[GitHub/mt8127/android_kernel_alcatel_ttab.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)

/* LDO_CTRL bitfields */
#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id)	((ldo_id)*4)
#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id)	(0x0F << ((ldo_id)*4))

/* 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(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 tps->info[dcdc]->table[data];
	} else
		return tps->info[dcdc]->table[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;
}

static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
{
	struct tps_pmic *tps = rdev_get_drvdata(dev);
	int data, ldo = rdev_get_id(dev);
	int ret;

	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
		return -EINVAL;

	ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data);
	if (ret != 0)
		return ret;

	data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1));
	data &= (tps->info[ldo]->table_len - 1);
	return tps->info[ldo]->table[data];
}

static int tps65023_ldo_set_voltage_sel(struct regulator_dev *dev,
					unsigned selector)
{
	struct tps_pmic *tps = rdev_get_drvdata(dev);
	int ldo_index = rdev_get_id(dev) - TPS65023_LDO_1;

	return regmap_update_bits(tps->regmap, TPS65023_REG_LDO_CTRL,
			TPS65023_LDO_CTRL_LDOx_MASK(ldo_index),
			selector << TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_index));
}

/* 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 = tps65023_dcdc_get_voltage,
	.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 = tps65023_ldo_get_voltage,
	.set_voltage_sel = tps65023_ldo_set_voltage_sel,
	.list_voltage = regulator_list_voltage_table,
};

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

static int __devinit 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;
		if (i == TPS65023_LDO_1)
			tps->desc[i].enable_mask = 1 << 1;
		else if (i == TPS65023_LDO_2)
			tps->desc[i].enable_mask = 1 << 2;
		else /* 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 __devexit 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 = __devexit_p(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	/* LDO_CTRL bitfields */
30e6599d AA	73	#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4)
7061873f	74	#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0x0F << ((ldo_id)*4))
30e6599d AA	75
	76	/* Number of step-down converters available */
	77	#define TPS65023_NUM_DCDC 3
	78	/* Number of LDO voltage regulators available */
	79	#define TPS65023_NUM_LDO 2
	80	/* Number of total regulators available */
	81	#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
	82
	83	/* DCDCs */
	84	#define TPS65023_DCDC_1 0
	85	#define TPS65023_DCDC_2 1
	86	#define TPS65023_DCDC_3 2
	87	/* LDOs */
	88	#define TPS65023_LDO_1 3
	89	#define TPS65023_LDO_2 4
	90
	91	#define TPS65023_MAX_REG_ID TPS65023_LDO_2
	92
	93	/* Supported voltage values for regulators */
ba3bd8a3 AL	94	static const unsigned int VCORE_VSEL_table[] = {
	95	800000, 825000, 850000, 875000,
	96	900000, 925000, 950000, 975000,
	97	1000000, 1025000, 1050000, 1075000,
	98	1100000, 1125000, 1150000, 1175000,
	99	1200000, 1225000, 1250000, 1275000,
	100	1300000, 1325000, 1350000, 1375000,
	101	1400000, 1425000, 1450000, 1475000,
	102	1500000, 1525000, 1550000, 1600000,
	103	};
	104
	105	static const unsigned int DCDC_FIXED_3300000_VSEL_table[] = {
	106	3300000,
	107	};
	108
	109	static const unsigned int DCDC_FIXED_1800000_VSEL_table[] = {
	110	1800000,
30e6599d AA	111	};
30e6599d AA	112
437afd2a	113	/* Supported voltage values for LDO regulators for tps65020 */
ba3bd8a3 AL	114	static const unsigned int TPS65020_LDO1_VSEL_table[] = {
	115	1000000, 1050000, 1100000, 1300000,
	116	1800000, 2500000, 3000000, 3300000,
437afd2a	117	};
1c3ede05	118
ba3bd8a3 AL	119	static const unsigned int TPS65020_LDO2_VSEL_table[] = {
	120	1000000, 1050000, 1100000, 1300000,
	121	1800000, 2500000, 3000000, 3300000,
437afd2a	122	};
1c3ede05 MF	123
	124	/* Supported voltage values for LDO regulators
	125	* for tps65021 and tps65023 */
ba3bd8a3 AL	126	static const unsigned int TPS65023_LDO1_VSEL_table[] = {
	127	1000000, 1100000, 1300000, 1800000,
	128	2200000, 2600000, 2800000, 3150000,
30e6599d AA	129	};
30e6599d AA	130
ba3bd8a3 AL	131	static const unsigned int TPS65023_LDO2_VSEL_table[] = {
	132	1050000, 1200000, 1300000, 1800000,
	133	2500000, 2800000, 3000000, 3300000,
30e6599d AA	134	};
30e6599d AA	135
30e6599d AA	136	/* Regulator specific details */
	137	struct tps_info {
	138	const char *name;
30e6599d	139	u8 table_len;
ba3bd8a3	140	const unsigned int *table;
30e6599d AA	141	};
	142
	143	/* PMIC details */
	144	struct tps_pmic {
	145	struct regulator_desc desc[TPS65023_NUM_REGULATOR];
30e6599d AA	146	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
30e6599d AA	147	const struct tps_info *info[TPS65023_NUM_REGULATOR];
90923351	148	struct regmap *regmap;
1c3ede05 MF	149	u8 core_regulator;
	150	};
	151
	152	/* Struct passed as driver data */
	153	struct tps_driver_data {
	154	const struct tps_info *info;
	155	u8 core_regulator;
30e6599d AA	156	};
30e6599d AA	157
30e6599d AA	158	static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
	159	{
	160	struct tps_pmic *tps = rdev_get_drvdata(dev);
43530b69	161	int ret;
30e6599d AA	162	int data, dcdc = rdev_get_id(dev);
	163
	164	if (dcdc < TPS65023_DCDC_1 \|\| dcdc > TPS65023_DCDC_3)
	165	return -EINVAL;
	166
1c3ede05	167	if (dcdc == tps->core_regulator) {
43530b69 JC	168	ret = regmap_read(tps->regmap, TPS65023_REG_DEF_CORE, &data);
	169	if (ret != 0)
	170	return ret;
30e6599d	171	data &= (tps->info[dcdc]->table_len - 1);
ba3bd8a3	172	return tps->info[dcdc]->table[data];
30e6599d	173	} else
ba3bd8a3	174	return tps->info[dcdc]->table[0];
30e6599d AA	175	}
30e6599d AA	176
7061873f AL	177	static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
7061873f AL	178	unsigned selector)
30e6599d AA	179	{
	180	struct tps_pmic *tps = rdev_get_drvdata(dev);
	181	int dcdc = rdev_get_id(dev);
cc17ef3f	182	int ret;
30e6599d	183
1c3ede05	184	if (dcdc != tps->core_regulator)
30e6599d	185	return -EINVAL;
30e6599d	186
7061873f AL	187	ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, selector);
	188	if (ret)
	189	goto out;
cc17ef3f MF	190
	191	/* Tell the chip that we have changed the value in DEFCORE
	192	* and its time to update the core voltage
	193	*/
7061873f AL	194	ret = regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
7061873f AL	195	TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);
cc17ef3f	196
7061873f	197	out:
cc17ef3f	198	return ret;
30e6599d AA	199	}
	200
	201	static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
	202	{
	203	struct tps_pmic *tps = rdev_get_drvdata(dev);
	204	int data, ldo = rdev_get_id(dev);
43530b69	205	int ret;
30e6599d AA	206
	207	if (ldo < TPS65023_LDO_1 \|\| ldo > TPS65023_LDO_2)
	208	return -EINVAL;
	209
43530b69 JC	210	ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data);
	211	if (ret != 0)
	212	return ret;
30e6599d AA	213
	214	data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1));
	215	data &= (tps->info[ldo]->table_len - 1);
ba3bd8a3	216	return tps->info[ldo]->table[data];
30e6599d AA	217	}
30e6599d AA	218
7061873f AL	219	static int tps65023_ldo_set_voltage_sel(struct regulator_dev *dev,
7061873f AL	220	unsigned selector)
30e6599d AA	221	{
30e6599d AA	222	struct tps_pmic *tps = rdev_get_drvdata(dev);
7061873f	223	int ldo_index = rdev_get_id(dev) - TPS65023_LDO_1;
30e6599d	224
7061873f AL	225	return regmap_update_bits(tps->regmap, TPS65023_REG_LDO_CTRL,
	226	TPS65023_LDO_CTRL_LDOx_MASK(ldo_index),
	227	selector << TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_index));
30e6599d AA	228	}
30e6599d AA	229
30e6599d AA	230	/* Operations permitted on VDCDCx */
30e6599d AA	231	static struct regulator_ops tps65023_dcdc_ops = {
ee7b1914 AL	232	.is_enabled = regulator_is_enabled_regmap,
	233	.enable = regulator_enable_regmap,
	234	.disable = regulator_disable_regmap,
30e6599d	235	.get_voltage = tps65023_dcdc_get_voltage,
7061873f	236	.set_voltage_sel = tps65023_dcdc_set_voltage_sel,
ba3bd8a3	237	.list_voltage = regulator_list_voltage_table,
30e6599d AA	238	};
	239
	240	/* Operations permitted on LDOx */
	241	static struct regulator_ops tps65023_ldo_ops = {
ee7b1914 AL	242	.is_enabled = regulator_is_enabled_regmap,
	243	.enable = regulator_enable_regmap,
	244	.disable = regulator_disable_regmap,
30e6599d	245	.get_voltage = tps65023_ldo_get_voltage,
7061873f	246	.set_voltage_sel = tps65023_ldo_set_voltage_sel,
ba3bd8a3	247	.list_voltage = regulator_list_voltage_table,
30e6599d AA	248	};
30e6599d AA	249
90923351 MB	250	static struct regmap_config tps65023_regmap_config = {
	251	.reg_bits = 8,
	252	.val_bits = 8,
	253	};
	254
54d13ab1 DT	255	static int __devinit tps_65023_probe(struct i2c_client *client,
54d13ab1 DT	256	const struct i2c_device_id *id)
30e6599d	257	{
1c3ede05 MF	258	const struct tps_driver_data drv_data = (void )id->driver_data;
1c3ede05 MF	259	const struct tps_info *info = drv_data->info;
c172708d	260	struct regulator_config config = { };
30e6599d AA	261	struct regulator_init_data *init_data;
	262	struct regulator_dev *rdev;
	263	struct tps_pmic *tps;
	264	int i;
54d13ab1	265	int error;
30e6599d AA	266
	267	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	268	return -EIO;
	269
	270	/**
	271	* init_data points to array of regulator_init structures
	272	* coming from the board-evm file.
	273	*/
	274	init_data = client->dev.platform_data;
30e6599d AA	275	if (!init_data)
	276	return -EIO;
	277
19a8da21	278	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
30e6599d AA	279	if (!tps)
	280	return -ENOMEM;
	281
19a8da21	282	tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
90923351 MB	283	if (IS_ERR(tps->regmap)) {
	284	error = PTR_ERR(tps->regmap);
	285	dev_err(&client->dev, "Failed to allocate register map: %d\n",
	286	error);
19a8da21	287	return error;
90923351	288	}
30e6599d AA	289
30e6599d AA	290	/* common for all regulators */
1c3ede05	291	tps->core_regulator = drv_data->core_regulator;
30e6599d AA	292
	293	for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
	294	/* Store regulator specific information */
	295	tps->info[i] = info;
	296
	297	tps->desc[i].name = info->name;
77fa44d0	298	tps->desc[i].id = i;
ba3bd8a3 AL	299	tps->desc[i].n_voltages = info->table_len;
ba3bd8a3 AL	300	tps->desc[i].volt_table = info->table;
30e6599d AA	301	tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
	302	&tps65023_ldo_ops : &tps65023_dcdc_ops);
	303	tps->desc[i].type = REGULATOR_VOLTAGE;
	304	tps->desc[i].owner = THIS_MODULE;
	305
ee7b1914 AL	306	tps->desc[i].enable_reg = TPS65023_REG_REG_CTRL;
	307	if (i == TPS65023_LDO_1)
	308	tps->desc[i].enable_mask = 1 << 1;
	309	else if (i == TPS65023_LDO_2)
	310	tps->desc[i].enable_mask = 1 << 2;
	311	else /* DCDCx */
	312	tps->desc[i].enable_mask =
	313	1 << (TPS65023_NUM_REGULATOR - i);
	314
c172708d MB	315	config.dev = &client->dev;
	316	config.init_data = init_data;
	317	config.driver_data = tps;
ee7b1914	318	config.regmap = tps->regmap;
c172708d	319
30e6599d	320	/* Register the regulators */
c172708d	321	rdev = regulator_register(&tps->desc[i], &config);
30e6599d AA	322	if (IS_ERR(rdev)) {
	323	dev_err(&client->dev, "failed to register %s\n",
	324	id->name);
54d13ab1 DT	325	error = PTR_ERR(rdev);
54d13ab1 DT	326	goto fail;
30e6599d AA	327	}
	328
	329	/* Save regulator for cleanup */
	330	tps->rdev[i] = rdev;
	331	}
	332
	333	i2c_set_clientdata(client, tps);
	334
fc999b83	335	/* Enable setting output voltage by I2C */
43530b69 JC	336	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
43530b69 JC	337	TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ);
fc999b83	338
30e6599d	339	return 0;
54d13ab1 DT	340
	341	fail:
	342	while (--i >= 0)
	343	regulator_unregister(tps->rdev[i]);
54d13ab1	344	return error;
30e6599d AA	345	}
30e6599d AA	346
30e6599d AA	347	static int __devexit tps_65023_remove(struct i2c_client *client)
	348	{
	349	struct tps_pmic *tps = i2c_get_clientdata(client);
	350	int i;
	351
	352	for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
	353	regulator_unregister(tps->rdev[i]);
30e6599d AA	354	return 0;
	355	}
	356
437afd2a MF	357	static const struct tps_info tps65020_regs[] = {
	358	{
	359	.name = "VDCDC1",
ba3bd8a3 AL	360	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	361	.table = DCDC_FIXED_3300000_VSEL_table,
437afd2a MF	362	},
	363	{
	364	.name = "VDCDC2",
ba3bd8a3 AL	365	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	366	.table = DCDC_FIXED_1800000_VSEL_table,
437afd2a MF	367	},
	368	{
	369	.name = "VDCDC3",
437afd2a MF	370	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
	371	.table = VCORE_VSEL_table,
	372	},
437afd2a MF	373	{
437afd2a MF	374	.name = "LDO1",
437afd2a MF	375	.table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table),
	376	.table = TPS65020_LDO1_VSEL_table,
	377	},
	378	{
	379	.name = "LDO2",
437afd2a MF	380	.table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table),
	381	.table = TPS65020_LDO2_VSEL_table,
	382	},
	383	};
	384
1c3ede05 MF	385	static const struct tps_info tps65021_regs[] = {
	386	{
	387	.name = "VDCDC1",
ba3bd8a3 AL	388	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	389	.table = DCDC_FIXED_3300000_VSEL_table,
1c3ede05 MF	390	},
	391	{
	392	.name = "VDCDC2",
ba3bd8a3 AL	393	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	394	.table = DCDC_FIXED_1800000_VSEL_table,
1c3ede05 MF	395	},
	396	{
	397	.name = "VDCDC3",
1c3ede05 MF	398	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
	399	.table = VCORE_VSEL_table,
	400	},
	401	{
	402	.name = "LDO1",
1c3ede05 MF	403	.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
	404	.table = TPS65023_LDO1_VSEL_table,
	405	},
	406	{
	407	.name = "LDO2",
1c3ede05 MF	408	.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
	409	.table = TPS65023_LDO2_VSEL_table,
	410	},
	411	};
	412
30e6599d AA	413	static const struct tps_info tps65023_regs[] = {
	414	{
	415	.name = "VDCDC1",
1c3ede05 MF	416	.table_len = ARRAY_SIZE(VCORE_VSEL_table),
1c3ede05 MF	417	.table = VCORE_VSEL_table,
30e6599d AA	418	},
	419	{
	420	.name = "VDCDC2",
ba3bd8a3 AL	421	.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
ba3bd8a3 AL	422	.table = DCDC_FIXED_3300000_VSEL_table,
30e6599d AA	423	},
	424	{
	425	.name = "VDCDC3",
ba3bd8a3 AL	426	.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
ba3bd8a3 AL	427	.table = DCDC_FIXED_1800000_VSEL_table,
30e6599d AA	428	},
	429	{
	430	.name = "LDO1",
1c3ede05 MF	431	.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
1c3ede05 MF	432	.table = TPS65023_LDO1_VSEL_table,
30e6599d AA	433	},
	434	{
	435	.name = "LDO2",
1c3ede05 MF	436	.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
1c3ede05 MF	437	.table = TPS65023_LDO2_VSEL_table,
30e6599d AA	438	},
	439	};
	440
437afd2a MF	441	static struct tps_driver_data tps65020_drv_data = {
	442	.info = tps65020_regs,
	443	.core_regulator = TPS65023_DCDC_3,
	444	};
	445
1c3ede05	446	static struct tps_driver_data tps65021_drv_data = {
7061873f AL	447	.info = tps65021_regs,
7061873f AL	448	.core_regulator = TPS65023_DCDC_3,
1c3ede05 MF	449	};
	450
	451	static struct tps_driver_data tps65023_drv_data = {
7061873f AL	452	.info = tps65023_regs,
7061873f AL	453	.core_regulator = TPS65023_DCDC_1,
1c3ede05 MF	454	};
1c3ede05 MF	455
9e108d33 LG	456	static const struct i2c_device_id tps_65023_id[] = {
9e108d33 LG	457	{.name = "tps65023",
1c3ede05	458	.driver_data = (unsigned long) &tps65023_drv_data},
1880a2fc	459	{.name = "tps65021",
1c3ede05	460	.driver_data = (unsigned long) &tps65021_drv_data,},
437afd2a MF	461	{.name = "tps65020",
437afd2a MF	462	.driver_data = (unsigned long) &tps65020_drv_data},
9e108d33	463	{ },
30e6599d AA	464	};
	465
	466	MODULE_DEVICE_TABLE(i2c, tps_65023_id);
	467
	468	static struct i2c_driver tps_65023_i2c_driver = {
	469	.driver = {
	470	.name = "tps65023",
	471	.owner = THIS_MODULE,
	472	},
	473	.probe = tps_65023_probe,
	474	.remove = __devexit_p(tps_65023_remove),
9e108d33	475	.id_table = tps_65023_id,
30e6599d AA	476	};
30e6599d AA	477
30e6599d AA	478	static int __init tps_65023_init(void)
	479	{
	480	return i2c_add_driver(&tps_65023_i2c_driver);
	481	}
	482	subsys_initcall(tps_65023_init);
	483
30e6599d AA	484	static void __exit tps_65023_cleanup(void)
	485	{
	486	i2c_del_driver(&tps_65023_i2c_driver);
	487	}
	488	module_exit(tps_65023_cleanup);
	489
	490	MODULE_AUTHOR("Texas Instruments");
	491	MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
9e108d33	492	MODULE_LICENSE("GPL v2");