[linux-block.git] / drivers / regulator / tps6507x-regulator.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * tps6507x-regulator.c
 *
 * Regulator driver for TPS65073 PMIC
 *
 * Copyright (C) 2009 Texas Instrument Incorporated - https://www.ti.com/
 */

#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_type = PROBE_PREFER_ASYNCHRONOUS,
	},
	.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
2aec85b2	1	// SPDX-License-Identifier: GPL-2.0-only
3fa5b8e0 AA	2	/*
	3	* tps6507x-regulator.c
	4	*
	5	* Regulator driver for TPS65073 PMIC
	6	*
2ca76b3e	7	* Copyright (C) 2009 Texas Instrument Incorporated - https://www.ti.com/
3fa5b8e0 AA	8	*/
	9
	10	#include <linux/kernel.h>
	11	#include <linux/module.h>
	12	#include <linux/init.h>
	13	#include <linux/err.h>
	14	#include <linux/platform_device.h>
	15	#include <linux/regulator/driver.h>
	16	#include <linux/regulator/machine.h>
7d14831e	17	#include <linux/regulator/tps6507x.h>
6116ad94	18	#include <linux/of.h>
5a0e3ad6	19	#include <linux/slab.h>
d183fcc9	20	#include <linux/mfd/tps6507x.h>
6116ad94	21	#include <linux/regulator/of_regulator.h>
3fa5b8e0 AA	22
	23	/* DCDC's */
	24	#define TPS6507X_DCDC_1 0
	25	#define TPS6507X_DCDC_2 1
	26	#define TPS6507X_DCDC_3 2
	27	/* LDOs */
	28	#define TPS6507X_LDO_1 3
	29	#define TPS6507X_LDO_2 4
	30
	31	#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
	32
	33	/* Number of step-down converters available */
	34	#define TPS6507X_NUM_DCDC 3
	35	/* Number of LDO voltage regulators available */
	36	#define TPS6507X_NUM_LDO 2
	37	/* Number of total regulators available */
	38	#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
	39
055917ac AL	40	/* Supported voltage values for regulators (in microVolts) */
	41	static const unsigned int VDCDCx_VSEL_table[] = {
	42	725000, 750000, 775000, 800000,
	43	825000, 850000, 875000, 900000,
	44	925000, 950000, 975000, 1000000,
	45	1025000, 1050000, 1075000, 1100000,
	46	1125000, 1150000, 1175000, 1200000,
	47	1225000, 1250000, 1275000, 1300000,
	48	1325000, 1350000, 1375000, 1400000,
	49	1425000, 1450000, 1475000, 1500000,
	50	1550000, 1600000, 1650000, 1700000,
	51	1750000, 1800000, 1850000, 1900000,
	52	1950000, 2000000, 2050000, 2100000,
	53	2150000, 2200000, 2250000, 2300000,
	54	2350000, 2400000, 2450000, 2500000,
	55	2550000, 2600000, 2650000, 2700000,
	56	2750000, 2800000, 2850000, 2900000,
	57	3000000, 3100000, 3200000, 3300000,
3fa5b8e0 AA	58	};
3fa5b8e0 AA	59
055917ac AL	60	static const unsigned int LDO1_VSEL_table[] = {
	61	1000000, 1100000, 1200000, 1250000,
	62	1300000, 1350000, 1400000, 1500000,
	63	1600000, 1800000, 2500000, 2750000,
	64	2800000, 3000000, 3100000, 3300000,
3fa5b8e0 AA	65	};
3fa5b8e0 AA	66
93b07e7b AL	67	/* The voltage mapping table for LDO2 is the same as VDCDCx */
93b07e7b AL	68	#define LDO2_VSEL_table VDCDCx_VSEL_table
3fa5b8e0	69
3fa5b8e0 AA	70	struct tps_info {
3fa5b8e0 AA	71	const char *name;
3fa5b8e0	72	u8 table_len;
055917ac	73	const unsigned int *table;
7d14831e AA	74
	75	/* Does DCDC high or the low register defines output voltage? */
	76	bool defdcdc_default;
3fa5b8e0 AA	77	};
3fa5b8e0 AA	78
7d14831e	79	static struct tps_info tps6507x_pmic_regs[] = {
31dd6a26 TF	80	{
31dd6a26 TF	81	.name = "VDCDC1",
31dd6a26 TF	82	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	83	.table = VDCDCx_VSEL_table,
	84	},
	85	{
	86	.name = "VDCDC2",
31dd6a26 TF	87	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	88	.table = VDCDCx_VSEL_table,
	89	},
	90	{
	91	.name = "VDCDC3",
31dd6a26 TF	92	.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
	93	.table = VDCDCx_VSEL_table,
	94	},
	95	{
	96	.name = "LDO1",
31dd6a26 TF	97	.table_len = ARRAY_SIZE(LDO1_VSEL_table),
	98	.table = LDO1_VSEL_table,
	99	},
	100	{
	101	.name = "LDO2",
31dd6a26 TF	102	.table_len = ARRAY_SIZE(LDO2_VSEL_table),
	103	.table = LDO2_VSEL_table,
	104	},
	105	};
	106
4ce5ba5b	107	struct tps6507x_pmic {
3fa5b8e0	108	struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
31dd6a26	109	struct tps6507x_dev *mfd;
7d14831e	110	struct tps_info *info[TPS6507X_NUM_REGULATOR];
3fa5b8e0 AA	111	struct mutex io_lock;
3fa5b8e0 AA	112	};
4ce5ba5b	113	static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0	114	{
31dd6a26 TF	115	u8 val;
	116	int err;
	117
	118	err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
	119
	120	if (err)
	121	return err;
	122
	123	return val;
3fa5b8e0 AA	124	}
3fa5b8e0 AA	125
4ce5ba5b	126	static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0	127	{
31dd6a26	128	return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
3fa5b8e0 AA	129	}
3fa5b8e0 AA	130
4ce5ba5b	131	static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	132	{
	133	int err, data;
	134
	135	mutex_lock(&tps->io_lock);
	136
4ce5ba5b	137	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	138	if (data < 0) {
31dd6a26	139	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	140	err = data;
	141	goto out;
	142	}
	143
	144	data \|= mask;
4ce5ba5b	145	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	146	if (err)
31dd6a26	147	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	148
	149	out:
	150	mutex_unlock(&tps->io_lock);
	151	return err;
	152	}
	153
4ce5ba5b	154	static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
3fa5b8e0 AA	155	{
	156	int err, data;
	157
	158	mutex_lock(&tps->io_lock);
	159
4ce5ba5b	160	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	161	if (data < 0) {
31dd6a26	162	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	163	err = data;
	164	goto out;
	165	}
	166
	167	data &= ~mask;
4ce5ba5b	168	err = tps6507x_pmic_write(tps, reg, data);
3fa5b8e0	169	if (err)
31dd6a26	170	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	171
	172	out:
	173	mutex_unlock(&tps->io_lock);
	174	return err;
	175	}
	176
4ce5ba5b	177	static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
3fa5b8e0 AA	178	{
	179	int data;
	180
	181	mutex_lock(&tps->io_lock);
	182
4ce5ba5b	183	data = tps6507x_pmic_read(tps, reg);
3fa5b8e0	184	if (data < 0)
31dd6a26	185	dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
3fa5b8e0 AA	186
	187	mutex_unlock(&tps->io_lock);
	188	return data;
	189	}
	190
4ce5ba5b	191	static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
3fa5b8e0 AA	192	{
	193	int err;
	194
	195	mutex_lock(&tps->io_lock);
	196
4ce5ba5b	197	err = tps6507x_pmic_write(tps, reg, val);
3fa5b8e0	198	if (err < 0)
31dd6a26	199	dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
3fa5b8e0 AA	200
	201	mutex_unlock(&tps->io_lock);
	202	return err;
	203	}
	204
f2933d33	205	static int tps6507x_pmic_is_enabled(struct regulator_dev *dev)
3fa5b8e0	206	{
4ce5ba5b	207	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	208	int data, rid = rdev_get_id(dev);
3fa5b8e0 AA	209	u8 shift;
3fa5b8e0 AA	210
f2933d33	211	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	212	return -EINVAL;
3fa5b8e0 AA	213
f2933d33	214	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b	215	data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
3fa5b8e0 AA	216
	217	if (data < 0)
	218	return data;
	219	else
	220	return (data & 1<<shift) ? 1 : 0;
	221	}
	222
f2933d33	223	static int tps6507x_pmic_enable(struct regulator_dev *dev)
3fa5b8e0	224	{
4ce5ba5b	225	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	226	int rid = rdev_get_id(dev);
3fa5b8e0 AA	227	u8 shift;
3fa5b8e0 AA	228
f2933d33	229	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	230	return -EINVAL;
3fa5b8e0 AA	231
f2933d33	232	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b	233	return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
3fa5b8e0 AA	234	}
3fa5b8e0 AA	235
f2933d33	236	static int tps6507x_pmic_disable(struct regulator_dev *dev)
3fa5b8e0	237	{
4ce5ba5b	238	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33	239	int rid = rdev_get_id(dev);
3fa5b8e0 AA	240	u8 shift;
3fa5b8e0 AA	241
f2933d33	242	if (rid < TPS6507X_DCDC_1 \|\| rid > TPS6507X_LDO_2)
3fa5b8e0 AA	243	return -EINVAL;
3fa5b8e0 AA	244
f2933d33	245	shift = TPS6507X_MAX_REG_ID - rid;
4ce5ba5b TF	246	return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
4ce5ba5b TF	247	1 << shift);
3fa5b8e0 AA	248	}
3fa5b8e0 AA	249
7c842a1d	250	static int tps6507x_pmic_get_voltage_sel(struct regulator_dev *dev)
3fa5b8e0	251	{
4ce5ba5b	252	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
f2933d33 AL	253	int data, rid = rdev_get_id(dev);
f2933d33 AL	254	u8 reg, mask;
3fa5b8e0	255
f2933d33	256	switch (rid) {
3fa5b8e0 AA	257	case TPS6507X_DCDC_1:
3fa5b8e0 AA	258	reg = TPS6507X_REG_DEFDCDC1;
f2933d33	259	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	260	break;
3fa5b8e0 AA	261	case TPS6507X_DCDC_2:
f2933d33	262	if (tps->info[rid]->defdcdc_default)
7d14831e AA	263	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	264	else
	265	reg = TPS6507X_REG_DEFDCDC2_LOW;
f2933d33	266	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	267	break;
3fa5b8e0 AA	268	case TPS6507X_DCDC_3:
f2933d33	269	if (tps->info[rid]->defdcdc_default)
7d14831e AA	270	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	271	else
	272	reg = TPS6507X_REG_DEFDCDC3_LOW;
f2933d33 AL	273	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
	274	break;
	275	case TPS6507X_LDO_1:
	276	reg = TPS6507X_REG_LDO_CTRL1;
	277	mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
	278	break;
	279	case TPS6507X_LDO_2:
	280	reg = TPS6507X_REG_DEFLDO2;
	281	mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
3fa5b8e0 AA	282	break;
	283	default:
	284	return -EINVAL;
	285	}
	286
4ce5ba5b	287	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	288	if (data < 0)
	289	return data;
	290
f2933d33	291	data &= mask;
7c842a1d	292	return data;
3fa5b8e0 AA	293	}
3fa5b8e0 AA	294
ca61a7bf AL	295	static int tps6507x_pmic_set_voltage_sel(struct regulator_dev *dev,
ca61a7bf AL	296	unsigned selector)
3fa5b8e0	297	{
4ce5ba5b	298	struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
ca61a7bf	299	int data, rid = rdev_get_id(dev);
f2933d33	300	u8 reg, mask;
3fa5b8e0	301
f2933d33	302	switch (rid) {
3fa5b8e0 AA	303	case TPS6507X_DCDC_1:
3fa5b8e0 AA	304	reg = TPS6507X_REG_DEFDCDC1;
f2933d33	305	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	306	break;
3fa5b8e0 AA	307	case TPS6507X_DCDC_2:
f2933d33	308	if (tps->info[rid]->defdcdc_default)
7d14831e AA	309	reg = TPS6507X_REG_DEFDCDC2_HIGH;
	310	else
	311	reg = TPS6507X_REG_DEFDCDC2_LOW;
f2933d33	312	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
3fa5b8e0 AA	313	break;
3fa5b8e0 AA	314	case TPS6507X_DCDC_3:
f2933d33	315	if (tps->info[rid]->defdcdc_default)
7d14831e AA	316	reg = TPS6507X_REG_DEFDCDC3_HIGH;
	317	else
	318	reg = TPS6507X_REG_DEFDCDC3_LOW;
f2933d33 AL	319	mask = TPS6507X_DEFDCDCX_DCDC_MASK;
	320	break;
	321	case TPS6507X_LDO_1:
	322	reg = TPS6507X_REG_LDO_CTRL1;
	323	mask = TPS6507X_REG_LDO_CTRL1_LDO1_MASK;
	324	break;
	325	case TPS6507X_LDO_2:
	326	reg = TPS6507X_REG_DEFLDO2;
	327	mask = TPS6507X_REG_DEFLDO2_LDO2_MASK;
3fa5b8e0 AA	328	break;
	329	default:
	330	return -EINVAL;
	331	}
	332
4ce5ba5b	333	data = tps6507x_pmic_reg_read(tps, reg);
3fa5b8e0 AA	334	if (data < 0)
	335	return data;
	336
	337	data &= ~mask;
ca61a7bf	338	data \|= selector;
3fa5b8e0	339
4ce5ba5b	340	return tps6507x_pmic_reg_write(tps, reg, data);
3fa5b8e0 AA	341	}
3fa5b8e0 AA	342
646e268e	343	static const struct regulator_ops tps6507x_pmic_ops = {
f2933d33 AL	344	.is_enabled = tps6507x_pmic_is_enabled,
	345	.enable = tps6507x_pmic_enable,
	346	.disable = tps6507x_pmic_disable,
7c842a1d	347	.get_voltage_sel = tps6507x_pmic_get_voltage_sel,
ca61a7bf	348	.set_voltage_sel = tps6507x_pmic_set_voltage_sel,
055917ac	349	.list_voltage = regulator_list_voltage_table,
a1bb63a8	350	.map_voltage = regulator_map_voltage_ascend,
3fa5b8e0 AA	351	};
3fa5b8e0 AA	352
f979c08f AL	353	static int tps6507x_pmic_of_parse_cb(struct device_node *np,
	354	const struct regulator_desc *desc,
	355	struct regulator_config *config)
6116ad94	356	{
f979c08f AL	357	struct tps6507x_pmic *tps = config->driver_data;
	358	struct tps_info *info = tps->info[desc->id];
	359	u32 prop;
	360	int ret;
6116ad94	361
f979c08f AL	362	ret = of_property_read_u32(np, "ti,defdcdc_default", &prop);
	363	if (!ret)
	364	info->defdcdc_default = prop;
6116ad94	365
f979c08f	366	return 0;
6116ad94	367	}
4246e55f	368
a5023574	369	static int tps6507x_pmic_probe(struct platform_device *pdev)
3fa5b8e0	370	{
31dd6a26	371	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
7d14831e	372	struct tps_info *info = &tps6507x_pmic_regs[0];
c172708d	373	struct regulator_config config = { };
f979c08f	374	struct regulator_init_data *init_data = NULL;
3fa5b8e0	375	struct regulator_dev *rdev;
4ce5ba5b	376	struct tps6507x_pmic *tps;
0bc20bba	377	struct tps6507x_board *tps_board;
3fa5b8e0 AA	378	int i;
3fa5b8e0 AA	379
0bc20bba TF	380	/**
	381	* tps_board points to pmic related constants
	382	* coming from the board-evm file.
	383	*/
	384
31dd6a26	385	tps_board = dev_get_platdata(tps6507x_dev->dev);
f979c08f AL	386	if (tps_board)
f979c08f AL	387	init_data = tps_board->tps6507x_pmic_init_data;
3fa5b8e0	388
9eb0c421	389	tps = devm_kzalloc(&pdev->dev, sizeof(*tps), GFP_KERNEL);
3fa5b8e0 AA	390	if (!tps)
	391	return -ENOMEM;
	392
	393	mutex_init(&tps->io_lock);
	394
	395	/* common for all regulators */
31dd6a26	396	tps->mfd = tps6507x_dev;
3fa5b8e0	397
7d293f56	398	for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++) {
3fa5b8e0 AA	399	/* Register the regulators */
3fa5b8e0 AA	400	tps->info[i] = info;
7d293f56	401	if (init_data && init_data[i].driver_data) {
7d14831e	402	struct tps6507x_reg_platform_data *data =
7d293f56	403	init_data[i].driver_data;
f979c08f	404	info->defdcdc_default = data->defdcdc_default;
7d14831e AA	405	}
7d14831e AA	406
3fa5b8e0	407	tps->desc[i].name = info->name;
f979c08f AL	408	tps->desc[i].of_match = of_match_ptr(info->name);
	409	tps->desc[i].regulators_node = of_match_ptr("regulators");
	410	tps->desc[i].of_parse_cb = tps6507x_pmic_of_parse_cb;
77fa44d0	411	tps->desc[i].id = i;
0fcdb109	412	tps->desc[i].n_voltages = info->table_len;
055917ac	413	tps->desc[i].volt_table = info->table;
f2933d33	414	tps->desc[i].ops = &tps6507x_pmic_ops;
3fa5b8e0 AA	415	tps->desc[i].type = REGULATOR_VOLTAGE;
	416	tps->desc[i].owner = THIS_MODULE;
	417
c172708d MB	418	config.dev = tps6507x_dev->dev;
	419	config.init_data = init_data;
	420	config.driver_data = tps;
	421
71b710e7 SK	422	rdev = devm_regulator_register(&pdev->dev, &tps->desc[i],
71b710e7 SK	423	&config);
3fa5b8e0	424	if (IS_ERR(rdev)) {
31dd6a26 TF	425	dev_err(tps6507x_dev->dev,
	426	"failed to register %s regulator\n",
	427	pdev->name);
71b710e7	428	return PTR_ERR(rdev);
3fa5b8e0	429	}
3fa5b8e0 AA	430	}
3fa5b8e0 AA	431
31dd6a26	432	tps6507x_dev->pmic = tps;
d7399fa8	433	platform_set_drvdata(pdev, tps6507x_dev);
3fa5b8e0 AA	434
3fa5b8e0 AA	435	return 0;
3fa5b8e0 AA	436	}
3fa5b8e0 AA	437
31dd6a26	438	static struct platform_driver tps6507x_pmic_driver = {
3fa5b8e0	439	.driver = {
31dd6a26	440	.name = "tps6507x-pmic",
259b93b2	441	.probe_type = PROBE_PREFER_ASYNCHRONOUS,
3fa5b8e0	442	},
4ce5ba5b	443	.probe = tps6507x_pmic_probe,
3fa5b8e0 AA	444	};
3fa5b8e0 AA	445
4ce5ba5b	446	static int __init tps6507x_pmic_init(void)
3fa5b8e0	447	{
31dd6a26	448	return platform_driver_register(&tps6507x_pmic_driver);
3fa5b8e0	449	}
4ce5ba5b	450	subsys_initcall(tps6507x_pmic_init);
3fa5b8e0	451
4ce5ba5b	452	static void __exit tps6507x_pmic_cleanup(void)
3fa5b8e0	453	{
31dd6a26	454	platform_driver_unregister(&tps6507x_pmic_driver);
3fa5b8e0	455	}
4ce5ba5b	456	module_exit(tps6507x_pmic_cleanup);
3fa5b8e0 AA	457
	458	MODULE_AUTHOR("Texas Instruments");
	459	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
9e108d33	460	MODULE_LICENSE("GPL v2");
31dd6a26	461	MODULE_ALIAS("platform:tps6507x-pmic");