drivers/regulator/tps62864-regulator.c - manifest_repos/kernel - Git at Google

 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 /*
  * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
  */

 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_gpio.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/tps62864.h>
 #include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/regmap.h>

 /* Register definitions */
 #define TPS62864_REG_VOUT1		0x1
 #define TPS62864_REG_VOUT2		0x2
 #define TPS62864_REG_CONTROL	0x3
 #define TPS62864_REG_STATUS		0x5
 #define TPS62864_MAX_REG		TPS62864_REG_STATUS
 #define TPS62864_MAX_VOUT_REG	2

 /* TPS62864 CONTROL register (TPS62864_REG_CONTROL 0x3) */
 #define TPS62864_RESET							BIT(7)
 #define TPS62864_FPWM_ENABLE_DURNING_OUT_CHG	BIT(6)
 #define TPS62864_SW_ENABLE						BIT(5)
 #define TPS62864_FPWM_ENABLE					BIT(4)
 #define TPS62864_DISCH_ENABLE					BIT(3)
 #define TPS62864_HICCUP_ENABLE					BIT(2)

 #define TPS62864_RAMP_20mV_PER_US			0x0
 #define TPS62864_RAMP_10mV_PER_US			0x1
 #define TPS62864_RAMP_5mV_PER_US			0x2
 #define TPS62864_RAMP_1mV_PER_US			0x3
 #define TPS62864_RAMP_MASK					0x3

 /* Output voltage settings */
 #define TPS62864_BASE_VOLTAGE	400000
 #define TPS62864_N_VOLTAGES	256
 #define TPS62864_UV_STEP	5000

 #define TPS62864_MODE_POWER_SAVE    0
 #define TPS62864_MODE_FORCED_PWM    1

 enum chips {TPS62864, TPS62866};

 /* tps 62864 chip information */
 struct tps62864_chip {
 	struct device *dev;
 	struct regulator_desc desc;
 	struct regulator_dev *rdev;
 	struct regmap *regmap;
 };

 static int tps62864_dcdc_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct tps62864_chip *tps = rdev_get_drvdata(dev);
 	unsigned int data = 0;
 	int ret;

 	ret = regmap_read(tps->regmap, tps->desc.vsel_reg, &data);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
 			__func__, tps->desc.vsel_reg, ret);
 		return ret;
 	}

 	return (int)data;
 }

 static int tps62864_dcdc_set_voltage_sel(struct regulator_dev *dev,
 					 unsigned int selector)
 {
 	struct tps62864_chip *tps = rdev_get_drvdata(dev);
 	int ret;

 	ret = regmap_write(tps->regmap, tps->desc.vsel_reg, selector);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): register %d write failed with err %d\n",
 			 __func__, tps->desc.vsel_reg, ret);
 		return ret;
 	}

 	return 0;
 }

 static unsigned int tps62864_of_map_mode(unsigned int mode)
 {
 	switch (mode) {
 	case TPS62864_MODE_POWER_SAVE:
 		return REGULATOR_MODE_NORMAL;
 	case TPS62864_MODE_FORCED_PWM:
 		return REGULATOR_MODE_FAST;
 	}

 	return REGULATOR_MODE_INVALID;
 }

 static int tps62864_set_mode(struct regulator_dev *rdev, unsigned int mode)
 {
 	struct tps62864_chip *tps = rdev_get_drvdata(rdev);
 	int val;
 	int ret;

 	/* Enable force PWM mode in FAST mode only. */
 	switch (mode) {
 	case REGULATOR_MODE_FAST:
 		val = TPS62864_FPWM_ENABLE;
 		break;

 	case REGULATOR_MODE_NORMAL:
 		val = 0;
 		break;

 	default:
 		return -EINVAL;
 	}

 	ret = regmap_update_bits(tps->regmap, TPS62864_REG_CONTROL, TPS62864_FPWM_ENABLE, val);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): register %d update failed with err %d\n",
 			__func__, TPS62864_REG_CONTROL, ret);
 	}
 	return ret;
 }

 static unsigned int tps62864_get_mode(struct regulator_dev *rdev)
 {
 	struct tps62864_chip *tps = rdev_get_drvdata(rdev);
 	unsigned int data;
 	int ret;

 	ret = regmap_read(tps->regmap, TPS62864_REG_CONTROL, &data);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
 			__func__, TPS62864_REG_CONTROL, ret);
 		return ret;
 	}
 	return (data & TPS62864_FPWM_ENABLE) ? REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
 }

 static int tps62864_set_ramp_delay(struct regulator_dev *rdev,
 		int ramp_delay)
 {
 	struct tps62864_chip *tps = rdev_get_drvdata(rdev);
 	unsigned int control;
 	int ret;

 	/* Set ramp delay */
 	if (ramp_delay <= 1000)
 		control = TPS62864_RAMP_1mV_PER_US;
 	else if (ramp_delay <= 5000)
 		control = TPS62864_RAMP_5mV_PER_US;
 	else if (ramp_delay <= 10000)
 		control = TPS62864_RAMP_10mV_PER_US;
 	else if (ramp_delay <= 20000)
 		control = TPS62864_RAMP_20mV_PER_US;
 	else
 		return -EINVAL;

 	ret = regmap_update_bits(tps->regmap, TPS62864_REG_CONTROL,
 			TPS62864_RAMP_MASK, control);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): register %d update failed with err %d",
 				__func__, TPS62864_REG_CONTROL, ret);
 	}
 	return ret;
 }

 static struct regulator_ops tps62864_dcdc_ops = {
 	.get_voltage_sel	= tps62864_dcdc_get_voltage_sel,
 	.set_voltage_sel	= tps62864_dcdc_set_voltage_sel,
 	.list_voltage		= regulator_list_voltage_linear,
 	.map_voltage		= regulator_map_voltage_linear,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
 	.set_mode		= tps62864_set_mode,
 	.get_mode		= tps62864_get_mode,
 	.set_ramp_delay		= tps62864_set_ramp_delay,
 };

 static int tps62864_init_dcdc(struct tps62864_chip *tps,
 		struct tps62864_regulator_platform_data *pdata)
 {
 	int ret;
 	unsigned int ramp_speed;
 	unsigned int data;

 	/* Get voltage ramp speed from control register */
 	ret = regmap_read(tps->regmap, TPS62864_REG_CONTROL, &data);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
 			__func__, TPS62864_REG_CONTROL, ret);
 		return ret;
 	}

 	ramp_speed = data & TPS62864_RAMP_MASK;
 	switch (ramp_speed) {
 	case TPS62864_RAMP_20mV_PER_US:
 		tps->desc.ramp_delay = 20000;
 		break;
 	case TPS62864_RAMP_10mV_PER_US:
 		tps->desc.ramp_delay = 10000;
 		break;
 	case TPS62864_RAMP_5mV_PER_US:
 		tps->desc.ramp_delay = 5000;
 		break;
 	case TPS62864_RAMP_1mV_PER_US:
 	default:
 		tps->desc.ramp_delay = 1000;
 		break;
 	}

 	return ret;
 }

 static const struct regmap_config tps62864_regmap_config = {
 	.reg_bits		= 8,
 	.val_bits		= 8,
 	.max_register		= TPS62864_MAX_REG,
 	.cache_type		= REGCACHE_RBTREE,
 };

 static struct tps62864_regulator_platform_data *
 	of_get_tps62864_platform_data(struct device *dev,
 				      const struct regulator_desc *desc)
 {
 	struct tps62864_regulator_platform_data *pdata;
 	struct device_node *np = dev->of_node;
 	u32 vout_reg_id;

 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return NULL;

 	pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node,
 							  desc);
 	if (!pdata->reg_init_data) {
 		dev_err(dev, "Not able to get OF regulator init data\n");
 		return NULL;
 	}

 	of_property_read_u32(np, "ti,vout-reg-id", &vout_reg_id);
 	pdata->vout_reg_id = (vout_reg_id > (TPS62864_MAX_VOUT_REG - 1)) ?
 		(TPS62864_MAX_VOUT_REG - 1) : vout_reg_id;

 	return pdata;
 }

 #if defined(CONFIG_OF)
 static const struct of_device_id tps62864_of_match[] = {
 	 { .compatible = "ti,tps62864", .data = (void *)TPS62864},
 	 { .compatible = "ti,tps62866", .data = (void *)TPS62866},
 	{},
 };
 MODULE_DEVICE_TABLE(of, tps62864_of_match);
 #endif

 static int tps62864_probe(struct i2c_client *client,
 				     const struct i2c_device_id *id)
 {
 	struct regulator_config config = { };
 	struct tps62864_regulator_platform_data *pdata;
 	struct regulator_dev *rdev;
 	struct tps62864_chip *tps;
 	int ret;
 	int chip_id;

 	pdata = dev_get_platdata(&client->dev);

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

 	tps->desc.name = client->name;
 	tps->desc.id = 0;
 	tps->desc.ops = &tps62864_dcdc_ops;
 	tps->desc.type = REGULATOR_VOLTAGE;
 	tps->desc.owner = THIS_MODULE;
 	tps->desc.min_uV = TPS62864_BASE_VOLTAGE;
 	tps->desc.uV_step = TPS62864_UV_STEP;
 	tps->desc.n_voltages = TPS62864_N_VOLTAGES;
 	tps->desc.of_map_mode = tps62864_of_map_mode;

 	if (client->dev.of_node) {
 		const struct of_device_id *match;

 		match = of_match_device(of_match_ptr(tps62864_of_match),
 				&client->dev);
 		if (!match) {
 			dev_err(&client->dev, "Error: No device match found\n");
 			return -ENODEV;
 		}
 		chip_id = (int)(long)match->data;
 		if (!pdata)
 			pdata = of_get_tps62864_platform_data(&client->dev,
 							      &tps->desc);
 	} else if (id) {
 		chip_id = id->driver_data;
 	} else {
 		dev_err(&client->dev, "No device tree match or id table match found\n");
 		return -ENODEV;
 	}

 	if (!pdata) {
 		dev_err(&client->dev, "%s(): Platform data not found\n",
 						__func__);
 		return -EIO;
 	}

 	tps->dev = &client->dev;
 	tps->desc.vsel_reg = TPS62864_REG_VOUT1 + pdata->vout_reg_id;
 	tps->regmap = devm_regmap_init_i2c(client, &tps62864_regmap_config);
 	if (IS_ERR(tps->regmap)) {
 		ret = PTR_ERR(tps->regmap);
 		dev_err(&client->dev,
 			"%s(): regmap allocation failed with err %d\n",
 			__func__, ret);
 		return ret;
 	}
 	i2c_set_clientdata(client, tps);

 	ret = tps62864_init_dcdc(tps, pdata);
 	if (ret < 0) {
 		dev_err(tps->dev, "%s(): Init failed with err = %d\n",
 				__func__, ret);
 		return ret;
 	}

 	config.dev = &client->dev;
 	config.init_data = pdata->reg_init_data;
 	config.driver_data = tps;
 	config.of_node = client->dev.of_node;
 	config.regmap = tps->regmap;

 	/* Register the regulators */
 	rdev = devm_regulator_register(&client->dev, &tps->desc, &config);
 	if (IS_ERR(rdev)) {
 		dev_err(tps->dev,
 			"%s(): regulator register failed with err %s\n",
 			__func__, id->name);
 		return PTR_ERR(rdev);
 	}
 	tps->rdev = rdev;

 	return 0;
 }

 static const struct i2c_device_id tps62864_id[] = {
 	{.name = "tps62864", .driver_data = TPS62864},
 	{.name = "tps62866", .driver_data = TPS62866},
 	{},
 };

 MODULE_DEVICE_TABLE(i2c, tps62864_id);

 static struct i2c_driver tps62864_i2c_driver = {
 	.driver = {
 		.name = "tps62864",
 		.of_match_table = of_match_ptr(tps62864_of_match),
 	},
 	.probe = tps62864_probe,
 	.id_table = tps62864_id,
 };

 static int __init tps62864_init(void)
 {
 	return i2c_add_driver(&tps62864_i2c_driver);
 }
 subsys_initcall(tps62864_init);

 static void __exit tps62864_cleanup(void)
 {
 	i2c_del_driver(&tps62864_i2c_driver);
 }
 module_exit(tps62864_cleanup);

 MODULE_AUTHOR("Edward Ho <Edward.Ho@amlogic.com>");
 MODULE_DESCRIPTION("TPS6286x voltage regulator driver");
 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
	/*
	* Copyright (c) 2019 Amlogic, Inc. All rights reserved.
	*/

	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/of.h>
	#include <linux/of_device.h>
	#include <linux/of_gpio.h>
	#include <linux/regulator/of_regulator.h>
	#include <linux/platform_device.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/regulator/tps62864.h>
	#include <linux/gpio.h>
	#include <linux/i2c.h>
	#include <linux/slab.h>
	#include <linux/regmap.h>

	/* Register definitions */
	#define TPS62864_REG_VOUT1 0x1
	#define TPS62864_REG_VOUT2 0x2
	#define TPS62864_REG_CONTROL 0x3
	#define TPS62864_REG_STATUS 0x5
	#define TPS62864_MAX_REG TPS62864_REG_STATUS
	#define TPS62864_MAX_VOUT_REG 2

	/* TPS62864 CONTROL register (TPS62864_REG_CONTROL 0x3) */
	#define TPS62864_RESET BIT(7)
	#define TPS62864_FPWM_ENABLE_DURNING_OUT_CHG BIT(6)
	#define TPS62864_SW_ENABLE BIT(5)
	#define TPS62864_FPWM_ENABLE BIT(4)
	#define TPS62864_DISCH_ENABLE BIT(3)
	#define TPS62864_HICCUP_ENABLE BIT(2)

	#define TPS62864_RAMP_20mV_PER_US 0x0
	#define TPS62864_RAMP_10mV_PER_US 0x1
	#define TPS62864_RAMP_5mV_PER_US 0x2
	#define TPS62864_RAMP_1mV_PER_US 0x3
	#define TPS62864_RAMP_MASK 0x3

	/* Output voltage settings */
	#define TPS62864_BASE_VOLTAGE 400000
	#define TPS62864_N_VOLTAGES 256
	#define TPS62864_UV_STEP 5000

	#define TPS62864_MODE_POWER_SAVE 0
	#define TPS62864_MODE_FORCED_PWM 1

	enum chips {TPS62864, TPS62866};

	/* tps 62864 chip information */
	struct tps62864_chip {
	struct device *dev;
	struct regulator_desc desc;
	struct regulator_dev *rdev;
	struct regmap *regmap;
	};

	static int tps62864_dcdc_get_voltage_sel(struct regulator_dev *dev)
	{
	struct tps62864_chip *tps = rdev_get_drvdata(dev);
	unsigned int data = 0;
	int ret;

	ret = regmap_read(tps->regmap, tps->desc.vsel_reg, &data);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
	__func__, tps->desc.vsel_reg, ret);
	return ret;
	}

	return (int)data;
	}

	static int tps62864_dcdc_set_voltage_sel(struct regulator_dev *dev,
	unsigned int selector)
	{
	struct tps62864_chip *tps = rdev_get_drvdata(dev);
	int ret;

	ret = regmap_write(tps->regmap, tps->desc.vsel_reg, selector);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): register %d write failed with err %d\n",
	__func__, tps->desc.vsel_reg, ret);
	return ret;
	}

	return 0;
	}

	static unsigned int tps62864_of_map_mode(unsigned int mode)
	{
	switch (mode) {
	case TPS62864_MODE_POWER_SAVE:
	return REGULATOR_MODE_NORMAL;
	case TPS62864_MODE_FORCED_PWM:
	return REGULATOR_MODE_FAST;
	}

	return REGULATOR_MODE_INVALID;
	}

	static int tps62864_set_mode(struct regulator_dev *rdev, unsigned int mode)
	{
	struct tps62864_chip *tps = rdev_get_drvdata(rdev);
	int val;
	int ret;

	/* Enable force PWM mode in FAST mode only. */
	switch (mode) {
	case REGULATOR_MODE_FAST:
	val = TPS62864_FPWM_ENABLE;
	break;

	case REGULATOR_MODE_NORMAL:
	val = 0;
	break;

	default:
	return -EINVAL;
	}

	ret = regmap_update_bits(tps->regmap, TPS62864_REG_CONTROL, TPS62864_FPWM_ENABLE, val);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): register %d update failed with err %d\n",
	__func__, TPS62864_REG_CONTROL, ret);
	}
	return ret;
	}

	static unsigned int tps62864_get_mode(struct regulator_dev *rdev)
	{
	struct tps62864_chip *tps = rdev_get_drvdata(rdev);
	unsigned int data;
	int ret;

	ret = regmap_read(tps->regmap, TPS62864_REG_CONTROL, &data);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
	__func__, TPS62864_REG_CONTROL, ret);
	return ret;
	}
	return (data & TPS62864_FPWM_ENABLE) ? REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
	}

	static int tps62864_set_ramp_delay(struct regulator_dev *rdev,
	int ramp_delay)
	{
	struct tps62864_chip *tps = rdev_get_drvdata(rdev);
	unsigned int control;
	int ret;

	/* Set ramp delay */
	if (ramp_delay <= 1000)
	control = TPS62864_RAMP_1mV_PER_US;
	else if (ramp_delay <= 5000)
	control = TPS62864_RAMP_5mV_PER_US;
	else if (ramp_delay <= 10000)
	control = TPS62864_RAMP_10mV_PER_US;
	else if (ramp_delay <= 20000)
	control = TPS62864_RAMP_20mV_PER_US;
	else
	return -EINVAL;

	ret = regmap_update_bits(tps->regmap, TPS62864_REG_CONTROL,
	TPS62864_RAMP_MASK, control);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): register %d update failed with err %d",
	__func__, TPS62864_REG_CONTROL, ret);
	}
	return ret;
	}

	static struct regulator_ops tps62864_dcdc_ops = {
	.get_voltage_sel = tps62864_dcdc_get_voltage_sel,
	.set_voltage_sel = tps62864_dcdc_set_voltage_sel,
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	.set_mode = tps62864_set_mode,
	.get_mode = tps62864_get_mode,
	.set_ramp_delay = tps62864_set_ramp_delay,
	};

	static int tps62864_init_dcdc(struct tps62864_chip *tps,
	struct tps62864_regulator_platform_data *pdata)
	{
	int ret;
	unsigned int ramp_speed;
	unsigned int data;

	/* Get voltage ramp speed from control register */
	ret = regmap_read(tps->regmap, TPS62864_REG_CONTROL, &data);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
	__func__, TPS62864_REG_CONTROL, ret);
	return ret;
	}

	ramp_speed = data & TPS62864_RAMP_MASK;
	switch (ramp_speed) {
	case TPS62864_RAMP_20mV_PER_US:
	tps->desc.ramp_delay = 20000;
	break;
	case TPS62864_RAMP_10mV_PER_US:
	tps->desc.ramp_delay = 10000;
	break;
	case TPS62864_RAMP_5mV_PER_US:
	tps->desc.ramp_delay = 5000;
	break;
	case TPS62864_RAMP_1mV_PER_US:
	default:
	tps->desc.ramp_delay = 1000;
	break;
	}

	return ret;
	}

	static const struct regmap_config tps62864_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = TPS62864_MAX_REG,
	.cache_type = REGCACHE_RBTREE,
	};

	static struct tps62864_regulator_platform_data *
	of_get_tps62864_platform_data(struct device *dev,
	const struct regulator_desc *desc)
	{
	struct tps62864_regulator_platform_data *pdata;
	struct device_node *np = dev->of_node;
	u32 vout_reg_id;

	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
	return NULL;

	pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node,
	desc);
	if (!pdata->reg_init_data) {
	dev_err(dev, "Not able to get OF regulator init data\n");
	return NULL;
	}

	of_property_read_u32(np, "ti,vout-reg-id", &vout_reg_id);
	pdata->vout_reg_id = (vout_reg_id > (TPS62864_MAX_VOUT_REG - 1)) ?
	(TPS62864_MAX_VOUT_REG - 1) : vout_reg_id;

	return pdata;
	}

	#if defined(CONFIG_OF)
	static const struct of_device_id tps62864_of_match[] = {
	{ .compatible = "ti,tps62864", .data = (void *)TPS62864},
	{ .compatible = "ti,tps62866", .data = (void *)TPS62866},
	{},
	};
	MODULE_DEVICE_TABLE(of, tps62864_of_match);
	#endif

	static int tps62864_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
	{
	struct regulator_config config = { };
	struct tps62864_regulator_platform_data *pdata;
	struct regulator_dev *rdev;
	struct tps62864_chip *tps;
	int ret;
	int chip_id;

	pdata = dev_get_platdata(&client->dev);

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

	tps->desc.name = client->name;
	tps->desc.id = 0;
	tps->desc.ops = &tps62864_dcdc_ops;
	tps->desc.type = REGULATOR_VOLTAGE;
	tps->desc.owner = THIS_MODULE;
	tps->desc.min_uV = TPS62864_BASE_VOLTAGE;
	tps->desc.uV_step = TPS62864_UV_STEP;
	tps->desc.n_voltages = TPS62864_N_VOLTAGES;
	tps->desc.of_map_mode = tps62864_of_map_mode;

	if (client->dev.of_node) {
	const struct of_device_id *match;

	match = of_match_device(of_match_ptr(tps62864_of_match),
	&client->dev);
	if (!match) {
	dev_err(&client->dev, "Error: No device match found\n");
	return -ENODEV;
	}
	chip_id = (int)(long)match->data;
	if (!pdata)
	pdata = of_get_tps62864_platform_data(&client->dev,
	&tps->desc);
	} else if (id) {
	chip_id = id->driver_data;
	} else {
	dev_err(&client->dev, "No device tree match or id table match found\n");
	return -ENODEV;
	}

	if (!pdata) {
	dev_err(&client->dev, "%s(): Platform data not found\n",
	__func__);
	return -EIO;
	}

	tps->dev = &client->dev;
	tps->desc.vsel_reg = TPS62864_REG_VOUT1 + pdata->vout_reg_id;
	tps->regmap = devm_regmap_init_i2c(client, &tps62864_regmap_config);
	if (IS_ERR(tps->regmap)) {
	ret = PTR_ERR(tps->regmap);
	dev_err(&client->dev,
	"%s(): regmap allocation failed with err %d\n",
	__func__, ret);
	return ret;
	}
	i2c_set_clientdata(client, tps);

	ret = tps62864_init_dcdc(tps, pdata);
	if (ret < 0) {
	dev_err(tps->dev, "%s(): Init failed with err = %d\n",
	__func__, ret);
	return ret;
	}

	config.dev = &client->dev;
	config.init_data = pdata->reg_init_data;
	config.driver_data = tps;
	config.of_node = client->dev.of_node;
	config.regmap = tps->regmap;

	/* Register the regulators */
	rdev = devm_regulator_register(&client->dev, &tps->desc, &config);
	if (IS_ERR(rdev)) {
	dev_err(tps->dev,
	"%s(): regulator register failed with err %s\n",
	__func__, id->name);
	return PTR_ERR(rdev);
	}
	tps->rdev = rdev;

	return 0;
	}

	static const struct i2c_device_id tps62864_id[] = {
	{.name = "tps62864", .driver_data = TPS62864},
	{.name = "tps62866", .driver_data = TPS62866},
	{},
	};

	MODULE_DEVICE_TABLE(i2c, tps62864_id);

	static struct i2c_driver tps62864_i2c_driver = {
	.driver = {
	.name = "tps62864",
	.of_match_table = of_match_ptr(tps62864_of_match),
	},
	.probe = tps62864_probe,
	.id_table = tps62864_id,
	};

	static int __init tps62864_init(void)
	{
	return i2c_add_driver(&tps62864_i2c_driver);
	}
	subsys_initcall(tps62864_init);

	static void __exit tps62864_cleanup(void)
	{
	i2c_del_driver(&tps62864_i2c_driver);
	}
	module_exit(tps62864_cleanup);

	MODULE_AUTHOR("Edward Ho <Edward.Ho@amlogic.com>");
	MODULE_DESCRIPTION("TPS6286x voltage regulator driver");
	MODULE_LICENSE("GPL v2");