[net-next-2.6.git] / drivers / regulator / tps6586x-regulator.c

/*
 * Regulator driver for TI TPS6586x
 *
 * Copyright (C) 2010 Compulab Ltd.
 * Author: Mike Rapoport <mike@compulab.co.il>
 *
 * Based on da903x
 * Copyright (C) 2006-2008 Marvell International Ltd.
 * Copyright (C) 2008 Compulab Ltd.
 *
 * 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/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps6586x.h>

/* supply control and voltage setting  */
#define TPS6586X_SUPPLYENA	0x10
#define TPS6586X_SUPPLYENB	0x11
#define TPS6586X_SUPPLYENC	0x12
#define TPS6586X_SUPPLYEND	0x13
#define TPS6586X_SUPPLYENE	0x14
#define TPS6586X_VCC1		0x20
#define TPS6586X_VCC2		0x21
#define TPS6586X_SM1V1		0x23
#define TPS6586X_SM1V2		0x24
#define TPS6586X_SM1SL		0x25
#define TPS6586X_SM0V1		0x26
#define TPS6586X_SM0V2		0x27
#define TPS6586X_SM0SL		0x28
#define TPS6586X_LDO2AV1	0x29
#define TPS6586X_LDO2AV2	0x2A
#define TPS6586X_LDO2BV1	0x2F
#define TPS6586X_LDO2BV2	0x30
#define TPS6586X_LDO4V1		0x32
#define TPS6586X_LDO4V2		0x33

/* converter settings  */
#define TPS6586X_SUPPLYV1	0x41
#define TPS6586X_SUPPLYV2	0x42
#define TPS6586X_SUPPLYV3	0x43
#define TPS6586X_SUPPLYV4	0x44
#define TPS6586X_SUPPLYV5	0x45
#define TPS6586X_SUPPLYV6	0x46
#define TPS6586X_SMODE1		0x47
#define TPS6586X_SMODE2		0x48

struct tps6586x_regulator {
	struct regulator_desc desc;

	int volt_reg;
	int volt_shift;
	int volt_nbits;
	int enable_bit[2];
	int enable_reg[2];

	int *voltages;

	/* for DVM regulators */
	int go_reg;
	int go_bit;
};

static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
{
	return rdev_get_dev(rdev)->parent->parent;
}

static int tps6586x_ldo_list_voltage(struct regulator_dev *rdev,
				     unsigned selector)
{
	struct tps6586x_regulator *info = rdev_get_drvdata(rdev);

	return info->voltages[selector] * 1000;
}


static int __tps6586x_ldo_set_voltage(struct device *parent,
				      struct tps6586x_regulator *ri,
				      int min_uV, int max_uV)
{
	int val, uV;
	uint8_t mask;

	for (val = 0; val < ri->desc.n_voltages; val++) {
		uV = ri->voltages[val] * 1000;

		/* LDO0 has minimal voltage 1.2 rather than 1.25 */
		if (ri->desc.id == TPS6586X_ID_LDO_0 && val == 0)
			uV -= 50 * 1000;

		/* use the first in-range value */
		if (min_uV <= uV && uV <= max_uV) {

			val <<= ri->volt_shift;
			mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;

			return tps6586x_update(parent, ri->volt_reg, val, mask);
		}
	}

	return -EINVAL;
}

static int tps6586x_ldo_set_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);

	return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV);
}

static int tps6586x_ldo_get_voltage(struct regulator_dev *rdev)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);
	uint8_t val, mask;
	int ret;

	ret = tps6586x_read(parent, ri->volt_reg, &val);
	if (ret)
		return ret;

	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	val = (val & mask) >> ri->volt_shift;

	if (val >= ri->desc.n_voltages)
		BUG();

	return ri->voltages[val] * 1000;
}

static int tps6586x_dvm_set_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);
	int ret;

	ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV);
	if (ret)
		return ret;

	return tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
}

static int tps6586x_regulator_enable(struct regulator_dev *rdev)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);

	return tps6586x_set_bits(parent, ri->enable_reg[0],
				 1 << ri->enable_bit[0]);
}

static int tps6586x_regulator_disable(struct regulator_dev *rdev)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);

	return tps6586x_clr_bits(parent, ri->enable_reg[0],
				 1 << ri->enable_bit[0]);
}

static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);
	uint8_t reg_val;
	int ret;

	ret = tps6586x_read(parent, ri->enable_reg[0], &reg_val);
	if (ret)
		return ret;

	return !!(reg_val & (1 << ri->enable_bit[0]));
}

static struct regulator_ops tps6586x_regulator_ldo_ops = {
	.list_voltage = tps6586x_ldo_list_voltage,
	.get_voltage = tps6586x_ldo_get_voltage,
	.set_voltage = tps6586x_ldo_set_voltage,

	.is_enabled = tps6586x_regulator_is_enabled,
	.enable = tps6586x_regulator_enable,
	.disable = tps6586x_regulator_disable,
};

static struct regulator_ops tps6586x_regulator_dvm_ops = {
	.list_voltage = tps6586x_ldo_list_voltage,
	.get_voltage = tps6586x_ldo_get_voltage,
	.set_voltage = tps6586x_dvm_set_voltage,

	.is_enabled = tps6586x_regulator_is_enabled,
	.enable = tps6586x_regulator_enable,
	.disable = tps6586x_regulator_disable,
};

static int tps6586x_ldo_voltages[] = {
	1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
};

static int tps6586x_ldo4_voltages[] = {
	1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
	1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
	2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
	2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
};

static int tps6586x_sm2_voltages[] = {
	3000, 3050, 3100, 3150, 3200, 3250, 3300, 3350,
	3400, 3450, 3500, 3550, 3600, 3650, 3700, 3750,
	3800, 3850, 3900, 3950, 4000, 4050, 4100, 4150,
	4200, 4250, 4300, 4350, 4400, 4450, 4500, 4550,
};

static int tps6586x_dvm_voltages[] = {
	 725,  750,  775,  800,  825,  850,  875,  900,
	 925,  950,  975, 1000, 1025, 1050, 1075, 1100,
	1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
	1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
};

#define TPS6586X_REGULATOR(_id, vdata, _ops, vreg, shift, nbits,	\
			   ereg0, ebit0, ereg1, ebit1, goreg, gobit)	\
{									\
	.desc	= {							\
		.name	= "REG-" #_id,					\
		.ops	= &tps6586x_regulator_##_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= TPS6586X_ID_##_id,				\
		.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages),	\
		.owner	= THIS_MODULE,					\
	},								\
	.volt_reg	= TPS6586X_##vreg,				\
	.volt_shift	= (shift),					\
	.volt_nbits	= (nbits),					\
	.enable_reg[0]	= TPS6586X_SUPPLY##ereg0,			\
	.enable_bit[0]	= (ebit0),					\
	.enable_reg[1]	= TPS6586X_SUPPLY##ereg1,			\
	.enable_bit[1]	= (ebit1),					\
	.voltages	= tps6586x_##vdata##_voltages,			\
}

#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits,			\
		     ereg0, ebit0, ereg1, ebit1)			\
	TPS6586X_REGULATOR(_id, vdata, ldo_ops, vreg, shift, nbits,	\
			   ereg0, ebit0, ereg1, ebit1, 0, 0)

#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits,			\
		     ereg0, ebit0, ereg1, ebit1, goreg, gobit)		\
	TPS6586X_REGULATOR(_id, vdata, dvm_ops, vreg, shift, nbits,	\
			   ereg0, ebit0, ereg1, ebit1, goreg, gobit)

static struct tps6586x_regulator tps6586x_regulator[] = {
	TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
	TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
	TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
	TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
	TPS6586X_LDO(LDO_8, ldo, SUPPLYV1, 5, 3, ENC, 6, END, 6),
	TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
	TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, ENE, 7, ENE, 7),
	TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
	TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 1, END, 1),

	TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
	TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
	TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
	TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
};

/*
 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
 * regulator state. Clearing one of this bits allows switching
 * regulator on and of with single register write.
 */
static inline int tps6586x_regulator_preinit(struct device *parent,
					     struct tps6586x_regulator *ri)
{
	uint8_t val1, val2;
	int ret;

	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
	if (ret)
		return ret;

	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
	if (ret)
		return ret;

	if (!(val2 & ri->enable_bit[1]))
		return 0;

	/*
	 * The regulator is on, but it's enabled with the bit we don't
	 * want to use, so we switch the enable bits
	 */
	if (!(val1 & ri->enable_bit[0])) {
		ret = tps6586x_set_bits(parent, ri->enable_reg[0],
					1 << ri->enable_bit[0]);
		if (ret)
			return ret;
	}

	return tps6586x_clr_bits(parent, ri->enable_reg[1],
				 1 << ri->enable_bit[1]);
}

static inline struct tps6586x_regulator *find_regulator_info(int id)
{
	struct tps6586x_regulator *ri;
	int i;

	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
		ri = &tps6586x_regulator[i];
		if (ri->desc.id == id)
			return ri;
	}
	return NULL;
}

static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
{
	struct tps6586x_regulator *ri = NULL;
	struct regulator_dev *rdev;
	int id = pdev->id;
	int err;

	dev_dbg(&pdev->dev, "Probing reulator %d\n", id);

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

	err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
	if (err)
		return err;

	rdev = regulator_register(&ri->desc, &pdev->dev,
				  pdev->dev.platform_data, ri);
	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 tps6586x_regulator_remove(struct platform_device *pdev)
{
	struct regulator_dev *rdev = platform_get_drvdata(pdev);

	regulator_unregister(rdev);
	return 0;
}

static struct platform_driver tps6586x_regulator_driver = {
	.driver	= {
		.name	= "tps6586x-regulator",
		.owner	= THIS_MODULE,
	},
	.probe		= tps6586x_regulator_probe,
	.remove		= __devexit_p(tps6586x_regulator_remove),
};

static int __init tps6586x_regulator_init(void)
{
	return platform_driver_register(&tps6586x_regulator_driver);
}
subsys_initcall(tps6586x_regulator_init);

static void __exit tps6586x_regulator_exit(void)
{
	platform_driver_unregister(&tps6586x_regulator_driver);
}
module_exit(tps6586x_regulator_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
MODULE_ALIAS("platform:tps6586x-regulator");
Commit	Line	Data
49610235 MR	1	/*
	2	* Regulator driver for TI TPS6586x
	3	*
	4	* Copyright (C) 2010 Compulab Ltd.
	5	* Author: Mike Rapoport <mike@compulab.co.il>
	6	*
	7	* Based on da903x
	8	* Copyright (C) 2006-2008 Marvell International Ltd.
	9	* Copyright (C) 2008 Compulab Ltd.
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License version 2 as
	13	* published by the Free Software Foundation.
	14	*/
	15
49610235 MR	16	#include <linux/kernel.h>
	17	#include <linux/init.h>
	18	#include <linux/err.h>
	19	#include <linux/slab.h>
	20	#include <linux/platform_device.h>
	21	#include <linux/regulator/driver.h>
	22	#include <linux/regulator/machine.h>
	23	#include <linux/mfd/tps6586x.h>
	24
	25	/* supply control and voltage setting */
	26	#define TPS6586X_SUPPLYENA 0x10
	27	#define TPS6586X_SUPPLYENB 0x11
	28	#define TPS6586X_SUPPLYENC 0x12
	29	#define TPS6586X_SUPPLYEND 0x13
	30	#define TPS6586X_SUPPLYENE 0x14
	31	#define TPS6586X_VCC1 0x20
	32	#define TPS6586X_VCC2 0x21
	33	#define TPS6586X_SM1V1 0x23
	34	#define TPS6586X_SM1V2 0x24
	35	#define TPS6586X_SM1SL 0x25
	36	#define TPS6586X_SM0V1 0x26
	37	#define TPS6586X_SM0V2 0x27
	38	#define TPS6586X_SM0SL 0x28
	39	#define TPS6586X_LDO2AV1 0x29
	40	#define TPS6586X_LDO2AV2 0x2A
	41	#define TPS6586X_LDO2BV1 0x2F
	42	#define TPS6586X_LDO2BV2 0x30
	43	#define TPS6586X_LDO4V1 0x32
	44	#define TPS6586X_LDO4V2 0x33
	45
	46	/* converter settings */
	47	#define TPS6586X_SUPPLYV1 0x41
	48	#define TPS6586X_SUPPLYV2 0x42
	49	#define TPS6586X_SUPPLYV3 0x43
	50	#define TPS6586X_SUPPLYV4 0x44
	51	#define TPS6586X_SUPPLYV5 0x45
	52	#define TPS6586X_SUPPLYV6 0x46
	53	#define TPS6586X_SMODE1 0x47
	54	#define TPS6586X_SMODE2 0x48
	55
	56	struct tps6586x_regulator {
	57	struct regulator_desc desc;
	58
	59	int volt_reg;
	60	int volt_shift;
	61	int volt_nbits;
	62	int enable_bit[2];
	63	int enable_reg[2];
	64
	65	int *voltages;
	66
	67	/* for DVM regulators */
	68	int go_reg;
	69	int go_bit;
	70	};
	71
	72	static inline struct device to_tps6586x_dev(struct regulator_dev rdev)
	73	{
	74	return rdev_get_dev(rdev)->parent->parent;
	75	}
	76
	77	static int tps6586x_ldo_list_voltage(struct regulator_dev *rdev,
	78	unsigned selector)
	79	{
80	struct tps6586x_regulator *info = rdev_get_drvdata(rdev);
81
4cc2e393	82	return info->voltages[selector] * 1000;
49610235 MR	83	}
	84
	85
	86	static int __tps6586x_ldo_set_voltage(struct device *parent,
	87	struct tps6586x_regulator *ri,
	88	int min_uV, int max_uV)
	89	{
	90	int val, uV;
	91	uint8_t mask;
	92
	93	for (val = 0; val < ri->desc.n_voltages; val++) {
	94	uV = ri->voltages[val] * 1000;
	95
	96	/* LDO0 has minimal voltage 1.2 rather than 1.25 */
	97	if (ri->desc.id == TPS6586X_ID_LDO_0 && val == 0)
	98	uV -= 50 * 1000;
	99
	100	/* use the first in-range value */
	101	if (min_uV <= uV && uV <= max_uV) {
	102
	103	val <<= ri->volt_shift;
	104	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	105
	106	return tps6586x_update(parent, ri->volt_reg, val, mask);
	107	}
	108	}
	109
	110	return -EINVAL;
	111	}
	112
	113	static int tps6586x_ldo_set_voltage(struct regulator_dev *rdev,
	114	int min_uV, int max_uV)
	115	{
	116	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	117	struct device *parent = to_tps6586x_dev(rdev);
	118
	119	return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV);
	120	}
	121
	122	static int tps6586x_ldo_get_voltage(struct regulator_dev *rdev)
	123	{
	124	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	125	struct device *parent = to_tps6586x_dev(rdev);
	126	uint8_t val, mask;
	127	int ret;
	128
	129	ret = tps6586x_read(parent, ri->volt_reg, &val);
	130	if (ret)
	131	return ret;
	132
	133	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	134	val = (val & mask) >> ri->volt_shift;
	135
327531ba	136	if (val >= ri->desc.n_voltages)
49610235 MR	137	BUG();
49610235 MR	138
4cc2e393	139	return ri->voltages[val] * 1000;
49610235 MR	140	}
	141
	142	static int tps6586x_dvm_set_voltage(struct regulator_dev *rdev,
	143	int min_uV, int max_uV)
	144	{
	145	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	146	struct device *parent = to_tps6586x_dev(rdev);
	147	int ret;
	148
	149	ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV);
	150	if (ret)
	151	return ret;
	152
938b4592	153	return tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
49610235 MR	154	}
	155
	156	static int tps6586x_regulator_enable(struct regulator_dev *rdev)
	157	{
	158	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	159	struct device *parent = to_tps6586x_dev(rdev);
	160
	161	return tps6586x_set_bits(parent, ri->enable_reg[0],
	162	1 << ri->enable_bit[0]);
	163	}
	164
	165	static int tps6586x_regulator_disable(struct regulator_dev *rdev)
	166	{
	167	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	168	struct device *parent = to_tps6586x_dev(rdev);
	169
	170	return tps6586x_clr_bits(parent, ri->enable_reg[0],
	171	1 << ri->enable_bit[0]);
	172	}
	173
	174	static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
	175	{
	176	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	177	struct device *parent = to_tps6586x_dev(rdev);
	178	uint8_t reg_val;
	179	int ret;
	180
	181	ret = tps6586x_read(parent, ri->enable_reg[0], &reg_val);
	182	if (ret)
	183	return ret;
	184
	185	return !!(reg_val & (1 << ri->enable_bit[0]));
	186	}
	187
	188	static struct regulator_ops tps6586x_regulator_ldo_ops = {
	189	.list_voltage = tps6586x_ldo_list_voltage,
	190	.get_voltage = tps6586x_ldo_get_voltage,
	191	.set_voltage = tps6586x_ldo_set_voltage,
	192
	193	.is_enabled = tps6586x_regulator_is_enabled,
	194	.enable = tps6586x_regulator_enable,
	195	.disable = tps6586x_regulator_disable,
	196	};
	197
	198	static struct regulator_ops tps6586x_regulator_dvm_ops = {
	199	.list_voltage = tps6586x_ldo_list_voltage,
	200	.get_voltage = tps6586x_ldo_get_voltage,
	201	.set_voltage = tps6586x_dvm_set_voltage,
	202
	203	.is_enabled = tps6586x_regulator_is_enabled,
	204	.enable = tps6586x_regulator_enable,
	205	.disable = tps6586x_regulator_disable,
	206	};
	207
	208	static int tps6586x_ldo_voltages[] = {
	209	1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
	210	};
	211
	212	static int tps6586x_ldo4_voltages[] = {
	213	1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
	214	1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
	215	2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
	216	2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
	217	};
218
4cc2e393 GK	219	static int tps6586x_sm2_voltages[] = {
	220	3000, 3050, 3100, 3150, 3200, 3250, 3300, 3350,
	221	3400, 3450, 3500, 3550, 3600, 3650, 3700, 3750,
	222	3800, 3850, 3900, 3950, 4000, 4050, 4100, 4150,
	223	4200, 4250, 4300, 4350, 4400, 4450, 4500, 4550,
	224	};
	225
49610235 MR	226	static int tps6586x_dvm_voltages[] = {
	227	725, 750, 775, 800, 825, 850, 875, 900,
	228	925, 950, 975, 1000, 1025, 1050, 1075, 1100,
	229	1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
	230	1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
	231	};
	232
	233	#define TPS6586X_REGULATOR(_id, vdata, _ops, vreg, shift, nbits, \
	234	ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
	235	{ \
	236	.desc = { \
	237	.name = "REG-" #_id, \
	238	.ops = &tps6586x_regulator_##_ops, \
	239	.type = REGULATOR_VOLTAGE, \
	240	.id = TPS6586X_ID_##_id, \
	241	.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
	242	.owner = THIS_MODULE, \
	243	}, \
	244	.volt_reg = TPS6586X_##vreg, \
	245	.volt_shift = (shift), \
	246	.volt_nbits = (nbits), \
	247	.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
	248	.enable_bit[0] = (ebit0), \
	249	.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
	250	.enable_bit[1] = (ebit1), \
	251	.voltages = tps6586x_##vdata##_voltages, \
	252	}
	253
	254	#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits, \
	255	ereg0, ebit0, ereg1, ebit1) \
	256	TPS6586X_REGULATOR(_id, vdata, ldo_ops, vreg, shift, nbits, \
	257	ereg0, ebit0, ereg1, ebit1, 0, 0)
	258
	259	#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits, \
	260	ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
	261	TPS6586X_REGULATOR(_id, vdata, dvm_ops, vreg, shift, nbits, \
	262	ereg0, ebit0, ereg1, ebit1, goreg, gobit)
	263
	264	static struct tps6586x_regulator tps6586x_regulator[] = {
	265	TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
	266	TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
	267	TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
	268	TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	269	TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
	270	TPS6586X_LDO(LDO_8, ldo, SUPPLYV1, 5, 3, ENC, 6, END, 6),
	271	TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
	272	TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, ENE, 7, ENE, 7),
	273	TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
4cc2e393	274	TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 1, END, 1),
49610235 MR	275
	276	TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
	277	TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
	278	TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
	279	TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
	280	};
	281
	282	/*
	283	* TPS6586X has 2 enable bits that are OR'ed to determine the actual
	284	* regulator state. Clearing one of this bits allows switching
	285	* regulator on and of with single register write.
	286	*/
	287	static inline int tps6586x_regulator_preinit(struct device *parent,
	288	struct tps6586x_regulator *ri)
	289	{
	290	uint8_t val1, val2;
	291	int ret;
	292
	293	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
	294	if (ret)
	295	return ret;
	296
	297	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
	298	if (ret)
	299	return ret;
	300
	301	if (!(val2 & ri->enable_bit[1]))
	302	return 0;
	303
	304	/*
	305	* The regulator is on, but it's enabled with the bit we don't
	306	* want to use, so we switch the enable bits
	307	*/
	308	if (!(val1 & ri->enable_bit[0])) {
	309	ret = tps6586x_set_bits(parent, ri->enable_reg[0],
	310	1 << ri->enable_bit[0]);
	311	if (ret)
	312	return ret;
	313	}
	314
	315	return tps6586x_clr_bits(parent, ri->enable_reg[1],
	316	1 << ri->enable_bit[1]);
	317	}
	318
	319	static inline struct tps6586x_regulator *find_regulator_info(int id)
	320	{
	321	struct tps6586x_regulator *ri;
	322	int i;
	323
	324	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
	325	ri = &tps6586x_regulator[i];
	326	if (ri->desc.id == id)
	327	return ri;
	328	}
	329	return NULL;
	330	}
	331
	332	static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
	333	{
	334	struct tps6586x_regulator *ri = NULL;
	335	struct regulator_dev *rdev;
	336	int id = pdev->id;
	337	int err;
	338
339	dev_dbg(&pdev->dev, "Probing reulator %d\n", id);
340
341	ri = find_regulator_info(id);
342	if (ri == NULL) {
343	dev_err(&pdev->dev, "invalid regulator ID specified\n");
344	return -EINVAL;
345	}
346
347	err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
348	if (err)
349	return err;
350
351	rdev = regulator_register(&ri->desc, &pdev->dev,
352	pdev->dev.platform_data, ri);
353	if (IS_ERR(rdev)) {
354	dev_err(&pdev->dev, "failed to register regulator %s\n",
355	ri->desc.name);
356	return PTR_ERR(rdev);
357	}
358
e7973c3c	359	platform_set_drvdata(pdev, rdev);
49610235 MR	360
	361	return 0;
	362	}
	363
	364	static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
	365	{
e7973c3c AL	366	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	367
	368	regulator_unregister(rdev);
49610235 MR	369	return 0;
	370	}
	371
	372	static struct platform_driver tps6586x_regulator_driver = {
	373	.driver = {
	374	.name = "tps6586x-regulator",
	375	.owner = THIS_MODULE,
	376	},
	377	.probe = tps6586x_regulator_probe,
	378	.remove = __devexit_p(tps6586x_regulator_remove),
	379	};
	380
	381	static int __init tps6586x_regulator_init(void)
	382	{
	383	return platform_driver_register(&tps6586x_regulator_driver);
	384	}
	385	subsys_initcall(tps6586x_regulator_init);
	386
	387	static void __exit tps6586x_regulator_exit(void)
	388	{
	389	platform_driver_unregister(&tps6586x_regulator_driver);
	390	}
	391	module_exit(tps6586x_regulator_exit);
	392
	393	MODULE_LICENSE("GPL");
	394	MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
	395	MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
	396	MODULE_ALIAS("platform:tps6586x-regulator");