[linux-block.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.
 */

#define DEBUG
#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];
}


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];
}

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, 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_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, dvm, 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, ri);

	return 0;
}

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