kernel_samsung_a34x-permissive/drivers/regulator/mt6360-regulator.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2019 MediaTek Inc.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
#include <linux/crc8.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>

#include <linux/mfd/mt6360.h>
#include <linux/mfd/mt6360-private.h>

enum {
	MT6360_PMIC_BUCK1 = 0,
	MT6360_PMIC_BUCK2,
	MT6360_PMIC_LDO6,
	MT6360_PMIC_LDO7,
};

enum {
	MT6360_LDO_LDO1 = 0,
	MT6360_LDO_LDO2,
	MT6360_LDO_LDO3,
	MT6360_LDO_LDO5,
};

#define MT6360_MAX_REGULATOR		(4)

/* PMIC register defininition */
#define MT6360_PMIC_BUCK1_VOSEL		(0x10)
#define MT6360_PMIC_BUCK1_EN_CTRL2	(0x17)
#define MT6360_PMIC_BUCK2_VOSEL		(0x20)
#define MT6360_PMIC_BUCK2_EN_CTRL2	(0x27)
#define MT6360_PMIC_LDO7_EN_CTRL2	(0x31)
#define MT6360_PMIC_LDO7_CTRL3		(0x35)
#define MT6360_PMIC_LDO6_EN_CTRL2	(0x37)
#define MT6360_PMIC_LDO6_CTRL3		(0x3B)
#define MT6360_PMIC_REGMAX		(0x3C)

/* LDO register defininition */
#define MT6360_LDO_LDO3_EN_CTRL2	(0x05)
#define MT6360_LDO_LDO3_CTRL3		(0x09)
#define MT6360_LDO_LDO5_EN_CTRL2	(0x0B)
#define MT6360_LDO_LDO5_CTRL0		(0x0C)
#define MT6360_LDO_LDO5_CTRL3		(0x0F)
#define MT6360_LDO_LDO2_EN_CTRL2	(0x11)
#define MT6360_LDO_LDO2_CTRL3		(0x15)
#define MT6360_LDO_LDO1_EN_CTRL2	(0x17)
#define MT6360_LDO_LDO1_CTRL3		(0x1B)
#define MT6360_LDO_REGMAX		(0x1C)

#define MT6360_OPMODE_LP		(2)
#define MT6360_OPMODE_ULP		(3)
#define MT6360_OPMODE_NORMAL		(0)

struct mt6360_regulator_desc {
	const struct regulator_desc desc;
	unsigned int control_reg;
	unsigned int mode_set_mask;
	unsigned int mode_get_mask;
};

struct mt6360_regulator_devdata {
	int i2c_idx;
	const struct regmap_config *regmap_config;
	const struct mt6360_regulator_desc *reg_descs;
	int num_reg_descs;
	const struct mt6360_pmu_irq_desc *irq_descs;
	int num_irq_descs;
};

struct mt6360_regulator_info {
	struct i2c_client *i2c;
	struct device *dev;
	struct regulator_dev *rdev[MT6360_MAX_REGULATOR];
	struct regmap *regmap;
	unsigned int chip_rev;
	u8 crc8_table[CRC8_TABLE_SIZE];
};

#define MT6360_REGU_IRQH(_name, _rid, _event) \
static irqreturn_t mt6360_pmu_##_name##_handler(int irq, void *data) \
{ \
	struct mt6360_regulator_info *mri = data; \
	dev_warn(mri->dev, "%s\n", __func__); \
	regulator_notifier_call_chain(mri->rdev[_rid], _event, NULL); \
	return IRQ_HANDLED; \
}

#define MT6360_REGU_IRQ(_name) { #_name, mt6360_pmu_##_name##_handler }

/* PMIC irqs */
MT6360_REGU_IRQH(buck1_pgb_evt, MT6360_PMIC_BUCK1, REGULATOR_EVENT_FAIL)
MT6360_REGU_IRQH(buck1_oc_evt, MT6360_PMIC_BUCK1, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(buck1_ov_evt,
		 MT6360_PMIC_BUCK1, REGULATOR_EVENT_REGULATION_OUT)
MT6360_REGU_IRQH(buck1_uv_evt, MT6360_PMIC_BUCK1, REGULATOR_EVENT_UNDER_VOLTAGE)
MT6360_REGU_IRQH(buck2_pgb_evt, MT6360_PMIC_BUCK2, REGULATOR_EVENT_FAIL)
MT6360_REGU_IRQH(buck2_oc_evt, MT6360_PMIC_BUCK2, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(buck2_ov_evt,
		 MT6360_PMIC_BUCK2, REGULATOR_EVENT_REGULATION_OUT)
MT6360_REGU_IRQH(buck2_uv_evt, MT6360_PMIC_BUCK2, REGULATOR_EVENT_UNDER_VOLTAGE)
MT6360_REGU_IRQH(ldo6_oc_evt, MT6360_PMIC_LDO6, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(ldo7_oc_evt, MT6360_PMIC_LDO7, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(ldo6_pgb_evt, MT6360_PMIC_LDO6, REGULATOR_EVENT_FAIL)
MT6360_REGU_IRQH(ldo7_pgb_evt, MT6360_PMIC_LDO7, REGULATOR_EVENT_FAIL)

/* LDO irqs */
MT6360_REGU_IRQH(ldo1_oc_evt, MT6360_LDO_LDO1, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(ldo2_oc_evt, MT6360_LDO_LDO2, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(ldo3_oc_evt, MT6360_LDO_LDO3, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(ldo5_oc_evt, MT6360_LDO_LDO5, REGULATOR_EVENT_OVER_CURRENT)
MT6360_REGU_IRQH(ldo1_pgb_evt, MT6360_LDO_LDO1, REGULATOR_EVENT_FAIL)
MT6360_REGU_IRQH(ldo2_pgb_evt, MT6360_LDO_LDO2, REGULATOR_EVENT_FAIL)
MT6360_REGU_IRQH(ldo3_pgb_evt, MT6360_LDO_LDO3, REGULATOR_EVENT_FAIL)
MT6360_REGU_IRQH(ldo5_pgb_evt, MT6360_LDO_LDO5, REGULATOR_EVENT_FAIL)

static const struct mt6360_pmu_irq_desc mt6360_pmic_irq_descs[] = {
	MT6360_REGU_IRQ(buck1_pgb_evt),
	MT6360_REGU_IRQ(buck1_oc_evt),
	MT6360_REGU_IRQ(buck1_ov_evt),
	MT6360_REGU_IRQ(buck1_uv_evt),
	MT6360_REGU_IRQ(buck2_pgb_evt),
	MT6360_REGU_IRQ(buck2_oc_evt),
	MT6360_REGU_IRQ(buck2_ov_evt),
	MT6360_REGU_IRQ(buck2_uv_evt),
	MT6360_REGU_IRQ(ldo6_oc_evt),
	MT6360_REGU_IRQ(ldo7_oc_evt),
	MT6360_REGU_IRQ(ldo6_pgb_evt),
	MT6360_REGU_IRQ(ldo7_pgb_evt),
};

static const struct mt6360_pmu_irq_desc mt6360_ldo_irq_descs[] = {
	MT6360_REGU_IRQ(ldo1_oc_evt),
	MT6360_REGU_IRQ(ldo2_oc_evt),
	MT6360_REGU_IRQ(ldo3_oc_evt),
	MT6360_REGU_IRQ(ldo5_oc_evt),
	MT6360_REGU_IRQ(ldo1_pgb_evt),
	MT6360_REGU_IRQ(ldo2_pgb_evt),
	MT6360_REGU_IRQ(ldo3_pgb_evt),
	MT6360_REGU_IRQ(ldo5_pgb_evt),
};

static int mt6360_regulator_irq_register(struct platform_device *pdev,
				       struct mt6360_regulator_devdata *devdata)
{
	const struct mt6360_pmu_irq_desc *irq_desc;
	int i, irq, ret;

	for (i = 0; i < devdata->num_irq_descs; i++) {
		irq_desc = devdata->irq_descs + i;
		if (unlikely(!irq_desc->name))
			continue;
		irq = platform_get_irq_byname(pdev, irq_desc->name);
		if (irq < 0)
			continue;
		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
						irq_desc->irq_handler,
						IRQF_TRIGGER_FALLING,
						irq_desc->name,
						platform_get_drvdata(pdev));
		if (ret < 0) {
			dev_err(&pdev->dev,
				"request %s irq fail\n", irq_desc->name);
			return ret;
		}
	}
	return 0;
}

static int mt6360_regulator_set_mode(
				  struct regulator_dev *rdev, unsigned int mode)
{
	const struct mt6360_regulator_desc *desc =
			       (const struct mt6360_regulator_desc *)rdev->desc;
	int id = rdev_get_id(rdev);
	int shift = ffs(desc->mode_set_mask) - 1, ret;
	unsigned int val;

	dev_dbg(&rdev->dev, "%s, id = %d, mode = %d\n", __func__, id, mode);
	if (!mode)
		return -EINVAL;
	switch (1 << (ffs(mode) - 1)) {
	case REGULATOR_MODE_NORMAL:
		val = MT6360_OPMODE_NORMAL;
		break;
	case REGULATOR_MODE_STANDBY:
		val = MT6360_OPMODE_ULP;
		break;
	case REGULATOR_MODE_IDLE:
		val = MT6360_OPMODE_LP;
		break;
	default:
		return -ENOTSUPP;
	}
	ret = regmap_update_bits(rdev->regmap, desc->control_reg,
				 desc->mode_set_mask, val << shift);
	if (ret < 0) {
		dev_err(&rdev->dev, "%s: fail (%d)\n", __func__, ret);
		return ret;
	}
	return 0;
}

static unsigned int mt6360_regulator_get_mode(struct regulator_dev *rdev)
{
	const struct mt6360_regulator_desc *desc =
			       (const struct mt6360_regulator_desc *)rdev->desc;
	int id = rdev_get_id(rdev);
	int shift = ffs(desc->mode_get_mask) - 1, ret;
	unsigned int val = 0;

	dev_dbg(&rdev->dev, "%s, id = %d\n", __func__, id);
	ret = regmap_read(rdev->regmap, desc->control_reg, &val);
	if (ret < 0)
		return ret;
	val &= desc->mode_get_mask;
	val >>= shift;
	switch (val) {
	case MT6360_OPMODE_LP:
		ret = REGULATOR_MODE_IDLE;
		break;
	case MT6360_OPMODE_ULP:
		ret = REGULATOR_MODE_STANDBY;
		break;
	case MT6360_OPMODE_NORMAL:
		ret = REGULATOR_MODE_NORMAL;
		break;
	default:
		ret = 0;
	}
	return ret;
}

static unsigned int mt6360_regulator_of_map_mode(unsigned int hw_mode)
{
	unsigned int trans_mode = 0;

	switch (hw_mode) {
	case MT6360_OPMODE_NORMAL:
		trans_mode = REGULATOR_MODE_NORMAL;
		break;
	case MT6360_OPMODE_LP:
		trans_mode = REGULATOR_MODE_IDLE;
		break;
	case MT6360_OPMODE_ULP:
		trans_mode = REGULATOR_MODE_STANDBY;
		break;
	}
	return trans_mode;
}

static const struct regulator_ops mt6360_pmic_regulator_ops = {
	.list_voltage = regulator_list_voltage_linear,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_mode = mt6360_regulator_set_mode,
	.get_mode = mt6360_regulator_get_mode,
};

#define MT6360_PMIC_DESC(_name, _min, _stp, _cnt, _vreg, _vmask, \
			 _enreg, _enmask, _ctrlreg, _modesmask, _modegmask) \
{									\
	.desc = {							\
		.name = #_name,						\
		.id =  MT6360_PMIC_##_name,				\
		.owner = THIS_MODULE,					\
		.ops = &mt6360_pmic_regulator_ops,			\
		.of_match = of_match_ptr(#_name),			\
		.min_uV = _min,						\
		.uV_step = _stp,					\
		.n_voltages = _cnt,					\
		.type = REGULATOR_VOLTAGE,				\
		.vsel_reg = _vreg,					\
		.vsel_mask = _vmask,					\
		.enable_reg = _enreg,					\
		.enable_mask = _enmask,					\
		.of_map_mode = mt6360_regulator_of_map_mode,		\
	},								\
	.control_reg = _ctrlreg,					\
	.mode_set_mask = _modesmask,					\
	.mode_get_mask = _modegmask,					\
}

static const struct mt6360_regulator_desc mt6360_pmic_descs[] =  {
	MT6360_PMIC_DESC(BUCK1, 300000, 5000, 201, MT6360_PMIC_BUCK1_VOSEL,
			 0xff, MT6360_PMIC_BUCK1_EN_CTRL2, 0x40,
			 MT6360_PMIC_BUCK1_EN_CTRL2, 0x30, 0x03),
	MT6360_PMIC_DESC(BUCK2, 300000, 5000, 201, MT6360_PMIC_BUCK2_VOSEL,
			 0xff, MT6360_PMIC_BUCK2_EN_CTRL2, 0x40,
			 MT6360_PMIC_BUCK2_EN_CTRL2, 0x30, 0x03),
	MT6360_PMIC_DESC(LDO6, 500000, 10000, 161, MT6360_PMIC_LDO6_CTRL3,
			 0xff, MT6360_PMIC_LDO6_EN_CTRL2, 0x40,
			 MT6360_PMIC_LDO6_EN_CTRL2, 0x30, 0x03),
	MT6360_PMIC_DESC(LDO7, 500000, 10000, 161, MT6360_PMIC_LDO7_CTRL3,
			 0xff, MT6360_PMIC_LDO7_EN_CTRL2, 0x40,
			 MT6360_PMIC_LDO7_EN_CTRL2, 0x30, 0x03),
};

static const struct regulator_ops mt6360_ldo_regulator_ops = {
	.list_voltage = regulator_list_voltage_linear_range,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_mode = mt6360_regulator_set_mode,
	.get_mode = mt6360_regulator_get_mode,
};

static const struct regulator_linear_range ldo_volt_ranges1[] = {
	REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x09, 10000),
	REGULATOR_LINEAR_RANGE(1300000, 0x0a, 0x10, 0),
	REGULATOR_LINEAR_RANGE(1310000, 0x11, 0x19, 10000),
	REGULATOR_LINEAR_RANGE(1400000, 0x1a, 0x1f, 0),
	REGULATOR_LINEAR_RANGE(1500000, 0x20, 0x29, 10000),
	REGULATOR_LINEAR_RANGE(1600000, 0x2a, 0x2f, 0),
	REGULATOR_LINEAR_RANGE(1700000, 0x30, 0x39, 10000),
	REGULATOR_LINEAR_RANGE(1800000, 0x3a, 0x40, 0),
	REGULATOR_LINEAR_RANGE(1810000, 0x41, 0x49, 10000),
	REGULATOR_LINEAR_RANGE(1900000, 0x4a, 0x4f, 0),
	REGULATOR_LINEAR_RANGE(2000000, 0x50, 0x59, 10000),
	REGULATOR_LINEAR_RANGE(2100000, 0x5a, 0x60, 0),
	REGULATOR_LINEAR_RANGE(2110000, 0x61, 0x69, 10000),
	REGULATOR_LINEAR_RANGE(2200000, 0x6a, 0x70, 0),
	REGULATOR_LINEAR_RANGE(2210000, 0x71, 0x79, 10000),
	REGULATOR_LINEAR_RANGE(2300000, 0x7a, 0x7f, 0),
	REGULATOR_LINEAR_RANGE(2700000, 0x80, 0x89, 10000),
	REGULATOR_LINEAR_RANGE(2800000, 0x8a, 0x90, 0),
	REGULATOR_LINEAR_RANGE(2810000, 0x91, 0x99, 10000),
	REGULATOR_LINEAR_RANGE(2900000, 0x9a, 0xa0, 0),
	REGULATOR_LINEAR_RANGE(2910000, 0xa1, 0xa9, 10000),
	REGULATOR_LINEAR_RANGE(3000000, 0xaa, 0xb0, 0),
	REGULATOR_LINEAR_RANGE(3010000, 0xb1, 0xb9, 10000),
	REGULATOR_LINEAR_RANGE(3100000, 0xba, 0xc0, 0),
	REGULATOR_LINEAR_RANGE(3110000, 0xc1, 0xc9, 10000),
	REGULATOR_LINEAR_RANGE(3200000, 0xca, 0xcf, 0),
	REGULATOR_LINEAR_RANGE(3300000, 0xd0, 0xd9, 10000),
	REGULATOR_LINEAR_RANGE(3400000, 0xda, 0xe0, 0),
	REGULATOR_LINEAR_RANGE(3410000, 0xe1, 0xe9, 10000),
	REGULATOR_LINEAR_RANGE(3500000, 0xea, 0xf0, 0),
	REGULATOR_LINEAR_RANGE(3510000, 0xf1, 0xf9, 10000),
	REGULATOR_LINEAR_RANGE(3600000, 0xfa, 0xff, 0),
};

static const struct regulator_linear_range ldo_volt_ranges2[] = {
	REGULATOR_LINEAR_RANGE(2700000, 0x00, 0x09, 10000),
	REGULATOR_LINEAR_RANGE(2800000, 0x0a, 0x10, 0),
	REGULATOR_LINEAR_RANGE(2810000, 0x11, 0x19, 10000),
	REGULATOR_LINEAR_RANGE(2900000, 0x1a, 0x20, 0),
	REGULATOR_LINEAR_RANGE(2910000, 0x21, 0x29, 10000),
	REGULATOR_LINEAR_RANGE(3000000, 0x2a, 0x30, 0),
	REGULATOR_LINEAR_RANGE(3010000, 0x31, 0x39, 10000),
	REGULATOR_LINEAR_RANGE(3100000, 0x3a, 0x40, 0),
	REGULATOR_LINEAR_RANGE(3110000, 0x41, 0x49, 10000),
	REGULATOR_LINEAR_RANGE(3200000, 0x4a, 0x4f, 0),
	REGULATOR_LINEAR_RANGE(3300000, 0x50, 0x59, 10000),
	REGULATOR_LINEAR_RANGE(3400000, 0x5a, 0x60, 0),
	REGULATOR_LINEAR_RANGE(3410000, 0x61, 0x69, 10000),
	REGULATOR_LINEAR_RANGE(3500000, 0x6a, 0x70, 0),
	REGULATOR_LINEAR_RANGE(3510000, 0x71, 0x79, 10000),
	REGULATOR_LINEAR_RANGE(3600000, 0x7a, 0x7f, 0),
};

#define MT6360_LDO_DESC(_name, _vranges, _vcnt, _vreg, _vmask, _enreg, \
		      _enmask, _ctrlreg, _modesmask, _modegmask, _offon_delay) \
{									\
	.desc = {							\
		.name = #_name,						\
		.id =  MT6360_LDO_##_name,				\
		.owner = THIS_MODULE,					\
		.ops = &mt6360_ldo_regulator_ops,			\
		.of_match = of_match_ptr(#_name),			\
		.linear_ranges = _vranges,				\
		.n_linear_ranges = ARRAY_SIZE(_vranges),		\
		.n_voltages = _vcnt,					\
		.type = REGULATOR_VOLTAGE,				\
		.vsel_reg = _vreg,					\
		.vsel_mask = _vmask,					\
		.enable_reg = _enreg,					\
		.enable_mask = _enmask,					\
		.off_on_delay = _offon_delay,				\
		.of_map_mode = mt6360_regulator_of_map_mode,		\
	},								\
	.control_reg = _ctrlreg,					\
	.mode_set_mask = _modesmask,					\
	.mode_get_mask = _modegmask,					\
}

static const struct mt6360_regulator_desc mt6360_ldo_descs[] =  {
	MT6360_LDO_DESC(LDO1, ldo_volt_ranges1, 256, MT6360_LDO_LDO1_CTRL3,
			0xff, MT6360_LDO_LDO1_EN_CTRL2, 0x40,
			MT6360_LDO_LDO1_EN_CTRL2, 0x30, 0x03, 0),
	MT6360_LDO_DESC(LDO2, ldo_volt_ranges1, 256, MT6360_LDO_LDO2_CTRL3,
			0xff, MT6360_LDO_LDO2_EN_CTRL2, 0x40,
			MT6360_LDO_LDO2_EN_CTRL2, 0x30, 0x03, 0),
	MT6360_LDO_DESC(LDO3, ldo_volt_ranges1, 256, MT6360_LDO_LDO3_CTRL3,
			0xff, MT6360_LDO_LDO3_EN_CTRL2, 0x40,
			MT6360_LDO_LDO3_EN_CTRL2, 0x30, 0x03, 100),
	MT6360_LDO_DESC(LDO5, ldo_volt_ranges2, 128, MT6360_LDO_LDO5_CTRL3,
			0xff, MT6360_LDO_LDO5_EN_CTRL2, 0x40,
			MT6360_LDO_LDO5_EN_CTRL2, 0x30, 0x03, 100),
};

static int mt6360_regulator_reg_write(void *context,
				      unsigned int reg, unsigned int val)
{
	struct mt6360_regulator_info *mri = context;
	u8 chunk[5] = {0};

	/* chunk 0 ->i2c addr, 1 -> reg_addr, 2 -> reg_val 3-> crc8 */
	chunk[0] = (mri->i2c->addr & 0x7f) << 1;
	chunk[1] = reg & 0x3f;
	chunk[2] = (u8)val;
	chunk[3] = crc8(mri->crc8_table, chunk, 3, 0);
	/* also dummy one byte */
	return i2c_smbus_write_i2c_block_data(mri->i2c, chunk[1], 3, chunk + 2);
}

static int mt6360_regulator_reg_read(void *context,
				     unsigned int reg, unsigned int *val)
{
	struct mt6360_regulator_info *mri = context;
	u8 chunk[5] = {0};
	int ret;

	/* chunk 0->i2c addr, 1->reg_addr, 2->reg_val, 3->crc8, 4->crck */
	chunk[0] = ((mri->i2c->addr & 0x7f) << 1) + 1;
	chunk[1] = reg & 0x3f;
	ret =  i2c_smbus_read_i2c_block_data(mri->i2c, chunk[1], 2, chunk + 2);
	if (ret < 0)
		return ret;
	chunk[4] = crc8(mri->crc8_table, chunk, 3, 0);
	if (chunk[3] != chunk[4])
		return -EINVAL;
	*val = chunk[2];
	return 0;
}

static const struct regmap_config mt6360_pmic_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.reg_read = mt6360_regulator_reg_read,
	.reg_write = mt6360_regulator_reg_write,
	.max_register = MT6360_PMIC_REGMAX,
	.use_single_rw = true,
};

static const struct regmap_config mt6360_ldo_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.reg_read = mt6360_regulator_reg_read,
	.reg_write = mt6360_regulator_reg_write,
	.max_register = MT6360_LDO_REGMAX,
	.use_single_rw = true,
};

static const struct mt6360_regulator_devdata mt6360_pmic_devdata = {
	.i2c_idx = MT6360_SLAVE_PMIC,
	.regmap_config = &mt6360_pmic_regmap_config,
	.reg_descs = mt6360_pmic_descs,
	.num_reg_descs = ARRAY_SIZE(mt6360_pmic_descs),
	.irq_descs = mt6360_pmic_irq_descs,
	.num_irq_descs = ARRAY_SIZE(mt6360_pmic_irq_descs),
};

static const struct mt6360_regulator_devdata mt6360_ldo_devdata = {
	.i2c_idx = MT6360_SLAVE_LDO,
	.regmap_config = &mt6360_ldo_regmap_config,
	.reg_descs = mt6360_ldo_descs,
	.num_reg_descs = ARRAY_SIZE(mt6360_ldo_descs),
	.irq_descs = mt6360_ldo_irq_descs,
	.num_irq_descs = ARRAY_SIZE(mt6360_ldo_irq_descs),
};

static const struct of_device_id __maybe_unused mt6360_regulator_of_id[] = {
	{
		.compatible = "mediatek,mt6360_pmic",
		.data = (void *)&mt6360_pmic_devdata,
	},
	{
		.compatible = "mediatek,mt6360_ldo",
		.data = (void *)&mt6360_ldo_devdata,
	},
	{},
};
MODULE_DEVICE_TABLE(of, mt6360_regulator_of_id);

static int mt6360_regulator_probe(struct platform_device *pdev)
{
	struct mt6360_pmu_info *pmu_info = dev_get_drvdata(pdev->dev.parent);
	struct mt6360_regulator_devdata *devdata;
	struct mt6360_regulator_info *mri;
	struct regulator_config config = {};
	const struct of_device_id *match;
	const struct platform_device_id *id;
	int i, ret;

	mri = devm_kzalloc(&pdev->dev, sizeof(*mri), GFP_KERNEL);
	if (!mri)
		return -ENOMEM;

	if (pdev->dev.of_node) {
		match = of_match_device(
			      of_match_ptr(mt6360_regulator_of_id), &pdev->dev);
		if (!match) {
			dev_err(&pdev->dev, "no match device id\n");
			return -EINVAL;
		}
		devdata = (struct mt6360_regulator_devdata *)match->data;
	} else {
		id = platform_get_device_id(pdev);
		devdata = (struct mt6360_regulator_devdata *)id->driver_data;
	}
	mri->i2c = pmu_info->i2c[devdata->i2c_idx];
	mri->dev = &pdev->dev;
	mri->chip_rev = pmu_info->chip_rev;
	crc8_populate_msb(mri->crc8_table, 0x7);
	platform_set_drvdata(pdev, mri);

	/* regmap regiser */
	mri->regmap = devm_regmap_init(&(mri->i2c->dev),
				       NULL, mri, devdata->regmap_config);
	if (IS_ERR(mri->regmap)) {
		dev_err(&pdev->dev, "Fail to register regmap\n");
		return PTR_ERR(mri->regmap);
	}
	/* regulator register */
	config.dev = &pdev->dev;
	config.driver_data = mri;
	config.regmap = mri->regmap;
	for (i = 0; i < devdata->num_reg_descs; i++) {
		mri->rdev[i] = devm_regulator_register(&pdev->dev,
					&(devdata->reg_descs[i].desc), &config);
		if (IS_ERR(mri->rdev[i])) {
			dev_err(&pdev->dev,
				"fail to register  %d regulaotr\n", i);
			return PTR_ERR(mri->rdev[i]);
		}
	}
	ret = mt6360_regulator_irq_register(pdev, devdata);
	if (ret < 0) {
		dev_err(&pdev->dev, "Fail to register irqs\n");
		return ret;
	}
	dev_info(&pdev->dev, "Successfully probed\n");
	return 0;
}

static const struct platform_device_id mt6360_regulator_id[] = {
	{ "mt6360_pmic", (kernel_ulong_t)&mt6360_pmic_devdata },
	{ "mt6360_ldo", (kernel_ulong_t)&mt6360_ldo_devdata },
	{ },
};
MODULE_DEVICE_TABLE(platform, mt6360_regulator_id);

static struct platform_driver mt6360_regulator_driver = {
	.driver = {
		.name = "mt6360_regulator",
		.of_match_table = of_match_ptr(mt6360_regulator_of_id),
	},
	.probe = mt6360_regulator_probe,
	.id_table = mt6360_regulator_id,
};
module_platform_driver(mt6360_regulator_driver);

MODULE_AUTHOR("CY_Huang <cy_huang@richtek.com>");
MODULE_DESCRIPTION("MT6360 Regulator Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION("1.0.0");