[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/regulator/tps6507x.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;

	/* Does DCDC high or the low register defines output voltage? */
	bool defdcdc_default;
};

static 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];
	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:
		if (tps->info[dcdc]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC2_HIGH;
		else
			reg = TPS6507X_REG_DEFDCDC2_LOW;
		break;
	case TPS6507X_DCDC_3:
		if (tps->info[dcdc]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC3_HIGH;
		else
			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:
		if (tps->info[dcdc]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC2_HIGH;
		else
			reg = TPS6507X_REG_DEFDCDC2_LOW;
		break;
	case TPS6507X_DCDC_3:
		if (tps->info[dcdc]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC3_HIGH;
		else
			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;
	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;
		if (init_data->driver_data) {
			struct tps6507x_reg_platform_data *data =
							init_data->driver_data;
			tps->info[i]->defdcdc_default = data->defdcdc_default;
		}

		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>
7d14831e	25	#include <linux/regulator/tps6507x.h>
3fa5b8e0	26	#include <linux/delay.h>
5a0e3ad6	27	#include <linux/slab.h>
d183fcc9	28	#include <linux/mfd/tps6507x.h>
3fa5b8e0 AA	29
	30	/* DCDC's */
	31	#define TPS6507X_DCDC_1 0
	32	#define TPS6507X_DCDC_2 1
	33	#define TPS6507X_DCDC_3 2
	34	/* LDOs */
	35	#define TPS6507X_LDO_1 3
	36	#define TPS6507X_LDO_2 4
	37
	38	#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
	39
	40	/* Number of step-down converters available */
	41	#define TPS6507X_NUM_DCDC 3
	42	/* Number of LDO voltage regulators available */
	43	#define TPS6507X_NUM_LDO 2
	44	/* Number of total regulators available */
	45	#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
	46
	47	/* Supported voltage values for regulators (in milliVolts) */
	48	static const u16 VDCDCx_VSEL_table[] = {
	49	725, 750, 775, 800,
	50	825, 850, 875, 900,
	51	925, 950, 975, 1000,
	52	1025, 1050, 1075, 1100,
	53	1125, 1150, 1175, 1200,
	54	1225, 1250, 1275, 1300,
	55	1325, 1350, 1375, 1400,
	56	1425, 1450, 1475, 1500,
	57	1550, 1600, 1650, 1700,
	58	1750, 1800, 1850, 1900,
	59	1950, 2000, 2050, 2100,
	60	2150, 2200, 2250, 2300,
	61	2350, 2400, 2450, 2500,
	62	2550, 2600, 2650, 2700,
	63	2750, 2800, 2850, 2900,
	64	3000, 3100, 3200, 3300,
	65	};
	66
	67	static const u16 LDO1_VSEL_table[] = {
	68	1000, 1100, 1200, 1250,
	69	1300, 1350, 1400, 1500,
	70	1600, 1800, 2500, 2750,
	71	2800, 3000, 3100, 3300,
	72	};
	73
	74	static const u16 LDO2_VSEL_table[] = {
	75	725, 750, 775, 800,
	76	825, 850, 875, 900,
	77	925, 950, 975, 1000,
	78	1025, 1050, 1075, 1100,
	79	1125, 1150, 1175, 1200,
	80	1225, 1250, 1275, 1300,
	81	1325, 1350, 1375, 1400,
	82	1425, 1450, 1475, 1500,
	83	1550, 1600, 1650, 1700,
	84	1750, 1800, 1850, 1900,
	85	1950, 2000, 2050, 2100,
	86	2150, 2200, 2250, 2300,
	87	2350, 2400, 2450, 2500,
	88	2550, 2600, 2650, 2700,
	89	2750, 2800, 2850, 2900,
	90	3000, 3100, 3200, 3300,
	91	};
	92
93	static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
94	ARRAY_SIZE(VDCDCx_VSEL_table),
95	ARRAY_SIZE(VDCDCx_VSEL_table),
96	ARRAY_SIZE(LDO1_VSEL_table),
97	ARRAY_SIZE(LDO2_VSEL_table)};
98
99	struct tps_info {
100	const char *name;
101	unsigned min_uV;
102	unsigned max_uV;
103	u8 table_len;
104	const u16 *table;
7d14831e AA	105
	106	/* Does DCDC high or the low register defines output voltage? */
	107	bool defdcdc_default;
3fa5b8e0 AA	108	};
3fa5b8e0 AA	109
7d14831e	110	static struct tps_info tps6507x_pmic_regs[] = {
31dd6a26 TF	111	{
	112	.name = "VDCDC1",
	113	.min_uV = 725000,
	114	.max_uV = 3300000,
	115	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	116	.table = VDCDCx_VSEL_table,
	117	},
	118	{
	119	.name = "VDCDC2",
	120	.min_uV = 725000,
	121	.max_uV = 3300000,
	122	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	123	.table = VDCDCx_VSEL_table,
	124	},
	125	{
	126	.name = "VDCDC3",
	127	.min_uV = 725000,
	128	.max_uV = 3300000,
	129	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	130	.table = VDCDCx_VSEL_table,
	131	},
	132	{
	133	.name = "LDO1",
	134	.min_uV = 1000000,
	135	.max_uV = 3300000,
	136	.table_len = ARRAY_SIZE(LDO1_VSEL_table),
	137	.table = LDO1_VSEL_table,
	138	},
	139	{
	140	.name = "LDO2",
	141	.min_uV = 725000,
	142	.max_uV = 3300000,
	143	.table_len = ARRAY_SIZE(LDO2_VSEL_table),
	144	.table = LDO2_VSEL_table,
	145	},
	146	};
	147
4ce5ba5b	148	struct tps6507x_pmic {
3fa5b8e0	149	struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
31dd6a26	150	struct tps6507x_dev *mfd;
3fa5b8e0	151	struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
7d14831e	152	struct tps_info *info[TPS6507X_NUM_REGULATOR];
3fa5b8e0 AA	153	struct mutex io_lock;
3fa5b8e0 AA	154	};
4ce5ba5b	155	static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0	156	{
31dd6a26 TF	157	u8 val;
	158	int err;
	159
	160	err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
	161
	162	if (err)
	163	return err;
	164
	165	return val;
3fa5b8e0 AA	166	}
3fa5b8e0 AA	167
4ce5ba5b	168	static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0	169	{
31dd6a26	170	return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
3fa5b8e0 AA	171	}
3fa5b8e0 AA	172
4ce5ba5b	173	static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	174	{
	175	int err, data;
	176
	177	mutex_lock(&tps->io_lock);
	178
4ce5ba5b	179	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	180	if (data < 0) {
31dd6a26	181	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	182	err = data;
	183	goto out;
	184	}
	185
	186	data \|= mask;
4ce5ba5b	187	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	188	if (err)
31dd6a26	189	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	190
	191	out:
	192	mutex_unlock(&tps->io_lock);
	193	return err;
	194	}
	195
4ce5ba5b	196	static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	197	{
	198	int err, data;
	199
	200	mutex_lock(&tps->io_lock);
	201
4ce5ba5b	202	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	203	if (data < 0) {
31dd6a26	204	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	205	err = data;
	206	goto out;
	207	}
	208
	209	data &= ~mask;
4ce5ba5b	210	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	211	if (err)
31dd6a26	212	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	213
	214	out:
	215	mutex_unlock(&tps->io_lock);
	216	return err;
	217	}
	218
4ce5ba5b	219	static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0 AA	220	{
	221	int data;
	222
	223	mutex_lock(&tps->io_lock);
	224
4ce5ba5b	225	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	226	if (data < 0)
31dd6a26	227	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	228
	229	mutex_unlock(&tps->io_lock);
	230	return data;
	231	}
	232
4ce5ba5b	233	static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0 AA	234	{
	235	int err;
	236
	237	mutex_lock(&tps->io_lock);
	238
4ce5ba5b	239	err = tps6507x_pmic_write(tps, reg, val);
3fa5b8e0	240	if (err < 0)
31dd6a26	241	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	242
	243	mutex_unlock(&tps->io_lock);
	244	return err;
	245	}
	246
4ce5ba5b	247	static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
3fa5b8e0	248	{
4ce5ba5b	249	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	250	int data, dcdc = rdev_get_id(dev);
	251	u8 shift;
	252
	253	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	254	return -EINVAL;
	255
	256	shift = TPS6507X_MAX_REG_ID - dcdc;
4ce5ba5b	257	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	258
	259	if (data < 0)
	260	return data;
	261	else
	262	return (data & 1<<shift) ? 1 : 0;
	263	}
	264
4ce5ba5b	265	static int tps6507x_pmic_ldo_is_enabled(struct regulator_dev *dev)
3fa5b8e0	266	{
4ce5ba5b	267	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	268	int data, ldo = rdev_get_id(dev);
	269	u8 shift;
	270
	271	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	272	return -EINVAL;
	273
	274	shift = TPS6507X_MAX_REG_ID - ldo;
4ce5ba5b	275	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	276
	277	if (data < 0)
	278	return data;
	279	else
	280	return (data & 1<<shift) ? 1 : 0;
	281	}
	282
4ce5ba5b	283	static int tps6507x_pmic_dcdc_enable(struct regulator_dev *dev)
3fa5b8e0	284	{
4ce5ba5b	285	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	286	int dcdc = rdev_get_id(dev);
	287	u8 shift;
	288
	289	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	290	return -EINVAL;
	291
	292	shift = TPS6507X_MAX_REG_ID - dcdc;
4ce5ba5b	293	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	294	}
3fa5b8e0 AA	295
4ce5ba5b	296	static int tps6507x_pmic_dcdc_disable(struct regulator_dev *dev)
3fa5b8e0	297	{
4ce5ba5b	298	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	299	int dcdc = rdev_get_id(dev);
	300	u8 shift;
	301
	302	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	303	return -EINVAL;
	304
	305	shift = TPS6507X_MAX_REG_ID - dcdc;
4ce5ba5b TF	306	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	307	1 << shift);
3fa5b8e0 AA	308	}
3fa5b8e0 AA	309
4ce5ba5b	310	static int tps6507x_pmic_ldo_enable(struct regulator_dev *dev)
3fa5b8e0	311	{
4ce5ba5b	312	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	313	int ldo = rdev_get_id(dev);
	314	u8 shift;
	315
	316	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	317	return -EINVAL;
	318
	319	shift = TPS6507X_MAX_REG_ID - ldo;
4ce5ba5b	320	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	321	}
3fa5b8e0 AA	322
4ce5ba5b	323	static int tps6507x_pmic_ldo_disable(struct regulator_dev *dev)
3fa5b8e0	324	{
4ce5ba5b	325	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	326	int ldo = rdev_get_id(dev);
	327	u8 shift;
	328
	329	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	330	return -EINVAL;
	331
	332	shift = TPS6507X_MAX_REG_ID - ldo;
4ce5ba5b TF	333	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	334	1 << shift);
3fa5b8e0 AA	335	}
3fa5b8e0 AA	336
4ce5ba5b	337	static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
3fa5b8e0	338	{
4ce5ba5b	339	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	340	int data, dcdc = rdev_get_id(dev);
	341	u8 reg;
	342
	343	switch (dcdc) {
	344	case TPS6507X_DCDC_1:
	345	reg = TPS6507X_REG_DEFDCDC1;
	346	break;
	347	case TPS6507X_DCDC_2:
7d14831e AA	348	if (tps->info[dcdc]->defdcdc_default)
	349	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	350	else
	351	reg = TPS6507X_REG_DEFDCDC2_LOW;
3fa5b8e0 AA	352	break;
3fa5b8e0 AA	353	case TPS6507X_DCDC_3:
7d14831e AA	354	if (tps->info[dcdc]->defdcdc_default)
	355	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	356	else
	357	reg = TPS6507X_REG_DEFDCDC3_LOW;
3fa5b8e0 AA	358	break;
	359	default:
	360	return -EINVAL;
	361	}
	362
4ce5ba5b	363	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	364	if (data < 0)
	365	return data;
	366
	367	data &= TPS6507X_DEFDCDCX_DCDC_MASK;
	368	return tps->info[dcdc]->table[data] * 1000;
	369	}
	370
4ce5ba5b	371	static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	372	int min_uV, int max_uV)
3fa5b8e0 AA	373	{
4ce5ba5b	374	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	375	int data, vsel, dcdc = rdev_get_id(dev);
	376	u8 reg;
	377
	378	switch (dcdc) {
	379	case TPS6507X_DCDC_1:
	380	reg = TPS6507X_REG_DEFDCDC1;
	381	break;
	382	case TPS6507X_DCDC_2:
7d14831e AA	383	if (tps->info[dcdc]->defdcdc_default)
	384	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	385	else
	386	reg = TPS6507X_REG_DEFDCDC2_LOW;
3fa5b8e0 AA	387	break;
3fa5b8e0 AA	388	case TPS6507X_DCDC_3:
7d14831e AA	389	if (tps->info[dcdc]->defdcdc_default)
	390	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	391	else
	392	reg = TPS6507X_REG_DEFDCDC3_LOW;
3fa5b8e0 AA	393	break;
	394	default:
	395	return -EINVAL;
	396	}
	397
	398	if (min_uV < tps->info[dcdc]->min_uV
	399	\|\| min_uV > tps->info[dcdc]->max_uV)
	400	return -EINVAL;
	401	if (max_uV < tps->info[dcdc]->min_uV
	402	\|\| max_uV > tps->info[dcdc]->max_uV)
	403	return -EINVAL;
	404
	405	for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
	406	int mV = tps->info[dcdc]->table[vsel];
	407	int uV = mV * 1000;
	408
	409	/* Break at the first in-range value */
	410	if (min_uV <= uV && uV <= max_uV)
	411	break;
	412	}
	413
	414	/* write to the register in case we found a match */
	415	if (vsel == tps->info[dcdc]->table_len)
	416	return -EINVAL;
	417
4ce5ba5b	418	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	419	if (data < 0)
	420	return data;
	421
	422	data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
	423	data \|= vsel;
	424
4ce5ba5b	425	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	426	}
3fa5b8e0 AA	427
4ce5ba5b	428	static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
3fa5b8e0	429	{
4ce5ba5b	430	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	431	int data, ldo = rdev_get_id(dev);
	432	u8 reg, mask;
	433
	434	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	435	return -EINVAL;
	436	else {
	437	reg = (ldo == TPS6507X_LDO_1 ?
	438	TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
	439	mask = (ldo == TPS6507X_LDO_1 ?
	440	TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
	441	TPS6507X_REG_DEFLDO2_LDO2_MASK);
	442	}
	443
4ce5ba5b	444	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	445	if (data < 0)
	446	return data;
	447
	448	data &= mask;
	449	return tps->info[ldo]->table[data] * 1000;
	450	}
	451
4ce5ba5b	452	static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	453	int min_uV, int max_uV)
3fa5b8e0 AA	454	{
4ce5ba5b	455	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	456	int data, vsel, ldo = rdev_get_id(dev);
	457	u8 reg, mask;
	458
	459	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	460	return -EINVAL;
	461	else {
	462	reg = (ldo == TPS6507X_LDO_1 ?
	463	TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
	464	mask = (ldo == TPS6507X_LDO_1 ?
	465	TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
	466	TPS6507X_REG_DEFLDO2_LDO2_MASK);
	467	}
	468
	469	if (min_uV < tps->info[ldo]->min_uV \|\| min_uV > tps->info[ldo]->max_uV)
	470	return -EINVAL;
	471	if (max_uV < tps->info[ldo]->min_uV \|\| max_uV > tps->info[ldo]->max_uV)
	472	return -EINVAL;
	473
	474	for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
	475	int mV = tps->info[ldo]->table[vsel];
	476	int uV = mV * 1000;
	477
	478	/* Break at the first in-range value */
	479	if (min_uV <= uV && uV <= max_uV)
	480	break;
	481	}
	482
	483	if (vsel == tps->info[ldo]->table_len)
	484	return -EINVAL;
	485
4ce5ba5b	486	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	487	if (data < 0)
	488	return data;
	489
	490	data &= ~mask;
	491	data \|= vsel;
	492
4ce5ba5b	493	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	494	}
3fa5b8e0 AA	495
4ce5ba5b	496	static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	497	unsigned selector)
3fa5b8e0 AA	498	{
4ce5ba5b	499	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	500	int dcdc = rdev_get_id(dev);
	501
	502	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	503	return -EINVAL;
	504
	505	if (selector >= tps->info[dcdc]->table_len)
	506	return -EINVAL;
	507	else
	508	return tps->info[dcdc]->table[selector] * 1000;
	509	}
	510
4ce5ba5b	511	static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	512	unsigned selector)
3fa5b8e0 AA	513	{
4ce5ba5b	514	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	515	int ldo = rdev_get_id(dev);
	516
	517	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	518	return -EINVAL;
	519
	520	if (selector >= tps->info[ldo]->table_len)
	521	return -EINVAL;
	522	else
	523	return tps->info[ldo]->table[selector] * 1000;
	524	}
	525
	526	/* Operations permitted on VDCDCx */
4ce5ba5b TF	527	static struct regulator_ops tps6507x_pmic_dcdc_ops = {
	528	.is_enabled = tps6507x_pmic_dcdc_is_enabled,
	529	.enable = tps6507x_pmic_dcdc_enable,
	530	.disable = tps6507x_pmic_dcdc_disable,
	531	.get_voltage = tps6507x_pmic_dcdc_get_voltage,
	532	.set_voltage = tps6507x_pmic_dcdc_set_voltage,
	533	.list_voltage = tps6507x_pmic_dcdc_list_voltage,
3fa5b8e0 AA	534	};
	535
	536	/* Operations permitted on LDOx */
4ce5ba5b TF	537	static struct regulator_ops tps6507x_pmic_ldo_ops = {
	538	.is_enabled = tps6507x_pmic_ldo_is_enabled,
	539	.enable = tps6507x_pmic_ldo_enable,
	540	.disable = tps6507x_pmic_ldo_disable,
	541	.get_voltage = tps6507x_pmic_ldo_get_voltage,
	542	.set_voltage = tps6507x_pmic_ldo_set_voltage,
	543	.list_voltage = tps6507x_pmic_ldo_list_voltage,
3fa5b8e0 AA	544	};
3fa5b8e0 AA	545
31dd6a26 TF	546	static __devinit
31dd6a26 TF	547	int tps6507x_pmic_probe(struct platform_device *pdev)
3fa5b8e0	548	{
31dd6a26	549	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
3fa5b8e0	550	static int desc_id;
7d14831e	551	struct tps_info *info = &tps6507x_pmic_regs[0];
3fa5b8e0 AA	552	struct regulator_init_data *init_data;
3fa5b8e0 AA	553	struct regulator_dev *rdev;
4ce5ba5b	554	struct tps6507x_pmic *tps;
0bc20bba	555	struct tps6507x_board *tps_board;
3fa5b8e0	556	int i;
56c23492	557	int error;
3fa5b8e0	558
0bc20bba TF	559	/**
	560	* tps_board points to pmic related constants
	561	* coming from the board-evm file.
	562	*/
	563
31dd6a26	564	tps_board = dev_get_platdata(tps6507x_dev->dev);
0bc20bba TF	565	if (!tps_board)
	566	return -EINVAL;
	567
3fa5b8e0 AA	568	/**
	569	* init_data points to array of regulator_init structures
	570	* coming from the board-evm file.
	571	*/
0bc20bba	572	init_data = tps_board->tps6507x_pmic_init_data;
3fa5b8e0	573	if (!init_data)
0bc20bba	574	return -EINVAL;
3fa5b8e0 AA	575
	576	tps = kzalloc(sizeof(*tps), GFP_KERNEL);
	577	if (!tps)
	578	return -ENOMEM;
	579
	580	mutex_init(&tps->io_lock);
	581
	582	/* common for all regulators */
31dd6a26	583	tps->mfd = tps6507x_dev;
3fa5b8e0 AA	584
	585	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
	586	/* Register the regulators */
	587	tps->info[i] = info;
7d14831e AA	588	if (init_data->driver_data) {
	589	struct tps6507x_reg_platform_data *data =
	590	init_data->driver_data;
	591	tps->info[i]->defdcdc_default = data->defdcdc_default;
	592	}
	593
3fa5b8e0 AA	594	tps->desc[i].name = info->name;
	595	tps->desc[i].id = desc_id++;
	596	tps->desc[i].n_voltages = num_voltages[i];
	597	tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
4ce5ba5b	598	&tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
3fa5b8e0 AA	599	tps->desc[i].type = REGULATOR_VOLTAGE;
	600	tps->desc[i].owner = THIS_MODULE;
	601
	602	rdev = regulator_register(&tps->desc[i],
31dd6a26	603	tps6507x_dev->dev, init_data, tps);
3fa5b8e0	604	if (IS_ERR(rdev)) {
31dd6a26 TF	605	dev_err(tps6507x_dev->dev,
	606	"failed to register %s regulator\n",
	607	pdev->name);
56c23492 DT	608	error = PTR_ERR(rdev);
56c23492 DT	609	goto fail;
3fa5b8e0 AA	610	}
	611
	612	/* Save regulator for cleanup */
	613	tps->rdev[i] = rdev;
	614	}
	615
31dd6a26	616	tps6507x_dev->pmic = tps;
3fa5b8e0 AA	617
3fa5b8e0 AA	618	return 0;
56c23492 DT	619
	620	fail:
	621	while (--i >= 0)
	622	regulator_unregister(tps->rdev[i]);
	623
	624	kfree(tps);
	625	return error;
3fa5b8e0 AA	626	}
	627
	628	/**
4ce5ba5b	629	* tps6507x_remove - TPS6507x driver i2c remove handler
3fa5b8e0 AA	630	* @client: i2c driver client device structure
	631	*
	632	* Unregister TPS driver as an i2c client device driver
	633	*/
31dd6a26	634	static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
3fa5b8e0	635	{
31dd6a26 TF	636	struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
31dd6a26 TF	637	struct tps6507x_pmic *tps = tps6507x_dev->pmic;
3fa5b8e0 AA	638	int i;
	639
	640	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
	641	regulator_unregister(tps->rdev[i]);
	642
3fa5b8e0 AA	643	kfree(tps);
	644
	645	return 0;
	646	}
	647
31dd6a26	648	static struct platform_driver tps6507x_pmic_driver = {
3fa5b8e0	649	.driver = {
31dd6a26	650	.name = "tps6507x-pmic",
3fa5b8e0 AA	651	.owner = THIS_MODULE,
3fa5b8e0 AA	652	},
4ce5ba5b TF	653	.probe = tps6507x_pmic_probe,
4ce5ba5b TF	654	.remove = __devexit_p(tps6507x_pmic_remove),
3fa5b8e0 AA	655	};
	656
	657	/**
4ce5ba5b	658	* tps6507x_pmic_init
3fa5b8e0 AA	659	*
	660	* Module init function
	661	*/
4ce5ba5b	662	static int __init tps6507x_pmic_init(void)
3fa5b8e0	663	{
31dd6a26	664	return platform_driver_register(&tps6507x_pmic_driver);
3fa5b8e0	665	}
4ce5ba5b	666	subsys_initcall(tps6507x_pmic_init);
3fa5b8e0 AA	667
3fa5b8e0 AA	668	/**
4ce5ba5b	669	* tps6507x_pmic_cleanup
3fa5b8e0 AA	670	*
	671	* Module exit function
	672	*/
4ce5ba5b	673	static void __exit tps6507x_pmic_cleanup(void)
3fa5b8e0	674	{
31dd6a26	675	platform_driver_unregister(&tps6507x_pmic_driver);
3fa5b8e0	676	}
4ce5ba5b	677	module_exit(tps6507x_pmic_cleanup);
3fa5b8e0 AA	678
	679	MODULE_AUTHOR("Texas Instruments");
	680	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
9e108d33	681	MODULE_LICENSE("GPL v2");
31dd6a26	682	MODULE_ALIAS("platform:tps6507x-pmic");