[deliverable/linux.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,
					  unsigned *selector)
{
	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;

	*selector = vsel;

	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,
					 unsigned *selector)
{
	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;

	*selector = vsel;

	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;
	platform_set_drvdata(pdev, tps6507x_dev);

	return 0;

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

	kfree(tps);
	return error;
}

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,
3a93f2a9 MB	372	int min_uV, int max_uV,
3a93f2a9 MB	373	unsigned *selector)
3fa5b8e0	374	{
4ce5ba5b	375	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	376	int data, vsel, dcdc = rdev_get_id(dev);
	377	u8 reg;
	378
	379	switch (dcdc) {
	380	case TPS6507X_DCDC_1:
	381	reg = TPS6507X_REG_DEFDCDC1;
	382	break;
	383	case TPS6507X_DCDC_2:
7d14831e AA	384	if (tps->info[dcdc]->defdcdc_default)
	385	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	386	else
	387	reg = TPS6507X_REG_DEFDCDC2_LOW;
3fa5b8e0 AA	388	break;
3fa5b8e0 AA	389	case TPS6507X_DCDC_3:
7d14831e AA	390	if (tps->info[dcdc]->defdcdc_default)
	391	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	392	else
	393	reg = TPS6507X_REG_DEFDCDC3_LOW;
3fa5b8e0 AA	394	break;
	395	default:
	396	return -EINVAL;
	397	}
	398
	399	if (min_uV < tps->info[dcdc]->min_uV
	400	\|\| min_uV > tps->info[dcdc]->max_uV)
	401	return -EINVAL;
	402	if (max_uV < tps->info[dcdc]->min_uV
	403	\|\| max_uV > tps->info[dcdc]->max_uV)
	404	return -EINVAL;
	405
	406	for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
	407	int mV = tps->info[dcdc]->table[vsel];
	408	int uV = mV * 1000;
	409
	410	/* Break at the first in-range value */
	411	if (min_uV <= uV && uV <= max_uV)
	412	break;
	413	}
	414
	415	/* write to the register in case we found a match */
	416	if (vsel == tps->info[dcdc]->table_len)
	417	return -EINVAL;
	418
3a93f2a9 MB	419	*selector = vsel;
3a93f2a9 MB	420
4ce5ba5b	421	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	422	if (data < 0)
	423	return data;
	424
	425	data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
	426	data \|= vsel;
	427
4ce5ba5b	428	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	429	}
3fa5b8e0 AA	430
4ce5ba5b	431	static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
3fa5b8e0	432	{
4ce5ba5b	433	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	434	int data, ldo = rdev_get_id(dev);
	435	u8 reg, mask;
	436
	437	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	438	return -EINVAL;
	439	else {
	440	reg = (ldo == TPS6507X_LDO_1 ?
	441	TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
	442	mask = (ldo == TPS6507X_LDO_1 ?
	443	TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
	444	TPS6507X_REG_DEFLDO2_LDO2_MASK);
	445	}
	446
4ce5ba5b	447	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	448	if (data < 0)
	449	return data;
	450
	451	data &= mask;
	452	return tps->info[ldo]->table[data] * 1000;
	453	}
	454
4ce5ba5b	455	static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
3a93f2a9 MB	456	int min_uV, int max_uV,
3a93f2a9 MB	457	unsigned *selector)
3fa5b8e0	458	{
4ce5ba5b	459	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	460	int data, vsel, ldo = rdev_get_id(dev);
	461	u8 reg, mask;
	462
	463	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	464	return -EINVAL;
	465	else {
	466	reg = (ldo == TPS6507X_LDO_1 ?
	467	TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
	468	mask = (ldo == TPS6507X_LDO_1 ?
	469	TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
	470	TPS6507X_REG_DEFLDO2_LDO2_MASK);
	471	}
	472
	473	if (min_uV < tps->info[ldo]->min_uV \|\| min_uV > tps->info[ldo]->max_uV)
	474	return -EINVAL;
	475	if (max_uV < tps->info[ldo]->min_uV \|\| max_uV > tps->info[ldo]->max_uV)
	476	return -EINVAL;
	477
	478	for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
	479	int mV = tps->info[ldo]->table[vsel];
	480	int uV = mV * 1000;
	481
	482	/* Break at the first in-range value */
	483	if (min_uV <= uV && uV <= max_uV)
	484	break;
	485	}
	486
	487	if (vsel == tps->info[ldo]->table_len)
	488	return -EINVAL;
	489
3a93f2a9 MB	490	*selector = vsel;
3a93f2a9 MB	491
4ce5ba5b	492	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	493	if (data < 0)
	494	return data;
	495
	496	data &= ~mask;
	497	data \|= vsel;
	498
4ce5ba5b	499	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	500	}
3fa5b8e0 AA	501
4ce5ba5b	502	static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	503	unsigned selector)
3fa5b8e0 AA	504	{
4ce5ba5b	505	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	506	int dcdc = rdev_get_id(dev);
	507
	508	if (dcdc < TPS6507X_DCDC_1 \|\| dcdc > TPS6507X_DCDC_3)
	509	return -EINVAL;
	510
	511	if (selector >= tps->info[dcdc]->table_len)
	512	return -EINVAL;
	513	else
	514	return tps->info[dcdc]->table[selector] * 1000;
	515	}
	516
4ce5ba5b	517	static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	518	unsigned selector)
3fa5b8e0 AA	519	{
4ce5ba5b	520	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
3fa5b8e0 AA	521	int ldo = rdev_get_id(dev);
	522
	523	if (ldo < TPS6507X_LDO_1 \|\| ldo > TPS6507X_LDO_2)
	524	return -EINVAL;
	525
	526	if (selector >= tps->info[ldo]->table_len)
	527	return -EINVAL;
	528	else
	529	return tps->info[ldo]->table[selector] * 1000;
	530	}
	531
	532	/* Operations permitted on VDCDCx */
4ce5ba5b TF	533	static struct regulator_ops tps6507x_pmic_dcdc_ops = {
	534	.is_enabled = tps6507x_pmic_dcdc_is_enabled,
	535	.enable = tps6507x_pmic_dcdc_enable,
	536	.disable = tps6507x_pmic_dcdc_disable,
	537	.get_voltage = tps6507x_pmic_dcdc_get_voltage,
	538	.set_voltage = tps6507x_pmic_dcdc_set_voltage,
	539	.list_voltage = tps6507x_pmic_dcdc_list_voltage,
3fa5b8e0 AA	540	};
	541
	542	/* Operations permitted on LDOx */
4ce5ba5b TF	543	static struct regulator_ops tps6507x_pmic_ldo_ops = {
	544	.is_enabled = tps6507x_pmic_ldo_is_enabled,
	545	.enable = tps6507x_pmic_ldo_enable,
	546	.disable = tps6507x_pmic_ldo_disable,
	547	.get_voltage = tps6507x_pmic_ldo_get_voltage,
	548	.set_voltage = tps6507x_pmic_ldo_set_voltage,
	549	.list_voltage = tps6507x_pmic_ldo_list_voltage,
3fa5b8e0 AA	550	};
3fa5b8e0 AA	551
31dd6a26 TF	552	static __devinit
31dd6a26 TF	553	int tps6507x_pmic_probe(struct platform_device *pdev)
3fa5b8e0	554	{
31dd6a26	555	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
3fa5b8e0	556	static int desc_id;
7d14831e	557	struct tps_info *info = &tps6507x_pmic_regs[0];
3fa5b8e0 AA	558	struct regulator_init_data *init_data;
3fa5b8e0 AA	559	struct regulator_dev *rdev;
4ce5ba5b	560	struct tps6507x_pmic *tps;
0bc20bba	561	struct tps6507x_board *tps_board;
3fa5b8e0	562	int i;
56c23492	563	int error;
3fa5b8e0	564
0bc20bba TF	565	/**
	566	* tps_board points to pmic related constants
	567	* coming from the board-evm file.
	568	*/
	569
31dd6a26	570	tps_board = dev_get_platdata(tps6507x_dev->dev);
0bc20bba TF	571	if (!tps_board)
	572	return -EINVAL;
	573
3fa5b8e0 AA	574	/**
	575	* init_data points to array of regulator_init structures
	576	* coming from the board-evm file.
	577	*/
0bc20bba	578	init_data = tps_board->tps6507x_pmic_init_data;
3fa5b8e0	579	if (!init_data)
0bc20bba	580	return -EINVAL;
3fa5b8e0 AA	581
	582	tps = kzalloc(sizeof(*tps), GFP_KERNEL);
	583	if (!tps)
	584	return -ENOMEM;
	585
	586	mutex_init(&tps->io_lock);
	587
	588	/* common for all regulators */
31dd6a26	589	tps->mfd = tps6507x_dev;
3fa5b8e0 AA	590
	591	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
	592	/* Register the regulators */
	593	tps->info[i] = info;
7d14831e AA	594	if (init_data->driver_data) {
	595	struct tps6507x_reg_platform_data *data =
	596	init_data->driver_data;
	597	tps->info[i]->defdcdc_default = data->defdcdc_default;
	598	}
	599
3fa5b8e0 AA	600	tps->desc[i].name = info->name;
	601	tps->desc[i].id = desc_id++;
	602	tps->desc[i].n_voltages = num_voltages[i];
	603	tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
4ce5ba5b	604	&tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
3fa5b8e0 AA	605	tps->desc[i].type = REGULATOR_VOLTAGE;
	606	tps->desc[i].owner = THIS_MODULE;
	607
	608	rdev = regulator_register(&tps->desc[i],
31dd6a26	609	tps6507x_dev->dev, init_data, tps);
3fa5b8e0	610	if (IS_ERR(rdev)) {
31dd6a26 TF	611	dev_err(tps6507x_dev->dev,
	612	"failed to register %s regulator\n",
	613	pdev->name);
56c23492 DT	614	error = PTR_ERR(rdev);
56c23492 DT	615	goto fail;
3fa5b8e0 AA	616	}
	617
	618	/* Save regulator for cleanup */
	619	tps->rdev[i] = rdev;
	620	}
	621
31dd6a26	622	tps6507x_dev->pmic = tps;
d7399fa8	623	platform_set_drvdata(pdev, tps6507x_dev);
3fa5b8e0 AA	624
3fa5b8e0 AA	625	return 0;
56c23492 DT	626
	627	fail:
	628	while (--i >= 0)
	629	regulator_unregister(tps->rdev[i]);
	630
	631	kfree(tps);
	632	return error;
3fa5b8e0 AA	633	}
3fa5b8e0 AA	634
31dd6a26	635	static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
3fa5b8e0	636	{
31dd6a26 TF	637	struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
31dd6a26 TF	638	struct tps6507x_pmic *tps = tps6507x_dev->pmic;
3fa5b8e0 AA	639	int i;
	640
	641	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
	642	regulator_unregister(tps->rdev[i]);
	643
3fa5b8e0 AA	644	kfree(tps);
	645
	646	return 0;
	647	}
	648
31dd6a26	649	static struct platform_driver tps6507x_pmic_driver = {
3fa5b8e0	650	.driver = {
31dd6a26	651	.name = "tps6507x-pmic",
3fa5b8e0 AA	652	.owner = THIS_MODULE,
3fa5b8e0 AA	653	},
4ce5ba5b TF	654	.probe = tps6507x_pmic_probe,
4ce5ba5b TF	655	.remove = __devexit_p(tps6507x_pmic_remove),
3fa5b8e0 AA	656	};
	657
	658	/**
4ce5ba5b	659	* tps6507x_pmic_init
3fa5b8e0 AA	660	*
	661	* Module init function
	662	*/
4ce5ba5b	663	static int __init tps6507x_pmic_init(void)
3fa5b8e0	664	{
31dd6a26	665	return platform_driver_register(&tps6507x_pmic_driver);
3fa5b8e0	666	}
4ce5ba5b	667	subsys_initcall(tps6507x_pmic_init);
3fa5b8e0 AA	668
3fa5b8e0 AA	669	/**
4ce5ba5b	670	* tps6507x_pmic_cleanup
3fa5b8e0 AA	671	*
	672	* Module exit function
	673	*/
4ce5ba5b	674	static void __exit tps6507x_pmic_cleanup(void)
3fa5b8e0	675	{
31dd6a26	676	platform_driver_unregister(&tps6507x_pmic_driver);
3fa5b8e0	677	}
4ce5ba5b	678	module_exit(tps6507x_pmic_cleanup);
3fa5b8e0 AA	679
	680	MODULE_AUTHOR("Texas Instruments");
	681	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
9e108d33	682	MODULE_LICENSE("GPL v2");
31dd6a26	683	MODULE_ALIAS("platform:tps6507x-pmic");