drivers/regulator/tps65023-regulator.c - kernel/common.git - Git at Google

 /*
  * tps65023-regulator.c
  *
  * Supports TPS65023 Regulator
  *
  * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation version 2.
  *
  * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
  * whether express or implied; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  */

 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/regmap.h>

 /* Register definitions */
 #define	TPS65023_REG_VERSION		0
 #define	TPS65023_REG_PGOODZ		1
 #define	TPS65023_REG_MASK		2
 #define	TPS65023_REG_REG_CTRL		3
 #define	TPS65023_REG_CON_CTRL		4
 #define	TPS65023_REG_CON_CTRL2		5
 #define	TPS65023_REG_DEF_CORE		6
 #define	TPS65023_REG_DEFSLEW		7
 #define	TPS65023_REG_LDO_CTRL		8

 /* PGOODZ bitfields */
 #define	TPS65023_PGOODZ_PWRFAILZ	BIT(7)
 #define	TPS65023_PGOODZ_LOWBATTZ	BIT(6)
 #define	TPS65023_PGOODZ_VDCDC1		BIT(5)
 #define	TPS65023_PGOODZ_VDCDC2		BIT(4)
 #define	TPS65023_PGOODZ_VDCDC3		BIT(3)
 #define	TPS65023_PGOODZ_LDO2		BIT(2)
 #define	TPS65023_PGOODZ_LDO1		BIT(1)

 /* MASK bitfields */
 #define	TPS65023_MASK_PWRFAILZ		BIT(7)
 #define	TPS65023_MASK_LOWBATTZ		BIT(6)
 #define	TPS65023_MASK_VDCDC1		BIT(5)
 #define	TPS65023_MASK_VDCDC2		BIT(4)
 #define	TPS65023_MASK_VDCDC3		BIT(3)
 #define	TPS65023_MASK_LDO2		BIT(2)
 #define	TPS65023_MASK_LDO1		BIT(1)

 /* REG_CTRL bitfields */
 #define TPS65023_REG_CTRL_VDCDC1_EN	BIT(5)
 #define TPS65023_REG_CTRL_VDCDC2_EN	BIT(4)
 #define TPS65023_REG_CTRL_VDCDC3_EN	BIT(3)
 #define TPS65023_REG_CTRL_LDO2_EN	BIT(2)
 #define TPS65023_REG_CTRL_LDO1_EN	BIT(1)

 /* REG_CTRL2 bitfields */
 #define TPS65023_REG_CTRL2_GO		BIT(7)
 #define TPS65023_REG_CTRL2_CORE_ADJ	BIT(6)
 #define TPS65023_REG_CTRL2_DCDC2	BIT(2)
 #define TPS65023_REG_CTRL2_DCDC1	BIT(1)
 #define TPS65023_REG_CTRL2_DCDC3	BIT(0)

 /* Number of step-down converters available */
 #define TPS65023_NUM_DCDC		3
 /* Number of LDO voltage regulators  available */
 #define TPS65023_NUM_LDO		2
 /* Number of total regulators available */
 #define TPS65023_NUM_REGULATOR	(TPS65023_NUM_DCDC + TPS65023_NUM_LDO)

 /* DCDCs */
 #define TPS65023_DCDC_1			0
 #define TPS65023_DCDC_2			1
 #define TPS65023_DCDC_3			2
 /* LDOs */
 #define TPS65023_LDO_1			3
 #define TPS65023_LDO_2			4

 #define TPS65023_MAX_REG_ID		TPS65023_LDO_2

 #define TPS65023_REGULATOR_DCDC(_num, _t, _em)			\
 	{							\
 		.name		= "VDCDC"#_num,			\
 		.of_match	= of_match_ptr("VDCDC"#_num),	\
 		.regulators_node = of_match_ptr("regulators"),	\
 		.id		= TPS65023_DCDC_##_num,		\
 		.n_voltages     = ARRAY_SIZE(_t),		\
 		.ops		= &tps65023_dcdc_ops,		\
 		.type		= REGULATOR_VOLTAGE,		\
 		.owner		= THIS_MODULE,			\
 		.volt_table	= _t,				\
 		.vsel_reg	= TPS65023_REG_DEF_CORE,	\
 		.vsel_mask	= ARRAY_SIZE(_t) - 1,		\
 		.enable_mask	= _em,				\
 		.enable_reg	= TPS65023_REG_REG_CTRL,	\
 		.apply_reg	= TPS65023_REG_CON_CTRL2,	\
 		.apply_bit	= TPS65023_REG_CTRL2_GO,	\
 	}							\

 #define TPS65023_REGULATOR_LDO(_num, _t, _vm)			\
 	{							\
 		.name		= "LDO"#_num,			\
 		.of_match	= of_match_ptr("LDO"#_num),	\
 		.regulators_node = of_match_ptr("regulators"),	\
 		.id		= TPS65023_LDO_##_num,		\
 		.n_voltages     = ARRAY_SIZE(_t),		\
 		.ops		= &tps65023_ldo_ops,		\
 		.type		= REGULATOR_VOLTAGE,		\
 		.owner		= THIS_MODULE,			\
 		.volt_table	= _t,				\
 		.vsel_reg	= TPS65023_REG_LDO_CTRL,	\
 		.vsel_mask	= _vm,				\
 		.enable_mask	= 1 << (_num),			\
 		.enable_reg	= TPS65023_REG_REG_CTRL,	\
 	}							\

 /* Supported voltage values for regulators */
 static const unsigned int VCORE_VSEL_table[] = {
 	800000, 825000, 850000, 875000,
 	900000, 925000, 950000, 975000,
 	1000000, 1025000, 1050000, 1075000,
 	1100000, 1125000, 1150000, 1175000,
 	1200000, 1225000, 1250000, 1275000,
 	1300000, 1325000, 1350000, 1375000,
 	1400000, 1425000, 1450000, 1475000,
 	1500000, 1525000, 1550000, 1600000,
 };

 static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
 	3300000,
 };

 static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
 	1800000,
 };

 /* Supported voltage values for LDO regulators for tps65020 */
 static const unsigned int TPS65020_LDO_VSEL_table[] = {
 	1000000, 1050000, 1100000, 1300000,
 	1800000, 2500000, 3000000, 3300000,
 };

 /* Supported voltage values for LDO regulators
  * for tps65021 and tps65023 */
 static const unsigned int TPS65023_LDO1_VSEL_table[] = {
 	1000000, 1100000, 1300000, 1800000,
 	2200000, 2600000, 2800000, 3150000,
 };

 static const unsigned int TPS65023_LDO2_VSEL_table[] = {
 	1050000, 1200000, 1300000, 1800000,
 	2500000, 2800000, 3000000, 3300000,
 };

 /* PMIC details */
 struct tps_pmic {
 	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
 	const struct tps_driver_data *driver_data;
 	struct regmap *regmap;
 };

 /* Struct passed as driver data */
 struct tps_driver_data {
 	const struct regulator_desc *desc;
 	u8 core_regulator;
 };

 static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct tps_pmic *tps = rdev_get_drvdata(dev);
 	int dcdc = rdev_get_id(dev);

 	if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
 		return -EINVAL;

 	if (dcdc != tps->driver_data->core_regulator)
 		return 0;

 	return regulator_get_voltage_sel_regmap(dev);
 }

 static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
 					 unsigned selector)
 {
 	struct tps_pmic *tps = rdev_get_drvdata(dev);
 	int dcdc = rdev_get_id(dev);

 	if (dcdc != tps->driver_data->core_regulator)
 		return -EINVAL;

 	return regulator_set_voltage_sel_regmap(dev, selector);
 }

 /* Operations permitted on VDCDCx */
 static const struct regulator_ops tps65023_dcdc_ops = {
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
 	.get_voltage_sel = tps65023_dcdc_get_voltage_sel,
 	.set_voltage_sel = tps65023_dcdc_set_voltage_sel,
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_ascend,
 };

 /* Operations permitted on LDOx */
 static const struct regulator_ops tps65023_ldo_ops = {
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_ascend,
 };

 static const struct regmap_config tps65023_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 };

 static const struct regulator_desc tps65020_regulators[] = {
 	TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
 	TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
 	TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
 	TPS65023_REGULATOR_LDO(1, TPS65020_LDO_VSEL_table, 0x07),
 	TPS65023_REGULATOR_LDO(2, TPS65020_LDO_VSEL_table, 0x70),
 };

 static const struct regulator_desc tps65021_regulators[] = {
 	TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
 	TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
 	TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
 	TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
 	TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
 };

 static const struct regulator_desc tps65023_regulators[] = {
 	TPS65023_REGULATOR_DCDC(1, VCORE_VSEL_table, 0x20),
 	TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_3300000_VSEL_table, 0x10),
 	TPS65023_REGULATOR_DCDC(3, DCDC_FIXED_1800000_VSEL_table, 0x08),
 	TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
 	TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
 };

 static struct tps_driver_data tps65020_drv_data = {
 	.desc = tps65020_regulators,
 	.core_regulator = TPS65023_DCDC_3,
 };

 static struct tps_driver_data tps65021_drv_data = {
 	.desc = tps65021_regulators,
 	.core_regulator = TPS65023_DCDC_3,
 };

 static struct tps_driver_data tps65023_drv_data = {
 	.desc = tps65023_regulators,
 	.core_regulator = TPS65023_DCDC_1,
 };

 static int tps_65023_probe(struct i2c_client *client,
 				     const struct i2c_device_id *id)
 {
 	struct regulator_init_data *init_data = dev_get_platdata(&client->dev);
 	struct regulator_config config = { };
 	struct tps_pmic *tps;
 	int i;
 	int error;

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

 	tps->driver_data = (struct tps_driver_data *)id->driver_data;

 	tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
 	if (IS_ERR(tps->regmap)) {
 		error = PTR_ERR(tps->regmap);
 		dev_err(&client->dev, "Failed to allocate register map: %d\n",
 			error);
 		return error;
 	}

 	/* common for all regulators */
 	config.dev = &client->dev;
 	config.driver_data = tps;
 	config.regmap = tps->regmap;

 	for (i = 0; i < TPS65023_NUM_REGULATOR; i++) {
 		if (init_data)
 			config.init_data = &init_data[i];

 		/* Register the regulators */
 		tps->rdev[i] = devm_regulator_register(&client->dev,
 					&tps->driver_data->desc[i], &config);
 		if (IS_ERR(tps->rdev[i])) {
 			dev_err(&client->dev, "failed to register %s\n",
 				id->name);
 			return PTR_ERR(tps->rdev[i]);
 		}
 	}

 	i2c_set_clientdata(client, tps);

 	/* Enable setting output voltage by I2C */
 	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
 			   TPS65023_REG_CTRL2_CORE_ADJ, 0);

 	return 0;
 }

 static const struct of_device_id tps65023_of_match[] = {
 	{ .compatible = "ti,tps65020", .data = &tps65020_drv_data},
 	{ .compatible = "ti,tps65021", .data = &tps65021_drv_data},
 	{ .compatible = "ti,tps65023", .data = &tps65023_drv_data},
 	{},
 };
 MODULE_DEVICE_TABLE(of, tps65023_of_match);

 static const struct i2c_device_id tps_65023_id[] = {
 	{
 		.name = "tps65023",
 		.driver_data = (kernel_ulong_t)&tps65023_drv_data
 	}, {
 		.name = "tps65021",
 		.driver_data = (kernel_ulong_t)&tps65021_drv_data
 	}, {
 		.name = "tps65020",
 		.driver_data = (kernel_ulong_t)&tps65020_drv_data
 	},
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, tps_65023_id);

 static struct i2c_driver tps_65023_i2c_driver = {
 	.driver = {
 		.name = "tps65023",
 		.of_match_table = of_match_ptr(tps65023_of_match),
 	},
 	.probe = tps_65023_probe,
 	.id_table = tps_65023_id,
 };

 static int __init tps_65023_init(void)
 {
 	return i2c_add_driver(&tps_65023_i2c_driver);
 }
 subsys_initcall(tps_65023_init);

 static void __exit tps_65023_cleanup(void)
 {
 	i2c_del_driver(&tps_65023_i2c_driver);
 }
 module_exit(tps_65023_cleanup);

 MODULE_AUTHOR("Texas Instruments");
 MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
 MODULE_LICENSE("GPL v2");
	/*
	* tps65023-regulator.c
	*
	* Supports TPS65023 Regulator
	*
	* Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation version 2.
	*
	* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
	* whether express or implied; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*/

	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/platform_device.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/i2c.h>
	#include <linux/slab.h>
	#include <linux/regmap.h>

	/* Register definitions */
	#define TPS65023_REG_VERSION 0
	#define TPS65023_REG_PGOODZ 1
	#define TPS65023_REG_MASK 2
	#define TPS65023_REG_REG_CTRL 3
	#define TPS65023_REG_CON_CTRL 4
	#define TPS65023_REG_CON_CTRL2 5
	#define TPS65023_REG_DEF_CORE 6
	#define TPS65023_REG_DEFSLEW 7
	#define TPS65023_REG_LDO_CTRL 8

	/* PGOODZ bitfields */
	#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
	#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
	#define TPS65023_PGOODZ_VDCDC1 BIT(5)
	#define TPS65023_PGOODZ_VDCDC2 BIT(4)
	#define TPS65023_PGOODZ_VDCDC3 BIT(3)
	#define TPS65023_PGOODZ_LDO2 BIT(2)
	#define TPS65023_PGOODZ_LDO1 BIT(1)

	/* MASK bitfields */
	#define TPS65023_MASK_PWRFAILZ BIT(7)
	#define TPS65023_MASK_LOWBATTZ BIT(6)
	#define TPS65023_MASK_VDCDC1 BIT(5)
	#define TPS65023_MASK_VDCDC2 BIT(4)
	#define TPS65023_MASK_VDCDC3 BIT(3)
	#define TPS65023_MASK_LDO2 BIT(2)
	#define TPS65023_MASK_LDO1 BIT(1)

	/* REG_CTRL bitfields */
	#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
	#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
	#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
	#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
	#define TPS65023_REG_CTRL_LDO1_EN BIT(1)

	/* REG_CTRL2 bitfields */
	#define TPS65023_REG_CTRL2_GO BIT(7)
	#define TPS65023_REG_CTRL2_CORE_ADJ BIT(6)
	#define TPS65023_REG_CTRL2_DCDC2 BIT(2)
	#define TPS65023_REG_CTRL2_DCDC1 BIT(1)
	#define TPS65023_REG_CTRL2_DCDC3 BIT(0)

	/* Number of step-down converters available */
	#define TPS65023_NUM_DCDC 3
	/* Number of LDO voltage regulators available */
	#define TPS65023_NUM_LDO 2
	/* Number of total regulators available */
	#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)

	/* DCDCs */
	#define TPS65023_DCDC_1 0
	#define TPS65023_DCDC_2 1
	#define TPS65023_DCDC_3 2
	/* LDOs */
	#define TPS65023_LDO_1 3
	#define TPS65023_LDO_2 4

	#define TPS65023_MAX_REG_ID TPS65023_LDO_2

	#define TPS65023_REGULATOR_DCDC(_num, _t, _em) \
	{ \
	.name = "VDCDC"#_num, \
	.of_match = of_match_ptr("VDCDC"#_num), \
	.regulators_node = of_match_ptr("regulators"), \
	.id = TPS65023_DCDC_##_num, \
	.n_voltages = ARRAY_SIZE(_t), \
	.ops = &tps65023_dcdc_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	.volt_table = _t, \
	.vsel_reg = TPS65023_REG_DEF_CORE, \
	.vsel_mask = ARRAY_SIZE(_t) - 1, \
	.enable_mask = _em, \
	.enable_reg = TPS65023_REG_REG_CTRL, \
	.apply_reg = TPS65023_REG_CON_CTRL2, \
	.apply_bit = TPS65023_REG_CTRL2_GO, \
	} \

	#define TPS65023_REGULATOR_LDO(_num, _t, _vm) \
	{ \
	.name = "LDO"#_num, \
	.of_match = of_match_ptr("LDO"#_num), \
	.regulators_node = of_match_ptr("regulators"), \
	.id = TPS65023_LDO_##_num, \
	.n_voltages = ARRAY_SIZE(_t), \
	.ops = &tps65023_ldo_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	.volt_table = _t, \
	.vsel_reg = TPS65023_REG_LDO_CTRL, \
	.vsel_mask = _vm, \
	.enable_mask = 1 << (_num), \
	.enable_reg = TPS65023_REG_REG_CTRL, \
	} \

	/* Supported voltage values for regulators */
	static const unsigned int VCORE_VSEL_table[] = {
	800000, 825000, 850000, 875000,
	900000, 925000, 950000, 975000,
	1000000, 1025000, 1050000, 1075000,
	1100000, 1125000, 1150000, 1175000,
	1200000, 1225000, 1250000, 1275000,
	1300000, 1325000, 1350000, 1375000,
	1400000, 1425000, 1450000, 1475000,
	1500000, 1525000, 1550000, 1600000,
	};

	static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
	3300000,
	};

	static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
	1800000,
	};

	/* Supported voltage values for LDO regulators for tps65020 */
	static const unsigned int TPS65020_LDO_VSEL_table[] = {
	1000000, 1050000, 1100000, 1300000,
	1800000, 2500000, 3000000, 3300000,
	};

	/* Supported voltage values for LDO regulators
	* for tps65021 and tps65023 */
	static const unsigned int TPS65023_LDO1_VSEL_table[] = {
	1000000, 1100000, 1300000, 1800000,
	2200000, 2600000, 2800000, 3150000,
	};

	static const unsigned int TPS65023_LDO2_VSEL_table[] = {
	1050000, 1200000, 1300000, 1800000,
	2500000, 2800000, 3000000, 3300000,
	};

	/* PMIC details */
	struct tps_pmic {
	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
	const struct tps_driver_data *driver_data;
	struct regmap *regmap;
	};

	/* Struct passed as driver data */
	struct tps_driver_data {
	const struct regulator_desc *desc;
	u8 core_regulator;
	};

	static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
	{
	struct tps_pmic *tps = rdev_get_drvdata(dev);
	int dcdc = rdev_get_id(dev);

	if (dcdc < TPS65023_DCDC_1 \|\| dcdc > TPS65023_DCDC_3)
	return -EINVAL;

	if (dcdc != tps->driver_data->core_regulator)
	return 0;

	return regulator_get_voltage_sel_regmap(dev);
	}

	static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
	unsigned selector)
	{
	struct tps_pmic *tps = rdev_get_drvdata(dev);
	int dcdc = rdev_get_id(dev);

	if (dcdc != tps->driver_data->core_regulator)
	return -EINVAL;

	return regulator_set_voltage_sel_regmap(dev, selector);
	}

	/* Operations permitted on VDCDCx */
	static const struct regulator_ops tps65023_dcdc_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.get_voltage_sel = tps65023_dcdc_get_voltage_sel,
	.set_voltage_sel = tps65023_dcdc_set_voltage_sel,
	.list_voltage = regulator_list_voltage_table,
	.map_voltage = regulator_map_voltage_ascend,
	};

	/* Operations permitted on LDOx */
	static const struct regulator_ops tps65023_ldo_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_table,
	.map_voltage = regulator_map_voltage_ascend,
	};

	static const struct regmap_config tps65023_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	};

	static const struct regulator_desc tps65020_regulators[] = {
	TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
	TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
	TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
	TPS65023_REGULATOR_LDO(1, TPS65020_LDO_VSEL_table, 0x07),
	TPS65023_REGULATOR_LDO(2, TPS65020_LDO_VSEL_table, 0x70),
	};

	static const struct regulator_desc tps65021_regulators[] = {
	TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
	TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
	TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
	TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
	TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
	};

	static const struct regulator_desc tps65023_regulators[] = {
	TPS65023_REGULATOR_DCDC(1, VCORE_VSEL_table, 0x20),
	TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_3300000_VSEL_table, 0x10),
	TPS65023_REGULATOR_DCDC(3, DCDC_FIXED_1800000_VSEL_table, 0x08),
	TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
	TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
	};

	static struct tps_driver_data tps65020_drv_data = {
	.desc = tps65020_regulators,
	.core_regulator = TPS65023_DCDC_3,
	};

	static struct tps_driver_data tps65021_drv_data = {
	.desc = tps65021_regulators,
	.core_regulator = TPS65023_DCDC_3,
	};

	static struct tps_driver_data tps65023_drv_data = {
	.desc = tps65023_regulators,
	.core_regulator = TPS65023_DCDC_1,
	};

	static int tps_65023_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
	{
	struct regulator_init_data *init_data = dev_get_platdata(&client->dev);
	struct regulator_config config = { };
	struct tps_pmic *tps;
	int i;
	int error;

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

	tps->driver_data = (struct tps_driver_data *)id->driver_data;

	tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
	if (IS_ERR(tps->regmap)) {
	error = PTR_ERR(tps->regmap);
	dev_err(&client->dev, "Failed to allocate register map: %d\n",
	error);
	return error;
	}

	/* common for all regulators */
	config.dev = &client->dev;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	for (i = 0; i < TPS65023_NUM_REGULATOR; i++) {
	if (init_data)
	config.init_data = &init_data[i];

	/* Register the regulators */
	tps->rdev[i] = devm_regulator_register(&client->dev,
	&tps->driver_data->desc[i], &config);
	if (IS_ERR(tps->rdev[i])) {
	dev_err(&client->dev, "failed to register %s\n",
	id->name);
	return PTR_ERR(tps->rdev[i]);
	}
	}

	i2c_set_clientdata(client, tps);

	/* Enable setting output voltage by I2C */
	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
	TPS65023_REG_CTRL2_CORE_ADJ, 0);

	return 0;
	}

	static const struct of_device_id tps65023_of_match[] = {
	{ .compatible = "ti,tps65020", .data = &tps65020_drv_data},
	{ .compatible = "ti,tps65021", .data = &tps65021_drv_data},
	{ .compatible = "ti,tps65023", .data = &tps65023_drv_data},
	{},
	};
	MODULE_DEVICE_TABLE(of, tps65023_of_match);

	static const struct i2c_device_id tps_65023_id[] = {
	{
	.name = "tps65023",
	.driver_data = (kernel_ulong_t)&tps65023_drv_data
	}, {
	.name = "tps65021",
	.driver_data = (kernel_ulong_t)&tps65021_drv_data
	}, {
	.name = "tps65020",
	.driver_data = (kernel_ulong_t)&tps65020_drv_data
	},
	{ },
	};
	MODULE_DEVICE_TABLE(i2c, tps_65023_id);

	static struct i2c_driver tps_65023_i2c_driver = {
	.driver = {
	.name = "tps65023",
	.of_match_table = of_match_ptr(tps65023_of_match),
	},
	.probe = tps_65023_probe,
	.id_table = tps_65023_id,
	};

	static int __init tps_65023_init(void)
	{
	return i2c_add_driver(&tps_65023_i2c_driver);
	}
	subsys_initcall(tps_65023_init);

	static void __exit tps_65023_cleanup(void)
	{
	i2c_del_driver(&tps_65023_i2c_driver);
	}
	module_exit(tps_65023_cleanup);

	MODULE_AUTHOR("Texas Instruments");
	MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
	MODULE_LICENSE("GPL v2");