[deliverable/linux.git] / drivers / regulator / tps65217-regulator.c

/*
 * tps65217-regulator.c
 *
 * Regulator driver for TPS65217 PMIC
 *
 * Copyright (C) 2011 Texas Instruments 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/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>

#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps65217.h>

#define TPS65217_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _em, _t, _lr, _nlr) \
	{						\
		.name		= _name,		\
		.id		= _id,			\
		.ops		= &_ops,		\
		.n_voltages	= _n,			\
		.type		= REGULATOR_VOLTAGE,	\
		.owner		= THIS_MODULE,		\
		.vsel_reg	= _vr,			\
		.vsel_mask	= _vm,			\
		.enable_reg	= TPS65217_REG_ENABLE,	\
		.enable_mask	= _em,			\
		.volt_table	= _t,			\
		.linear_ranges	= _lr,			\
		.n_linear_ranges = _nlr,		\
	}						\

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

static const struct regulator_linear_range tps65217_uv1_ranges[] = {
	{ .min_uV = 900000, .max_uV = 1500000, .min_sel =  0, .max_sel = 24,
	  .uV_step = 25000 },
	{ .min_uV = 1550000, .max_uV = 1800000, .min_sel = 25, .max_sel = 30,
	  .uV_step = 50000 },
	{ .min_uV = 1850000, .max_uV = 2900000, .min_sel = 31, .max_sel = 52,
	  .uV_step = 50000 },
	{ .min_uV = 3000000, .max_uV = 3200000, .min_sel = 53, .max_sel = 55,
	  .uV_step = 100000 },
	{ .min_uV = 3300000, .max_uV = 3300000, .min_sel = 56, .max_sel = 62,
	  .uV_step = 0 },
};

static const struct regulator_linear_range tps65217_uv2_ranges[] = {
	{ .min_uV = 1500000, .max_uV = 1900000, .min_sel =  0, .max_sel = 8,
	  .uV_step = 50000 },
	{ .min_uV = 2000000, .max_uV = 2400000, .min_sel = 9, .max_sel = 13,
	  .uV_step = 100000 },
	{ .min_uV = 2450000, .max_uV = 3300000, .min_sel = 14, .max_sel = 31,
	  .uV_step = 50000 },
};

static int tps65217_pmic_enable(struct regulator_dev *dev)
{
	struct tps65217 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
		return -EINVAL;

	/* Enable the regulator and password protection is level 1 */
	return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
				 dev->desc->enable_mask, dev->desc->enable_mask,
				 TPS65217_PROTECT_L1);
}

static int tps65217_pmic_disable(struct regulator_dev *dev)
{
	struct tps65217 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
		return -EINVAL;

	/* Disable the regulator and password protection is level 1 */
	return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
				   dev->desc->enable_mask, TPS65217_PROTECT_L1);
}

static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev,
					 unsigned selector)
{
	int ret;
	struct tps65217 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	/* Set the voltage based on vsel value and write protect level is 2 */
	ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
				selector, TPS65217_PROTECT_L2);

	/* Set GO bit for DCDCx to initiate voltage transistion */
	switch (rid) {
	case TPS65217_DCDC_1 ... TPS65217_DCDC_3:
		ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
				       TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
				       TPS65217_PROTECT_L2);
		break;
	}

	return ret;
}

/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
static struct regulator_ops tps65217_pmic_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65217_pmic_enable,
	.disable		= tps65217_pmic_disable,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= tps65217_pmic_set_voltage_sel,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
};

/* Operations permitted on LDO1 */
static struct regulator_ops tps65217_pmic_ldo1_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65217_pmic_enable,
	.disable		= tps65217_pmic_disable,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= tps65217_pmic_set_voltage_sel,
	.list_voltage		= regulator_list_voltage_table,
};

static const struct regulator_desc regulators[] = {
	TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, tps65217_pmic_ops, 64,
			   TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK,
			   TPS65217_ENABLE_DC1_EN, NULL, tps65217_uv1_ranges,
			   2),	/* DCDC1 voltage range: 900000 ~ 1800000 */
	TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, tps65217_pmic_ops, 64,
			   TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK,
			   TPS65217_ENABLE_DC2_EN, NULL, tps65217_uv1_ranges,
			   ARRAY_SIZE(tps65217_uv1_ranges)),
	TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, tps65217_pmic_ops, 64,
			   TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK,
			   TPS65217_ENABLE_DC3_EN, NULL, tps65217_uv1_ranges,
			   1),	/* DCDC3 voltage range: 900000 ~ 1500000 */
	TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, tps65217_pmic_ldo1_ops, 16,
			   TPS65217_REG_DEFLDO1, TPS65217_DEFLDO1_LDO1_MASK,
			   TPS65217_ENABLE_LDO1_EN, LDO1_VSEL_table, NULL, 0),
	TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, tps65217_pmic_ops, 64,
			   TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK,
			   TPS65217_ENABLE_LDO2_EN, NULL, tps65217_uv1_ranges,
			   ARRAY_SIZE(tps65217_uv1_ranges)),
	TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, tps65217_pmic_ops, 32,
			   TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK,
			   TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
			   NULL, tps65217_uv2_ranges,
			   ARRAY_SIZE(tps65217_uv2_ranges)),
	TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, tps65217_pmic_ops, 32,
			   TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK,
			   TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
			   NULL, tps65217_uv2_ranges,
			   ARRAY_SIZE(tps65217_uv2_ranges)),
};

#ifdef CONFIG_OF
static struct of_regulator_match reg_matches[] = {
	{ .name = "dcdc1", .driver_data = (void *)TPS65217_DCDC_1 },
	{ .name = "dcdc2", .driver_data = (void *)TPS65217_DCDC_2 },
	{ .name = "dcdc3", .driver_data = (void *)TPS65217_DCDC_3 },
	{ .name = "ldo1", .driver_data = (void *)TPS65217_LDO_1 },
	{ .name = "ldo2", .driver_data = (void *)TPS65217_LDO_2 },
	{ .name = "ldo3", .driver_data = (void *)TPS65217_LDO_3 },
	{ .name = "ldo4", .driver_data = (void *)TPS65217_LDO_4 },
};

static struct tps65217_board *tps65217_parse_dt(struct platform_device *pdev)
{
	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
	struct device_node *node = tps->dev->of_node;
	struct tps65217_board *pdata;
	struct device_node *regs;
	int i, count;

	regs = of_find_node_by_name(node, "regulators");
	if (!regs)
		return NULL;

	count = of_regulator_match(&pdev->dev, regs, reg_matches,
				   TPS65217_NUM_REGULATOR);
	of_node_put(regs);
	if ((count < 0) || (count > TPS65217_NUM_REGULATOR))
		return NULL;

	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return NULL;

	for (i = 0; i < count; i++) {
		if (!reg_matches[i].init_data || !reg_matches[i].of_node)
			continue;

		pdata->tps65217_init_data[i] = reg_matches[i].init_data;
		pdata->of_node[i] = reg_matches[i].of_node;
	}

	return pdata;
}
#else
static struct tps65217_board *tps65217_parse_dt(struct platform_device *pdev)
{
	return NULL;
}
#endif

static int tps65217_regulator_probe(struct platform_device *pdev)
{
	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
	struct tps65217_board *pdata = dev_get_platdata(tps->dev);
	struct regulator_init_data *reg_data;
	struct regulator_dev *rdev;
	struct regulator_config config = { };
	int i, ret;

	if (tps->dev->of_node)
		pdata = tps65217_parse_dt(pdev);

	if (!pdata) {
		dev_err(&pdev->dev, "Platform data not found\n");
		return -EINVAL;
	}

	if (tps65217_chip_id(tps) != TPS65217) {
		dev_err(&pdev->dev, "Invalid tps chip version\n");
		return -ENODEV;
	}

	platform_set_drvdata(pdev, tps);

	for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {

		reg_data = pdata->tps65217_init_data[i];

		/*
		 * Regulator API handles empty constraints but not NULL
		 * constraints
		 */
		if (!reg_data)
			continue;

		/* Register the regulators */
		config.dev = tps->dev;
		config.init_data = reg_data;
		config.driver_data = tps;
		config.regmap = tps->regmap;
		if (tps->dev->of_node)
			config.of_node = pdata->of_node[i];

		rdev = regulator_register(&regulators[i], &config);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "failed to register %s regulator\n",
				pdev->name);
			ret = PTR_ERR(rdev);
			goto err_unregister_regulator;
		}

		/* Save regulator for cleanup */
		tps->rdev[i] = rdev;
	}
	return 0;

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

	return ret;
}

static int tps65217_regulator_remove(struct platform_device *pdev)
{
	struct tps65217 *tps = platform_get_drvdata(pdev);
	unsigned int i;

	for (i = 0; i < TPS65217_NUM_REGULATOR; i++)
		regulator_unregister(tps->rdev[i]);

	return 0;
}

static struct platform_driver tps65217_regulator_driver = {
	.driver = {
		.name = "tps65217-pmic",
	},
	.probe = tps65217_regulator_probe,
	.remove = tps65217_regulator_remove,
};

static int __init tps65217_regulator_init(void)
{
	return platform_driver_register(&tps65217_regulator_driver);
}
subsys_initcall(tps65217_regulator_init);

static void __exit tps65217_regulator_exit(void)
{
	platform_driver_unregister(&tps65217_regulator_driver);
}
module_exit(tps65217_regulator_exit);

MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
MODULE_ALIAS("platform:tps65217-pmic");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
a493077f AC	1	/*
	2	* tps65217-regulator.c
	3	*
	4	* Regulator driver for TPS65217 PMIC
	5	*
	6	* Copyright (C) 2011 Texas Instruments 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
	13	* kind, whether express or implied; without even the implied warranty
	14	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*/
	17
	18	#include <linux/kernel.h>
	19	#include <linux/module.h>
	20	#include <linux/device.h>
	21	#include <linux/init.h>
	22	#include <linux/err.h>
	23	#include <linux/platform_device.h>
	24
1922b0f2	25	#include <linux/regulator/of_regulator.h>
a493077f AC	26	#include <linux/regulator/driver.h>
	27	#include <linux/regulator/machine.h>
	28	#include <linux/mfd/tps65217.h>
	29
6290d606	30	#define TPS65217_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _em, _t, _lr, _nlr) \
a493077f AC	31	{ \
	32	.name = _name, \
	33	.id = _id, \
	34	.ops = &_ops, \
	35	.n_voltages = _n, \
	36	.type = REGULATOR_VOLTAGE, \
	37	.owner = THIS_MODULE, \
b4bc9ef6 AL	38	.vsel_reg = _vr, \
	39	.vsel_mask = _vm, \
	40	.enable_reg = TPS65217_REG_ENABLE, \
	41	.enable_mask = _em, \
d172f319	42	.volt_table = _t, \
6290d606 AL	43	.linear_ranges = _lr, \
6290d606 AL	44	.n_linear_ranges = _nlr, \
a493077f AC	45	} \
a493077f AC	46
d172f319	47	static const unsigned int LDO1_VSEL_table[] = {
a493077f AC	48	1000000, 1100000, 1200000, 1250000,
	49	1300000, 1350000, 1400000, 1500000,
	50	1600000, 1800000, 2500000, 2750000,
	51	2800000, 3000000, 3100000, 3300000,
	52	};
	53
6290d606 AL	54	static const struct regulator_linear_range tps65217_uv1_ranges[] = {
	55	{ .min_uV = 900000, .max_uV = 1500000, .min_sel = 0, .max_sel = 24,
	56	.uV_step = 25000 },
	57	{ .min_uV = 1550000, .max_uV = 1800000, .min_sel = 25, .max_sel = 30,
	58	.uV_step = 50000 },
	59	{ .min_uV = 1850000, .max_uV = 2900000, .min_sel = 31, .max_sel = 52,
	60	.uV_step = 50000 },
	61	{ .min_uV = 3000000, .max_uV = 3200000, .min_sel = 53, .max_sel = 55,
	62	.uV_step = 100000 },
	63	{ .min_uV = 3300000, .max_uV = 3300000, .min_sel = 56, .max_sel = 62,
	64	.uV_step = 0 },
	65	};
a493077f	66
6290d606 AL	67	static const struct regulator_linear_range tps65217_uv2_ranges[] = {
	68	{ .min_uV = 1500000, .max_uV = 1900000, .min_sel = 0, .max_sel = 8,
	69	.uV_step = 50000 },
	70	{ .min_uV = 2000000, .max_uV = 2400000, .min_sel = 9, .max_sel = 13,
	71	.uV_step = 100000 },
	72	{ .min_uV = 2450000, .max_uV = 3300000, .min_sel = 14, .max_sel = 31,
	73	.uV_step = 50000 },
a493077f AC	74	};
a493077f AC	75
fc56911b	76	static int tps65217_pmic_enable(struct regulator_dev *dev)
a493077f	77	{
a493077f	78	struct tps65217 *tps = rdev_get_drvdata(dev);
fc56911b	79	unsigned int rid = rdev_get_id(dev);
a493077f	80
fc56911b	81	if (rid < TPS65217_DCDC_1 \|\| rid > TPS65217_LDO_4)
a493077f AC	82	return -EINVAL;
	83
	84	/* Enable the regulator and password protection is level 1 */
	85	return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
b4bc9ef6 AL	86	dev->desc->enable_mask, dev->desc->enable_mask,
b4bc9ef6 AL	87	TPS65217_PROTECT_L1);
a493077f AC	88	}
a493077f AC	89
fc56911b	90	static int tps65217_pmic_disable(struct regulator_dev *dev)
a493077f AC	91	{
a493077f AC	92	struct tps65217 *tps = rdev_get_drvdata(dev);
fc56911b	93	unsigned int rid = rdev_get_id(dev);
a493077f	94
fc56911b	95	if (rid < TPS65217_DCDC_1 \|\| rid > TPS65217_LDO_4)
a493077f AC	96	return -EINVAL;
	97
	98	/* Disable the regulator and password protection is level 1 */
	99	return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
b4bc9ef6	100	dev->desc->enable_mask, TPS65217_PROTECT_L1);
a493077f AC	101	}
a493077f AC	102
8b22285f AL	103	static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev,
8b22285f AL	104	unsigned selector)
a493077f	105	{
8b22285f	106	int ret;
a493077f	107	struct tps65217 *tps = rdev_get_drvdata(dev);
8b22285f	108	unsigned int rid = rdev_get_id(dev);
a493077f	109
8b22285f	110	/* Set the voltage based on vsel value and write protect level is 2 */
b4bc9ef6	111	ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
8b22285f	112	selector, TPS65217_PROTECT_L2);
a493077f	113
8b22285f AL	114	/* Set GO bit for DCDCx to initiate voltage transistion */
	115	switch (rid) {
	116	case TPS65217_DCDC_1 ... TPS65217_DCDC_3:
	117	ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
	118	TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
	119	TPS65217_PROTECT_L2);
	120	break;
	121	}
a493077f	122
8b22285f	123	return ret;
a493077f AC	124	}
a493077f AC	125
fc56911b AL	126	/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
fc56911b AL	127	static struct regulator_ops tps65217_pmic_ops = {
b4bc9ef6	128	.is_enabled = regulator_is_enabled_regmap,
fc56911b AL	129	.enable = tps65217_pmic_enable,
fc56911b AL	130	.disable = tps65217_pmic_disable,
b4bc9ef6	131	.get_voltage_sel = regulator_get_voltage_sel_regmap,
8b22285f	132	.set_voltage_sel = tps65217_pmic_set_voltage_sel,
6290d606 AL	133	.list_voltage = regulator_list_voltage_linear_range,
6290d606 AL	134	.map_voltage = regulator_map_voltage_linear_range,
a493077f AC	135	};
	136
	137	/* Operations permitted on LDO1 */
	138	static struct regulator_ops tps65217_pmic_ldo1_ops = {
b4bc9ef6	139	.is_enabled = regulator_is_enabled_regmap,
fc56911b AL	140	.enable = tps65217_pmic_enable,
fc56911b AL	141	.disable = tps65217_pmic_disable,
b4bc9ef6	142	.get_voltage_sel = regulator_get_voltage_sel_regmap,
8b22285f	143	.set_voltage_sel = tps65217_pmic_set_voltage_sel,
d172f319	144	.list_voltage = regulator_list_voltage_table,
a493077f AC	145	};
a493077f AC	146
78637a3d	147	static const struct regulator_desc regulators[] = {
b4bc9ef6 AL	148	TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, tps65217_pmic_ops, 64,
b4bc9ef6 AL	149	TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK,
6290d606 AL	150	TPS65217_ENABLE_DC1_EN, NULL, tps65217_uv1_ranges,
6290d606 AL	151	2), /* DCDC1 voltage range: 900000 ~ 1800000 */
b4bc9ef6 AL	152	TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, tps65217_pmic_ops, 64,
b4bc9ef6 AL	153	TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK,
6290d606 AL	154	TPS65217_ENABLE_DC2_EN, NULL, tps65217_uv1_ranges,
6290d606 AL	155	ARRAY_SIZE(tps65217_uv1_ranges)),
b4bc9ef6 AL	156	TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, tps65217_pmic_ops, 64,
b4bc9ef6 AL	157	TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK,
6290d606 AL	158	TPS65217_ENABLE_DC3_EN, NULL, tps65217_uv1_ranges,
6290d606 AL	159	1), /* DCDC3 voltage range: 900000 ~ 1500000 */
b4bc9ef6 AL	160	TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, tps65217_pmic_ldo1_ops, 16,
b4bc9ef6 AL	161	TPS65217_REG_DEFLDO1, TPS65217_DEFLDO1_LDO1_MASK,
6290d606	162	TPS65217_ENABLE_LDO1_EN, LDO1_VSEL_table, NULL, 0),
b4bc9ef6 AL	163	TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, tps65217_pmic_ops, 64,
b4bc9ef6 AL	164	TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK,
6290d606 AL	165	TPS65217_ENABLE_LDO2_EN, NULL, tps65217_uv1_ranges,
6290d606 AL	166	ARRAY_SIZE(tps65217_uv1_ranges)),
b4bc9ef6 AL	167	TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, tps65217_pmic_ops, 32,
b4bc9ef6 AL	168	TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK,
d172f319	169	TPS65217_ENABLE_LS1_EN \| TPS65217_DEFLDO3_LDO3_EN,
6290d606 AL	170	NULL, tps65217_uv2_ranges,
6290d606 AL	171	ARRAY_SIZE(tps65217_uv2_ranges)),
b4bc9ef6 AL	172	TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, tps65217_pmic_ops, 32,
b4bc9ef6 AL	173	TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK,
d172f319	174	TPS65217_ENABLE_LS2_EN \| TPS65217_DEFLDO4_LDO4_EN,
6290d606 AL	175	NULL, tps65217_uv2_ranges,
6290d606 AL	176	ARRAY_SIZE(tps65217_uv2_ranges)),
a493077f AC	177	};
a493077f AC	178
1922b0f2 AC	179	#ifdef CONFIG_OF
	180	static struct of_regulator_match reg_matches[] = {
	181	{ .name = "dcdc1", .driver_data = (void *)TPS65217_DCDC_1 },
	182	{ .name = "dcdc2", .driver_data = (void *)TPS65217_DCDC_2 },
	183	{ .name = "dcdc3", .driver_data = (void *)TPS65217_DCDC_3 },
	184	{ .name = "ldo1", .driver_data = (void *)TPS65217_LDO_1 },
	185	{ .name = "ldo2", .driver_data = (void *)TPS65217_LDO_2 },
	186	{ .name = "ldo3", .driver_data = (void *)TPS65217_LDO_3 },
	187	{ .name = "ldo4", .driver_data = (void *)TPS65217_LDO_4 },
	188	};
	189
	190	static struct tps65217_board tps65217_parse_dt(struct platform_device pdev)
	191	{
	192	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
	193	struct device_node *node = tps->dev->of_node;
	194	struct tps65217_board *pdata;
	195	struct device_node *regs;
	196	int i, count;
	197
	198	regs = of_find_node_by_name(node, "regulators");
	199	if (!regs)
	200	return NULL;
	201
5bce833c AL	202	count = of_regulator_match(&pdev->dev, regs, reg_matches,
5bce833c AL	203	TPS65217_NUM_REGULATOR);
1922b0f2 AC	204	of_node_put(regs);
	205	if ((count < 0) \|\| (count > TPS65217_NUM_REGULATOR))
	206	return NULL;
	207
	208	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
	209	if (!pdata)
	210	return NULL;
	211
	212	for (i = 0; i < count; i++) {
	213	if (!reg_matches[i].init_data \|\| !reg_matches[i].of_node)
	214	continue;
	215
	216	pdata->tps65217_init_data[i] = reg_matches[i].init_data;
	217	pdata->of_node[i] = reg_matches[i].of_node;
	218	}
	219
	220	return pdata;
	221	}
	222	#else
	223	static struct tps65217_board tps65217_parse_dt(struct platform_device pdev)
	224	{
	225	return NULL;
	226	}
	227	#endif
	228
a5023574	229	static int tps65217_regulator_probe(struct platform_device *pdev)
a493077f	230	{
1922b0f2 AC	231	struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
	232	struct tps65217_board *pdata = dev_get_platdata(tps->dev);
	233	struct regulator_init_data *reg_data;
a493077f	234	struct regulator_dev *rdev;
c172708d	235	struct regulator_config config = { };
1922b0f2	236	int i, ret;
a493077f	237
1922b0f2 AC	238	if (tps->dev->of_node)
1922b0f2 AC	239	pdata = tps65217_parse_dt(pdev);
a493077f	240
1922b0f2 AC	241	if (!pdata) {
	242	dev_err(&pdev->dev, "Platform data not found\n");
	243	return -EINVAL;
	244	}
c172708d	245
1922b0f2 AC	246	if (tps65217_chip_id(tps) != TPS65217) {
	247	dev_err(&pdev->dev, "Invalid tps chip version\n");
	248	return -ENODEV;
	249	}
a493077f	250
1922b0f2	251	platform_set_drvdata(pdev, tps);
a493077f	252
1922b0f2 AC	253	for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {
	254
	255	reg_data = pdata->tps65217_init_data[i];
	256
	257	/*
	258	* Regulator API handles empty constraints but not NULL
	259	* constraints
	260	*/
	261	if (!reg_data)
	262	continue;
	263
	264	/* Register the regulators */
1922b0f2 AC	265	config.dev = tps->dev;
	266	config.init_data = reg_data;
	267	config.driver_data = tps;
	268	config.regmap = tps->regmap;
	269	if (tps->dev->of_node)
	270	config.of_node = pdata->of_node[i];
	271
	272	rdev = regulator_register(&regulators[i], &config);
	273	if (IS_ERR(rdev)) {
	274	dev_err(tps->dev, "failed to register %s regulator\n",
	275	pdev->name);
	276	ret = PTR_ERR(rdev);
	277	goto err_unregister_regulator;
	278	}
	279
	280	/* Save regulator for cleanup */
	281	tps->rdev[i] = rdev;
	282	}
a493077f	283	return 0;
1922b0f2 AC	284
	285	err_unregister_regulator:
	286	while (--i >= 0)
	287	regulator_unregister(tps->rdev[i]);
	288
	289	return ret;
a493077f AC	290	}
a493077f AC	291
8dc995f5	292	static int tps65217_regulator_remove(struct platform_device *pdev)
a493077f	293	{
1922b0f2 AC	294	struct tps65217 *tps = platform_get_drvdata(pdev);
	295	unsigned int i;
	296
	297	for (i = 0; i < TPS65217_NUM_REGULATOR; i++)
	298	regulator_unregister(tps->rdev[i]);
a493077f	299
a493077f AC	300	return 0;
	301	}
	302
	303	static struct platform_driver tps65217_regulator_driver = {
	304	.driver = {
	305	.name = "tps65217-pmic",
	306	},
	307	.probe = tps65217_regulator_probe,
5eb9f2b9	308	.remove = tps65217_regulator_remove,
a493077f AC	309	};
	310
	311	static int __init tps65217_regulator_init(void)
	312	{
	313	return platform_driver_register(&tps65217_regulator_driver);
	314	}
	315	subsys_initcall(tps65217_regulator_init);
	316
	317	static void __exit tps65217_regulator_exit(void)
	318	{
	319	platform_driver_unregister(&tps65217_regulator_driver);
	320	}
	321	module_exit(tps65217_regulator_exit);
	322
a493077f AC	323	MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
	324	MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
	325	MODULE_ALIAS("platform:tps65217-pmic");
	326	MODULE_LICENSE("GPL v2");