power: supply: Add support for mps mp2629 battery charger
The mp2629 provides switching-mode battery charge management for single-cell Li-ion or Li-polymer battery. Driver supports the access/control input source and battery charging parameters. Signed-off-by: Saravanan Sekar <sravanhome@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Saravanan Sekar
Lee Jones
parent
7abd9fb646
commit
3bc6d790c3
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@ -541,6 +541,16 @@ config CHARGER_MAX8998
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Say Y to enable support for the battery charger control sysfs and
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platform data of MAX8998/LP3974 PMICs.
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config CHARGER_MP2629
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tristate "Monolithic power system MP2629 Battery charger"
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depends on MFD_MP2629
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depends on MP2629_ADC
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depends on IIO
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help
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Select this option to enable support for Monolithic power system
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Battery charger. This driver provides Battery charger power management
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functions on the systems.
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config CHARGER_QCOM_SMBB
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tristate "Qualcomm Switch-Mode Battery Charger and Boost"
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depends on MFD_SPMI_PMIC || COMPILE_TEST
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@ -75,6 +75,7 @@ obj-$(CONFIG_CHARGER_MAX77650) += max77650-charger.o
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obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o
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obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
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obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
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obj-$(CONFIG_CHARGER_MP2629) += mp2629_charger.o
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obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o
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obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o
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obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o
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@ -0,0 +1,669 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* MP2629 battery charger driver
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*
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* Copyright 2020 Monolithic Power Systems, Inc
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*
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* Author: Saravanan Sekar <sravanhome@gmail.com>
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*/
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#include <linux/bits.h>
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#include <linux/iio/consumer.h>
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#include <linux/iio/types.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/mp2629.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/regmap.h>
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#define MP2629_REG_INPUT_ILIM 0x00
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#define MP2629_REG_INPUT_VLIM 0x01
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#define MP2629_REG_CHARGE_CTRL 0x04
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#define MP2629_REG_CHARGE_ILIM 0x05
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#define MP2629_REG_PRECHARGE 0x06
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#define MP2629_REG_TERM_CURRENT 0x06
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#define MP2629_REG_CHARGE_VLIM 0x07
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#define MP2629_REG_TIMER_CTRL 0x08
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#define MP2629_REG_IMPEDANCE_COMP 0x09
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#define MP2629_REG_INTERRUPT 0x0b
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#define MP2629_REG_STATUS 0x0c
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#define MP2629_REG_FAULT 0x0d
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#define MP2629_MASK_INPUT_TYPE GENMASK(7, 5)
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#define MP2629_MASK_CHARGE_TYPE GENMASK(4, 3)
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#define MP2629_MASK_CHARGE_CTRL GENMASK(5, 4)
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#define MP2629_MASK_WDOG_CTRL GENMASK(5, 4)
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#define MP2629_MASK_IMPEDANCE GENMASK(7, 4)
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#define MP2629_INPUTSOURCE_CHANGE GENMASK(7, 5)
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#define MP2629_CHARGING_CHANGE GENMASK(4, 3)
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#define MP2629_FAULT_BATTERY BIT(3)
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#define MP2629_FAULT_THERMAL BIT(4)
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#define MP2629_FAULT_INPUT BIT(5)
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#define MP2629_FAULT_OTG BIT(6)
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#define MP2629_MAX_BATT_CAPACITY 100
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#define MP2629_PROPS(_idx, _min, _max, _step) \
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[_idx] = { \
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.min = _min, \
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.max = _max, \
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.step = _step, \
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}
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enum mp2629_source_type {
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MP2629_SOURCE_TYPE_NO_INPUT,
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MP2629_SOURCE_TYPE_NON_STD,
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MP2629_SOURCE_TYPE_SDP,
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MP2629_SOURCE_TYPE_CDP,
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MP2629_SOURCE_TYPE_DCP,
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MP2629_SOURCE_TYPE_OTG = 7,
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};
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enum mp2629_field {
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INPUT_ILIM,
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INPUT_VLIM,
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CHARGE_ILIM,
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CHARGE_VLIM,
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PRECHARGE,
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TERM_CURRENT,
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MP2629_MAX_FIELD
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};
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struct mp2629_charger {
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struct device *dev;
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int status;
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int fault;
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struct regmap *regmap;
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struct regmap_field *regmap_fields[MP2629_MAX_FIELD];
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struct mutex lock;
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struct power_supply *usb;
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struct power_supply *battery;
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struct iio_channel *iiochan[MP2629_ADC_CHAN_END];
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};
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struct mp2629_prop {
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int reg;
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int mask;
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int min;
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int max;
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int step;
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int shift;
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};
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static enum power_supply_usb_type mp2629_usb_types[] = {
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POWER_SUPPLY_USB_TYPE_SDP,
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POWER_SUPPLY_USB_TYPE_DCP,
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POWER_SUPPLY_USB_TYPE_CDP,
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POWER_SUPPLY_USB_TYPE_PD_DRP,
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POWER_SUPPLY_USB_TYPE_UNKNOWN
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};
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static enum power_supply_property mp2629_charger_usb_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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POWER_SUPPLY_PROP_USB_TYPE,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
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POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
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};
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static enum power_supply_property mp2629_charger_bat_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_CHARGE_TYPE,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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POWER_SUPPLY_PROP_CAPACITY,
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POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
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POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
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POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
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POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
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POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
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POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
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};
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static struct mp2629_prop props[] = {
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MP2629_PROPS(INPUT_ILIM, 100000, 3250000, 50000),
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MP2629_PROPS(INPUT_VLIM, 3800000, 5300000, 100000),
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MP2629_PROPS(CHARGE_ILIM, 320000, 4520000, 40000),
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MP2629_PROPS(CHARGE_VLIM, 3400000, 4670000, 10000),
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MP2629_PROPS(PRECHARGE, 120000, 720000, 40000),
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MP2629_PROPS(TERM_CURRENT, 80000, 680000, 40000),
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};
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static const struct reg_field mp2629_reg_fields[] = {
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[INPUT_ILIM] = REG_FIELD(MP2629_REG_INPUT_ILIM, 0, 5),
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[INPUT_VLIM] = REG_FIELD(MP2629_REG_INPUT_VLIM, 0, 3),
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[CHARGE_ILIM] = REG_FIELD(MP2629_REG_CHARGE_ILIM, 0, 6),
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[CHARGE_VLIM] = REG_FIELD(MP2629_REG_CHARGE_VLIM, 1, 7),
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[PRECHARGE] = REG_FIELD(MP2629_REG_PRECHARGE, 4, 7),
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[TERM_CURRENT] = REG_FIELD(MP2629_REG_TERM_CURRENT, 0, 3),
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};
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static char *adc_chan_name[] = {
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"mp2629-batt-volt",
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"mp2629-system-volt",
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"mp2629-input-volt",
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"mp2629-batt-current",
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"mp2629-input-current",
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};
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static int mp2629_read_adc(struct mp2629_charger *charger,
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enum mp2629_adc_chan ch,
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union power_supply_propval *val)
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{
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int ret;
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int chval;
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ret = iio_read_channel_processed(charger->iiochan[ch], &chval);
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if (ret)
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return ret;
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val->intval = chval * 1000;
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return 0;
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}
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static int mp2629_get_prop(struct mp2629_charger *charger,
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enum mp2629_field fld,
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union power_supply_propval *val)
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{
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int ret;
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unsigned int rval;
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ret = regmap_field_read(charger->regmap_fields[fld], &rval);
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if (ret)
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return ret;
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val->intval = rval * props[fld].step + props[fld].min;
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return 0;
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}
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static int mp2629_set_prop(struct mp2629_charger *charger,
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enum mp2629_field fld,
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const union power_supply_propval *val)
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{
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unsigned int rval;
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if (val->intval < props[fld].min || val->intval > props[fld].max)
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return -EINVAL;
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rval = (val->intval - props[fld].min) / props[fld].step;
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return regmap_field_write(charger->regmap_fields[fld], rval);
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}
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static int mp2629_get_battery_capacity(struct mp2629_charger *charger,
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union power_supply_propval *val)
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{
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union power_supply_propval vnow, vlim;
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int ret;
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ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, &vnow);
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if (ret)
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return ret;
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ret = mp2629_get_prop(charger, CHARGE_VLIM, &vlim);
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if (ret)
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return ret;
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val->intval = (vnow.intval * 100) / vlim.intval;
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val->intval = min(val->intval, MP2629_MAX_BATT_CAPACITY);
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return 0;
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}
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static int mp2629_charger_battery_get_prop(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent);
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unsigned int rval;
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int ret = 0;
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switch (psp) {
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, val);
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break;
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case POWER_SUPPLY_PROP_CURRENT_NOW:
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ret = mp2629_read_adc(charger, MP2629_BATT_CURRENT, val);
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break;
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
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val->intval = 4520000;
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break;
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
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val->intval = 4670000;
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break;
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case POWER_SUPPLY_PROP_CAPACITY:
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ret = mp2629_get_battery_capacity(charger, val);
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break;
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case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
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ret = mp2629_get_prop(charger, TERM_CURRENT, val);
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break;
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case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
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ret = mp2629_get_prop(charger, PRECHARGE, val);
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break;
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
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ret = mp2629_get_prop(charger, CHARGE_VLIM, val);
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break;
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
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ret = mp2629_get_prop(charger, CHARGE_ILIM, val);
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break;
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case POWER_SUPPLY_PROP_HEALTH:
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if (!charger->fault)
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val->intval = POWER_SUPPLY_HEALTH_GOOD;
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if (MP2629_FAULT_BATTERY & charger->fault)
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val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
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else if (MP2629_FAULT_THERMAL & charger->fault)
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val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
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else if (MP2629_FAULT_INPUT & charger->fault)
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val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
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break;
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case POWER_SUPPLY_PROP_STATUS:
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ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval);
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if (ret)
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break;
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rval = (rval & MP2629_MASK_CHARGE_TYPE) >> 3;
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switch (rval) {
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case 0x00:
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val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
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break;
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case 0x01:
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case 0x10:
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val->intval = POWER_SUPPLY_STATUS_CHARGING;
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break;
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case 0x11:
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val->intval = POWER_SUPPLY_STATUS_FULL;
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}
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break;
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case POWER_SUPPLY_PROP_CHARGE_TYPE:
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ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval);
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if (ret)
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break;
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rval = (rval & MP2629_MASK_CHARGE_TYPE) >> 3;
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switch (rval) {
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case 0x00:
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val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
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break;
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case 0x01:
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val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
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break;
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case 0x10:
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val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
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break;
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default:
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val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
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}
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break;
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default:
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return -EINVAL;
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}
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return ret;
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}
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static int mp2629_charger_battery_set_prop(struct power_supply *psy,
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enum power_supply_property psp,
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const union power_supply_propval *val)
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{
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struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent);
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switch (psp) {
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case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
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return mp2629_set_prop(charger, TERM_CURRENT, val);
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case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
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return mp2629_set_prop(charger, PRECHARGE, val);
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
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return mp2629_set_prop(charger, CHARGE_VLIM, val);
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
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return mp2629_set_prop(charger, CHARGE_ILIM, val);
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default:
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return -EINVAL;
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}
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}
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static int mp2629_charger_usb_get_prop(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent);
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unsigned int rval;
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int ret;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval);
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if (ret)
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break;
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val->intval = !!(rval & MP2629_MASK_INPUT_TYPE);
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break;
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case POWER_SUPPLY_PROP_USB_TYPE:
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ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval);
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if (ret)
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break;
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rval = (rval & MP2629_MASK_INPUT_TYPE) >> 5;
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switch (rval) {
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case MP2629_SOURCE_TYPE_SDP:
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val->intval = POWER_SUPPLY_USB_TYPE_SDP;
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break;
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case MP2629_SOURCE_TYPE_CDP:
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val->intval = POWER_SUPPLY_USB_TYPE_CDP;
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break;
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case MP2629_SOURCE_TYPE_DCP:
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val->intval = POWER_SUPPLY_USB_TYPE_DCP;
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break;
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case MP2629_SOURCE_TYPE_OTG:
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val->intval = POWER_SUPPLY_USB_TYPE_PD_DRP;
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break;
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default:
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val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
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break;
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}
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break;
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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ret = mp2629_read_adc(charger, MP2629_INPUT_VOLT, val);
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break;
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case POWER_SUPPLY_PROP_CURRENT_NOW:
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ret = mp2629_read_adc(charger, MP2629_INPUT_CURRENT, val);
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break;
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case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
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ret = mp2629_get_prop(charger, INPUT_VLIM, val);
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break;
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case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
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ret = mp2629_get_prop(charger, INPUT_ILIM, val);
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break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mp2629_charger_usb_set_prop(struct power_supply *psy,
|
||||
enum power_supply_property psp,
|
||||
const union power_supply_propval *val)
|
||||
{
|
||||
struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent);
|
||||
|
||||
switch (psp) {
|
||||
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
|
||||
return mp2629_set_prop(charger, INPUT_VLIM, val);
|
||||
|
||||
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
|
||||
return mp2629_set_prop(charger, INPUT_ILIM, val);
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static int mp2629_charger_battery_prop_writeable(struct power_supply *psy,
|
||||
enum power_supply_property psp)
|
||||
{
|
||||
return (psp == POWER_SUPPLY_PROP_PRECHARGE_CURRENT) ||
|
||||
(psp == POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT) ||
|
||||
(psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT) ||
|
||||
(psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE);
|
||||
}
|
||||
|
||||
static int mp2629_charger_usb_prop_writeable(struct power_supply *psy,
|
||||
enum power_supply_property psp)
|
||||
{
|
||||
return (psp == POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT) ||
|
||||
(psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT);
|
||||
}
|
||||
|
||||
static irqreturn_t mp2629_irq_handler(int irq, void *dev_id)
|
||||
{
|
||||
struct mp2629_charger *charger = dev_id;
|
||||
unsigned int rval;
|
||||
int ret;
|
||||
|
||||
mutex_lock(&charger->lock);
|
||||
|
||||
ret = regmap_read(charger->regmap, MP2629_REG_FAULT, &rval);
|
||||
if (ret)
|
||||
goto unlock;
|
||||
|
||||
if (rval) {
|
||||
charger->fault = rval;
|
||||
if (MP2629_FAULT_BATTERY & rval)
|
||||
dev_err(charger->dev, "Battery fault OVP\n");
|
||||
else if (MP2629_FAULT_THERMAL & rval)
|
||||
dev_err(charger->dev, "Thermal shutdown fault\n");
|
||||
else if (MP2629_FAULT_INPUT & rval)
|
||||
dev_err(charger->dev, "no input or input OVP\n");
|
||||
else if (MP2629_FAULT_OTG & rval)
|
||||
dev_err(charger->dev, "VIN overloaded\n");
|
||||
|
||||
goto unlock;
|
||||
}
|
||||
|
||||
ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval);
|
||||
if (ret)
|
||||
goto unlock;
|
||||
|
||||
if (rval & MP2629_INPUTSOURCE_CHANGE)
|
||||
power_supply_changed(charger->usb);
|
||||
else if (rval & MP2629_CHARGING_CHANGE)
|
||||
power_supply_changed(charger->battery);
|
||||
|
||||
unlock:
|
||||
mutex_unlock(&charger->lock);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static const struct power_supply_desc mp2629_usb_desc = {
|
||||
.name = "mp2629_usb",
|
||||
.type = POWER_SUPPLY_TYPE_USB,
|
||||
.usb_types = mp2629_usb_types,
|
||||
.num_usb_types = ARRAY_SIZE(mp2629_usb_types),
|
||||
.properties = mp2629_charger_usb_props,
|
||||
.num_properties = ARRAY_SIZE(mp2629_charger_usb_props),
|
||||
.get_property = mp2629_charger_usb_get_prop,
|
||||
.set_property = mp2629_charger_usb_set_prop,
|
||||
.property_is_writeable = mp2629_charger_usb_prop_writeable,
|
||||
};
|
||||
|
||||
static const struct power_supply_desc mp2629_battery_desc = {
|
||||
.name = "mp2629_battery",
|
||||
.type = POWER_SUPPLY_TYPE_BATTERY,
|
||||
.properties = mp2629_charger_bat_props,
|
||||
.num_properties = ARRAY_SIZE(mp2629_charger_bat_props),
|
||||
.get_property = mp2629_charger_battery_get_prop,
|
||||
.set_property = mp2629_charger_battery_set_prop,
|
||||
.property_is_writeable = mp2629_charger_battery_prop_writeable,
|
||||
};
|
||||
|
||||
static ssize_t batt_impedance_compensation_show(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct mp2629_charger *charger = dev_get_drvdata(dev->parent);
|
||||
unsigned int rval;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(charger->regmap, MP2629_REG_IMPEDANCE_COMP, &rval);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
rval = (rval >> 4) * 10;
|
||||
return sprintf(buf, "%d mohm\n", rval);
|
||||
}
|
||||
|
||||
static ssize_t batt_impedance_compensation_store(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf,
|
||||
size_t count)
|
||||
{
|
||||
struct mp2629_charger *charger = dev_get_drvdata(dev->parent);
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
ret = kstrtouint(buf, 10, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (val > 140)
|
||||
return -ERANGE;
|
||||
|
||||
/* multiples of 10 mohm so round off */
|
||||
val = val / 10;
|
||||
ret = regmap_update_bits(charger->regmap, MP2629_REG_IMPEDANCE_COMP,
|
||||
MP2629_MASK_IMPEDANCE, val << 4);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR_RW(batt_impedance_compensation);
|
||||
|
||||
static struct attribute *mp2629_charger_sysfs_attrs[] = {
|
||||
&dev_attr_batt_impedance_compensation.attr,
|
||||
NULL
|
||||
};
|
||||
ATTRIBUTE_GROUPS(mp2629_charger_sysfs);
|
||||
|
||||
static void mp2629_charger_disable(void *data)
|
||||
{
|
||||
struct mp2629_charger *charger = data;
|
||||
|
||||
regmap_update_bits(charger->regmap, MP2629_REG_CHARGE_CTRL,
|
||||
MP2629_MASK_CHARGE_CTRL, 0);
|
||||
}
|
||||
|
||||
static int mp2629_charger_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct mp2629_data *ddata = dev_get_drvdata(dev->parent);
|
||||
struct mp2629_charger *charger;
|
||||
struct power_supply_config psy_cfg = {};
|
||||
int ret, i, irq;
|
||||
|
||||
charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL);
|
||||
if (!charger)
|
||||
return -ENOMEM;
|
||||
|
||||
charger->regmap = ddata->regmap;
|
||||
charger->dev = dev;
|
||||
platform_set_drvdata(pdev, charger);
|
||||
|
||||
irq = platform_get_irq_optional(to_platform_device(dev->parent), 0);
|
||||
if (irq < 0) {
|
||||
dev_err(dev, "get irq fail: %d\n", irq);
|
||||
return irq;
|
||||
}
|
||||
|
||||
for (i = 0; i < MP2629_MAX_FIELD; i++) {
|
||||
charger->regmap_fields[i] = devm_regmap_field_alloc(dev,
|
||||
charger->regmap, mp2629_reg_fields[i]);
|
||||
if (IS_ERR(charger->regmap_fields[i])) {
|
||||
dev_err(dev, "regmap field alloc fail %d\n", i);
|
||||
return PTR_ERR(charger->regmap_fields[i]);
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < MP2629_ADC_CHAN_END; i++) {
|
||||
charger->iiochan[i] = devm_iio_channel_get(dev,
|
||||
adc_chan_name[i]);
|
||||
if (IS_ERR(charger->iiochan[i])) {
|
||||
dev_err(dev, "iio chan get %s err\n", adc_chan_name[i]);
|
||||
return PTR_ERR(charger->iiochan[i]);
|
||||
}
|
||||
}
|
||||
|
||||
ret = devm_add_action_or_reset(dev, mp2629_charger_disable, charger);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
charger->usb = devm_power_supply_register(dev, &mp2629_usb_desc, NULL);
|
||||
if (IS_ERR(charger->usb)) {
|
||||
dev_err(dev, "power supply register usb failed\n");
|
||||
return PTR_ERR(charger->usb);
|
||||
}
|
||||
|
||||
psy_cfg.drv_data = charger;
|
||||
psy_cfg.attr_grp = mp2629_charger_sysfs_groups;
|
||||
charger->battery = devm_power_supply_register(dev,
|
||||
&mp2629_battery_desc, &psy_cfg);
|
||||
if (IS_ERR(charger->battery)) {
|
||||
dev_err(dev, "power supply register battery failed\n");
|
||||
return PTR_ERR(charger->battery);
|
||||
}
|
||||
|
||||
ret = regmap_update_bits(charger->regmap, MP2629_REG_CHARGE_CTRL,
|
||||
MP2629_MASK_CHARGE_CTRL, BIT(4));
|
||||
if (ret) {
|
||||
dev_err(dev, "enable charge fail: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
regmap_update_bits(charger->regmap, MP2629_REG_TIMER_CTRL,
|
||||
MP2629_MASK_WDOG_CTRL, 0);
|
||||
|
||||
mutex_init(&charger->lock);
|
||||
|
||||
ret = devm_request_threaded_irq(dev, irq, NULL, mp2629_irq_handler,
|
||||
IRQF_ONESHOT | IRQF_TRIGGER_RISING,
|
||||
"mp2629-charger", charger);
|
||||
if (ret) {
|
||||
dev_err(dev, "failed to request gpio IRQ\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
regmap_update_bits(charger->regmap, MP2629_REG_INTERRUPT,
|
||||
GENMASK(6, 5), BIT(6) | BIT(5));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id mp2629_charger_of_match[] = {
|
||||
{ .compatible = "mps,mp2629_charger"},
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, mp2629_charger_of_match);
|
||||
|
||||
static struct platform_driver mp2629_charger_driver = {
|
||||
.driver = {
|
||||
.name = "mp2629_charger",
|
||||
.of_match_table = mp2629_charger_of_match,
|
||||
},
|
||||
.probe = mp2629_charger_probe,
|
||||
};
|
||||
module_platform_driver(mp2629_charger_driver);
|
||||
|
||||
MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
|
||||
MODULE_DESCRIPTION("MP2629 Charger driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue