path: root/drivers/power/supply/rt9467-charger.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2022 Richtek Technology Corp.
 *
 * Author: ChiYuan Huang <cy_huang@richtek.com>
 *         ChiaEn Wu <chiaen_wu@richtek.com>
 */

#include <linux/bits.h>
#include <linux/bitfield.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/kstrtox.h>
#include <linux/linear_range.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/units.h>
#include <linux/sysfs.h>

#define RT9467_REG_CORE_CTRL0		0x00
#define RT9467_REG_CHG_CTRL1		0x01
#define RT9467_REG_CHG_CTRL2		0x02
#define RT9467_REG_CHG_CTRL3		0x03
#define RT9467_REG_CHG_CTRL4		0x04
#define RT9467_REG_CHG_CTRL5		0x05
#define RT9467_REG_CHG_CTRL6		0x06
#define RT9467_REG_CHG_CTRL7		0x07
#define RT9467_REG_CHG_CTRL8		0x08
#define RT9467_REG_CHG_CTRL9		0x09
#define RT9467_REG_CHG_CTRL10		0x0A
#define RT9467_REG_CHG_CTRL12		0x0C
#define RT9467_REG_CHG_CTRL13		0x0D
#define RT9467_REG_CHG_CTRL14		0x0E
#define RT9467_REG_CHG_ADC		0x11
#define RT9467_REG_CHG_DPDM1		0x12
#define RT9467_REG_CHG_DPDM2		0x13
#define RT9467_REG_DEVICE_ID		0x40
#define RT9467_REG_CHG_STAT		0x42
#define RT9467_REG_ADC_DATA_H		0x44
#define RT9467_REG_CHG_STATC		0x50
#define RT9467_REG_CHG_IRQ1		0x53
#define RT9467_REG_CHG_STATC_CTRL	0x60
#define RT9467_REG_CHG_IRQ1_CTRL	0x63

#define RT9467_MASK_PWR_RDY		BIT(7)
#define RT9467_MASK_MIVR_STAT		BIT(6)
#define RT9467_MASK_OTG_CSEL		GENMASK(2, 0)
#define RT9467_MASK_OTG_VSEL		GENMASK(7, 2)
#define RT9467_MASK_OTG_EN		BIT(0)
#define RT9467_MASK_ADC_IN_SEL		GENMASK(7, 4)
#define RT9467_MASK_ADC_START		BIT(0)

#define RT9467_NUM_IRQ_REGS		4
#define RT9467_ICHG_MIN_uA		100000
#define RT9467_ICHG_MAX_uA		5000000
#define RT9467_CV_MAX_uV		4710000
#define RT9467_OTG_MIN_uV		4425000
#define RT9467_OTG_MAX_uV		5825000
#define RT9467_OTG_STEP_uV		25000
#define RT9467_NUM_VOTG			(RT9467_OTG_MAX_uV - RT9467_OTG_MIN_uV + 1)
#define RT9467_AICLVTH_GAP_uV		200000
#define RT9467_ADCCONV_TIME_MS		35

#define RT9466_VID			0x8
#define RT9467_VID			0x9

/* IRQ number */
#define RT9467_IRQ_TS_STATC	0
#define RT9467_IRQ_CHG_FAULT	1
#define RT9467_IRQ_CHG_STATC	2
#define RT9467_IRQ_CHG_TMR	3
#define RT9467_IRQ_CHG_BATABS	4
#define RT9467_IRQ_CHG_ADPBAD	5
#define RT9467_IRQ_CHG_RVP	6
#define RT9467_IRQ_OTP		7

#define RT9467_IRQ_CHG_AICLM	8
#define RT9467_IRQ_CHG_ICHGM	9
#define RT9467_IRQ_WDTMR	11
#define RT9467_IRQ_SSFINISH	12
#define RT9467_IRQ_CHG_RECHG	13
#define RT9467_IRQ_CHG_TERM	14
#define RT9467_IRQ_CHG_IEOC	15

#define RT9467_IRQ_ADC_DONE	16
#define RT9467_IRQ_PUMPX_DONE	17
#define RT9467_IRQ_BST_BATUV	21
#define RT9467_IRQ_BST_MIDOV	22
#define RT9467_IRQ_BST_OLP	23

#define RT9467_IRQ_ATTACH	24
#define RT9467_IRQ_DETACH	25
#define RT9467_IRQ_HVDCP_DET	29
#define RT9467_IRQ_CHGDET	30
#define RT9467_IRQ_DCDT		31

enum rt9467_fields {
	/* RT9467_REG_CORE_CTRL0 */
	F_RST = 0,
	/* RT9467_REG_CHG_CTRL1 */
	F_HZ, F_OTG_PIN_EN, F_OPA_MODE,
	/* RT9467_REG_CHG_CTRL2 */
	F_SHIP_MODE, F_TE, F_IINLMTSEL, F_CFO_EN, F_CHG_EN,
	/* RT9467_REG_CHG_CTRL3 */
	F_IAICR, F_ILIM_EN,
	/* RT9467_REG_CHG_CTRL4 */
	F_VOREG,
	/* RT9467_REG_CHG_CTRL6 */
	F_VMIVR,
	/* RT9467_REG_CHG_CTRL7 */
	F_ICHG,
	/* RT9467_REG_CHG_CTRL8 */
	F_IPREC,
	/* RT9467_REG_CHG_CTRL9 */
	F_IEOC,
	/* RT9467_REG_CHG_CTRL12 */
	F_WT_FC,
	/* RT9467_REG_CHG_CTRL13 */
	F_OCP,
	/* RT9467_REG_CHG_CTRL14 */
	F_AICL_MEAS, F_AICL_VTH,
	/* RT9467_REG_CHG_DPDM1 */
	F_USBCHGEN,
	/* RT9467_REG_CHG_DPDM2 */
	F_USB_STATUS,
	/* RT9467_REG_DEVICE_ID */
	F_VENDOR,
	/* RT9467_REG_CHG_STAT */
	F_CHG_STAT,
	/* RT9467_REG_CHG_STATC */
	F_PWR_RDY, F_CHG_MIVR,
	F_MAX_FIELDS
};

static const struct regmap_irq rt9467_irqs[] = {
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_TS_STATC, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_FAULT, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_STATC, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_TMR, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_BATABS, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_ADPBAD, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_RVP, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_OTP, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_AICLM, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_ICHGM, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_WDTMR, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_SSFINISH, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_RECHG, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_TERM, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_IEOC, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_ADC_DONE, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_PUMPX_DONE, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_BATUV, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_MIDOV, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_OLP, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_ATTACH, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_DETACH, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_HVDCP_DET, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHGDET, 8),
	REGMAP_IRQ_REG_LINE(RT9467_IRQ_DCDT, 8)
};

static const struct regmap_irq_chip rt9467_irq_chip = {
	.name = "rt9467-irqs",
	.status_base = RT9467_REG_CHG_IRQ1,
	.mask_base = RT9467_REG_CHG_IRQ1_CTRL,
	.num_regs = RT9467_NUM_IRQ_REGS,
	.irqs = rt9467_irqs,
	.num_irqs = ARRAY_SIZE(rt9467_irqs),
};

enum rt9467_ranges {
	RT9467_RANGE_IAICR = 0,
	RT9467_RANGE_VOREG,
	RT9467_RANGE_VMIVR,
	RT9467_RANGE_ICHG,
	RT9467_RANGE_IPREC,
	RT9467_RANGE_IEOC,
	RT9467_RANGE_AICL_VTH,
	RT9467_RANGES_MAX
};

static const struct linear_range rt9467_ranges[RT9467_RANGES_MAX] = {
	LINEAR_RANGE_IDX(RT9467_RANGE_IAICR, 100000, 0x0, 0x3F, 50000),
	LINEAR_RANGE_IDX(RT9467_RANGE_VOREG, 3900000, 0x0, 0x51, 10000),
	LINEAR_RANGE_IDX(RT9467_RANGE_VMIVR, 3900000, 0x0, 0x5F, 100000),
	LINEAR_RANGE_IDX(RT9467_RANGE_ICHG, 900000, 0x08, 0x31, 100000),
	LINEAR_RANGE_IDX(RT9467_RANGE_IPREC, 100000, 0x0, 0x0F, 50000),
	LINEAR_RANGE_IDX(RT9467_RANGE_IEOC, 100000, 0x0, 0x0F, 50000),
	LINEAR_RANGE_IDX(RT9467_RANGE_AICL_VTH, 4100000, 0x0, 0x7, 100000),
};

static const struct reg_field rt9467_chg_fields[] = {
	[F_RST]			= REG_FIELD(RT9467_REG_CORE_CTRL0, 7, 7),
	[F_HZ]			= REG_FIELD(RT9467_REG_CHG_CTRL1, 2, 2),
	[F_OTG_PIN_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL1, 1, 1),
	[F_OPA_MODE]		= REG_FIELD(RT9467_REG_CHG_CTRL1, 0, 0),
	[F_SHIP_MODE]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 7, 7),
	[F_TE]			= REG_FIELD(RT9467_REG_CHG_CTRL2, 4, 4),
	[F_IINLMTSEL]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 2, 3),
	[F_CFO_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 1, 1),
	[F_CHG_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 0, 0),
	[F_IAICR]		= REG_FIELD(RT9467_REG_CHG_CTRL3, 2, 7),
	[F_ILIM_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL3, 0, 0),
	[F_VOREG]		= REG_FIELD(RT9467_REG_CHG_CTRL4, 1, 7),
	[F_VMIVR]		= REG_FIELD(RT9467_REG_CHG_CTRL6, 1, 7),
	[F_ICHG]		= REG_FIELD(RT9467_REG_CHG_CTRL7, 2, 7),
	[F_IPREC]		= REG_FIELD(RT9467_REG_CHG_CTRL8, 0, 3),
	[F_IEOC]		= REG_FIELD(RT9467_REG_CHG_CTRL9, 4, 7),
	[F_WT_FC]		= REG_FIELD(RT9467_REG_CHG_CTRL12, 5, 7),
	[F_OCP]			= REG_FIELD(RT9467_REG_CHG_CTRL13, 2, 2),
	[F_AICL_MEAS]		= REG_FIELD(RT9467_REG_CHG_CTRL14, 7, 7),
	[F_AICL_VTH]		= REG_FIELD(RT9467_REG_CHG_CTRL14, 0, 2),
	[F_USBCHGEN]		= REG_FIELD(RT9467_REG_CHG_DPDM1, 7, 7),
	[F_USB_STATUS]		= REG_FIELD(RT9467_REG_CHG_DPDM2, 0, 2),
	[F_VENDOR]		= REG_FIELD(RT9467_REG_DEVICE_ID, 4, 7),
	[F_CHG_STAT]		= REG_FIELD(RT9467_REG_CHG_STAT, 6, 7),
	[F_PWR_RDY]		= REG_FIELD(RT9467_REG_CHG_STATC, 7, 7),
	[F_CHG_MIVR]		= REG_FIELD(RT9467_REG_CHG_STATC, 6, 6),
};

enum {
	RT9467_STAT_READY = 0,
	RT9467_STAT_PROGRESS,
	RT9467_STAT_CHARGE_DONE,
	RT9467_STAT_FAULT
};

enum rt9467_adc_chan {
	RT9467_ADC_VBUS_DIV5 = 0,
	RT9467_ADC_VBUS_DIV2,
	RT9467_ADC_VSYS,
	RT9467_ADC_VBAT,
	RT9467_ADC_TS_BAT,
	RT9467_ADC_IBUS,
	RT9467_ADC_IBAT,
	RT9467_ADC_REGN,
	RT9467_ADC_TEMP_JC
};

enum rt9467_chg_type {
	RT9467_CHG_TYPE_NOVBUS = 0,
	RT9467_CHG_TYPE_UNDER_GOING,
	RT9467_CHG_TYPE_SDP,
	RT9467_CHG_TYPE_SDPNSTD,
	RT9467_CHG_TYPE_DCP,
	RT9467_CHG_TYPE_CDP,
	RT9467_CHG_TYPE_MAX
};

enum rt9467_iin_limit_sel {
	RT9467_IINLMTSEL_3_2A = 0,
	RT9467_IINLMTSEL_CHG_TYP,
	RT9467_IINLMTSEL_AICR,
	RT9467_IINLMTSEL_LOWER_LEVEL, /* lower of above three */
};

struct rt9467_chg_data {
	struct device *dev;
	struct regmap *regmap;
	struct regmap_field *rm_field[F_MAX_FIELDS];
	struct regmap_irq_chip_data *irq_chip_data;
	struct power_supply *psy;
	struct mutex adc_lock;
	struct mutex attach_lock;
	struct mutex ichg_ieoc_lock;
	struct regulator_dev *rdev;
	struct completion aicl_done;
	enum power_supply_usb_type psy_usb_type;
	unsigned int old_stat;
	unsigned int vid;
	int ichg_ua;
	int ieoc_ua;
};

static int rt9467_otg_of_parse_cb(struct device_node *of,
				  const struct regulator_desc *desc,
				  struct regulator_config *cfg)
{
	struct rt9467_chg_data *data = cfg->driver_data;

	cfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of),
						"enable", 0, GPIOD_OUT_LOW |
						GPIOD_FLAGS_BIT_NONEXCLUSIVE,
						desc->name);
	if (IS_ERR(cfg->ena_gpiod)) {
		cfg->ena_gpiod = NULL;
		return 0;
	}

	return regmap_field_write(data->rm_field[F_OTG_PIN_EN], 1);
}

static const struct regulator_ops rt9467_otg_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_linear,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_current_limit = regulator_set_current_limit_regmap,
	.get_current_limit = regulator_get_current_limit_regmap,
};

static const u32 rt9467_otg_microamp[] = {
	500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, 3000000
};

static const struct regulator_desc rt9467_otg_desc = {
	.name = "rt9476-usb-otg-vbus",
	.of_match = "usb-otg-vbus-regulator",
	.of_parse_cb = rt9467_otg_of_parse_cb,
	.type = REGULATOR_VOLTAGE,
	.owner = THIS_MODULE,
	.min_uV = RT9467_OTG_MIN_uV,
	.uV_step = RT9467_OTG_STEP_uV,
	.n_voltages = RT9467_NUM_VOTG,
	.curr_table = rt9467_otg_microamp,
	.n_current_limits = ARRAY_SIZE(rt9467_otg_microamp),
	.csel_reg = RT9467_REG_CHG_CTRL10,
	.csel_mask = RT9467_MASK_OTG_CSEL,
	.vsel_reg = RT9467_REG_CHG_CTRL5,
	.vsel_mask = RT9467_MASK_OTG_VSEL,
	.enable_reg = RT9467_REG_CHG_CTRL1,
	.enable_mask = RT9467_MASK_OTG_EN,
	.ops = &rt9467_otg_regulator_ops,
};

static int rt9467_register_otg_regulator(struct rt9467_chg_data *data)
{
	struct regulator_config cfg = {
		.dev = data->dev,
		.regmap = data->regmap,
		.driver_data = data,
	};

	data->rdev = devm_regulator_register(data->dev, &rt9467_otg_desc, &cfg);
	return PTR_ERR_OR_ZERO(data->rdev);
}

static int rt9467_get_value_from_ranges(struct rt9467_chg_data *data,
					enum rt9467_fields field,
					enum rt9467_ranges rsel,
					int *value)
{
	const struct linear_range *range = rt9467_ranges + rsel;
	unsigned int sel;
	int ret;

	ret = regmap_field_read(data->rm_field[field], &sel);
	if (ret)
		return ret;

	return linear_range_get_value(range, sel, value);
}

static int rt9467_set_value_from_ranges(struct rt9467_chg_data *data,
					enum rt9467_fields field,
					enum rt9467_ranges rsel,
					int value)
{
	const struct linear_range *range = rt9467_ranges + rsel;
	unsigned int sel;
	bool found;
	int ret;

	if (rsel == RT9467_RANGE_VMIVR) {
		ret = linear_range_get_selector_high(range, value, &sel, &found);
		if (ret)
			value = range->max_sel;
	} else {
		linear_range_get_selector_within(range, value, &sel);
	}

	return regmap_field_write(data->rm_field[field], sel);
}

static int rt9467_get_adc_sel(enum rt9467_adc_chan chan, int *sel)
{
	switch (chan) {
	case RT9467_ADC_VBUS_DIV5:
	case RT9467_ADC_VBUS_DIV2:
	case RT9467_ADC_VSYS:
	case RT9467_ADC_VBAT:
		*sel = chan + 1;
		return 0;
	case RT9467_ADC_TS_BAT:
		*sel = chan + 2;
		return 0;
	case RT9467_ADC_IBUS:
	case RT9467_ADC_IBAT:
		*sel = chan + 3;
		return 0;
	case RT9467_ADC_REGN:
	case RT9467_ADC_TEMP_JC:
		*sel = chan + 4;
		return 0;
	default:
		return -EINVAL;
	}
}

static int rt9467_get_adc_raw_data(struct rt9467_chg_data *data,
				   enum rt9467_adc_chan chan, int *val)
{
	unsigned int adc_stat, reg_val, adc_sel;
	__be16 chan_raw_data;
	int ret;

	mutex_lock(&data->adc_lock);

	ret = rt9467_get_adc_sel(chan, &adc_sel);
	if (ret)
		goto adc_unlock;

	ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, 0);
	if (ret) {
		dev_err(data->dev, "Failed to clear ADC enable\n");
		goto adc_unlock;
	}

	reg_val = RT9467_MASK_ADC_START | FIELD_PREP(RT9467_MASK_ADC_IN_SEL, adc_sel);
	ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, reg_val);
	if (ret)
		goto adc_unlock;

	/* Minimum wait time for one channel processing */
	msleep(RT9467_ADCCONV_TIME_MS);

	ret = regmap_read_poll_timeout(data->regmap, RT9467_REG_CHG_ADC,
				       adc_stat,
				       !(adc_stat & RT9467_MASK_ADC_START),
				       MILLI, RT9467_ADCCONV_TIME_MS * MILLI);
	if (ret) {
		dev_err(data->dev, "Failed to wait ADC conversion, chan = %d\n", chan);
		goto adc_unlock;
	}

	ret = regmap_raw_read(data->regmap, RT9467_REG_ADC_DATA_H,
			      &chan_raw_data, sizeof(chan_raw_data));
	if (ret)
		goto adc_unlock;

	*val = be16_to_cpu(chan_raw_data);

adc_unlock:
	mutex_unlock(&data->adc_lock);
	return ret;
}

static int rt9467_get_adc(struct rt9467_chg_data *data,
			  enum rt9467_adc_chan chan, int *val)
{
	unsigned int aicr_ua, ichg_ua;
	int ret;

	ret = rt9467_get_adc_raw_data(data, chan, val);
	if (ret)
		return ret;

	switch (chan) {
	case RT9467_ADC_VBUS_DIV5:
		*val *= 25000;
		return 0;
	case RT9467_ADC_VBUS_DIV2:
		*val *= 10000;
		return 0;
	case RT9467_ADC_VBAT:
	case RT9467_ADC_VSYS:
	case RT9467_ADC_REGN:
		*val *= 5000;
		return 0;
	case RT9467_ADC_TS_BAT:
		*val /= 400;
		return 0;
	case RT9467_ADC_IBUS:
		/* UUG MOS turn-on ratio will affect the IBUS adc scale */
		ret = rt9467_get_value_from_ranges(data, F_IAICR,
						   RT9467_RANGE_IAICR, &aicr_ua);
		if (ret)
			return ret;

		*val *= aicr_ua < 400000 ? 29480 : 50000;
		return 0;
	case RT9467_ADC_IBAT:
		/* PP MOS turn-on ratio will affect the ICHG adc scale */
		ret = rt9467_get_value_from_ranges(data, F_ICHG,
						   RT9467_RANGE_ICHG, &ichg_ua);
		if (ret)
			return ret;

		*val *= ichg_ua <= 400000 ? 28500 :
			ichg_ua <= 800000 ? 31500 : 500000;
		return 0;
	case RT9467_ADC_TEMP_JC:
		*val = ((*val * 2) - 40) * 10;
		return 0;
	default:
		return -EINVAL;
	}
}

static int rt9467_psy_get_status(struct rt9467_chg_data *data, int *state)
{
	unsigned int status;
	int ret;

	ret = regmap_field_read(data->rm_field[F_CHG_STAT], &status);
	if (ret)
		return ret;

	switch (status) {
	case RT9467_STAT_READY:
		*state = POWER_SUPPLY_STATUS_NOT_CHARGING;
		return 0;
	case RT9467_STAT_PROGRESS:
		*state = POWER_SUPPLY_STATUS_CHARGING;
		return 0;
	case RT9467_STAT_CHARGE_DONE:
		*state = POWER_SUPPLY_STATUS_FULL;
		return 0;
	default:
		*state = POWER_SUPPLY_STATUS_UNKNOWN;
		return 0;
	}
}

static int rt9467_psy_set_ichg(struct rt9467_chg_data *data, int microamp)
{
	int ret;

	mutex_lock(&data->ichg_ieoc_lock);

	if (microamp < 500000) {
		dev_err(data->dev, "Minimum value must be 500mA\n");
		microamp = 500000;
	}

	ret = rt9467_set_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG, microamp);
	if (ret)
		goto out;

	ret = rt9467_get_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG,
					   &data->ichg_ua);
	if (ret)
		goto out;

out:
	mutex_unlock(&data->ichg_ieoc_lock);
	return ret;
}

static int rt9467_run_aicl(struct rt9467_chg_data *data)
{
	unsigned int statc, aicl_vth;
	int mivr_vth, aicr_get;
	int ret = 0;


	ret = regmap_read(data->regmap, RT9467_REG_CHG_STATC, &statc);
	if (ret) {
		dev_err(data->dev, "Failed to read status\n");
		return ret;
	}

	if (!(statc & RT9467_MASK_PWR_RDY) || !(statc & RT9467_MASK_MIVR_STAT)) {
		dev_info(data->dev, "Condition not matched %d\n", statc);
		return 0;
	}

	ret = rt9467_get_value_from_ranges(data, F_VMIVR, RT9467_RANGE_VMIVR,
					   &mivr_vth);
	if (ret) {
		dev_err(data->dev, "Failed to get mivr\n");
		return ret;
	}

	/* AICL_VTH = MIVR_VTH + 200mV */
	aicl_vth = mivr_vth + RT9467_AICLVTH_GAP_uV;
	ret = rt9467_set_value_from_ranges(data, F_AICL_VTH,
					   RT9467_RANGE_AICL_VTH, aicl_vth);

	/* Trigger AICL function */
	ret = regmap_field_write(data->rm_field[F_AICL_MEAS], 1);
	if (ret) {
		dev_err(data->dev, "Failed to set aicl measurement\n");
		return ret;
	}

	reinit_completion(&data->aicl_done);
	ret = wait_for_completion_timeout(&data->aicl_done, msecs_to_jiffies(3500));
	if (ret)
		return ret;

	ret = rt9467_get_value_from_ranges(data, F_IAICR, RT9467_RANGE_IAICR, &aicr_get);
	if (ret) {
		dev_err(data->dev, "Failed to get aicr\n");
		return ret;
	}

	dev_info(data->dev, "aicr get = %d uA\n", aicr_get);
	return 0;
}

static int rt9467_psy_set_ieoc(struct rt9467_chg_data *data, int microamp)
{
	int ret;

	mutex_lock(&data->ichg_ieoc_lock);

	ret = rt9467_set_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC, microamp);
	if (ret)
		goto out;

	ret = rt9467_get_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC, &data->ieoc_ua);
	if (ret)
		goto out;

out:
	mutex_unlock(&data->ichg_ieoc_lock);
	return ret;
}

static const enum power_supply_usb_type rt9467_chg_usb_types[] = {
	POWER_SUPPLY_USB_TYPE_UNKNOWN,
	POWER_SUPPLY_USB_TYPE_SDP,
	POWER_SUPPLY_USB_TYPE_DCP,
	POWER_SUPPLY_USB_TYPE_CDP,
};

static const enum power_supply_property rt9467_chg_properties[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_CURRENT_MAX,
	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
	POWER_SUPPLY_PROP_USB_TYPE,
	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
};

static int rt9467_psy_get_property(struct power_supply *psy,
				   enum power_supply_property psp,
				   union power_supply_propval *val)
{
	struct rt9467_chg_data *data = power_supply_get_drvdata(psy);

	switch (psp) {
	case POWER_SUPPLY_PROP_STATUS:
		return rt9467_psy_get_status(data, &val->intval);
	case POWER_SUPPLY_PROP_ONLINE:
		return regmap_field_read(data->rm_field[F_PWR_RDY], &val->intval);
	case POWER_SUPPLY_PROP_CURRENT_MAX:
		mutex_lock(&data->attach_lock);
		if (data->psy_usb_type == POWER_SUPPLY_USB_TYPE_UNKNOWN ||
		    data->psy_usb_type == POWER_SUPPLY_USB_TYPE_SDP)
			val->intval = 500000;
		else
			val->intval = 1500000;
		mutex_unlock(&data->attach_lock);
		return 0;
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
		mutex_lock(&data->ichg_ieoc_lock);
		val->intval = data->ichg_ua;
		mutex_unlock(&data->ichg_ieoc_lock);
		return 0;
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
		val->intval = RT9467_ICHG_MAX_uA;
		return 0;
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
		return rt9467_get_value_from_ranges(data, F_VOREG,
						    RT9467_RANGE_VOREG,
						    &val->intval);
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
		val->intval = RT9467_CV_MAX_uV;
		return 0;
	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
		return rt9467_get_value_from_ranges(data, F_IAICR,
						    RT9467_RANGE_IAICR,
						    &val->intval);
	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
		return rt9467_get_value_from_ranges(data, F_VMIVR,
						    RT9467_RANGE_VMIVR,
						    &val->intval);
	case POWER_SUPPLY_PROP_USB_TYPE:
		mutex_lock(&data->attach_lock);
		val->intval = data->psy_usb_type;
		mutex_unlock(&data->attach_lock);
		return 0;
	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
		return rt9467_get_value_from_ranges(data, F_IPREC,
						    RT9467_RANGE_IPREC,
						    &val->intval);
	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
		mutex_lock(&data->ichg_ieoc_lock);
		val->intval = data->ieoc_ua;
		mutex_unlock(&data->ichg_ieoc_lock);
		return 0;
	default:
		return -ENODATA;
	}
}

static int rt9467_psy_set_property(struct power_supply *psy,
				   enum power_supply_property psp,
				   const union power_supply_propval *val)
{
	struct rt9467_chg_data *data = power_supply_get_drvdata(psy);

	switch (psp) {
	case POWER_SUPPLY_PROP_STATUS:
		return regmap_field_write(data->rm_field[F_CHG_EN], val->intval);
	case POWER_SUPPLY_PROP_ONLINE:
		return regmap_field_write(data->rm_field[F_HZ], val->intval);
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
		return rt9467_psy_set_ichg(data, val->intval);
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
		return rt9467_set_value_from_ranges(data, F_VOREG,
						    RT9467_RANGE_VOREG, val->intval);
	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
		if (val->intval == -1)
			return rt9467_run_aicl(data);
		else
			return rt9467_set_value_from_ranges(data, F_IAICR,
							    RT9467_RANGE_IAICR,
							    val->intval);
	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
		return rt9467_set_value_from_ranges(data, F_VMIVR,
						    RT9467_RANGE_VMIVR, val->intval);
	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
		return rt9467_set_value_from_ranges(data, F_IPREC,
						    RT9467_RANGE_IPREC, val->intval);
	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
		return rt9467_psy_set_ieoc(data, val->intval);
	case POWER_SUPPLY_PROP_USB_TYPE:
		return regmap_field_write(data->rm_field[F_USBCHGEN], val->intval);
	default:
		return -EINVAL;
	}
}

static int rt9467_chg_prop_is_writeable(struct power_supply *psy,
					enum power_supply_property psp)
{
	switch (psp) {
	case POWER_SUPPLY_PROP_STATUS:
	case POWER_SUPPLY_PROP_ONLINE:
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
	case POWER_SUPPLY_PROP_USB_TYPE:
		return 1;
	default:
		return 0;
	}
}

static const struct power_supply_desc rt9467_chg_psy_desc = {
	.name = "rt9467-charger",
	.type = POWER_SUPPLY_TYPE_USB,
	.usb_types = rt9467_chg_usb_types,
	.num_usb_types = ARRAY_SIZE(rt9467_chg_usb_types),
	.properties = rt9467_chg_properties,
	.num_properties = ARRAY_SIZE(rt9467_chg_properties),
	.property_is_writeable = rt9467_chg_prop_is_writeable,
	.get_property = rt9467_psy_get_property,
	.set_property = rt9467_psy_set_property,
};

static inline struct rt9467_chg_data *psy_device_to_chip(struct device *dev)
{
	return power_supply_get_drvdata(to_power_supply(dev));
}

static ssize_t sysoff_enable_show(struct device *dev,
				  struct device_attribute *attr, char *buf)
{
	struct rt9467_chg_data *data = psy_device_to_chip(dev);
	unsigned int sysoff_enable;
	int ret;

	ret = regmap_field_read(data->rm_field[F_SHIP_MODE], &sysoff_enable);
	if (ret)
		return ret;

	return sysfs_emit(buf, "%d\n", sysoff_enable);
}

static ssize_t sysoff_enable_store(struct device *dev,
				   struct device_attribute *attr,
				   const char *buf, size_t count)
{
	struct rt9467_chg_data *data = psy_device_to_chip(dev);
	unsigned int tmp;
	int ret;

	ret = kstrtouint(buf, 10, &tmp);
	if (ret)
		return ret;

	ret = regmap_field_write(data->rm_field[F_SHIP_MODE], !!tmp);
	if (ret)
		return ret;

	return count;
}

static DEVICE_ATTR_RW(sysoff_enable);

static struct attribute *rt9467_sysfs_attrs[] = {
	&dev_attr_sysoff_enable.attr,
	NULL
};

ATTRIBUTE_GROUPS(rt9467_sysfs);

static int rt9467_register_psy(struct rt9467_chg_data *data)
{
	struct power_supply_config cfg = {
		.drv_data = data,
		.of_node = dev_of_node(data->dev),
		.attr_grp = rt9467_sysfs_groups,
	};

	data->psy = devm_power_supply_register(data->dev, &rt9467_chg_psy_desc,
					       &cfg);
	return PTR_ERR_OR_ZERO(data->psy);
}

static int rt9467_mivr_handler(struct rt9467_chg_data *data)
{
	unsigned int mivr_act;
	int ret, ibus_ma;

	/*
	 * back-boost workaround
	 * If (mivr_active & ibus < 100mA), toggle cfo bit
	 */
	ret = regmap_field_read(data->rm_field[F_CHG_MIVR], &mivr_act);
	if (ret) {
		dev_err(data->dev, "Failed to read MIVR stat\n");
		return ret;
	}

	if (!mivr_act)
		return 0;

	ret = rt9467_get_adc(data, RT9467_ADC_IBUS, &ibus_ma);
	if (ret) {
		dev_err(data->dev, "Failed to get IBUS\n");
		return ret;
	}

	if (ibus_ma < 100000) {
		ret = regmap_field_write(data->rm_field[F_CFO_EN], 0);
		ret |= regmap_field_write(data->rm_field[F_CFO_EN], 1);
		if (ret)
			dev_err(data->dev, "Failed to toggle cfo\n");
	}

	return ret;
}

static irqreturn_t rt9467_statc_handler(int irq, void *priv)
{
	struct rt9467_chg_data *data = priv;
	unsigned int new_stat, evts = 0;
	int ret;

	ret = regmap_read(data->regmap, RT9467_REG_CHG_STATC, &new_stat);
	if (ret) {
		dev_err(data->dev, "Failed to read chg_statc\n");
		return IRQ_NONE;
	}

	evts = data->old_stat ^ new_stat;
	data->old_stat = new_stat;

	if ((evts & new_stat) & RT9467_MASK_MIVR_STAT) {
		ret = rt9467_mivr_handler(data);
		if (ret)
			dev_err(data->dev, "Failed to handle mivr stat\n");
	}

	return IRQ_HANDLED;
}

static irqreturn_t rt9467_wdt_handler(int irq, void *priv)
{
	struct rt9467_chg_data *data = priv;
	unsigned int dev_id;
	int ret;

	/* Any i2c communication can kick watchdog timer */
	ret = regmap_read(data->regmap, RT9467_REG_DEVICE_ID, &dev_id);
	if (ret) {
		dev_err(data->dev, "Failed to kick wdt (%d)\n", ret);
		return IRQ_NONE;
	}

	return IRQ_HANDLED;
}

static int rt9467_report_usb_state(struct rt9467_chg_data *data)
{
	unsigned int usb_stat, power_ready;
	bool psy_changed = true;
	int ret;

	ret = regmap_field_read(data->rm_field[F_USB_STATUS], &usb_stat);
	ret |= regmap_field_read(data->rm_field[F_PWR_RDY], &power_ready);
	if (ret)
		return ret;

	if (!power_ready)
		usb_stat = RT9467_CHG_TYPE_NOVBUS;

	mutex_lock(&data->attach_lock);

	switch (usb_stat) {
	case RT9467_CHG_TYPE_NOVBUS:
		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
		break;
	case RT9467_CHG_TYPE_SDP:
		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
		break;
	case RT9467_CHG_TYPE_SDPNSTD:
		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
		break;
	case RT9467_CHG_TYPE_DCP:
		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
		break;
	case RT9467_CHG_TYPE_CDP:
		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
		break;
	case RT9467_CHG_TYPE_UNDER_GOING:
	default:
		psy_changed = false;
		break;
	}

	mutex_unlock(&data->attach_lock);

	if (psy_changed)
		power_supply_changed(data->psy);

	return 0;
}

static irqreturn_t rt9467_usb_state_handler(int irq, void *priv)
{
	struct rt9467_chg_data *data = priv;
	int ret;

	ret = rt9467_report_usb_state(data);
	if (ret) {
		dev_err(data->dev, "Failed to report attach type (%d)\n", ret);
		return IRQ_NONE;
	}

	return IRQ_HANDLED;
}

static irqreturn_t rt9467_aiclmeas_handler(int irq, void *priv)
{
	struct rt9467_chg_data *data = priv;

	complete(&data->aicl_done);
	return IRQ_HANDLED;
}

#define RT9467_IRQ_DESC(_name, _handler_func, _hwirq)		\
{								\
	.name = #_name,						\
	.handler = rt9467_##_handler_func##_handler,		\
	.hwirq = _hwirq,					\
}

static int rt9467_request_interrupt(struct rt9467_chg_data *data)
{
	struct device *dev = data->dev;
	static const struct {
		const char *name;
		int hwirq;
		irq_handler_t handler;
	} rt9467_exclusive_irqs[] = {
		RT9467_IRQ_DESC(statc, statc, RT9467_IRQ_TS_STATC),
		RT9467_IRQ_DESC(wdt, wdt, RT9467_IRQ_WDTMR),
		RT9467_IRQ_DESC(attach, usb_state, RT9467_IRQ_ATTACH),
		RT9467_IRQ_DESC(detach,	usb_state, RT9467_IRQ_DETACH),
		RT9467_IRQ_DESC(aiclmeas, aiclmeas, RT9467_IRQ_CHG_AICLM),
	}, rt9466_exclusive_irqs[] = {
		RT9467_IRQ_DESC(statc, statc, RT9467_IRQ_TS_STATC),
		RT9467_IRQ_DESC(wdt, wdt, RT9467_IRQ_WDTMR),
		RT9467_IRQ_DESC(aiclmeas, aiclmeas, RT9467_IRQ_CHG_AICLM),
	}, *chg_irqs;
	int num_chg_irqs, i, virq, ret;

	if (data->vid == RT9466_VID) {
		chg_irqs = rt9466_exclusive_irqs;
		num_chg_irqs = ARRAY_SIZE(rt9466_exclusive_irqs);
	} else {
		chg_irqs = rt9467_exclusive_irqs;
		num_chg_irqs = ARRAY_SIZE(rt9467_exclusive_irqs);
	}

	for (i = 0; i < num_chg_irqs; i++) {
		virq = regmap_irq_get_virq(data->irq_chip_data, chg_irqs[i].hwirq);
		if (virq <= 0)
			return dev_err_probe(dev, -EINVAL, "Failed to get (%s) irq\n",
					     chg_irqs[i].name);

		ret = devm_request_threaded_irq(dev, virq, NULL, chg_irqs[i].handler,
						IRQF_ONESHOT, chg_irqs[i].name, data);
		if (ret)
			return dev_err_probe(dev, ret, "Failed to request (%s) irq\n",
					     chg_irqs[i].name);
	}

	return 0;
}

static int rt9467_do_charger_init(struct rt9467_chg_data *data)
{
	struct device *dev = data->dev;
	int ret;

	ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, 0);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to reset ADC\n");

	ret = rt9467_get_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG,
					   &data->ichg_ua);
	ret |= rt9467_get_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC,
					    &data->ieoc_ua);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to init ichg/ieoc value\n");

	ret = regmap_update_bits(data->regmap, RT9467_REG_CHG_STATC_CTRL,
				 RT9467_MASK_PWR_RDY | RT9467_MASK_MIVR_STAT, 0);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to make statc unmask\n");

	/* Select IINLMTSEL to use AICR */
	ret = regmap_field_write(data->rm_field[F_IINLMTSEL],
				 RT9467_IINLMTSEL_AICR);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to set iinlmtsel to AICR\n");

	/* Wait for AICR Rampping */
	msleep(150);

	/* Disable hardware ILIM */
	ret = regmap_field_write(data->rm_field[F_ILIM_EN], 0);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to disable hardware ILIM\n");

	/* Set inductor OCP to high level */
	ret = regmap_field_write(data->rm_field[F_OCP], 1);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to set higher inductor OCP level\n");

	/* Set charge termination default enable */
	ret = regmap_field_write(data->rm_field[F_TE], 1);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to set TE=1\n");

	/* Set 12hrs fast charger timer */
	ret = regmap_field_write(data->rm_field[F_WT_FC], 4);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to set WT_FC\n");

	/* Toggle BC12 function */
	ret = regmap_field_write(data->rm_field[F_USBCHGEN], 0);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to disable BC12\n");

	return regmap_field_write(data->rm_field[F_USBCHGEN], 1);
}

static bool rt9467_is_accessible_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case 0x00 ... 0x1A:
	case 0x20 ... 0x38:
	case 0x40 ... 0x49:
	case 0x50 ... 0x57:
	case 0x60 ... 0x67:
	case 0x70 ... 0x79:
	case 0x82 ... 0x85:
		return true;
	default:
		return false;
	}
}

static const struct regmap_config rt9467_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = 0x85,
	.writeable_reg = rt9467_is_accessible_reg,
	.readable_reg = rt9467_is_accessible_reg,
};

static int rt9467_check_vendor_info(struct rt9467_chg_data *data)
{
	unsigned int vid;
	int ret;

	ret = regmap_field_read(data->rm_field[F_VENDOR], &vid);
	if (ret) {
		dev_err(data->dev, "Failed to get vid\n");
		return ret;
	}

	if ((vid != RT9466_VID) && (vid != RT9467_VID))
		return dev_err_probe(data->dev, -ENODEV,
				     "VID not correct [0x%02X]\n", vid);

	data->vid = vid;
	return 0;
}

static int rt9467_reset_chip(struct rt9467_chg_data *data)
{
	int ret;

	/* Disable HZ before reset chip */
	ret = regmap_field_write(data->rm_field[F_HZ], 0);
	if (ret)
		return ret;

	return regmap_field_write(data->rm_field[F_RST], 1);
}

static void rt9467_chg_destroy_adc_lock(void *data)
{
	struct mutex *adc_lock = data;

	mutex_destroy(adc_lock);
}

static void rt9467_chg_destroy_attach_lock(void *data)
{
	struct mutex *attach_lock = data;

	mutex_destroy(attach_lock);
}

static void rt9467_chg_destroy_ichg_ieoc_lock(void *data)
{
	struct mutex *ichg_ieoc_lock = data;

	mutex_destroy(ichg_ieoc_lock);
}

static void rt9467_chg_complete_aicl_done(void *data)
{
	struct completion *aicl_done = data;

	complete(aicl_done);
}

static int rt9467_charger_probe(struct i2c_client *i2c)
{
	struct device *dev = &i2c->dev;
	struct rt9467_chg_data *data;
	struct gpio_desc *ceb_gpio;
	int ret;

	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->dev = &i2c->dev;
	i2c_set_clientdata(i2c, data);

	/* Default pull charge enable gpio to make 'CHG_EN' by SW control only */
	ceb_gpio = devm_gpiod_get_optional(dev, "charge-enable", GPIOD_OUT_HIGH);
	if (IS_ERR(ceb_gpio))
		return dev_err_probe(dev, PTR_ERR(ceb_gpio),
				     "Failed to config charge enable gpio\n");

	data->regmap = devm_regmap_init_i2c(i2c, &rt9467_regmap_config);
	if (IS_ERR(data->regmap))
		return dev_err_probe(dev, PTR_ERR(data->regmap),
				     "Failed to init regmap\n");

	ret = devm_regmap_field_bulk_alloc(dev, data->regmap,
					   data->rm_field, rt9467_chg_fields,
					   ARRAY_SIZE(rt9467_chg_fields));
	if (ret)
		return dev_err_probe(dev, ret, "Failed to alloc regmap fields\n");

	ret = rt9467_check_vendor_info(data);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to check vendor info");

	ret = rt9467_reset_chip(data);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to reset chip\n");

	ret = devm_regmap_add_irq_chip(dev, data->regmap, i2c->irq,
				       IRQF_TRIGGER_LOW | IRQF_ONESHOT, 0,
				       &rt9467_irq_chip, &data->irq_chip_data);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to add irq chip\n");

	mutex_init(&data->adc_lock);
	ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_adc_lock,
				       &data->adc_lock);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to init ADC lock\n");

	mutex_init(&data->attach_lock);
	ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_attach_lock,
				       &data->attach_lock);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to init attach lock\n");

	mutex_init(&data->ichg_ieoc_lock);
	ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_ichg_ieoc_lock,
				       &data->ichg_ieoc_lock);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to init ICHG/IEOC lock\n");

	init_completion(&data->aicl_done);
	ret = devm_add_action_or_reset(dev, rt9467_chg_complete_aicl_done,
				       &data->aicl_done);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to init AICL done completion\n");

	ret = rt9467_do_charger_init(data);
	if (ret)
		return ret;

	ret = rt9467_register_otg_regulator(data);
	if (ret)
		return ret;

	ret = rt9467_register_psy(data);
	if (ret)
		return ret;

	return rt9467_request_interrupt(data);
}

static const struct of_device_id rt9467_charger_of_match_table[] = {
	{ .compatible = "richtek,rt9467", },
	{}
};
MODULE_DEVICE_TABLE(of, rt9467_charger_of_match_table);

static struct i2c_driver rt9467_charger_driver = {
	.driver = {
		.name = "rt9467-charger",
		.of_match_table = rt9467_charger_of_match_table,
	},
	.probe = rt9467_charger_probe,
};
module_i2c_driver(rt9467_charger_driver);

MODULE_DESCRIPTION("Richtek RT9467 Charger Driver");
MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>");
MODULE_LICENSE("GPL");