[linux-2.6-block.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_LDO1_VSEL_table[] = {
	1000000, 1050000, 1100000, 1300000,
	1800000, 2500000, 3000000, 3300000,
};

static const unsigned int TPS65020_LDO2_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 ret;
	int data, dcdc = rdev_get_id(dev);

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

	if (dcdc == tps->core_regulator) {
		ret = regmap_read(tps->regmap, TPS65023_REG_DEF_CORE, &data);
		if (ret != 0)
			return ret;
		data &= (tps->info[dcdc]->table_len - 1);
		return data;
	} else
		return 0;
}

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);
	int ret;

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

	ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, selector);
	if (ret)
		goto out;

	/* Tell the chip that we have changed the value in DEFCORE
	 * and its time to update the core voltage
	 */
	ret = regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
				 TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);

out:
	return ret;
}

/* 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,
};

/* 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,
};

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);
		}

		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_LDO1_VSEL_table),
		.table = TPS65020_LDO1_VSEL_table,
	},
	{
		.name = "LDO2",
		.table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table),
		.table = TPS65020_LDO2_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 */
ba3bd8a3 AL	110	static const unsigned int TPS65020_LDO1_VSEL_table[] = {
	111	1000000, 1050000, 1100000, 1300000,
	112	1800000, 2500000, 3000000, 3300000,
437afd2a	113	};
1c3ede05	114
ba3bd8a3 AL	115	static const unsigned int TPS65020_LDO2_VSEL_table[] = {
	116	1000000, 1050000, 1100000, 1300000,
	117	1800000, 2500000, 3000000, 3300000,
437afd2a	118	};
1c3ede05 MF	119
	120	/* Supported voltage values for LDO regulators
	121	* for tps65021 and tps65023 */
ba3bd8a3 AL	122	static const unsigned int TPS65023_LDO1_VSEL_table[] = {
	123	1000000, 1100000, 1300000, 1800000,
	124	2200000, 2600000, 2800000, 3150000,
30e6599d AA	125	};
30e6599d AA	126
ba3bd8a3 AL	127	static const unsigned int TPS65023_LDO2_VSEL_table[] = {
	128	1050000, 1200000, 1300000, 1800000,
	129	2500000, 2800000, 3000000, 3300000,
30e6599d AA	130	};
30e6599d AA	131
30e6599d AA	132	/* Regulator specific details */
	133	struct tps_info {
	134	const char *name;
30e6599d	135	u8 table_len;
ba3bd8a3	136	const unsigned int *table;
30e6599d AA	137	};
	138
	139	/* PMIC details */
	140	struct tps_pmic {
	141	struct regulator_desc desc[TPS65023_NUM_REGULATOR];
30e6599d AA	142	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
30e6599d AA	143	const struct tps_info *info[TPS65023_NUM_REGULATOR];
90923351	144	struct regmap *regmap;
1c3ede05 MF	145	u8 core_regulator;
	146	};
	147
	148	/* Struct passed as driver data */
	149	struct tps_driver_data {
	150	const struct tps_info *info;
	151	u8 core_regulator;
30e6599d AA	152	};
30e6599d AA	153
a133829e	154	static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
30e6599d AA	155	{
30e6599d AA	156	struct tps_pmic *tps = rdev_get_drvdata(dev);
43530b69	157	int ret;
30e6599d AA	158	int data, dcdc = rdev_get_id(dev);
	159
	160	if (dcdc < TPS65023_DCDC_1 \|\| dcdc > TPS65023_DCDC_3)
	161	return -EINVAL;
	162
1c3ede05	163	if (dcdc == tps->core_regulator) {
43530b69 JC	164	ret = regmap_read(tps->regmap, TPS65023_REG_DEF_CORE, &data);
	165	if (ret != 0)
	166	return ret;
30e6599d	167	data &= (tps->info[dcdc]->table_len - 1);
a133829e	168	return data;
30e6599d	169	} else
a133829e	170	return 0;
30e6599d AA	171	}
30e6599d AA	172
7061873f AL	173	static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
7061873f AL	174	unsigned selector)
30e6599d AA	175	{
	176	struct tps_pmic *tps = rdev_get_drvdata(dev);
	177	int dcdc = rdev_get_id(dev);
cc17ef3f	178	int ret;
30e6599d	179
1c3ede05	180	if (dcdc != tps->core_regulator)
30e6599d	181	return -EINVAL;
30e6599d	182
7061873f AL	183	ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, selector);
	184	if (ret)
	185	goto out;
cc17ef3f MF	186
	187	/* Tell the chip that we have changed the value in DEFCORE
	188	* and its time to update the core voltage
	189	*/
7061873f AL	190	ret = regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
7061873f AL	191	TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);
cc17ef3f	192
7061873f	193	out:
cc17ef3f	194	return ret;
30e6599d AA	195	}
30e6599d AA	196
30e6599d AA	197	/* Operations permitted on VDCDCx */
30e6599d AA	198	static struct regulator_ops tps65023_dcdc_ops = {
ee7b1914 AL	199	.is_enabled = regulator_is_enabled_regmap,
	200	.enable = regulator_enable_regmap,
	201	.disable = regulator_disable_regmap,
a133829e	202	.get_voltage_sel = tps65023_dcdc_get_voltage_sel,
7061873f	203	.set_voltage_sel = tps65023_dcdc_set_voltage_sel,
ba3bd8a3	204	.list_voltage = regulator_list_voltage_table,
30e6599d AA	205	};
	206
	207	/* Operations permitted on LDOx */
	208	static struct regulator_ops tps65023_ldo_ops = {
ee7b1914 AL	209	.is_enabled = regulator_is_enabled_regmap,
	210	.enable = regulator_enable_regmap,
	211	.disable = regulator_disable_regmap,
e90a8447 AL	212	.get_voltage_sel = regulator_get_voltage_sel_regmap,
e90a8447 AL	213	.set_voltage_sel = regulator_set_voltage_sel_regmap,
ba3bd8a3	214	.list_voltage = regulator_list_voltage_table,
30e6599d AA	215	};
30e6599d AA	216
90923351 MB	217	static struct regmap_config tps65023_regmap_config = {
	218	.reg_bits = 8,
	219	.val_bits = 8,
	220	};
	221
a5023574	222	static int tps_65023_probe(struct i2c_client *client,
54d13ab1	223	const struct i2c_device_id *id)
30e6599d	224	{
1c3ede05 MF	225	const struct tps_driver_data drv_data = (void )id->driver_data;
1c3ede05 MF	226	const struct tps_info *info = drv_data->info;
c172708d	227	struct regulator_config config = { };
30e6599d AA	228	struct regulator_init_data *init_data;
	229	struct regulator_dev *rdev;
	230	struct tps_pmic *tps;
	231	int i;
54d13ab1	232	int error;
30e6599d AA	233
	234	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	235	return -EIO;
	236
	237	/**
	238	* init_data points to array of regulator_init structures
	239	* coming from the board-evm file.
	240	*/
	241	init_data = client->dev.platform_data;
30e6599d AA	242	if (!init_data)
	243	return -EIO;
	244
19a8da21	245	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
30e6599d AA	246	if (!tps)
	247	return -ENOMEM;
	248
19a8da21	249	tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
90923351 MB	250	if (IS_ERR(tps->regmap)) {
	251	error = PTR_ERR(tps->regmap);
	252	dev_err(&client->dev, "Failed to allocate register map: %d\n",
	253	error);
19a8da21	254	return error;
90923351	255	}
30e6599d AA	256
30e6599d AA	257	/* common for all regulators */
1c3ede05	258	tps->core_regulator = drv_data->core_regulator;
30e6599d AA	259
	260	for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
	261	/* Store regulator specific information */
	262	tps->info[i] = info;
	263
	264	tps->desc[i].name = info->name;
77fa44d0	265	tps->desc[i].id = i;
ba3bd8a3 AL	266	tps->desc[i].n_voltages = info->table_len;
ba3bd8a3 AL	267	tps->desc[i].volt_table = info->table;
30e6599d AA	268	tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
	269	&tps65023_ldo_ops : &tps65023_dcdc_ops);
	270	tps->desc[i].type = REGULATOR_VOLTAGE;
	271	tps->desc[i].owner = THIS_MODULE;
	272
ee7b1914	273	tps->desc[i].enable_reg = TPS65023_REG_REG_CTRL;
e90a8447 AL	274	switch (i) {
	275	case TPS65023_LDO_1:
	276	tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
	277	tps->desc[i].vsel_mask = 0x07;
ee7b1914	278	tps->desc[i].enable_mask = 1 << 1;
e90a8447 AL	279	break;
	280	case TPS65023_LDO_2:
	281	tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
	282	tps->desc[i].vsel_mask = 0x70;
ee7b1914	283	tps->desc[i].enable_mask = 1 << 2;
e90a8447 AL	284	break;
e90a8447 AL	285	default: /* DCDCx */
ee7b1914 AL	286	tps->desc[i].enable_mask =
ee7b1914 AL	287	1 << (TPS65023_NUM_REGULATOR - i);
e90a8447	288	}
ee7b1914	289
c172708d MB	290	config.dev = &client->dev;
	291	config.init_data = init_data;
	292	config.driver_data = tps;
ee7b1914	293	config.regmap = tps->regmap;
c172708d	294
30e6599d	295	/* Register the regulators */
c172708d	296	rdev = regulator_register(&tps->desc[i], &config);
30e6599d AA	297	if (IS_ERR(rdev)) {
	298	dev_err(&client->dev, "failed to register %s\n",
	299	id->name);
54d13ab1 DT	300	error = PTR_ERR(rdev);
54d13ab1 DT	301	goto fail;
30e6599d AA	302	}
	303
	304	/* Save regulator for cleanup */
	305	tps->rdev[i] = rdev;
	306	}
	307
	308	i2c_set_clientdata(client, tps);
	309
fc999b83	310	/* Enable setting output voltage by I2C */
43530b69 JC	311	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
43530b69 JC	312	TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ);
fc999b83	313
30e6599d	314	return 0;
54d13ab1 DT	315
	316	fail:
	317	while (--i >= 0)
	318	regulator_unregister(tps->rdev[i]);
54d13ab1	319	return error;
30e6599d AA	320	}
30e6599d AA	321
8dc995f5	322	static int tps_65023_remove(struct i2c_client *client)
30e6599d AA	323	{
	324	struct tps_pmic *tps = i2c_get_clientdata(client);
	325	int i;
	326
	327	for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
	328	regulator_unregister(tps->rdev[i]);
30e6599d AA	329	return 0;
	330	}
	331
437afd2a MF	332	static const struct tps_info tps65020_regs[] = {
	333	{
	334	.name = "VDCDC1",
ba3bd8a3 AL	335	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	336	.table = DCDC_FIXED_3300000_VSEL_table,
437afd2a MF	337	},
	338	{
	339	.name = "VDCDC2",
ba3bd8a3 AL	340	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	341	.table = DCDC_FIXED_1800000_VSEL_table,
437afd2a MF	342	},
	343	{
	344	.name = "VDCDC3",
437afd2a MF	345	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
	346	.table = VCORE_VSEL_table,
	347	},
437afd2a MF	348	{
437afd2a MF	349	.name = "LDO1",
437afd2a MF	350	.table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table),
	351	.table = TPS65020_LDO1_VSEL_table,
	352	},
	353	{
	354	.name = "LDO2",
437afd2a MF	355	.table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table),
	356	.table = TPS65020_LDO2_VSEL_table,
	357	},
	358	};
	359
1c3ede05 MF	360	static const struct tps_info tps65021_regs[] = {
	361	{
	362	.name = "VDCDC1",
ba3bd8a3 AL	363	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	364	.table = DCDC_FIXED_3300000_VSEL_table,
1c3ede05 MF	365	},
	366	{
	367	.name = "VDCDC2",
ba3bd8a3 AL	368	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	369	.table = DCDC_FIXED_1800000_VSEL_table,
1c3ede05 MF	370	},
	371	{
	372	.name = "VDCDC3",
1c3ede05 MF	373	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
	374	.table = VCORE_VSEL_table,
	375	},
	376	{
	377	.name = "LDO1",
1c3ede05 MF	378	.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
	379	.table = TPS65023_LDO1_VSEL_table,
	380	},
	381	{
	382	.name = "LDO2",
1c3ede05 MF	383	.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
	384	.table = TPS65023_LDO2_VSEL_table,
	385	},
	386	};
	387
30e6599d AA	388	static const struct tps_info tps65023_regs[] = {
	389	{
	390	.name = "VDCDC1",
1c3ede05 MF	391	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
1c3ede05 MF	392	.table = VCORE_VSEL_table,
30e6599d AA	393	},
	394	{
	395	.name = "VDCDC2",
ba3bd8a3 AL	396	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	397	.table = DCDC_FIXED_3300000_VSEL_table,
30e6599d AA	398	},
	399	{
	400	.name = "VDCDC3",
ba3bd8a3 AL	401	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	402	.table = DCDC_FIXED_1800000_VSEL_table,
30e6599d AA	403	},
	404	{
	405	.name = "LDO1",
1c3ede05 MF	406	.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
1c3ede05 MF	407	.table = TPS65023_LDO1_VSEL_table,
30e6599d AA	408	},
	409	{
	410	.name = "LDO2",
1c3ede05 MF	411	.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
1c3ede05 MF	412	.table = TPS65023_LDO2_VSEL_table,
30e6599d AA	413	},
	414	};
	415
437afd2a MF	416	static struct tps_driver_data tps65020_drv_data = {
	417	.info = tps65020_regs,
	418	.core_regulator = TPS65023_DCDC_3,
	419	};
	420
1c3ede05	421	static struct tps_driver_data tps65021_drv_data = {
7061873f AL	422	.info = tps65021_regs,
7061873f AL	423	.core_regulator = TPS65023_DCDC_3,
1c3ede05 MF	424	};
	425
	426	static struct tps_driver_data tps65023_drv_data = {
7061873f AL	427	.info = tps65023_regs,
7061873f AL	428	.core_regulator = TPS65023_DCDC_1,
1c3ede05 MF	429	};
1c3ede05 MF	430
9e108d33 LG	431	static const struct i2c_device_id tps_65023_id[] = {
9e108d33 LG	432	{.name = "tps65023",
1c3ede05	433	.driver_data = (unsigned long) &tps65023_drv_data},
1880a2fc	434	{.name = "tps65021",
1c3ede05	435	.driver_data = (unsigned long) &tps65021_drv_data,},
437afd2a MF	436	{.name = "tps65020",
437afd2a MF	437	.driver_data = (unsigned long) &tps65020_drv_data},
9e108d33	438	{ },
30e6599d AA	439	};
	440
	441	MODULE_DEVICE_TABLE(i2c, tps_65023_id);
	442
	443	static struct i2c_driver tps_65023_i2c_driver = {
	444	.driver = {
	445	.name = "tps65023",
	446	.owner = THIS_MODULE,
	447	},
	448	.probe = tps_65023_probe,
5eb9f2b9	449	.remove = tps_65023_remove,
9e108d33	450	.id_table = tps_65023_id,
30e6599d AA	451	};
30e6599d AA	452
30e6599d AA	453	static int __init tps_65023_init(void)
	454	{
	455	return i2c_add_driver(&tps_65023_i2c_driver);
	456	}
	457	subsys_initcall(tps_65023_init);
	458
30e6599d AA	459	static void __exit tps_65023_cleanup(void)
	460	{
	461	i2c_del_driver(&tps_65023_i2c_driver);
	462	}
	463	module_exit(tps_65023_cleanup);
	464
	465	MODULE_AUTHOR("Texas Instruments");
	466	MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
9e108d33	467	MODULE_LICENSE("GPL v2");