[net-next-2.6.git] / drivers / regulator / tps6507x-regulator.c

/*
 * tps6507x-regulator.c
 *
 * Regulator driver for TPS65073 PMIC
 *
 * 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/delay.h>
#include <linux/slab.h>
#include <linux/mfd/tps6507x.h>

/* DCDC's */
#define TPS6507X_DCDC_1				0
#define TPS6507X_DCDC_2				1
#define TPS6507X_DCDC_3				2
/* LDOs */
#define TPS6507X_LDO_1				3
#define TPS6507X_LDO_2				4

#define TPS6507X_MAX_REG_ID			TPS6507X_LDO_2

/* Number of step-down converters available */
#define TPS6507X_NUM_DCDC			3
/* Number of LDO voltage regulators  available */
#define TPS6507X_NUM_LDO			2
/* Number of total regulators available */
#define TPS6507X_NUM_REGULATOR		(TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)

/* Supported voltage values for regulators (in milliVolts) */
static const u16 VDCDCx_VSEL_table[] = {
	725, 750, 775, 800,
	825, 850, 875, 900,
	925, 950, 975, 1000,
	1025, 1050, 1075, 1100,
	1125, 1150, 1175, 1200,
	1225, 1250, 1275, 1300,
	1325, 1350, 1375, 1400,
	1425, 1450, 1475, 1500,
	1550, 1600, 1650, 1700,
	1750, 1800, 1850, 1900,
	1950, 2000, 2050, 2100,
	2150, 2200, 2250, 2300,
	2350, 2400, 2450, 2500,
	2550, 2600, 2650, 2700,
	2750, 2800, 2850, 2900,
	3000, 3100, 3200, 3300,
};

static const u16 LDO1_VSEL_table[] = {
	1000, 1100, 1200, 1250,
	1300, 1350, 1400, 1500,
	1600, 1800, 2500, 2750,
	2800, 3000, 3100, 3300,
};

static const u16 LDO2_VSEL_table[] = {
	725, 750, 775, 800,
	825, 850, 875, 900,
	925, 950, 975, 1000,
	1025, 1050, 1075, 1100,
	1125, 1150, 1175, 1200,
	1225, 1250, 1275, 1300,
	1325, 1350, 1375, 1400,
	1425, 1450, 1475, 1500,
	1550, 1600, 1650, 1700,
	1750, 1800, 1850, 1900,
	1950, 2000, 2050, 2100,
	2150, 2200, 2250, 2300,
	2350, 2400, 2450, 2500,
	2550, 2600, 2650, 2700,
	2750, 2800, 2850, 2900,
	3000, 3100, 3200, 3300,
};

static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
				ARRAY_SIZE(VDCDCx_VSEL_table),
				ARRAY_SIZE(VDCDCx_VSEL_table),
				ARRAY_SIZE(LDO1_VSEL_table),
				ARRAY_SIZE(LDO2_VSEL_table)};

struct tps_info {
	const char *name;
	unsigned min_uV;
	unsigned max_uV;
	u8 table_len;
	const u16 *table;
};

static const struct tps_info tps6507x_pmic_regs[] = {
	{
		.name = "VDCDC1",
		.min_uV = 725000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
		.table = VDCDCx_VSEL_table,
	},
	{
		.name = "VDCDC2",
		.min_uV = 725000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
		.table = VDCDCx_VSEL_table,
	},
	{
		.name = "VDCDC3",
		.min_uV = 725000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
		.table = VDCDCx_VSEL_table,
	},
	{
		.name = "LDO1",
		.min_uV = 1000000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(LDO1_VSEL_table),
		.table = LDO1_VSEL_table,
	},
	{
		.name = "LDO2",
		.min_uV = 725000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(LDO2_VSEL_table),
		.table = LDO2_VSEL_table,
	},
};

struct tps6507x_pmic {
	struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
	struct tps6507x_dev *mfd;
	struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
	const struct tps_info *info[TPS6507X_NUM_REGULATOR];
	struct mutex io_lock;
};
static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
{
	u8 val;
	int err;

	err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);

	if (err)
		return err;

	return val;
}

static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
{
	return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
}

static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
{
	int err, data;

	mutex_lock(&tps->io_lock);

	data = tps6507x_pmic_read(tps, reg);
	if (data < 0) {
		dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
		err = data;
		goto out;
	}

	data |= mask;
	err = tps6507x_pmic_write(tps, reg, data);
	if (err)
		dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);

out:
	mutex_unlock(&tps->io_lock);
	return err;
}

static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
{
	int err, data;

	mutex_lock(&tps->io_lock);

	data = tps6507x_pmic_read(tps, reg);
	if (data < 0) {
		dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
		err = data;
		goto out;
	}

	data &= ~mask;
	err = tps6507x_pmic_write(tps, reg, data);
	if (err)
		dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);

out:
	mutex_unlock(&tps->io_lock);
	return err;
}

static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
{
	int data;

	mutex_lock(&tps->io_lock);

	data = tps6507x_pmic_read(tps, reg);
	if (data < 0)
		dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);

	mutex_unlock(&tps->io_lock);
	return data;
}

static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
{
	int err;

	mutex_lock(&tps->io_lock);

	err = tps6507x_pmic_write(tps, reg, val);
	if (err < 0)
		dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);

	mutex_unlock(&tps->io_lock);
	return err;
}

static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, dcdc = rdev_get_id(dev);
	u8 shift;

	if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - dcdc;
	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);

	if (data < 0)
		return data;
	else
		return (data & 1<<shift) ? 1 : 0;
}

static int tps6507x_pmic_ldo_is_enabled(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, ldo = rdev_get_id(dev);
	u8 shift;

	if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - ldo;
	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);

	if (data < 0)
		return data;
	else
		return (data & 1<<shift) ? 1 : 0;
}

static int tps6507x_pmic_dcdc_enable(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int dcdc = rdev_get_id(dev);
	u8 shift;

	if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - dcdc;
	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}

static int tps6507x_pmic_dcdc_disable(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int dcdc = rdev_get_id(dev);
	u8 shift;

	if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - dcdc;
	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
					1 << shift);
}

static int tps6507x_pmic_ldo_enable(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int ldo = rdev_get_id(dev);
	u8 shift;

	if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - ldo;
	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}

static int tps6507x_pmic_ldo_disable(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int ldo = rdev_get_id(dev);
	u8 shift;

	if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - ldo;
	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
					1 << shift);
}

static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, dcdc = rdev_get_id(dev);
	u8 reg;

	switch (dcdc) {
	case TPS6507X_DCDC_1:
		reg = TPS6507X_REG_DEFDCDC1;
		break;
	case TPS6507X_DCDC_2:
		reg = TPS6507X_REG_DEFDCDC2_LOW;
		break;
	case TPS6507X_DCDC_3:
		reg = TPS6507X_REG_DEFDCDC3_LOW;
		break;
	default:
		return -EINVAL;
	}

	data = tps6507x_pmic_reg_read(tps, reg);
	if (data < 0)
		return data;

	data &= TPS6507X_DEFDCDCX_DCDC_MASK;
	return tps->info[dcdc]->table[data] * 1000;
}

static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
				int min_uV, int max_uV)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, vsel, dcdc = rdev_get_id(dev);
	u8 reg;

	switch (dcdc) {
	case TPS6507X_DCDC_1:
		reg = TPS6507X_REG_DEFDCDC1;
		break;
	case TPS6507X_DCDC_2:
		reg = TPS6507X_REG_DEFDCDC2_LOW;
		break;
	case TPS6507X_DCDC_3:
		reg = TPS6507X_REG_DEFDCDC3_LOW;
		break;
	default:
		return -EINVAL;
	}

	if (min_uV < tps->info[dcdc]->min_uV
		|| min_uV > tps->info[dcdc]->max_uV)
		return -EINVAL;
	if (max_uV < tps->info[dcdc]->min_uV
		|| max_uV > tps->info[dcdc]->max_uV)
		return -EINVAL;

	for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
		int mV = tps->info[dcdc]->table[vsel];
		int uV = mV * 1000;

		/* Break at the first in-range value */
		if (min_uV <= uV && uV <= max_uV)
			break;
	}

	/* write to the register in case we found a match */
	if (vsel == tps->info[dcdc]->table_len)
		return -EINVAL;

	data = tps6507x_pmic_reg_read(tps, reg);
	if (data < 0)
		return data;

	data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
	data |= vsel;

	return tps6507x_pmic_reg_write(tps, reg, data);
}

static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, ldo = rdev_get_id(dev);
	u8 reg, mask;

	if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
		return -EINVAL;
	else {
		reg = (ldo == TPS6507X_LDO_1 ?
			TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
		mask = (ldo == TPS6507X_LDO_1 ?
			TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
				TPS6507X_REG_DEFLDO2_LDO2_MASK);
	}

	data = tps6507x_pmic_reg_read(tps, reg);
	if (data < 0)
		return data;

	data &= mask;
	return tps->info[ldo]->table[data] * 1000;
}

static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
				int min_uV, int max_uV)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, vsel, ldo = rdev_get_id(dev);
	u8 reg, mask;

	if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
		return -EINVAL;
	else {
		reg = (ldo == TPS6507X_LDO_1 ?
			TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
		mask = (ldo == TPS6507X_LDO_1 ?
			TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
				TPS6507X_REG_DEFLDO2_LDO2_MASK);
	}

	if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
		return -EINVAL;
	if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
		return -EINVAL;

	for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
		int mV = tps->info[ldo]->table[vsel];
		int uV = mV * 1000;

		/* Break at the first in-range value */
		if (min_uV <= uV && uV <= max_uV)
			break;
	}

	if (vsel == tps->info[ldo]->table_len)
		return -EINVAL;

	data = tps6507x_pmic_reg_read(tps, reg);
	if (data < 0)
		return data;

	data &= ~mask;
	data |= vsel;

	return tps6507x_pmic_reg_write(tps, reg, data);
}

static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
					unsigned selector)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int dcdc = rdev_get_id(dev);

	if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
		return -EINVAL;

	if (selector >= tps->info[dcdc]->table_len)
		return -EINVAL;
	else
		return tps->info[dcdc]->table[selector] * 1000;
}

static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
					unsigned selector)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int ldo = rdev_get_id(dev);

	if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
		return -EINVAL;

	if (selector >= tps->info[ldo]->table_len)
		return -EINVAL;
	else
		return tps->info[ldo]->table[selector] * 1000;
}

/* Operations permitted on VDCDCx */
static struct regulator_ops tps6507x_pmic_dcdc_ops = {
	.is_enabled = tps6507x_pmic_dcdc_is_enabled,
	.enable = tps6507x_pmic_dcdc_enable,
	.disable = tps6507x_pmic_dcdc_disable,
	.get_voltage = tps6507x_pmic_dcdc_get_voltage,
	.set_voltage = tps6507x_pmic_dcdc_set_voltage,
	.list_voltage = tps6507x_pmic_dcdc_list_voltage,
};

/* Operations permitted on LDOx */
static struct regulator_ops tps6507x_pmic_ldo_ops = {
	.is_enabled = tps6507x_pmic_ldo_is_enabled,
	.enable = tps6507x_pmic_ldo_enable,
	.disable = tps6507x_pmic_ldo_disable,
	.get_voltage = tps6507x_pmic_ldo_get_voltage,
	.set_voltage = tps6507x_pmic_ldo_set_voltage,
	.list_voltage = tps6507x_pmic_ldo_list_voltage,
};

static __devinit
int tps6507x_pmic_probe(struct platform_device *pdev)
{
	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
	static int desc_id;
	const struct tps_info *info = &tps6507x_pmic_regs[0];
	struct regulator_init_data *init_data;
	struct regulator_dev *rdev;
	struct tps6507x_pmic *tps;
	struct tps6507x_board *tps_board;
	int i;
	int error;

	/**
	 * tps_board points to pmic related constants
	 * coming from the board-evm file.
	 */

	tps_board = dev_get_platdata(tps6507x_dev->dev);
	if (!tps_board)
		return -EINVAL;

	/**
	 * init_data points to array of regulator_init structures
	 * coming from the board-evm file.
	 */
	init_data = tps_board->tps6507x_pmic_init_data;
	if (!init_data)
		return -EINVAL;

	tps = kzalloc(sizeof(*tps), GFP_KERNEL);
	if (!tps)
		return -ENOMEM;

	mutex_init(&tps->io_lock);

	/* common for all regulators */
	tps->mfd = tps6507x_dev;

	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
		/* Register the regulators */
		tps->info[i] = info;
		tps->desc[i].name = info->name;
		tps->desc[i].id = desc_id++;
		tps->desc[i].n_voltages = num_voltages[i];
		tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
		&tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
		tps->desc[i].type = REGULATOR_VOLTAGE;
		tps->desc[i].owner = THIS_MODULE;

		rdev = regulator_register(&tps->desc[i],
					tps6507x_dev->dev, init_data, tps);
		if (IS_ERR(rdev)) {
			dev_err(tps6507x_dev->dev,
				"failed to register %s regulator\n",
				pdev->name);
			error = PTR_ERR(rdev);
			goto fail;
		}

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

	tps6507x_dev->pmic = tps;

	return 0;

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

	kfree(tps);
	return error;
}

/**
 * tps6507x_remove - TPS6507x driver i2c remove handler
 * @client: i2c driver client device structure
 *
 * Unregister TPS driver as an i2c client device driver
 */
static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
{
	struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
	struct tps6507x_pmic *tps = tps6507x_dev->pmic;
	int i;

	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
		regulator_unregister(tps->rdev[i]);

	kfree(tps);

	return 0;
}

static struct platform_driver tps6507x_pmic_driver = {
	.driver = {
		.name = "tps6507x-pmic",
		.owner = THIS_MODULE,
	},
	.probe = tps6507x_pmic_probe,
	.remove = __devexit_p(tps6507x_pmic_remove),
};

/**
 * tps6507x_pmic_init
 *
 * Module init function
 */
static int __init tps6507x_pmic_init(void)
{
	return platform_driver_register(&tps6507x_pmic_driver);
}
subsys_initcall(tps6507x_pmic_init);

/**
 * tps6507x_pmic_cleanup
 *
 * Module exit function
 */
static void __exit tps6507x_pmic_cleanup(void)
{
	platform_driver_unregister(&tps6507x_pmic_driver);
}
module_exit(tps6507x_pmic_cleanup);

MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:tps6507x-pmic");
Commit	Line	Data
3fa5b8e0 AA	1	/*
	2	* tps6507x-regulator.c
	3	*
	4	* Regulator driver for TPS65073 PMIC
	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>
3fa5b8e0	25	#include <linux/delay.h>
5a0e3ad6	26	#include <linux/slab.h>
d183fcc9	27	#include <linux/mfd/tps6507x.h>
3fa5b8e0 AA	28
	29	/* DCDC's */
	30	#define TPS6507X_DCDC_1 0
	31	#define TPS6507X_DCDC_2 1
	32	#define TPS6507X_DCDC_3 2
	33	/* LDOs */
	34	#define TPS6507X_LDO_1 3
	35	#define TPS6507X_LDO_2 4
	36
	37	#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
	38
	39	/* Number of step-down converters available */
	40	#define TPS6507X_NUM_DCDC 3
	41	/* Number of LDO voltage regulators available */
	42	#define TPS6507X_NUM_LDO 2
	43	/* Number of total regulators available */
	44	#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
	45
	46	/* Supported voltage values for regulators (in milliVolts) */
	47	static const u16 VDCDCx_VSEL_table[] = {
	48	725, 750, 775, 800,
	49	825, 850, 875, 900,
	50	925, 950, 975, 1000,
	51	1025, 1050, 1075, 1100,
	52	1125, 1150, 1175, 1200,
	53	1225, 1250, 1275, 1300,
	54	1325, 1350, 1375, 1400,
	55	1425, 1450, 1475, 1500,
	56	1550, 1600, 1650, 1700,
	57	1750, 1800, 1850, 1900,
	58	1950, 2000, 2050, 2100,
	59	2150, 2200, 2250, 2300,
	60	2350, 2400, 2450, 2500,
	61	2550, 2600, 2650, 2700,
	62	2750, 2800, 2850, 2900,
	63	3000, 3100, 3200, 3300,
	64	};
	65
	66	static const u16 LDO1_VSEL_table[] = {
	67	1000, 1100, 1200, 1250,
	68	1300, 1350, 1400, 1500,
	69	1600, 1800, 2500, 2750,
	70	2800, 3000, 3100, 3300,
	71	};
	72
	73	static const u16 LDO2_VSEL_table[] = {
	74	725, 750, 775, 800,
	75	825, 850, 875, 900,
	76	925, 950, 975, 1000,
	77	1025, 1050, 1075, 1100,
	78	1125, 1150, 1175, 1200,
	79	1225, 1250, 1275, 1300,
	80	1325, 1350, 1375, 1400,
	81	1425, 1450, 1475, 1500,
	82	1550, 1600, 1650, 1700,
	83	1750, 1800, 1850, 1900,
	84	1950, 2000, 2050, 2100,
	85	2150, 2200, 2250, 2300,
	86	2350, 2400, 2450, 2500,
	87	2550, 2600, 2650, 2700,
	88	2750, 2800, 2850, 2900,
	89	3000, 3100, 3200, 3300,
	90	};
	91
92	static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
93	ARRAY_SIZE(VDCDCx_VSEL_table),
94	ARRAY_SIZE(VDCDCx_VSEL_table),
95	ARRAY_SIZE(LDO1_VSEL_table),
96	ARRAY_SIZE(LDO2_VSEL_table)};
97
98	struct tps_info {
99	const char *name;
100	unsigned min_uV;
101	unsigned max_uV;
102	u8 table_len;
103	const u16 *table;
104	};
105
31dd6a26 TF	106	static const struct tps_info tps6507x_pmic_regs[] = {
	107	{
	108	.name = "VDCDC1",
	109	.min_uV = 725000,
	110	.max_uV = 3300000,
	111	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	112	.table = VDCDCx_VSEL_table,
	113	},
	114	{
	115	.name = "VDCDC2",
	116	.min_uV = 725000,
	117	.max_uV = 3300000,
	118	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	119	.table = VDCDCx_VSEL_table,
	120	},
	121	{
	122	.name = "VDCDC3",
	123	.min_uV = 725000,
	124	.max_uV = 3300000,
	125	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	126	.table = VDCDCx_VSEL_table,
	127	},
	128	{
	129	.name = "LDO1",
	130	.min_uV = 1000000,
	131	.max_uV = 3300000,
	132	.table_len = ARRAY_SIZE(LDO1_VSEL_table),
	133	.table = LDO1_VSEL_table,
	134	},
	135	{
	136	.name = "LDO2",
	137	.min_uV = 725000,
	138	.max_uV = 3300000,
	139	.table_len = ARRAY_SIZE(LDO2_VSEL_table),
	140	.table = LDO2_VSEL_table,
	141	},
	142	};
	143
4ce5ba5b	144	struct tps6507x_pmic {
3fa5b8e0	145	struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
31dd6a26	146	struct tps6507x_dev *mfd;
3fa5b8e0 AA	147	struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
	148	const struct tps_info *info[TPS6507X_NUM_REGULATOR];
	149	struct mutex io_lock;
	150	};
4ce5ba5b	151	static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0	152	{
31dd6a26 TF	153	u8 val;
	154	int err;
	155
	156	err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
	157
	158	if (err)
	159	return err;
	160
	161	return val;
3fa5b8e0 AA	162	}
3fa5b8e0 AA	163
4ce5ba5b	164	static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0	165	{
31dd6a26	166	return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
3fa5b8e0 AA	167	}
3fa5b8e0 AA	168
4ce5ba5b	169	static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	170	{
	171	int err, data;
	172
	173	mutex_lock(&tps->io_lock);
	174
4ce5ba5b	175	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	176	if (data < 0) {
31dd6a26	177	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	178	err = data;
	179	goto out;
	180	}
	181
	182	data \|= mask;
4ce5ba5b	183	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	184	if (err)
31dd6a26	185	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	186
	187	out:
	188	mutex_unlock(&tps->io_lock);
	189	return err;
	190	}
	191
4ce5ba5b	192	static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	193	{
	194	int err, data;
	195
	196	mutex_lock(&tps->io_lock);
	197
4ce5ba5b	198	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	199	if (data < 0) {
31dd6a26	200	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	201	err = data;
	202	goto out;
	203	}
	204
	205	data &= ~mask;
4ce5ba5b	206	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	207	if (err)
31dd6a26	208	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	209
	210	out:
	211	mutex_unlock(&tps->io_lock);
	212	return err;
	213	}
	214
4ce5ba5b	215	static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0 AA	216	{
	217	int data;
	218
	219	mutex_lock(&tps->io_lock);
	220
4ce5ba5b	221	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	222	if (data < 0)
31dd6a26	223	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	224
	225	mutex_unlock(&tps->io_lock);
	226	return data;
	227	}
	228
4ce5ba5b	229	static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0 AA	230	{
	231	int err;
	232
	233	mutex_lock(&tps->io_lock);
	234
4ce5ba5b	235	err = tps6507x_pmic_write(tps, reg, val);
3fa5b8e0	236	if (err < 0)
31dd6a26	237	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	238
	239	mutex_unlock(&tps->io_lock);
	240	return err;
	241	}
	242
4ce5ba5b	243	static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
3fa5b8e0	244	{
4ce5ba5b	245	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	246	int data, dcdc = rdev_get_id(dev);
	247	u8 shift;
	248
	249	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	250	return -EINVAL;
	251
	252	shift = TPS6507X_MAX_REG_ID - dcdc;
4ce5ba5b	253	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	254
	255	if (data < 0)
	256	return data;
	257	else
	258	return (data & 1<<shift) ? 1 : 0;
	259	}
	260
4ce5ba5b	261	static int tps6507x_pmic_ldo_is_enabled(struct regulator_dev *dev)
3fa5b8e0	262	{
4ce5ba5b	263	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	264	int data, ldo = rdev_get_id(dev);
	265	u8 shift;
	266
	267	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	268	return -EINVAL;
	269
	270	shift = TPS6507X_MAX_REG_ID - ldo;
4ce5ba5b	271	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	272
	273	if (data < 0)
	274	return data;
	275	else
	276	return (data & 1<<shift) ? 1 : 0;
	277	}
	278
4ce5ba5b	279	static int tps6507x_pmic_dcdc_enable(struct regulator_dev *dev)
3fa5b8e0	280	{
4ce5ba5b	281	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	282	int dcdc = rdev_get_id(dev);
	283	u8 shift;
	284
	285	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	286	return -EINVAL;
	287
	288	shift = TPS6507X_MAX_REG_ID - dcdc;
4ce5ba5b	289	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	290	}
3fa5b8e0 AA	291
4ce5ba5b	292	static int tps6507x_pmic_dcdc_disable(struct regulator_dev *dev)
3fa5b8e0	293	{
4ce5ba5b	294	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	295	int dcdc = rdev_get_id(dev);
	296	u8 shift;
	297
	298	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	299	return -EINVAL;
	300
	301	shift = TPS6507X_MAX_REG_ID - dcdc;
4ce5ba5b TF	302	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	303	1 << shift);
3fa5b8e0 AA	304	}
3fa5b8e0 AA	305
4ce5ba5b	306	static int tps6507x_pmic_ldo_enable(struct regulator_dev *dev)
3fa5b8e0	307	{
4ce5ba5b	308	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	309	int ldo = rdev_get_id(dev);
	310	u8 shift;
	311
	312	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	313	return -EINVAL;
	314
	315	shift = TPS6507X_MAX_REG_ID - ldo;
4ce5ba5b	316	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	317	}
3fa5b8e0 AA	318
4ce5ba5b	319	static int tps6507x_pmic_ldo_disable(struct regulator_dev *dev)
3fa5b8e0	320	{
4ce5ba5b	321	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	322	int ldo = rdev_get_id(dev);
	323	u8 shift;
	324
	325	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	326	return -EINVAL;
	327
	328	shift = TPS6507X_MAX_REG_ID - ldo;
4ce5ba5b TF	329	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	330	1 << shift);
3fa5b8e0 AA	331	}
3fa5b8e0 AA	332
4ce5ba5b	333	static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
3fa5b8e0	334	{
4ce5ba5b	335	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	336	int data, dcdc = rdev_get_id(dev);
	337	u8 reg;
	338
	339	switch (dcdc) {
	340	case TPS6507X_DCDC_1:
	341	reg = TPS6507X_REG_DEFDCDC1;
	342	break;
	343	case TPS6507X_DCDC_2:
	344	reg = TPS6507X_REG_DEFDCDC2_LOW;
	345	break;
	346	case TPS6507X_DCDC_3:
	347	reg = TPS6507X_REG_DEFDCDC3_LOW;
	348	break;
	349	default:
	350	return -EINVAL;
	351	}
	352
4ce5ba5b	353	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	354	if (data < 0)
	355	return data;
	356
	357	data &= TPS6507X_DEFDCDCX_DCDC_MASK;
	358	return tps->info[dcdc]->table[data] * 1000;
	359	}
	360
4ce5ba5b	361	static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	362	int min_uV, int max_uV)
3fa5b8e0 AA	363	{
4ce5ba5b	364	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	365	int data, vsel, dcdc = rdev_get_id(dev);
	366	u8 reg;
	367
	368	switch (dcdc) {
	369	case TPS6507X_DCDC_1:
	370	reg = TPS6507X_REG_DEFDCDC1;
	371	break;
	372	case TPS6507X_DCDC_2:
	373	reg = TPS6507X_REG_DEFDCDC2_LOW;
	374	break;
	375	case TPS6507X_DCDC_3:
	376	reg = TPS6507X_REG_DEFDCDC3_LOW;
	377	break;
	378	default:
	379	return -EINVAL;
	380	}
	381
	382	if (min_uV < tps->info[dcdc]->min_uV
	383	\|\| min_uV > tps->info[dcdc]->max_uV)
	384	return -EINVAL;
	385	if (max_uV < tps->info[dcdc]->min_uV
	386	\|\| max_uV > tps->info[dcdc]->max_uV)
	387	return -EINVAL;
	388
	389	for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
	390	int mV = tps->info[dcdc]->table[vsel];
	391	int uV = mV * 1000;
	392
	393	/* Break at the first in-range value */
	394	if (min_uV <= uV && uV <= max_uV)
	395	break;
	396	}
	397
	398	/* write to the register in case we found a match */
	399	if (vsel == tps->info[dcdc]->table_len)
	400	return -EINVAL;
	401
4ce5ba5b	402	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	403	if (data < 0)
	404	return data;
	405
	406	data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
	407	data \|= vsel;
	408
4ce5ba5b	409	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	410	}
3fa5b8e0 AA	411
4ce5ba5b	412	static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
3fa5b8e0	413	{
4ce5ba5b	414	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	415	int data, ldo = rdev_get_id(dev);
	416	u8 reg, mask;
	417
	418	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	419	return -EINVAL;
	420	else {
	421	reg = (ldo == TPS6507X_LDO_1 ?
	422	TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
	423	mask = (ldo == TPS6507X_LDO_1 ?
	424	TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
	425	TPS6507X_REG_DEFLDO2_LDO2_MASK);
	426	}
	427
4ce5ba5b	428	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	429	if (data < 0)
	430	return data;
	431
	432	data &= mask;
	433	return tps->info[ldo]->table[data] * 1000;
	434	}
	435
4ce5ba5b	436	static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	437	int min_uV, int max_uV)
3fa5b8e0 AA	438	{
4ce5ba5b	439	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	440	int data, vsel, ldo = rdev_get_id(dev);
	441	u8 reg, mask;
	442
	443	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	444	return -EINVAL;
	445	else {
	446	reg = (ldo == TPS6507X_LDO_1 ?
	447	TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
	448	mask = (ldo == TPS6507X_LDO_1 ?
	449	TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
	450	TPS6507X_REG_DEFLDO2_LDO2_MASK);
	451	}
	452
	453	if (min_uV < tps->info[ldo]->min_uV \|\| min_uV > tps->info[ldo]->max_uV)
	454	return -EINVAL;
	455	if (max_uV < tps->info[ldo]->min_uV \|\| max_uV > tps->info[ldo]->max_uV)
	456	return -EINVAL;
	457
	458	for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
	459	int mV = tps->info[ldo]->table[vsel];
	460	int uV = mV * 1000;
	461
	462	/* Break at the first in-range value */
	463	if (min_uV <= uV && uV <= max_uV)
	464	break;
	465	}
	466
	467	if (vsel == tps->info[ldo]->table_len)
	468	return -EINVAL;
	469
4ce5ba5b	470	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	471	if (data < 0)
	472	return data;
	473
	474	data &= ~mask;
	475	data \|= vsel;
	476
4ce5ba5b	477	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	478	}
3fa5b8e0 AA	479
4ce5ba5b	480	static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	481	unsigned selector)
3fa5b8e0 AA	482	{
4ce5ba5b	483	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	484	int dcdc = rdev_get_id(dev);
	485
	486	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	487	return -EINVAL;
	488
	489	if (selector >= tps->info[dcdc]->table_len)
	490	return -EINVAL;
	491	else
	492	return tps->info[dcdc]->table[selector] * 1000;
	493	}
	494
4ce5ba5b	495	static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	496	unsigned selector)
3fa5b8e0 AA	497	{
4ce5ba5b	498	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	499	int ldo = rdev_get_id(dev);
	500
	501	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	502	return -EINVAL;
	503
	504	if (selector >= tps->info[ldo]->table_len)
	505	return -EINVAL;
	506	else
	507	return tps->info[ldo]->table[selector] * 1000;
	508	}
	509
	510	/* Operations permitted on VDCDCx */
4ce5ba5b TF	511	static struct regulator_ops tps6507x_pmic_dcdc_ops = {
	512	.is_enabled = tps6507x_pmic_dcdc_is_enabled,
	513	.enable = tps6507x_pmic_dcdc_enable,
	514	.disable = tps6507x_pmic_dcdc_disable,
	515	.get_voltage = tps6507x_pmic_dcdc_get_voltage,
	516	.set_voltage = tps6507x_pmic_dcdc_set_voltage,
	517	.list_voltage = tps6507x_pmic_dcdc_list_voltage,
3fa5b8e0 AA	518	};
	519
	520	/* Operations permitted on LDOx */
4ce5ba5b TF	521	static struct regulator_ops tps6507x_pmic_ldo_ops = {
	522	.is_enabled = tps6507x_pmic_ldo_is_enabled,
	523	.enable = tps6507x_pmic_ldo_enable,
	524	.disable = tps6507x_pmic_ldo_disable,
	525	.get_voltage = tps6507x_pmic_ldo_get_voltage,
	526	.set_voltage = tps6507x_pmic_ldo_set_voltage,
	527	.list_voltage = tps6507x_pmic_ldo_list_voltage,
3fa5b8e0 AA	528	};
3fa5b8e0 AA	529
31dd6a26 TF	530	static __devinit
31dd6a26 TF	531	int tps6507x_pmic_probe(struct platform_device *pdev)
3fa5b8e0	532	{
31dd6a26	533	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
3fa5b8e0	534	static int desc_id;
31dd6a26	535	const struct tps_info *info = &tps6507x_pmic_regs[0];
3fa5b8e0 AA	536	struct regulator_init_data *init_data;
3fa5b8e0 AA	537	struct regulator_dev *rdev;
4ce5ba5b	538	struct tps6507x_pmic *tps;
0bc20bba	539	struct tps6507x_board *tps_board;
3fa5b8e0	540	int i;
56c23492	541	int error;
3fa5b8e0	542
0bc20bba TF	543	/**
	544	* tps_board points to pmic related constants
	545	* coming from the board-evm file.
	546	*/
	547
31dd6a26	548	tps_board = dev_get_platdata(tps6507x_dev->dev);
0bc20bba TF	549	if (!tps_board)
	550	return -EINVAL;
	551
3fa5b8e0 AA	552	/**
	553	* init_data points to array of regulator_init structures
	554	* coming from the board-evm file.
	555	*/
0bc20bba	556	init_data = tps_board->tps6507x_pmic_init_data;
3fa5b8e0	557	if (!init_data)
0bc20bba	558	return -EINVAL;
3fa5b8e0 AA	559
	560	tps = kzalloc(sizeof(*tps), GFP_KERNEL);
	561	if (!tps)
	562	return -ENOMEM;
	563
	564	mutex_init(&tps->io_lock);
	565
	566	/* common for all regulators */
31dd6a26	567	tps->mfd = tps6507x_dev;
3fa5b8e0 AA	568
	569	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
	570	/* Register the regulators */
	571	tps->info[i] = info;
	572	tps->desc[i].name = info->name;
	573	tps->desc[i].id = desc_id++;
	574	tps->desc[i].n_voltages = num_voltages[i];
	575	tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
4ce5ba5b	576	&tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
3fa5b8e0 AA	577	tps->desc[i].type = REGULATOR_VOLTAGE;
	578	tps->desc[i].owner = THIS_MODULE;
	579
	580	rdev = regulator_register(&tps->desc[i],
31dd6a26	581	tps6507x_dev->dev, init_data, tps);
3fa5b8e0	582	if (IS_ERR(rdev)) {
31dd6a26 TF	583	dev_err(tps6507x_dev->dev,
	584	"failed to register %s regulator\n",
	585	pdev->name);
56c23492 DT	586	error = PTR_ERR(rdev);
56c23492 DT	587	goto fail;
3fa5b8e0 AA	588	}
	589
	590	/* Save regulator for cleanup */
	591	tps->rdev[i] = rdev;
	592	}
	593
31dd6a26	594	tps6507x_dev->pmic = tps;
3fa5b8e0 AA	595
3fa5b8e0 AA	596	return 0;
56c23492 DT	597
	598	fail:
	599	while (--i >= 0)
	600	regulator_unregister(tps->rdev[i]);
	601
	602	kfree(tps);
	603	return error;
3fa5b8e0 AA	604	}
	605
	606	/**
4ce5ba5b	607	* tps6507x_remove - TPS6507x driver i2c remove handler
3fa5b8e0 AA	608	* @client: i2c driver client device structure
	609	*
	610	* Unregister TPS driver as an i2c client device driver
	611	*/
31dd6a26	612	static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
3fa5b8e0	613	{
31dd6a26 TF	614	struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
31dd6a26 TF	615	struct tps6507x_pmic *tps = tps6507x_dev->pmic;
3fa5b8e0 AA	616	int i;
	617
	618	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
	619	regulator_unregister(tps->rdev[i]);
	620
3fa5b8e0 AA	621	kfree(tps);
	622
	623	return 0;
	624	}
	625
31dd6a26	626	static struct platform_driver tps6507x_pmic_driver = {
3fa5b8e0	627	.driver = {
31dd6a26	628	.name = "tps6507x-pmic",
3fa5b8e0 AA	629	.owner = THIS_MODULE,
3fa5b8e0 AA	630	},
4ce5ba5b TF	631	.probe = tps6507x_pmic_probe,
4ce5ba5b TF	632	.remove = __devexit_p(tps6507x_pmic_remove),
3fa5b8e0 AA	633	};
	634
	635	/**
4ce5ba5b	636	* tps6507x_pmic_init
3fa5b8e0 AA	637	*
	638	* Module init function
	639	*/
4ce5ba5b	640	static int __init tps6507x_pmic_init(void)
3fa5b8e0	641	{
31dd6a26	642	return platform_driver_register(&tps6507x_pmic_driver);
3fa5b8e0	643	}
4ce5ba5b	644	subsys_initcall(tps6507x_pmic_init);
3fa5b8e0 AA	645
3fa5b8e0 AA	646	/**
4ce5ba5b	647	* tps6507x_pmic_cleanup
3fa5b8e0 AA	648	*
	649	* Module exit function
	650	*/
4ce5ba5b	651	static void __exit tps6507x_pmic_cleanup(void)
3fa5b8e0	652	{
31dd6a26	653	platform_driver_unregister(&tps6507x_pmic_driver);
3fa5b8e0	654	}
4ce5ba5b	655	module_exit(tps6507x_pmic_cleanup);
3fa5b8e0 AA	656
	657	MODULE_AUTHOR("Texas Instruments");
	658	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
9e108d33	659	MODULE_LICENSE("GPL v2");
31dd6a26	660	MODULE_ALIAS("platform:tps6507x-pmic");