[deliverable/linux.git] / drivers / regulator / max8925-regulator.c

/*
 * Regulators driver for Maxim max8925
 *
 * Copyright (C) 2009 Marvell International Ltd.
 *      Haojian Zhuang <haojian.zhuang@marvell.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/max8925.h>

#define SD1_DVM_VMIN		850000
#define SD1_DVM_VMAX		1000000
#define SD1_DVM_STEP		50000
#define SD1_DVM_SHIFT		5		/* SDCTL1 bit5 */
#define SD1_DVM_EN		6		/* SDV1 bit 6 */

/* bit definitions in LDO control registers */
#define LDO_SEQ_I2C		0x7		/* Power U/D by i2c */
#define LDO_SEQ_MASK		0x7		/* Power U/D sequence mask */
#define LDO_SEQ_SHIFT		2		/* Power U/D sequence offset */
#define LDO_I2C_EN		0x1		/* Enable by i2c */
#define LDO_I2C_EN_MASK		0x1		/* Enable mask by i2c */
#define LDO_I2C_EN_SHIFT	0		/* Enable offset by i2c */

struct max8925_regulator_info {
	struct regulator_desc	desc;
	struct regulator_dev	*regulator;
	struct i2c_client	*i2c;
	struct max8925_chip	*chip;

	int	max_uV;
	int	vol_reg;
	int	enable_reg;
};

static inline int check_range(struct max8925_regulator_info *info,
			      int min_uV, int max_uV)
{
	if (min_uV < info->desc.min_uV || min_uV > info->max_uV)
		return -EINVAL;

	return 0;
}

static int max8925_set_voltage_sel(struct regulator_dev *rdev,
				   unsigned int selector)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	unsigned char mask = rdev->desc->n_voltages - 1;

	return max8925_set_bits(info->i2c, info->vol_reg, mask, selector);
}

static int max8925_get_voltage_sel(struct regulator_dev *rdev)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	unsigned char data, mask;
	int ret;

	ret = max8925_reg_read(info->i2c, info->vol_reg);
	if (ret < 0)
		return ret;
	mask = rdev->desc->n_voltages - 1;
	data = ret & mask;

	return data;
}

static int max8925_enable(struct regulator_dev *rdev)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);

	return max8925_set_bits(info->i2c, info->enable_reg,
				LDO_SEQ_MASK << LDO_SEQ_SHIFT |
				LDO_I2C_EN_MASK << LDO_I2C_EN_SHIFT,
				LDO_SEQ_I2C << LDO_SEQ_SHIFT |
				LDO_I2C_EN << LDO_I2C_EN_SHIFT);
}

static int max8925_disable(struct regulator_dev *rdev)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);

	return max8925_set_bits(info->i2c, info->enable_reg,
				LDO_SEQ_MASK << LDO_SEQ_SHIFT |
				LDO_I2C_EN_MASK << LDO_I2C_EN_SHIFT,
				LDO_SEQ_I2C << LDO_SEQ_SHIFT);
}

static int max8925_is_enabled(struct regulator_dev *rdev)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	int ldo_seq, ret;

	ret = max8925_reg_read(info->i2c, info->enable_reg);
	if (ret < 0)
		return ret;
	ldo_seq = (ret >> LDO_SEQ_SHIFT) & LDO_SEQ_MASK;
	if (ldo_seq != LDO_SEQ_I2C)
		return 1;
	else
		return ret & (LDO_I2C_EN_MASK << LDO_I2C_EN_SHIFT);
}

static int max8925_set_dvm_voltage(struct regulator_dev *rdev, int uV)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	unsigned char data, mask;

	if (uV < SD1_DVM_VMIN || uV > SD1_DVM_VMAX)
		return -EINVAL;

	data = DIV_ROUND_UP(uV - SD1_DVM_VMIN, SD1_DVM_STEP);
	data <<= SD1_DVM_SHIFT;
	mask = 3 << SD1_DVM_SHIFT;

	return max8925_set_bits(info->i2c, info->enable_reg, mask, data);
}

static int max8925_set_dvm_enable(struct regulator_dev *rdev)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);

	return max8925_set_bits(info->i2c, info->vol_reg, 1 << SD1_DVM_EN,
				1 << SD1_DVM_EN);
}

static int max8925_set_dvm_disable(struct regulator_dev *rdev)
{
	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);

	return max8925_set_bits(info->i2c, info->vol_reg, 1 << SD1_DVM_EN, 0);
}

static struct regulator_ops max8925_regulator_sdv_ops = {
	.map_voltage		= regulator_map_voltage_linear,
	.list_voltage		= regulator_list_voltage_linear,
	.set_voltage_sel	= max8925_set_voltage_sel,
	.get_voltage_sel	= max8925_get_voltage_sel,
	.enable			= max8925_enable,
	.disable		= max8925_disable,
	.is_enabled		= max8925_is_enabled,
	.set_suspend_voltage	= max8925_set_dvm_voltage,
	.set_suspend_enable	= max8925_set_dvm_enable,
	.set_suspend_disable	= max8925_set_dvm_disable,
};

static struct regulator_ops max8925_regulator_ldo_ops = {
	.map_voltage		= regulator_map_voltage_linear,
	.list_voltage		= regulator_list_voltage_linear,
	.set_voltage_sel	= max8925_set_voltage_sel,
	.get_voltage_sel	= max8925_get_voltage_sel,
	.enable			= max8925_enable,
	.disable		= max8925_disable,
	.is_enabled		= max8925_is_enabled,
};

#define MAX8925_SDV(_id, min, max, step)			\
{								\
	.desc	= {						\
		.name	= "SDV" #_id,				\
		.ops	= &max8925_regulator_sdv_ops,		\
		.type	= REGULATOR_VOLTAGE,			\
		.id	= MAX8925_ID_SD##_id,			\
		.owner	= THIS_MODULE,				\
		.n_voltages = 64,				\
		.min_uV = min * 1000,				\
		.uV_step = step * 1000,				\
	},							\
	.max_uV		= max * 1000,				\
	.vol_reg	= MAX8925_SDV##_id,			\
	.enable_reg	= MAX8925_SDCTL##_id,			\
}

#define MAX8925_LDO(_id, min, max, step)			\
{								\
	.desc	= {						\
		.name	= "LDO" #_id,				\
		.ops	= &max8925_regulator_ldo_ops,		\
		.type	= REGULATOR_VOLTAGE,			\
		.id	= MAX8925_ID_LDO##_id,			\
		.owner	= THIS_MODULE,				\
		.n_voltages = 64,				\
		.min_uV = min * 1000,				\
		.uV_step = step * 1000,				\
	},							\
	.max_uV		= max * 1000,				\
	.vol_reg	= MAX8925_LDOVOUT##_id,			\
	.enable_reg	= MAX8925_LDOCTL##_id,			\
}

static struct max8925_regulator_info max8925_regulator_info[] = {
	MAX8925_SDV(1, 637.5, 1425, 12.5),
	MAX8925_SDV(2,   650, 2225,   25),
	MAX8925_SDV(3,   750, 3900,   50),

	MAX8925_LDO(1,  750, 3900, 50),
	MAX8925_LDO(2,  650, 2250, 25),
	MAX8925_LDO(3,  650, 2250, 25),
	MAX8925_LDO(4,  750, 3900, 50),
	MAX8925_LDO(5,  750, 3900, 50),
	MAX8925_LDO(6,  750, 3900, 50),
	MAX8925_LDO(7,  750, 3900, 50),
	MAX8925_LDO(8,  750, 3900, 50),
	MAX8925_LDO(9,  750, 3900, 50),
	MAX8925_LDO(10, 750, 3900, 50),
	MAX8925_LDO(11, 750, 3900, 50),
	MAX8925_LDO(12, 750, 3900, 50),
	MAX8925_LDO(13, 750, 3900, 50),
	MAX8925_LDO(14, 750, 3900, 50),
	MAX8925_LDO(15, 750, 3900, 50),
	MAX8925_LDO(16, 750, 3900, 50),
	MAX8925_LDO(17, 650, 2250, 25),
	MAX8925_LDO(18, 650, 2250, 25),
	MAX8925_LDO(19, 750, 3900, 50),
	MAX8925_LDO(20, 750, 3900, 50),
};

static struct max8925_regulator_info * __devinit find_regulator_info(int id)
{
	struct max8925_regulator_info *ri;
	int i;

	for (i = 0; i < ARRAY_SIZE(max8925_regulator_info); i++) {
		ri = &max8925_regulator_info[i];
		if (ri->desc.id == id)
			return ri;
	}
	return NULL;
}

static int __devinit max8925_regulator_probe(struct platform_device *pdev)
{
	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
	struct max8925_platform_data *pdata = chip->dev->platform_data;
	struct regulator_config config = { };
	struct max8925_regulator_info *ri;
	struct regulator_dev *rdev;

	ri = find_regulator_info(pdev->id);
	if (ri == NULL) {
		dev_err(&pdev->dev, "invalid regulator ID specified\n");
		return -EINVAL;
	}
	ri->i2c = chip->i2c;
	ri->chip = chip;

	config.dev = &pdev->dev;
	config.init_data = pdata->regulator[pdev->id];
	config.driver_data = ri;

	rdev = regulator_register(&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, rdev);
	return 0;
}

static int __devexit max8925_regulator_remove(struct platform_device *pdev)
{
	struct regulator_dev *rdev = platform_get_drvdata(pdev);

	platform_set_drvdata(pdev, NULL);
	regulator_unregister(rdev);

	return 0;
}

static struct platform_driver max8925_regulator_driver = {
	.driver		= {
		.name	= "max8925-regulator",
		.owner	= THIS_MODULE,
	},
	.probe		= max8925_regulator_probe,
	.remove		= __devexit_p(max8925_regulator_remove),
};

static int __init max8925_regulator_init(void)
{
	return platform_driver_register(&max8925_regulator_driver);
}
subsys_initcall(max8925_regulator_init);

static void __exit max8925_regulator_exit(void)
{
	platform_driver_unregister(&max8925_regulator_driver);
}
module_exit(max8925_regulator_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
MODULE_DESCRIPTION("Regulator Driver for Maxim 8925 PMIC");
MODULE_ALIAS("platform:max8925-regulator");
Commit	Line	Data
08ff6f2a HZ	1	/*
	2	* Regulators driver for Maxim max8925
	3	*
	4	* Copyright (C) 2009 Marvell International Ltd.
	5	* Haojian Zhuang <haojian.zhuang@marvell.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11	#include <linux/kernel.h>
65602c32	12	#include <linux/module.h>
08ff6f2a HZ	13	#include <linux/init.h>
	14	#include <linux/err.h>
	15	#include <linux/i2c.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/regulator/driver.h>
	18	#include <linux/regulator/machine.h>
	19	#include <linux/mfd/max8925.h>
	20
	21	#define SD1_DVM_VMIN 850000
	22	#define SD1_DVM_VMAX 1000000
	23	#define SD1_DVM_STEP 50000
	24	#define SD1_DVM_SHIFT 5 /* SDCTL1 bit5 */
	25	#define SD1_DVM_EN 6 /* SDV1 bit 6 */
	26
65364e9a KL	27	/* bit definitions in LDO control registers */
	28	#define LDO_SEQ_I2C 0x7 /* Power U/D by i2c */
	29	#define LDO_SEQ_MASK 0x7 /* Power U/D sequence mask */
	30	#define LDO_SEQ_SHIFT 2 /* Power U/D sequence offset */
	31	#define LDO_I2C_EN 0x1 /* Enable by i2c */
	32	#define LDO_I2C_EN_MASK 0x1 /* Enable mask by i2c */
	33	#define LDO_I2C_EN_SHIFT 0 /* Enable offset by i2c */
db13c040	34
08ff6f2a HZ	35	struct max8925_regulator_info {
	36	struct regulator_desc desc;
	37	struct regulator_dev *regulator;
	38	struct i2c_client *i2c;
	39	struct max8925_chip *chip;
	40
08ff6f2a	41	int max_uV;
08ff6f2a	42	int vol_reg;
08ff6f2a HZ	43	int enable_reg;
	44	};
	45
	46	static inline int check_range(struct max8925_regulator_info *info,
	47	int min_uV, int max_uV)
	48	{
4093e739	49	if (min_uV < info->desc.min_uV \|\| min_uV > info->max_uV)
08ff6f2a HZ	50	return -EINVAL;
	51
	52	return 0;
	53	}
	54
cd8318cb AL	55	static int max8925_set_voltage_sel(struct regulator_dev *rdev,
cd8318cb AL	56	unsigned int selector)
08ff6f2a HZ	57	{
08ff6f2a HZ	58	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
cd8318cb	59	unsigned char mask = rdev->desc->n_voltages - 1;
08ff6f2a	60
cd8318cb	61	return max8925_set_bits(info->i2c, info->vol_reg, mask, selector);
08ff6f2a HZ	62	}
08ff6f2a HZ	63
3c8983b9	64	static int max8925_get_voltage_sel(struct regulator_dev *rdev)
08ff6f2a HZ	65	{
	66	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	67	unsigned char data, mask;
	68	int ret;
	69
	70	ret = max8925_reg_read(info->i2c, info->vol_reg);
	71	if (ret < 0)
	72	return ret;
7f52ba77 AL	73	mask = rdev->desc->n_voltages - 1;
7f52ba77 AL	74	data = ret & mask;
08ff6f2a	75
3c8983b9	76	return data;
08ff6f2a HZ	77	}
	78
	79	static int max8925_enable(struct regulator_dev *rdev)
	80	{
	81	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	82
	83	return max8925_set_bits(info->i2c, info->enable_reg,
65364e9a KL	84	LDO_SEQ_MASK << LDO_SEQ_SHIFT \|
	85	LDO_I2C_EN_MASK << LDO_I2C_EN_SHIFT,
	86	LDO_SEQ_I2C << LDO_SEQ_SHIFT \|
	87	LDO_I2C_EN << LDO_I2C_EN_SHIFT);
08ff6f2a HZ	88	}
	89
	90	static int max8925_disable(struct regulator_dev *rdev)
	91	{
	92	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	93
	94	return max8925_set_bits(info->i2c, info->enable_reg,
65364e9a KL	95	LDO_SEQ_MASK << LDO_SEQ_SHIFT \|
	96	LDO_I2C_EN_MASK << LDO_I2C_EN_SHIFT,
	97	LDO_SEQ_I2C << LDO_SEQ_SHIFT);
08ff6f2a HZ	98	}
	99
	100	static int max8925_is_enabled(struct regulator_dev *rdev)
	101	{
	102	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
65364e9a	103	int ldo_seq, ret;
08ff6f2a	104
4b99fef0	105	ret = max8925_reg_read(info->i2c, info->enable_reg);
08ff6f2a HZ	106	if (ret < 0)
08ff6f2a HZ	107	return ret;
65364e9a KL	108	ldo_seq = (ret >> LDO_SEQ_SHIFT) & LDO_SEQ_MASK;
	109	if (ldo_seq != LDO_SEQ_I2C)
	110	return 1;
	111	else
	112	return ret & (LDO_I2C_EN_MASK << LDO_I2C_EN_SHIFT);
08ff6f2a HZ	113	}
	114
	115	static int max8925_set_dvm_voltage(struct regulator_dev *rdev, int uV)
	116	{
	117	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	118	unsigned char data, mask;
	119
	120	if (uV < SD1_DVM_VMIN \|\| uV > SD1_DVM_VMAX)
	121	return -EINVAL;
	122
5db6d09a	123	data = DIV_ROUND_UP(uV - SD1_DVM_VMIN, SD1_DVM_STEP);
08ff6f2a HZ	124	data <<= SD1_DVM_SHIFT;
	125	mask = 3 << SD1_DVM_SHIFT;
	126
	127	return max8925_set_bits(info->i2c, info->enable_reg, mask, data);
	128	}
	129
	130	static int max8925_set_dvm_enable(struct regulator_dev *rdev)
	131	{
	132	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	133
	134	return max8925_set_bits(info->i2c, info->vol_reg, 1 << SD1_DVM_EN,
	135	1 << SD1_DVM_EN);
	136	}
	137
	138	static int max8925_set_dvm_disable(struct regulator_dev *rdev)
	139	{
	140	struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
	141
	142	return max8925_set_bits(info->i2c, info->vol_reg, 1 << SD1_DVM_EN, 0);
	143	}
	144
	145	static struct regulator_ops max8925_regulator_sdv_ops = {
cd8318cb	146	.map_voltage = regulator_map_voltage_linear,
4093e739	147	.list_voltage = regulator_list_voltage_linear,
cd8318cb	148	.set_voltage_sel = max8925_set_voltage_sel,
3c8983b9	149	.get_voltage_sel = max8925_get_voltage_sel,
08ff6f2a HZ	150	.enable = max8925_enable,
	151	.disable = max8925_disable,
	152	.is_enabled = max8925_is_enabled,
	153	.set_suspend_voltage = max8925_set_dvm_voltage,
	154	.set_suspend_enable = max8925_set_dvm_enable,
	155	.set_suspend_disable = max8925_set_dvm_disable,
	156	};
	157
	158	static struct regulator_ops max8925_regulator_ldo_ops = {
cd8318cb	159	.map_voltage = regulator_map_voltage_linear,
4093e739	160	.list_voltage = regulator_list_voltage_linear,
cd8318cb	161	.set_voltage_sel = max8925_set_voltage_sel,
3c8983b9	162	.get_voltage_sel = max8925_get_voltage_sel,
08ff6f2a HZ	163	.enable = max8925_enable,
	164	.disable = max8925_disable,
	165	.is_enabled = max8925_is_enabled,
	166	};
	167
	168	#define MAX8925_SDV(_id, min, max, step) \
	169	{ \
	170	.desc = { \
	171	.name = "SDV" #_id, \
	172	.ops = &max8925_regulator_sdv_ops, \
	173	.type = REGULATOR_VOLTAGE, \
	174	.id = MAX8925_ID_SD##_id, \
	175	.owner = THIS_MODULE, \
7f52ba77	176	.n_voltages = 64, \
4093e739 AL	177	.min_uV = min * 1000, \
4093e739 AL	178	.uV_step = step * 1000, \
08ff6f2a	179	}, \
08ff6f2a	180	.max_uV = max * 1000, \
08ff6f2a	181	.vol_reg = MAX8925_SDV##_id, \
08ff6f2a	182	.enable_reg = MAX8925_SDCTL##_id, \
08ff6f2a HZ	183	}
	184
	185	#define MAX8925_LDO(_id, min, max, step) \
	186	{ \
	187	.desc = { \
	188	.name = "LDO" #_id, \
	189	.ops = &max8925_regulator_ldo_ops, \
	190	.type = REGULATOR_VOLTAGE, \
	191	.id = MAX8925_ID_LDO##_id, \
	192	.owner = THIS_MODULE, \
7f52ba77	193	.n_voltages = 64, \
4093e739 AL	194	.min_uV = min * 1000, \
4093e739 AL	195	.uV_step = step * 1000, \
08ff6f2a	196	}, \
08ff6f2a	197	.max_uV = max * 1000, \
08ff6f2a	198	.vol_reg = MAX8925_LDOVOUT##_id, \
08ff6f2a	199	.enable_reg = MAX8925_LDOCTL##_id, \
08ff6f2a HZ	200	}
	201
	202	static struct max8925_regulator_info max8925_regulator_info[] = {
	203	MAX8925_SDV(1, 637.5, 1425, 12.5),
	204	MAX8925_SDV(2, 650, 2225, 25),
	205	MAX8925_SDV(3, 750, 3900, 50),
	206
	207	MAX8925_LDO(1, 750, 3900, 50),
	208	MAX8925_LDO(2, 650, 2250, 25),
	209	MAX8925_LDO(3, 650, 2250, 25),
	210	MAX8925_LDO(4, 750, 3900, 50),
	211	MAX8925_LDO(5, 750, 3900, 50),
	212	MAX8925_LDO(6, 750, 3900, 50),
	213	MAX8925_LDO(7, 750, 3900, 50),
	214	MAX8925_LDO(8, 750, 3900, 50),
	215	MAX8925_LDO(9, 750, 3900, 50),
	216	MAX8925_LDO(10, 750, 3900, 50),
	217	MAX8925_LDO(11, 750, 3900, 50),
	218	MAX8925_LDO(12, 750, 3900, 50),
	219	MAX8925_LDO(13, 750, 3900, 50),
	220	MAX8925_LDO(14, 750, 3900, 50),
	221	MAX8925_LDO(15, 750, 3900, 50),
	222	MAX8925_LDO(16, 750, 3900, 50),
	223	MAX8925_LDO(17, 650, 2250, 25),
	224	MAX8925_LDO(18, 650, 2250, 25),
	225	MAX8925_LDO(19, 750, 3900, 50),
	226	MAX8925_LDO(20, 750, 3900, 50),
	227	};
	228
3fff6c04	229	static struct max8925_regulator_info * __devinit find_regulator_info(int id)
08ff6f2a HZ	230	{
	231	struct max8925_regulator_info *ri;
	232	int i;
	233
	234	for (i = 0; i < ARRAY_SIZE(max8925_regulator_info); i++) {
	235	ri = &max8925_regulator_info[i];
	236	if (ri->desc.id == id)
	237	return ri;
	238	}
	239	return NULL;
	240	}
	241
	242	static int __devinit max8925_regulator_probe(struct platform_device *pdev)
	243	{
	244	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
	245	struct max8925_platform_data *pdata = chip->dev->platform_data;
c172708d	246	struct regulator_config config = { };
3fff6c04	247	struct max8925_regulator_info *ri;
08ff6f2a HZ	248	struct regulator_dev *rdev;
	249
	250	ri = find_regulator_info(pdev->id);
	251	if (ri == NULL) {
	252	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	253	return -EINVAL;
	254	}
	255	ri->i2c = chip->i2c;
	256	ri->chip = chip;
	257
c172708d MB	258	config.dev = &pdev->dev;
	259	config.init_data = pdata->regulator[pdev->id];
	260	config.driver_data = ri;
	261
	262	rdev = regulator_register(&ri->desc, &config);
08ff6f2a HZ	263	if (IS_ERR(rdev)) {
	264	dev_err(&pdev->dev, "failed to register regulator %s\n",
	265	ri->desc.name);
	266	return PTR_ERR(rdev);
	267	}
	268
	269	platform_set_drvdata(pdev, rdev);
	270	return 0;
	271	}
	272
	273	static int __devexit max8925_regulator_remove(struct platform_device *pdev)
	274	{
	275	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	276
3fff6c04	277	platform_set_drvdata(pdev, NULL);
08ff6f2a	278	regulator_unregister(rdev);
3fff6c04	279
08ff6f2a HZ	280	return 0;
	281	}
	282
	283	static struct platform_driver max8925_regulator_driver = {
	284	.driver = {
	285	.name = "max8925-regulator",
	286	.owner = THIS_MODULE,
	287	},
	288	.probe = max8925_regulator_probe,
	289	.remove = __devexit_p(max8925_regulator_remove),
	290	};
	291
	292	static int __init max8925_regulator_init(void)
	293	{
	294	return platform_driver_register(&max8925_regulator_driver);
	295	}
	296	subsys_initcall(max8925_regulator_init);
	297
	298	static void __exit max8925_regulator_exit(void)
	299	{
	300	platform_driver_unregister(&max8925_regulator_driver);
	301	}
	302	module_exit(max8925_regulator_exit);
	303
	304	MODULE_LICENSE("GPL");
	305	MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
	306	MODULE_DESCRIPTION("Regulator Driver for Maxim 8925 PMIC");
	307	MODULE_ALIAS("platform:max8925-regulator");