drivers/regulator/88pm800.c - kernel/msm-4.9 - Gitiles

 /*
  * Regulators driver for Marvell 88PM800
  *
  * Copyright (C) 2012 Marvell International Ltd.
  * Joseph(Yossi) Hanin <yhanin@marvell.com>
  * Yi Zhang <yizhang@marvell.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/mfd/88pm80x.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/regulator/of_regulator.h>

 /* LDO1 with DVC[0..3] */
 #define PM800_LDO1_VOUT		(0x08) /* VOUT1 */
 #define PM800_LDO1_VOUT_2	(0x09)
 #define PM800_LDO1_VOUT_3	(0x0A)
 #define PM800_LDO2_VOUT		(0x0B)
 #define PM800_LDO3_VOUT		(0x0C)
 #define PM800_LDO4_VOUT		(0x0D)
 #define PM800_LDO5_VOUT		(0x0E)
 #define PM800_LDO6_VOUT		(0x0F)
 #define PM800_LDO7_VOUT		(0x10)
 #define PM800_LDO8_VOUT		(0x11)
 #define PM800_LDO9_VOUT		(0x12)
 #define PM800_LDO10_VOUT	(0x13)
 #define PM800_LDO11_VOUT	(0x14)
 #define PM800_LDO12_VOUT	(0x15)
 #define PM800_LDO13_VOUT	(0x16)
 #define PM800_LDO14_VOUT	(0x17)
 #define PM800_LDO15_VOUT	(0x18)
 #define PM800_LDO16_VOUT	(0x19)
 #define PM800_LDO17_VOUT	(0x1A)
 #define PM800_LDO18_VOUT	(0x1B)
 #define PM800_LDO19_VOUT	(0x1C)

 /* BUCK1 with DVC[0..3] */
 #define PM800_BUCK1		(0x3C)
 #define PM800_BUCK1_1		(0x3D)
 #define PM800_BUCK1_2		(0x3E)
 #define PM800_BUCK1_3		(0x3F)
 #define PM800_BUCK2		(0x40)
 #define PM800_BUCK3		(0x41)
 #define PM800_BUCK3		(0x41)
 #define PM800_BUCK4		(0x42)
 #define PM800_BUCK4_1		(0x43)
 #define PM800_BUCK4_2		(0x44)
 #define PM800_BUCK4_3		(0x45)
 #define PM800_BUCK5		(0x46)

 #define PM800_BUCK_ENA		(0x50)
 #define PM800_LDO_ENA1_1	(0x51)
 #define PM800_LDO_ENA1_2	(0x52)
 #define PM800_LDO_ENA1_3	(0x53)

 #define PM800_LDO_ENA2_1	(0x56)
 #define PM800_LDO_ENA2_2	(0x57)
 #define PM800_LDO_ENA2_3	(0x58)

 #define PM800_BUCK1_MISC1	(0x78)
 #define PM800_BUCK3_MISC1	(0x7E)
 #define PM800_BUCK4_MISC1	(0x81)
 #define PM800_BUCK5_MISC1	(0x84)

 struct pm800_regulator_info {
 	struct regulator_desc desc;
 	int max_ua;
 };

 struct pm800_regulators {
 	struct regulator_dev *regulators[PM800_ID_RG_MAX];
 	struct pm80x_chip *chip;
 	struct regmap *map;
 };

 /*
  * vreg - the buck regs string.
  * ereg - the string for the enable register.
  * ebit - the bit number in the enable register.
  * amax - the current
  * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,
  * not the constant voltage table.
  * n_volt - Number of available selectors
  */
 #define PM800_BUCK(vreg, ereg, ebit, amax, volt_ranges, n_volt)		\
 {									\
 	.desc	= {							\
 		.name	= #vreg,					\
 		.ops	= &pm800_volt_range_ops,			\
 		.type	= REGULATOR_VOLTAGE,				\
 		.id	= PM800_ID_##vreg,				\
 		.owner	= THIS_MODULE,					\
 		.n_voltages		= n_volt,			\
 		.linear_ranges		= volt_ranges,			\
 		.n_linear_ranges	= ARRAY_SIZE(volt_ranges),	\
 		.vsel_reg		= PM800_##vreg,			\
 		.vsel_mask		= 0x7f,				\
 		.enable_reg		= PM800_##ereg,			\
 		.enable_mask		= 1 << (ebit),			\
 	},								\
 	.max_ua		= (amax),					\
 }

 /*
  * vreg - the LDO regs string
  * ereg -  the string for the enable register.
  * ebit - the bit number in the enable register.
  * amax - the current
  * volt_table - the LDO voltage table
  * For all the LDOes, there are too many ranges. Using volt_table will be
  * simpler and faster.
  */
 #define PM800_LDO(vreg, ereg, ebit, amax, ldo_volt_table)		\
 {									\
 	.desc	= {							\
 		.name	= #vreg,					\
 		.ops	= &pm800_volt_table_ops,			\
 		.type	= REGULATOR_VOLTAGE,				\
 		.id	= PM800_ID_##vreg,				\
 		.owner	= THIS_MODULE,					\
 		.n_voltages = ARRAY_SIZE(ldo_volt_table),		\
 		.vsel_reg	= PM800_##vreg##_VOUT,			\
 		.vsel_mask	= 0x1f,					\
 		.enable_reg	= PM800_##ereg,				\
 		.enable_mask	= 1 << (ebit),				\
 		.volt_table	= ldo_volt_table,			\
 	},								\
 	.max_ua		= (amax),					\
 }

 /* Ranges are sorted in ascending order. */
 static const struct regulator_linear_range buck1_volt_range[] = {
 	{ .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f,
 	  .uV_step = 12500 },
 	{ .min_uV = 1600000, .max_uV = 1800000, .min_sel = 0x50,
 	  .max_sel = 0x54, .uV_step = 50000 },
 };

 /* BUCK 2~5 have same ranges. */
 static const struct regulator_linear_range buck2_5_volt_range[] = {
 	{ .min_uV = 600000, .max_uV = 1587500,	.min_sel = 0, .max_sel = 0x4f,
 	  .uV_step = 12500 },
 	{ .min_uV = 1600000, .max_uV = 3300000, .min_sel = 0x50,
 	  .max_sel = 0x72, .uV_step = 50000 },
 };

 static const unsigned int ldo1_volt_table[] = {
 	600000,  650000,  700000,  750000,  800000,  850000,  900000,  950000,
 	1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000,
 };

 static const unsigned int ldo2_volt_table[] = {
 	1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,
 };

 /* LDO 3~17 have same voltage table. */
 static const unsigned int ldo3_17_volt_table[] = {
 	1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,
 	2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,
 };

 /* LDO 18~19 have same voltage table. */
 static const unsigned int ldo18_19_volt_table[] = {
 	1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,
 };

 static int pm800_get_current_limit(struct regulator_dev *rdev)
 {
 	struct pm800_regulator_info *info = rdev_get_drvdata(rdev);

 	return info->max_ua;
 }

 static struct regulator_ops pm800_volt_range_ops = {
 	.list_voltage = regulator_list_voltage_linear_range,
 	.map_voltage = regulator_map_voltage_linear_range,
 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
 	.is_enabled = regulator_is_enabled_regmap,
 	.get_current_limit = pm800_get_current_limit,
 };

 static struct regulator_ops pm800_volt_table_ops = {
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_iterate,
 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
 	.is_enabled = regulator_is_enabled_regmap,
 	.get_current_limit = pm800_get_current_limit,
 };

 /* The array is indexed by id(PM800_ID_XXX) */
 static struct pm800_regulator_info pm800_regulator_info[] = {
 	PM800_BUCK(BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55),
 	PM800_BUCK(BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73),
 	PM800_BUCK(BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73),
 	PM800_BUCK(BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73),
 	PM800_BUCK(BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73),

 	PM800_LDO(LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table),
 	PM800_LDO(LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table),
 	PM800_LDO(LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table),
 	PM800_LDO(LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table),
 	PM800_LDO(LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table),
 };

 #define PM800_REGULATOR_OF_MATCH(_name, _id)				\
 	[PM800_ID_##_id] = {						\
 		.name = #_name,						\
 		.driver_data = &pm800_regulator_info[PM800_ID_##_id],	\
 	}

 static struct of_regulator_match pm800_regulator_matches[] = {
 	PM800_REGULATOR_OF_MATCH(buck1, BUCK1),
 	PM800_REGULATOR_OF_MATCH(buck2, BUCK2),
 	PM800_REGULATOR_OF_MATCH(buck3, BUCK3),
 	PM800_REGULATOR_OF_MATCH(buck4, BUCK4),
 	PM800_REGULATOR_OF_MATCH(buck5, BUCK5),
 	PM800_REGULATOR_OF_MATCH(ldo1, LDO1),
 	PM800_REGULATOR_OF_MATCH(ldo2, LDO2),
 	PM800_REGULATOR_OF_MATCH(ldo3, LDO3),
 	PM800_REGULATOR_OF_MATCH(ldo4, LDO4),
 	PM800_REGULATOR_OF_MATCH(ldo5, LDO5),
 	PM800_REGULATOR_OF_MATCH(ldo6, LDO6),
 	PM800_REGULATOR_OF_MATCH(ldo7, LDO7),
 	PM800_REGULATOR_OF_MATCH(ldo8, LDO8),
 	PM800_REGULATOR_OF_MATCH(ldo9, LDO9),
 	PM800_REGULATOR_OF_MATCH(ldo10, LDO10),
 	PM800_REGULATOR_OF_MATCH(ldo11, LDO11),
 	PM800_REGULATOR_OF_MATCH(ldo12, LDO12),
 	PM800_REGULATOR_OF_MATCH(ldo13, LDO13),
 	PM800_REGULATOR_OF_MATCH(ldo14, LDO14),
 	PM800_REGULATOR_OF_MATCH(ldo15, LDO15),
 	PM800_REGULATOR_OF_MATCH(ldo16, LDO16),
 	PM800_REGULATOR_OF_MATCH(ldo17, LDO17),
 	PM800_REGULATOR_OF_MATCH(ldo18, LDO18),
 	PM800_REGULATOR_OF_MATCH(ldo19, LDO19),
 };

 static int pm800_regulator_dt_init(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	int ret;

 	ret = of_regulator_match(&pdev->dev, np,
 				 pm800_regulator_matches,
 				 ARRAY_SIZE(pm800_regulator_matches));
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static int pm800_regulator_probe(struct platform_device *pdev)
 {
 	struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
 	struct pm80x_platform_data *pdata = pdev->dev.parent->platform_data;
 	struct pm800_regulators *pm800_data;
 	struct pm800_regulator_info *info;
 	struct regulator_config config = { };
 	struct regulator_init_data *init_data;
 	int i, ret;

 	if (!pdata || pdata->num_regulators == 0) {
 		if (IS_ENABLED(CONFIG_OF)) {
 			ret = pm800_regulator_dt_init(pdev);
 			if (ret)
 				return ret;
 		} else {
 			return -ENODEV;
 		}
 	} else if (pdata->num_regulators) {
 		/* Check whether num_regulator is valid. */
 		unsigned int count = 0;
 		for (i = 0; pdata->regulators[i]; i++)
 			count++;
 		if (count != pdata->num_regulators)
 			return -EINVAL;
 	} else {
 		return -EINVAL;
 	}

 	pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data),
 					GFP_KERNEL);
 	if (!pm800_data) {
 		dev_err(&pdev->dev, "Failed to allocate pm800_regualtors");
 		return -ENOMEM;
 	}

 	pm800_data->map = chip->subchip->regmap_power;
 	pm800_data->chip = chip;

 	platform_set_drvdata(pdev, pm800_data);

 	for (i = 0; i < PM800_ID_RG_MAX; i++) {
 		if (!pdata || pdata->num_regulators == 0)
 			init_data = pm800_regulator_matches[i].init_data;
 		else
 			init_data = pdata->regulators[i];
 		if (!init_data)
 			continue;
 		info = pm800_regulator_matches[i].driver_data;
 		config.dev = &pdev->dev;
 		config.init_data = init_data;
 		config.driver_data = info;
 		config.regmap = pm800_data->map;
 		config.of_node = pm800_regulator_matches[i].of_node;

 		pm800_data->regulators[i] =
 				regulator_register(&info->desc, &config);
 		if (IS_ERR(pm800_data->regulators[i])) {
 			ret = PTR_ERR(pm800_data->regulators[i]);
 			dev_err(&pdev->dev, "Failed to register %s\n",
 				info->desc.name);

 			while (--i >= 0)
 				regulator_unregister(pm800_data->regulators[i]);

 			return ret;
 		}
 	}

 	return 0;
 }

 static int pm800_regulator_remove(struct platform_device *pdev)
 {
 	struct pm800_regulators *pm800_data = platform_get_drvdata(pdev);
 	int i;

 	for (i = 0; i < PM800_ID_RG_MAX; i++)
 		regulator_unregister(pm800_data->regulators[i]);

 	return 0;
 }

 static struct platform_driver pm800_regulator_driver = {
 	.driver		= {
 		.name	= "88pm80x-regulator",
 		.owner	= THIS_MODULE,
 	},
 	.probe		= pm800_regulator_probe,
 	.remove		= pm800_regulator_remove,
 };

 module_platform_driver(pm800_regulator_driver);

 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>");
 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC");
 MODULE_ALIAS("platform:88pm800-regulator");
	/*
	* Regulators driver for Marvell 88PM800
	*
	* Copyright (C) 2012 Marvell International Ltd.
	* Joseph(Yossi) Hanin <yhanin@marvell.com>
	* Yi Zhang <yizhang@marvell.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*/
	#include <linux/module.h>
	#include <linux/moduleparam.h>
	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/regmap.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/mfd/88pm80x.h>
	#include <linux/delay.h>
	#include <linux/io.h>
	#include <linux/of.h>
	#include <linux/regulator/of_regulator.h>

	/* LDO1 with DVC[0..3] */
	#define PM800_LDO1_VOUT (0x08) /* VOUT1 */
	#define PM800_LDO1_VOUT_2 (0x09)
	#define PM800_LDO1_VOUT_3 (0x0A)
	#define PM800_LDO2_VOUT (0x0B)
	#define PM800_LDO3_VOUT (0x0C)
	#define PM800_LDO4_VOUT (0x0D)
	#define PM800_LDO5_VOUT (0x0E)
	#define PM800_LDO6_VOUT (0x0F)
	#define PM800_LDO7_VOUT (0x10)
	#define PM800_LDO8_VOUT (0x11)
	#define PM800_LDO9_VOUT (0x12)
	#define PM800_LDO10_VOUT (0x13)
	#define PM800_LDO11_VOUT (0x14)
	#define PM800_LDO12_VOUT (0x15)
	#define PM800_LDO13_VOUT (0x16)
	#define PM800_LDO14_VOUT (0x17)
	#define PM800_LDO15_VOUT (0x18)
	#define PM800_LDO16_VOUT (0x19)
	#define PM800_LDO17_VOUT (0x1A)
	#define PM800_LDO18_VOUT (0x1B)
	#define PM800_LDO19_VOUT (0x1C)

	/* BUCK1 with DVC[0..3] */
	#define PM800_BUCK1 (0x3C)
	#define PM800_BUCK1_1 (0x3D)
	#define PM800_BUCK1_2 (0x3E)
	#define PM800_BUCK1_3 (0x3F)
	#define PM800_BUCK2 (0x40)
	#define PM800_BUCK3 (0x41)
	#define PM800_BUCK3 (0x41)
	#define PM800_BUCK4 (0x42)
	#define PM800_BUCK4_1 (0x43)
	#define PM800_BUCK4_2 (0x44)
	#define PM800_BUCK4_3 (0x45)
	#define PM800_BUCK5 (0x46)

	#define PM800_BUCK_ENA (0x50)
	#define PM800_LDO_ENA1_1 (0x51)
	#define PM800_LDO_ENA1_2 (0x52)
	#define PM800_LDO_ENA1_3 (0x53)

	#define PM800_LDO_ENA2_1 (0x56)
	#define PM800_LDO_ENA2_2 (0x57)
	#define PM800_LDO_ENA2_3 (0x58)

	#define PM800_BUCK1_MISC1 (0x78)
	#define PM800_BUCK3_MISC1 (0x7E)
	#define PM800_BUCK4_MISC1 (0x81)
	#define PM800_BUCK5_MISC1 (0x84)

	struct pm800_regulator_info {
	struct regulator_desc desc;
	int max_ua;
	};

	struct pm800_regulators {
	struct regulator_dev *regulators[PM800_ID_RG_MAX];
	struct pm80x_chip *chip;
	struct regmap *map;
	};

	/*
	* vreg - the buck regs string.
	* ereg - the string for the enable register.
	* ebit - the bit number in the enable register.
	* amax - the current
	* Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,
	* not the constant voltage table.
	* n_volt - Number of available selectors
	*/
	#define PM800_BUCK(vreg, ereg, ebit, amax, volt_ranges, n_volt) \
	{ \
	.desc = { \
	.name = #vreg, \
	.ops = &pm800_volt_range_ops, \
	.type = REGULATOR_VOLTAGE, \
	.id = PM800_ID_##vreg, \
	.owner = THIS_MODULE, \
	.n_voltages = n_volt, \
	.linear_ranges = volt_ranges, \
	.n_linear_ranges = ARRAY_SIZE(volt_ranges), \
	.vsel_reg = PM800_##vreg, \
	.vsel_mask = 0x7f, \
	.enable_reg = PM800_##ereg, \
	.enable_mask = 1 << (ebit), \
	}, \
	.max_ua = (amax), \
	}

	/*
	* vreg - the LDO regs string
	* ereg - the string for the enable register.
	* ebit - the bit number in the enable register.
	* amax - the current
	* volt_table - the LDO voltage table
	* For all the LDOes, there are too many ranges. Using volt_table will be
	* simpler and faster.
	*/
	#define PM800_LDO(vreg, ereg, ebit, amax, ldo_volt_table) \
	{ \
	.desc = { \
	.name = #vreg, \
	.ops = &pm800_volt_table_ops, \
	.type = REGULATOR_VOLTAGE, \
	.id = PM800_ID_##vreg, \
	.owner = THIS_MODULE, \
	.n_voltages = ARRAY_SIZE(ldo_volt_table), \
	.vsel_reg = PM800_##vreg##_VOUT, \
	.vsel_mask = 0x1f, \
	.enable_reg = PM800_##ereg, \
	.enable_mask = 1 << (ebit), \
	.volt_table = ldo_volt_table, \
	}, \
	.max_ua = (amax), \
	}

	/* Ranges are sorted in ascending order. */
	static const struct regulator_linear_range buck1_volt_range[] = {
	{ .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f,
	.uV_step = 12500 },
	{ .min_uV = 1600000, .max_uV = 1800000, .min_sel = 0x50,
	.max_sel = 0x54, .uV_step = 50000 },
	};

	/* BUCK 2~5 have same ranges. */
	static const struct regulator_linear_range buck2_5_volt_range[] = {
	{ .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f,
	.uV_step = 12500 },
	{ .min_uV = 1600000, .max_uV = 3300000, .min_sel = 0x50,
	.max_sel = 0x72, .uV_step = 50000 },
	};

	static const unsigned int ldo1_volt_table[] = {
	600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000,
	1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000,
	};

	static const unsigned int ldo2_volt_table[] = {
	1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,
	};

	/* LDO 3~17 have same voltage table. */
	static const unsigned int ldo3_17_volt_table[] = {
	1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,
	2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,
	};

	/* LDO 18~19 have same voltage table. */
	static const unsigned int ldo18_19_volt_table[] = {
	1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,
	};

	static int pm800_get_current_limit(struct regulator_dev *rdev)
	{
	struct pm800_regulator_info *info = rdev_get_drvdata(rdev);

	return info->max_ua;
	}

	static struct regulator_ops pm800_volt_range_ops = {
	.list_voltage = regulator_list_voltage_linear_range,
	.map_voltage = regulator_map_voltage_linear_range,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.get_current_limit = pm800_get_current_limit,
	};

	static struct regulator_ops pm800_volt_table_ops = {
	.list_voltage = regulator_list_voltage_table,
	.map_voltage = regulator_map_voltage_iterate,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.get_current_limit = pm800_get_current_limit,
	};

	/* The array is indexed by id(PM800_ID_XXX) */
	static struct pm800_regulator_info pm800_regulator_info[] = {
	PM800_BUCK(BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55),
	PM800_BUCK(BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73),
	PM800_BUCK(BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73),
	PM800_BUCK(BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73),
	PM800_BUCK(BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73),

	PM800_LDO(LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table),
	PM800_LDO(LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table),
	PM800_LDO(LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table),
	PM800_LDO(LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table),
	PM800_LDO(LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table),
	};

	#define PM800_REGULATOR_OF_MATCH(_name, _id) \
	[PM800_ID_##_id] = { \
	.name = #_name, \
	.driver_data = &pm800_regulator_info[PM800_ID_##_id], \
	}

	static struct of_regulator_match pm800_regulator_matches[] = {
	PM800_REGULATOR_OF_MATCH(buck1, BUCK1),
	PM800_REGULATOR_OF_MATCH(buck2, BUCK2),
	PM800_REGULATOR_OF_MATCH(buck3, BUCK3),
	PM800_REGULATOR_OF_MATCH(buck4, BUCK4),
	PM800_REGULATOR_OF_MATCH(buck5, BUCK5),
	PM800_REGULATOR_OF_MATCH(ldo1, LDO1),
	PM800_REGULATOR_OF_MATCH(ldo2, LDO2),
	PM800_REGULATOR_OF_MATCH(ldo3, LDO3),
	PM800_REGULATOR_OF_MATCH(ldo4, LDO4),
	PM800_REGULATOR_OF_MATCH(ldo5, LDO5),
	PM800_REGULATOR_OF_MATCH(ldo6, LDO6),
	PM800_REGULATOR_OF_MATCH(ldo7, LDO7),
	PM800_REGULATOR_OF_MATCH(ldo8, LDO8),
	PM800_REGULATOR_OF_MATCH(ldo9, LDO9),
	PM800_REGULATOR_OF_MATCH(ldo10, LDO10),
	PM800_REGULATOR_OF_MATCH(ldo11, LDO11),
	PM800_REGULATOR_OF_MATCH(ldo12, LDO12),
	PM800_REGULATOR_OF_MATCH(ldo13, LDO13),
	PM800_REGULATOR_OF_MATCH(ldo14, LDO14),
	PM800_REGULATOR_OF_MATCH(ldo15, LDO15),
	PM800_REGULATOR_OF_MATCH(ldo16, LDO16),
	PM800_REGULATOR_OF_MATCH(ldo17, LDO17),
	PM800_REGULATOR_OF_MATCH(ldo18, LDO18),
	PM800_REGULATOR_OF_MATCH(ldo19, LDO19),
	};

	static int pm800_regulator_dt_init(struct platform_device *pdev)
	{
	struct device_node *np = pdev->dev.of_node;
	int ret;

	ret = of_regulator_match(&pdev->dev, np,
	pm800_regulator_matches,
	ARRAY_SIZE(pm800_regulator_matches));
	if (ret < 0)
	return ret;

	return 0;
	}

	static int pm800_regulator_probe(struct platform_device *pdev)
	{
	struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
	struct pm80x_platform_data *pdata = pdev->dev.parent->platform_data;
	struct pm800_regulators *pm800_data;
	struct pm800_regulator_info *info;
	struct regulator_config config = { };
	struct regulator_init_data *init_data;
	int i, ret;

	if (!pdata \|\| pdata->num_regulators == 0) {
	if (IS_ENABLED(CONFIG_OF)) {
	ret = pm800_regulator_dt_init(pdev);
	if (ret)
	return ret;
	} else {
	return -ENODEV;
	}
	} else if (pdata->num_regulators) {
	/* Check whether num_regulator is valid. */
	unsigned int count = 0;
	for (i = 0; pdata->regulators[i]; i++)
	count++;
	if (count != pdata->num_regulators)
	return -EINVAL;
	} else {
	return -EINVAL;
	}

	pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data),
	GFP_KERNEL);
	if (!pm800_data) {
	dev_err(&pdev->dev, "Failed to allocate pm800_regualtors");
	return -ENOMEM;
	}

	pm800_data->map = chip->subchip->regmap_power;
	pm800_data->chip = chip;

	platform_set_drvdata(pdev, pm800_data);

	for (i = 0; i < PM800_ID_RG_MAX; i++) {
	if (!pdata \|\| pdata->num_regulators == 0)
	init_data = pm800_regulator_matches[i].init_data;
	else
	init_data = pdata->regulators[i];
	if (!init_data)
	continue;
	info = pm800_regulator_matches[i].driver_data;
	config.dev = &pdev->dev;
	config.init_data = init_data;
	config.driver_data = info;
	config.regmap = pm800_data->map;
	config.of_node = pm800_regulator_matches[i].of_node;

	pm800_data->regulators[i] =
	regulator_register(&info->desc, &config);
	if (IS_ERR(pm800_data->regulators[i])) {
	ret = PTR_ERR(pm800_data->regulators[i]);
	dev_err(&pdev->dev, "Failed to register %s\n",
	info->desc.name);

	while (--i >= 0)
	regulator_unregister(pm800_data->regulators[i]);

	return ret;
	}
	}

	return 0;
	}

	static int pm800_regulator_remove(struct platform_device *pdev)
	{
	struct pm800_regulators *pm800_data = platform_get_drvdata(pdev);
	int i;

	for (i = 0; i < PM800_ID_RG_MAX; i++)
	regulator_unregister(pm800_data->regulators[i]);

	return 0;
	}

	static struct platform_driver pm800_regulator_driver = {
	.driver = {
	.name = "88pm80x-regulator",
	.owner = THIS_MODULE,
	},
	.probe = pm800_regulator_probe,
	.remove = pm800_regulator_remove,
	};

	module_platform_driver(pm800_regulator_driver);

	MODULE_LICENSE("GPL");
	MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>");
	MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC");
	MODULE_ALIAS("platform:88pm800-regulator");