [2] and YAS532 [3]. On YAS537, at least for a4 and a7 this could matter because 8-bit unsigned data from the register gets stored into a signed data type, therefore this should be 8-bit as well. For YAS530/532, on the other hand, it doesn't seem to matter. The size of a2-a9 and k is smaller than 8-bit at extraction, also the applied math is low. And Cx/Cy1/Cy2, now being defined as signed 16-bit, are extracted as unsigned 8-bit and undergo only minor math. [1] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas537.c#L76-L78 [2] https://github.com/NovaFusion/android_kernel_samsung_golden/blob/cm-12.1/drivers/sensor/compass/yas_mag_driver-yas530.c#L526-L527 [3] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas532.c#L76-L77 Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/f1e53bd6672aebe59f9b236b41374482edf888f8.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 6296ea3140ef..a9d7cf3ad77f 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -103,9 +103,11 @@ struct yas5xx_calibration { s32 r[3]; u32 f[3]; /* Temperature compensation calibration */ - s32 Cx, Cy1, Cy2; + s16 Cx, Cy1, Cy2; /* Misc calibration coefficients */ - s32 a2, a3, a4, a5, a6, a7, a8, a9, k; + s8 a2, a3, a4, a6, a7, a8; + s16 a5, a9; + u8 k; /* clock divider */ u8 dck; }; From 6e3bfa97c5b8a9ea702ad0b8a28e703b6d561ac1 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:11 +0200 Subject: [PATCH 089/142] iio: magnetometer: yas530: Rename functions and registers This is a preparation for adding the YAS537 variant. Functions that are used only by YAS530, YAS532 and YAS533 are renamed from yas5xx to yas530. Same for the registers. To avoid part listing in function and registers names, the name of the first variant is used. Where appropriate, comments were added that these functions are used by more than one variant. Functions that will be used by all variants including YAS537 remain in the naming scheme yas5xx. Or YAS5XX for registers, respectively. Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/344d3b2f5e050eab79ce9962c24781486774d9fb.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 126 +++++++++++++---------- 1 file changed, 70 insertions(+), 56 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index a9d7cf3ad77f..40cd6bbc9952 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -40,20 +40,22 @@ #include -/* This register map covers YAS530 and YAS532 but differs in YAS 537 and YAS539 */ +/* Commonly used registers */ #define YAS5XX_DEVICE_ID 0x80 -#define YAS5XX_ACTUATE_INIT_COIL 0x81 -#define YAS5XX_MEASURE 0x82 -#define YAS5XX_CONFIG 0x83 -#define YAS5XX_MEASURE_INTERVAL 0x84 -#define YAS5XX_OFFSET_X 0x85 /* [-31 .. 31] */ -#define YAS5XX_OFFSET_Y1 0x86 /* [-31 .. 31] */ -#define YAS5XX_OFFSET_Y2 0x87 /* [-31 .. 31] */ -#define YAS5XX_TEST1 0x88 -#define YAS5XX_TEST2 0x89 -#define YAS5XX_CAL 0x90 #define YAS5XX_MEASURE_DATA 0xB0 +/* These registers are used by YAS530, YAS532 and YAS533 */ +#define YAS530_ACTUATE_INIT_COIL 0x81 +#define YAS530_MEASURE 0x82 +#define YAS530_CONFIG 0x83 +#define YAS530_MEASURE_INTERVAL 0x84 +#define YAS530_OFFSET_X 0x85 /* [-31 .. 31] */ +#define YAS530_OFFSET_Y1 0x86 /* [-31 .. 31] */ +#define YAS530_OFFSET_Y2 0x87 /* [-31 .. 31] */ +#define YAS530_TEST1 0x88 +#define YAS530_TEST2 0x89 +#define YAS530_CAL 0x90 + /* Bits in the YAS5xx config register */ #define YAS5XX_CONFIG_INTON BIT(0) /* Interrupt on? */ #define YAS5XX_CONFIG_INTHACT BIT(1) /* Interrupt active high? */ @@ -182,15 +184,17 @@ static u16 yas532_extract_axis(u8 *data) } /** - * yas5xx_measure() - Make a measure from the hardware + * yas530_measure() - Make a measure from the hardware * @yas5xx: The device state * @t: the raw temperature measurement * @x: the raw x axis measurement * @y1: the y1 axis measurement * @y2: the y2 axis measurement * @return: 0 on success or error code + * + * Used by YAS530, YAS532 and YAS533. */ -static int yas5xx_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2) +static int yas530_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2) { unsigned int busy; u8 data[8]; @@ -198,7 +202,7 @@ static int yas5xx_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y u16 val; mutex_lock(&yas5xx->lock); - ret = regmap_write(yas5xx->map, YAS5XX_MEASURE, YAS5XX_MEASURE_START); + ret = regmap_write(yas5xx->map, YAS530_MEASURE, YAS5XX_MEASURE_START); if (ret < 0) goto out_unlock; @@ -264,7 +268,8 @@ out_unlock: return ret; } -static s32 yas5xx_linearize(struct yas5xx *yas5xx, u16 val, int axis) +/* Used by YAS530, YAS532 and YAS533 */ +static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis) { struct yas5xx_calibration *c = &yas5xx->calibration; static const s32 yas532ac_coef[] = { @@ -306,15 +311,17 @@ static s32 yas5xx_linearize(struct yas5xx *yas5xx, u16 val, int axis) } /** - * yas5xx_get_measure() - Measure a sample of all axis and process + * yas530_get_measure() - Measure a sample of all axis and process * @yas5xx: The device state * @to: Temperature out * @xo: X axis out * @yo: Y axis out * @zo: Z axis out * @return: 0 on success or error code + * + * Used by YAS530, YAS532 and YAS533. */ -static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo) +static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo) { struct yas5xx_calibration *c = &yas5xx->calibration; u16 t_ref, t, x, y1, y2; @@ -323,14 +330,14 @@ static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, int ret; /* We first get raw data that needs to be translated to [x,y,z] */ - ret = yas5xx_measure(yas5xx, &t, &x, &y1, &y2); + ret = yas530_measure(yas5xx, &t, &x, &y1, &y2); if (ret) return ret; /* Do some linearization if available */ - sx = yas5xx_linearize(yas5xx, x, 0); - sy1 = yas5xx_linearize(yas5xx, y1, 1); - sy2 = yas5xx_linearize(yas5xx, y2, 2); + sx = yas530_linearize(yas5xx, x, 0); + sy1 = yas530_linearize(yas5xx, y1, 1); + sy2 = yas530_linearize(yas5xx, y2, 2); /* Set the temperature reference value (unit: counts) */ switch (yas5xx->devid) { @@ -446,7 +453,7 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_PROCESSED: case IIO_CHAN_INFO_RAW: pm_runtime_get_sync(yas5xx->dev); - ret = yas5xx_get_measure(yas5xx, &t, &x, &y, &z); + ret = yas530_get_measure(yas5xx, &t, &x, &y, &z); pm_runtime_mark_last_busy(yas5xx->dev); pm_runtime_put_autosuspend(yas5xx->dev); if (ret) @@ -505,7 +512,7 @@ static void yas5xx_fill_buffer(struct iio_dev *indio_dev) int ret; pm_runtime_get_sync(yas5xx->dev); - ret = yas5xx_get_measure(yas5xx, &t, &x, &y, &z); + ret = yas530_get_measure(yas5xx, &t, &x, &y, &z); pm_runtime_mark_last_busy(yas5xx->dev); pm_runtime_put_autosuspend(yas5xx->dev); if (ret) { @@ -591,8 +598,8 @@ static const struct iio_info yas5xx_info = { static bool yas5xx_volatile_reg(struct device *dev, unsigned int reg) { - return reg == YAS5XX_ACTUATE_INIT_COIL || - reg == YAS5XX_MEASURE || + return reg == YAS530_ACTUATE_INIT_COIL || + reg == YAS530_MEASURE || (reg >= YAS5XX_MEASURE_DATA && reg < YAS5XX_MEASURE_DATA + 8); } @@ -605,11 +612,13 @@ static const struct regmap_config yas5xx_regmap_config = { }; /** - * yas53x_extract_calibration() - extracts the a2-a9 and k calibration + * yas530_extract_calibration() - extracts the a2-a9 and k calibration * @data: the bitfield to use * @c: the calibration to populate + * + * Used by YAS530, YAS532 and YAS533. */ -static void yas53x_extract_calibration(u8 *data, struct yas5xx_calibration *c) +static void yas530_extract_calibration(u8 *data, struct yas5xx_calibration *c) { u64 val = get_unaligned_be64(data); @@ -647,12 +656,12 @@ static int yas530_get_calibration_data(struct yas5xx *yas5xx) int ret; /* Dummy read, first read is ALWAYS wrong */ - ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data)); + ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data)); if (ret) return ret; /* Actual calibration readout */ - ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data)); + ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data)); if (ret) return ret; dev_dbg(yas5xx->dev, "calibration data: %*ph\n", 14, data); @@ -664,7 +673,7 @@ static int yas530_get_calibration_data(struct yas5xx *yas5xx) c->Cx = data[0] * 6 - 768; c->Cy1 = data[1] * 6 - 768; c->Cy2 = data[2] * 6 - 768; - yas53x_extract_calibration(&data[3], c); + yas530_extract_calibration(&data[3], c); /* * Extract linearization: @@ -695,11 +704,11 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) int ret; /* Dummy read, first read is ALWAYS wrong */ - ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data)); + ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data)); if (ret) return ret; /* Actual calibration readout */ - ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data)); + ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data)); if (ret) return ret; dev_dbg(yas5xx->dev, "calibration data: %*ph\n", 14, data); @@ -718,7 +727,7 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) c->Cx = data[0] * 10 - 1280; c->Cy1 = data[1] * 10 - 1280; c->Cy2 = data[2] * 10 - 1280; - yas53x_extract_calibration(&data[3], c); + yas530_extract_calibration(&data[3], c); /* * Extract linearization: * Linearization layout in the 32 bits at byte 10: @@ -741,7 +750,8 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) return 0; } -static void yas5xx_dump_calibration(struct yas5xx *yas5xx) +/* Used by YAS530, YAS532 and YAS533 */ +static void yas530_dump_calibration(struct yas5xx *yas5xx) { struct yas5xx_calibration *c = &yas5xx->calibration; @@ -764,20 +774,22 @@ static void yas5xx_dump_calibration(struct yas5xx *yas5xx) dev_dbg(yas5xx->dev, "dck = %d\n", c->dck); } -static int yas5xx_set_offsets(struct yas5xx *yas5xx, s8 ox, s8 oy1, s8 oy2) +/* Used by YAS530, YAS532 and YAS533 */ +static int yas530_set_offsets(struct yas5xx *yas5xx, s8 ox, s8 oy1, s8 oy2) { int ret; - ret = regmap_write(yas5xx->map, YAS5XX_OFFSET_X, ox); + ret = regmap_write(yas5xx->map, YAS530_OFFSET_X, ox); if (ret) return ret; - ret = regmap_write(yas5xx->map, YAS5XX_OFFSET_Y1, oy1); + ret = regmap_write(yas5xx->map, YAS530_OFFSET_Y1, oy1); if (ret) return ret; - return regmap_write(yas5xx->map, YAS5XX_OFFSET_Y2, oy2); + return regmap_write(yas5xx->map, YAS530_OFFSET_Y2, oy2); } -static s8 yas5xx_adjust_offset(s8 old, int bit, u16 center, u16 measure) +/* Used by YAS530, YAS532 and YAS533 */ +static s8 yas530_adjust_offset(s8 old, int bit, u16 center, u16 measure) { if (measure > center) return old + BIT(bit); @@ -786,7 +798,8 @@ static s8 yas5xx_adjust_offset(s8 old, int bit, u16 center, u16 measure) return old; } -static int yas5xx_meaure_offsets(struct yas5xx *yas5xx) +/* Used by YAS530, YAS532 and YAS533 */ +static int yas530_measure_offsets(struct yas5xx *yas5xx) { int ret; u16 center; @@ -795,7 +808,7 @@ static int yas5xx_meaure_offsets(struct yas5xx *yas5xx) int i; /* Actuate the init coil and measure offsets */ - ret = regmap_write(yas5xx->map, YAS5XX_ACTUATE_INIT_COIL, 0); + ret = regmap_write(yas5xx->map, YAS530_ACTUATE_INIT_COIL, 0); if (ret) return ret; @@ -829,26 +842,26 @@ static int yas5xx_meaure_offsets(struct yas5xx *yas5xx) oy2 = 0; for (i = 4; i >= 0; i--) { - ret = yas5xx_set_offsets(yas5xx, ox, oy1, oy2); + ret = yas530_set_offsets(yas5xx, ox, oy1, oy2); if (ret) return ret; - ret = yas5xx_measure(yas5xx, &t, &x, &y1, &y2); + ret = yas530_measure(yas5xx, &t, &x, &y1, &y2); if (ret) return ret; dev_dbg(yas5xx->dev, "measurement %d: x=%d, y1=%d, y2=%d\n", 5-i, x, y1, y2); - ox = yas5xx_adjust_offset(ox, i, center, x); - oy1 = yas5xx_adjust_offset(oy1, i, center, y1); - oy2 = yas5xx_adjust_offset(oy2, i, center, y2); + ox = yas530_adjust_offset(ox, i, center, x); + oy1 = yas530_adjust_offset(oy1, i, center, y1); + oy2 = yas530_adjust_offset(oy2, i, center, y2); } /* Needed for calibration algorithm */ yas5xx->hard_offsets[0] = ox; yas5xx->hard_offsets[1] = oy1; yas5xx->hard_offsets[2] = oy2; - ret = yas5xx_set_offsets(yas5xx, ox, oy1, oy2); + ret = yas530_set_offsets(yas5xx, ox, oy1, oy2); if (ret) return ret; @@ -857,27 +870,28 @@ static int yas5xx_meaure_offsets(struct yas5xx *yas5xx) return 0; } -static int yas5xx_power_on(struct yas5xx *yas5xx) +/* Used by YAS530, YAS532 and YAS533 */ +static int yas530_power_on(struct yas5xx *yas5xx) { unsigned int val; int ret; /* Zero the test registers */ - ret = regmap_write(yas5xx->map, YAS5XX_TEST1, 0); + ret = regmap_write(yas5xx->map, YAS530_TEST1, 0); if (ret) return ret; - ret = regmap_write(yas5xx->map, YAS5XX_TEST2, 0); + ret = regmap_write(yas5xx->map, YAS530_TEST2, 0); if (ret) return ret; /* Set up for no interrupts, calibrated clock divider */ val = FIELD_PREP(YAS5XX_CONFIG_CCK_MASK, yas5xx->calibration.dck); - ret = regmap_write(yas5xx->map, YAS5XX_CONFIG, val); + ret = regmap_write(yas5xx->map, YAS530_CONFIG, val); if (ret) return ret; /* Measure interval 0 (back-to-back?) */ - return regmap_write(yas5xx->map, YAS5XX_MEASURE_INTERVAL, 0); + return regmap_write(yas5xx->map, YAS530_MEASURE_INTERVAL, 0); } static int yas5xx_probe(struct i2c_client *i2c, @@ -959,11 +973,11 @@ static int yas5xx_probe(struct i2c_client *i2c, goto assert_reset; } - yas5xx_dump_calibration(yas5xx); - ret = yas5xx_power_on(yas5xx); + yas530_dump_calibration(yas5xx); + ret = yas530_power_on(yas5xx); if (ret) goto assert_reset; - ret = yas5xx_meaure_offsets(yas5xx); + ret = yas530_measure_offsets(yas5xx); if (ret) goto assert_reset; @@ -1062,7 +1076,7 @@ static int yas5xx_runtime_resume(struct device *dev) usleep_range(31000, 40000); gpiod_set_value_cansleep(yas5xx->reset, 0); - ret = yas5xx_power_on(yas5xx); + ret = yas530_power_on(yas5xx); if (ret) { dev_err(dev, "cannot power on\n"); goto out_reset; From bdef8dcfbb94dc16e9750cd109bb9b7d8edfa1ca Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:12 +0200 Subject: [PATCH 090/142] iio: magnetometer: yas530: Move printk %*ph parameters out from stack Use less stack by modifying %*ph parameters. While at it, in the function yas530_get_calibration_data(), the debug dump was extended to 16 elements as this is the size of the calibration data array of YAS530. Suggested-by: Andy Shevchenko Signed-off-by: Jakob Hauser Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/93b50c20adb1b2acb4cddb1ab25755070edd7c07.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 40cd6bbc9952..beb48f3a959c 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -664,7 +664,7 @@ static int yas530_get_calibration_data(struct yas5xx *yas5xx) ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data)); if (ret) return ret; - dev_dbg(yas5xx->dev, "calibration data: %*ph\n", 14, data); + dev_dbg(yas5xx->dev, "calibration data: %16ph\n", data); add_device_randomness(data, sizeof(data)); yas5xx->version = data[15] & GENMASK(1, 0); @@ -711,7 +711,7 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data)); if (ret) return ret; - dev_dbg(yas5xx->dev, "calibration data: %*ph\n", 14, data); + dev_dbg(yas5xx->dev, "calibration data: %14ph\n", data); /* Sanity check, is this all zeroes? */ if (memchr_inv(data, 0x00, 13) == NULL) { From 92d9c05ca7324aed6695b53d3ce11b3e1387f470 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:13 +0200 Subject: [PATCH 091/142] iio: magnetometer: yas530: Apply documentation and style fixes This commit gathers several minor changes. In the device examples, "Xiaomi" is too generic, specific devices should be listed here. E.g. Xiaomi Redmi 2 seems to have YAS537 but it's not fully clear if this applies to all its variants. Samsung Galaxy S7 is often quoted in conjunction with YAS537. Removed defines for device IDs of YAS537 and YAS539, they are not needed so far. Signed-off-by: Jakob Hauser Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/300e394a76eb30fa031ecb69b594e9f9a70dac42.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index beb48f3a959c..f81868de5995 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -10,7 +10,7 @@ * (YAS534 is a magnetic switch, not handled) * YAS535 MS-6C * YAS536 MS-3W - * YAS537 MS-3T (2015 Samsung Galaxy S6, Note 5, Xiaomi) + * YAS537 MS-3T (2015 Samsung Galaxy S6, Note 5, Galaxy S7) * YAS539 MS-3S (2018 Samsung Galaxy A7 SM-A750FN) * * Code functions found in the MPU3050 YAS530 and YAS532 drivers @@ -93,10 +93,6 @@ #define YAS532_DATA_OVERFLOW (BIT(YAS532_DATA_BITS) - 1) #define YAS532_20DEGREES 390 /* Counts starting at -50 °C */ -/* These variant IDs are known from code dumps */ -#define YAS537_DEVICE_ID 0x07 /* YAS537 (MS-3T) */ -#define YAS539_DEVICE_ID 0x08 /* YAS539 (MS-3S) */ - /* Turn off device regulators etc after 5 seconds of inactivity */ #define YAS5XX_AUTOSUSPEND_DELAY_MS 5000 @@ -325,7 +321,7 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, { struct yas5xx_calibration *c = &yas5xx->calibration; u16 t_ref, t, x, y1, y2; - /* These are "signed x, signed y1 etc */ + /* These are signed x, signed y1 etc */ s32 sx, sy1, sy2, sy, sz; int ret; @@ -666,7 +662,10 @@ static int yas530_get_calibration_data(struct yas5xx *yas5xx) return ret; dev_dbg(yas5xx->dev, "calibration data: %16ph\n", data); + /* Contribute calibration data to the input pool for kernel entropy */ add_device_randomness(data, sizeof(data)); + + /* Extract version */ yas5xx->version = data[15] & GENMASK(1, 0); /* Extract the calibration from the bitfield */ @@ -693,6 +692,7 @@ static int yas530_get_calibration_data(struct yas5xx *yas5xx) c->r[0] = sign_extend32(FIELD_GET(GENMASK(28, 23), val), 5); c->r[1] = sign_extend32(FIELD_GET(GENMASK(20, 15), val), 5); c->r[2] = sign_extend32(FIELD_GET(GENMASK(12, 7), val), 5); + return 0; } @@ -714,12 +714,12 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) dev_dbg(yas5xx->dev, "calibration data: %14ph\n", data); /* Sanity check, is this all zeroes? */ - if (memchr_inv(data, 0x00, 13) == NULL) { - if (!(data[13] & BIT(7))) - dev_warn(yas5xx->dev, "calibration is blank!\n"); - } + if (!memchr_inv(data, 0x00, 13) && !(data[13] & BIT(7))) + dev_warn(yas5xx->dev, "calibration is blank!\n"); + /* Contribute calibration data to the input pool for kernel entropy */ add_device_randomness(data, sizeof(data)); + /* Only one bit of version info reserved here as far as we know */ yas5xx->version = data[13] & BIT(0); @@ -728,6 +728,7 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) c->Cy1 = data[1] * 10 - 1280; c->Cy2 = data[2] * 10 - 1280; yas530_extract_calibration(&data[3], c); + /* * Extract linearization: * Linearization layout in the 32 bits at byte 10: From a70f60e5b6b37e8b9f0967235bf89aebd2d9fbb9 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:14 +0200 Subject: [PATCH 092/142] iio: magnetometer: yas530: Introduce "chip_info" structure Introduce the "chip_info" structure approach for better variant handling. The variant to be used is now chosen by the Device Tree (enum "chip_ids"), not by the chip ID in the register. However, there is a check to make sure they match (using integer "id_check"). Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/57236545107286771d351b95091bf56815d3717d.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 98 ++++++++++++++++++------ 1 file changed, 74 insertions(+), 24 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index f81868de5995..4fe7e8c820c3 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -96,6 +96,12 @@ /* Turn off device regulators etc after 5 seconds of inactivity */ #define YAS5XX_AUTOSUSPEND_DELAY_MS 5000 +enum chip_ids { + yas530, + yas532, + yas533, +}; + struct yas5xx_calibration { /* Linearization calibration x, y1, y2 */ s32 r[3]; @@ -110,12 +116,25 @@ struct yas5xx_calibration { u8 dck; }; +struct yas5xx; + +/** + * struct yas5xx_chip_info - device-specific data and function pointers + * @devid: device ID number + * @product_name: product name of the YAS variant + * @version_names: version letters or namings + */ +struct yas5xx_chip_info { + unsigned int devid; + char *product_name; + char *version_names[2]; +}; + /** * struct yas5xx - state container for the YAS5xx driver * @dev: parent device pointer - * @devid: device ID number + * @chip_info: device-specific data * @version: device version - * @name: device name * @calibration: calibration settings from the OTP storage * @hard_offsets: offsets for each axis measured with initcoil actuated * @orientation: mounting matrix, flipped axis etc @@ -129,9 +148,8 @@ struct yas5xx_calibration { */ struct yas5xx { struct device *dev; - unsigned int devid; + const struct yas5xx_chip_info *chip_info; unsigned int version; - char name[16]; struct yas5xx_calibration calibration; s8 hard_offsets[3]; struct iio_mount_matrix orientation; @@ -192,6 +210,7 @@ static u16 yas532_extract_axis(u8 *data) */ static int yas530_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2) { + const struct yas5xx_chip_info *ci = yas5xx->chip_info; unsigned int busy; u8 data[8]; int ret; @@ -222,7 +241,7 @@ static int yas530_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y mutex_unlock(&yas5xx->lock); - switch (yas5xx->devid) { + switch (ci->devid) { case YAS530_DEVICE_ID: /* * The t value is 9 bits in big endian format @@ -267,6 +286,7 @@ out_unlock: /* Used by YAS530, YAS532 and YAS533 */ static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis) { + const struct yas5xx_chip_info *ci = yas5xx->chip_info; struct yas5xx_calibration *c = &yas5xx->calibration; static const s32 yas532ac_coef[] = { YAS532_VERSION_AC_COEF_X, @@ -276,7 +296,7 @@ static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis) s32 coef; /* Select coefficients */ - switch (yas5xx->devid) { + switch (ci->devid) { case YAS530_DEVICE_ID: if (yas5xx->version == YAS530_VERSION_A) coef = YAS530_VERSION_A_COEF; @@ -319,6 +339,7 @@ static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis) */ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo) { + const struct yas5xx_chip_info *ci = yas5xx->chip_info; struct yas5xx_calibration *c = &yas5xx->calibration; u16 t_ref, t, x, y1, y2; /* These are signed x, signed y1 etc */ @@ -336,7 +357,7 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, sy2 = yas530_linearize(yas5xx, y2, 2); /* Set the temperature reference value (unit: counts) */ - switch (yas5xx->devid) { + switch (ci->devid) { case YAS530_DEVICE_ID: t_ref = YAS530_20DEGREES; break; @@ -349,7 +370,7 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, } /* Temperature compensation for x, y1, y2 respectively */ - if (yas5xx->devid == YAS532_DEVICE_ID && + if (ci->devid == YAS532_DEVICE_ID && yas5xx->version == YAS532_VERSION_AC) { /* * YAS532 version AC uses the temperature deviation as a @@ -384,7 +405,7 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, sz = -sy1 - sy2; /* Process temperature readout */ - switch (yas5xx->devid) { + switch (ci->devid) { case YAS530_DEVICE_ID: /* * Raw temperature value t is the number of counts starting @@ -442,6 +463,7 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, long mask) { struct yas5xx *yas5xx = iio_priv(indio_dev); + const struct yas5xx_chip_info *ci = yas5xx->chip_info; s32 t, x, y, z; int ret; @@ -473,7 +495,7 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, } return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - switch (yas5xx->devid) { + switch (ci->devid) { case YAS530_DEVICE_ID: /* * Raw values of YAS530 are in picotesla. Divide by @@ -802,6 +824,7 @@ static s8 yas530_adjust_offset(s8 old, int bit, u16 center, u16 measure) /* Used by YAS530, YAS532 and YAS533 */ static int yas530_measure_offsets(struct yas5xx *yas5xx) { + const struct yas5xx_chip_info *ci = yas5xx->chip_info; int ret; u16 center; u16 t, x, y1, y2; @@ -814,7 +837,7 @@ static int yas530_measure_offsets(struct yas5xx *yas5xx) return ret; /* When the initcoil is active this should be around the center */ - switch (yas5xx->devid) { + switch (ci->devid) { case YAS530_DEVICE_ID: center = YAS530_DATA_CENTER; break; @@ -895,12 +918,32 @@ static int yas530_power_on(struct yas5xx *yas5xx) return regmap_write(yas5xx->map, YAS530_MEASURE_INTERVAL, 0); } +static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { + [yas530] = { + .devid = YAS530_DEVICE_ID, + .product_name = "YAS530 MS-3E", + .version_names = { "A", "B" }, + }, + [yas532] = { + .devid = YAS532_DEVICE_ID, + .product_name = "YAS532 MS-3R", + .version_names = { "AB", "AC" }, + }, + [yas533] = { + .devid = YAS532_DEVICE_ID, + .product_name = "YAS533 MS-3F", + .version_names = { "AB", "AC" }, + }, +}; + static int yas5xx_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct iio_dev *indio_dev; struct device *dev = &i2c->dev; struct yas5xx *yas5xx; + const struct yas5xx_chip_info *ci; + int id_check; int ret; indio_dev = devm_iio_device_alloc(dev, sizeof(*yas5xx)); @@ -947,33 +990,40 @@ static int yas5xx_probe(struct i2c_client *i2c, goto assert_reset; } - ret = regmap_read(yas5xx->map, YAS5XX_DEVICE_ID, &yas5xx->devid); + yas5xx->chip_info = &yas5xx_chip_info_tbl[id->driver_data]; + ci = yas5xx->chip_info; + + ret = regmap_read(yas5xx->map, YAS5XX_DEVICE_ID, &id_check); if (ret) goto assert_reset; - switch (yas5xx->devid) { + if (id_check != ci->devid) { + ret = dev_err_probe(dev, -ENODEV, + "device ID %02x doesn't match %s\n", + id_check, id->name); + goto assert_reset; + } + + switch (ci->devid) { case YAS530_DEVICE_ID: ret = yas530_get_calibration_data(yas5xx); if (ret) goto assert_reset; - dev_info(dev, "detected YAS530 MS-3E %s", - yas5xx->version ? "B" : "A"); - strncpy(yas5xx->name, "yas530", sizeof(yas5xx->name)); break; case YAS532_DEVICE_ID: ret = yas532_get_calibration_data(yas5xx); if (ret) goto assert_reset; - dev_info(dev, "detected YAS532/YAS533 MS-3R/F %s", - yas5xx->version ? "AC" : "AB"); - strncpy(yas5xx->name, "yas532", sizeof(yas5xx->name)); break; default: ret = -ENODEV; - dev_err(dev, "unhandled device ID %02x\n", yas5xx->devid); + dev_err(dev, "unhandled device ID %02x\n", ci->devid); goto assert_reset; } + dev_info(dev, "detected %s %s\n", ci->product_name, + ci->version_names[yas5xx->version]); + yas530_dump_calibration(yas5xx); ret = yas530_power_on(yas5xx); if (ret) @@ -985,7 +1035,7 @@ static int yas5xx_probe(struct i2c_client *i2c, indio_dev->info = &yas5xx_info; indio_dev->available_scan_masks = yas5xx_scan_masks; indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->name = yas5xx->name; + indio_dev->name = id->name; indio_dev->channels = yas5xx_channels; indio_dev->num_channels = ARRAY_SIZE(yas5xx_channels); @@ -1096,9 +1146,9 @@ static DEFINE_RUNTIME_DEV_PM_OPS(yas5xx_dev_pm_ops, yas5xx_runtime_suspend, yas5xx_runtime_resume, NULL); static const struct i2c_device_id yas5xx_id[] = { - {"yas530", }, - {"yas532", }, - {"yas533", }, + {"yas530", yas530 }, + {"yas532", yas532 }, + {"yas533", yas533 }, {} }; MODULE_DEVICE_TABLE(i2c, yas5xx_id); From dd9bd44f877d8935b7359f083626786cead98adb Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Fri, 12 Aug 2022 23:54:15 +0200 Subject: [PATCH 093/142] iio: magnetometer: yas530: Add volatile registers to "chip_info" Add volatile registers to the "chip_info" structure to ease the handling of different YAS variants. Signed-off-by: Jakob Hauser Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/aeba3877933ba9d2c920b459a9037d9186c15a4f.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 38 ++++++++++++++++++++++-- 1 file changed, 35 insertions(+), 3 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 4fe7e8c820c3..fa317b975f8f 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -102,6 +102,11 @@ enum chip_ids { yas533, }; +static const int yas530_volatile_reg[] = { + YAS530_ACTUATE_INIT_COIL, + YAS530_MEASURE, +}; + struct yas5xx_calibration { /* Linearization calibration x, y1, y2 */ s32 r[3]; @@ -123,11 +128,15 @@ struct yas5xx; * @devid: device ID number * @product_name: product name of the YAS variant * @version_names: version letters or namings + * @volatile_reg: device-specific volatile registers + * @volatile_reg_qty: quantity of device-specific volatile registers */ struct yas5xx_chip_info { unsigned int devid; char *product_name; char *version_names[2]; + const int *volatile_reg; + int volatile_reg_qty; }; /** @@ -616,9 +625,26 @@ static const struct iio_info yas5xx_info = { static bool yas5xx_volatile_reg(struct device *dev, unsigned int reg) { - return reg == YAS530_ACTUATE_INIT_COIL || - reg == YAS530_MEASURE || - (reg >= YAS5XX_MEASURE_DATA && reg < YAS5XX_MEASURE_DATA + 8); + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct yas5xx *yas5xx = iio_priv(indio_dev); + const struct yas5xx_chip_info *ci = yas5xx->chip_info; + int reg_qty; + int i; + + if (reg >= YAS5XX_MEASURE_DATA && reg < YAS5XX_MEASURE_DATA + 8) + return true; + + /* + * YAS versions share different registers on the same address, + * need to differentiate. + */ + reg_qty = ci->volatile_reg_qty; + for (i = 0; i < reg_qty; i++) { + if (reg == ci->volatile_reg[i]) + return true; + } + + return false; } /* TODO: enable regmap cache, using mark dirty and sync at runtime resume */ @@ -923,16 +949,22 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .devid = YAS530_DEVICE_ID, .product_name = "YAS530 MS-3E", .version_names = { "A", "B" }, + .volatile_reg = yas530_volatile_reg, + .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), }, [yas532] = { .devid = YAS532_DEVICE_ID, .product_name = "YAS532 MS-3R", .version_names = { "AB", "AC" }, + .volatile_reg = yas530_volatile_reg, + .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), }, [yas533] = { .devid = YAS532_DEVICE_ID, .product_name = "YAS533 MS-3F", .version_names = { "AB", "AC" }, + .volatile_reg = yas530_volatile_reg, + .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), }, }; From 913fd409668b7fd54db5efd979417a9f94dcc79b Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Sat, 13 Aug 2022 00:05:00 +0200 Subject: [PATCH 094/142] iio: magnetometer: yas530: Add IIO scaling to "chip_info" Add IIO scaling to the "chip_info" structure to ease the handling to different YAS variants. Signed-off-by: Jakob Hauser Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/a12f892633bbee13a8856c231dc793ebbc5d3a03.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 28 ++++++------------------ 1 file changed, 7 insertions(+), 21 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index fa317b975f8f..af5c090098fb 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -130,6 +130,7 @@ struct yas5xx; * @version_names: version letters or namings * @volatile_reg: device-specific volatile registers * @volatile_reg_qty: quantity of device-specific volatile registers + * @scaling_val2: scaling value for IIO_CHAN_INFO_SCALE */ struct yas5xx_chip_info { unsigned int devid; @@ -137,6 +138,7 @@ struct yas5xx_chip_info { char *version_names[2]; const int *volatile_reg; int volatile_reg_qty; + u32 scaling_val2; }; /** @@ -504,27 +506,8 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, } return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - switch (ci->devid) { - case YAS530_DEVICE_ID: - /* - * Raw values of YAS530 are in picotesla. Divide by - * 100000000 (10^8) to get Gauss. - */ - *val = 1; - *val2 = 100000000; - break; - case YAS532_DEVICE_ID: - /* - * Raw values of YAS532 are in nanotesla. Divide by - * 100000 (10^5) to get Gauss. - */ - *val = 1; - *val2 = 100000; - break; - default: - dev_err(yas5xx->dev, "unknown device type\n"); - return -EINVAL; - } + *val = 1; + *val2 = ci->scaling_val2; return IIO_VAL_FRACTIONAL; default: /* Unknown request */ @@ -951,6 +934,7 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .version_names = { "A", "B" }, .volatile_reg = yas530_volatile_reg, .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), + .scaling_val2 = 100000000, /* picotesla to Gauss */ }, [yas532] = { .devid = YAS532_DEVICE_ID, @@ -958,6 +942,7 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .version_names = { "AB", "AC" }, .volatile_reg = yas530_volatile_reg, .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), + .scaling_val2 = 100000, /* nanotesla to Gauss */ }, [yas533] = { .devid = YAS532_DEVICE_ID, @@ -965,6 +950,7 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .version_names = { "AB", "AC" }, .volatile_reg = yas530_volatile_reg, .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), + .scaling_val2 = 100000, /* nanotesla to Gauss */ }, }; From 2d6676ecbe6a39fb1e002b89781e4158e77a784e Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Sat, 13 Aug 2022 00:05:01 +0200 Subject: [PATCH 095/142] iio: magnetometer: yas530: Add temperature calculation to "chip_info" Add temperature calculation to the "chip_info" structure to ease the handling of different YAS variants. Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/1a8bffdb7e807455620a73f2d61981e7f9aab8d5.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 123 ++++++++++------------- 1 file changed, 54 insertions(+), 69 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index af5c090098fb..a5d3f0bff024 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -79,7 +79,6 @@ #define YAS530_DATA_BITS 12 #define YAS530_DATA_CENTER BIT(YAS530_DATA_BITS - 1) #define YAS530_DATA_OVERFLOW (BIT(YAS530_DATA_BITS) - 1) -#define YAS530_20DEGREES 182 /* Counts starting at -62 °C */ #define YAS532_DEVICE_ID 0x02 /* YAS532/YAS533 (MS-3R/F) */ #define YAS532_VERSION_AB 0 /* YAS532/533 AB (MS-3R/F AB) */ @@ -91,7 +90,6 @@ #define YAS532_DATA_BITS 13 #define YAS532_DATA_CENTER BIT(YAS532_DATA_BITS - 1) #define YAS532_DATA_OVERFLOW (BIT(YAS532_DATA_BITS) - 1) -#define YAS532_20DEGREES 390 /* Counts starting at -50 °C */ /* Turn off device regulators etc after 5 seconds of inactivity */ #define YAS5XX_AUTOSUSPEND_DELAY_MS 5000 @@ -131,6 +129,14 @@ struct yas5xx; * @volatile_reg: device-specific volatile registers * @volatile_reg_qty: quantity of device-specific volatile registers * @scaling_val2: scaling value for IIO_CHAN_INFO_SCALE + * @t_ref: number of counts at reference temperature 20 °C + * @min_temp_x10: starting point of temperature counting in 1/10:s degrees Celsius + * + * The "t_ref" value for YAS532/533 is known from the Android driver. + * For YAS530 it was approximately measured. + * + * The temperatures "min_temp_x10" are derived from the temperature resolutions + * given in the data sheets. */ struct yas5xx_chip_info { unsigned int devid; @@ -139,6 +145,8 @@ struct yas5xx_chip_info { const int *volatile_reg; int volatile_reg_qty; u32 scaling_val2; + u16 t_ref; + s16 min_temp_x10; }; /** @@ -337,6 +345,22 @@ static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis) (yas5xx->hard_offsets[axis] - c->r[axis]) * coef; } +static s32 yas5xx_calc_temperature(struct yas5xx *yas5xx, u16 t) +{ + const struct yas5xx_chip_info *ci = yas5xx->chip_info; + s32 to; + u16 t_ref; + s16 min_temp_x10; + int ref_temp_x10; + + t_ref = ci->t_ref; + min_temp_x10 = ci->min_temp_x10; + ref_temp_x10 = 200; + + to = (min_temp_x10 + ((ref_temp_x10 - min_temp_x10) * t / t_ref)) * 100; + return to; +} + /** * yas530_get_measure() - Measure a sample of all axis and process * @yas5xx: The device state @@ -352,7 +376,7 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, { const struct yas5xx_chip_info *ci = yas5xx->chip_info; struct yas5xx_calibration *c = &yas5xx->calibration; - u16 t_ref, t, x, y1, y2; + u16 t_ref, t_comp, t, x, y1, y2; /* These are signed x, signed y1 etc */ s32 sx, sy1, sy2, sy, sz; int ret; @@ -367,47 +391,30 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, sy1 = yas530_linearize(yas5xx, y1, 1); sy2 = yas530_linearize(yas5xx, y2, 2); - /* Set the temperature reference value (unit: counts) */ - switch (ci->devid) { - case YAS530_DEVICE_ID: - t_ref = YAS530_20DEGREES; - break; - case YAS532_DEVICE_ID: - t_ref = YAS532_20DEGREES; - break; - default: - dev_err(yas5xx->dev, "unknown device type\n"); - return -EINVAL; - } - - /* Temperature compensation for x, y1, y2 respectively */ + /* + * Set the temperature for compensation (unit: counts): + * YAS532/YAS533 version AC uses the temperature deviation as a + * multiplier. YAS530 and YAS532 version AB use solely the t value. + */ + t_ref = ci->t_ref; if (ci->devid == YAS532_DEVICE_ID && yas5xx->version == YAS532_VERSION_AC) { - /* - * YAS532 version AC uses the temperature deviation as a - * multiplier. - * - * Cx * (t - t_ref) - * x' = x - ---------------- - * 100 - */ - sx = sx - (c->Cx * (t - t_ref)) / 100; - sy1 = sy1 - (c->Cy1 * (t - t_ref)) / 100; - sy2 = sy2 - (c->Cy2 * (t - t_ref)) / 100; + t_comp = t - t_ref; } else { - /* - * YAS530 and YAS532 version AB use solely the t value as a - * multiplier. - * - * Cx * t - * x' = x - ------ - * 100 - */ - sx = sx - (c->Cx * t) / 100; - sy1 = sy1 - (c->Cy1 * t) / 100; - sy2 = sy2 - (c->Cy2 * t) / 100; + t_comp = t; } + /* + * Temperature compensation for x, y1, y2 respectively: + * + * Cx * t_comp + * x' = x - ----------- + * 100 + */ + sx = sx - (c->Cx * t_comp) / 100; + sy1 = sy1 - (c->Cy1 * t_comp) / 100; + sy2 = sy2 - (c->Cy2 * t_comp) / 100; + /* * Break y1 and y2 into y and z, y1 and y2 are apparently encoding * y and z. @@ -415,36 +422,8 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, sy = sy1 - sy2; sz = -sy1 - sy2; - /* Process temperature readout */ - switch (ci->devid) { - case YAS530_DEVICE_ID: - /* - * Raw temperature value t is the number of counts starting - * at -62 °C. Reference value t_ref is the number of counts - * between -62 °C and 20 °C (82 °C range). - * - * Temperature in °C would be (82 / t_ref * t) - 62. - * - * Contrary to this, perform multiplication first and division - * second due to calculating with integers. - * - * To get a nicer result, calculate with 1/10:s degrees Celsius - * and finally multiply by 100 to return millidegrees Celsius. - */ - *to = ((820 * t / t_ref) - 620) * 100; - break; - case YAS532_DEVICE_ID: - /* - * Actually same procedure for YAS532 but the starting point is - * at -50 °C. Reference value t_ref is the number of counts - * between -50 °C and 20 °C (70 °C range). - */ - *to = ((700 * t / t_ref) - 500) * 100; - break; - default: - dev_err(yas5xx->dev, "unknown device type\n"); - return -EINVAL; - } + /* Calculate temperature readout */ + *to = yas5xx_calc_temperature(yas5xx, t); /* * Calibrate [x,y,z] with some formulas like this: @@ -935,6 +914,8 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .volatile_reg = yas530_volatile_reg, .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), .scaling_val2 = 100000000, /* picotesla to Gauss */ + .t_ref = 182, /* counts */ + .min_temp_x10 = -620, /* 1/10:s degrees Celsius */ }, [yas532] = { .devid = YAS532_DEVICE_ID, @@ -943,6 +924,8 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .volatile_reg = yas530_volatile_reg, .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), .scaling_val2 = 100000, /* nanotesla to Gauss */ + .t_ref = 390, /* counts */ + .min_temp_x10 = -500, /* 1/10:s degrees Celsius */ }, [yas533] = { .devid = YAS532_DEVICE_ID, @@ -951,6 +934,8 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .volatile_reg = yas530_volatile_reg, .volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg), .scaling_val2 = 100000, /* nanotesla to Gauss */ + .t_ref = 390, /* counts */ + .min_temp_x10 = -500, /* 1/10:s degrees Celsius */ }, }; From 059ff0f9a10508c39f2c22d4144e88156bbf86ef Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Sat, 13 Aug 2022 00:05:02 +0200 Subject: [PATCH 096/142] iio: magnetometer: yas530: Add function pointers to "chip_info" Add function pointers to the "chip_info" structure to ease the handling of different YAS variants. In the function yas5xx_probe(), the function call for "measure_offsets" was added as a conditional "if (ci->measure_offsets)". This is a preparatory step for YAS537, as this variant doesn't need an offset measurement. Signed-off-by: Jakob Hauser Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/4bd3f96262e0132b7f9720521a801da3c18abd95.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 66 +++++++++++++++--------- 1 file changed, 42 insertions(+), 24 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index a5d3f0bff024..18933d8937ae 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -131,6 +131,11 @@ struct yas5xx; * @scaling_val2: scaling value for IIO_CHAN_INFO_SCALE * @t_ref: number of counts at reference temperature 20 °C * @min_temp_x10: starting point of temperature counting in 1/10:s degrees Celsius + * @get_measure: function pointer to get a measurement + * @get_calibration_data: function pointer to get calibration data + * @dump_calibration: function pointer to dump calibration for debugging + * @measure_offsets: function pointer to measure the offsets + * @power_on: function pointer to power-on procedure * * The "t_ref" value for YAS532/533 is known from the Android driver. * For YAS530 it was approximately measured. @@ -147,12 +152,17 @@ struct yas5xx_chip_info { u32 scaling_val2; u16 t_ref; s16 min_temp_x10; + int (*get_measure)(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo); + int (*get_calibration_data)(struct yas5xx *yas5xx); + void (*dump_calibration)(struct yas5xx *yas5xx); + int (*measure_offsets)(struct yas5xx *yas5xx); + int (*power_on)(struct yas5xx *yas5xx); }; /** * struct yas5xx - state container for the YAS5xx driver * @dev: parent device pointer - * @chip_info: device-specific data + * @chip_info: device-specific data and function pointers * @version: device version * @calibration: calibration settings from the OTP storage * @hard_offsets: offsets for each axis measured with initcoil actuated @@ -461,7 +471,7 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_PROCESSED: case IIO_CHAN_INFO_RAW: pm_runtime_get_sync(yas5xx->dev); - ret = yas530_get_measure(yas5xx, &t, &x, &y, &z); + ret = ci->get_measure(yas5xx, &t, &x, &y, &z); pm_runtime_mark_last_busy(yas5xx->dev); pm_runtime_put_autosuspend(yas5xx->dev); if (ret) @@ -497,11 +507,12 @@ static int yas5xx_read_raw(struct iio_dev *indio_dev, static void yas5xx_fill_buffer(struct iio_dev *indio_dev) { struct yas5xx *yas5xx = iio_priv(indio_dev); + const struct yas5xx_chip_info *ci = yas5xx->chip_info; s32 t, x, y, z; int ret; pm_runtime_get_sync(yas5xx->dev); - ret = yas530_get_measure(yas5xx, &t, &x, &y, &z); + ret = ci->get_measure(yas5xx, &t, &x, &y, &z); pm_runtime_mark_last_busy(yas5xx->dev); pm_runtime_put_autosuspend(yas5xx->dev); if (ret) { @@ -916,6 +927,11 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .scaling_val2 = 100000000, /* picotesla to Gauss */ .t_ref = 182, /* counts */ .min_temp_x10 = -620, /* 1/10:s degrees Celsius */ + .get_measure = yas530_get_measure, + .get_calibration_data = yas530_get_calibration_data, + .dump_calibration = yas530_dump_calibration, + .measure_offsets = yas530_measure_offsets, + .power_on = yas530_power_on, }, [yas532] = { .devid = YAS532_DEVICE_ID, @@ -926,6 +942,11 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .scaling_val2 = 100000, /* nanotesla to Gauss */ .t_ref = 390, /* counts */ .min_temp_x10 = -500, /* 1/10:s degrees Celsius */ + .get_measure = yas530_get_measure, + .get_calibration_data = yas532_get_calibration_data, + .dump_calibration = yas530_dump_calibration, + .measure_offsets = yas530_measure_offsets, + .power_on = yas530_power_on, }, [yas533] = { .devid = YAS532_DEVICE_ID, @@ -936,6 +957,11 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .scaling_val2 = 100000, /* nanotesla to Gauss */ .t_ref = 390, /* counts */ .min_temp_x10 = -500, /* 1/10:s degrees Celsius */ + .get_measure = yas530_get_measure, + .get_calibration_data = yas532_get_calibration_data, + .dump_calibration = yas530_dump_calibration, + .measure_offsets = yas530_measure_offsets, + .power_on = yas530_power_on, }, }; @@ -1007,34 +1033,25 @@ static int yas5xx_probe(struct i2c_client *i2c, goto assert_reset; } - switch (ci->devid) { - case YAS530_DEVICE_ID: - ret = yas530_get_calibration_data(yas5xx); - if (ret) - goto assert_reset; - break; - case YAS532_DEVICE_ID: - ret = yas532_get_calibration_data(yas5xx); - if (ret) - goto assert_reset; - break; - default: - ret = -ENODEV; - dev_err(dev, "unhandled device ID %02x\n", ci->devid); + ret = ci->get_calibration_data(yas5xx); + if (ret) goto assert_reset; - } dev_info(dev, "detected %s %s\n", ci->product_name, ci->version_names[yas5xx->version]); - yas530_dump_calibration(yas5xx); - ret = yas530_power_on(yas5xx); - if (ret) - goto assert_reset; - ret = yas530_measure_offsets(yas5xx); + ci->dump_calibration(yas5xx); + + ret = ci->power_on(yas5xx); if (ret) goto assert_reset; + if (ci->measure_offsets) { + ret = ci->measure_offsets(yas5xx); + if (ret) + goto assert_reset; + } + indio_dev->info = &yas5xx_info; indio_dev->available_scan_masks = yas5xx_scan_masks; indio_dev->modes = INDIO_DIRECT_MODE; @@ -1114,6 +1131,7 @@ static int yas5xx_runtime_resume(struct device *dev) { struct iio_dev *indio_dev = dev_get_drvdata(dev); struct yas5xx *yas5xx = iio_priv(indio_dev); + const struct yas5xx_chip_info *ci = yas5xx->chip_info; int ret; ret = regulator_bulk_enable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs); @@ -1130,7 +1148,7 @@ static int yas5xx_runtime_resume(struct device *dev) usleep_range(31000, 40000); gpiod_set_value_cansleep(yas5xx->reset, 0); - ret = yas530_power_on(yas5xx); + ret = ci->power_on(yas5xx); if (ret) { dev_err(dev, "cannot power on\n"); goto out_reset; From 65f79b501030678393eae0ae03d60a8151fbef55 Mon Sep 17 00:00:00 2001 From: Jakob Hauser Date: Sat, 13 Aug 2022 00:05:03 +0200 Subject: [PATCH 097/142] iio: magnetometer: yas530: Add YAS537 variant Add support for the magnetometer Yamaha YAS537. The additions are based on comparison of Yamaha Android kernel drivers for YAS532 [1] and YAS537 [2]. In the Yamaha YAS537 Android driver, there is an overflow/underflow control implemented. For regular usage, this seems not necessary. A similar overflow/ underflow control of Yamaha YAS530/532 Android driver isn't integrated in the mainline driver. It is therefore skipped for YAS537 in the mainline too. Also in the Yamaha YAS537 Android driver, at the end of the reset_yas537() function, a measurement is saved in "last_after_rcoil". Later on, this is compared to current measurements. If the difference gets too big, a new reset is initialized. The difference in measurements needs to be quite big, it's hard to say if this is necessary for regular operation. Therefore this isn't integrated in the mainline driver either. [1] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas532.c [2] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas537.c Signed-off-by: Jakob Hauser Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/264c6488733a5c32089c9ab406a5bcb808c48fef.1660337264.git.jahau@rocketmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/Kconfig | 4 +- drivers/iio/magnetometer/yamaha-yas530.c | 422 ++++++++++++++++++++++- 2 files changed, 423 insertions(+), 3 deletions(-) diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig index 07eb619bcfe8..b91fc5e6a26e 100644 --- a/drivers/iio/magnetometer/Kconfig +++ b/drivers/iio/magnetometer/Kconfig @@ -216,8 +216,8 @@ config YAMAHA_YAS530 select IIO_TRIGGERED_BUFFER help Say Y here to add support for the Yamaha YAS530 series of - 3-Axis Magnetometers. Right now YAS530, YAS532 and YAS533 are - fully supported. + 3-Axis Magnetometers. YAS530, YAS532, YAS533 and YAS537 are + supported. This driver can also be compiled as a module. To compile this driver as a module, choose M here: the module diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 18933d8937ae..65bb34c24810 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -17,6 +17,9 @@ * named "inv_compass" in the Tegra Android kernel tree. * Copyright (C) 2012 InvenSense Corporation * + * Code functions for YAS537 based on Yamaha Android kernel driver. + * Copyright (c) 2014 Yamaha Corporation + * * Author: Linus Walleij */ #include @@ -32,6 +35,7 @@ #include #include #include +#include #include #include @@ -56,6 +60,23 @@ #define YAS530_TEST2 0x89 #define YAS530_CAL 0x90 +/* Registers used by YAS537 */ +#define YAS537_MEASURE 0x81 /* Originally YAS537_REG_CMDR */ +#define YAS537_CONFIG 0x82 /* Originally YAS537_REG_CONFR */ +#define YAS537_MEASURE_INTERVAL 0x83 /* Originally YAS537_REG_INTRVLR */ +#define YAS537_OFFSET_X 0x84 /* Originally YAS537_REG_OXR */ +#define YAS537_OFFSET_Y1 0x85 /* Originally YAS537_REG_OY1R */ +#define YAS537_OFFSET_Y2 0x86 /* Originally YAS537_REG_OY2R */ +#define YAS537_AVR 0x87 +#define YAS537_HCK 0x88 +#define YAS537_LCK 0x89 +#define YAS537_SRST 0x90 +#define YAS537_ADCCAL 0x91 +#define YAS537_MTC 0x93 +#define YAS537_OC 0x9E +#define YAS537_TRM 0x9F +#define YAS537_CAL 0xC0 + /* Bits in the YAS5xx config register */ #define YAS5XX_CONFIG_INTON BIT(0) /* Interrupt on? */ #define YAS5XX_CONFIG_INTHACT BIT(1) /* Interrupt active high? */ @@ -67,6 +88,7 @@ #define YAS5XX_MEASURE_LDTC BIT(1) #define YAS5XX_MEASURE_FORS BIT(2) #define YAS5XX_MEASURE_DLYMES BIT(4) +#define YAS5XX_MEASURE_CONT BIT(5) /* Bits in the measure data register */ #define YAS5XX_MEASURE_DATA_BUSY BIT(7) @@ -91,6 +113,22 @@ #define YAS532_DATA_CENTER BIT(YAS532_DATA_BITS - 1) #define YAS532_DATA_OVERFLOW (BIT(YAS532_DATA_BITS) - 1) +#define YAS537_DEVICE_ID 0x07 /* YAS537 (MS-3T) */ +#define YAS537_VERSION_0 0 /* Version naming unknown */ +#define YAS537_VERSION_1 1 /* Version naming unknown */ +#define YAS537_MAG_AVERAGE_32_MASK GENMASK(6, 4) +#define YAS537_MEASURE_TIME_WORST_US 1500 +#define YAS537_DEFAULT_SENSOR_DELAY_MS 50 +#define YAS537_MAG_RCOIL_TIME_US 65 +#define YAS537_MTC3_MASK_PREP GENMASK(7, 0) +#define YAS537_MTC3_MASK_GET GENMASK(7, 5) +#define YAS537_MTC3_ADD_BIT BIT(4) +#define YAS537_HCK_MASK_PREP GENMASK(4, 0) +#define YAS537_HCK_MASK_GET GENMASK(7, 4) +#define YAS537_LCK_MASK_PREP GENMASK(4, 0) +#define YAS537_LCK_MASK_GET GENMASK(3, 0) +#define YAS537_OC_MASK_GET GENMASK(5, 0) + /* Turn off device regulators etc after 5 seconds of inactivity */ #define YAS5XX_AUTOSUSPEND_DELAY_MS 5000 @@ -98,6 +136,7 @@ enum chip_ids { yas530, yas532, yas533, + yas537, }; static const int yas530_volatile_reg[] = { @@ -105,6 +144,10 @@ static const int yas530_volatile_reg[] = { YAS530_MEASURE, }; +static const int yas537_volatile_reg[] = { + YAS537_MEASURE, +}; + struct yas5xx_calibration { /* Linearization calibration x, y1, y2 */ s32 r[3]; @@ -138,7 +181,7 @@ struct yas5xx; * @power_on: function pointer to power-on procedure * * The "t_ref" value for YAS532/533 is known from the Android driver. - * For YAS530 it was approximately measured. + * For YAS530 and YAS537 it was approximately measured. * * The temperatures "min_temp_x10" are derived from the temperature resolutions * given in the data sheets. @@ -312,6 +355,77 @@ out_unlock: return ret; } +/** + * yas537_measure() - Make a measure from the hardware + * @yas5xx: The device state + * @t: the raw temperature measurement + * @x: the raw x axis measurement + * @y1: the y1 axis measurement + * @y2: the y2 axis measurement + * @return: 0 on success or error code + */ +static int yas537_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2) +{ + struct yas5xx_calibration *c = &yas5xx->calibration; + unsigned int busy; + u8 data[8]; + u16 xy1y2[3]; + s32 h[3], s[3]; + int i, ret; + + mutex_lock(&yas5xx->lock); + + /* Contrary to YAS530/532, also a "cont" bit is set, meaning unknown */ + ret = regmap_write(yas5xx->map, YAS537_MEASURE, YAS5XX_MEASURE_START | + YAS5XX_MEASURE_CONT); + if (ret < 0) + goto out_unlock; + + /* Use same timeout like YAS530/532 but the bit is in data row 2 */ + ret = regmap_read_poll_timeout(yas5xx->map, YAS5XX_MEASURE_DATA + 2, busy, + !(busy & YAS5XX_MEASURE_DATA_BUSY), + 500, 20000); + if (ret) { + dev_err(yas5xx->dev, "timeout waiting for measurement\n"); + goto out_unlock; + } + + ret = regmap_bulk_read(yas5xx->map, YAS5XX_MEASURE_DATA, + data, sizeof(data)); + if (ret) + goto out_unlock; + + mutex_unlock(&yas5xx->lock); + + *t = get_unaligned_be16(&data[0]); + xy1y2[0] = FIELD_GET(GENMASK(13, 0), get_unaligned_be16(&data[2])); + xy1y2[1] = get_unaligned_be16(&data[4]); + xy1y2[2] = get_unaligned_be16(&data[6]); + + /* The second version of YAS537 needs to include calibration coefficients */ + if (yas5xx->version == YAS537_VERSION_1) { + for (i = 0; i < 3; i++) + s[i] = xy1y2[i] - BIT(13); + h[0] = (c->k * (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / BIT(13); + h[1] = (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / BIT(13); + h[2] = (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / BIT(13); + for (i = 0; i < 3; i++) { + clamp_val(h[i], -BIT(13), BIT(13) - 1); + xy1y2[i] = h[i] + BIT(13); + } + } + + *x = xy1y2[0]; + *y1 = xy1y2[1]; + *y2 = xy1y2[2]; + + return 0; + +out_unlock: + mutex_unlock(&yas5xx->lock); + return ret; +} + /* Used by YAS530, YAS532 and YAS533 */ static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis) { @@ -457,6 +571,41 @@ static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, return 0; } +/** + * yas537_get_measure() - Measure a sample of all axis and process + * @yas5xx: The device state + * @to: Temperature out + * @xo: X axis out + * @yo: Y axis out + * @zo: Z axis out + * @return: 0 on success or error code + */ +static int yas537_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo) +{ + u16 t, x, y1, y2; + int ret; + + /* We first get raw data that needs to be translated to [x,y,z] */ + ret = yas537_measure(yas5xx, &t, &x, &y1, &y2); + if (ret) + return ret; + + /* Calculate temperature readout */ + *to = yas5xx_calc_temperature(yas5xx, t); + + /* + * Unfortunately, no linearization or temperature compensation formulas + * are known for YAS537. + */ + + /* Calculate x, y, z from x, y1, y2 */ + *xo = (x - BIT(13)) * 300; + *yo = (y1 - y2) * 1732 / 10; + *zo = (-y1 - y2 + BIT(14)) * 300; + + return 0; +} + static int yas5xx_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, @@ -772,6 +921,202 @@ static int yas532_get_calibration_data(struct yas5xx *yas5xx) return 0; } +static int yas537_get_calibration_data(struct yas5xx *yas5xx) +{ + struct yas5xx_calibration *c = &yas5xx->calibration; + u8 data[17]; + u32 val1, val2, val3, val4; + int i, ret; + + /* Writing SRST register */ + ret = regmap_write(yas5xx->map, YAS537_SRST, BIT(1)); + if (ret) + return ret; + + /* Calibration readout, YAS537 needs one readout only */ + ret = regmap_bulk_read(yas5xx->map, YAS537_CAL, data, sizeof(data)); + if (ret) + return ret; + dev_dbg(yas5xx->dev, "calibration data: %17ph\n", data); + + /* Sanity check, is this all zeroes? */ + if (!memchr_inv(data, 0x00, 16) && !FIELD_GET(GENMASK(5, 0), data[16])) + dev_warn(yas5xx->dev, "calibration is blank!\n"); + + /* Contribute calibration data to the input pool for kernel entropy */ + add_device_randomness(data, sizeof(data)); + + /* Extract version information */ + yas5xx->version = FIELD_GET(GENMASK(7, 6), data[16]); + + /* There are two versions of YAS537 behaving differently */ + switch (yas5xx->version) { + case YAS537_VERSION_0: + /* + * The first version simply writes data back into registers: + * + * data[0] YAS537_MTC 0x93 + * data[1] 0x94 + * data[2] 0x95 + * data[3] 0x96 + * data[4] 0x97 + * data[5] 0x98 + * data[6] 0x99 + * data[7] 0x9a + * data[8] 0x9b + * data[9] 0x9c + * data[10] 0x9d + * data[11] YAS537_OC 0x9e + * + * data[12] YAS537_OFFSET_X 0x84 + * data[13] YAS537_OFFSET_Y1 0x85 + * data[14] YAS537_OFFSET_Y2 0x86 + * + * data[15] YAS537_HCK 0x88 + * data[16] YAS537_LCK 0x89 + */ + for (i = 0; i < 12; i++) { + ret = regmap_write(yas5xx->map, YAS537_MTC + i, + data[i]); + if (ret) + return ret; + } + for (i = 0; i < 3; i++) { + ret = regmap_write(yas5xx->map, YAS537_OFFSET_X + i, + data[i + 12]); + if (ret) + return ret; + yas5xx->hard_offsets[i] = data[i + 12]; + } + for (i = 0; i < 2; i++) { + ret = regmap_write(yas5xx->map, YAS537_HCK + i, + data[i + 15]); + if (ret) + return ret; + } + break; + case YAS537_VERSION_1: + /* + * The second version writes some data into registers but also + * extracts calibration coefficients. + * + * Registers being written: + * + * data[0] YAS537_MTC 0x93 + * data[1] YAS537_MTC+1 0x94 + * data[2] YAS537_MTC+2 0x95 + * data[3] YAS537_MTC+3 (partially) 0x96 + * + * data[12] YAS537_OFFSET_X 0x84 + * data[13] YAS537_OFFSET_Y1 0x85 + * data[14] YAS537_OFFSET_Y2 0x86 + * + * data[15] YAS537_HCK (partially) 0x88 + * YAS537_LCK (partially) 0x89 + * data[16] YAS537_OC (partially) 0x9e + */ + for (i = 0; i < 3; i++) { + ret = regmap_write(yas5xx->map, YAS537_MTC + i, + data[i]); + if (ret) + return ret; + } + for (i = 0; i < 3; i++) { + ret = regmap_write(yas5xx->map, YAS537_OFFSET_X + i, + data[i + 12]); + if (ret) + return ret; + yas5xx->hard_offsets[i] = data[i + 12]; + } + /* + * Visualization of partially taken data: + * + * data[3] n 7 6 5 4 3 2 1 0 + * YAS537_MTC+3 x x x 1 0 0 0 0 + * + * data[15] n 7 6 5 4 3 2 1 0 + * YAS537_HCK x x x x 0 + * + * data[15] n 7 6 5 4 3 2 1 0 + * YAS537_LCK x x x x 0 + * + * data[16] n 7 6 5 4 3 2 1 0 + * YAS537_OC x x x x x x + */ + ret = regmap_write(yas5xx->map, YAS537_MTC + 3, + FIELD_PREP(YAS537_MTC3_MASK_PREP, + FIELD_GET(YAS537_MTC3_MASK_GET, data[3])) | + YAS537_MTC3_ADD_BIT); + if (ret) + return ret; + ret = regmap_write(yas5xx->map, YAS537_HCK, + FIELD_PREP(YAS537_HCK_MASK_PREP, + FIELD_GET(YAS537_HCK_MASK_GET, data[15]))); + if (ret) + return ret; + ret = regmap_write(yas5xx->map, YAS537_LCK, + FIELD_PREP(YAS537_LCK_MASK_PREP, + FIELD_GET(YAS537_LCK_MASK_GET, data[15]))); + if (ret) + return ret; + ret = regmap_write(yas5xx->map, YAS537_OC, + FIELD_GET(YAS537_OC_MASK_GET, data[16])); + if (ret) + return ret; + /* + * For data extraction, build some blocks. Four 32-bit blocks + * look appropriate. + * + * n 7 6 5 4 3 2 1 0 + * data[0] 0 [ Cx Cx Cx Cx Cx Cx Cx Cx ] bits 31 .. 24 + * data[1] 1 [ Cx C1 C1 C1 C1 C1 C1 C1 ] bits 23 .. 16 + * data[2] 2 [ C1 C1 C2 C2 C2 C2 C2 C2 ] bits 15 .. 8 + * data[3] 3 [ C2 C2 C2 ] bits 7 .. 0 + * + * n 7 6 5 4 3 2 1 0 + * data[3] 0 [ a2 a2 a2 a2 a2 ] bits 31 .. 24 + * data[4] 1 [ a2 a2 a3 a3 a3 a3 a3 a3 ] bits 23 .. 16 + * data[5] 2 [ a3 a4 a4 a4 a4 a4 a4 a4 ] bits 15 .. 8 + * data[6] 3 [ a4 ] bits 7 .. 0 + * + * n 7 6 5 4 3 2 1 0 + * data[6] 0 [ a5 a5 a5 a5 a5 a5 a5 ] bits 31 .. 24 + * data[7] 1 [ a5 a5 a6 a6 a6 a6 a6 a6 ] bits 23 .. 16 + * data[8] 2 [ a6 a7 a7 a7 a7 a7 a7 a7 ] bits 15 .. 8 + * data[9] 3 [ a7 ] bits 7 .. 0 + * + * n 7 6 5 4 3 2 1 0 + * data[9] 0 [ a8 a8 a8 a8 a8 a8 a8 ] bits 31 .. 24 + * data[10] 1 [ a9 a9 a9 a9 a9 a9 a9 a9 ] bits 23 .. 16 + * data[11] 2 [ a9 k k k k k k k ] bits 15 .. 8 + * data[12] 3 [ ] bits 7 .. 0 + */ + val1 = get_unaligned_be32(&data[0]); + val2 = get_unaligned_be32(&data[3]); + val3 = get_unaligned_be32(&data[6]); + val4 = get_unaligned_be32(&data[9]); + /* Extract calibration coefficients and modify */ + c->Cx = FIELD_GET(GENMASK(31, 23), val1) - 256; + c->Cy1 = FIELD_GET(GENMASK(22, 14), val1) - 256; + c->Cy2 = FIELD_GET(GENMASK(13, 5), val1) - 256; + c->a2 = FIELD_GET(GENMASK(28, 22), val2) - 64; + c->a3 = FIELD_GET(GENMASK(21, 15), val2) - 64; + c->a4 = FIELD_GET(GENMASK(14, 7), val2) - 128; + c->a5 = FIELD_GET(GENMASK(30, 22), val3) - 112; + c->a6 = FIELD_GET(GENMASK(21, 15), val3) - 64; + c->a7 = FIELD_GET(GENMASK(14, 7), val3) - 128; + c->a8 = FIELD_GET(GENMASK(30, 24), val4) - 64; + c->a9 = FIELD_GET(GENMASK(23, 15), val4) - 112; + c->k = FIELD_GET(GENMASK(14, 8), val4); + break; + default: + dev_err(yas5xx->dev, "unknown version of YAS537\n"); + return -EINVAL; + } + + return 0; +} + /* Used by YAS530, YAS532 and YAS533 */ static void yas530_dump_calibration(struct yas5xx *yas5xx) { @@ -796,6 +1141,26 @@ static void yas530_dump_calibration(struct yas5xx *yas5xx) dev_dbg(yas5xx->dev, "dck = %d\n", c->dck); } +static void yas537_dump_calibration(struct yas5xx *yas5xx) +{ + struct yas5xx_calibration *c = &yas5xx->calibration; + + if (yas5xx->version == YAS537_VERSION_1) { + dev_dbg(yas5xx->dev, "Cx = %d\n", c->Cx); + dev_dbg(yas5xx->dev, "Cy1 = %d\n", c->Cy1); + dev_dbg(yas5xx->dev, "Cy2 = %d\n", c->Cy2); + dev_dbg(yas5xx->dev, "a2 = %d\n", c->a2); + dev_dbg(yas5xx->dev, "a3 = %d\n", c->a3); + dev_dbg(yas5xx->dev, "a4 = %d\n", c->a4); + dev_dbg(yas5xx->dev, "a5 = %d\n", c->a5); + dev_dbg(yas5xx->dev, "a6 = %d\n", c->a6); + dev_dbg(yas5xx->dev, "a7 = %d\n", c->a7); + dev_dbg(yas5xx->dev, "a8 = %d\n", c->a8); + dev_dbg(yas5xx->dev, "a9 = %d\n", c->a9); + dev_dbg(yas5xx->dev, "k = %d\n", c->k); + } +} + /* Used by YAS530, YAS532 and YAS533 */ static int yas530_set_offsets(struct yas5xx *yas5xx, s8 ox, s8 oy1, s8 oy2) { @@ -917,6 +1282,44 @@ static int yas530_power_on(struct yas5xx *yas5xx) return regmap_write(yas5xx->map, YAS530_MEASURE_INTERVAL, 0); } +static int yas537_power_on(struct yas5xx *yas5xx) +{ + __be16 buf; + int ret; + u8 intrvl; + + /* Writing ADCCAL and TRM registers */ + buf = cpu_to_be16(GENMASK(9, 3)); + ret = regmap_bulk_write(yas5xx->map, YAS537_ADCCAL, &buf, sizeof(buf)); + if (ret) + return ret; + ret = regmap_write(yas5xx->map, YAS537_TRM, GENMASK(7, 0)); + if (ret) + return ret; + + /* The interval value is static in regular operation */ + intrvl = (YAS537_DEFAULT_SENSOR_DELAY_MS * MILLI + - YAS537_MEASURE_TIME_WORST_US) / 4100; + ret = regmap_write(yas5xx->map, YAS537_MEASURE_INTERVAL, intrvl); + if (ret) + return ret; + + /* The average value is also static in regular operation */ + ret = regmap_write(yas5xx->map, YAS537_AVR, YAS537_MAG_AVERAGE_32_MASK); + if (ret) + return ret; + + /* Perform the "rcoil" part but skip the "last_after_rcoil" read */ + ret = regmap_write(yas5xx->map, YAS537_CONFIG, BIT(3)); + if (ret) + return ret; + + /* Wait until the coil has ramped up */ + usleep_range(YAS537_MAG_RCOIL_TIME_US, YAS537_MAG_RCOIL_TIME_US + 100); + + return 0; +} + static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { [yas530] = { .devid = YAS530_DEVICE_ID, @@ -963,6 +1366,21 @@ static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = { .measure_offsets = yas530_measure_offsets, .power_on = yas530_power_on, }, + [yas537] = { + .devid = YAS537_DEVICE_ID, + .product_name = "YAS537 MS-3T", + .version_names = { "v0", "v1" }, /* version naming unknown */ + .volatile_reg = yas537_volatile_reg, + .volatile_reg_qty = ARRAY_SIZE(yas537_volatile_reg), + .scaling_val2 = 100000, /* nanotesla to Gauss */ + .t_ref = 8120, /* counts */ + .min_temp_x10 = -3860, /* 1/10:s degrees Celsius */ + .get_measure = yas537_get_measure, + .get_calibration_data = yas537_get_calibration_data, + .dump_calibration = yas537_dump_calibration, + /* .measure_offets is not needed for yas537 */ + .power_on = yas537_power_on, + }, }; static int yas5xx_probe(struct i2c_client *i2c, @@ -1170,6 +1588,7 @@ static const struct i2c_device_id yas5xx_id[] = { {"yas530", yas530 }, {"yas532", yas532 }, {"yas533", yas533 }, + {"yas537", yas537 }, {} }; MODULE_DEVICE_TABLE(i2c, yas5xx_id); @@ -1178,6 +1597,7 @@ static const struct of_device_id yas5xx_of_match[] = { { .compatible = "yamaha,yas530", }, { .compatible = "yamaha,yas532", }, { .compatible = "yamaha,yas533", }, + { .compatible = "yamaha,yas537", }, {} }; MODULE_DEVICE_TABLE(of, yas5xx_of_match); From b82217e73b5aa6db8453ad91b929ca2366e47184 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 26 Jul 2022 17:20:48 +0300 Subject: [PATCH 098/142] iio: pressure: dlhl60d: Don't take garbage into consideration when reading data Both pressure and temperature are 24-bit long. Use proper accessors instead of overlapping readings. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220726142048.4494-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/dlhl60d.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c index 5f6bb3603a8b..f0b0d198c6d4 100644 --- a/drivers/iio/pressure/dlhl60d.c +++ b/drivers/iio/pressure/dlhl60d.c @@ -129,9 +129,8 @@ static int dlh_read_direct(struct dlh_state *st, if (ret) return ret; - *pressure = get_unaligned_be32(&st->rx_buf[1]) >> 8; - *temperature = get_unaligned_be32(&st->rx_buf[3]) & - GENMASK(DLH_NUM_TEMP_BITS - 1, 0); + *pressure = get_unaligned_be24(&st->rx_buf[1]); + *temperature = get_unaligned_be24(&st->rx_buf[4]); return 0; } From 30475ef2836ee47965e424b79e54e35c18ff0aeb Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Fri, 19 Aug 2022 13:41:17 +0300 Subject: [PATCH 099/142] iio: frequency: admv1014: return -EINVAL directly Remove extra step where the error code is assigned to the `ret` variable. Return instead error code directly. Signed-off-by: Antoniu Miclaus Link: https://lore.kernel.org/r/20220819104117.4600-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/frequency/admv1014.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iio/frequency/admv1014.c b/drivers/iio/frequency/admv1014.c index 865addd10db4..bb5e1feef42b 100644 --- a/drivers/iio/frequency/admv1014.c +++ b/drivers/iio/frequency/admv1014.c @@ -669,8 +669,7 @@ static int admv1014_init(struct admv1014_state *st) chip_id = FIELD_GET(ADMV1014_CHIP_ID_MSK, chip_id); if (chip_id != ADMV1014_CHIP_ID) { dev_err(&spi->dev, "Invalid Chip ID.\n"); - ret = -EINVAL; - return ret; + return -EINVAL; } ret = __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD, From ae2c9cf14c1ee451cd2215584b21619f1568d9e1 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Thu, 18 Aug 2022 23:00:16 +0200 Subject: [PATCH 100/142] iio: st_sensors: move from strlcpy with unused retval to strscpy Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20220818210017.6817-1-wsa+renesas@sang-engineering.com Signed-off-by: Jonathan Cameron --- drivers/iio/common/st_sensors/st_sensors_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c index 9910ba1da085..35720c64fea8 100644 --- a/drivers/iio/common/st_sensors/st_sensors_core.c +++ b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -354,7 +354,7 @@ void st_sensors_dev_name_probe(struct device *dev, char *name, int len) return; /* The name from the match takes precedence if present */ - strlcpy(name, match, len); + strscpy(name, match, len); } EXPORT_SYMBOL_NS(st_sensors_dev_name_probe, IIO_ST_SENSORS); From a723df3d430933a326257b049a993f377df66e1c Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 19 Aug 2022 18:23:48 +0100 Subject: [PATCH 101/142] iio: imu: inv_mpu6050: move from strlcpy with unused retval to strscpy Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c index 9b4298095d3f..f7bce428d9eb 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c @@ -65,7 +65,7 @@ static int asus_acpi_get_sensor_info(struct acpi_device *adev, sub_elem = &elem->package.elements[j]; if (sub_elem->type == ACPI_TYPE_STRING) - strlcpy(info->type, sub_elem->string.pointer, + strscpy(info->type, sub_elem->string.pointer, sizeof(info->type)); else if (sub_elem->type == ACPI_TYPE_INTEGER) { if (sub_elem->integer.value != client->addr) { @@ -158,7 +158,7 @@ int inv_mpu_acpi_create_mux_client(struct i2c_client *client) char *name; info.addr = secondary; - strlcpy(info.type, dev_name(&adev->dev), + strscpy(info.type, dev_name(&adev->dev), sizeof(info.type)); name = strchr(info.type, ':'); if (name) From 83de806074980ea94930ca4ff6754fecf9ad8290 Mon Sep 17 00:00:00 2001 From: Robert Marko Date: Fri, 19 Aug 2022 00:18:13 +0200 Subject: [PATCH 102/142] iio: adc: qcom-spmi-adc5: add ADC5_VREF_VADC to rev2 ADC5 Add support for ADC5_VREF_VADC channel to rev2 ADC5 channel list. This channel measures the VADC reference LDO output. Signed-off-by: Robert Marko Link: https://lore.kernel.org/r/20220818221815.346233-3-robimarko@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/qcom-spmi-adc5.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index e96da2ef1964..821fee60a765 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -597,6 +597,8 @@ static const struct adc5_channels adc5_chans_rev2[ADC5_MAX_CHANNEL] = { SCALE_HW_CALIB_DEFAULT) [ADC5_1P25VREF] = ADC5_CHAN_VOLT("vref_1p25", 0, SCALE_HW_CALIB_DEFAULT) + [ADC5_VREF_VADC] = ADC5_CHAN_VOLT("vref_vadc", 0, + SCALE_HW_CALIB_DEFAULT) [ADC5_VPH_PWR] = ADC5_CHAN_VOLT("vph_pwr", 1, SCALE_HW_CALIB_DEFAULT) [ADC5_VBAT_SNS] = ADC5_CHAN_VOLT("vbat_sns", 1, From f33abd2d57f9df81de8d4c1fee5c68849a0f8690 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:53:59 +0300 Subject: [PATCH 103/142] dt-bindings: iio: Drop Tomislav Denis Emails to Tomislav Denis bounce ("550 5.1.1 User Unknown"). Signed-off-by: Krzysztof Kozlowski Acked-by: Rob Herring Link: https://lore.kernel.org/r/20220816125401.70317-1-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml | 2 +- Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml index e0670e3fbb72..2876397fc668 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml @@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: Texas Instruments ADS131E0x 4-, 6- and 8-Channel ADCs maintainers: - - Tomislav Denis + - Jonathan Cameron description: | The ADS131E0x are a family of multichannel, simultaneous sampling, diff --git a/Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml b/Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml index be2be4b556db..1f9fe15b4b3c 100644 --- a/Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml +++ b/Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml @@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: All Sensors DLH series low voltage digital pressure sensors maintainers: - - Tomislav Denis + - Jonathan Cameron description: | Bindings for the All Sensors DLH series pressure sensors. From 6683fdf4202c5d7cb2fa47a13adaf275ca3ac1a2 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:54:00 +0300 Subject: [PATCH 104/142] iio: MAINTAINERS: Drop Tomislav Denis Emails to Tomislav Denis bounce ("550 5.1.1 User Unknown"). Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220816125401.70317-2-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- MAINTAINERS | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index b8b6544ba27c..a88edf508003 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -754,14 +754,6 @@ L: Dell.Client.Kernel@dell.com S: Maintained F: drivers/platform/x86/dell/alienware-wmi.c -ALL SENSORS DLH SERIES PRESSURE SENSORS DRIVER -M: Tomislav Denis -L: linux-iio@vger.kernel.org -S: Maintained -W: http://www.allsensors.com/ -F: Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml -F: drivers/iio/pressure/dlhl60d.c - ALLEGRO DVT VIDEO IP CORE DRIVER M: Michael Tretter R: Pengutronix Kernel Team @@ -20246,13 +20238,6 @@ M: Robert Richter S: Odd Fixes F: drivers/gpio/gpio-thunderx.c -TI ADS131E0X ADC SERIES DRIVER -M: Tomislav Denis -L: linux-iio@vger.kernel.org -S: Maintained -F: Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml -F: drivers/iio/adc/ti-ads131e08.c - TI AM437X VPFE DRIVER M: "Lad, Prabhakar" L: linux-media@vger.kernel.org From 59d1c811c1dd9ab3bd2d216d1453eb0e4cacd52c Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:54:01 +0300 Subject: [PATCH 105/142] dt-bindings: iio: adc: Drop Patrick Vasseur Emails to Patrick Vasseur bounce ("Unknown To address"). Signed-off-by: Krzysztof Kozlowski Acked-by: Rob Herring Link: https://lore.kernel.org/r/20220816125401.70317-3-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml | 1 - 1 file changed, 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml index e82194974eea..82168b1495eb 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml @@ -8,7 +8,6 @@ title: Analog Devices AD7923 and similars with 4 and 8 Channel ADCs. maintainers: - Michael Hennerich - - Patrick Vasseur description: | Analog Devices AD7904, AD7914, AD7923, AD7924 4 Channel ADCs, and AD7908, From 801373884560e707883adb2aa7ef9bf2293bf88a Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:12 +0300 Subject: [PATCH 106/142] dt-bindings: iio: adc: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Marcus Folkesson Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-2-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../bindings/iio/adc/adi,ad7124.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7192.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7280a.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7292.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7298.yaml | 6 +++-- .../bindings/iio/adc/adi,ad7476.yaml | 8 +++--- .../bindings/iio/adc/adi,ad7606.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7768-1.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7923.yaml | 7 ++--- .../bindings/iio/adc/adi,ad7949.yaml | 7 ++--- .../bindings/iio/adc/holt,hi8435.yaml | 7 ++--- .../bindings/iio/adc/lltc,ltc2496.yaml | 8 +++--- .../bindings/iio/adc/maxim,max1027.yaml | 5 +++- .../bindings/iio/adc/maxim,max11100.yaml | 7 +++-- .../bindings/iio/adc/maxim,max1118.yaml | 26 ++++++++++--------- .../bindings/iio/adc/maxim,max1241.yaml | 7 ++--- .../bindings/iio/adc/microchip,mcp3201.yaml | 6 +++-- .../bindings/iio/adc/microchip,mcp3911.yaml | 5 +++- .../bindings/iio/adc/ti,adc0832.yaml | 7 ++--- .../bindings/iio/adc/ti,adc084s021.yaml | 7 ++--- .../bindings/iio/adc/ti,adc108s102.yaml | 6 +++-- .../bindings/iio/adc/ti,adc12138.yaml | 7 ++--- .../bindings/iio/adc/ti,adc128s052.yaml | 7 ++--- .../bindings/iio/adc/ti,adc161s626.yaml | 7 ++--- .../bindings/iio/adc/ti,ads124s08.yaml | 7 ++--- .../bindings/iio/adc/ti,ads131e08.yaml | 7 ++--- .../bindings/iio/adc/ti,ads8344.yaml | 7 ++--- .../bindings/iio/adc/ti,ads8688.yaml | 7 ++--- .../bindings/iio/adc/ti,tlc4541.yaml | 7 ++--- .../bindings/iio/adc/ti,tsc2046.yaml | 7 ++--- 30 files changed, 131 insertions(+), 93 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml index fb3d0dae9bae..75a7184a4735 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml @@ -52,8 +52,6 @@ properties: avdd-supply: description: avdd supply can be used as reference for conversion. - spi-max-frequency: true - required: - compatible - reg @@ -106,7 +104,10 @@ patternProperties: additionalProperties: false -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml index 22b7ed3723f6..cc347dade4ef 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml @@ -30,8 +30,6 @@ properties: spi-cpha: true - spi-max-frequency: true - clocks: maxItems: 1 description: phandle to the master clock (mclk) @@ -94,7 +92,10 @@ required: - spi-cpol - spi-cpha -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml index a694d5794d4a..dfb8f305e2f0 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml @@ -28,8 +28,6 @@ properties: description: IRQ line for the ADC maxItems: 1 - spi-max-frequency: true - adi,voltage-alert-last-chan: $ref: /schemas/types.yaml#/definitions/uint32 description: @@ -55,7 +53,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml index a3e39a40c9b3..1bfbeed6f299 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml @@ -30,8 +30,6 @@ properties: spi-cpha: true - spi-max-frequency: true - '#address-cells': const: 1 @@ -65,7 +63,10 @@ patternProperties: additionalProperties: true -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7298.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7298.yaml index ca414bb396c5..cd8ac5162d27 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7298.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7298.yaml @@ -24,13 +24,15 @@ properties: vref-supply: true vdd-supply: true - spi-max-frequency: true required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml index 666414a9c0de..44c671eeda73 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml @@ -66,8 +66,6 @@ properties: to the other supplies. Needed to be able to establish channel scaling unless there is also an internal reference available (e.g. ad7091r) - spi-max-frequency: true - adi,conversion-start-gpios: description: A GPIO used to trigger the start of a conversion maxItems: 1 @@ -76,9 +74,9 @@ required: - compatible - reg -additionalProperties: false - allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + # Devices where reference is vcc - if: properties: @@ -158,6 +156,8 @@ allOf: properties: adi,conversion-start-gpios: false +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml index 516fc24d3346..ac5a47c8f070 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml @@ -32,8 +32,6 @@ properties: spi-cpol: true - spi-max-frequency: true - avcc-supply: true interrupts: @@ -105,7 +103,10 @@ required: - interrupts - adi,conversion-start-gpios -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml index a85a28145ef6..3ce59d4d065f 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml @@ -50,8 +50,6 @@ properties: reset-gpios: maxItems: 1 - spi-max-frequency: true - spi-cpol: true spi-cpha: true @@ -88,7 +86,10 @@ patternProperties: - reg additionalProperties: false -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml index 82168b1495eb..40b0a887db57 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml @@ -42,13 +42,14 @@ properties: '#size-cells': const: 0 - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml index 0b10ed5f74ae..9ee4d977c5ed 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml @@ -49,8 +49,6 @@ properties: default: 4096000 - spi-max-frequency: true - '#io-channel-cells': const: 1 @@ -64,7 +62,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/holt,hi8435.yaml b/Documentation/devicetree/bindings/iio/adc/holt,hi8435.yaml index 52490cbb0af0..56bcbe5dcd79 100644 --- a/Documentation/devicetree/bindings/iio/adc/holt,hi8435.yaml +++ b/Documentation/devicetree/bindings/iio/adc/holt,hi8435.yaml @@ -24,8 +24,6 @@ properties: GPIO used for controlling the reset pin maxItems: 1 - spi-max-frequency: true - "#io-channel-cells": const: 1 @@ -33,7 +31,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/lltc,ltc2496.yaml b/Documentation/devicetree/bindings/iio/adc/lltc,ltc2496.yaml index 0bd2fc0356c8..5207c919abe0 100644 --- a/Documentation/devicetree/bindings/iio/adc/lltc,ltc2496.yaml +++ b/Documentation/devicetree/bindings/iio/adc/lltc,ltc2496.yaml @@ -22,15 +22,15 @@ properties: reg: maxItems: 1 - spi-max-frequency: - description: maximal spi bus frequency supported - required: - compatible - vref-supply - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max1027.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max1027.yaml index 46b7747076b9..d0a7ed26d9ea 100644 --- a/Documentation/devicetree/bindings/iio/adc/maxim,max1027.yaml +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max1027.yaml @@ -45,7 +45,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max11100.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max11100.yaml index 0cf87556ef82..4f74cb33383a 100644 --- a/Documentation/devicetree/bindings/iio/adc/maxim,max11100.yaml +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max11100.yaml @@ -26,13 +26,16 @@ properties: minimum: 100000 maximum: 4800000 -additionalProperties: false - required: - compatible - reg - vref-supply +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max1118.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max1118.yaml index e948b3e37b0c..bb336e33ebe2 100644 --- a/Documentation/devicetree/bindings/iio/adc/maxim,max1118.yaml +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max1118.yaml @@ -28,23 +28,25 @@ properties: vref-supply: description: External reference, needed to establish input scaling -if: - properties: - compatible: - contains: - const: maxim,max1118 -then: - required: - - vref-supply -else: - properties: - vref-supply: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + - if: + properties: + compatible: + contains: + const: maxim,max1118 + then: + required: + - vref-supply + else: + properties: + vref-supply: false required: - compatible - reg -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max1241.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max1241.yaml index 4c7e0d94bff1..58b12fe8070c 100644 --- a/Documentation/devicetree/bindings/iio/adc/maxim,max1241.yaml +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max1241.yaml @@ -39,15 +39,16 @@ properties: thus enabling power-down mode. maxItems: 1 - spi-max-frequency: true - required: - compatible - reg - vdd-supply - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml index fcc1ba53b20d..18108f0f3731 100644 --- a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml +++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml @@ -32,7 +32,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true spi-cpha: true spi-cpol: true @@ -51,7 +50,10 @@ required: - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml index 95ab285f4eba..067a7bbadab8 100644 --- a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml +++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml @@ -51,7 +51,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc0832.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc0832.yaml index f5a923cc847f..686721176a58 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,adc0832.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,adc0832.yaml @@ -24,8 +24,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: description: External reference, needed to establish input scaling @@ -37,7 +35,10 @@ required: - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml index 1a113b30a414..726d2cbfa368 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml @@ -19,8 +19,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: description: External reference, needed to establish input scaling @@ -37,7 +35,10 @@ required: - spi-cpol - spi-cpha -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc108s102.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc108s102.yaml index ae5ce60987fe..9b072b057f16 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,adc108s102.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,adc108s102.yaml @@ -19,7 +19,6 @@ properties: reg: true vref-supply: true - spi-max-frequency: true "#io-channel-cells": const: 1 @@ -28,7 +27,10 @@ required: - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc12138.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc12138.yaml index ec3b2edf1fb7..076088a328c3 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,adc12138.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,adc12138.yaml @@ -31,8 +31,6 @@ properties: maxItems: 1 description: Conversion clock input. - spi-max-frequency: true - vref-p-supply: description: The regulator supply for positive analog voltage reference @@ -62,7 +60,10 @@ required: - clocks - vref-p-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml index d54a0183f024..775eee972b12 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml @@ -27,8 +27,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: true "#io-channel-cells": @@ -39,7 +37,10 @@ required: - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc161s626.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc161s626.yaml index 3f4f334d6f73..afe782522904 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,adc161s626.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,adc161s626.yaml @@ -21,8 +21,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vdda-supply: true "#io-channel-cells": @@ -32,7 +30,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml index 2e6abc9d746a..56a3f1766aab 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml @@ -18,8 +18,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - spi-cpha: true reset-gpios: @@ -32,7 +30,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml index 2876397fc668..55c2c73626f4 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml @@ -28,8 +28,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - spi-cpha: true clocks: @@ -120,7 +118,10 @@ patternProperties: additionalProperties: false -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads8344.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads8344.yaml index b8c398187d5c..f75b2c702986 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,ads8344.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads8344.yaml @@ -19,8 +19,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: description: Supply the 2.5V or 5V reference voltage @@ -32,7 +30,10 @@ required: - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads8688.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads8688.yaml index a0af4b24877f..f26fdbc15f84 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,ads8688.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads8688.yaml @@ -25,13 +25,14 @@ properties: description: Optional external reference. If not supplied, assume REFSEL input tied low to enable the internal reference. - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,tlc4541.yaml b/Documentation/devicetree/bindings/iio/adc/ti,tlc4541.yaml index 6c2539b3d707..314d1d99bf73 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,tlc4541.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,tlc4541.yaml @@ -21,8 +21,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: true "#io-channel-cells": @@ -33,7 +31,10 @@ required: - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml b/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml index 601d69971d84..0b48814c0dc2 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml @@ -23,8 +23,6 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - "#io-channel-cells": const: 1 @@ -59,7 +57,10 @@ patternProperties: additionalProperties: false -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | From 5f72930016202ca44ef0f4502d14e9054fbb3644 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:13 +0300 Subject: [PATCH 107/142] dt-bindings: iio: accel: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-3-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/accel/adi,adis16201.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/adi,adis16240.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/adi,adxl313.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/adi,adxl345.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/adi,adxl355.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/adi,adxl367.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/adi,adxl372.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/bosch,bma220.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/bosch,bma255.yaml | 5 ++++- .../devicetree/bindings/iio/accel/bosch,bmi088.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/fsl,mma7455.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/kionix,kxsd9.yaml | 7 ++++--- .../devicetree/bindings/iio/accel/murata,sca3300.yaml | 5 ++++- .../devicetree/bindings/iio/accel/nxp,fxls8962af.yaml | 7 ++++--- 14 files changed, 56 insertions(+), 38 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml index 6f8f8a6258fe..7332442e5661 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml @@ -27,15 +27,16 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - vdd-supply: true required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adis16240.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adis16240.yaml index 8d829ef878bc..f6f97164c2ca 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adis16240.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adis16240.yaml @@ -25,14 +25,15 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - required: - compatible - reg - interrupts -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl313.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl313.yaml index d6afc1b8c272..05fa7af409cc 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adxl313.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl313.yaml @@ -24,8 +24,6 @@ properties: spi-3wire: true - spi-max-frequency: true - vs-supply: description: Regulator that supplies power to the accelerometer @@ -48,7 +46,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml index 9bb039e2f533..346abfb13a3a 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml @@ -32,8 +32,6 @@ properties: spi-cpol: true - spi-max-frequency: true - interrupts: maxItems: 1 @@ -42,7 +40,10 @@ required: - reg - interrupts -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl355.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl355.yaml index ba54d6998f2e..14b487088ab4 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adxl355.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl355.yaml @@ -45,13 +45,14 @@ properties: vddio-supply: description: Regulator that provides power to the bus - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml index d259e796c1d6..f10d98d34cb8 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml @@ -35,8 +35,6 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - vdd-supply: true vddio-supply: true @@ -45,7 +43,10 @@ required: - reg - interrupts -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml index 38b59b6454ce..73a5c8f814cc 100644 --- a/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml @@ -25,14 +25,15 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - required: - compatible - reg - interrupts -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/bosch,bma220.yaml b/Documentation/devicetree/bindings/iio/accel/bosch,bma220.yaml index 942b23ad0712..5dd06f5905b4 100644 --- a/Documentation/devicetree/bindings/iio/accel/bosch,bma220.yaml +++ b/Documentation/devicetree/bindings/iio/accel/bosch,bma220.yaml @@ -20,8 +20,6 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - vdda-supply: true vddd-supply: true vddio-supply: true @@ -30,7 +28,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml b/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml index 478e75ae0885..457a709b583c 100644 --- a/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml +++ b/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml @@ -72,7 +72,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/bosch,bmi088.yaml b/Documentation/devicetree/bindings/iio/accel/bosch,bmi088.yaml index 272eb48eef5a..3cb82576d758 100644 --- a/Documentation/devicetree/bindings/iio/accel/bosch,bmi088.yaml +++ b/Documentation/devicetree/bindings/iio/accel/bosch,bmi088.yaml @@ -24,8 +24,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vdd-supply: true vddio-supply: true @@ -50,7 +48,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/fsl,mma7455.yaml b/Documentation/devicetree/bindings/iio/accel/fsl,mma7455.yaml index 9c7c66feeffc..c8659c5eba2a 100644 --- a/Documentation/devicetree/bindings/iio/accel/fsl,mma7455.yaml +++ b/Documentation/devicetree/bindings/iio/accel/fsl,mma7455.yaml @@ -39,13 +39,14 @@ properties: - "INT1" - "INT2" - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.yaml b/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.yaml index 390b87242fcb..f64d99b35492 100644 --- a/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.yaml +++ b/Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.yaml @@ -29,13 +29,14 @@ properties: mount-matrix: description: an optional 3x3 mounting rotation matrix. - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/murata,sca3300.yaml b/Documentation/devicetree/bindings/iio/accel/murata,sca3300.yaml index f6e2a16a710b..00c990caa1e4 100644 --- a/Documentation/devicetree/bindings/iio/accel/murata,sca3300.yaml +++ b/Documentation/devicetree/bindings/iio/accel/murata,sca3300.yaml @@ -29,7 +29,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/accel/nxp,fxls8962af.yaml b/Documentation/devicetree/bindings/iio/accel/nxp,fxls8962af.yaml index ad529ab2c6e2..65ce8ea14b52 100644 --- a/Documentation/devicetree/bindings/iio/accel/nxp,fxls8962af.yaml +++ b/Documentation/devicetree/bindings/iio/accel/nxp,fxls8962af.yaml @@ -27,8 +27,6 @@ properties: vdd-supply: description: phandle to the regulator that provides power to the accelerometer - spi-max-frequency: true - interrupts: maxItems: 1 @@ -44,7 +42,10 @@ required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | From 1deca207e1544a1683e300cd6c3a71e46c7b58ef Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:14 +0300 Subject: [PATCH 108/142] dt-bindings: iio: amplifiers: adi,ada4250: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-4-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/amplifiers/adi,ada4250.yaml | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,ada4250.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,ada4250.yaml index 5277479be382..c15da155d300 100644 --- a/Documentation/devicetree/bindings/iio/amplifiers/adi,ada4250.yaml +++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,ada4250.yaml @@ -27,14 +27,15 @@ properties: Enable internal buffer to drive the reference pin. type: boolean - spi-max-frequency: true - required: - compatible - reg - avdd-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | From 25d0469946c3b528c34ef517dd57f6d4b5595e99 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:15 +0300 Subject: [PATCH 109/142] dt-bindings: iio: dac: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-5-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/dac/adi,ad5064.yaml | 7 +++---- .../devicetree/bindings/iio/dac/adi,ad5360.yaml | 7 +++---- .../devicetree/bindings/iio/dac/adi,ad5380.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/adi,ad5421.yaml | 7 ++++--- .../devicetree/bindings/iio/dac/adi,ad5449.yaml | 7 +++---- .../devicetree/bindings/iio/dac/adi,ad5624r.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/adi,ad5686.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/adi,ad5755.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/adi,ad5758.yaml | 4 ++-- .../devicetree/bindings/iio/dac/adi,ad5761.yaml | 7 +++---- .../devicetree/bindings/iio/dac/adi,ad5764.yaml | 7 +++---- .../devicetree/bindings/iio/dac/adi,ad5770r.yaml | 7 ++++--- .../devicetree/bindings/iio/dac/adi,ad5791.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/adi,ad8801.yaml | 7 +++---- .../devicetree/bindings/iio/dac/microchip,mcp4922.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/ti,dac082s085.yaml | 9 +++++---- .../devicetree/bindings/iio/dac/ti,dac7311.yaml | 7 ++++--- .../devicetree/bindings/iio/dac/ti,dac7612.yaml | 7 ++++--- 18 files changed, 71 insertions(+), 66 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5064.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5064.yaml index 05ed4e0ec364..c04165fa9259 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5064.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5064.yaml @@ -95,15 +95,12 @@ properties: vrefD-supply: true vref-supply: true - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - # Shared external vref, no internal reference if: properties: @@ -232,6 +229,8 @@ allOf: - vrefA-supply - vrefB-supply +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5360.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5360.yaml index 65f86f26947c..86e2884cdfb1 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5360.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5360.yaml @@ -28,10 +28,6 @@ properties: vref1-supply: true vref2-supply: true - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg @@ -39,6 +35,7 @@ required: - vref1-supply allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: compatible: @@ -63,6 +60,8 @@ allOf: required: - vref2-supply +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5380.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5380.yaml index d599b418a020..ff50c72c62b5 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5380.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5380.yaml @@ -39,14 +39,15 @@ properties: description: If not supplied devices will use internal regulators. - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5421.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5421.yaml index 188f656617e3..52d089ebde95 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5421.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5421.yaml @@ -26,13 +26,14 @@ properties: maxItems: 1 description: Fault signal. - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5449.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5449.yaml index 044332c97743..d2af2d491986 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5449.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5449.yaml @@ -27,19 +27,16 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - VREF-supply: true VREFA-supply: true VREFB-supply: true -additionalProperties: false - required: - compatible - reg allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: compatible: @@ -72,6 +69,8 @@ allOf: - VREFA-supply - VREFB-supply +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5624r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5624r.yaml index 330383b85eeb..4d5111a5f9bd 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5624r.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5624r.yaml @@ -22,17 +22,18 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: description: If not present, internal reference will be used. -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml index 5c26441eae9f..13f214234b8e 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml @@ -53,14 +53,15 @@ properties: vcc-supply: description: If not supplied the internal reference is used. - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml index f866b88e1440..9a3c2926bf85 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml @@ -25,8 +25,6 @@ properties: description: Either this or spi-cpol but not both. spi-cpol: true - spi-max-frequency: true - adi,ext-dc-dc-compenstation-resistor: $ref: /schemas/types.yaml#/definitions/flag description: @@ -67,8 +65,6 @@ required: - compatible - reg -additionalProperties: false - patternProperties: "^channel@[0-7]$": type: object @@ -123,6 +119,11 @@ oneOf: - required: - spi-cpol +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml index fd4edca34a28..e49e7556175d 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml @@ -16,7 +16,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true spi-cpha: true adi,dc-dc-mode: @@ -99,6 +98,7 @@ required: - adi,dc-dc-mode allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: adi,dc-dc-mode: @@ -115,7 +115,7 @@ allOf: required: - adi,range-microvolt -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5761.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5761.yaml index 7f95a9ed55fe..df550b5af2f7 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5761.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5761.yaml @@ -22,18 +22,15 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: description: If not supplied, internal reference will be used. -additionalProperties: false - required: - compatible - reg allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: compatible: @@ -45,6 +42,8 @@ allOf: required: - vref-supply +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5764.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5764.yaml index 8e893d52bfb1..0b409a727a43 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5764.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5764.yaml @@ -22,18 +22,15 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vrefAB-supply: true vrefCD-supply: true -additionalProperties: false - required: - compatible - reg allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: compatible: @@ -46,6 +43,8 @@ allOf: - vrefAB-supply - vrefCD-supply +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml index 24ac40180ac1..ca5432ffdedb 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml @@ -49,8 +49,6 @@ properties: asserted during driver probe. maxItems: 1 - spi-max-frequency: true - '#address-cells': const: 1 @@ -138,7 +136,10 @@ required: - channel@4 - channel@5 -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml index 650d1ebdcec3..3a84739736f6 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml @@ -23,19 +23,20 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vdd-supply: true vss-supply: true -additionalProperties: false - required: - compatible - reg - vdd-supply - vss-supply +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad8801.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad8801.yaml index 6a3990a8d0ad..1849a2ff05c7 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad8801.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad8801.yaml @@ -19,19 +19,16 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vrefh-supply: true vrefl-supply: true -additionalProperties: false - required: - compatible - reg - vrefh-supply allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: compatible: @@ -44,6 +41,8 @@ allOf: properties: vrefl-supply: false +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml index 4c430abcdbf9..19374401e509 100644 --- a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml +++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml @@ -21,17 +21,18 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - vref-supply: true -additionalProperties: false - required: - compatible - reg - vref-supply +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml index b0157050f1ee..201b04af2b22 100644 --- a/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml +++ b/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml @@ -33,21 +33,22 @@ properties: vref-supply: description: Needed to provide output scaling. - spi-max-frequency: true - required: - compatible - reg - vref-supply -additionalProperties: false - oneOf: - required: - spi-cpha - required: - spi-cpol +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | vref_2v5_reg: regulator-vref { diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac7311.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac7311.yaml index 10be98d1f19c..a6814587dbc4 100644 --- a/Documentation/devicetree/bindings/iio/dac/ti,dac7311.yaml +++ b/Documentation/devicetree/bindings/iio/dac/ti,dac7311.yaml @@ -24,14 +24,15 @@ properties: Reference voltage must be supplied to establish the scaling of the output voltage. - spi-max-frequency: true - required: - compatible - reg - vref-supply -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml index d172b142f6ed..20dd1370660d 100644 --- a/Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml +++ b/Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml @@ -29,13 +29,14 @@ properties: DACs are loaded when the pin connected to this GPIO is pulled low. maxItems: 1 - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | From 3e03f90fe0b6d08142e0934eb7db6c26a509b505 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:16 +0300 Subject: [PATCH 110/142] dt-bindings: iio: frequency: adf4371: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-6-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/frequency/adf4371.yaml | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml b/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml index 6b3a611e1cf1..0144f74a4768 100644 --- a/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml +++ b/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml @@ -40,15 +40,16 @@ properties: output stage will shut down until the ADF4371/ADF4372 achieves lock as measured by the digital lock detect circuitry. - spi-max-frequency: true - required: - compatible - reg - clocks - clock-names -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | From d9ca9d28068a151471141dd1b0ddbf272c2364ac Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:17 +0300 Subject: [PATCH 111/142] dt-bindings: iio: health: ti,afe4403: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-7-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/health/ti,afe4403.yaml | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/health/ti,afe4403.yaml b/Documentation/devicetree/bindings/iio/health/ti,afe4403.yaml index d861526c5c42..6c5ad426a016 100644 --- a/Documentation/devicetree/bindings/iio/health/ti,afe4403.yaml +++ b/Documentation/devicetree/bindings/iio/health/ti,afe4403.yaml @@ -25,14 +25,15 @@ properties: reset-gpios: true - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | #include From 8d98a8c6b0520aeaef1f0be6cbcadece65f855e9 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:18 +0300 Subject: [PATCH 112/142] dt-bindings: iio: imu: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-8-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/imu/adi,adis16460.yaml | 7 ++++--- .../devicetree/bindings/iio/imu/adi,adis16480.yaml | 9 +++++---- .../devicetree/bindings/iio/imu/bosch,bmi160.yaml | 7 ++++--- .../devicetree/bindings/iio/imu/invensense,icm42600.yaml | 6 ++++-- .../devicetree/bindings/iio/imu/invensense,mpu6050.yaml | 5 ++--- .../devicetree/bindings/iio/imu/nxp,fxos8700.yaml | 7 ++++--- .../devicetree/bindings/iio/imu/st,lsm6dsx.yaml | 9 +++++---- 7 files changed, 28 insertions(+), 22 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml index 340be256f283..d166dbca18c3 100644 --- a/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml +++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml @@ -25,8 +25,6 @@ properties: spi-cpol: true - spi-max-frequency: true - interrupts: maxItems: 1 @@ -35,7 +33,10 @@ required: - reg - interrupts -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml index dd29dc6c4c19..56e0dc20f5e4 100644 --- a/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml +++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml @@ -47,8 +47,6 @@ properties: - DIO3 - DIO4 - spi-max-frequency: true - spi-cpha: true spi-cpol: true @@ -96,8 +94,6 @@ properties: - DIO3 - DIO4 -additionalProperties: false - required: - compatible - reg @@ -106,6 +102,11 @@ required: - spi-cpol - spi-max-frequency +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | #include diff --git a/Documentation/devicetree/bindings/iio/imu/bosch,bmi160.yaml b/Documentation/devicetree/bindings/iio/imu/bosch,bmi160.yaml index 6e73cd889b5c..a0760382548d 100644 --- a/Documentation/devicetree/bindings/iio/imu/bosch,bmi160.yaml +++ b/Documentation/devicetree/bindings/iio/imu/bosch,bmi160.yaml @@ -46,13 +46,14 @@ properties: mount-matrix: description: an optional 3x3 mounting rotation matrix - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml index 4c1c083d0e92..488349755c99 100644 --- a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml +++ b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml @@ -47,7 +47,6 @@ properties: vddio-supply: description: Regulator that provides power to the bus - spi-max-frequency: true spi-cpha: true spi-cpol: true @@ -56,7 +55,10 @@ required: - reg - interrupts -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml index 3ebc6526d82d..ec64d7877fe5 100644 --- a/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml +++ b/Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml @@ -40,8 +40,6 @@ properties: interrupts: maxItems: 1 - spi-max-frequency: true - vdd-supply: true vddio-supply: true @@ -54,6 +52,7 @@ properties: These devices also support an auxiliary i2c bus via an i2c-gate. allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: not: properties: @@ -67,7 +66,7 @@ allOf: properties: i2c-gate: false -additionalProperties: false +unevaluatedProperties: false required: - compatible diff --git a/Documentation/devicetree/bindings/iio/imu/nxp,fxos8700.yaml b/Documentation/devicetree/bindings/iio/imu/nxp,fxos8700.yaml index 0203b83b8587..24416b59b782 100644 --- a/Documentation/devicetree/bindings/iio/imu/nxp,fxos8700.yaml +++ b/Documentation/devicetree/bindings/iio/imu/nxp,fxos8700.yaml @@ -36,13 +36,14 @@ properties: drive-open-drain: type: boolean - spi-max-frequency: true - required: - compatible - reg -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml b/Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml index 5d4839f00898..0ceb29fb01b7 100644 --- a/Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml +++ b/Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml @@ -45,8 +45,6 @@ properties: description: Supports up to 2 interrupt lines via the INT1 and INT2 pins. - spi-max-frequency: true - vdd-supply: description: if defined provides VDD power to the sensor. @@ -81,12 +79,15 @@ properties: wakeup-source: $ref: /schemas/types.yaml#/definitions/flag -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | #include From efcdb1ab5030f231e377ac241fda83e1d3a126ed Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:19 +0300 Subject: [PATCH 113/142] dt-bindings: iio: potentiometer: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-9-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../bindings/iio/potentiometer/microchip,mcp41010.yaml | 9 +++++---- .../bindings/iio/potentiometer/microchip,mcp4131.yaml | 9 +++++---- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp41010.yaml b/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp41010.yaml index 567697d996ec..87e88f2a9908 100644 --- a/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp41010.yaml +++ b/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp41010.yaml @@ -25,14 +25,15 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml b/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml index 32e92bced81f..896fe0b5edcc 100644 --- a/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml +++ b/Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml @@ -80,14 +80,15 @@ properties: reg: maxItems: 1 - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { From 6920f48efd58596af8e58ad5c861bd15726165e7 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:20 +0300 Subject: [PATCH 114/142] dt-bindings: iio: samsung,sensorhub-rinato: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-10-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../bindings/iio/samsung,sensorhub-rinato.yaml | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/samsung,sensorhub-rinato.yaml b/Documentation/devicetree/bindings/iio/samsung,sensorhub-rinato.yaml index a88b3b14d6bd..dd2ae2bd1ad7 100644 --- a/Documentation/devicetree/bindings/iio/samsung,sensorhub-rinato.yaml +++ b/Documentation/devicetree/bindings/iio/samsung,sensorhub-rinato.yaml @@ -40,10 +40,6 @@ properties: description: Reset the sensorhub. - spi-max-frequency: true - -additionalProperties: false - required: - compatible - reg @@ -52,6 +48,11 @@ required: - mcu-ap-gpios - mcu-reset-gpios +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + examples: - | spi { From 14a4d22ead0d9c01a6d7e9cb7f1d321dd29d354b Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 16 Aug 2022 15:43:21 +0300 Subject: [PATCH 115/142] dt-bindings: iio: temperature: use spi-peripheral-props.yaml Instead of listing directly properties typical for SPI peripherals, reference the spi-peripheral-props.yaml schema. This allows using all properties typical for SPI-connected devices, even these which device bindings author did not tried yet. Remove the spi-* properties which now come via spi-peripheral-props.yaml schema, except for the cases when device schema adds some constraints like maximum frequency. While changing additionalProperties->unevaluatedProperties, put it in typical place, just before example DTS. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220816124321.67817-11-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../bindings/iio/temperature/maxim,max31855k.yaml | 4 ++-- .../devicetree/bindings/iio/temperature/maxim,max31856.yaml | 6 ++++-- .../devicetree/bindings/iio/temperature/maxim,max31865.yaml | 6 ++++-- 3 files changed, 10 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml index 9969bac66aa1..0805ed7e2113 100644 --- a/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml +++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml @@ -32,7 +32,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true spi-cpha: true required: @@ -40,6 +39,7 @@ required: - reg allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# - if: properties: compatible: @@ -53,7 +53,7 @@ allOf: properties: spi-cpha: false -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml index 873b34766676..228a94165487 100644 --- a/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml +++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml @@ -19,7 +19,6 @@ properties: reg: maxItems: 1 - spi-max-frequency: true spi-cpha: true thermocouple-type: @@ -34,7 +33,10 @@ required: - reg - spi-cpha -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml index aafb33b16549..a2823ed6867b 100644 --- a/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml +++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml @@ -25,7 +25,6 @@ properties: enables 3-wire RTD connection. Else 2-wire or 4-wire RTD connection. type: boolean - spi-max-frequency: true spi-cpha: true required: @@ -33,7 +32,10 @@ required: - reg - spi-cpha -additionalProperties: false +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false examples: - | From 83856aaab45da0fd34f94aac0371ba80668c1dbc Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 13 Aug 2022 17:06:00 +0100 Subject: [PATCH 116/142] staging: iio: frequency: ad9832: Fix alignment for DMA safety ____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. Whilst here, move the marking to cover the whole union. That has no functional affect, but makes it slightly easier to see what is going on. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220813160600.1157169-1-jic23@kernel.org --- drivers/staging/iio/frequency/ad9832.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c index f43464db618a..6f9eebd6c7ee 100644 --- a/drivers/staging/iio/frequency/ad9832.c +++ b/drivers/staging/iio/frequency/ad9832.c @@ -112,10 +112,10 @@ struct ad9832_state { * transfer buffers to live in their own cache lines. */ union { - __be16 freq_data[4]____cacheline_aligned; + __be16 freq_data[4]; __be16 phase_data[2]; __be16 data; - }; + } __aligned(IIO_DMA_MINALIGN); }; static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout) From 955c2aa9cff2dd07ff798ca8c883398731687972 Mon Sep 17 00:00:00 2001 From: William Breathitt Gray Date: Mon, 15 Aug 2022 18:29:21 -0400 Subject: [PATCH 117/142] iio: stx104: Move to addac subdirectory The stx104 driver supports both ADC and DAC functionality. Signed-off-by: William Breathitt Gray Link: https://lore.kernel.org/r/20220815222921.138945-1-william.gray@linaro.org Signed-off-by: Jonathan Cameron --- MAINTAINERS | 2 +- drivers/iio/adc/Kconfig | 16 ---------------- drivers/iio/adc/Makefile | 1 - drivers/iio/addac/Kconfig | 16 ++++++++++++++++ drivers/iio/addac/Makefile | 1 + drivers/iio/{adc => addac}/stx104.c | 0 6 files changed, 18 insertions(+), 18 deletions(-) rename drivers/iio/{adc => addac}/stx104.c (100%) diff --git a/MAINTAINERS b/MAINTAINERS index a88edf508003..7dcae9243256 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1374,7 +1374,7 @@ APEX EMBEDDED SYSTEMS STX104 IIO DRIVER M: William Breathitt Gray L: linux-iio@vger.kernel.org S: Maintained -F: drivers/iio/adc/stx104.c +F: drivers/iio/addac/stx104.c APM DRIVER M: Jiri Kosina diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 5a3e8d9ae26c..e3c2881ed23a 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1037,22 +1037,6 @@ config STMPE_ADC Say yes here to build support for ST Microelectronics STMPE built-in ADC block (stmpe811). -config STX104 - tristate "Apex Embedded Systems STX104 driver" - depends on PC104 && X86 - select ISA_BUS_API - select GPIOLIB - help - Say yes here to build support for the Apex Embedded Systems STX104 - integrated analog PC/104 card. - - This driver supports the 16 channels of single-ended (8 channels of - differential) analog inputs, 2 channels of analog output, 4 digital - inputs, and 4 digital outputs provided by the STX104. - - The base port addresses for the devices may be configured via the base - array module parameter. - config SUN4I_GPADC tristate "Support for the Allwinner SoCs GPADC" depends on IIO diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index c1a861a978ad..ab084094263b 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -89,7 +89,6 @@ obj-$(CONFIG_RICHTEK_RTQ6056) += rtq6056.o obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o obj-$(CONFIG_SPEAR_ADC) += spear_adc.o -obj-$(CONFIG_STX104) += stx104.o obj-$(CONFIG_SUN4I_GPADC) += sun4i-gpadc-iio.o obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o obj-$(CONFIG_STM32_ADC) += stm32-adc.o diff --git a/drivers/iio/addac/Kconfig b/drivers/iio/addac/Kconfig index 138492362f20..fcf6d2269bfc 100644 --- a/drivers/iio/addac/Kconfig +++ b/drivers/iio/addac/Kconfig @@ -17,4 +17,20 @@ config AD74413R To compile this driver as a module, choose M here: the module will be called ad74413r. +config STX104 + tristate "Apex Embedded Systems STX104 driver" + depends on PC104 && X86 + select ISA_BUS_API + select GPIOLIB + help + Say yes here to build support for the Apex Embedded Systems STX104 + integrated analog PC/104 card. + + This driver supports the 16 channels of single-ended (8 channels of + differential) analog inputs, 2 channels of analog output, 4 digital + inputs, and 4 digital outputs provided by the STX104. + + The base port addresses for the devices may be configured via the base + array module parameter. + endmenu diff --git a/drivers/iio/addac/Makefile b/drivers/iio/addac/Makefile index cfd4bbe64ad3..17de20ef0d8e 100644 --- a/drivers/iio/addac/Makefile +++ b/drivers/iio/addac/Makefile @@ -5,3 +5,4 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_AD74413R) += ad74413r.o +obj-$(CONFIG_STX104) += stx104.o diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/addac/stx104.c similarity index 100% rename from drivers/iio/adc/stx104.c rename to drivers/iio/addac/stx104.c From 682ca76bc60ab86824cca1b34bc865bd0094ac7e Mon Sep 17 00:00:00 2001 From: Joe Simmons-Talbott Date: Fri, 19 Aug 2022 14:20:12 -0400 Subject: [PATCH 118/142] iio: Avoid multiple line dereference for mask Prefer lines > 80 characters over splitting dereferences across multiple lines. Reported by checkpatch.pl. Signed-off-by: Joe Simmons-Talbott Link: https://lore.kernel.org/r/20220819182012.219523-1-joetalbott@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 67d3d01d2dac..d38623c046cc 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1303,8 +1303,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, ret = iio_device_add_info_mask_type_avail(indio_dev, chan, IIO_SEPARATE, - &chan-> - info_mask_separate_available); + &chan->info_mask_separate_available); if (ret < 0) return ret; attrcount += ret; @@ -1318,8 +1317,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, ret = iio_device_add_info_mask_type_avail(indio_dev, chan, IIO_SHARED_BY_TYPE, - &chan-> - info_mask_shared_by_type_available); + &chan->info_mask_shared_by_type_available); if (ret < 0) return ret; attrcount += ret; From d2a4cbcb8bdc0e3d1cf85bf47a670695da0bc27a Mon Sep 17 00:00:00 2001 From: Dmitry Rokosov Date: Fri, 12 Aug 2022 16:52:26 +0000 Subject: [PATCH 119/142] units: complement the set of Hz units Currently, Hz units do not have milli, micro and nano Hz coefficients. Some drivers (IIO especially) use their analogues to calculate appropriate Hz values. This patch includes them to units.h definitions, so they can be used from different kernel places. Signed-off-by: Dmitry Rokosov Link: https://lore.kernel.org/r/20220812165243.22177-3-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- include/linux/units.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/units.h b/include/linux/units.h index 681fc652e3d7..2793a41e73a2 100644 --- a/include/linux/units.h +++ b/include/linux/units.h @@ -20,6 +20,9 @@ #define PICO 1000000000000ULL #define FEMTO 1000000000000000ULL +#define NANOHZ_PER_HZ 1000000000UL +#define MICROHZ_PER_HZ 1000000UL +#define MILLIHZ_PER_HZ 1000UL #define HZ_PER_KHZ 1000UL #define KHZ_PER_MHZ 1000UL #define HZ_PER_MHZ 1000000UL From fe49ce7abd6af8c55e58a8b33a7978c9da32ffb2 Mon Sep 17 00:00:00 2001 From: Dmitry Rokosov Date: Fri, 12 Aug 2022 16:52:27 +0000 Subject: [PATCH 120/142] iio: accel: adxl345: use HZ macro from units.h Remove duplicated definition of NHZ_PER_HZ, because it's available in the units.h as NANOHZ_PER_HZ. Signed-off-by: Dmitry Rokosov Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220812165243.22177-4-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index 370bfec1275a..1919e0089c11 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -32,7 +33,6 @@ #define ADXL345_BW_RATE GENMASK(3, 0) #define ADXL345_BASE_RATE_NANO_HZ 97656250LL -#define NHZ_PER_HZ 1000000000LL #define ADXL345_POWER_CTL_MEASURE BIT(3) #define ADXL345_POWER_CTL_STANDBY 0x00 @@ -139,7 +139,7 @@ static int adxl345_read_raw(struct iio_dev *indio_dev, samp_freq_nhz = ADXL345_BASE_RATE_NANO_HZ << (regval & ADXL345_BW_RATE); - *val = div_s64_rem(samp_freq_nhz, NHZ_PER_HZ, val2); + *val = div_s64_rem(samp_freq_nhz, NANOHZ_PER_HZ, val2); return IIO_VAL_INT_PLUS_NANO; } @@ -164,7 +164,8 @@ static int adxl345_write_raw(struct iio_dev *indio_dev, ADXL345_REG_OFS_AXIS(chan->address), val / 4); case IIO_CHAN_INFO_SAMP_FREQ: - n = div_s64(val * NHZ_PER_HZ + val2, ADXL345_BASE_RATE_NANO_HZ); + n = div_s64(val * NANOHZ_PER_HZ + val2, + ADXL345_BASE_RATE_NANO_HZ); return regmap_update_bits(data->regmap, ADXL345_REG_BW_RATE, ADXL345_BW_RATE, From c05c3e5d4e563ac84624c093addee644194984eb Mon Sep 17 00:00:00 2001 From: Dmitry Rokosov Date: Fri, 12 Aug 2022 16:52:27 +0000 Subject: [PATCH 121/142] iio: common: scmi_sensors: use HZ macro from units.h Remove duplicated definition of UHZ_PER_HZ, because it's available in the units.h as MICROHZ_PER_HZ. Signed-off-by: Dmitry Rokosov Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220812165243.22177-5-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- drivers/iio/common/scmi_sensors/scmi_iio.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c index 793d628db55f..54ccf19ab2bb 100644 --- a/drivers/iio/common/scmi_sensors/scmi_iio.c +++ b/drivers/iio/common/scmi_sensors/scmi_iio.c @@ -18,6 +18,7 @@ #include #include #include +#include #define SCMI_IIO_NUM_OF_AXIS 3 @@ -130,7 +131,6 @@ static const struct iio_buffer_setup_ops scmi_iio_buffer_ops = { static int scmi_iio_set_odr_val(struct iio_dev *iio_dev, int val, int val2) { struct scmi_iio_priv *sensor = iio_priv(iio_dev); - const unsigned long UHZ_PER_HZ = 1000000UL; u64 sec, mult, uHz, sf; u32 sensor_config; char buf[32]; @@ -145,7 +145,7 @@ static int scmi_iio_set_odr_val(struct iio_dev *iio_dev, int val, int val2) return err; } - uHz = val * UHZ_PER_HZ + val2; + uHz = val * MICROHZ_PER_HZ + val2; /* * The seconds field in the sensor interval in SCMI is 16 bits long @@ -156,10 +156,10 @@ static int scmi_iio_set_odr_val(struct iio_dev *iio_dev, int val, int val2) * count the number of characters */ sf = (u64)uHz * 0xFFFF; - do_div(sf, UHZ_PER_HZ); + do_div(sf, MICROHZ_PER_HZ); mult = scnprintf(buf, sizeof(buf), "%llu", sf) - 1; - sec = int_pow(10, mult) * UHZ_PER_HZ; + sec = int_pow(10, mult) * MICROHZ_PER_HZ; do_div(sec, uHz); if (sec == 0) { dev_err(&iio_dev->dev, From 1f5d7ea73c4b630dbb2c90818cb9fc0be54d2fe3 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 22 Aug 2022 17:49:23 +0000 Subject: [PATCH 122/142] lib/string_helpers: Add str_read_write() helper Add str_read_write() helper to return 'read' or 'write' string literal. Signed-off-by: Andy Shevchenko Signed-off-by: Dmitry Rokosov Link: https://lore.kernel.org/r/20220822175011.2886-2-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- include/linux/string_helpers.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h index 4d72258d42fd..9e22cd78f3b8 100644 --- a/include/linux/string_helpers.h +++ b/include/linux/string_helpers.h @@ -126,4 +126,9 @@ static inline const char *str_enabled_disabled(bool v) return v ? "enabled" : "disabled"; } +static inline const char *str_read_write(bool v) +{ + return v ? "read" : "write"; +} + #endif From 4905949395850e41912ae89e2d2fa88d2cd36319 Mon Sep 17 00:00:00 2001 From: Dmitry Rokosov Date: Mon, 22 Aug 2022 17:49:24 +0000 Subject: [PATCH 123/142] dt-bindings: vendor-prefixes: add MEMSensing Microsystems Co., Ltd. MEMSensing Microsystems (Suzhou, China) Co., Ltd. operates as a micro electromechanical system technology company which produces micro electromechanical system microphones and sensors. MEMSensing Microsystems (Suzhou, China) Co., Ltd. applies its products in consumer electronics, industrial control, medical electronics and automotive, and other fields. Signed-off-by: Dmitry Rokosov Acked-by: Rob Herring Link: https://lore.kernel.org/r/20220822175011.2886-3-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index 2f0151e9f6be..b1818b4eb972 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -777,6 +777,8 @@ patternProperties: description: MELFAS Inc. "^mellanox,.*": description: Mellanox Technologies + "^memsensing,.*": + description: MEMSensing Microsystems Co., Ltd. "^memsic,.*": description: MEMSIC Inc. "^menlo,.*": From 1ca2cfbc0c337ed3a3c817f84f9fcf0d32203f73 Mon Sep 17 00:00:00 2001 From: Dmitry Rokosov Date: Mon, 22 Aug 2022 17:49:25 +0000 Subject: [PATCH 124/142] iio: add MEMSensing MSA311 3-axis accelerometer driver MSA311 is a tri-axial, low-g accelerometer with I2C digital output for sensitivity consumer applications. It has dynamic user-selectable full scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements with output data rates from 1Hz to 1000Hz. This driver supports following MSA311 features: - IIO interface - Different power modes: NORMAL and SUSPEND (using pm_runtime) - ODR (Output Data Rate) selection - Scale and samp_freq selection - IIO triggered buffer, IIO reg access - NEW_DATA interrupt + trigger Below features to be done: - Motion Events: ACTIVE, TAP, ORIENT, FREEFALL - Low Power mode Datasheet: https://cdn-shop.adafruit.com/product-files/5309/MSA311-V1.1-ENG.pdf Signed-off-by: Dmitry Rokosov Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220822175011.2886-4-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- MAINTAINERS | 6 + drivers/iio/accel/Kconfig | 13 + drivers/iio/accel/Makefile | 2 + drivers/iio/accel/msa311.c | 1321 ++++++++++++++++++++++++++++++++++++ 4 files changed, 1342 insertions(+) create mode 100644 drivers/iio/accel/msa311.c diff --git a/MAINTAINERS b/MAINTAINERS index 7dcae9243256..b8a621941db9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13176,6 +13176,12 @@ F: drivers/mtd/ F: include/linux/mtd/ F: include/uapi/mtd/ +MEMSENSING MICROSYSTEMS MSA311 DRIVER +M: Dmitry Rokosov +L: linux-iio@vger.kernel.org +S: Maintained +F: drivers/iio/accel/msa311.c + MEN A21 WATCHDOG DRIVER M: Johannes Thumshirn L: linux-watchdog@vger.kernel.org diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index 35798712f811..ffac66db7ac9 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -541,6 +541,19 @@ config MMA9553 To compile this driver as a module, choose M here: the module will be called mma9553. +config MSA311 + tristate "MEMSensing Digital 3-Axis Accelerometer Driver" + depends on I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + select REGMAP_I2C + help + Say yes here to build support for the MEMSensing MSA311 + accelerometer driver. + + To compile this driver as a module, choose M here: the module will be + called msa311. + config MXC4005 tristate "Memsic MXC4005XC 3-Axis Accelerometer Driver" depends on I2C diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile index 4d8792668838..5e45b5fa5ab5 100644 --- a/drivers/iio/accel/Makefile +++ b/drivers/iio/accel/Makefile @@ -58,6 +58,8 @@ obj-$(CONFIG_MMA9551_CORE) += mma9551_core.o obj-$(CONFIG_MMA9551) += mma9551.o obj-$(CONFIG_MMA9553) += mma9553.o +obj-$(CONFIG_MSA311) += msa311.o + obj-$(CONFIG_MXC4005) += mxc4005.o obj-$(CONFIG_MXC6255) += mxc6255.o diff --git a/drivers/iio/accel/msa311.c b/drivers/iio/accel/msa311.c new file mode 100644 index 000000000000..2fded3759171 --- /dev/null +++ b/drivers/iio/accel/msa311.c @@ -0,0 +1,1321 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * MEMSensing digital 3-Axis accelerometer + * + * MSA311 is a tri-axial, low-g accelerometer with I2C digital output for + * sensitivity consumer applications. It has dynamic user-selectable full + * scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements + * with output data rates from 1Hz to 1000Hz. + * + * MSA311 is available in an ultra small (2mm x 2mm, height 0.95mm) LGA package + * and is guaranteed to operate over -40C to +85C. + * + * This driver supports following MSA311 features: + * - IIO interface + * - Different power modes: NORMAL, SUSPEND + * - ODR (Output Data Rate) selection + * - Scale selection + * - IIO triggered buffer + * - NEW_DATA interrupt + trigger + * + * Below features to be done: + * - Motion Events: ACTIVE, TAP, ORIENT, FREEFALL + * - Low Power mode + * + * Copyright (c) 2022, SberDevices. All Rights Reserved. + * + * Author: Dmitry Rokosov + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#define MSA311_SOFT_RESET_REG 0x00 +#define MSA311_PARTID_REG 0x01 +#define MSA311_ACC_X_REG 0x02 +#define MSA311_ACC_Y_REG 0x04 +#define MSA311_ACC_Z_REG 0x06 +#define MSA311_MOTION_INT_REG 0x09 +#define MSA311_DATA_INT_REG 0x0A +#define MSA311_TAP_ACTIVE_STS_REG 0x0B +#define MSA311_ORIENT_STS_REG 0x0C +#define MSA311_RANGE_REG 0x0F +#define MSA311_ODR_REG 0x10 +#define MSA311_PWR_MODE_REG 0x11 +#define MSA311_SWAP_POLARITY_REG 0x12 +#define MSA311_INT_SET_0_REG 0x16 +#define MSA311_INT_SET_1_REG 0x17 +#define MSA311_INT_MAP_0_REG 0x19 +#define MSA311_INT_MAP_1_REG 0x1A +#define MSA311_INT_CONFIG_REG 0x20 +#define MSA311_INT_LATCH_REG 0x21 +#define MSA311_FREEFALL_DUR_REG 0x22 +#define MSA311_FREEFALL_TH_REG 0x23 +#define MSA311_FREEFALL_HY_REG 0x24 +#define MSA311_ACTIVE_DUR_REG 0x27 +#define MSA311_ACTIVE_TH_REG 0x28 +#define MSA311_TAP_DUR_REG 0x2A +#define MSA311_TAP_TH_REG 0x2B +#define MSA311_ORIENT_HY_REG 0x2C +#define MSA311_Z_BLOCK_REG 0x2D +#define MSA311_OFFSET_X_REG 0x38 +#define MSA311_OFFSET_Y_REG 0x39 +#define MSA311_OFFSET_Z_REG 0x3A + +enum msa311_fields { + /* Soft_Reset */ + F_SOFT_RESET_I2C, F_SOFT_RESET_SPI, + /* Motion_Interrupt */ + F_ORIENT_INT, F_S_TAP_INT, F_D_TAP_INT, F_ACTIVE_INT, F_FREEFALL_INT, + /* Data_Interrupt */ + F_NEW_DATA_INT, + /* Tap_Active_Status */ + F_TAP_SIGN, F_TAP_FIRST_X, F_TAP_FIRST_Y, F_TAP_FIRST_Z, F_ACTV_SIGN, + F_ACTV_FIRST_X, F_ACTV_FIRST_Y, F_ACTV_FIRST_Z, + /* Orientation_Status */ + F_ORIENT_Z, F_ORIENT_X_Y, + /* Range */ + F_FS, + /* ODR */ + F_X_AXIS_DIS, F_Y_AXIS_DIS, F_Z_AXIS_DIS, F_ODR, + /* Power Mode/Bandwidth */ + F_PWR_MODE, F_LOW_POWER_BW, + /* Swap_Polarity */ + F_X_POLARITY, F_Y_POLARITY, F_Z_POLARITY, F_X_Y_SWAP, + /* Int_Set_0 */ + F_ORIENT_INT_EN, F_S_TAP_INT_EN, F_D_TAP_INT_EN, F_ACTIVE_INT_EN_Z, + F_ACTIVE_INT_EN_Y, F_ACTIVE_INT_EN_X, + /* Int_Set_1 */ + F_NEW_DATA_INT_EN, F_FREEFALL_INT_EN, + /* Int_Map_0 */ + F_INT1_ORIENT, F_INT1_S_TAP, F_INT1_D_TAP, F_INT1_ACTIVE, + F_INT1_FREEFALL, + /* Int_Map_1 */ + F_INT1_NEW_DATA, + /* Int_Config */ + F_INT1_OD, F_INT1_LVL, + /* Int_Latch */ + F_RESET_INT, F_LATCH_INT, + /* Freefall_Hy */ + F_FREEFALL_MODE, F_FREEFALL_HY, + /* Active_Dur */ + F_ACTIVE_DUR, + /* Tap_Dur */ + F_TAP_QUIET, F_TAP_SHOCK, F_TAP_DUR, + /* Tap_Th */ + F_TAP_TH, + /* Orient_Hy */ + F_ORIENT_HYST, F_ORIENT_BLOCKING, F_ORIENT_MODE, + /* Z_Block */ + F_Z_BLOCKING, + /* End of register map */ + F_MAX_FIELDS, +}; + +static const struct reg_field msa311_reg_fields[] = { + /* Soft_Reset */ + [F_SOFT_RESET_I2C] = REG_FIELD(MSA311_SOFT_RESET_REG, 2, 2), + [F_SOFT_RESET_SPI] = REG_FIELD(MSA311_SOFT_RESET_REG, 5, 5), + /* Motion_Interrupt */ + [F_ORIENT_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 6, 6), + [F_S_TAP_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 5, 5), + [F_D_TAP_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 4, 4), + [F_ACTIVE_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 2, 2), + [F_FREEFALL_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 0, 0), + /* Data_Interrupt */ + [F_NEW_DATA_INT] = REG_FIELD(MSA311_DATA_INT_REG, 0, 0), + /* Tap_Active_Status */ + [F_TAP_SIGN] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 7, 7), + [F_TAP_FIRST_X] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 6, 6), + [F_TAP_FIRST_Y] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 5, 5), + [F_TAP_FIRST_Z] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 4, 4), + [F_ACTV_SIGN] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 3, 3), + [F_ACTV_FIRST_X] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 2, 2), + [F_ACTV_FIRST_Y] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 1, 1), + [F_ACTV_FIRST_Z] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 0, 0), + /* Orientation_Status */ + [F_ORIENT_Z] = REG_FIELD(MSA311_ORIENT_STS_REG, 6, 6), + [F_ORIENT_X_Y] = REG_FIELD(MSA311_ORIENT_STS_REG, 4, 5), + /* Range */ + [F_FS] = REG_FIELD(MSA311_RANGE_REG, 0, 1), + /* ODR */ + [F_X_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 7, 7), + [F_Y_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 6, 6), + [F_Z_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 5, 5), + [F_ODR] = REG_FIELD(MSA311_ODR_REG, 0, 3), + /* Power Mode/Bandwidth */ + [F_PWR_MODE] = REG_FIELD(MSA311_PWR_MODE_REG, 6, 7), + [F_LOW_POWER_BW] = REG_FIELD(MSA311_PWR_MODE_REG, 1, 4), + /* Swap_Polarity */ + [F_X_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 3, 3), + [F_Y_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 2, 2), + [F_Z_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 1, 1), + [F_X_Y_SWAP] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 0, 0), + /* Int_Set_0 */ + [F_ORIENT_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 6, 6), + [F_S_TAP_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 5, 5), + [F_D_TAP_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 4, 4), + [F_ACTIVE_INT_EN_Z] = REG_FIELD(MSA311_INT_SET_0_REG, 2, 2), + [F_ACTIVE_INT_EN_Y] = REG_FIELD(MSA311_INT_SET_0_REG, 1, 1), + [F_ACTIVE_INT_EN_X] = REG_FIELD(MSA311_INT_SET_0_REG, 0, 0), + /* Int_Set_1 */ + [F_NEW_DATA_INT_EN] = REG_FIELD(MSA311_INT_SET_1_REG, 4, 4), + [F_FREEFALL_INT_EN] = REG_FIELD(MSA311_INT_SET_1_REG, 3, 3), + /* Int_Map_0 */ + [F_INT1_ORIENT] = REG_FIELD(MSA311_INT_MAP_0_REG, 6, 6), + [F_INT1_S_TAP] = REG_FIELD(MSA311_INT_MAP_0_REG, 5, 5), + [F_INT1_D_TAP] = REG_FIELD(MSA311_INT_MAP_0_REG, 4, 4), + [F_INT1_ACTIVE] = REG_FIELD(MSA311_INT_MAP_0_REG, 2, 2), + [F_INT1_FREEFALL] = REG_FIELD(MSA311_INT_MAP_0_REG, 0, 0), + /* Int_Map_1 */ + [F_INT1_NEW_DATA] = REG_FIELD(MSA311_INT_MAP_1_REG, 0, 0), + /* Int_Config */ + [F_INT1_OD] = REG_FIELD(MSA311_INT_CONFIG_REG, 1, 1), + [F_INT1_LVL] = REG_FIELD(MSA311_INT_CONFIG_REG, 0, 0), + /* Int_Latch */ + [F_RESET_INT] = REG_FIELD(MSA311_INT_LATCH_REG, 7, 7), + [F_LATCH_INT] = REG_FIELD(MSA311_INT_LATCH_REG, 0, 3), + /* Freefall_Hy */ + [F_FREEFALL_MODE] = REG_FIELD(MSA311_FREEFALL_HY_REG, 2, 2), + [F_FREEFALL_HY] = REG_FIELD(MSA311_FREEFALL_HY_REG, 0, 1), + /* Active_Dur */ + [F_ACTIVE_DUR] = REG_FIELD(MSA311_ACTIVE_DUR_REG, 0, 1), + /* Tap_Dur */ + [F_TAP_QUIET] = REG_FIELD(MSA311_TAP_DUR_REG, 7, 7), + [F_TAP_SHOCK] = REG_FIELD(MSA311_TAP_DUR_REG, 6, 6), + [F_TAP_DUR] = REG_FIELD(MSA311_TAP_DUR_REG, 0, 2), + /* Tap_Th */ + [F_TAP_TH] = REG_FIELD(MSA311_TAP_TH_REG, 0, 4), + /* Orient_Hy */ + [F_ORIENT_HYST] = REG_FIELD(MSA311_ORIENT_HY_REG, 4, 6), + [F_ORIENT_BLOCKING] = REG_FIELD(MSA311_ORIENT_HY_REG, 2, 3), + [F_ORIENT_MODE] = REG_FIELD(MSA311_ORIENT_HY_REG, 0, 1), + /* Z_Block */ + [F_Z_BLOCKING] = REG_FIELD(MSA311_Z_BLOCK_REG, 0, 3), +}; + +#define MSA311_WHO_AM_I 0x13 + +/* + * Possible Full Scale ranges + * + * Axis data is 12-bit signed value, so + * + * fs0 = (2 + 2) * 9.81 / (2^11) = 0.009580 + * fs1 = (4 + 4) * 9.81 / (2^11) = 0.019160 + * fs2 = (8 + 8) * 9.81 / (2^11) = 0.038320 + * fs3 = (16 + 16) * 9.81 / (2^11) = 0.076641 + */ +enum { + MSA311_FS_2G, + MSA311_FS_4G, + MSA311_FS_8G, + MSA311_FS_16G, +}; + +struct iio_decimal_fract { + int integral; + int microfract; +}; + +static const struct iio_decimal_fract msa311_fs_table[] = { + {0, 9580}, {0, 19160}, {0, 38320}, {0, 76641}, +}; + +/* Possible Output Data Rate values */ +enum { + MSA311_ODR_1_HZ, + MSA311_ODR_1_95_HZ, + MSA311_ODR_3_9_HZ, + MSA311_ODR_7_81_HZ, + MSA311_ODR_15_63_HZ, + MSA311_ODR_31_25_HZ, + MSA311_ODR_62_5_HZ, + MSA311_ODR_125_HZ, + MSA311_ODR_250_HZ, + MSA311_ODR_500_HZ, + MSA311_ODR_1000_HZ, +}; + +static const struct iio_decimal_fract msa311_odr_table[] = { + {1, 0}, {1, 950000}, {3, 900000}, {7, 810000}, {15, 630000}, + {31, 250000}, {62, 500000}, {125, 0}, {250, 0}, {500, 0}, {1000, 0}, +}; + +/* All supported power modes */ +#define MSA311_PWR_MODE_NORMAL 0b00 +#define MSA311_PWR_MODE_LOW 0b01 +#define MSA311_PWR_MODE_UNKNOWN 0b10 +#define MSA311_PWR_MODE_SUSPEND 0b11 +static const char * const msa311_pwr_modes[] = { + [MSA311_PWR_MODE_NORMAL] = "normal", + [MSA311_PWR_MODE_LOW] = "low", + [MSA311_PWR_MODE_UNKNOWN] = "unknown", + [MSA311_PWR_MODE_SUSPEND] = "suspend", +}; + +/* Autosuspend delay */ +#define MSA311_PWR_SLEEP_DELAY_MS 2000 + +/* Possible INT1 types and levels */ +enum { + MSA311_INT1_OD_PUSH_PULL, + MSA311_INT1_OD_OPEN_DRAIN, +}; + +enum { + MSA311_INT1_LVL_LOW, + MSA311_INT1_LVL_HIGH, +}; + +/* Latch INT modes */ +#define MSA311_LATCH_INT_NOT_LATCHED 0b0000 +#define MSA311_LATCH_INT_250MS 0b0001 +#define MSA311_LATCH_INT_500MS 0b0010 +#define MSA311_LATCH_INT_1S 0b0011 +#define MSA311_LATCH_INT_2S 0b0100 +#define MSA311_LATCH_INT_4S 0b0101 +#define MSA311_LATCH_INT_8S 0b0110 +#define MSA311_LATCH_INT_1MS 0b1010 +#define MSA311_LATCH_INT_2MS 0b1011 +#define MSA311_LATCH_INT_25MS 0b1100 +#define MSA311_LATCH_INT_50MS 0b1101 +#define MSA311_LATCH_INT_100MS 0b1110 +#define MSA311_LATCH_INT_LATCHED 0b0111 + +static const struct regmap_range msa311_readonly_registers[] = { + regmap_reg_range(MSA311_PARTID_REG, MSA311_ORIENT_STS_REG), +}; + +static const struct regmap_access_table msa311_writeable_table = { + .no_ranges = msa311_readonly_registers, + .n_no_ranges = ARRAY_SIZE(msa311_readonly_registers), +}; + +static const struct regmap_range msa311_writeonly_registers[] = { + regmap_reg_range(MSA311_SOFT_RESET_REG, MSA311_SOFT_RESET_REG), +}; + +static const struct regmap_access_table msa311_readable_table = { + .no_ranges = msa311_writeonly_registers, + .n_no_ranges = ARRAY_SIZE(msa311_writeonly_registers), +}; + +static const struct regmap_range msa311_volatile_registers[] = { + regmap_reg_range(MSA311_ACC_X_REG, MSA311_ORIENT_STS_REG), +}; + +static const struct regmap_access_table msa311_volatile_table = { + .yes_ranges = msa311_volatile_registers, + .n_yes_ranges = ARRAY_SIZE(msa311_volatile_registers), +}; + +static const struct regmap_config msa311_regmap_config = { + .name = "msa311", + .reg_bits = 8, + .val_bits = 8, + .max_register = MSA311_OFFSET_Z_REG, + .wr_table = &msa311_writeable_table, + .rd_table = &msa311_readable_table, + .volatile_table = &msa311_volatile_table, + .cache_type = REGCACHE_RBTREE, +}; + +#define MSA311_GENMASK(field) ({ \ + typeof(&(msa311_reg_fields)[0]) _field; \ + _field = &msa311_reg_fields[(field)]; \ + GENMASK(_field->msb, _field->lsb); \ +}) + +/** + * struct msa311_priv - MSA311 internal private state + * @regs: Underlying I2C bus adapter used to abstract slave + * register accesses + * @fields: Abstract objects for each registers fields access + * @dev: Device handler associated with appropriate bus client + * @lock: Protects msa311 device state between setup and data access routines + * (power transitions, samp_freq/scale tune, retrieving axes data, etc) + * @chip_name: Chip name in the format "msa311-%02x" % partid + * @new_data_trig: Optional NEW_DATA interrupt driven trigger used + * to notify external consumers a new sample is ready + * @vdd: Optional external voltage regulator for the device power supply + */ +struct msa311_priv { + struct regmap *regs; + struct regmap_field *fields[F_MAX_FIELDS]; + + struct device *dev; + struct mutex lock; + char *chip_name; + + struct iio_trigger *new_data_trig; + struct regulator *vdd; +}; + +enum msa311_si { + MSA311_SI_X, + MSA311_SI_Y, + MSA311_SI_Z, + MSA311_SI_TIMESTAMP, +}; + +#define MSA311_ACCEL_CHANNEL(axis) { \ + .type = IIO_ACCEL, \ + .modified = 1, \ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + .scan_index = MSA311_SI_##axis, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 12, \ + .storagebits = 16, \ + .shift = 4, \ + .endianness = IIO_LE, \ + }, \ + .datasheet_name = "ACC_"#axis, \ +} + +static const struct iio_chan_spec msa311_channels[] = { + MSA311_ACCEL_CHANNEL(X), + MSA311_ACCEL_CHANNEL(Y), + MSA311_ACCEL_CHANNEL(Z), + IIO_CHAN_SOFT_TIMESTAMP(MSA311_SI_TIMESTAMP), +}; + +/** + * msa311_get_odr() - Read Output Data Rate (ODR) value from MSA311 accel + * @msa311: MSA311 internal private state + * @odr: output ODR value + * + * This function should be called under msa311->lock. + * + * Return: 0 on success, -ERRNO in other failures + */ +static int msa311_get_odr(struct msa311_priv *msa311, unsigned int *odr) +{ + int err; + + err = regmap_field_read(msa311->fields[F_ODR], odr); + if (err) + return err; + + /* + * Filter the same 1000Hz ODR register values based on datasheet info. + * ODR can be equal to 1010-1111 for 1000Hz, but function returns 1010 + * all the time. + */ + if (*odr > MSA311_ODR_1000_HZ) + *odr = MSA311_ODR_1000_HZ; + + return 0; +} + +/** + * msa311_set_odr() - Setup Output Data Rate (ODR) value for MSA311 accel + * @msa311: MSA311 internal private state + * @odr: requested ODR value + * + * This function should be called under msa311->lock. Possible ODR values: + * - 1Hz (not available in normal mode) + * - 1.95Hz (not available in normal mode) + * - 3.9Hz + * - 7.81Hz + * - 15.63Hz + * - 31.25Hz + * - 62.5Hz + * - 125Hz + * - 250Hz + * - 500Hz + * - 1000Hz + * + * Return: 0 on success, -EINVAL for bad ODR value in the certain power mode, + * -ERRNO in other failures + */ +static int msa311_set_odr(struct msa311_priv *msa311, unsigned int odr) +{ + struct device *dev = msa311->dev; + unsigned int pwr_mode; + bool good_odr; + int err; + + err = regmap_field_read(msa311->fields[F_PWR_MODE], &pwr_mode); + if (err) + return err; + + /* Filter bad ODR values */ + if (pwr_mode == MSA311_PWR_MODE_NORMAL) + good_odr = (odr > MSA311_ODR_1_95_HZ); + else + good_odr = false; + + if (!good_odr) { + dev_err(dev, + "can't set odr %u.%06uHz, not available in %s mode\n", + msa311_odr_table[odr].integral, + msa311_odr_table[odr].microfract, + msa311_pwr_modes[pwr_mode]); + return -EINVAL; + } + + return regmap_field_write(msa311->fields[F_ODR], odr); +} + +/** + * msa311_wait_for_next_data() - Wait next accel data available after resume + * @msa311: MSA311 internal private state + * + * Return: 0 on success, -EINTR if msleep() was interrupted, + * -ERRNO in other failures + */ +static int msa311_wait_for_next_data(struct msa311_priv *msa311) +{ + static const unsigned int unintr_thresh_ms = 20; + struct device *dev = msa311->dev; + unsigned long freq_uhz; + unsigned long wait_ms; + unsigned int odr; + int err; + + err = msa311_get_odr(msa311, &odr); + if (err) { + dev_err(dev, "can't get actual frequency (%pe)\n", + ERR_PTR(err)); + return err; + } + + /* + * After msa311 resuming is done, we need to wait for data + * to be refreshed by accel logic. + * A certain timeout is calculated based on the current ODR value. + * If requested timeout isn't so long (let's assume 20ms), + * we can wait for next data in uninterruptible sleep. + */ + freq_uhz = msa311_odr_table[odr].integral * MICROHZ_PER_HZ + + msa311_odr_table[odr].microfract; + wait_ms = (MICROHZ_PER_HZ / freq_uhz) * MSEC_PER_SEC; + + if (wait_ms < unintr_thresh_ms) + usleep_range(wait_ms * USEC_PER_MSEC, + unintr_thresh_ms * USEC_PER_MSEC); + else if (msleep_interruptible(wait_ms)) + return -EINTR; + + return 0; +} + +/** + * msa311_set_pwr_mode() - Install certain MSA311 power mode + * @msa311: MSA311 internal private state + * @mode: Power mode can be equal to NORMAL or SUSPEND + * + * This function should be called under msa311->lock. + * + * Return: 0 on success, -ERRNO on failure + */ +static int msa311_set_pwr_mode(struct msa311_priv *msa311, unsigned int mode) +{ + struct device *dev = msa311->dev; + unsigned int prev_mode; + int err; + + if (mode >= ARRAY_SIZE(msa311_pwr_modes)) + return -EINVAL; + + dev_dbg(dev, "transition to %s mode\n", msa311_pwr_modes[mode]); + + err = regmap_field_read(msa311->fields[F_PWR_MODE], &prev_mode); + if (err) + return err; + + err = regmap_field_write(msa311->fields[F_PWR_MODE], mode); + if (err) + return err; + + /* Wait actual data if we wake up */ + if (prev_mode == MSA311_PWR_MODE_SUSPEND && + mode == MSA311_PWR_MODE_NORMAL) + return msa311_wait_for_next_data(msa311); + + return 0; +} + +/** + * msa311_get_axis() - Read MSA311 accel data for certain IIO channel axis spec + * @msa311: MSA311 internal private state + * @chan: IIO channel specification + * @axis: Output accel axis data for requested IIO channel spec + * + * This function should be called under msa311->lock. + * + * Return: 0 on success, -EINVAL for unknown IIO channel specification, + * -ERRNO in other failures + */ +static int msa311_get_axis(struct msa311_priv *msa311, + const struct iio_chan_spec * const chan, + __le16 *axis) +{ + struct device *dev = msa311->dev; + unsigned int axis_reg; + + if (chan->scan_index < MSA311_SI_X || chan->scan_index > MSA311_SI_Z) { + dev_err(dev, "invalid scan_index value [%d]\n", + chan->scan_index); + return -EINVAL; + } + + /* Axes data layout has 2 byte gap for each axis starting from X axis */ + axis_reg = MSA311_ACC_X_REG + (chan->scan_index << 1); + + return regmap_bulk_read(msa311->regs, axis_reg, axis, sizeof(*axis)); +} + +static int msa311_read_raw_data(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + __le16 axis; + int err; + + err = pm_runtime_resume_and_get(dev); + if (err) + return err; + + err = iio_device_claim_direct_mode(indio_dev); + if (err) + return err; + + mutex_lock(&msa311->lock); + err = msa311_get_axis(msa311, chan, &axis); + mutex_unlock(&msa311->lock); + + iio_device_release_direct_mode(indio_dev); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + if (err) { + dev_err(dev, "can't get axis %s (%pe)\n", + chan->datasheet_name, ERR_PTR(err)); + return err; + } + + /* + * Axis data format is: + * ACC_X = (ACC_X_MSB[7:0] << 4) | ACC_X_LSB[7:4] + */ + *val = sign_extend32(le16_to_cpu(axis) >> chan->scan_type.shift, + chan->scan_type.realbits - 1); + + return IIO_VAL_INT; +} + +static int msa311_read_scale(struct iio_dev *indio_dev, int *val, int *val2) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + unsigned int fs; + int err; + + mutex_lock(&msa311->lock); + err = regmap_field_read(msa311->fields[F_FS], &fs); + mutex_unlock(&msa311->lock); + if (err) { + dev_err(dev, "can't get actual scale (%pe)\n", ERR_PTR(err)); + return err; + } + + *val = msa311_fs_table[fs].integral; + *val2 = msa311_fs_table[fs].microfract; + + return IIO_VAL_INT_PLUS_MICRO; +} + +static int msa311_read_samp_freq(struct iio_dev *indio_dev, + int *val, int *val2) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + unsigned int odr; + int err; + + mutex_lock(&msa311->lock); + err = msa311_get_odr(msa311, &odr); + mutex_unlock(&msa311->lock); + if (err) { + dev_err(dev, "can't get actual frequency (%pe)\n", + ERR_PTR(err)); + return err; + } + + *val = msa311_odr_table[odr].integral; + *val2 = msa311_odr_table[odr].microfract; + + return IIO_VAL_INT_PLUS_MICRO; +} + +static int msa311_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_RAW: + return msa311_read_raw_data(indio_dev, chan, val, val2); + + case IIO_CHAN_INFO_SCALE: + return msa311_read_scale(indio_dev, val, val2); + + case IIO_CHAN_INFO_SAMP_FREQ: + return msa311_read_samp_freq(indio_dev, val, val2); + + default: + return -EINVAL; + } +} + +static int msa311_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, + int *length, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + *vals = (int *)msa311_odr_table; + *type = IIO_VAL_INT_PLUS_MICRO; + /* ODR value has 2 ints (integer and fractional parts) */ + *length = ARRAY_SIZE(msa311_odr_table) * 2; + return IIO_AVAIL_LIST; + + case IIO_CHAN_INFO_SCALE: + *vals = (int *)msa311_fs_table; + *type = IIO_VAL_INT_PLUS_MICRO; + /* FS value has 2 ints (integer and fractional parts) */ + *length = ARRAY_SIZE(msa311_fs_table) * 2; + return IIO_AVAIL_LIST; + + default: + return -EINVAL; + } +} + +static int msa311_write_scale(struct iio_dev *indio_dev, int val, int val2) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + unsigned int fs; + int err; + + /* We do not have fs >= 1, so skip such values */ + if (val) + return 0; + + err = pm_runtime_resume_and_get(dev); + if (err) + return err; + + err = -EINVAL; + for (fs = 0; fs < ARRAY_SIZE(msa311_fs_table); fs++) + /* Do not check msa311_fs_table[fs].integral, it's always 0 */ + if (val2 == msa311_fs_table[fs].microfract) { + mutex_lock(&msa311->lock); + err = regmap_field_write(msa311->fields[F_FS], fs); + mutex_unlock(&msa311->lock); + break; + } + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + if (err) + dev_err(dev, "can't update scale (%pe)\n", ERR_PTR(err)); + + return err; +} + +static int msa311_write_samp_freq(struct iio_dev *indio_dev, int val, int val2) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + unsigned int odr; + int err; + + err = pm_runtime_resume_and_get(dev); + if (err) + return err; + + /* + * Sampling frequency changing is prohibited when buffer mode is + * enabled, because sometimes MSA311 chip returns outliers during + * frequency values growing up in the read operation moment. + */ + err = iio_device_claim_direct_mode(indio_dev); + if (err) + return err; + + err = -EINVAL; + for (odr = 0; odr < ARRAY_SIZE(msa311_odr_table); odr++) + if (val == msa311_odr_table[odr].integral && + val2 == msa311_odr_table[odr].microfract) { + mutex_lock(&msa311->lock); + err = msa311_set_odr(msa311, odr); + mutex_unlock(&msa311->lock); + break; + } + + iio_device_release_direct_mode(indio_dev); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + if (err) + dev_err(dev, "can't update frequency (%pe)\n", ERR_PTR(err)); + + return err; +} + +static int msa311_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_SCALE: + return msa311_write_scale(indio_dev, val, val2); + + case IIO_CHAN_INFO_SAMP_FREQ: + return msa311_write_samp_freq(indio_dev, val, val2); + + default: + return -EINVAL; + } +} + +static int msa311_debugfs_reg_access(struct iio_dev *indio_dev, + unsigned int reg, unsigned int writeval, + unsigned int *readval) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + int err; + + if (reg > regmap_get_max_register(msa311->regs)) + return -EINVAL; + + err = pm_runtime_resume_and_get(dev); + if (err) + return err; + + mutex_lock(&msa311->lock); + + if (readval) + err = regmap_read(msa311->regs, reg, readval); + else + err = regmap_write(msa311->regs, reg, writeval); + + mutex_unlock(&msa311->lock); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + if (err) + dev_err(dev, "can't %s register %u from debugfs (%pe)\n", + str_read_write(readval), reg, ERR_PTR(err)); + + return err; +} + +static int msa311_buffer_preenable(struct iio_dev *indio_dev) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + + return pm_runtime_resume_and_get(dev); +} + +static int msa311_buffer_postdisable(struct iio_dev *indio_dev) +{ + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return 0; +} + +static int msa311_set_new_data_trig_state(struct iio_trigger *trig, bool state) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + struct msa311_priv *msa311 = iio_priv(indio_dev); + struct device *dev = msa311->dev; + int err; + + mutex_lock(&msa311->lock); + err = regmap_field_write(msa311->fields[F_NEW_DATA_INT_EN], state); + mutex_unlock(&msa311->lock); + if (err) + dev_err(dev, + "can't %s buffer due to new_data_int failure (%pe)\n", + str_enable_disable(state), ERR_PTR(err)); + + return err; +} + +static int msa311_validate_device(struct iio_trigger *trig, + struct iio_dev *indio_dev) +{ + return iio_trigger_get_drvdata(trig) == indio_dev ? 0 : -EINVAL; +} + +static irqreturn_t msa311_buffer_thread(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct msa311_priv *msa311 = iio_priv(pf->indio_dev); + struct iio_dev *indio_dev = pf->indio_dev; + const struct iio_chan_spec *chan; + struct device *dev = msa311->dev; + int bit, err, i = 0; + __le16 axis; + struct { + __le16 channels[MSA311_SI_Z + 1]; + s64 ts __aligned(8); + } buf; + + memset(&buf, 0, sizeof(buf)); + + mutex_lock(&msa311->lock); + + for_each_set_bit(bit, indio_dev->active_scan_mask, + indio_dev->masklength) { + chan = &msa311_channels[bit]; + + err = msa311_get_axis(msa311, chan, &axis); + if (err) { + mutex_unlock(&msa311->lock); + dev_err(dev, "can't get axis %s (%pe)\n", + chan->datasheet_name, ERR_PTR(err)); + goto notify_done; + } + + buf.channels[i++] = axis; + } + + mutex_unlock(&msa311->lock); + + iio_push_to_buffers_with_timestamp(indio_dev, &buf, + iio_get_time_ns(indio_dev)); + +notify_done: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static irqreturn_t msa311_irq_thread(int irq, void *p) +{ + struct msa311_priv *msa311 = iio_priv(p); + unsigned int new_data_int_enabled; + struct device *dev = msa311->dev; + int err; + + mutex_lock(&msa311->lock); + + /* + * We do not check NEW_DATA int status, because based on the + * specification it's cleared automatically after a fixed time. + * So just check that is enabled by driver logic. + */ + err = regmap_field_read(msa311->fields[F_NEW_DATA_INT_EN], + &new_data_int_enabled); + + mutex_unlock(&msa311->lock); + if (err) { + dev_err(dev, "can't read new_data interrupt state (%pe)\n", + ERR_PTR(err)); + return IRQ_NONE; + } + + if (new_data_int_enabled) + iio_trigger_poll_chained(msa311->new_data_trig); + + return IRQ_HANDLED; +} + +static const struct iio_info msa311_info = { + .read_raw = msa311_read_raw, + .read_avail = msa311_read_avail, + .write_raw = msa311_write_raw, + .debugfs_reg_access = msa311_debugfs_reg_access, +}; + +static const struct iio_buffer_setup_ops msa311_buffer_setup_ops = { + .preenable = msa311_buffer_preenable, + .postdisable = msa311_buffer_postdisable, +}; + +static const struct iio_trigger_ops msa311_new_data_trig_ops = { + .set_trigger_state = msa311_set_new_data_trig_state, + .validate_device = msa311_validate_device, +}; + +static int msa311_check_partid(struct msa311_priv *msa311) +{ + struct device *dev = msa311->dev; + unsigned int partid; + int err; + + err = regmap_read(msa311->regs, MSA311_PARTID_REG, &partid); + if (err) + return dev_err_probe(dev, err, "failed to read partid\n"); + + if (partid != MSA311_WHO_AM_I) + dev_warn(dev, "invalid partid (%#x), expected (%#x)\n", + partid, MSA311_WHO_AM_I); + + msa311->chip_name = devm_kasprintf(dev, GFP_KERNEL, + "msa311-%02x", partid); + if (!msa311->chip_name) + return dev_err_probe(dev, -ENOMEM, "can't alloc chip name\n"); + + return 0; +} + +static int msa311_soft_reset(struct msa311_priv *msa311) +{ + struct device *dev = msa311->dev; + int err; + + err = regmap_write(msa311->regs, MSA311_SOFT_RESET_REG, + MSA311_GENMASK(F_SOFT_RESET_I2C) | + MSA311_GENMASK(F_SOFT_RESET_SPI)); + if (err) + return dev_err_probe(dev, err, "can't soft reset all logic\n"); + + return 0; +} + +static int msa311_chip_init(struct msa311_priv *msa311) +{ + struct device *dev = msa311->dev; + const char zero_bulk[2] = { }; + int err; + + err = regmap_write(msa311->regs, MSA311_RANGE_REG, MSA311_FS_16G); + if (err) + return dev_err_probe(dev, err, "failed to setup accel range\n"); + + /* Disable all interrupts by default */ + err = regmap_bulk_write(msa311->regs, MSA311_INT_SET_0_REG, + zero_bulk, sizeof(zero_bulk)); + if (err) + return dev_err_probe(dev, err, + "can't disable set0/set1 interrupts\n"); + + /* Unmap all INT1 interrupts by default */ + err = regmap_bulk_write(msa311->regs, MSA311_INT_MAP_0_REG, + zero_bulk, sizeof(zero_bulk)); + if (err) + return dev_err_probe(dev, err, + "failed to unmap map0/map1 interrupts\n"); + + /* Disable all axes by default */ + err = regmap_update_bits(msa311->regs, MSA311_ODR_REG, + MSA311_GENMASK(F_X_AXIS_DIS) | + MSA311_GENMASK(F_Y_AXIS_DIS) | + MSA311_GENMASK(F_Z_AXIS_DIS), 0); + if (err) + return dev_err_probe(dev, err, "can't enable all axes\n"); + + err = msa311_set_odr(msa311, MSA311_ODR_125_HZ); + if (err) + return dev_err_probe(dev, err, + "failed to set accel frequency\n"); + + return 0; +} + +static int msa311_setup_interrupts(struct msa311_priv *msa311) +{ + struct device *dev = msa311->dev; + struct i2c_client *i2c = to_i2c_client(dev); + struct iio_dev *indio_dev = i2c_get_clientdata(i2c); + struct iio_trigger *trig; + int err; + + /* Keep going without interrupts if no initialized I2C IRQ */ + if (i2c->irq <= 0) + return 0; + + err = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL, + msa311_irq_thread, IRQF_ONESHOT, + msa311->chip_name, indio_dev); + if (err) + return dev_err_probe(dev, err, "failed to request IRQ\n"); + + trig = devm_iio_trigger_alloc(dev, "%s-new-data", msa311->chip_name); + if (!trig) + return dev_err_probe(dev, -ENOMEM, + "can't allocate newdata trigger\n"); + + msa311->new_data_trig = trig; + msa311->new_data_trig->ops = &msa311_new_data_trig_ops; + iio_trigger_set_drvdata(msa311->new_data_trig, indio_dev); + + err = devm_iio_trigger_register(dev, msa311->new_data_trig); + if (err) + return dev_err_probe(dev, err, + "can't register newdata trigger\n"); + + err = regmap_field_write(msa311->fields[F_INT1_OD], + MSA311_INT1_OD_PUSH_PULL); + if (err) + return dev_err_probe(dev, err, + "can't enable push-pull interrupt\n"); + + err = regmap_field_write(msa311->fields[F_INT1_LVL], + MSA311_INT1_LVL_HIGH); + if (err) + return dev_err_probe(dev, err, + "can't set active interrupt level\n"); + + err = regmap_field_write(msa311->fields[F_LATCH_INT], + MSA311_LATCH_INT_LATCHED); + if (err) + return dev_err_probe(dev, err, + "can't latch interrupt\n"); + + err = regmap_field_write(msa311->fields[F_RESET_INT], 1); + if (err) + return dev_err_probe(dev, err, + "can't reset interrupt\n"); + + err = regmap_field_write(msa311->fields[F_INT1_NEW_DATA], 1); + if (err) + return dev_err_probe(dev, err, + "can't map new data interrupt\n"); + + return 0; +} + +static int msa311_regmap_init(struct msa311_priv *msa311) +{ + struct regmap_field **fields = msa311->fields; + struct device *dev = msa311->dev; + struct i2c_client *i2c = to_i2c_client(dev); + struct regmap *regmap; + int i; + + regmap = devm_regmap_init_i2c(i2c, &msa311_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), + "failed to register i2c regmap\n"); + + msa311->regs = regmap; + + for (i = 0; i < F_MAX_FIELDS; i++) { + fields[i] = devm_regmap_field_alloc(dev, + msa311->regs, + msa311_reg_fields[i]); + if (IS_ERR(msa311->fields[i])) + return dev_err_probe(dev, PTR_ERR(msa311->fields[i]), + "can't alloc field[%d]\n", i); + } + + return 0; +} + +static void msa311_powerdown(void *msa311) +{ + msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_SUSPEND); +} + +static void msa311_vdd_disable(void *vdd) +{ + regulator_disable(vdd); +} + +static int msa311_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct msa311_priv *msa311; + struct iio_dev *indio_dev; + int err; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*msa311)); + if (!indio_dev) + return dev_err_probe(dev, -ENOMEM, + "IIO device allocation failed\n"); + + msa311 = iio_priv(indio_dev); + msa311->dev = dev; + i2c_set_clientdata(i2c, indio_dev); + + err = msa311_regmap_init(msa311); + if (err) + return err; + + mutex_init(&msa311->lock); + + msa311->vdd = devm_regulator_get(dev, "vdd"); + if (IS_ERR(msa311->vdd)) + return dev_err_probe(dev, PTR_ERR(msa311->vdd), + "can't get vdd supply\n"); + + err = regulator_enable(msa311->vdd); + if (err) + return dev_err_probe(dev, err, "can't enable vdd supply\n"); + + err = devm_add_action_or_reset(dev, msa311_vdd_disable, msa311->vdd); + if (err) + return dev_err_probe(dev, err, + "can't add vdd disable action\n"); + + err = msa311_check_partid(msa311); + if (err) + return err; + + err = msa311_soft_reset(msa311); + if (err) + return err; + + err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_NORMAL); + if (err) + return dev_err_probe(dev, err, "failed to power on device\n"); + + /* + * Register powerdown deferred callback which suspends the chip + * after module unloaded. + * + * MSA311 should be in SUSPEND mode in the two cases: + * 1) When driver is loaded, but we do not have any data or + * configuration requests to it (we are solving it using + * autosuspend feature). + * 2) When driver is unloaded and device is not used (devm action is + * used in this case). + */ + err = devm_add_action_or_reset(dev, msa311_powerdown, msa311); + if (err) + return dev_err_probe(dev, err, "can't add powerdown action\n"); + + err = pm_runtime_set_active(dev); + if (err) + return err; + + err = devm_pm_runtime_enable(dev); + if (err) + return err; + + pm_runtime_get_noresume(dev); + pm_runtime_set_autosuspend_delay(dev, MSA311_PWR_SLEEP_DELAY_MS); + pm_runtime_use_autosuspend(dev); + + err = msa311_chip_init(msa311); + if (err) + return err; + + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = msa311_channels; + indio_dev->num_channels = ARRAY_SIZE(msa311_channels); + indio_dev->name = msa311->chip_name; + indio_dev->info = &msa311_info; + + err = devm_iio_triggered_buffer_setup(dev, indio_dev, + iio_pollfunc_store_time, + msa311_buffer_thread, + &msa311_buffer_setup_ops); + if (err) + return dev_err_probe(dev, err, + "can't setup IIO trigger buffer\n"); + + err = msa311_setup_interrupts(msa311); + if (err) + return err; + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + err = devm_iio_device_register(dev, indio_dev); + if (err) + return dev_err_probe(dev, err, "IIO device register failed\n"); + + return 0; +} + +static int msa311_runtime_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct msa311_priv *msa311 = iio_priv(indio_dev); + int err; + + mutex_lock(&msa311->lock); + err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_SUSPEND); + mutex_unlock(&msa311->lock); + if (err) + dev_err(dev, "failed to power off device (%pe)\n", + ERR_PTR(err)); + + return err; +} + +static int msa311_runtime_resume(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct msa311_priv *msa311 = iio_priv(indio_dev); + int err; + + mutex_lock(&msa311->lock); + err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_NORMAL); + mutex_unlock(&msa311->lock); + if (err) + dev_err(dev, "failed to power on device (%pe)\n", + ERR_PTR(err)); + + return err; +} + +static DEFINE_RUNTIME_DEV_PM_OPS(msa311_pm_ops, msa311_runtime_suspend, + msa311_runtime_resume, NULL); + +static const struct i2c_device_id msa311_i2c_id[] = { + { .name = "msa311" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, msa311_i2c_id); + +static const struct of_device_id msa311_of_match[] = { + { .compatible = "memsensing,msa311" }, + { } +}; +MODULE_DEVICE_TABLE(of, msa311_of_match); + +static struct i2c_driver msa311_driver = { + .driver = { + .name = "msa311", + .of_match_table = msa311_of_match, + .pm = pm_ptr(&msa311_pm_ops), + }, + .probe_new = msa311_probe, + .id_table = msa311_i2c_id, +}; +module_i2c_driver(msa311_driver); + +MODULE_AUTHOR("Dmitry Rokosov "); +MODULE_DESCRIPTION("MEMSensing MSA311 3-axis accelerometer driver"); +MODULE_LICENSE("GPL"); From 4eba8239c8ce419e53813d02251a46c27597fe73 Mon Sep 17 00:00:00 2001 From: Dmitry Rokosov Date: Mon, 22 Aug 2022 17:49:26 +0000 Subject: [PATCH 125/142] dt-bindings: iio: accel: add dt-binding schema for msa311 accel driver Introduce devicetree binding json-schema for MSA311 tri-axial, low-g accelerometer driver. Signed-off-by: Dmitry Rokosov Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220822175011.2886-5-ddrokosov@sberdevices.ru Signed-off-by: Jonathan Cameron --- .../bindings/iio/accel/memsensing,msa311.yaml | 53 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml diff --git a/Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml b/Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml new file mode 100644 index 000000000000..23528dcaa073 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause + +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/iio/accel/memsensing,msa311.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: MEMSensing digital 3-Axis accelerometer + +maintainers: + - Dmitry Rokosov + +description: | + MSA311 is a tri-axial, low-g accelerometer with I2C digital output for + sensitivity consumer applications. It has dynamical user selectable full + scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements + with output data rates from 1Hz to 1000Hz. + Datasheet can be found at following URL + https://cdn-shop.adafruit.com/product-files/5309/MSA311-V1.1-ENG.pdf + +properties: + compatible: + const: memsensing,msa311 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + accelerometer@62 { + compatible = "memsensing,msa311"; + reg = <0x62>; + interrupt-parent = <&gpio_intc>; + interrupts = <29 IRQ_TYPE_EDGE_RISING>; + vdd-supply = <&vcc_5v>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index b8a621941db9..00cf4a00bb6d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13180,6 +13180,7 @@ MEMSENSING MICROSYSTEMS MSA311 DRIVER M: Dmitry Rokosov L: linux-iio@vger.kernel.org S: Maintained +F: Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml F: drivers/iio/accel/msa311.c MEN A21 WATCHDOG DRIVER From 1cf507cfddd38724abeed2298c994c606aff89a9 Mon Sep 17 00:00:00 2001 From: wangjianli Date: Tue, 23 Aug 2022 22:00:23 +0800 Subject: [PATCH 126/142] iio/accel: fix repeated words in comments Delete the redundant word 'in'. Signed-off-by: wangjianli Link: https://lore.kernel.org/r/20220823140023.2567-1-wangjianli@cdjrlc.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/kxcjk-1013.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c index 748b35c2f0c3..b073ab12e6a4 100644 --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -1064,7 +1064,7 @@ static int kxcjk1013_write_event_config(struct iio_dev *indio_dev, /* * We will expect the enable and disable to do operation in - * in reverse order. This will happen here anyway as our + * reverse order. This will happen here anyway as our * resume operation uses sync mode runtime pm calls, the * suspend operation will be delayed by autosuspend delay * So the disable operation will still happen in reverse of From 1b55d33e027478f2234ef5c4f6d07be990539928 Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Wed, 24 Aug 2022 20:09:13 +0300 Subject: [PATCH 127/142] MAINTAINERS: fix Analog Devices forum links Fix the links to redirect to the correct forum subsection for the latest Analog Devices drivers added. Signed-off-by: Antoniu Miclaus Link: https://lore.kernel.org/r/20220824170913.13411-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 00cf4a00bb6d..d9c8596ee28b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -620,7 +620,7 @@ ADXL367 THREE-AXIS DIGITAL ACCELEROMETER DRIVER M: Cosmin Tanislav L: linux-iio@vger.kernel.org S: Supported -W: http://ez.analog.com/community/linux-device-drivers +W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml F: drivers/iio/accel/adxl367* @@ -1144,7 +1144,7 @@ ANALOG DEVICES INC AD74413R DRIVER M: Cosmin Tanislav L: linux-iio@vger.kernel.org S: Supported -W: http://ez.analog.com/community/linux-device-drivers +W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml F: drivers/iio/addac/ad74413r.c F: include/dt-bindings/iio/addac/adi,ad74413r.h @@ -11915,7 +11915,7 @@ LTC2688 IIO DAC DRIVER M: Nuno Sá L: linux-iio@vger.kernel.org S: Supported -W: http://ez.analog.com/community/linux-device-drivers +W: https://ez.analog.com/linux-software-drivers F: Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688 F: Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml F: drivers/iio/dac/ltc2688.c From c682c96334cb790930c814e58e33d5e0df600a63 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Tue, 23 Aug 2022 09:56:33 -0500 Subject: [PATCH 128/142] dt-bindings: iio: Add missing (unevaluated|additional)Properties on child nodes In order to ensure only documented properties are present, node schemas must have unevaluatedProperties or additionalProperties set to false (typically). Signed-off-by: Rob Herring Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220823145649.3118479-2-robh@kernel.org Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.yaml | 1 + .../devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml | 2 ++ Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml | 1 + .../devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml | 1 + Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml | 1 + Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml | 1 + Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml | 4 ++++ Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml | 1 + 8 files changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.yaml b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.yaml index 74a4a9d95798..8bac0c4120dd 100644 --- a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.yaml @@ -58,6 +58,7 @@ required: patternProperties: "^.*@[0-9a-f]+$": type: object + additionalProperties: false description: | Represents the external channels which are connected to the ADC. For compatible property "qcom,spmi-vadc" following channels, also known as diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml index 92f9472a77ae..1970503389aa 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml @@ -72,6 +72,7 @@ additionalProperties: false patternProperties: "^filter@[0-9]+$": type: object + unevaluatedProperties: false description: child node properties: @@ -225,6 +226,7 @@ patternProperties: patternProperties: "^dfsdm-dai+$": type: object + additionalProperties: false description: child node properties: diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml index a3b79438a13a..2c3c2cf2145c 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml @@ -43,6 +43,7 @@ additionalProperties: false patternProperties: "^channel@[0-7]+$": type: object + additionalProperties: false description: Child nodes needed for each channel that the platform uses. diff --git a/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml b/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml index 3698b4b0900f..be93c109d6ac 100644 --- a/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml +++ b/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml @@ -134,6 +134,7 @@ properties: ams-pl@400: type: object + additionalProperties: false description: PL-SYSMON is capable of monitoring off chip voltage and temperature. PL-SYSMON block has DRP, JTAG and I2C interface to enable monitoring diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml index baa65a521bad..03bb90a7f4f8 100644 --- a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml +++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml @@ -63,6 +63,7 @@ additionalProperties: false patternProperties: "^channel@[0-3]$": type: object + additionalProperties: false description: Represents the external channels which are connected to the device. properties: diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml index 9c48c76993fe..fee0f023a8c8 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml @@ -78,6 +78,7 @@ patternProperties: custom-output-range-config: type: object + additionalProperties: false description: Configuration of custom range when adi,output-range-microvolt is not present. The formulas for calculation the output voltages are diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml index ca5432ffdedb..8e7da0de918f 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml @@ -60,6 +60,7 @@ properties: connected to the DAC. Channel 0 can act both as a current source and sink. type: object + additionalProperties: false properties: reg: @@ -83,6 +84,7 @@ properties: description: Represents an external channel which are connected to the DAC. type: object + additionalProperties: false properties: reg: @@ -99,6 +101,7 @@ properties: description: Represents an external channel which are connected to the DAC. type: object + additionalProperties: false properties: reg: @@ -114,6 +117,7 @@ properties: patternProperties: "^channel@([3-5])$": type: object + additionalProperties: false description: Represents the external channels which are connected to the DAC. properties: reg: diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml index 48f9e7d29423..15cc6bf59b13 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml @@ -48,6 +48,7 @@ properties: patternProperties: "^channel@([0-9]|1[0-5])$": type: object + additionalProperties: false properties: reg: From f5ffeca5086fef68765f3c1dbc9a12183833adf0 Mon Sep 17 00:00:00 2001 From: Shreeya Patel Date: Fri, 12 Aug 2022 15:34:24 +0530 Subject: [PATCH 129/142] iio: light: ltrf216a: Add raw attribute Add IIO_CHAN_INFO_RAW to the mask to be able to read raw values from the light sensor. The userspace code for brightness control in steam deck uses the in_illuminance_input value through sysfs and multiplies it with a constant stored in BIOS at factory calibration time. The downstream driver for LTRF216A that we have been using has incorrect formula for LUX calculation which we corrected in the upstreamed driver. Now to be able to use the upstreamed driver, we need to add some magic in userspace so that the brightness control works like before even with the updated LUX formula. Hence, we need the raw data to calculate a constant that can be added in userspace code. Downstream driver LUX formula :- (greendata*8*LTRF216A_WIN_FAC) / (data->als_gain_fac*data->int_time_fac*10) Upstreamed driver LUX formula :- (greendata*45*LTRF216A_WIN_FAC) / (data->als_gain_fac*data->int_time_fac) greendata is the ALS_DATA which we would like to get through sysfs using the raw attribute. Signed-off-by: Shreeya Patel Link: https://lore.kernel.org/r/20220812100424.529425-1-shreeya.patel@collabora.com Signed-off-by: Jonathan Cameron --- drivers/iio/light/ltrf216a.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c index e6e24e70d2b9..4b8ef36b6912 100644 --- a/drivers/iio/light/ltrf216a.c +++ b/drivers/iio/light/ltrf216a.c @@ -93,6 +93,7 @@ static const struct iio_chan_spec ltrf216a_channels[] = { { .type = IIO_LIGHT, .info_mask_separate = + BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_PROCESSED) | BIT(IIO_CHAN_INFO_INT_TIME), .info_mask_separate_available = @@ -259,6 +260,18 @@ static int ltrf216a_read_raw(struct iio_dev *indio_dev, int ret; switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = ltrf216a_set_power_state(data, true); + if (ret) + return ret; + mutex_lock(&data->lock); + ret = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0); + mutex_unlock(&data->lock); + ltrf216a_set_power_state(data, false); + if (ret < 0) + return ret; + *val = ret; + return IIO_VAL_INT; case IIO_CHAN_INFO_PROCESSED: mutex_lock(&data->lock); ret = ltrf216a_get_lux(data); From 6cda6aa83c0b548471bc30cc2083fe5fd255591b Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Sun, 4 Sep 2022 12:02:01 +0200 Subject: [PATCH 130/142] dt-bindings: iio: adc: ti,tsc2046: add vref-supply property Add property for the voltage reference supply. Signed-off-by: Oleksij Rempel Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220904100203.3614502-1-o.rempel@pengutronix.de Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml b/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml index 0b48814c0dc2..bdf3bba2d750 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml +++ b/Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml @@ -23,6 +23,9 @@ properties: interrupts: maxItems: 1 + vref-supply: + description: Optional supply of the reference voltage + "#io-channel-cells": const: 1 From a616a6a1ff164d1502b28c1b1f5d481bfb26d879 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Sun, 4 Sep 2022 12:02:02 +0200 Subject: [PATCH 131/142] iio: adc: tsc2046: add vref support If VREF pin is attached, we should use external VREF source instead of the internal. Otherwise we will get wrong measurements on some of the channel types. Signed-off-by: Oleksij Rempel Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220904100203.3614502-2-o.rempel@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-tsc2046.c | 57 ++++++++++++++++++++++++++++++++++-- 1 file changed, 55 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c index 0d9436a69cbf..8d6559303172 100644 --- a/drivers/iio/adc/ti-tsc2046.c +++ b/drivers/iio/adc/ti-tsc2046.c @@ -8,7 +8,9 @@ #include #include #include +#include #include +#include #include @@ -139,6 +141,7 @@ enum tsc2046_state { struct tsc2046_adc_priv { struct spi_device *spi; const struct tsc2046_adc_dcfg *dcfg; + struct regulator *vref_reg; struct iio_trigger *trig; struct hrtimer trig_timer; @@ -173,6 +176,7 @@ struct tsc2046_adc_priv { u32 scan_interval_us; u32 time_per_scan_us; u32 time_per_bit_ns; + unsigned int vref_mv; struct tsc2046_adc_ch_cfg ch_cfg[TI_TSC2046_MAX_CHAN]; }; @@ -252,7 +256,9 @@ static u8 tsc2046_adc_get_cmd(struct tsc2046_adc_priv *priv, int ch_idx, case TI_TSC2046_ADDR_AUX: case TI_TSC2046_ADDR_VBAT: case TI_TSC2046_ADDR_TEMP0: - pd |= TI_TSC2046_SER | TI_TSC2046_PD1_VREF_ON; + pd |= TI_TSC2046_SER; + if (!priv->vref_reg) + pd |= TI_TSC2046_PD1_VREF_ON; } return TI_TSC2046_START | FIELD_PREP(TI_TSC2046_ADDR, ch_idx) | pd; @@ -468,7 +474,7 @@ static int tsc2046_adc_read_raw(struct iio_dev *indio_dev, * So, it is better to use external voltage-divider driver * instead, which is calculating complete chain. */ - *val = TI_TSC2046_INT_VREF; + *val = priv->vref_mv; *val2 = chan->scan_type.realbits; return IIO_VAL_FRACTIONAL_LOG2; } @@ -740,6 +746,49 @@ static void tsc2046_adc_parse_fwnode(struct tsc2046_adc_priv *priv) } } +static void tsc2046_adc_regulator_disable(void *data) +{ + struct tsc2046_adc_priv *priv = data; + + regulator_disable(priv->vref_reg); +} + +static int tsc2046_adc_configure_regulator(struct tsc2046_adc_priv *priv) +{ + struct device *dev = &priv->spi->dev; + int ret; + + priv->vref_reg = devm_regulator_get_optional(dev, "vref"); + if (IS_ERR(priv->vref_reg)) { + /* If regulator exists but can't be get, return an error */ + if (PTR_ERR(priv->vref_reg) != -ENODEV) + return PTR_ERR(priv->vref_reg); + priv->vref_reg = NULL; + } + if (!priv->vref_reg) { + /* Use internal reference */ + priv->vref_mv = TI_TSC2046_INT_VREF; + return 0; + } + + ret = regulator_enable(priv->vref_reg); + if (ret) + return ret; + + ret = devm_add_action_or_reset(dev, tsc2046_adc_regulator_disable, + priv); + if (ret) + return ret; + + ret = regulator_get_voltage(priv->vref_reg); + if (ret < 0) + return ret; + + priv->vref_mv = ret / MILLI; + + return 0; +} + static int tsc2046_adc_probe(struct spi_device *spi) { const struct tsc2046_adc_dcfg *dcfg; @@ -781,6 +830,10 @@ static int tsc2046_adc_probe(struct spi_device *spi) indio_dev->num_channels = dcfg->num_channels; indio_dev->info = &tsc2046_adc_info; + ret = tsc2046_adc_configure_regulator(priv); + if (ret) + return ret; + tsc2046_adc_parse_fwnode(priv); ret = tsc2046_adc_setup_spi_msg(priv); From 3f8dd0a7dc16514d365253568bd32b8fe86c2e94 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Sun, 4 Sep 2022 12:02:03 +0200 Subject: [PATCH 132/142] iio: adc: tsc2046: silent spi_device_id warning Add spi_device_id to silent following kernel runtime warning: "SPI driver tsc2046 has no spi_device_id for ti,tsc2046e-adc". Signed-off-by: Oleksij Rempel Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220904100203.3614502-3-o.rempel@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-tsc2046.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c index 8d6559303172..1bbb51a6683c 100644 --- a/drivers/iio/adc/ti-tsc2046.c +++ b/drivers/iio/adc/ti-tsc2046.c @@ -805,6 +805,11 @@ static int tsc2046_adc_probe(struct spi_device *spi) } dcfg = device_get_match_data(dev); + if (!dcfg) { + const struct spi_device_id *id = spi_get_device_id(spi); + + dcfg = (const struct tsc2046_adc_dcfg *)id->driver_data; + } if (!dcfg) return -EINVAL; @@ -886,11 +891,18 @@ static const struct of_device_id ads7950_of_table[] = { }; MODULE_DEVICE_TABLE(of, ads7950_of_table); +static const struct spi_device_id tsc2046_adc_spi_ids[] = { + { "tsc2046e-adc", (unsigned long)&tsc2046_adc_dcfg_tsc2046e }, + { } +}; +MODULE_DEVICE_TABLE(spi, tsc2046_adc_spi_ids); + static struct spi_driver tsc2046_adc_driver = { .driver = { .name = "tsc2046", .of_match_table = ads7950_of_table, }, + .id_table = tsc2046_adc_spi_ids, .probe = tsc2046_adc_probe, }; module_spi_driver(tsc2046_adc_driver); From 741d1e3783d9486d76534f2f08442e1f0eb108a1 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 31 Aug 2022 17:15:28 +0300 Subject: [PATCH 133/142] iio: magnetometer: yamaha-yas530: Use pointers as driver data Unify ID tables to use pointers for driver data. It will allow to simplify the driver later on. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220831141530.80572-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 65bb34c24810..533fd8c73024 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -1437,8 +1438,10 @@ static int yas5xx_probe(struct i2c_client *i2c, goto assert_reset; } - yas5xx->chip_info = &yas5xx_chip_info_tbl[id->driver_data]; - ci = yas5xx->chip_info; + ci = device_get_match_data(dev); + if (!ci) + ci = (const struct yas5xx_chip_info *)id->driver_data; + yas5xx->chip_info = ci; ret = regmap_read(yas5xx->map, YAS5XX_DEVICE_ID, &id_check); if (ret) @@ -1585,19 +1588,19 @@ static DEFINE_RUNTIME_DEV_PM_OPS(yas5xx_dev_pm_ops, yas5xx_runtime_suspend, yas5xx_runtime_resume, NULL); static const struct i2c_device_id yas5xx_id[] = { - {"yas530", yas530 }, - {"yas532", yas532 }, - {"yas533", yas533 }, - {"yas537", yas537 }, + {"yas530", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas530] }, + {"yas532", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas532] }, + {"yas533", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas533] }, + {"yas537", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas537] }, {} }; MODULE_DEVICE_TABLE(i2c, yas5xx_id); static const struct of_device_id yas5xx_of_match[] = { - { .compatible = "yamaha,yas530", }, - { .compatible = "yamaha,yas532", }, - { .compatible = "yamaha,yas533", }, - { .compatible = "yamaha,yas537", }, + { .compatible = "yamaha,yas530", &yas5xx_chip_info_tbl[yas530] }, + { .compatible = "yamaha,yas532", &yas5xx_chip_info_tbl[yas532] }, + { .compatible = "yamaha,yas533", &yas5xx_chip_info_tbl[yas533] }, + { .compatible = "yamaha,yas537", &yas5xx_chip_info_tbl[yas537] }, {} }; MODULE_DEVICE_TABLE(of, yas5xx_of_match); From ff1c17e9a7623f73aa44c605a5e6a4396df46a5e Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 31 Aug 2022 17:15:29 +0300 Subject: [PATCH 134/142] iio: magnetometer: yamaha-yas530: Make strings const in chip info For better compiler coverage mark strings consts in the chip info. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220831141530.80572-2-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 533fd8c73024..c56c7c9efeb8 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -189,8 +189,8 @@ struct yas5xx; */ struct yas5xx_chip_info { unsigned int devid; - char *product_name; - char *version_names[2]; + const char *product_name; + const char *version_names[2]; const int *volatile_reg; int volatile_reg_qty; u32 scaling_val2; From d05d73779145f6d1addc10b516f589f803fcdb56 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 31 Aug 2022 17:15:30 +0300 Subject: [PATCH 135/142] iio: magnetometer: yamaha-yas530: Use dev_err_probe() Unify error message format by using dev_err_probe(). Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220831141530.80572-3-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/yamaha-yas530.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index c56c7c9efeb8..fdb92a6420e1 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -1415,10 +1415,8 @@ static int yas5xx_probe(struct i2c_client *i2c, return dev_err_probe(dev, ret, "cannot get regulators\n"); ret = regulator_bulk_enable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs); - if (ret) { - dev_err(dev, "cannot enable regulators\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "cannot enable regulators\n"); /* See comment in runtime resume callback */ usleep_range(31000, 40000); @@ -1426,15 +1424,13 @@ static int yas5xx_probe(struct i2c_client *i2c, /* This will take the device out of reset if need be */ yas5xx->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(yas5xx->reset)) { - ret = dev_err_probe(dev, PTR_ERR(yas5xx->reset), - "failed to get reset line\n"); + ret = dev_err_probe(dev, PTR_ERR(yas5xx->reset), "failed to get reset line\n"); goto reg_off; } yas5xx->map = devm_regmap_init_i2c(i2c, &yas5xx_regmap_config); if (IS_ERR(yas5xx->map)) { - dev_err(dev, "failed to allocate register map\n"); - ret = PTR_ERR(yas5xx->map); + ret = dev_err_probe(dev, PTR_ERR(yas5xx->map), "failed to allocate register map\n"); goto assert_reset; } @@ -1484,13 +1480,13 @@ static int yas5xx_probe(struct i2c_client *i2c, yas5xx_handle_trigger, NULL); if (ret) { - dev_err(dev, "triggered buffer setup failed\n"); + dev_err_probe(dev, ret, "triggered buffer setup failed\n"); goto assert_reset; } ret = iio_device_register(indio_dev); if (ret) { - dev_err(dev, "device register failed\n"); + dev_err_probe(dev, ret, "device register failed\n"); goto cleanup_buffer; } From 5a80c2572f5e40fc106fe9f372964935798dc637 Mon Sep 17 00:00:00 2001 From: Ramona Bolboaca Date: Wed, 31 Aug 2022 16:30:20 +0300 Subject: [PATCH 136/142] dt-bindings: iio: adc: Add max11205 documentation file Add bindings documentation file and MAINTAINERS entry for MAX11205. Signed-off-by: Ramona Bolboaca Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220831133021.215625-1-ramona.bolboaca@analog.com Signed-off-by: Jonathan Cameron --- .../bindings/iio/adc/maxim,max11205.yaml | 69 +++++++++++++++++++ MAINTAINERS | 8 +++ 2 files changed, 77 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml new file mode 100644 index 000000000000..5f9e043cf5cd --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/maxim,max11205.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim MAX11205 ADC + +maintainers: + - Ramona Bolboaca + +description: | + The MAX11205 is an ultra-low-power (< 300FA max active current), + high-resolution, serial-output ADC. + + https://datasheets.maximintegrated.com/en/ds/MAX11205.pdf + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + enum: + - maxim,max11205a + - maxim,max11205b + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + spi-max-frequency: + maximum: 5000000 + + spi-cpha: true + + vref-supply: + description: + The regulator supply for the ADC reference voltage. This is a differential + reference. It is equal to the V_REFP - V_REFN. The maximum value is 3.6V. + +required: + - compatible + - reg + - interrupts + - spi-max-frequency + - spi-cpha + - vref-supply + +unevaluatedProperties: false + +examples: + - | + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + adc@0 { + compatible = "maxim,max11205a"; + reg = <0>; + spi-max-frequency = <5000000>; + spi-cpha; + interrupt-parent = <&gpio>; + interrupts = <19 IRQ_TYPE_EDGE_FALLING>; + vref-supply = <&max11205_vref>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index d9c8596ee28b..17bdf4398391 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12332,6 +12332,14 @@ S: Maintained F: Documentation/devicetree/bindings/iio/proximity/maxbotix,mb1232.yaml F: drivers/iio/proximity/mb1232.c +MAXIM MAX11205 DRIVER +M: Ramona Bolboaca +L: linux-iio@vger.kernel.org +S: Supported +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml +F: drivers/iio/adc/max11205.c + MAXIM MAX17040 FAMILY FUEL GAUGE DRIVERS R: Iskren Chernev R: Krzysztof Kozlowski From 0fea1007f0e68764aa18822bb6fa83d3809739e8 Mon Sep 17 00:00:00 2001 From: Ramona Bolboaca Date: Wed, 31 Aug 2022 16:30:21 +0300 Subject: [PATCH 137/142] iio: adc: add max11205 adc driver Adding support for max11205 16-bit single-channel ultra-low power delta-sigma adc. The MAX11205 is compatible with the 2-wire interface and uses SCLK and RDY/DOUT for serial communications. In this mode, all controls are implemented by timing the high or low phase of the SCLK. The 2-wire serial interface only allows for data to be read out through the RDY/DOUT output. Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX11205.pdf Signed-off-by: Ramona Bolboaca Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220831133021.215625-2-ramona.bolboaca@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 14 +++ drivers/iio/adc/Makefile | 1 + drivers/iio/adc/max11205.c | 183 +++++++++++++++++++++++++++++++++++++ 3 files changed, 198 insertions(+) create mode 100644 drivers/iio/adc/max11205.c diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index e3c2881ed23a..56e3ca3b4a5d 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -653,6 +653,20 @@ config MAX1118 To compile this driver as a module, choose M here: the module will be called max1118. +config MAX11205 + tristate "Maxim max11205 ADC driver" + depends on SPI + select AD_SIGMA_DELTA + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + + help + Say yes here to build support for Maxim max11205 16-bit, single-channel + ultra-low power delta-sigma ADC. + + To compile this driver as a module, choose M here: the module will be + called max11205. + config MAX1241 tristate "Maxim max1241 ADC driver" depends on SPI_MASTER diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index ab084094263b..46caba7a010c 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_LTC2497) += ltc2497.o ltc2497-core.o obj-$(CONFIG_MAX1027) += max1027.o obj-$(CONFIG_MAX11100) += max11100.o obj-$(CONFIG_MAX1118) += max1118.o +obj-$(CONFIG_MAX11205) += max11205.o obj-$(CONFIG_MAX1241) += max1241.o obj-$(CONFIG_MAX1363) += max1363.o obj-$(CONFIG_MAX9611) += max9611.o diff --git a/drivers/iio/adc/max11205.c b/drivers/iio/adc/max11205.c new file mode 100644 index 000000000000..65fc32971ba5 --- /dev/null +++ b/drivers/iio/adc/max11205.c @@ -0,0 +1,183 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Maxim MAX11205 16-Bit Delta-Sigma ADC + * + * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1240-max11205.pdf + * Copyright (C) 2022 Analog Devices, Inc. + * Author: Ramona Bolboaca + */ + +#include +#include +#include +#include + +#include +#include + +#define MAX11205_BIT_SCALE 15 +#define MAX11205A_OUT_DATA_RATE 116 +#define MAX11205B_OUT_DATA_RATE 13 + +enum max11205_chip_type { + TYPE_MAX11205A, + TYPE_MAX11205B, +}; + +struct max11205_chip_info { + unsigned int out_data_rate; + const char *name; +}; + +struct max11205_state { + const struct max11205_chip_info *chip_info; + struct regulator *vref; + struct ad_sigma_delta sd; +}; + +static const struct ad_sigma_delta_info max11205_sigma_delta_info = { + .has_registers = false, +}; + +static int max11205_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct max11205_state *st = iio_priv(indio_dev); + int reg_mv; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + return ad_sigma_delta_single_conversion(indio_dev, chan, val); + case IIO_CHAN_INFO_SCALE: + reg_mv = regulator_get_voltage(st->vref); + if (reg_mv < 0) + return reg_mv; + reg_mv /= 1000; + *val = reg_mv; + *val2 = MAX11205_BIT_SCALE; + return IIO_VAL_FRACTIONAL_LOG2; + case IIO_CHAN_INFO_SAMP_FREQ: + *val = st->chip_info->out_data_rate; + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static const struct iio_info max11205_iio_info = { + .read_raw = max11205_read_raw, + .validate_trigger = ad_sd_validate_trigger, +}; + +static const struct iio_chan_spec max11205_channels[] = { + { + .type = IIO_VOLTAGE, + .indexed = 1, + .scan_type = { + .sign = 's', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_BE, + }, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SAMP_FREQ) | + BIT(IIO_CHAN_INFO_SCALE), + }, +}; + +static const struct max11205_chip_info max11205_chip_info[] = { + [TYPE_MAX11205A] = { + .out_data_rate = MAX11205A_OUT_DATA_RATE, + .name = "max11205a", + }, + [TYPE_MAX11205B] = { + .out_data_rate = MAX11205B_OUT_DATA_RATE, + .name = "max11205b", + }, +}; + +static void max11205_reg_disable(void *reg) +{ + regulator_disable(reg); +} + +static int max11205_probe(struct spi_device *spi) +{ + struct max11205_state *st; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); + if (!indio_dev) + return -ENOMEM; + + st = iio_priv(indio_dev); + + ad_sd_init(&st->sd, indio_dev, spi, &max11205_sigma_delta_info); + + st->chip_info = device_get_match_data(&spi->dev); + if (!st->chip_info) + st->chip_info = + (const struct max11205_chip_info *)spi_get_device_id(spi)->driver_data; + + indio_dev->name = st->chip_info->name; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = max11205_channels; + indio_dev->num_channels = 1; + indio_dev->info = &max11205_iio_info; + + st->vref = devm_regulator_get(&spi->dev, "vref"); + if (IS_ERR(st->vref)) + return dev_err_probe(&spi->dev, PTR_ERR(st->vref), + "Failed to get vref regulator\n"); + + ret = regulator_enable(st->vref); + if (ret) + return ret; + + ret = devm_add_action_or_reset(&spi->dev, max11205_reg_disable, st->vref); + if (ret) + return ret; + + ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev); + if (ret) + return ret; + + return devm_iio_device_register(&spi->dev, indio_dev); +} + +static const struct spi_device_id max11205_spi_ids[] = { + { "max11205a", (kernel_ulong_t)&max11205_chip_info[TYPE_MAX11205A] }, + { "max11205b", (kernel_ulong_t)&max11205_chip_info[TYPE_MAX11205B] }, + { } +}; +MODULE_DEVICE_TABLE(spi, max11205_spi_ids); + +static const struct of_device_id max11205_dt_ids[] = { + { + .compatible = "maxim,max11205a", + .data = &max11205_chip_info[TYPE_MAX11205A], + }, + { + .compatible = "maxim,max11205b", + .data = &max11205_chip_info[TYPE_MAX11205B], + }, + { } +}; +MODULE_DEVICE_TABLE(of, max11205_dt_ids); + +static struct spi_driver max11205_spi_driver = { + .driver = { + .name = "max11205", + .of_match_table = max11205_dt_ids, + }, + .probe = max11205_probe, + .id_table = max11205_spi_ids, +}; +module_spi_driver(max11205_spi_driver); + +MODULE_AUTHOR("Ramona Bolboaca "); +MODULE_DESCRIPTION("MAX11205 ADC driver"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA); From 2bc9cd66eb25d0fefbb081421d6586495e25840e Mon Sep 17 00:00:00 2001 From: Vincent Whitchurch Date: Mon, 29 Aug 2022 11:18:40 +0200 Subject: [PATCH 138/142] iio: Use per-device lockdep class for mlock If an IIO driver uses callbacks from another IIO driver and calls iio_channel_start_all_cb() from one of its buffer setup ops, then lockdep complains due to the lock nesting, as in the below example with lmp91000. Since the locks are being taken on different IIO devices, there is no actual deadlock. Fix the warning by telling lockdep to use a different class for each iio_device. ============================================ WARNING: possible recursive locking detected -------------------------------------------- python3/23 is trying to acquire lock: (&indio_dev->mlock){+.+.}-{3:3}, at: iio_update_buffers but task is already holding lock: (&indio_dev->mlock){+.+.}-{3:3}, at: enable_store other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&indio_dev->mlock); lock(&indio_dev->mlock); *** DEADLOCK *** May be due to missing lock nesting notation 5 locks held by python3/23: #0: (sb_writers#5){.+.+}-{0:0}, at: ksys_write #1: (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter #2: (kn->active#14){.+.+}-{0:0}, at: kernfs_fop_write_iter #3: (&indio_dev->mlock){+.+.}-{3:3}, at: enable_store #4: (&iio_dev_opaque->info_exist_lock){+.+.}-{3:3}, at: iio_update_buffers Call Trace: __mutex_lock iio_update_buffers iio_channel_start_all_cb lmp91000_buffer_postenable __iio_update_buffers enable_store Fixes: 67e17300dc1d76 ("iio: potentiostat: add LMP91000 support") Signed-off-by: Vincent Whitchurch Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220829091840.2791846-1-vincent.whitchurch@axis.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 5 +++++ include/linux/iio/iio-opaque.h | 2 ++ 2 files changed, 7 insertions(+) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index d38623c046cc..583e0e5205a0 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1626,6 +1626,8 @@ static void iio_dev_release(struct device *device) iio_device_detach_buffers(indio_dev); + lockdep_unregister_key(&iio_dev_opaque->mlock_key); + ida_free(&iio_ida, iio_dev_opaque->id); kfree(iio_dev_opaque); } @@ -1685,6 +1687,9 @@ struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv) INIT_LIST_HEAD(&iio_dev_opaque->buffer_list); INIT_LIST_HEAD(&iio_dev_opaque->ioctl_handlers); + lockdep_register_key(&iio_dev_opaque->mlock_key); + lockdep_set_class(&indio_dev->mlock, &iio_dev_opaque->mlock_key); + return indio_dev; } EXPORT_SYMBOL(iio_device_alloc); diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h index 6b3586b3f952..d1f8b30a7c8b 100644 --- a/include/linux/iio/iio-opaque.h +++ b/include/linux/iio/iio-opaque.h @@ -11,6 +11,7 @@ * checked by device drivers but should be considered * read-only as this is a core internal bit * @driver_module: used to make it harder to undercut users + * @mlock_key: lockdep class for iio_dev lock * @info_exist_lock: lock to prevent use during removal * @trig_readonly: mark the current trigger immutable * @event_interface: event chrdevs associated with interrupt lines @@ -42,6 +43,7 @@ struct iio_dev_opaque { int currentmode; int id; struct module *driver_module; + struct lock_class_key mlock_key; struct mutex info_exist_lock; bool trig_readonly; struct iio_event_interface *event_interface; From 835e699ef82adfc85ac4cc3f1f237c1adfdefd20 Mon Sep 17 00:00:00 2001 From: Jagath Jog J Date: Wed, 31 Aug 2022 12:01:16 +0530 Subject: [PATCH 139/142] iio: Add new event type gesture and use direction for single and double tap Add new event type for tap called gesture and the direction can be used to differentiate single and double tap. This may be used by accelerometer sensors to express single and double tap events. For directional tap, modifiers like IIO_MOD_(X/Y/Z) can be used along with singletap and doubletap direction. Signed-off-by: Jagath Jog J Link: https://lore.kernel.org/r/20220831063117.4141-2-jagathjog1996@gmail.com Signed-off-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-iio | 69 +++++++++++++++++++++++++ drivers/iio/industrialio-event.c | 7 ++- include/linux/iio/types.h | 2 + include/uapi/linux/iio/types.h | 3 ++ tools/iio/iio_event_monitor.c | 8 ++- 5 files changed, 87 insertions(+), 2 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 80e8a38d1ee2..66e81c48ee21 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -2068,3 +2068,72 @@ Description: individual channels. If multiple channels are enabled in a scan, then the sampling_frequency of the scan may be computed from the per channel sampling frequencies. + +What: /sys/.../events/in_accel_gesture_singletap_en +What: /sys/.../events/in_accel_gesture_doubletap_en +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Device generates an event on a single or double tap. + +What: /sys/.../events/in_accel_gesture_singletap_value +What: /sys/.../events/in_accel_gesture_doubletap_value +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Specifies the threshold value that the device is comparing + against to generate the tap gesture event. The lower + threshold value increases the sensitivity of tap detection. + Units and the exact meaning of value are device-specific. + +What: /sys/.../events/in_accel_gesture_tap_value_available +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Lists all available threshold values which can be used to + modify the sensitivity of the tap detection. + +What: /sys/.../events/in_accel_gesture_singletap_reset_timeout +What: /sys/.../events/in_accel_gesture_doubletap_reset_timeout +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Specifies the timeout value in seconds for the tap detector + to not to look for another tap event after the event as + occurred. Basically the minimum quiet time between the two + single-tap's or two double-tap's. + +What: /sys/.../events/in_accel_gesture_tap_reset_timeout_available +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Lists all available tap reset timeout values. Units in seconds. + +What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Specifies the minimum quiet time in seconds between the two + taps of a double tap. + +What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_available +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Lists all available delay values between two taps in the double + tap. Units in seconds. + +What: /sys/.../events/in_accel_gesture_tap_maxtomin_time +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Specifies the maximum time difference allowed between upper + and lower peak of tap to consider it as the valid tap event. + Units in seconds. + +What: /sys/.../events/in_accel_gesture_tap_maxtomin_time_available +KernelVersion: 6.1 +Contact: linux-iio@vger.kernel.org +Description: + Lists all available time values between upper peak to lower + peak. Units in seconds. diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index 0e2056894965..3d78da2531a9 100644 --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -231,12 +231,15 @@ static const char * const iio_ev_type_text[] = { [IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive", [IIO_EV_TYPE_CHANGE] = "change", [IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced", + [IIO_EV_TYPE_GESTURE] = "gesture", }; static const char * const iio_ev_dir_text[] = { [IIO_EV_DIR_EITHER] = "either", [IIO_EV_DIR_RISING] = "rising", - [IIO_EV_DIR_FALLING] = "falling" + [IIO_EV_DIR_FALLING] = "falling", + [IIO_EV_DIR_SINGLETAP] = "singletap", + [IIO_EV_DIR_DOUBLETAP] = "doubletap", }; static const char * const iio_ev_info_text[] = { @@ -247,6 +250,8 @@ static const char * const iio_ev_info_text[] = { [IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db", [IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db", [IIO_EV_INFO_TIMEOUT] = "timeout", + [IIO_EV_INFO_RESET_TIMEOUT] = "reset_timeout", + [IIO_EV_INFO_TAP2_MIN_DELAY] = "tap2_min_delay", }; static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr) diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 27143b03909d..82faa98c719a 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -17,6 +17,8 @@ enum iio_event_info { IIO_EV_INFO_HIGH_PASS_FILTER_3DB, IIO_EV_INFO_LOW_PASS_FILTER_3DB, IIO_EV_INFO_TIMEOUT, + IIO_EV_INFO_RESET_TIMEOUT, + IIO_EV_INFO_TAP2_MIN_DELAY, }; #define IIO_VAL_INT 1 diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h index 472cead10d8d..913864221ac4 100644 --- a/include/uapi/linux/iio/types.h +++ b/include/uapi/linux/iio/types.h @@ -105,6 +105,7 @@ enum iio_event_type { IIO_EV_TYPE_MAG_ADAPTIVE, IIO_EV_TYPE_CHANGE, IIO_EV_TYPE_MAG_REFERENCED, + IIO_EV_TYPE_GESTURE, }; enum iio_event_direction { @@ -112,6 +113,8 @@ enum iio_event_direction { IIO_EV_DIR_RISING, IIO_EV_DIR_FALLING, IIO_EV_DIR_NONE, + IIO_EV_DIR_SINGLETAP, + IIO_EV_DIR_DOUBLETAP, }; #endif /* _UAPI_IIO_TYPES_H_ */ diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c index 2f4581658859..b3b3ea399f67 100644 --- a/tools/iio/iio_event_monitor.c +++ b/tools/iio/iio_event_monitor.c @@ -69,12 +69,15 @@ static const char * const iio_ev_type_text[] = { [IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive", [IIO_EV_TYPE_CHANGE] = "change", [IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced", + [IIO_EV_TYPE_GESTURE] = "gesture", }; static const char * const iio_ev_dir_text[] = { [IIO_EV_DIR_EITHER] = "either", [IIO_EV_DIR_RISING] = "rising", - [IIO_EV_DIR_FALLING] = "falling" + [IIO_EV_DIR_FALLING] = "falling", + [IIO_EV_DIR_SINGLETAP] = "singletap", + [IIO_EV_DIR_DOUBLETAP] = "doubletap", }; static const char * const iio_modifier_names[] = { @@ -227,6 +230,7 @@ static bool event_is_known(struct iio_event_data *event) case IIO_EV_TYPE_THRESH_ADAPTIVE: case IIO_EV_TYPE_MAG_ADAPTIVE: case IIO_EV_TYPE_CHANGE: + case IIO_EV_TYPE_GESTURE: break; default: return false; @@ -236,6 +240,8 @@ static bool event_is_known(struct iio_event_data *event) case IIO_EV_DIR_EITHER: case IIO_EV_DIR_RISING: case IIO_EV_DIR_FALLING: + case IIO_EV_DIR_SINGLETAP: + case IIO_EV_DIR_DOUBLETAP: case IIO_EV_DIR_NONE: break; default: From 961db2da159d5191d2a1d9a7cf5ddf1672621a2b Mon Sep 17 00:00:00 2001 From: Jagath Jog J Date: Wed, 31 Aug 2022 12:01:17 +0530 Subject: [PATCH 140/142] iio: accel: bma400: Add support for single and double tap events Add support for single and double tap events based on the tap threshold value, minimum quiet time before and after the tap and minimum time between the taps in the double tap. The INT1 pin is used to interrupt and the event is pushed to userspace. Signed-off-by: Jagath Jog J Link: https://lore.kernel.org/r/20220831063117.4141-3-jagathjog1996@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/bma400.h | 14 ++ drivers/iio/accel/bma400_core.c | 343 +++++++++++++++++++++++++++++++- 2 files changed, 347 insertions(+), 10 deletions(-) diff --git a/drivers/iio/accel/bma400.h b/drivers/iio/accel/bma400.h index e8f802a82300..36edbaff4f7f 100644 --- a/drivers/iio/accel/bma400.h +++ b/drivers/iio/accel/bma400.h @@ -40,6 +40,7 @@ #define BMA400_INT_STAT1_REG 0x0f #define BMA400_INT_STAT2_REG 0x10 #define BMA400_INT12_MAP_REG 0x23 +#define BMA400_INT_ENG_OVRUN_MSK BIT(4) /* Temperature register */ #define BMA400_TEMP_DATA_REG 0x11 @@ -105,6 +106,19 @@ #define BMA400_INT_GEN2_MSK BIT(3) #define BMA400_GEN_HYST_MSK GENMASK(1, 0) +/* TAP config registers */ +#define BMA400_TAP_CONFIG 0x57 +#define BMA400_TAP_CONFIG1 0x58 +#define BMA400_S_TAP_MSK BIT(2) +#define BMA400_D_TAP_MSK BIT(3) +#define BMA400_INT_S_TAP_MSK BIT(10) +#define BMA400_INT_D_TAP_MSK BIT(11) +#define BMA400_TAP_SEN_MSK GENMASK(2, 0) +#define BMA400_TAP_TICSTH_MSK GENMASK(1, 0) +#define BMA400_TAP_QUIET_MSK GENMASK(3, 2) +#define BMA400_TAP_QUIETDT_MSK GENMASK(5, 4) +#define BMA400_TAP_TIM_LIST_LEN 4 + /* * BMA400_SCALE_MIN macro value represents m/s^2 for 1 LSB before * converting to micro values for +-2g range. diff --git a/drivers/iio/accel/bma400_core.c b/drivers/iio/accel/bma400_core.c index c31bdd9b168e..eceb1f8d338d 100644 --- a/drivers/iio/accel/bma400_core.c +++ b/drivers/iio/accel/bma400_core.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -47,6 +48,27 @@ static int bma400_sample_freqs[14]; static const int bma400_osr_range[] = { 0, 1, 3 }; +static int tap_reset_timeout[BMA400_TAP_TIM_LIST_LEN] = { + 300000, + 400000, + 500000, + 600000 +}; + +static int tap_max2min_time[BMA400_TAP_TIM_LIST_LEN] = { + 30000, + 45000, + 60000, + 90000 +}; + +static int double_tap2_min_delay[BMA400_TAP_TIM_LIST_LEN] = { + 20000, + 40000, + 60000, + 80000 +}; + /* See the ACC_CONFIG0 section of the datasheet */ enum bma400_power_mode { POWER_MODE_SLEEP = 0x00, @@ -88,6 +110,7 @@ struct bma400_data { bool step_event_en; bool activity_event_en; unsigned int generic_event_en; + unsigned int tap_event_en_bitmask; /* Correct time stamp alignment */ struct { __le16 buff[3]; @@ -216,6 +239,115 @@ static const struct iio_event_spec bma400_accel_event[] = { BIT(IIO_EV_INFO_HYSTERESIS) | BIT(IIO_EV_INFO_ENABLE), }, + { + .type = IIO_EV_TYPE_GESTURE, + .dir = IIO_EV_DIR_SINGLETAP, + .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE) | + BIT(IIO_EV_INFO_RESET_TIMEOUT), + }, + { + .type = IIO_EV_TYPE_GESTURE, + .dir = IIO_EV_DIR_DOUBLETAP, + .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE) | + BIT(IIO_EV_INFO_RESET_TIMEOUT) | + BIT(IIO_EV_INFO_TAP2_MIN_DELAY), + }, +}; + +static int usec_to_tapreg_raw(int usec, const int *time_list) +{ + int index; + + for (index = 0; index < BMA400_TAP_TIM_LIST_LEN; index++) { + if (usec == time_list[index]) + return index; + } + return -EINVAL; +} + +static ssize_t in_accel_gesture_tap_maxtomin_time_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct bma400_data *data = iio_priv(indio_dev); + int ret, reg_val, raw, vals[2]; + + ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1, ®_val); + if (ret) + return ret; + + raw = FIELD_GET(BMA400_TAP_TICSTH_MSK, reg_val); + vals[0] = 0; + vals[1] = tap_max2min_time[raw]; + + return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, vals); +} + +static ssize_t in_accel_gesture_tap_maxtomin_time_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct bma400_data *data = iio_priv(indio_dev); + int ret, val_int, val_fract, raw; + + ret = iio_str_to_fixpoint(buf, 100000, &val_int, &val_fract); + if (ret) + return ret; + + raw = usec_to_tapreg_raw(val_fract, tap_max2min_time); + if (raw < 0) + return -EINVAL; + + ret = regmap_update_bits(data->regmap, BMA400_TAP_CONFIG1, + BMA400_TAP_TICSTH_MSK, + FIELD_PREP(BMA400_TAP_TICSTH_MSK, raw)); + if (ret) + return ret; + + return len; +} + +static IIO_DEVICE_ATTR_RW(in_accel_gesture_tap_maxtomin_time, 0); + +/* + * Tap interrupts works with 200 Hz input data rate and the time based tap + * controls are in the terms of data samples so the below calculation is + * used to convert the configuration values into seconds. + * e.g.: + * 60 data samples * 0.005 ms = 0.3 seconds. + * 80 data samples * 0.005 ms = 0.4 seconds. + */ + +/* quiet configuration values in seconds */ +static IIO_CONST_ATTR(in_accel_gesture_tap_reset_timeout_available, + "0.3 0.4 0.5 0.6"); + +/* tics_th configuration values in seconds */ +static IIO_CONST_ATTR(in_accel_gesture_tap_maxtomin_time_available, + "0.03 0.045 0.06 0.09"); + +/* quiet_dt configuration values in seconds */ +static IIO_CONST_ATTR(in_accel_gesture_doubletap_tap2_min_delay_available, + "0.02 0.04 0.06 0.08"); + +/* List of sensitivity values available to configure tap interrupts */ +static IIO_CONST_ATTR(in_accel_gesture_tap_value_available, "0 1 2 3 4 5 6 7"); + +static struct attribute *bma400_event_attributes[] = { + &iio_const_attr_in_accel_gesture_tap_value_available.dev_attr.attr, + &iio_const_attr_in_accel_gesture_tap_reset_timeout_available.dev_attr.attr, + &iio_const_attr_in_accel_gesture_tap_maxtomin_time_available.dev_attr.attr, + &iio_const_attr_in_accel_gesture_doubletap_tap2_min_delay_available.dev_attr.attr, + &iio_dev_attr_in_accel_gesture_tap_maxtomin_time.dev_attr.attr, + NULL +}; + +static const struct attribute_group bma400_event_attribute_group = { + .attrs = bma400_event_attributes, }; #define BMA400_ACC_CHANNEL(_index, _axis) { \ @@ -1012,6 +1144,12 @@ static int bma400_read_event_config(struct iio_dev *indio_dev, case IIO_EV_DIR_FALLING: return FIELD_GET(BMA400_INT_GEN2_MSK, data->generic_event_en); + case IIO_EV_DIR_SINGLETAP: + return FIELD_GET(BMA400_S_TAP_MSK, + data->tap_event_en_bitmask); + case IIO_EV_DIR_DOUBLETAP: + return FIELD_GET(BMA400_D_TAP_MSK, + data->tap_event_en_bitmask); default: return -EINVAL; } @@ -1101,6 +1239,80 @@ static int bma400_activity_event_en(struct bma400_data *data, return 0; } +static int bma400_tap_event_en(struct bma400_data *data, + enum iio_event_direction dir, int state) +{ + unsigned int mask, field_value; + int ret; + + /* + * Tap interrupts can be configured only in normal mode. + * See table in section 4.3 "Power modes - performance modes" of + * datasheet v1.2. + */ + if (data->power_mode != POWER_MODE_NORMAL) + return -EINVAL; + + /* + * Tap interrupts are operating with a data rate of 200Hz. + * See section 4.7 "Tap sensing interrupt" in datasheet v1.2. + */ + if (data->sample_freq.hz != 200 && state) { + dev_err(data->dev, "Invalid data rate for tap interrupts.\n"); + return -EINVAL; + } + + ret = regmap_update_bits(data->regmap, BMA400_INT12_MAP_REG, + BMA400_S_TAP_MSK, + FIELD_PREP(BMA400_S_TAP_MSK, state)); + if (ret) + return ret; + + switch (dir) { + case IIO_EV_DIR_SINGLETAP: + mask = BMA400_S_TAP_MSK; + set_mask_bits(&field_value, BMA400_S_TAP_MSK, + FIELD_PREP(BMA400_S_TAP_MSK, state)); + break; + case IIO_EV_DIR_DOUBLETAP: + mask = BMA400_D_TAP_MSK; + set_mask_bits(&field_value, BMA400_D_TAP_MSK, + FIELD_PREP(BMA400_D_TAP_MSK, state)); + break; + default: + return -EINVAL; + } + + ret = regmap_update_bits(data->regmap, BMA400_INT_CONFIG1_REG, mask, + field_value); + if (ret) + return ret; + + set_mask_bits(&data->tap_event_en_bitmask, mask, field_value); + + return 0; +} + +static int bma400_disable_adv_interrupt(struct bma400_data *data) +{ + int ret; + + ret = regmap_write(data->regmap, BMA400_INT_CONFIG0_REG, 0); + if (ret) + return ret; + + ret = regmap_write(data->regmap, BMA400_INT_CONFIG1_REG, 0); + if (ret) + return ret; + + data->tap_event_en_bitmask = 0; + data->generic_event_en = 0; + data->step_event_en = false; + data->activity_event_en = false; + + return 0; +} + static int bma400_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, @@ -1111,10 +1323,20 @@ static int bma400_write_event_config(struct iio_dev *indio_dev, switch (chan->type) { case IIO_ACCEL: - mutex_lock(&data->mutex); - ret = bma400_activity_event_en(data, dir, state); - mutex_unlock(&data->mutex); - return ret; + switch (type) { + case IIO_EV_TYPE_MAG: + mutex_lock(&data->mutex); + ret = bma400_activity_event_en(data, dir, state); + mutex_unlock(&data->mutex); + return ret; + case IIO_EV_TYPE_GESTURE: + mutex_lock(&data->mutex); + ret = bma400_tap_event_en(data, dir, state); + mutex_unlock(&data->mutex); + return ret; + default: + return -EINVAL; + } case IIO_STEPS: mutex_lock(&data->mutex); ret = bma400_steps_event_enable(data, state); @@ -1157,10 +1379,13 @@ static int bma400_read_event_value(struct iio_dev *indio_dev, int *val, int *val2) { struct bma400_data *data = iio_priv(indio_dev); - int ret, reg; + int ret, reg, reg_val, raw; - switch (chan->type) { - case IIO_ACCEL: + if (chan->type != IIO_ACCEL) + return -EINVAL; + + switch (type) { + case IIO_EV_TYPE_MAG: reg = get_gen_config_reg(dir); if (reg < 0) return -EINVAL; @@ -1196,6 +1421,39 @@ static int bma400_read_event_value(struct iio_dev *indio_dev, default: return -EINVAL; } + case IIO_EV_TYPE_GESTURE: + switch (info) { + case IIO_EV_INFO_VALUE: + ret = regmap_read(data->regmap, BMA400_TAP_CONFIG, + ®_val); + if (ret) + return ret; + + *val = FIELD_GET(BMA400_TAP_SEN_MSK, reg_val); + return IIO_VAL_INT; + case IIO_EV_INFO_RESET_TIMEOUT: + ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1, + ®_val); + if (ret) + return ret; + + raw = FIELD_GET(BMA400_TAP_QUIET_MSK, reg_val); + *val = 0; + *val2 = tap_reset_timeout[raw]; + return IIO_VAL_INT_PLUS_MICRO; + case IIO_EV_INFO_TAP2_MIN_DELAY: + ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1, + ®_val); + if (ret) + return ret; + + raw = FIELD_GET(BMA400_TAP_QUIETDT_MSK, reg_val); + *val = 0; + *val2 = double_tap2_min_delay[raw]; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } default: return -EINVAL; } @@ -1209,10 +1467,13 @@ static int bma400_write_event_value(struct iio_dev *indio_dev, int val, int val2) { struct bma400_data *data = iio_priv(indio_dev); - int reg, ret; + int reg, ret, raw; - switch (chan->type) { - case IIO_ACCEL: + if (chan->type != IIO_ACCEL) + return -EINVAL; + + switch (type) { + case IIO_EV_TYPE_MAG: reg = get_gen_config_reg(dir); if (reg < 0) return -EINVAL; @@ -1248,6 +1509,40 @@ static int bma400_write_event_value(struct iio_dev *indio_dev, default: return -EINVAL; } + case IIO_EV_TYPE_GESTURE: + switch (info) { + case IIO_EV_INFO_VALUE: + if (val < 0 || val > 7) + return -EINVAL; + + return regmap_update_bits(data->regmap, + BMA400_TAP_CONFIG, + BMA400_TAP_SEN_MSK, + FIELD_PREP(BMA400_TAP_SEN_MSK, + val)); + case IIO_EV_INFO_RESET_TIMEOUT: + raw = usec_to_tapreg_raw(val2, tap_reset_timeout); + if (raw < 0) + return -EINVAL; + + return regmap_update_bits(data->regmap, + BMA400_TAP_CONFIG1, + BMA400_TAP_QUIET_MSK, + FIELD_PREP(BMA400_TAP_QUIET_MSK, + raw)); + case IIO_EV_INFO_TAP2_MIN_DELAY: + raw = usec_to_tapreg_raw(val2, double_tap2_min_delay); + if (raw < 0) + return -EINVAL; + + return regmap_update_bits(data->regmap, + BMA400_TAP_CONFIG1, + BMA400_TAP_QUIETDT_MSK, + FIELD_PREP(BMA400_TAP_QUIETDT_MSK, + raw)); + default: + return -EINVAL; + } default: return -EINVAL; } @@ -1287,6 +1582,7 @@ static const struct iio_info bma400_info = { .write_event_config = bma400_write_event_config, .write_event_value = bma400_write_event_value, .read_event_value = bma400_read_event_value, + .event_attrs = &bma400_event_attribute_group, }; static const struct iio_trigger_ops bma400_trigger_ops = { @@ -1350,6 +1646,32 @@ static irqreturn_t bma400_interrupt(int irq, void *private) if (ret || !data->status) goto unlock_err; + /* + * Disable all advance interrupts if interrupt engine overrun occurs. + * See section 4.7 "Interrupt engine overrun" in datasheet v1.2. + */ + if (FIELD_GET(BMA400_INT_ENG_OVRUN_MSK, le16_to_cpu(data->status))) { + bma400_disable_adv_interrupt(data); + dev_err(data->dev, "Interrupt engine overrun\n"); + goto unlock_err; + } + + if (FIELD_GET(BMA400_INT_S_TAP_MSK, le16_to_cpu(data->status))) + iio_push_event(indio_dev, + IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, + IIO_MOD_X_OR_Y_OR_Z, + IIO_EV_TYPE_GESTURE, + IIO_EV_DIR_SINGLETAP), + timestamp); + + if (FIELD_GET(BMA400_INT_D_TAP_MSK, le16_to_cpu(data->status))) + iio_push_event(indio_dev, + IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, + IIO_MOD_X_OR_Y_OR_Z, + IIO_EV_TYPE_GESTURE, + IIO_EV_DIR_DOUBLETAP), + timestamp); + if (FIELD_GET(BMA400_INT_GEN1_MSK, le16_to_cpu(data->status))) ev_dir = IIO_EV_DIR_RISING; @@ -1467,5 +1789,6 @@ int bma400_probe(struct device *dev, struct regmap *regmap, int irq, EXPORT_SYMBOL_NS(bma400_probe, IIO_BMA400); MODULE_AUTHOR("Dan Robertson "); +MODULE_AUTHOR("Jagath Jog J "); MODULE_DESCRIPTION("Bosch BMA400 triaxial acceleration sensor core"); MODULE_LICENSE("GPL"); From c13219cececed248df6feacb0d33326266234b7b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 21 Aug 2022 17:10:58 +0100 Subject: [PATCH 141/142] iio: adc: max1363: Drop provision to provide an IIO channel map via platform data Back in the days of board files, platform data was used to provide information on the mapping from ADC channel to an analog signal from another device. We've long since moved to doing this via device tree. Hence drop the support from the max1363 driver which is the only driver still providing this. Signed-off-by: Jonathan Cameron Link: https://lore.kernel.org/r/20220821161058.2207185-1-jic23@kernel.org --- drivers/iio/adc/max1363.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c index eef55ed4814a..a28cf86cdce8 100644 --- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -29,7 +29,6 @@ #include #include #include -#include #include #include #include @@ -1595,11 +1594,6 @@ static int max1363_probe(struct i2c_client *client, if (!indio_dev) return -ENOMEM; - ret = devm_iio_map_array_register(&client->dev, indio_dev, - client->dev.platform_data); - if (ret < 0) - return ret; - st = iio_priv(indio_dev); mutex_init(&st->lock); From 2f61ff8272967c9bdcba810aa978170814b08f7c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 7 Aug 2022 20:04:13 +0100 Subject: [PATCH 142/142] iio: pressure: icp10100: Switch from UNIVERSAL to DEFINE_RUNTIME_DEV_PM_OPS(). The suspend and resume callbacks in this driver appear to be safe to call repeatedly, but why do so when we can use the DEFINE_RUNTIME_DEV_PM_OPS() macro to supply callbacks that check if we are already runtime suspended before doing unnecessary work. Signed-off-by: Jonathan Cameron Cc: Jean-Baptiste Maneyrol Acked-by: Jean-Baptiste Maneyrol Link: https://lore.kernel.org/r/20220807190414.1039028-2-jic23@kernel.org --- drivers/iio/pressure/icp10100.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/iio/pressure/icp10100.c b/drivers/iio/pressure/icp10100.c index af4621eaa6b5..b62f28585db5 100644 --- a/drivers/iio/pressure/icp10100.c +++ b/drivers/iio/pressure/icp10100.c @@ -595,7 +595,7 @@ static int icp10100_probe(struct i2c_client *client, return devm_iio_device_register(&client->dev, indio_dev); } -static int __maybe_unused icp10100_suspend(struct device *dev) +static int icp10100_suspend(struct device *dev) { struct icp10100_state *st = iio_priv(dev_get_drvdata(dev)); int ret; @@ -607,7 +607,7 @@ static int __maybe_unused icp10100_suspend(struct device *dev) return ret; } -static int __maybe_unused icp10100_resume(struct device *dev) +static int icp10100_resume(struct device *dev) { struct icp10100_state *st = iio_priv(dev_get_drvdata(dev)); int ret; @@ -626,8 +626,8 @@ out_unlock: return ret; } -static UNIVERSAL_DEV_PM_OPS(icp10100_pm, icp10100_suspend, icp10100_resume, - NULL); +static DEFINE_RUNTIME_DEV_PM_OPS(icp10100_pm, icp10100_suspend, icp10100_resume, + NULL); static const struct of_device_id icp10100_of_match[] = { { @@ -646,7 +646,7 @@ MODULE_DEVICE_TABLE(i2c, icp10100_id); static struct i2c_driver icp10100_driver = { .driver = { .name = "icp10100", - .pm = &icp10100_pm, + .pm = pm_ptr(&icp10100_pm), .of_match_table = icp10100_of_match, }, .probe = icp10100_probe,