[linux-2.6-block.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/of.h>
#include <linux/slab.h>
#include <linux/mfd/tps6507x.h>
#include <linux/regulator/of_regulator.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 microVolts) */
static const unsigned int VDCDCx_VSEL_table[] = {
	725000, 750000, 775000, 800000,
	825000, 850000, 875000, 900000,
	925000, 950000, 975000, 1000000,
	1025000, 1050000, 1075000, 1100000,
	1125000, 1150000, 1175000, 1200000,
	1225000, 1250000, 1275000, 1300000,
	1325000, 1350000, 1375000, 1400000,
	1425000, 1450000, 1475000, 1500000,
	1550000, 1600000, 1650000, 1700000,
	1750000, 1800000, 1850000, 1900000,
	1950000, 2000000, 2050000, 2100000,
	2150000, 2200000, 2250000, 2300000,
	2350000, 2400000, 2450000, 2500000,
	2550000, 2600000, 2650000, 2700000,
	2750000, 2800000, 2850000, 2900000,
	3000000, 3100000, 3200000, 3300000,
};

static const unsigned int LDO1_VSEL_table[] = {
	1000000, 1100000, 1200000, 1250000,
	1300000, 1350000, 1400000, 1500000,
	1600000, 1800000, 2500000, 2750000,
	2800000, 3000000, 3100000, 3300000,
};

/* The voltage mapping table for LDO2 is the same as VDCDCx */
#define LDO2_VSEL_table VDCDCx_VSEL_table

struct tps_info {
	const char *name;
	u8 table_len;
	const unsigned int *table;

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

static struct tps_info tps6507x_pmic_regs[] = {
	{
		.name = "VDCDC1",
		.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
		.table = VDCDCx_VSEL_table,
	},
	{
		.name = "VDCDC2",
		.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
		.table = VDCDCx_VSEL_table,
	},
	{
		.name = "VDCDC3",
		.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
		.table = VDCDCx_VSEL_table,
	},
	{
		.name = "LDO1",
		.table_len = ARRAY_SIZE(LDO1_VSEL_table),
		.table = LDO1_VSEL_table,
	},
	{
		.name = "LDO2",
		.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 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_sel(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 data;
}

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 const struct regulator_ops tps6507x_pmic_ops = {
	.is_enabled = tps6507x_pmic_is_enabled,
	.enable = tps6507x_pmic_enable,
	.disable = tps6507x_pmic_disable,
	.get_voltage_sel = tps6507x_pmic_get_voltage_sel,
	.set_voltage_sel = tps6507x_pmic_set_voltage_sel,
	.list_voltage = regulator_list_voltage_table,
	.map_voltage = regulator_map_voltage_ascend,
};

static int tps6507x_pmic_of_parse_cb(struct device_node *np,
				     const struct regulator_desc *desc,
				     struct regulator_config *config)
{
	struct tps6507x_pmic *tps = config->driver_data;
	struct tps_info *info = tps->info[desc->id];
	u32 prop;
	int ret;

	ret = of_property_read_u32(np, "ti,defdcdc_default", &prop);
	if (!ret)
		info->defdcdc_default = prop;

	return 0;
}

static 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_config config = { };
	struct regulator_init_data *init_data = NULL;
	struct regulator_dev *rdev;
	struct tps6507x_pmic *tps;
	struct tps6507x_board *tps_board;
	int i;

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

	tps_board = dev_get_platdata(tps6507x_dev->dev);
	if (tps_board)
		init_data = tps_board->tps6507x_pmic_init_data;

	tps = devm_kzalloc(&pdev->dev, 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++) {
		/* Register the regulators */
		tps->info[i] = info;
		if (init_data && init_data[i].driver_data) {
			struct tps6507x_reg_platform_data *data =
					init_data[i].driver_data;
			info->defdcdc_default = data->defdcdc_default;
		}

		tps->desc[i].name = info->name;
		tps->desc[i].of_match = of_match_ptr(info->name);
		tps->desc[i].regulators_node = of_match_ptr("regulators");
		tps->desc[i].of_parse_cb = tps6507x_pmic_of_parse_cb;
		tps->desc[i].id = i;
		tps->desc[i].n_voltages = info->table_len;
		tps->desc[i].volt_table = info->table;
		tps->desc[i].ops = &tps6507x_pmic_ops;
		tps->desc[i].type = REGULATOR_VOLTAGE;
		tps->desc[i].owner = THIS_MODULE;

		config.dev = tps6507x_dev->dev;
		config.init_data = init_data;
		config.driver_data = tps;

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

	tps6507x_dev->pmic = tps;
	platform_set_drvdata(pdev, tps6507x_dev);

	return 0;
}

static struct platform_driver tps6507x_pmic_driver = {
	.driver = {
		.name = "tps6507x-pmic",
	},
	.probe = tps6507x_pmic_probe,
};

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>
6116ad94	26	#include <linux/of.h>
5a0e3ad6	27	#include <linux/slab.h>
d183fcc9	28	#include <linux/mfd/tps6507x.h>
6116ad94	29	#include <linux/regulator/of_regulator.h>
3fa5b8e0 AA	30
	31	/* DCDC's */
	32	#define TPS6507X_DCDC_1 0
	33	#define TPS6507X_DCDC_2 1
	34	#define TPS6507X_DCDC_3 2
	35	/* LDOs */
	36	#define TPS6507X_LDO_1 3
	37	#define TPS6507X_LDO_2 4
	38
	39	#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
	40
	41	/* Number of step-down converters available */
	42	#define TPS6507X_NUM_DCDC 3
	43	/* Number of LDO voltage regulators available */
	44	#define TPS6507X_NUM_LDO 2
	45	/* Number of total regulators available */
	46	#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
	47
055917ac AL	48	/* Supported voltage values for regulators (in microVolts) */
	49	static const unsigned int VDCDCx_VSEL_table[] = {
	50	725000, 750000, 775000, 800000,
	51	825000, 850000, 875000, 900000,
	52	925000, 950000, 975000, 1000000,
	53	1025000, 1050000, 1075000, 1100000,
	54	1125000, 1150000, 1175000, 1200000,
	55	1225000, 1250000, 1275000, 1300000,
	56	1325000, 1350000, 1375000, 1400000,
	57	1425000, 1450000, 1475000, 1500000,
	58	1550000, 1600000, 1650000, 1700000,
	59	1750000, 1800000, 1850000, 1900000,
	60	1950000, 2000000, 2050000, 2100000,
	61	2150000, 2200000, 2250000, 2300000,
	62	2350000, 2400000, 2450000, 2500000,
	63	2550000, 2600000, 2650000, 2700000,
	64	2750000, 2800000, 2850000, 2900000,
	65	3000000, 3100000, 3200000, 3300000,
3fa5b8e0 AA	66	};
3fa5b8e0 AA	67
055917ac AL	68	static const unsigned int LDO1_VSEL_table[] = {
	69	1000000, 1100000, 1200000, 1250000,
	70	1300000, 1350000, 1400000, 1500000,
	71	1600000, 1800000, 2500000, 2750000,
	72	2800000, 3000000, 3100000, 3300000,
3fa5b8e0 AA	73	};
3fa5b8e0 AA	74
93b07e7b AL	75	/* The voltage mapping table for LDO2 is the same as VDCDCx */
93b07e7b AL	76	#define LDO2_VSEL_table VDCDCx_VSEL_table
3fa5b8e0	77
3fa5b8e0 AA	78	struct tps_info {
3fa5b8e0 AA	79	const char *name;
3fa5b8e0	80	u8 table_len;
055917ac	81	const unsigned int *table;
7d14831e AA	82
	83	/* Does DCDC high or the low register defines output voltage? */
	84	bool defdcdc_default;
3fa5b8e0 AA	85	};
3fa5b8e0 AA	86
7d14831e	87	static struct tps_info tps6507x_pmic_regs[] = {
31dd6a26 TF	88	{
31dd6a26 TF	89	.name = "VDCDC1",
31dd6a26 TF	90	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	91	.table = VDCDCx_VSEL_table,
	92	},
	93	{
	94	.name = "VDCDC2",
31dd6a26 TF	95	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	96	.table = VDCDCx_VSEL_table,
	97	},
	98	{
	99	.name = "VDCDC3",
31dd6a26 TF	100	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	101	.table = VDCDCx_VSEL_table,
	102	},
	103	{
	104	.name = "LDO1",
31dd6a26 TF	105	.table_len = ARRAY_SIZE(LDO1_VSEL_table),
	106	.table = LDO1_VSEL_table,
	107	},
	108	{
	109	.name = "LDO2",
31dd6a26 TF	110	.table_len = ARRAY_SIZE(LDO2_VSEL_table),
	111	.table = LDO2_VSEL_table,
	112	},
	113	};
	114
4ce5ba5b	115	struct tps6507x_pmic {
3fa5b8e0	116	struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
31dd6a26	117	struct tps6507x_dev *mfd;
7d14831e	118	struct tps_info *info[TPS6507X_NUM_REGULATOR];
3fa5b8e0 AA	119	struct mutex io_lock;
3fa5b8e0 AA	120	};
4ce5ba5b	121	static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0	122	{
31dd6a26 TF	123	u8 val;
	124	int err;
	125
	126	err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
	127
	128	if (err)
	129	return err;
	130
	131	return val;
3fa5b8e0 AA	132	}
3fa5b8e0 AA	133
4ce5ba5b	134	static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0	135	{
31dd6a26	136	return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
3fa5b8e0 AA	137	}
3fa5b8e0 AA	138
4ce5ba5b	139	static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	140	{
	141	int err, data;
	142
	143	mutex_lock(&tps->io_lock);
	144
4ce5ba5b	145	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	146	if (data < 0) {
31dd6a26	147	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	148	err = data;
	149	goto out;
	150	}
	151
	152	data \|= mask;
4ce5ba5b	153	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	154	if (err)
31dd6a26	155	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	156
	157	out:
	158	mutex_unlock(&tps->io_lock);
	159	return err;
	160	}
	161
4ce5ba5b	162	static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	163	{
	164	int err, data;
	165
	166	mutex_lock(&tps->io_lock);
	167
4ce5ba5b	168	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	169	if (data < 0) {
31dd6a26	170	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	171	err = data;
	172	goto out;
	173	}
	174
	175	data &= ~mask;
4ce5ba5b	176	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	177	if (err)
31dd6a26	178	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	179
	180	out:
	181	mutex_unlock(&tps->io_lock);
	182	return err;
	183	}
	184
4ce5ba5b	185	static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0 AA	186	{
	187	int data;
	188
	189	mutex_lock(&tps->io_lock);
	190
4ce5ba5b	191	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	192	if (data < 0)
31dd6a26	193	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	194
	195	mutex_unlock(&tps->io_lock);
	196	return data;
	197	}
	198
4ce5ba5b	199	static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0 AA	200	{
	201	int err;
	202
	203	mutex_lock(&tps->io_lock);
	204
4ce5ba5b	205	err = tps6507x_pmic_write(tps, reg, val);
3fa5b8e0	206	if (err < 0)
31dd6a26	207	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	208
	209	mutex_unlock(&tps->io_lock);
	210	return err;
	211	}
	212
f2933d33	213	static int tps6507x_pmic_is_enabled(struct regulator_dev *dev)
3fa5b8e0	214	{
4ce5ba5b	215	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	216	int data, rid = rdev_get_id(dev);
3fa5b8e0 AA	217	u8 shift;
3fa5b8e0 AA	218
f2933d33	219	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	220	return -EINVAL;
3fa5b8e0 AA	221
f2933d33	222	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b	223	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	224
	225	if (data < 0)
	226	return data;
	227	else
	228	return (data & 1<<shift) ? 1 : 0;
	229	}
	230
f2933d33	231	static int tps6507x_pmic_enable(struct regulator_dev *dev)
3fa5b8e0	232	{
4ce5ba5b	233	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	234	int rid = rdev_get_id(dev);
3fa5b8e0 AA	235	u8 shift;
3fa5b8e0 AA	236
f2933d33	237	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	238	return -EINVAL;
3fa5b8e0 AA	239
f2933d33	240	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b	241	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	242	}
3fa5b8e0 AA	243
f2933d33	244	static int tps6507x_pmic_disable(struct regulator_dev *dev)
3fa5b8e0	245	{
4ce5ba5b	246	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	247	int rid = rdev_get_id(dev);
3fa5b8e0 AA	248	u8 shift;
3fa5b8e0 AA	249
f2933d33	250	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	251	return -EINVAL;
3fa5b8e0 AA	252
f2933d33	253	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b TF	254	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	255	1 << shift);
3fa5b8e0 AA	256	}
3fa5b8e0 AA	257
7c842a1d	258	static int tps6507x_pmic_get_voltage_sel(struct regulator_dev *dev)
3fa5b8e0	259	{
4ce5ba5b	260	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33 AL	261	int data, rid = rdev_get_id(dev);
f2933d33 AL	262	u8 reg, mask;
3fa5b8e0	263
f2933d33	264	switch (rid) {
3fa5b8e0 AA	265	case TPS6507X_DCDC_1:
3fa5b8e0 AA	266	reg = TPS6507X_REG_DEFDCDC1;
f2933d33	267	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	268	break;
3fa5b8e0 AA	269	case TPS6507X_DCDC_2:
f2933d33	270	if (tps->info[rid]->defdcdc_default)
7d14831e AA	271	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	272	else
	273	reg = TPS6507X_REG_DEFDCDC2_LOW;
f2933d33	274	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	275	break;
3fa5b8e0 AA	276	case TPS6507X_DCDC_3:
f2933d33	277	if (tps->info[rid]->defdcdc_default)
7d14831e AA	278	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	279	else
	280	reg = TPS6507X_REG_DEFDCDC3_LOW;
f2933d33 AL	281	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
	282	break;
	283	case TPS6507X_LDO_1:
	284	reg = TPS6507X_REG_LDO_CTRL1;
	285	mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
	286	break;
	287	case TPS6507X_LDO_2:
	288	reg = TPS6507X_REG_DEFLDO2;
	289	mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
3fa5b8e0 AA	290	break;
	291	default:
	292	return -EINVAL;
	293	}
	294
4ce5ba5b	295	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	296	if (data < 0)
	297	return data;
	298
f2933d33	299	data &= mask;
7c842a1d	300	return data;
3fa5b8e0 AA	301	}
3fa5b8e0 AA	302
ca61a7bf AL	303	static int tps6507x_pmic_set_voltage_sel(struct regulator_dev *dev,
ca61a7bf AL	304	unsigned selector)
3fa5b8e0	305	{
4ce5ba5b	306	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
ca61a7bf	307	int data, rid = rdev_get_id(dev);
f2933d33	308	u8 reg, mask;
3fa5b8e0	309
f2933d33	310	switch (rid) {
3fa5b8e0 AA	311	case TPS6507X_DCDC_1:
3fa5b8e0 AA	312	reg = TPS6507X_REG_DEFDCDC1;
f2933d33	313	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	314	break;
3fa5b8e0 AA	315	case TPS6507X_DCDC_2:
f2933d33	316	if (tps->info[rid]->defdcdc_default)
7d14831e AA	317	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	318	else
	319	reg = TPS6507X_REG_DEFDCDC2_LOW;
f2933d33	320	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	321	break;
3fa5b8e0 AA	322	case TPS6507X_DCDC_3:
f2933d33	323	if (tps->info[rid]->defdcdc_default)
7d14831e AA	324	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	325	else
	326	reg = TPS6507X_REG_DEFDCDC3_LOW;
f2933d33 AL	327	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
	328	break;
	329	case TPS6507X_LDO_1:
	330	reg = TPS6507X_REG_LDO_CTRL1;
	331	mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
	332	break;
	333	case TPS6507X_LDO_2:
	334	reg = TPS6507X_REG_DEFLDO2;
	335	mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
3fa5b8e0 AA	336	break;
	337	default:
	338	return -EINVAL;
	339	}
	340
4ce5ba5b	341	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	342	if (data < 0)
	343	return data;
	344
	345	data &= ~mask;
ca61a7bf	346	data \|= selector;
3fa5b8e0	347
4ce5ba5b	348	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	349	}
3fa5b8e0 AA	350
646e268e	351	static const struct regulator_ops tps6507x_pmic_ops = {
f2933d33 AL	352	.is_enabled = tps6507x_pmic_is_enabled,
	353	.enable = tps6507x_pmic_enable,
	354	.disable = tps6507x_pmic_disable,
7c842a1d	355	.get_voltage_sel = tps6507x_pmic_get_voltage_sel,
ca61a7bf	356	.set_voltage_sel = tps6507x_pmic_set_voltage_sel,
055917ac	357	.list_voltage = regulator_list_voltage_table,
a1bb63a8	358	.map_voltage = regulator_map_voltage_ascend,
3fa5b8e0 AA	359	};
3fa5b8e0 AA	360
f979c08f AL	361	static int tps6507x_pmic_of_parse_cb(struct device_node *np,
	362	const struct regulator_desc *desc,
	363	struct regulator_config *config)
6116ad94	364	{
f979c08f AL	365	struct tps6507x_pmic *tps = config->driver_data;
	366	struct tps_info *info = tps->info[desc->id];
	367	u32 prop;
	368	int ret;
6116ad94	369
f979c08f AL	370	ret = of_property_read_u32(np, "ti,defdcdc_default", &prop);
	371	if (!ret)
	372	info->defdcdc_default = prop;
6116ad94	373
f979c08f	374	return 0;
6116ad94	375	}
4246e55f	376
a5023574	377	static int tps6507x_pmic_probe(struct platform_device *pdev)
3fa5b8e0	378	{
31dd6a26	379	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
7d14831e	380	struct tps_info *info = &tps6507x_pmic_regs[0];
c172708d	381	struct regulator_config config = { };
f979c08f	382	struct regulator_init_data *init_data = NULL;
3fa5b8e0	383	struct regulator_dev *rdev;
4ce5ba5b	384	struct tps6507x_pmic *tps;
0bc20bba	385	struct tps6507x_board *tps_board;
3fa5b8e0 AA	386	int i;
3fa5b8e0 AA	387
0bc20bba TF	388	/**
	389	* tps_board points to pmic related constants
	390	* coming from the board-evm file.
	391	*/
	392
31dd6a26	393	tps_board = dev_get_platdata(tps6507x_dev->dev);
f979c08f AL	394	if (tps_board)
f979c08f AL	395	init_data = tps_board->tps6507x_pmic_init_data;
3fa5b8e0	396
9eb0c421	397	tps = devm_kzalloc(&pdev->dev, sizeof(*tps), GFP_KERNEL);
3fa5b8e0 AA	398	if (!tps)
	399	return -ENOMEM;
	400
	401	mutex_init(&tps->io_lock);
	402
	403	/* common for all regulators */
31dd6a26	404	tps->mfd = tps6507x_dev;
3fa5b8e0	405
7d293f56	406	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++) {
3fa5b8e0 AA	407	/* Register the regulators */
3fa5b8e0 AA	408	tps->info[i] = info;
7d293f56	409	if (init_data && init_data[i].driver_data) {
7d14831e	410	struct tps6507x_reg_platform_data *data =
7d293f56	411	init_data[i].driver_data;
f979c08f	412	info->defdcdc_default = data->defdcdc_default;
7d14831e AA	413	}
7d14831e AA	414
3fa5b8e0	415	tps->desc[i].name = info->name;
f979c08f AL	416	tps->desc[i].of_match = of_match_ptr(info->name);
	417	tps->desc[i].regulators_node = of_match_ptr("regulators");
	418	tps->desc[i].of_parse_cb = tps6507x_pmic_of_parse_cb;
77fa44d0	419	tps->desc[i].id = i;
0fcdb109	420	tps->desc[i].n_voltages = info->table_len;
055917ac	421	tps->desc[i].volt_table = info->table;
f2933d33	422	tps->desc[i].ops = &tps6507x_pmic_ops;
3fa5b8e0 AA	423	tps->desc[i].type = REGULATOR_VOLTAGE;
	424	tps->desc[i].owner = THIS_MODULE;
	425
c172708d MB	426	config.dev = tps6507x_dev->dev;
	427	config.init_data = init_data;
	428	config.driver_data = tps;
	429
71b710e7 SK	430	rdev = devm_regulator_register(&pdev->dev, &tps->desc[i],
71b710e7 SK	431	&config);
3fa5b8e0	432	if (IS_ERR(rdev)) {
31dd6a26 TF	433	dev_err(tps6507x_dev->dev,
	434	"failed to register %s regulator\n",
	435	pdev->name);
71b710e7	436	return PTR_ERR(rdev);
3fa5b8e0	437	}
3fa5b8e0 AA	438	}
3fa5b8e0 AA	439
31dd6a26	440	tps6507x_dev->pmic = tps;
d7399fa8	441	platform_set_drvdata(pdev, tps6507x_dev);
3fa5b8e0 AA	442
3fa5b8e0 AA	443	return 0;
3fa5b8e0 AA	444	}
3fa5b8e0 AA	445
31dd6a26	446	static struct platform_driver tps6507x_pmic_driver = {
3fa5b8e0	447	.driver = {
31dd6a26	448	.name = "tps6507x-pmic",
3fa5b8e0	449	},
4ce5ba5b	450	.probe = tps6507x_pmic_probe,
3fa5b8e0 AA	451	};
3fa5b8e0 AA	452
4ce5ba5b	453	static int __init tps6507x_pmic_init(void)
3fa5b8e0	454	{
31dd6a26	455	return platform_driver_register(&tps6507x_pmic_driver);
3fa5b8e0	456	}
4ce5ba5b	457	subsys_initcall(tps6507x_pmic_init);
3fa5b8e0	458
4ce5ba5b	459	static void __exit tps6507x_pmic_cleanup(void)
3fa5b8e0	460	{
31dd6a26	461	platform_driver_unregister(&tps6507x_pmic_driver);
3fa5b8e0	462	}
4ce5ba5b	463	module_exit(tps6507x_pmic_cleanup);
3fa5b8e0 AA	464
	465	MODULE_AUTHOR("Texas Instruments");
	466	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
9e108d33	467	MODULE_LICENSE("GPL v2");
31dd6a26	468	MODULE_ALIAS("platform:tps6507x-pmic");