[mirror_ubuntu-artful-kernel.git] / drivers / regulator / tps65023-regulator.c

/*
 * 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

/* 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,
};

/* Regulator specific details */
struct tps_info {
	const char *name;
	u8 table_len;
	const unsigned int *table;
};

/* PMIC details */
struct tps_pmic {
	struct regulator_desc desc[TPS65023_NUM_REGULATOR];
	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
	const struct tps_info *info[TPS65023_NUM_REGULATOR];
	struct regmap *regmap;
	u8 core_regulator;
};

/* Struct passed as driver data */
struct tps_driver_data {
	const struct tps_info *info;
	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->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->core_regulator)
		return -EINVAL;

	return regulator_set_voltage_sel_regmap(dev, selector);
}

/* Operations permitted on VDCDCx */
static 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 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 struct regmap_config tps65023_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
};

static int tps_65023_probe(struct i2c_client *client,
				     const struct i2c_device_id *id)
{
	const struct tps_driver_data *drv_data = (void *)id->driver_data;
	const struct tps_info *info = drv_data->info;
	struct regulator_config config = { };
	struct regulator_init_data *init_data;
	struct regulator_dev *rdev;
	struct tps_pmic *tps;
	int i;
	int error;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;

	/**
	 * init_data points to array of regulator_init structures
	 * coming from the board-evm file.
	 */
	init_data = client->dev.platform_data;
	if (!init_data)
		return -EIO;

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

	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 */
	tps->core_regulator = drv_data->core_regulator;

	for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
		/* Store regulator specific information */
		tps->info[i] = info;

		tps->desc[i].name = info->name;
		tps->desc[i].id = i;
		tps->desc[i].n_voltages = info->table_len;
		tps->desc[i].volt_table = info->table;
		tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
					&tps65023_ldo_ops : &tps65023_dcdc_ops);
		tps->desc[i].type = REGULATOR_VOLTAGE;
		tps->desc[i].owner = THIS_MODULE;

		tps->desc[i].enable_reg = TPS65023_REG_REG_CTRL;
		switch (i) {
		case TPS65023_LDO_1:
			tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
			tps->desc[i].vsel_mask = 0x07;
			tps->desc[i].enable_mask = 1 << 1;
			break;
		case TPS65023_LDO_2:
			tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
			tps->desc[i].vsel_mask = 0x70;
			tps->desc[i].enable_mask = 1 << 2;
			break;
		default: /* DCDCx */
			tps->desc[i].enable_mask =
					1 << (TPS65023_NUM_REGULATOR - i);
			tps->desc[i].vsel_reg = TPS65023_REG_DEF_CORE;
			tps->desc[i].vsel_mask = info->table_len - 1;
			tps->desc[i].apply_reg = TPS65023_REG_CON_CTRL2;
			tps->desc[i].apply_bit = TPS65023_REG_CTRL2_GO;
		}

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

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

		/* Save regulator for cleanup */
		tps->rdev[i] = rdev;
	}

	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, TPS65023_REG_CTRL2_CORE_ADJ);

	return 0;

 fail:
	while (--i >= 0)
		regulator_unregister(tps->rdev[i]);
	return error;
}

static int tps_65023_remove(struct i2c_client *client)
{
	struct tps_pmic *tps = i2c_get_clientdata(client);
	int i;

	for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
		regulator_unregister(tps->rdev[i]);
	return 0;
}

static const struct tps_info tps65020_regs[] = {
	{
		.name = "VDCDC1",
		.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
		.table = DCDC_FIXED_3300000_VSEL_table,
	},
	{
		.name = "VDCDC2",
		.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
		.table = DCDC_FIXED_1800000_VSEL_table,
	},
	{
		.name = "VDCDC3",
		.table_len = ARRAY_SIZE(VCORE_VSEL_table),
		.table = VCORE_VSEL_table,
	},
	{
		.name = "LDO1",
		.table_len = ARRAY_SIZE(TPS65020_LDO_VSEL_table),
		.table = TPS65020_LDO_VSEL_table,
	},
	{
		.name = "LDO2",
		.table_len = ARRAY_SIZE(TPS65020_LDO_VSEL_table),
		.table = TPS65020_LDO_VSEL_table,
	},
};

static const struct tps_info tps65021_regs[] = {
	{
		.name = "VDCDC1",
		.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
		.table = DCDC_FIXED_3300000_VSEL_table,
	},
	{
		.name = "VDCDC2",
		.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
		.table = DCDC_FIXED_1800000_VSEL_table,
	},
	{
		.name = "VDCDC3",
		.table_len = ARRAY_SIZE(VCORE_VSEL_table),
		.table = VCORE_VSEL_table,
	},
	{
		.name = "LDO1",
		.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
		.table = TPS65023_LDO1_VSEL_table,
	},
	{
		.name = "LDO2",
		.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
		.table = TPS65023_LDO2_VSEL_table,
	},
};

static const struct tps_info tps65023_regs[] = {
	{
		.name = "VDCDC1",
		.table_len = ARRAY_SIZE(VCORE_VSEL_table),
		.table = VCORE_VSEL_table,
	},
	{
		.name = "VDCDC2",
		.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
		.table = DCDC_FIXED_3300000_VSEL_table,
	},
	{
		.name = "VDCDC3",
		.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
		.table = DCDC_FIXED_1800000_VSEL_table,
	},
	{
		.name = "LDO1",
		.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
		.table = TPS65023_LDO1_VSEL_table,
	},
	{
		.name = "LDO2",
		.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
		.table = TPS65023_LDO2_VSEL_table,
	},
};

static struct tps_driver_data tps65020_drv_data = {
	.info = tps65020_regs,
	.core_regulator = TPS65023_DCDC_3,
};

static struct tps_driver_data tps65021_drv_data = {
	.info = tps65021_regs,
	.core_regulator = TPS65023_DCDC_3,
};

static struct tps_driver_data tps65023_drv_data = {
	.info = tps65023_regs,
	.core_regulator = TPS65023_DCDC_1,
};

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

MODULE_DEVICE_TABLE(i2c, tps_65023_id);

static struct i2c_driver tps_65023_i2c_driver = {
	.driver = {
		.name = "tps65023",
		.owner = THIS_MODULE,
	},
	.probe = tps_65023_probe,
	.remove = tps_65023_remove,
	.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");
Commit	Line	Data
30e6599d AA	1	/*
	2	* tps65023-regulator.c
	3	*
	4	* Supports TPS65023 Regulator
	5	*
	6	* Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation version 2.
	11	*
	12	* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
	13	* whether express or implied; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*/
	17
	18	#include <linux/kernel.h>
	19	#include <linux/module.h>
	20	#include <linux/init.h>
	21	#include <linux/err.h>
	22	#include <linux/platform_device.h>
	23	#include <linux/regulator/driver.h>
	24	#include <linux/regulator/machine.h>
	25	#include <linux/i2c.h>
5a0e3ad6	26	#include <linux/slab.h>
90923351	27	#include <linux/regmap.h>
30e6599d AA	28
	29	/* Register definitions */
	30	#define TPS65023_REG_VERSION 0
	31	#define TPS65023_REG_PGOODZ 1
	32	#define TPS65023_REG_MASK 2
	33	#define TPS65023_REG_REG_CTRL 3
	34	#define TPS65023_REG_CON_CTRL 4
	35	#define TPS65023_REG_CON_CTRL2 5
	36	#define TPS65023_REG_DEF_CORE 6
	37	#define TPS65023_REG_DEFSLEW 7
	38	#define TPS65023_REG_LDO_CTRL 8
	39
	40	/* PGOODZ bitfields */
	41	#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
	42	#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
	43	#define TPS65023_PGOODZ_VDCDC1 BIT(5)
	44	#define TPS65023_PGOODZ_VDCDC2 BIT(4)
	45	#define TPS65023_PGOODZ_VDCDC3 BIT(3)
	46	#define TPS65023_PGOODZ_LDO2 BIT(2)
	47	#define TPS65023_PGOODZ_LDO1 BIT(1)
	48
	49	/* MASK bitfields */
	50	#define TPS65023_MASK_PWRFAILZ BIT(7)
	51	#define TPS65023_MASK_LOWBATTZ BIT(6)
	52	#define TPS65023_MASK_VDCDC1 BIT(5)
	53	#define TPS65023_MASK_VDCDC2 BIT(4)
	54	#define TPS65023_MASK_VDCDC3 BIT(3)
	55	#define TPS65023_MASK_LDO2 BIT(2)
	56	#define TPS65023_MASK_LDO1 BIT(1)
	57
	58	/* REG_CTRL bitfields */
	59	#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
	60	#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
	61	#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
	62	#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
	63	#define TPS65023_REG_CTRL_LDO1_EN BIT(1)
	64
f068ad8c MF	65	/* REG_CTRL2 bitfields */
	66	#define TPS65023_REG_CTRL2_GO BIT(7)
	67	#define TPS65023_REG_CTRL2_CORE_ADJ BIT(6)
	68	#define TPS65023_REG_CTRL2_DCDC2 BIT(2)
	69	#define TPS65023_REG_CTRL2_DCDC1 BIT(1)
	70	#define TPS65023_REG_CTRL2_DCDC3 BIT(0)
	71
30e6599d AA	72	/* Number of step-down converters available */
	73	#define TPS65023_NUM_DCDC 3
	74	/* Number of LDO voltage regulators available */
	75	#define TPS65023_NUM_LDO 2
	76	/* Number of total regulators available */
	77	#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
	78
	79	/* DCDCs */
	80	#define TPS65023_DCDC_1 0
	81	#define TPS65023_DCDC_2 1
	82	#define TPS65023_DCDC_3 2
	83	/* LDOs */
	84	#define TPS65023_LDO_1 3
	85	#define TPS65023_LDO_2 4
	86
	87	#define TPS65023_MAX_REG_ID TPS65023_LDO_2
	88
	89	/* Supported voltage values for regulators */
ba3bd8a3 AL	90	static const unsigned int VCORE_VSEL_table[] = {
	91	800000, 825000, 850000, 875000,
	92	900000, 925000, 950000, 975000,
	93	1000000, 1025000, 1050000, 1075000,
	94	1100000, 1125000, 1150000, 1175000,
	95	1200000, 1225000, 1250000, 1275000,
	96	1300000, 1325000, 1350000, 1375000,
	97	1400000, 1425000, 1450000, 1475000,
	98	1500000, 1525000, 1550000, 1600000,
	99	};
	100
	101	static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
	102	3300000,
	103	};
	104
	105	static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
	106	1800000,
30e6599d AA	107	};
30e6599d AA	108
437afd2a	109	/* Supported voltage values for LDO regulators for tps65020 */
2040541a	110	static const unsigned int TPS65020_LDO_VSEL_table[] = {
ba3bd8a3 AL	111	1000000, 1050000, 1100000, 1300000,
ba3bd8a3 AL	112	1800000, 2500000, 3000000, 3300000,
437afd2a	113	};
1c3ede05 MF	114
	115	/* Supported voltage values for LDO regulators
	116	* for tps65021 and tps65023 */
ba3bd8a3 AL	117	static const unsigned int TPS65023_LDO1_VSEL_table[] = {
	118	1000000, 1100000, 1300000, 1800000,
	119	2200000, 2600000, 2800000, 3150000,
30e6599d AA	120	};
30e6599d AA	121
ba3bd8a3 AL	122	static const unsigned int TPS65023_LDO2_VSEL_table[] = {
	123	1050000, 1200000, 1300000, 1800000,
	124	2500000, 2800000, 3000000, 3300000,
30e6599d AA	125	};
30e6599d AA	126
30e6599d AA	127	/* Regulator specific details */
	128	struct tps_info {
	129	const char *name;
30e6599d	130	u8 table_len;
ba3bd8a3	131	const unsigned int *table;
30e6599d AA	132	};
	133
	134	/* PMIC details */
	135	struct tps_pmic {
	136	struct regulator_desc desc[TPS65023_NUM_REGULATOR];
30e6599d AA	137	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
30e6599d AA	138	const struct tps_info *info[TPS65023_NUM_REGULATOR];
90923351	139	struct regmap *regmap;
1c3ede05 MF	140	u8 core_regulator;
	141	};
	142
	143	/* Struct passed as driver data */
	144	struct tps_driver_data {
	145	const struct tps_info *info;
	146	u8 core_regulator;
30e6599d AA	147	};
30e6599d AA	148
a133829e	149	static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
30e6599d AA	150	{
30e6599d AA	151	struct tps_pmic *tps = rdev_get_drvdata(dev);
46bcb006	152	int dcdc = rdev_get_id(dev);
30e6599d AA	153
	154	if (dcdc < TPS65023_DCDC_1 \|\| dcdc > TPS65023_DCDC_3)
	155	return -EINVAL;
	156
46bcb006	157	if (dcdc != tps->core_regulator)
a133829e	158	return 0;
46bcb006 AL	159
46bcb006 AL	160	return regulator_get_voltage_sel_regmap(dev);
30e6599d AA	161	}
30e6599d AA	162
7061873f AL	163	static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
7061873f AL	164	unsigned selector)
30e6599d AA	165	{
	166	struct tps_pmic *tps = rdev_get_drvdata(dev);
	167	int dcdc = rdev_get_id(dev);
30e6599d	168
1c3ede05	169	if (dcdc != tps->core_regulator)
30e6599d	170	return -EINVAL;
30e6599d	171
46bcb006	172	return regulator_set_voltage_sel_regmap(dev, selector);
30e6599d AA	173	}
30e6599d AA	174
30e6599d AA	175	/* Operations permitted on VDCDCx */
30e6599d AA	176	static struct regulator_ops tps65023_dcdc_ops = {
ee7b1914 AL	177	.is_enabled = regulator_is_enabled_regmap,
	178	.enable = regulator_enable_regmap,
	179	.disable = regulator_disable_regmap,
a133829e	180	.get_voltage_sel = tps65023_dcdc_get_voltage_sel,
7061873f	181	.set_voltage_sel = tps65023_dcdc_set_voltage_sel,
ba3bd8a3	182	.list_voltage = regulator_list_voltage_table,
c4bbfbd5	183	.map_voltage = regulator_map_voltage_ascend,
30e6599d AA	184	};
	185
	186	/* Operations permitted on LDOx */
	187	static struct regulator_ops tps65023_ldo_ops = {
ee7b1914 AL	188	.is_enabled = regulator_is_enabled_regmap,
	189	.enable = regulator_enable_regmap,
	190	.disable = regulator_disable_regmap,
e90a8447 AL	191	.get_voltage_sel = regulator_get_voltage_sel_regmap,
e90a8447 AL	192	.set_voltage_sel = regulator_set_voltage_sel_regmap,
ba3bd8a3	193	.list_voltage = regulator_list_voltage_table,
c4bbfbd5	194	.map_voltage = regulator_map_voltage_ascend,
30e6599d AA	195	};
30e6599d AA	196
90923351 MB	197	static struct regmap_config tps65023_regmap_config = {
	198	.reg_bits = 8,
	199	.val_bits = 8,
	200	};
	201
a5023574	202	static int tps_65023_probe(struct i2c_client *client,
54d13ab1	203	const struct i2c_device_id *id)
30e6599d	204	{
1c3ede05 MF	205	const struct tps_driver_data drv_data = (void )id->driver_data;
1c3ede05 MF	206	const struct tps_info *info = drv_data->info;
c172708d	207	struct regulator_config config = { };
30e6599d AA	208	struct regulator_init_data *init_data;
	209	struct regulator_dev *rdev;
	210	struct tps_pmic *tps;
	211	int i;
54d13ab1	212	int error;
30e6599d AA	213
	214	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	215	return -EIO;
	216
	217	/**
	218	* init_data points to array of regulator_init structures
	219	* coming from the board-evm file.
	220	*/
	221	init_data = client->dev.platform_data;
30e6599d AA	222	if (!init_data)
	223	return -EIO;
	224
19a8da21	225	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
30e6599d AA	226	if (!tps)
	227	return -ENOMEM;
	228
19a8da21	229	tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
90923351 MB	230	if (IS_ERR(tps->regmap)) {
	231	error = PTR_ERR(tps->regmap);
	232	dev_err(&client->dev, "Failed to allocate register map: %d\n",
	233	error);
19a8da21	234	return error;
90923351	235	}
30e6599d AA	236
30e6599d AA	237	/* common for all regulators */
1c3ede05	238	tps->core_regulator = drv_data->core_regulator;
30e6599d AA	239
	240	for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
	241	/* Store regulator specific information */
	242	tps->info[i] = info;
	243
	244	tps->desc[i].name = info->name;
77fa44d0	245	tps->desc[i].id = i;
ba3bd8a3 AL	246	tps->desc[i].n_voltages = info->table_len;
ba3bd8a3 AL	247	tps->desc[i].volt_table = info->table;
30e6599d AA	248	tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
	249	&tps65023_ldo_ops : &tps65023_dcdc_ops);
	250	tps->desc[i].type = REGULATOR_VOLTAGE;
	251	tps->desc[i].owner = THIS_MODULE;
	252
ee7b1914	253	tps->desc[i].enable_reg = TPS65023_REG_REG_CTRL;
e90a8447 AL	254	switch (i) {
	255	case TPS65023_LDO_1:
	256	tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
	257	tps->desc[i].vsel_mask = 0x07;
ee7b1914	258	tps->desc[i].enable_mask = 1 << 1;
e90a8447 AL	259	break;
	260	case TPS65023_LDO_2:
	261	tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
	262	tps->desc[i].vsel_mask = 0x70;
ee7b1914	263	tps->desc[i].enable_mask = 1 << 2;
e90a8447 AL	264	break;
e90a8447 AL	265	default: /* DCDCx */
ee7b1914 AL	266	tps->desc[i].enable_mask =
ee7b1914 AL	267	1 << (TPS65023_NUM_REGULATOR - i);
46bcb006 AL	268	tps->desc[i].vsel_reg = TPS65023_REG_DEF_CORE;
	269	tps->desc[i].vsel_mask = info->table_len - 1;
	270	tps->desc[i].apply_reg = TPS65023_REG_CON_CTRL2;
	271	tps->desc[i].apply_bit = TPS65023_REG_CTRL2_GO;
e90a8447	272	}
ee7b1914	273
c172708d MB	274	config.dev = &client->dev;
	275	config.init_data = init_data;
	276	config.driver_data = tps;
ee7b1914	277	config.regmap = tps->regmap;
c172708d	278
30e6599d	279	/* Register the regulators */
c172708d	280	rdev = regulator_register(&tps->desc[i], &config);
30e6599d AA	281	if (IS_ERR(rdev)) {
	282	dev_err(&client->dev, "failed to register %s\n",
	283	id->name);
54d13ab1 DT	284	error = PTR_ERR(rdev);
54d13ab1 DT	285	goto fail;
30e6599d AA	286	}
	287
	288	/* Save regulator for cleanup */
	289	tps->rdev[i] = rdev;
	290	}
	291
	292	i2c_set_clientdata(client, tps);
	293
fc999b83	294	/* Enable setting output voltage by I2C */
43530b69 JC	295	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
43530b69 JC	296	TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ);
fc999b83	297
30e6599d	298	return 0;
54d13ab1 DT	299
	300	fail:
	301	while (--i >= 0)
	302	regulator_unregister(tps->rdev[i]);
54d13ab1	303	return error;
30e6599d AA	304	}
30e6599d AA	305
8dc995f5	306	static int tps_65023_remove(struct i2c_client *client)
30e6599d AA	307	{
	308	struct tps_pmic *tps = i2c_get_clientdata(client);
	309	int i;
	310
	311	for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
	312	regulator_unregister(tps->rdev[i]);
30e6599d AA	313	return 0;
	314	}
	315
437afd2a MF	316	static const struct tps_info tps65020_regs[] = {
	317	{
	318	.name = "VDCDC1",
ba3bd8a3 AL	319	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	320	.table = DCDC_FIXED_3300000_VSEL_table,
437afd2a MF	321	},
	322	{
	323	.name = "VDCDC2",
ba3bd8a3 AL	324	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	325	.table = DCDC_FIXED_1800000_VSEL_table,
437afd2a MF	326	},
	327	{
	328	.name = "VDCDC3",
437afd2a MF	329	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
	330	.table = VCORE_VSEL_table,
	331	},
437afd2a MF	332	{
437afd2a MF	333	.name = "LDO1",
2040541a AL	334	.table_len = ARRAY_SIZE(TPS65020_LDO_VSEL_table),
2040541a AL	335	.table = TPS65020_LDO_VSEL_table,
437afd2a MF	336	},
	337	{
	338	.name = "LDO2",
2040541a AL	339	.table_len = ARRAY_SIZE(TPS65020_LDO_VSEL_table),
2040541a AL	340	.table = TPS65020_LDO_VSEL_table,
437afd2a MF	341	},
	342	};
	343
1c3ede05 MF	344	static const struct tps_info tps65021_regs[] = {
	345	{
	346	.name = "VDCDC1",
ba3bd8a3 AL	347	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	348	.table = DCDC_FIXED_3300000_VSEL_table,
1c3ede05 MF	349	},
	350	{
	351	.name = "VDCDC2",
ba3bd8a3 AL	352	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	353	.table = DCDC_FIXED_1800000_VSEL_table,
1c3ede05 MF	354	},
	355	{
	356	.name = "VDCDC3",
1c3ede05 MF	357	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
	358	.table = VCORE_VSEL_table,
	359	},
	360	{
	361	.name = "LDO1",
1c3ede05 MF	362	.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
	363	.table = TPS65023_LDO1_VSEL_table,
	364	},
	365	{
	366	.name = "LDO2",
1c3ede05 MF	367	.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
	368	.table = TPS65023_LDO2_VSEL_table,
	369	},
	370	};
	371
30e6599d AA	372	static const struct tps_info tps65023_regs[] = {
	373	{
	374	.name = "VDCDC1",
1c3ede05 MF	375	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
1c3ede05 MF	376	.table = VCORE_VSEL_table,
30e6599d AA	377	},
	378	{
	379	.name = "VDCDC2",
ba3bd8a3 AL	380	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	381	.table = DCDC_FIXED_3300000_VSEL_table,
30e6599d AA	382	},
	383	{
	384	.name = "VDCDC3",
ba3bd8a3 AL	385	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	386	.table = DCDC_FIXED_1800000_VSEL_table,
30e6599d AA	387	},
	388	{
	389	.name = "LDO1",
1c3ede05 MF	390	.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
1c3ede05 MF	391	.table = TPS65023_LDO1_VSEL_table,
30e6599d AA	392	},
	393	{
	394	.name = "LDO2",
1c3ede05 MF	395	.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
1c3ede05 MF	396	.table = TPS65023_LDO2_VSEL_table,
30e6599d AA	397	},
	398	};
	399
437afd2a MF	400	static struct tps_driver_data tps65020_drv_data = {
	401	.info = tps65020_regs,
	402	.core_regulator = TPS65023_DCDC_3,
	403	};
	404
1c3ede05	405	static struct tps_driver_data tps65021_drv_data = {
7061873f AL	406	.info = tps65021_regs,
7061873f AL	407	.core_regulator = TPS65023_DCDC_3,
1c3ede05 MF	408	};
	409
	410	static struct tps_driver_data tps65023_drv_data = {
7061873f AL	411	.info = tps65023_regs,
7061873f AL	412	.core_regulator = TPS65023_DCDC_1,
1c3ede05 MF	413	};
1c3ede05 MF	414
9e108d33 LG	415	static const struct i2c_device_id tps_65023_id[] = {
9e108d33 LG	416	{.name = "tps65023",
1c3ede05	417	.driver_data = (unsigned long) &tps65023_drv_data},
1880a2fc	418	{.name = "tps65021",
1c3ede05	419	.driver_data = (unsigned long) &tps65021_drv_data,},
437afd2a MF	420	{.name = "tps65020",
437afd2a MF	421	.driver_data = (unsigned long) &tps65020_drv_data},
9e108d33	422	{ },
30e6599d AA	423	};
	424
	425	MODULE_DEVICE_TABLE(i2c, tps_65023_id);
	426
	427	static struct i2c_driver tps_65023_i2c_driver = {
	428	.driver = {
	429	.name = "tps65023",
	430	.owner = THIS_MODULE,
	431	},
	432	.probe = tps_65023_probe,
5eb9f2b9	433	.remove = tps_65023_remove,
9e108d33	434	.id_table = tps_65023_id,
30e6599d AA	435	};
30e6599d AA	436
30e6599d AA	437	static int __init tps_65023_init(void)
	438	{
	439	return i2c_add_driver(&tps_65023_i2c_driver);
	440	}
	441	subsys_initcall(tps_65023_init);
	442
30e6599d AA	443	static void __exit tps_65023_cleanup(void)
	444	{
	445	i2c_del_driver(&tps_65023_i2c_driver);
	446	}
	447	module_exit(tps_65023_cleanup);
	448
	449	MODULE_AUTHOR("Texas Instruments");
	450	MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
9e108d33	451	MODULE_LICENSE("GPL v2");