[mirror_ubuntu-bionic-kernel.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,
};

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_is_enabled(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, rid = rdev_get_id(dev);
	u8 shift;

	if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
		return -EINVAL;

	shift = TPS6507X_MAX_REG_ID - rid;
	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_enable(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);
	u8 shift;

	if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
		return -EINVAL;

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

static int tps6507x_pmic_disable(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);
	u8 shift;

	if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
		return -EINVAL;

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

static int tps6507x_pmic_get_voltage(struct regulator_dev *dev)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, rid = rdev_get_id(dev);
	u8 reg, mask;

	switch (rid) {
	case TPS6507X_DCDC_1:
		reg = TPS6507X_REG_DEFDCDC1;
		mask = TPS6507X_DEFDCDCX_DCDC_MASK;
		break;
	case TPS6507X_DCDC_2:
		if (tps->info[rid]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC2_HIGH;
		else
			reg = TPS6507X_REG_DEFDCDC2_LOW;
		mask = TPS6507X_DEFDCDCX_DCDC_MASK;
		break;
	case TPS6507X_DCDC_3:
		if (tps->info[rid]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC3_HIGH;
		else
			reg = TPS6507X_REG_DEFDCDC3_LOW;
		mask = TPS6507X_DEFDCDCX_DCDC_MASK;
		break;
	case TPS6507X_LDO_1:
		reg = TPS6507X_REG_LDO_CTRL1;
		mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
		break;
	case TPS6507X_LDO_2:
		reg = TPS6507X_REG_DEFLDO2;
		mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
		break;
	default:
		return -EINVAL;
	}

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

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

static int tps6507x_pmic_set_voltage_sel(struct regulator_dev *dev,
					  unsigned selector)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int data, rid = rdev_get_id(dev);
	u8 reg, mask;

	switch (rid) {
	case TPS6507X_DCDC_1:
		reg = TPS6507X_REG_DEFDCDC1;
		mask = TPS6507X_DEFDCDCX_DCDC_MASK;
		break;
	case TPS6507X_DCDC_2:
		if (tps->info[rid]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC2_HIGH;
		else
			reg = TPS6507X_REG_DEFDCDC2_LOW;
		mask = TPS6507X_DEFDCDCX_DCDC_MASK;
		break;
	case TPS6507X_DCDC_3:
		if (tps->info[rid]->defdcdc_default)
			reg = TPS6507X_REG_DEFDCDC3_HIGH;
		else
			reg = TPS6507X_REG_DEFDCDC3_LOW;
		mask = TPS6507X_DEFDCDCX_DCDC_MASK;
		break;
	case TPS6507X_LDO_1:
		reg = TPS6507X_REG_LDO_CTRL1;
		mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
		break;
	case TPS6507X_LDO_2:
		reg = TPS6507X_REG_DEFLDO2;
		mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
		break;
	default:
		return -EINVAL;
	}

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

	data &= ~mask;
	data |= selector;

	return tps6507x_pmic_reg_write(tps, reg, data);
}

static int tps6507x_pmic_list_voltage(struct regulator_dev *dev,
					unsigned selector)
{
	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);

	if (rid < TPS6507X_DCDC_1 || rid > TPS6507X_LDO_2)
		return -EINVAL;

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

static struct regulator_ops tps6507x_pmic_ops = {
	.is_enabled = tps6507x_pmic_is_enabled,
	.enable = tps6507x_pmic_enable,
	.disable = tps6507x_pmic_disable,
	.get_voltage = tps6507x_pmic_get_voltage,
	.set_voltage_sel = tps6507x_pmic_set_voltage_sel,
	.list_voltage = tps6507x_pmic_list_voltage,
};

static __devinit int tps6507x_pmic_probe(struct platform_device *pdev)
{
	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
	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 = i;
		tps->desc[i].n_voltages = info->table_len;
		tps->desc[i].ops = &tps6507x_pmic_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, NULL);
		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),
};

static int __init tps6507x_pmic_init(void)
{
	return platform_driver_register(&tps6507x_pmic_driver);
}
subsys_initcall(tps6507x_pmic_init);

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
3fa5b8e0 AA	93	struct tps_info {
	94	const char *name;
	95	unsigned min_uV;
	96	unsigned max_uV;
	97	u8 table_len;
	98	const u16 *table;
7d14831e AA	99
	100	/* Does DCDC high or the low register defines output voltage? */
	101	bool defdcdc_default;
3fa5b8e0 AA	102	};
3fa5b8e0 AA	103
7d14831e	104	static struct tps_info tps6507x_pmic_regs[] = {
31dd6a26 TF	105	{
	106	.name = "VDCDC1",
	107	.min_uV = 725000,
	108	.max_uV = 3300000,
	109	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	110	.table = VDCDCx_VSEL_table,
	111	},
	112	{
	113	.name = "VDCDC2",
	114	.min_uV = 725000,
	115	.max_uV = 3300000,
	116	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	117	.table = VDCDCx_VSEL_table,
	118	},
	119	{
	120	.name = "VDCDC3",
	121	.min_uV = 725000,
	122	.max_uV = 3300000,
	123	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	124	.table = VDCDCx_VSEL_table,
	125	},
	126	{
	127	.name = "LDO1",
	128	.min_uV = 1000000,
	129	.max_uV = 3300000,
	130	.table_len = ARRAY_SIZE(LDO1_VSEL_table),
	131	.table = LDO1_VSEL_table,
	132	},
	133	{
	134	.name = "LDO2",
	135	.min_uV = 725000,
	136	.max_uV = 3300000,
	137	.table_len = ARRAY_SIZE(LDO2_VSEL_table),
	138	.table = LDO2_VSEL_table,
	139	},
	140	};
	141
4ce5ba5b	142	struct tps6507x_pmic {
3fa5b8e0	143	struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
31dd6a26	144	struct tps6507x_dev *mfd;
3fa5b8e0	145	struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
7d14831e	146	struct tps_info *info[TPS6507X_NUM_REGULATOR];
3fa5b8e0 AA	147	struct mutex io_lock;
3fa5b8e0 AA	148	};
4ce5ba5b	149	static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0	150	{
31dd6a26 TF	151	u8 val;
	152	int err;
	153
	154	err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
	155
	156	if (err)
	157	return err;
	158
	159	return val;
3fa5b8e0 AA	160	}
3fa5b8e0 AA	161
4ce5ba5b	162	static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0	163	{
31dd6a26	164	return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
3fa5b8e0 AA	165	}
3fa5b8e0 AA	166
4ce5ba5b	167	static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	168	{
	169	int err, data;
	170
	171	mutex_lock(&tps->io_lock);
	172
4ce5ba5b	173	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	174	if (data < 0) {
31dd6a26	175	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	176	err = data;
	177	goto out;
	178	}
	179
	180	data \|= mask;
4ce5ba5b	181	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	182	if (err)
31dd6a26	183	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	184
	185	out:
	186	mutex_unlock(&tps->io_lock);
	187	return err;
	188	}
	189
4ce5ba5b	190	static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	191	{
	192	int err, data;
	193
	194	mutex_lock(&tps->io_lock);
	195
4ce5ba5b	196	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	197	if (data < 0) {
31dd6a26	198	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	199	err = data;
	200	goto out;
	201	}
	202
	203	data &= ~mask;
4ce5ba5b	204	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	205	if (err)
31dd6a26	206	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	207
	208	out:
	209	mutex_unlock(&tps->io_lock);
	210	return err;
	211	}
	212
4ce5ba5b	213	static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0 AA	214	{
	215	int data;
	216
	217	mutex_lock(&tps->io_lock);
	218
4ce5ba5b	219	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	220	if (data < 0)
31dd6a26	221	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	222
	223	mutex_unlock(&tps->io_lock);
	224	return data;
	225	}
	226
4ce5ba5b	227	static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0 AA	228	{
	229	int err;
	230
	231	mutex_lock(&tps->io_lock);
	232
4ce5ba5b	233	err = tps6507x_pmic_write(tps, reg, val);
3fa5b8e0	234	if (err < 0)
31dd6a26	235	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	236
	237	mutex_unlock(&tps->io_lock);
	238	return err;
	239	}
	240
f2933d33	241	static int tps6507x_pmic_is_enabled(struct regulator_dev *dev)
3fa5b8e0	242	{
4ce5ba5b	243	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	244	int data, rid = rdev_get_id(dev);
3fa5b8e0 AA	245	u8 shift;
3fa5b8e0 AA	246
f2933d33	247	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	248	return -EINVAL;
3fa5b8e0 AA	249
f2933d33	250	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b	251	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	252
	253	if (data < 0)
	254	return data;
	255	else
	256	return (data & 1<<shift) ? 1 : 0;
	257	}
	258
f2933d33	259	static int tps6507x_pmic_enable(struct regulator_dev *dev)
3fa5b8e0	260	{
4ce5ba5b	261	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	262	int rid = rdev_get_id(dev);
3fa5b8e0 AA	263	u8 shift;
3fa5b8e0 AA	264
f2933d33	265	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	266	return -EINVAL;
3fa5b8e0 AA	267
f2933d33	268	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b	269	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	270	}
3fa5b8e0 AA	271
f2933d33	272	static int tps6507x_pmic_disable(struct regulator_dev *dev)
3fa5b8e0	273	{
4ce5ba5b	274	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	275	int rid = rdev_get_id(dev);
3fa5b8e0 AA	276	u8 shift;
3fa5b8e0 AA	277
f2933d33	278	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	279	return -EINVAL;
3fa5b8e0 AA	280
f2933d33	281	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b TF	282	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	283	1 << shift);
3fa5b8e0 AA	284	}
3fa5b8e0 AA	285
f2933d33	286	static int tps6507x_pmic_get_voltage(struct regulator_dev *dev)
3fa5b8e0	287	{
4ce5ba5b	288	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33 AL	289	int data, rid = rdev_get_id(dev);
f2933d33 AL	290	u8 reg, mask;
3fa5b8e0	291
f2933d33	292	switch (rid) {
3fa5b8e0 AA	293	case TPS6507X_DCDC_1:
3fa5b8e0 AA	294	reg = TPS6507X_REG_DEFDCDC1;
f2933d33	295	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	296	break;
3fa5b8e0 AA	297	case TPS6507X_DCDC_2:
f2933d33	298	if (tps->info[rid]->defdcdc_default)
7d14831e AA	299	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	300	else
	301	reg = TPS6507X_REG_DEFDCDC2_LOW;
f2933d33	302	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	303	break;
3fa5b8e0 AA	304	case TPS6507X_DCDC_3:
f2933d33	305	if (tps->info[rid]->defdcdc_default)
7d14831e AA	306	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	307	else
	308	reg = TPS6507X_REG_DEFDCDC3_LOW;
f2933d33 AL	309	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
	310	break;
	311	case TPS6507X_LDO_1:
	312	reg = TPS6507X_REG_LDO_CTRL1;
	313	mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
	314	break;
	315	case TPS6507X_LDO_2:
	316	reg = TPS6507X_REG_DEFLDO2;
	317	mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
3fa5b8e0 AA	318	break;
	319	default:
	320	return -EINVAL;
	321	}
	322
4ce5ba5b	323	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	324	if (data < 0)
	325	return data;
	326
f2933d33 AL	327	data &= mask;
f2933d33 AL	328	return tps->info[rid]->table[data] * 1000;
3fa5b8e0 AA	329	}
3fa5b8e0 AA	330
ca61a7bf AL	331	static int tps6507x_pmic_set_voltage_sel(struct regulator_dev *dev,
ca61a7bf AL	332	unsigned selector)
3fa5b8e0	333	{
4ce5ba5b	334	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
ca61a7bf	335	int data, rid = rdev_get_id(dev);
f2933d33	336	u8 reg, mask;
3fa5b8e0	337
f2933d33	338	switch (rid) {
3fa5b8e0 AA	339	case TPS6507X_DCDC_1:
3fa5b8e0 AA	340	reg = TPS6507X_REG_DEFDCDC1;
f2933d33	341	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	342	break;
3fa5b8e0 AA	343	case TPS6507X_DCDC_2:
f2933d33	344	if (tps->info[rid]->defdcdc_default)
7d14831e AA	345	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	346	else
	347	reg = TPS6507X_REG_DEFDCDC2_LOW;
f2933d33	348	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	349	break;
3fa5b8e0 AA	350	case TPS6507X_DCDC_3:
f2933d33	351	if (tps->info[rid]->defdcdc_default)
7d14831e AA	352	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	353	else
	354	reg = TPS6507X_REG_DEFDCDC3_LOW;
f2933d33 AL	355	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
	356	break;
	357	case TPS6507X_LDO_1:
	358	reg = TPS6507X_REG_LDO_CTRL1;
	359	mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
	360	break;
	361	case TPS6507X_LDO_2:
	362	reg = TPS6507X_REG_DEFLDO2;
	363	mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
3fa5b8e0 AA	364	break;
	365	default:
	366	return -EINVAL;
	367	}
	368
4ce5ba5b	369	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	370	if (data < 0)
	371	return data;
	372
	373	data &= ~mask;
ca61a7bf	374	data \|= selector;
3fa5b8e0	375
4ce5ba5b	376	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	377	}
3fa5b8e0 AA	378
f2933d33	379	static int tps6507x_pmic_list_voltage(struct regulator_dev *dev,
3fa5b8e0 AA	380	unsigned selector)
3fa5b8e0 AA	381	{
4ce5ba5b	382	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	383	int rid = rdev_get_id(dev);
3fa5b8e0	384
f2933d33	385	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	386	return -EINVAL;
3fa5b8e0 AA	387
f2933d33	388	if (selector >= tps->info[rid]->table_len)
3fa5b8e0 AA	389	return -EINVAL;
3fa5b8e0 AA	390	else
f2933d33	391	return tps->info[rid]->table[selector] * 1000;
3fa5b8e0 AA	392	}
3fa5b8e0 AA	393
f2933d33 AL	394	static struct regulator_ops tps6507x_pmic_ops = {
	395	.is_enabled = tps6507x_pmic_is_enabled,
	396	.enable = tps6507x_pmic_enable,
	397	.disable = tps6507x_pmic_disable,
	398	.get_voltage = tps6507x_pmic_get_voltage,
ca61a7bf	399	.set_voltage_sel = tps6507x_pmic_set_voltage_sel,
f2933d33	400	.list_voltage = tps6507x_pmic_list_voltage,
3fa5b8e0 AA	401	};
3fa5b8e0 AA	402
f2933d33	403	static __devinit int tps6507x_pmic_probe(struct platform_device *pdev)
3fa5b8e0	404	{
31dd6a26	405	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
7d14831e	406	struct tps_info *info = &tps6507x_pmic_regs[0];
3fa5b8e0 AA	407	struct regulator_init_data *init_data;
3fa5b8e0 AA	408	struct regulator_dev *rdev;
4ce5ba5b	409	struct tps6507x_pmic *tps;
0bc20bba	410	struct tps6507x_board *tps_board;
3fa5b8e0	411	int i;
56c23492	412	int error;
3fa5b8e0	413
0bc20bba TF	414	/**
	415	* tps_board points to pmic related constants
	416	* coming from the board-evm file.
	417	*/
	418
31dd6a26	419	tps_board = dev_get_platdata(tps6507x_dev->dev);
0bc20bba TF	420	if (!tps_board)
	421	return -EINVAL;
	422
3fa5b8e0 AA	423	/**
	424	* init_data points to array of regulator_init structures
	425	* coming from the board-evm file.
	426	*/
0bc20bba	427	init_data = tps_board->tps6507x_pmic_init_data;
3fa5b8e0	428	if (!init_data)
0bc20bba	429	return -EINVAL;
3fa5b8e0 AA	430
	431	tps = kzalloc(sizeof(*tps), GFP_KERNEL);
	432	if (!tps)
	433	return -ENOMEM;
	434
	435	mutex_init(&tps->io_lock);
	436
	437	/* common for all regulators */
31dd6a26	438	tps->mfd = tps6507x_dev;
3fa5b8e0 AA	439
	440	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
	441	/* Register the regulators */
	442	tps->info[i] = info;
7d14831e AA	443	if (init_data->driver_data) {
	444	struct tps6507x_reg_platform_data *data =
	445	init_data->driver_data;
	446	tps->info[i]->defdcdc_default = data->defdcdc_default;
	447	}
	448
3fa5b8e0	449	tps->desc[i].name = info->name;
77fa44d0	450	tps->desc[i].id = i;
0fcdb109	451	tps->desc[i].n_voltages = info->table_len;
f2933d33	452	tps->desc[i].ops = &tps6507x_pmic_ops;
3fa5b8e0 AA	453	tps->desc[i].type = REGULATOR_VOLTAGE;
	454	tps->desc[i].owner = THIS_MODULE;
	455
	456	rdev = regulator_register(&tps->desc[i],
2c043bcb	457	tps6507x_dev->dev, init_data, tps, NULL);
3fa5b8e0	458	if (IS_ERR(rdev)) {
31dd6a26 TF	459	dev_err(tps6507x_dev->dev,
	460	"failed to register %s regulator\n",
	461	pdev->name);
56c23492 DT	462	error = PTR_ERR(rdev);
56c23492 DT	463	goto fail;
3fa5b8e0 AA	464	}
	465
	466	/* Save regulator for cleanup */
	467	tps->rdev[i] = rdev;
	468	}
	469
31dd6a26	470	tps6507x_dev->pmic = tps;
d7399fa8	471	platform_set_drvdata(pdev, tps6507x_dev);
3fa5b8e0 AA	472
3fa5b8e0 AA	473	return 0;
56c23492 DT	474
	475	fail:
	476	while (--i >= 0)
	477	regulator_unregister(tps->rdev[i]);
	478
	479	kfree(tps);
	480	return error;
3fa5b8e0 AA	481	}
3fa5b8e0 AA	482
31dd6a26	483	static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
3fa5b8e0	484	{
31dd6a26 TF	485	struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
31dd6a26 TF	486	struct tps6507x_pmic *tps = tps6507x_dev->pmic;
3fa5b8e0 AA	487	int i;
	488
	489	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
	490	regulator_unregister(tps->rdev[i]);
	491
3fa5b8e0 AA	492	kfree(tps);
	493
	494	return 0;
	495	}
	496
31dd6a26	497	static struct platform_driver tps6507x_pmic_driver = {
3fa5b8e0	498	.driver = {
31dd6a26	499	.name = "tps6507x-pmic",
3fa5b8e0 AA	500	.owner = THIS_MODULE,
3fa5b8e0 AA	501	},
4ce5ba5b TF	502	.probe = tps6507x_pmic_probe,
4ce5ba5b TF	503	.remove = __devexit_p(tps6507x_pmic_remove),
3fa5b8e0 AA	504	};
3fa5b8e0 AA	505
4ce5ba5b	506	static int __init tps6507x_pmic_init(void)
3fa5b8e0	507	{
31dd6a26	508	return platform_driver_register(&tps6507x_pmic_driver);
3fa5b8e0	509	}
4ce5ba5b	510	subsys_initcall(tps6507x_pmic_init);
3fa5b8e0	511
4ce5ba5b	512	static void __exit tps6507x_pmic_cleanup(void)
3fa5b8e0	513	{
31dd6a26	514	platform_driver_unregister(&tps6507x_pmic_driver);
3fa5b8e0	515	}
4ce5ba5b	516	module_exit(tps6507x_pmic_cleanup);
3fa5b8e0 AA	517
	518	MODULE_AUTHOR("Texas Instruments");
	519	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
9e108d33	520	MODULE_LICENSE("GPL v2");
31dd6a26	521	MODULE_ALIAS("platform:tps6507x-pmic");