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iio: accel: kxcjk1013: add support for KXTF9 

KXTF9 has mostly compatible register layout to KXCJK accelerometer.
There is no motion direction interrupt support, but there is tap
direction detection instead (not implemented in this patch).

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Michał Mirosław 2017-09-17 17:01:04 +02:00 committed by Jonathan Cameron
parent d2ff1956ba
commit 1540d0106b
2 changed files with 104 additions and 15 deletions
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4
drivers/iio/accel/Kconfig
View File

@ -219,8 +219,8 @@ config KXCJK1013
select IIO_TRIGGERED_BUFFER
help
Say Y here if you want to build a driver for the Kionix KXCJK-1013
triaxial acceleration sensor. This driver also supports KXCJ9-1008
and KXTJ2-1009.
triaxial acceleration sensor. This driver also supports KXCJ9-1008,
KXTJ2-1009 and KXTF9.
To compile this driver as a module, choose M here: the module will
be called kxcjk-1013.

115
drivers/iio/accel/kxcjk-1013.c
View File

@ -34,6 +34,13 @@
#define KXCJK1013_DRV_NAME "kxcjk1013"
#define KXCJK1013_IRQ_NAME "kxcjk1013_event"
#define KXTF9_REG_HP_XOUT_L 0x00
#define KXTF9_REG_HP_XOUT_H 0x01
#define KXTF9_REG_HP_YOUT_L 0x02
#define KXTF9_REG_HP_YOUT_H 0x03
#define KXTF9_REG_HP_ZOUT_L 0x04
#define KXTF9_REG_HP_ZOUT_H 0x05
#define KXCJK1013_REG_XOUT_L 0x06
/*
* From low byte X axis register, all the other addresses of Y and Z can be
@ -48,17 +55,33 @@
#define KXCJK1013_REG_DCST_RESP 0x0C
#define KXCJK1013_REG_WHO_AM_I 0x0F
#define KXCJK1013_REG_INT_SRC1 0x16
#define KXTF9_REG_TILT_POS_CUR 0x10
#define KXTF9_REG_TILT_POS_PREV 0x11
#define KXTF9_REG_INT_SRC1 0x15
#define KXCJK1013_REG_INT_SRC1 0x16 /* compatible, but called INT_SRC2 in KXTF9 ds */
#define KXCJK1013_REG_INT_SRC2 0x17
#define KXCJK1013_REG_STATUS_REG 0x18
#define KXCJK1013_REG_INT_REL 0x1A
#define KXCJK1013_REG_CTRL1 0x1B
#define KXCJK1013_REG_CTRL2 0x1D
#define KXTF9_REG_CTRL2 0x1C
#define KXCJK1013_REG_CTRL2 0x1D /* mostly compatible, CTRL_REG3 in KTXF9 ds */
#define KXCJK1013_REG_INT_CTRL1 0x1E
#define KXCJK1013_REG_INT_CTRL2 0x1F
#define KXTF9_REG_INT_CTRL3 0x20
#define KXCJK1013_REG_DATA_CTRL 0x21
#define KXTF9_REG_TILT_TIMER 0x28
#define KXCJK1013_REG_WAKE_TIMER 0x29
#define KXTF9_REG_TDT_TIMER 0x2B
#define KXTF9_REG_TDT_THRESH_H 0x2C
#define KXTF9_REG_TDT_THRESH_L 0x2D
#define KXTF9_REG_TDT_TAP_TIMER 0x2E
#define KXTF9_REG_TDT_TOTAL_TIMER 0x2F
#define KXTF9_REG_TDT_LATENCY_TIMER 0x30
#define KXTF9_REG_TDT_WINDOW_TIMER 0x31
#define KXCJK1013_REG_SELF_TEST 0x3A
#define KXTF9_REG_WAKE_THRESH 0x5A
#define KXTF9_REG_TILT_ANGLE 0x5C
#define KXTF9_REG_HYST_SET 0x5F
#define KXCJK1013_REG_WAKE_THRES 0x6A
#define KXCJK1013_REG_CTRL1_BIT_PC1 BIT(7)
@ -68,18 +91,32 @@
#define KXCJK1013_REG_CTRL1_BIT_GSEL0 BIT(3)
#define KXCJK1013_REG_CTRL1_BIT_WUFE BIT(1)
#define KXCJK1013_REG_INT_CTRL1_BIT_IEU BIT(2) /* KXTF9 */
#define KXCJK1013_REG_INT_CTRL1_BIT_IEL BIT(3)
#define KXCJK1013_REG_INT_CTRL1_BIT_IEA BIT(4)
#define KXCJK1013_REG_INT_CTRL1_BIT_IEN BIT(5)
#define KXTF9_REG_TILT_BIT_LEFT_EDGE BIT(5)
#define KXTF9_REG_TILT_BIT_RIGHT_EDGE BIT(4)
#define KXTF9_REG_TILT_BIT_LOWER_EDGE BIT(3)
#define KXTF9_REG_TILT_BIT_UPPER_EDGE BIT(2)
#define KXTF9_REG_TILT_BIT_FACE_DOWN BIT(1)
#define KXTF9_REG_TILT_BIT_FACE_UP BIT(0)
#define KXCJK1013_DATA_MASK_12_BIT 0x0FFF
#define KXCJK1013_MAX_STARTUP_TIME_US 100000
#define KXCJK1013_SLEEP_DELAY_MS 2000
#define KXCJK1013_REG_INT_SRC1_BIT_TPS BIT(0) /* KXTF9 */
#define KXCJK1013_REG_INT_SRC1_BIT_WUFS BIT(1)
#define KXCJK1013_REG_INT_SRC1_MASK_TDTS (BIT(2) | BIT(3)) /* KXTF9 */
#define KXCJK1013_REG_INT_SRC1_TAP_NONE 0
#define KXCJK1013_REG_INT_SRC1_TAP_SINGLE BIT(2)
#define KXCJK1013_REG_INT_SRC1_TAP_DOUBLE BIT(3)
#define KXCJK1013_REG_INT_SRC1_BIT_DRDY BIT(4)
/* KXCJK: INT_SOURCE2: motion detect, KXTF9: INT_SRC_REG1: tap detect */
#define KXCJK1013_REG_INT_SRC2_BIT_ZP BIT(0)
#define KXCJK1013_REG_INT_SRC2_BIT_ZN BIT(1)
#define KXCJK1013_REG_INT_SRC2_BIT_YP BIT(2)
@ -93,6 +130,7 @@ enum kx_chipset {
KXCJK1013,
KXCJ91008,
KXTJ21009,
KXTF9,
KX_MAX_CHIPS /* this must be last */
};
@ -158,6 +196,18 @@ static const struct kx_odr_map samp_freq_table[] = {
static const char *const kxcjk1013_samp_freq_avail =
"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600";
static const struct kx_odr_map kxtf9_samp_freq_table[] = {
{ 25, 0, 0x01, 0x00 },
{ 50, 0, 0x02, 0x01 },
{ 100, 0, 0x03, 0x01 },
{ 200, 0, 0x04, 0x01 },
{ 400, 0, 0x05, 0x01 },
{ 800, 0, 0x06, 0x01 },
};
static const char *const kxtf9_samp_freq_avail =
"25 50 100 200 400 800";
/* Refer to section 4 of the specification */
static const struct {
int odr_bits;
@ -208,6 +258,15 @@ static const struct {
{0x06, 3000},
{0x07, 2000},
},
/* KXTF9 */
{
{0x01, 81000},
{0x02, 41000},
{0x03, 21000},
{0x04, 11000},
{0x05, 5100},
{0x06, 2700},
},
};
static const struct {
@ -404,7 +463,7 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
{
int ret;
int waketh_reg, ret;
ret = i2c_smbus_write_byte_data(data->client,
KXCJK1013_REG_WAKE_TIMER,
@ -415,8 +474,9 @@ static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
return ret;
}
ret = i2c_smbus_write_byte_data(data->client,
KXCJK1013_REG_WAKE_THRES,
waketh_reg = data->chipset == KXTF9 ?
KXTF9_REG_WAKE_THRESH : KXCJK1013_REG_WAKE_THRES;
ret = i2c_smbus_write_byte_data(data->client, waketh_reg,
data->wake_thres);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
@ -590,9 +650,14 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
if (ret < 0)
return ret;
odr_setting = kxcjk1013_find_odr_value(samp_freq_table,
ARRAY_SIZE(samp_freq_table),
val, val2);
if (data->chipset == KXTF9)
odr_setting = kxcjk1013_find_odr_value(kxtf9_samp_freq_table,
ARRAY_SIZE(kxtf9_samp_freq_table),
val, val2);
else
odr_setting = kxcjk1013_find_odr_value(samp_freq_table,
ARRAY_SIZE(samp_freq_table),
val, val2);
if (IS_ERR(odr_setting))
return PTR_ERR(odr_setting);
@ -629,9 +694,14 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
{
return kxcjk1013_convert_odr_value(samp_freq_table,
ARRAY_SIZE(samp_freq_table),
data->odr_bits, val, val2);
if (data->chipset == KXTF9)
return kxcjk1013_convert_odr_value(kxtf9_samp_freq_table,
ARRAY_SIZE(kxtf9_samp_freq_table),
data->odr_bits, val, val2);
else
return kxcjk1013_convert_odr_value(samp_freq_table,
ARRAY_SIZE(samp_freq_table),
data->odr_bits, val, val2);
}
static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
@ -886,7 +956,16 @@ static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%s\n", kxcjk1013_samp_freq_avail);
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct kxcjk1013_data *data = iio_priv(indio_dev);
const char *str;
if (data->chipset == KXTF9)
str = kxtf9_samp_freq_avail;
else
str = kxcjk1013_samp_freq_avail;
return sprintf(buf, "%s\n", str);
}
static IIO_DEVICE_ATTR(in_accel_sampling_frequency_available, S_IRUGO,
@ -1119,7 +1198,16 @@ static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
}
if (ret & KXCJK1013_REG_INT_SRC1_BIT_WUFS) {
kxcjk1013_report_motion_event(indio_dev);
if (data->chipset == KXTF9)
iio_push_event(indio_dev,
IIO_MOD_EVENT_CODE(IIO_ACCEL,
0,
IIO_MOD_X_AND_Y_AND_Z,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
data->timestamp);
else
kxcjk1013_report_motion_event(indio_dev);
}
ack_intr:
@ -1412,6 +1500,7 @@ static const struct i2c_device_id kxcjk1013_id[] = {
{"kxcjk1013", KXCJK1013},
{"kxcj91008", KXCJ91008},
{"kxtj21009", KXTJ21009},
{"kxtf9", KXTF9},
{"SMO8500", KXCJ91008},
{}
};