[mirror_ubuntu-bionic-kernel.git] / drivers / regulator / wm8400-regulator.c

/*
 * Regulator support for WM8400
 *
 * Copyright 2008 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.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; either version 2 of the
 * License, or (at your option) any later version.
 *
 */

#include <linux/bug.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/regulator/driver.h>
#include <linux/mfd/wm8400-private.h>

static const struct regulator_linear_range wm8400_ldo_ranges[] = {
	{ .min_uV =  900000, .max_uV = 1600000, .min_sel = 0, .max_sel = 14,
	  .uV_step =  50000 },
	{ .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31,
	  .uV_step = 100000 },
};

static struct regulator_ops wm8400_ldo_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.map_voltage = regulator_map_voltage_linear_range,
};

static unsigned int wm8400_dcdc_get_mode(struct regulator_dev *dev)
{
	struct wm8400 *wm8400 = rdev_get_drvdata(dev);
	int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
	u16 data[2];
	int ret;

	ret = wm8400_block_read(wm8400, WM8400_DCDC1_CONTROL_1 + offset, 2,
				data);
	if (ret != 0)
		return 0;

	/* Datasheet: hibernate */
	if (data[0] & WM8400_DC1_SLEEP)
		return REGULATOR_MODE_STANDBY;

	/* Datasheet: standby */
	if (!(data[0] & WM8400_DC1_ACTIVE))
		return REGULATOR_MODE_IDLE;

	/* Datasheet: active with or without force PWM */
	if (data[1] & WM8400_DC1_FRC_PWM)
		return REGULATOR_MODE_FAST;
	else
		return REGULATOR_MODE_NORMAL;
}

static int wm8400_dcdc_set_mode(struct regulator_dev *dev, unsigned int mode)
{
	struct wm8400 *wm8400 = rdev_get_drvdata(dev);
	int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
	int ret;

	switch (mode) {
	case REGULATOR_MODE_FAST:
		/* Datasheet: active with force PWM */
		ret = wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_2 + offset,
				      WM8400_DC1_FRC_PWM, WM8400_DC1_FRC_PWM);
		if (ret != 0)
			return ret;

		return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
				       WM8400_DC1_ACTIVE | WM8400_DC1_SLEEP,
				       WM8400_DC1_ACTIVE);

	case REGULATOR_MODE_NORMAL:
		/* Datasheet: active */
		ret = wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_2 + offset,
				      WM8400_DC1_FRC_PWM, 0);
		if (ret != 0)
			return ret;

		return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
				       WM8400_DC1_ACTIVE | WM8400_DC1_SLEEP,
				       WM8400_DC1_ACTIVE);

	case REGULATOR_MODE_IDLE:
		/* Datasheet: standby */
		return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
				       WM8400_DC1_ACTIVE | WM8400_DC1_SLEEP, 0);
	default:
		return -EINVAL;
	}
}

static unsigned int wm8400_dcdc_get_optimum_mode(struct regulator_dev *dev,
						 int input_uV, int output_uV,
						 int load_uA)
{
	return REGULATOR_MODE_NORMAL;
}

static struct regulator_ops wm8400_dcdc_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_mode = wm8400_dcdc_get_mode,
	.set_mode = wm8400_dcdc_set_mode,
	.get_optimum_mode = wm8400_dcdc_get_optimum_mode,
};

static struct regulator_desc regulators[] = {
	{
		.name = "LDO1",
		.id = WM8400_LDO1,
		.ops = &wm8400_ldo_ops,
		.enable_reg = WM8400_LDO1_CONTROL,
		.enable_mask = WM8400_LDO1_ENA,
		.n_voltages = WM8400_LDO1_VSEL_MASK + 1,
		.linear_ranges = wm8400_ldo_ranges,
		.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
		.vsel_reg = WM8400_LDO1_CONTROL,
		.vsel_mask = WM8400_LDO1_VSEL_MASK,
		.type = REGULATOR_VOLTAGE,
		.owner = THIS_MODULE,
	},
	{
		.name = "LDO2",
		.id = WM8400_LDO2,
		.ops = &wm8400_ldo_ops,
		.enable_reg = WM8400_LDO2_CONTROL,
		.enable_mask = WM8400_LDO2_ENA,
		.n_voltages = WM8400_LDO2_VSEL_MASK + 1,
		.linear_ranges = wm8400_ldo_ranges,
		.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
		.type = REGULATOR_VOLTAGE,
		.vsel_reg = WM8400_LDO2_CONTROL,
		.vsel_mask = WM8400_LDO2_VSEL_MASK,
		.owner = THIS_MODULE,
	},
	{
		.name = "LDO3",
		.id = WM8400_LDO3,
		.ops = &wm8400_ldo_ops,
		.enable_reg = WM8400_LDO3_CONTROL,
		.enable_mask = WM8400_LDO3_ENA,
		.n_voltages = WM8400_LDO3_VSEL_MASK + 1,
		.linear_ranges = wm8400_ldo_ranges,
		.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
		.vsel_reg = WM8400_LDO3_CONTROL,
		.vsel_mask = WM8400_LDO3_VSEL_MASK,
		.type = REGULATOR_VOLTAGE,
		.owner = THIS_MODULE,
	},
	{
		.name = "LDO4",
		.id = WM8400_LDO4,
		.ops = &wm8400_ldo_ops,
		.enable_reg = WM8400_LDO4_CONTROL,
		.enable_mask = WM8400_LDO4_ENA,
		.n_voltages = WM8400_LDO4_VSEL_MASK + 1,
		.linear_ranges = wm8400_ldo_ranges,
		.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
		.vsel_reg = WM8400_LDO4_CONTROL,
		.vsel_mask = WM8400_LDO4_VSEL_MASK,
		.type = REGULATOR_VOLTAGE,
		.owner = THIS_MODULE,
	},
	{
		.name = "DCDC1",
		.id = WM8400_DCDC1,
		.ops = &wm8400_dcdc_ops,
		.enable_reg = WM8400_DCDC1_CONTROL_1,
		.enable_mask = WM8400_DC1_ENA_MASK,
		.n_voltages = WM8400_DC1_VSEL_MASK + 1,
		.vsel_reg = WM8400_DCDC1_CONTROL_1,
		.vsel_mask = WM8400_DC1_VSEL_MASK,
		.min_uV = 850000,
		.uV_step = 25000,
		.type = REGULATOR_VOLTAGE,
		.owner = THIS_MODULE,
	},
	{
		.name = "DCDC2",
		.id = WM8400_DCDC2,
		.ops = &wm8400_dcdc_ops,
		.enable_reg = WM8400_DCDC2_CONTROL_1,
		.enable_mask = WM8400_DC1_ENA_MASK,
		.n_voltages = WM8400_DC2_VSEL_MASK + 1,
		.vsel_reg = WM8400_DCDC2_CONTROL_1,
		.vsel_mask = WM8400_DC2_VSEL_MASK,
		.min_uV = 850000,
		.uV_step = 25000,
		.type = REGULATOR_VOLTAGE,
		.owner = THIS_MODULE,
	},
};

static int wm8400_regulator_probe(struct platform_device *pdev)
{
	struct wm8400 *wm8400 = container_of(pdev, struct wm8400, regulators[pdev->id]);
	struct regulator_config config = { };
	struct regulator_dev *rdev;

	config.dev = &pdev->dev;
	config.init_data = pdev->dev.platform_data;
	config.driver_data = wm8400;
	config.regmap = wm8400->regmap;

	rdev = regulator_register(&regulators[pdev->id], &config);
	if (IS_ERR(rdev))
		return PTR_ERR(rdev);

	platform_set_drvdata(pdev, rdev);

	return 0;
}

static int wm8400_regulator_remove(struct platform_device *pdev)
{
	struct regulator_dev *rdev = platform_get_drvdata(pdev);

	regulator_unregister(rdev);

	return 0;
}

static struct platform_driver wm8400_regulator_driver = {
	.driver = {
		.name = "wm8400-regulator",
	},
	.probe = wm8400_regulator_probe,
	.remove = wm8400_regulator_remove,
};

/**
 * wm8400_register_regulator - enable software control of a WM8400 regulator
 *
 * This function enables software control of a WM8400 regulator via
 * the regulator API.  It is intended to be called from the
 * platform_init() callback of the WM8400 MFD driver.
 *
 * @param dev      The WM8400 device to operate on.
 * @param reg      The regulator to control.
 * @param initdata Regulator initdata for the regulator.
 */
int wm8400_register_regulator(struct device *dev, int reg,
			      struct regulator_init_data *initdata)
{
	struct wm8400 *wm8400 = dev_get_drvdata(dev);

	if (wm8400->regulators[reg].name)
		return -EBUSY;

	initdata->driver_data = wm8400;

	wm8400->regulators[reg].name = "wm8400-regulator";
	wm8400->regulators[reg].id = reg;
	wm8400->regulators[reg].dev.parent = dev;
	wm8400->regulators[reg].dev.platform_data = initdata;

	return platform_device_register(&wm8400->regulators[reg]);
}
EXPORT_SYMBOL_GPL(wm8400_register_regulator);

static int __init wm8400_regulator_init(void)
{
	return platform_driver_register(&wm8400_regulator_driver);
}
subsys_initcall(wm8400_regulator_init);

static void __exit wm8400_regulator_exit(void)
{
	platform_driver_unregister(&wm8400_regulator_driver);
}
module_exit(wm8400_regulator_exit);

MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("WM8400 regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:wm8400-regulator");
Commit	Line	Data
42fad570 MB	1	/*
	2	* Regulator support for WM8400
	3	*
	4	* Copyright 2008 Wolfson Microelectronics PLC.
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.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; either version 2 of the
	11	* License, or (at your option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/bug.h>
	16	#include <linux/err.h>
	17	#include <linux/kernel.h>
65602c32	18	#include <linux/module.h>
42fad570 MB	19	#include <linux/regulator/driver.h>
	20	#include <linux/mfd/wm8400-private.h>
	21
6692e432 MB	22	static const struct regulator_linear_range wm8400_ldo_ranges[] = {
	23	{ .min_uV = 900000, .max_uV = 1600000, .min_sel = 0, .max_sel = 14,
	24	.uV_step = 50000 },
	25	{ .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31,
	26	.uV_step = 100000 },
	27	};
42fad570 MB	28
42fad570 MB	29	static struct regulator_ops wm8400_ldo_ops = {
c54a155d MB	30	.is_enabled = regulator_is_enabled_regmap,
	31	.enable = regulator_enable_regmap,
	32	.disable = regulator_disable_regmap,
6692e432	33	.list_voltage = regulator_list_voltage_linear_range,
c54a155d MB	34	.get_voltage_sel = regulator_get_voltage_sel_regmap,
c54a155d MB	35	.set_voltage_sel = regulator_set_voltage_sel_regmap,
6692e432	36	.map_voltage = regulator_map_voltage_linear_range,
42fad570 MB	37	};
42fad570 MB	38
42fad570 MB	39	static unsigned int wm8400_dcdc_get_mode(struct regulator_dev *dev)
	40	{
	41	struct wm8400 *wm8400 = rdev_get_drvdata(dev);
	42	int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
	43	u16 data[2];
	44	int ret;
	45
	46	ret = wm8400_block_read(wm8400, WM8400_DCDC1_CONTROL_1 + offset, 2,
	47	data);
	48	if (ret != 0)
	49	return 0;
	50
	51	/* Datasheet: hibernate */
	52	if (data[0] & WM8400_DC1_SLEEP)
	53	return REGULATOR_MODE_STANDBY;
	54
	55	/* Datasheet: standby */
	56	if (!(data[0] & WM8400_DC1_ACTIVE))
	57	return REGULATOR_MODE_IDLE;
	58
	59	/* Datasheet: active with or without force PWM */
	60	if (data[1] & WM8400_DC1_FRC_PWM)
	61	return REGULATOR_MODE_FAST;
	62	else
	63	return REGULATOR_MODE_NORMAL;
	64	}
	65
	66	static int wm8400_dcdc_set_mode(struct regulator_dev *dev, unsigned int mode)
	67	{
	68	struct wm8400 *wm8400 = rdev_get_drvdata(dev);
	69	int offset = (rdev_get_id(dev) - WM8400_DCDC1) * 2;
	70	int ret;
	71
	72	switch (mode) {
	73	case REGULATOR_MODE_FAST:
	74	/* Datasheet: active with force PWM */
	75	ret = wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_2 + offset,
	76	WM8400_DC1_FRC_PWM, WM8400_DC1_FRC_PWM);
	77	if (ret != 0)
	78	return ret;
	79
	80	return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
	81	WM8400_DC1_ACTIVE \| WM8400_DC1_SLEEP,
	82	WM8400_DC1_ACTIVE);
	83
	84	case REGULATOR_MODE_NORMAL:
	85	/* Datasheet: active */
	86	ret = wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_2 + offset,
	87	WM8400_DC1_FRC_PWM, 0);
	88	if (ret != 0)
	89	return ret;
	90
	91	return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
	92	WM8400_DC1_ACTIVE \| WM8400_DC1_SLEEP,
	93	WM8400_DC1_ACTIVE);
	94
	95	case REGULATOR_MODE_IDLE:
	96	/* Datasheet: standby */
42fad570	97	return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
4001376e	98	WM8400_DC1_ACTIVE \| WM8400_DC1_SLEEP, 0);
42fad570 MB	99	default:
	100	return -EINVAL;
	101	}
	102	}
	103
	104	static unsigned int wm8400_dcdc_get_optimum_mode(struct regulator_dev *dev,
	105	int input_uV, int output_uV,
	106	int load_uA)
	107	{
	108	return REGULATOR_MODE_NORMAL;
	109	}
	110
	111	static struct regulator_ops wm8400_dcdc_ops = {
c54a155d MB	112	.is_enabled = regulator_is_enabled_regmap,
	113	.enable = regulator_enable_regmap,
	114	.disable = regulator_disable_regmap,
	115	.list_voltage = regulator_list_voltage_linear,
27eeabb7	116	.map_voltage = regulator_map_voltage_linear,
c54a155d MB	117	.get_voltage_sel = regulator_get_voltage_sel_regmap,
c54a155d MB	118	.set_voltage_sel = regulator_set_voltage_sel_regmap,
42fad570 MB	119	.get_mode = wm8400_dcdc_get_mode,
	120	.set_mode = wm8400_dcdc_set_mode,
	121	.get_optimum_mode = wm8400_dcdc_get_optimum_mode,
	122	};
	123
	124	static struct regulator_desc regulators[] = {
	125	{
	126	.name = "LDO1",
	127	.id = WM8400_LDO1,
	128	.ops = &wm8400_ldo_ops,
c54a155d MB	129	.enable_reg = WM8400_LDO1_CONTROL,
c54a155d MB	130	.enable_mask = WM8400_LDO1_ENA,
216765d9	131	.n_voltages = WM8400_LDO1_VSEL_MASK + 1,
6692e432 MB	132	.linear_ranges = wm8400_ldo_ranges,
6692e432 MB	133	.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
c54a155d MB	134	.vsel_reg = WM8400_LDO1_CONTROL,
c54a155d MB	135	.vsel_mask = WM8400_LDO1_VSEL_MASK,
42fad570 MB	136	.type = REGULATOR_VOLTAGE,
	137	.owner = THIS_MODULE,
	138	},
	139	{
	140	.name = "LDO2",
	141	.id = WM8400_LDO2,
	142	.ops = &wm8400_ldo_ops,
c54a155d MB	143	.enable_reg = WM8400_LDO2_CONTROL,
c54a155d MB	144	.enable_mask = WM8400_LDO2_ENA,
216765d9	145	.n_voltages = WM8400_LDO2_VSEL_MASK + 1,
6692e432 MB	146	.linear_ranges = wm8400_ldo_ranges,
6692e432 MB	147	.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
42fad570	148	.type = REGULATOR_VOLTAGE,
c54a155d MB	149	.vsel_reg = WM8400_LDO2_CONTROL,
c54a155d MB	150	.vsel_mask = WM8400_LDO2_VSEL_MASK,
42fad570 MB	151	.owner = THIS_MODULE,
	152	},
	153	{
	154	.name = "LDO3",
	155	.id = WM8400_LDO3,
	156	.ops = &wm8400_ldo_ops,
c54a155d MB	157	.enable_reg = WM8400_LDO3_CONTROL,
c54a155d MB	158	.enable_mask = WM8400_LDO3_ENA,
216765d9	159	.n_voltages = WM8400_LDO3_VSEL_MASK + 1,
6692e432 MB	160	.linear_ranges = wm8400_ldo_ranges,
6692e432 MB	161	.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
c54a155d MB	162	.vsel_reg = WM8400_LDO3_CONTROL,
c54a155d MB	163	.vsel_mask = WM8400_LDO3_VSEL_MASK,
42fad570 MB	164	.type = REGULATOR_VOLTAGE,
	165	.owner = THIS_MODULE,
	166	},
	167	{
	168	.name = "LDO4",
	169	.id = WM8400_LDO4,
	170	.ops = &wm8400_ldo_ops,
c54a155d MB	171	.enable_reg = WM8400_LDO4_CONTROL,
c54a155d MB	172	.enable_mask = WM8400_LDO4_ENA,
216765d9	173	.n_voltages = WM8400_LDO4_VSEL_MASK + 1,
6692e432 MB	174	.linear_ranges = wm8400_ldo_ranges,
6692e432 MB	175	.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
c54a155d MB	176	.vsel_reg = WM8400_LDO4_CONTROL,
c54a155d MB	177	.vsel_mask = WM8400_LDO4_VSEL_MASK,
42fad570 MB	178	.type = REGULATOR_VOLTAGE,
	179	.owner = THIS_MODULE,
	180	},
	181	{
	182	.name = "DCDC1",
	183	.id = WM8400_DCDC1,
	184	.ops = &wm8400_dcdc_ops,
c54a155d MB	185	.enable_reg = WM8400_DCDC1_CONTROL_1,
c54a155d MB	186	.enable_mask = WM8400_DC1_ENA_MASK,
216765d9	187	.n_voltages = WM8400_DC1_VSEL_MASK + 1,
c54a155d MB	188	.vsel_reg = WM8400_DCDC1_CONTROL_1,
	189	.vsel_mask = WM8400_DC1_VSEL_MASK,
	190	.min_uV = 850000,
	191	.uV_step = 25000,
42fad570 MB	192	.type = REGULATOR_VOLTAGE,
	193	.owner = THIS_MODULE,
	194	},
	195	{
	196	.name = "DCDC2",
	197	.id = WM8400_DCDC2,
	198	.ops = &wm8400_dcdc_ops,
c54a155d MB	199	.enable_reg = WM8400_DCDC2_CONTROL_1,
c54a155d MB	200	.enable_mask = WM8400_DC1_ENA_MASK,
216765d9	201	.n_voltages = WM8400_DC2_VSEL_MASK + 1,
c54a155d MB	202	.vsel_reg = WM8400_DCDC2_CONTROL_1,
	203	.vsel_mask = WM8400_DC2_VSEL_MASK,
	204	.min_uV = 850000,
	205	.uV_step = 25000,
42fad570 MB	206	.type = REGULATOR_VOLTAGE,
	207	.owner = THIS_MODULE,
	208	},
	209	};
	210
a5023574	211	static int wm8400_regulator_probe(struct platform_device *pdev)
42fad570	212	{
1ad02bbc	213	struct wm8400 *wm8400 = container_of(pdev, struct wm8400, regulators[pdev->id]);
c172708d	214	struct regulator_config config = { };
42fad570 MB	215	struct regulator_dev *rdev;
42fad570 MB	216
c172708d MB	217	config.dev = &pdev->dev;
	218	config.init_data = pdev->dev.platform_data;
	219	config.driver_data = wm8400;
c54a155d	220	config.regmap = wm8400->regmap;
42fad570	221
c172708d	222	rdev = regulator_register(&regulators[pdev->id], &config);
42fad570 MB	223	if (IS_ERR(rdev))
	224	return PTR_ERR(rdev);
	225
1ad02bbc DT	226	platform_set_drvdata(pdev, rdev);
1ad02bbc DT	227
42fad570 MB	228	return 0;
	229	}
	230
8dc995f5	231	static int wm8400_regulator_remove(struct platform_device *pdev)
42fad570 MB	232	{
	233	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	234
	235	regulator_unregister(rdev);
	236
	237	return 0;
	238	}
	239
	240	static struct platform_driver wm8400_regulator_driver = {
	241	.driver = {
	242	.name = "wm8400-regulator",
	243	},
	244	.probe = wm8400_regulator_probe,
5eb9f2b9	245	.remove = wm8400_regulator_remove,
42fad570 MB	246	};
	247
	248	/**
	249	* wm8400_register_regulator - enable software control of a WM8400 regulator
	250	*
	251	* This function enables software control of a WM8400 regulator via
	252	* the regulator API. It is intended to be called from the
	253	* platform_init() callback of the WM8400 MFD driver.
	254	*
	255	* @param dev The WM8400 device to operate on.
	256	* @param reg The regulator to control.
	257	* @param initdata Regulator initdata for the regulator.
	258	*/
	259	int wm8400_register_regulator(struct device *dev, int reg,
	260	struct regulator_init_data *initdata)
	261	{
1909e2f6	262	struct wm8400 *wm8400 = dev_get_drvdata(dev);
42fad570 MB	263
	264	if (wm8400->regulators[reg].name)
	265	return -EBUSY;
	266
	267	initdata->driver_data = wm8400;
	268
	269	wm8400->regulators[reg].name = "wm8400-regulator";
	270	wm8400->regulators[reg].id = reg;
	271	wm8400->regulators[reg].dev.parent = dev;
42fad570 MB	272	wm8400->regulators[reg].dev.platform_data = initdata;
	273
	274	return platform_device_register(&wm8400->regulators[reg]);
	275	}
	276	EXPORT_SYMBOL_GPL(wm8400_register_regulator);
	277
	278	static int __init wm8400_regulator_init(void)
	279	{
	280	return platform_driver_register(&wm8400_regulator_driver);
	281	}
5a1b22be	282	subsys_initcall(wm8400_regulator_init);
42fad570 MB	283
	284	static void __exit wm8400_regulator_exit(void)
	285	{
	286	platform_driver_unregister(&wm8400_regulator_driver);
	287	}
	288	module_exit(wm8400_regulator_exit);
	289
	290	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	291	MODULE_DESCRIPTION("WM8400 regulator driver");
	292	MODULE_LICENSE("GPL");
	293	MODULE_ALIAS("platform:wm8400-regulator");