[linux-2.6-block.git] / drivers / regulator / as3711-regulator.c

// SPDX-License-Identifier: GPL-2.0
/*
 * AS3711 PMIC regulator driver, using DCDC Step Down and LDO supplies
 *
 * Copyright (C) 2012 Renesas Electronics Corporation
 * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
 */

#include <linux/err.h>
#include <linux/init.h>
#include <linux/mfd/as3711.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>

struct as3711_regulator_info {
	struct regulator_desc	desc;
};

struct as3711_regulator {
	struct as3711_regulator_info *reg_info;
};

/*
 * The regulator API supports 4 modes of operataion: FAST, NORMAL, IDLE and
 * STANDBY. We map them in the following way to AS3711 SD1-4 DCDC modes:
 * FAST:	sdX_fast=1
 * NORMAL:	low_noise=1
 * IDLE:	low_noise=0
 */

static int as3711_set_mode_sd(struct regulator_dev *rdev, unsigned int mode)
{
	unsigned int fast_bit = rdev->desc->enable_mask,
		low_noise_bit = fast_bit << 4;
	u8 val;

	switch (mode) {
	case REGULATOR_MODE_FAST:
		val = fast_bit | low_noise_bit;
		break;
	case REGULATOR_MODE_NORMAL:
		val = low_noise_bit;
		break;
	case REGULATOR_MODE_IDLE:
		val = 0;
		break;
	default:
		return -EINVAL;
	}

	return regmap_update_bits(rdev->regmap, AS3711_SD_CONTROL_1,
				  low_noise_bit | fast_bit, val);
}

static unsigned int as3711_get_mode_sd(struct regulator_dev *rdev)
{
	unsigned int fast_bit = rdev->desc->enable_mask,
		low_noise_bit = fast_bit << 4, mask = fast_bit | low_noise_bit;
	unsigned int val;
	int ret = regmap_read(rdev->regmap, AS3711_SD_CONTROL_1, &val);

	if (ret < 0)
		return ret;

	if ((val & mask) == mask)
		return REGULATOR_MODE_FAST;

	if ((val & mask) == low_noise_bit)
		return REGULATOR_MODE_NORMAL;

	if (!(val & mask))
		return REGULATOR_MODE_IDLE;

	return -EINVAL;
}

static const struct regulator_ops as3711_sd_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.get_mode		= as3711_get_mode_sd,
	.set_mode		= as3711_set_mode_sd,
};

static const struct regulator_ops as3711_aldo_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
};

static const struct regulator_ops as3711_dldo_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
};

static const struct regulator_linear_range as3711_sd_ranges[] = {
	REGULATOR_LINEAR_RANGE(612500, 0x1, 0x40, 12500),
	REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
	REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7f, 50000),
};

static const struct regulator_linear_range as3711_aldo_ranges[] = {
	REGULATOR_LINEAR_RANGE(1200000, 0, 0xf, 50000),
	REGULATOR_LINEAR_RANGE(1800000, 0x10, 0x1f, 100000),
};

static const struct regulator_linear_range as3711_dldo_ranges[] = {
	REGULATOR_LINEAR_RANGE(900000, 0, 0x10, 50000),
	REGULATOR_LINEAR_RANGE(1750000, 0x20, 0x3f, 50000),
};

#define AS3711_REG(_id, _en_reg, _en_bit, _vmask, _sfx)			   \
	[AS3711_REGULATOR_ ## _id] = {					   \
	.desc = {							   \
		.name = "as3711-regulator-" # _id,			   \
		.id = AS3711_REGULATOR_ ## _id,				   \
		.n_voltages = (_vmask + 1),				   \
		.ops = &as3711_ ## _sfx ## _ops,			   \
		.type = REGULATOR_VOLTAGE,				   \
		.owner = THIS_MODULE,					   \
		.vsel_reg = AS3711_ ## _id ## _VOLTAGE,			   \
		.vsel_mask = _vmask,					   \
		.enable_reg = AS3711_ ## _en_reg,			   \
		.enable_mask = BIT(_en_bit),				   \
		.linear_ranges = as3711_ ## _sfx ## _ranges,		   \
		.n_linear_ranges = ARRAY_SIZE(as3711_ ## _sfx ## _ranges), \
	},								   \
}

static struct as3711_regulator_info as3711_reg_info[] = {
	AS3711_REG(SD_1, SD_CONTROL, 0, 0x7f, sd),
	AS3711_REG(SD_2, SD_CONTROL, 1, 0x7f, sd),
	AS3711_REG(SD_3, SD_CONTROL, 2, 0x7f, sd),
	AS3711_REG(SD_4, SD_CONTROL, 3, 0x7f, sd),
	AS3711_REG(LDO_1, LDO_1_VOLTAGE, 7, 0x1f, aldo),
	AS3711_REG(LDO_2, LDO_2_VOLTAGE, 7, 0x1f, aldo),
	AS3711_REG(LDO_3, LDO_3_VOLTAGE, 7, 0x3f, dldo),
	AS3711_REG(LDO_4, LDO_4_VOLTAGE, 7, 0x3f, dldo),
	AS3711_REG(LDO_5, LDO_5_VOLTAGE, 7, 0x3f, dldo),
	AS3711_REG(LDO_6, LDO_6_VOLTAGE, 7, 0x3f, dldo),
	AS3711_REG(LDO_7, LDO_7_VOLTAGE, 7, 0x3f, dldo),
	AS3711_REG(LDO_8, LDO_8_VOLTAGE, 7, 0x3f, dldo),
	/* StepUp output voltage depends on supplying regulator */
};

#define AS3711_REGULATOR_NUM ARRAY_SIZE(as3711_reg_info)

static struct of_regulator_match
as3711_regulator_matches[AS3711_REGULATOR_NUM] = {
	[AS3711_REGULATOR_SD_1] = { .name = "sd1" },
	[AS3711_REGULATOR_SD_2] = { .name = "sd2" },
	[AS3711_REGULATOR_SD_3] = { .name = "sd3" },
	[AS3711_REGULATOR_SD_4] = { .name = "sd4" },
	[AS3711_REGULATOR_LDO_1] = { .name = "ldo1" },
	[AS3711_REGULATOR_LDO_2] = { .name = "ldo2" },
	[AS3711_REGULATOR_LDO_3] = { .name = "ldo3" },
	[AS3711_REGULATOR_LDO_4] = { .name = "ldo4" },
	[AS3711_REGULATOR_LDO_5] = { .name = "ldo5" },
	[AS3711_REGULATOR_LDO_6] = { .name = "ldo6" },
	[AS3711_REGULATOR_LDO_7] = { .name = "ldo7" },
	[AS3711_REGULATOR_LDO_8] = { .name = "ldo8" },
};

static int as3711_regulator_parse_dt(struct device *dev,
				struct device_node **of_node, const int count)
{
	struct as3711_regulator_pdata *pdata = dev_get_platdata(dev);
	struct device_node *regulators =
		of_get_child_by_name(dev->parent->of_node, "regulators");
	struct of_regulator_match *match;
	int ret, i;

	if (!regulators) {
		dev_err(dev, "regulator node not found\n");
		return -ENODEV;
	}

	ret = of_regulator_match(dev->parent, regulators,
				 as3711_regulator_matches, count);
	of_node_put(regulators);
	if (ret < 0) {
		dev_err(dev, "Error parsing regulator init data: %d\n", ret);
		return ret;
	}

	for (i = 0, match = as3711_regulator_matches; i < count; i++, match++)
		if (match->of_node) {
			pdata->init_data[i] = match->init_data;
			of_node[i] = match->of_node;
		}

	return 0;
}

static int as3711_regulator_probe(struct platform_device *pdev)
{
	struct as3711_regulator_pdata *pdata = dev_get_platdata(&pdev->dev);
	struct as3711 *as3711 = dev_get_drvdata(pdev->dev.parent);
	struct regulator_config config = {.dev = &pdev->dev,};
	struct as3711_regulator *reg = NULL;
	struct as3711_regulator *regs;
	struct device_node *of_node[AS3711_REGULATOR_NUM] = {};
	struct regulator_dev *rdev;
	struct as3711_regulator_info *ri;
	int ret;
	int id;

	if (!pdata) {
		dev_err(&pdev->dev, "No platform data...\n");
		return -ENODEV;
	}

	if (pdev->dev.parent->of_node) {
		ret = as3711_regulator_parse_dt(&pdev->dev, of_node, AS3711_REGULATOR_NUM);
		if (ret < 0) {
			dev_err(&pdev->dev, "DT parsing failed: %d\n", ret);
			return ret;
		}
	}

	regs = devm_kcalloc(&pdev->dev,
			    AS3711_REGULATOR_NUM,
			    sizeof(struct as3711_regulator),
			    GFP_KERNEL);
	if (!regs)
		return -ENOMEM;

	for (id = 0, ri = as3711_reg_info; id < AS3711_REGULATOR_NUM; ++id, ri++) {
		reg = &regs[id];
		reg->reg_info = ri;

		config.init_data = pdata->init_data[id];
		config.driver_data = reg;
		config.regmap = as3711->regmap;
		config.of_node = of_node[id];

		rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register regulator %s\n",
				ri->desc.name);
			return PTR_ERR(rdev);
		}
	}
	platform_set_drvdata(pdev, regs);
	return 0;
}

static struct platform_driver as3711_regulator_driver = {
	.driver	= {
		.name	= "as3711-regulator",
	},
	.probe		= as3711_regulator_probe,
};

static int __init as3711_regulator_init(void)
{
	return platform_driver_register(&as3711_regulator_driver);
}
subsys_initcall(as3711_regulator_init);

static void __exit as3711_regulator_exit(void)
{
	platform_driver_unregister(&as3711_regulator_driver);
}
module_exit(as3711_regulator_exit);

MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_DESCRIPTION("AS3711 regulator driver");
MODULE_ALIAS("platform:as3711-regulator");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
ef4de050	1	// SPDX-License-Identifier: GPL-2.0
f1e64f90 GL	2	/*
	3	* AS3711 PMIC regulator driver, using DCDC Step Down and LDO supplies
	4	*
	5	* Copyright (C) 2012 Renesas Electronics Corporation
	6	* Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
f1e64f90 GL	7	*/
	8
	9	#include <linux/err.h>
	10	#include <linux/init.h>
	11	#include <linux/mfd/as3711.h>
	12	#include <linux/module.h>
416d6759	13	#include <linux/of.h>
f1e64f90 GL	14	#include <linux/platform_device.h>
	15	#include <linux/regmap.h>
	16	#include <linux/regulator/driver.h>
416d6759	17	#include <linux/regulator/of_regulator.h>
f1e64f90 GL	18	#include <linux/slab.h>
	19
	20	struct as3711_regulator_info {
	21	struct regulator_desc desc;
f1e64f90 GL	22	};
	23
	24	struct as3711_regulator {
	25	struct as3711_regulator_info *reg_info;
f1e64f90 GL	26	};
f1e64f90 GL	27
f1e64f90 GL	28	/*
	29	* The regulator API supports 4 modes of operataion: FAST, NORMAL, IDLE and
	30	* STANDBY. We map them in the following way to AS3711 SD1-4 DCDC modes:
	31	* FAST: sdX_fast=1
	32	* NORMAL: low_noise=1
	33	* IDLE: low_noise=0
	34	*/
	35
	36	static int as3711_set_mode_sd(struct regulator_dev *rdev, unsigned int mode)
	37	{
	38	unsigned int fast_bit = rdev->desc->enable_mask,
	39	low_noise_bit = fast_bit << 4;
	40	u8 val;
	41
	42	switch (mode) {
	43	case REGULATOR_MODE_FAST:
	44	val = fast_bit \| low_noise_bit;
	45	break;
	46	case REGULATOR_MODE_NORMAL:
	47	val = low_noise_bit;
	48	break;
	49	case REGULATOR_MODE_IDLE:
	50	val = 0;
	51	break;
	52	default:
	53	return -EINVAL;
	54	}
	55
	56	return regmap_update_bits(rdev->regmap, AS3711_SD_CONTROL_1,
	57	low_noise_bit \| fast_bit, val);
	58	}
	59
	60	static unsigned int as3711_get_mode_sd(struct regulator_dev *rdev)
	61	{
	62	unsigned int fast_bit = rdev->desc->enable_mask,
	63	low_noise_bit = fast_bit << 4, mask = fast_bit \| low_noise_bit;
	64	unsigned int val;
	65	int ret = regmap_read(rdev->regmap, AS3711_SD_CONTROL_1, &val);
	66
	67	if (ret < 0)
	68	return ret;
	69
	70	if ((val & mask) == mask)
	71	return REGULATOR_MODE_FAST;
	72
	73	if ((val & mask) == low_noise_bit)
	74	return REGULATOR_MODE_NORMAL;
	75
	76	if (!(val & mask))
	77	return REGULATOR_MODE_IDLE;
	78
	79	return -EINVAL;
	80	}
	81
1bacf463	82	static const struct regulator_ops as3711_sd_ops = {
f1e64f90 GL	83	.is_enabled = regulator_is_enabled_regmap,
	84	.enable = regulator_enable_regmap,
	85	.disable = regulator_disable_regmap,
	86	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	87	.set_voltage_sel = regulator_set_voltage_sel_regmap,
9234c636 AL	88	.list_voltage = regulator_list_voltage_linear_range,
9234c636 AL	89	.map_voltage = regulator_map_voltage_linear_range,
f1e64f90 GL	90	.get_mode = as3711_get_mode_sd,
	91	.set_mode = as3711_set_mode_sd,
	92	};
	93
1bacf463	94	static const struct regulator_ops as3711_aldo_ops = {
f1e64f90 GL	95	.is_enabled = regulator_is_enabled_regmap,
	96	.enable = regulator_enable_regmap,
	97	.disable = regulator_disable_regmap,
	98	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	99	.set_voltage_sel = regulator_set_voltage_sel_regmap,
9234c636 AL	100	.list_voltage = regulator_list_voltage_linear_range,
9234c636 AL	101	.map_voltage = regulator_map_voltage_linear_range,
f1e64f90 GL	102	};
f1e64f90 GL	103
1bacf463	104	static const struct regulator_ops as3711_dldo_ops = {
f1e64f90 GL	105	.is_enabled = regulator_is_enabled_regmap,
	106	.enable = regulator_enable_regmap,
	107	.disable = regulator_disable_regmap,
	108	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	109	.set_voltage_sel = regulator_set_voltage_sel_regmap,
9234c636 AL	110	.list_voltage = regulator_list_voltage_linear_range,
	111	.map_voltage = regulator_map_voltage_linear_range,
	112	};
	113
	114	static const struct regulator_linear_range as3711_sd_ranges[] = {
8828bae4 AL	115	REGULATOR_LINEAR_RANGE(612500, 0x1, 0x40, 12500),
	116	REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
	117	REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7f, 50000),
9234c636 AL	118	};
	119
	120	static const struct regulator_linear_range as3711_aldo_ranges[] = {
8828bae4 AL	121	REGULATOR_LINEAR_RANGE(1200000, 0, 0xf, 50000),
8828bae4 AL	122	REGULATOR_LINEAR_RANGE(1800000, 0x10, 0x1f, 100000),
9234c636 AL	123	};
	124
	125	static const struct regulator_linear_range as3711_dldo_ranges[] = {
8828bae4 AL	126	REGULATOR_LINEAR_RANGE(900000, 0, 0x10, 50000),
8828bae4 AL	127	REGULATOR_LINEAR_RANGE(1750000, 0x20, 0x3f, 50000),
f1e64f90 GL	128	};
f1e64f90 GL	129
192264e0 AL	130	#define AS3711_REG(_id, _en_reg, _en_bit, _vmask, _sfx) \
	131	[AS3711_REGULATOR_ ## _id] = { \
	132	.desc = { \
	133	.name = "as3711-regulator-" # _id, \
	134	.id = AS3711_REGULATOR_ ## _id, \
	135	.n_voltages = (_vmask + 1), \
	136	.ops = &as3711_ ## _sfx ## _ops, \
	137	.type = REGULATOR_VOLTAGE, \
	138	.owner = THIS_MODULE, \
	139	.vsel_reg = AS3711_ ## _id ## _VOLTAGE, \
	140	.vsel_mask = _vmask, \
	141	.enable_reg = AS3711_ ## _en_reg, \
	142	.enable_mask = BIT(_en_bit), \
	143	.linear_ranges = as3711_ ## _sfx ## _ranges, \
	144	.n_linear_ranges = ARRAY_SIZE(as3711_ ## _sfx ## _ranges), \
	145	}, \
f1e64f90 GL	146	}
	147
	148	static struct as3711_regulator_info as3711_reg_info[] = {
192264e0 AL	149	AS3711_REG(SD_1, SD_CONTROL, 0, 0x7f, sd),
	150	AS3711_REG(SD_2, SD_CONTROL, 1, 0x7f, sd),
	151	AS3711_REG(SD_3, SD_CONTROL, 2, 0x7f, sd),
	152	AS3711_REG(SD_4, SD_CONTROL, 3, 0x7f, sd),
	153	AS3711_REG(LDO_1, LDO_1_VOLTAGE, 7, 0x1f, aldo),
	154	AS3711_REG(LDO_2, LDO_2_VOLTAGE, 7, 0x1f, aldo),
	155	AS3711_REG(LDO_3, LDO_3_VOLTAGE, 7, 0x3f, dldo),
	156	AS3711_REG(LDO_4, LDO_4_VOLTAGE, 7, 0x3f, dldo),
	157	AS3711_REG(LDO_5, LDO_5_VOLTAGE, 7, 0x3f, dldo),
	158	AS3711_REG(LDO_6, LDO_6_VOLTAGE, 7, 0x3f, dldo),
	159	AS3711_REG(LDO_7, LDO_7_VOLTAGE, 7, 0x3f, dldo),
	160	AS3711_REG(LDO_8, LDO_8_VOLTAGE, 7, 0x3f, dldo),
f1e64f90 GL	161	/* StepUp output voltage depends on supplying regulator */
	162	};
	163
	164	#define AS3711_REGULATOR_NUM ARRAY_SIZE(as3711_reg_info)
	165
d6c7d731 AL	166	static struct of_regulator_match
	167	as3711_regulator_matches[AS3711_REGULATOR_NUM] = {
	168	[AS3711_REGULATOR_SD_1] = { .name = "sd1" },
	169	[AS3711_REGULATOR_SD_2] = { .name = "sd2" },
	170	[AS3711_REGULATOR_SD_3] = { .name = "sd3" },
	171	[AS3711_REGULATOR_SD_4] = { .name = "sd4" },
	172	[AS3711_REGULATOR_LDO_1] = { .name = "ldo1" },
	173	[AS3711_REGULATOR_LDO_2] = { .name = "ldo2" },
	174	[AS3711_REGULATOR_LDO_3] = { .name = "ldo3" },
	175	[AS3711_REGULATOR_LDO_4] = { .name = "ldo4" },
	176	[AS3711_REGULATOR_LDO_5] = { .name = "ldo5" },
	177	[AS3711_REGULATOR_LDO_6] = { .name = "ldo6" },
	178	[AS3711_REGULATOR_LDO_7] = { .name = "ldo7" },
	179	[AS3711_REGULATOR_LDO_8] = { .name = "ldo8" },
416d6759 GL	180	};
	181
	182	static int as3711_regulator_parse_dt(struct device *dev,
	183	struct device_node **of_node, const int count)
	184	{
	185	struct as3711_regulator_pdata *pdata = dev_get_platdata(dev);
	186	struct device_node *regulators =
eecb02c0	187	of_get_child_by_name(dev->parent->of_node, "regulators");
d6c7d731	188	struct of_regulator_match *match;
416d6759 GL	189	int ret, i;
	190
	191	if (!regulators) {
	192	dev_err(dev, "regulator node not found\n");
	193	return -ENODEV;
	194	}
	195
d6c7d731 AL	196	ret = of_regulator_match(dev->parent, regulators,
d6c7d731 AL	197	as3711_regulator_matches, count);
416d6759 GL	198	of_node_put(regulators);
	199	if (ret < 0) {
	200	dev_err(dev, "Error parsing regulator init data: %d\n", ret);
	201	return ret;
	202	}
	203
d6c7d731	204	for (i = 0, match = as3711_regulator_matches; i < count; i++, match++)
416d6759 GL	205	if (match->of_node) {
	206	pdata->init_data[i] = match->init_data;
	207	of_node[i] = match->of_node;
	208	}
	209
	210	return 0;
	211	}
	212
f1e64f90 GL	213	static int as3711_regulator_probe(struct platform_device *pdev)
	214	{
	215	struct as3711_regulator_pdata *pdata = dev_get_platdata(&pdev->dev);
	216	struct as3711 *as3711 = dev_get_drvdata(pdev->dev.parent);
f1e64f90 GL	217	struct regulator_config config = {.dev = &pdev->dev,};
	218	struct as3711_regulator *reg = NULL;
	219	struct as3711_regulator *regs;
416d6759	220	struct device_node *of_node[AS3711_REGULATOR_NUM] = {};
f1e64f90 GL	221	struct regulator_dev *rdev;
	222	struct as3711_regulator_info *ri;
	223	int ret;
	224	int id;
	225
416d6759 GL	226	if (!pdata) {
	227	dev_err(&pdev->dev, "No platform data...\n");
	228	return -ENODEV;
	229	}
	230
	231	if (pdev->dev.parent->of_node) {
	232	ret = as3711_regulator_parse_dt(&pdev->dev, of_node, AS3711_REGULATOR_NUM);
	233	if (ret < 0) {
	234	dev_err(&pdev->dev, "DT parsing failed: %d\n", ret);
	235	return ret;
	236	}
	237	}
f1e64f90	238
a86854d0 KC	239	regs = devm_kcalloc(&pdev->dev,
	240	AS3711_REGULATOR_NUM,
	241	sizeof(struct as3711_regulator),
	242	GFP_KERNEL);
31833581	243	if (!regs)
f1e64f90	244	return -ENOMEM;
f1e64f90 GL	245
f1e64f90 GL	246	for (id = 0, ri = as3711_reg_info; id < AS3711_REGULATOR_NUM; ++id, ri++) {
f1e64f90 GL	247	reg = &regs[id];
	248	reg->reg_info = ri;
	249
f7e9e52f	250	config.init_data = pdata->init_data[id];
f1e64f90 GL	251	config.driver_data = reg;
f1e64f90 GL	252	config.regmap = as3711->regmap;
416d6759	253	config.of_node = of_node[id];
f1e64f90	254
27447c93	255	rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
f1e64f90 GL	256	if (IS_ERR(rdev)) {
	257	dev_err(&pdev->dev, "Failed to register regulator %s\n",
	258	ri->desc.name);
27447c93	259	return PTR_ERR(rdev);
f1e64f90	260	}
f1e64f90 GL	261	}
	262	platform_set_drvdata(pdev, regs);
	263	return 0;
f1e64f90 GL	264	}
	265
	266	static struct platform_driver as3711_regulator_driver = {
	267	.driver = {
	268	.name = "as3711-regulator",
f1e64f90 GL	269	},
f1e64f90 GL	270	.probe = as3711_regulator_probe,
f1e64f90 GL	271	};
	272
	273	static int __init as3711_regulator_init(void)
	274	{
	275	return platform_driver_register(&as3711_regulator_driver);
	276	}
	277	subsys_initcall(as3711_regulator_init);
	278
	279	static void __exit as3711_regulator_exit(void)
	280	{
	281	platform_driver_unregister(&as3711_regulator_driver);
	282	}
	283	module_exit(as3711_regulator_exit);
	284
	285	MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
	286	MODULE_DESCRIPTION("AS3711 regulator driver");
	287	MODULE_ALIAS("platform:as3711-regulator");
	288	MODULE_LICENSE("GPL v2");