[deliverable/linux.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/module.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_list_voltage(struct regulator_dev *rdev, unsigned selector)
{
	struct tps6586x_regulator *info = rdev_get_drvdata(rdev);
	int rid = rdev_get_id(rdev);

	/* LDO0 has minimal voltage 1.2V rather than 1.25V */
	if ((rid == TPS6586X_ID_LDO_0) && (selector == 0))
		return (info->voltages[0] - 50) * 1000;

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


static int tps6586x_set_voltage_sel(struct regulator_dev *rdev,
				    unsigned selector)
{
	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	struct device *parent = to_tps6586x_dev(rdev);
	int ret, val, rid = rdev_get_id(rdev);
	uint8_t mask;

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

	ret = tps6586x_update(parent, ri->volt_reg, val, mask);
	if (ret)
		return ret;

	/* Update go bit for DVM regulators */
	switch (rid) {
	case TPS6586X_ID_LDO_2:
	case TPS6586X_ID_LDO_4:
	case TPS6586X_ID_SM_0:
	case TPS6586X_ID_SM_1:
		ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
		break;
	}
	return ret;
}

static int tps6586x_get_voltage_sel(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 val;
}

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_ops = {
	.list_voltage = tps6586x_list_voltage,
	.get_voltage_sel = tps6586x_get_voltage_sel,
	.set_voltage_sel = tps6586x_set_voltage_sel,

	.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, vreg, shift, nbits,		\
			   ereg0, ebit0, ereg1, ebit1)			\
	.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_REGULATOR_DVM_GOREG(goreg, gobit)			\
	.go_reg = TPS6586X_##goreg,					\
	.go_bit = (gobit),

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

#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits,			\
		     ereg0, ebit0, ereg1, ebit1, goreg, gobit)		\
{									\
	TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits,		\
			   ereg0, ebit0, ereg1, ebit1)			\
	TPS6586X_REGULATOR_DVM_GOREG(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, SUPPLYV2, 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, V4, 7, V4, 7),
	TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
	TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),

	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;

	if (ri->enable_reg[0] == ri->enable_reg[1] &&
	    ri->enable_bit[0] == ri->enable_bit[1])
			return 0;

	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 & (1 << 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 & (1 << 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 int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
{
	struct device *parent = pdev->dev.parent;
	struct regulator_init_data *p = pdev->dev.platform_data;
	struct tps6586x_settings *setting = p->driver_data;
	uint8_t reg;

	if (setting == NULL)
		return 0;

	if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
		return 0;

	/* only SM0 and SM1 can have the slew rate settings */
	switch (pdev->id) {
	case TPS6586X_ID_SM_0:
		reg = TPS6586X_SM0SL;
		break;
	case TPS6586X_ID_SM_1:
		reg = TPS6586X_SM1SL;
		break;
	default:
		dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
		return -EINVAL;
	}

	return tps6586x_write(parent, reg,
			setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
}

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_config config = { };
	struct regulator_dev *rdev;
	int id = pdev->id;
	int err;

	dev_dbg(&pdev->dev, "Probing regulator %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;

	config.dev = &pdev->dev;
	config.of_node = pdev->dev.of_node;
	config.init_data = pdev->dev.platform_data;
	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 tps6586x_regulator_set_slew_rate(pdev);
}

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	16	#include <linux/kernel.h>
65602c32	17	#include <linux/module.h>
49610235 MR	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
e1816235	78	static int tps6586x_list_voltage(struct regulator_dev *rdev, unsigned selector)
49610235 MR	79	{
49610235 MR	80	struct tps6586x_regulator *info = rdev_get_drvdata(rdev);
51579137 AL	81	int rid = rdev_get_id(rdev);
	82
	83	/* LDO0 has minimal voltage 1.2V rather than 1.25V */
	84	if ((rid == TPS6586X_ID_LDO_0) && (selector == 0))
	85	return (info->voltages[0] - 50) * 1000;
49610235	86
4cc2e393	87	return info->voltages[selector] * 1000;
49610235 MR	88	}
	89
	90
eed06517 AL	91	static int tps6586x_set_voltage_sel(struct regulator_dev *rdev,
eed06517 AL	92	unsigned selector)
49610235	93	{
eed06517 AL	94	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	95	struct device *parent = to_tps6586x_dev(rdev);
	96	int ret, val, rid = rdev_get_id(rdev);
49610235 MR	97	uint8_t mask;
49610235 MR	98
eed06517 AL	99	val = selector << ri->volt_shift;
eed06517 AL	100	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
3a93f2a9	101
eed06517 AL	102	ret = tps6586x_update(parent, ri->volt_reg, val, mask);
	103	if (ret)
	104	return ret;
49610235	105
eed06517 AL	106	/* Update go bit for DVM regulators */
	107	switch (rid) {
	108	case TPS6586X_ID_LDO_2:
	109	case TPS6586X_ID_LDO_4:
	110	case TPS6586X_ID_SM_0:
	111	case TPS6586X_ID_SM_1:
	112	ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
	113	break;
49610235	114	}
eed06517	115	return ret;
49610235 MR	116	}
49610235 MR	117
44a7cdab	118	static int tps6586x_get_voltage_sel(struct regulator_dev *rdev)
49610235 MR	119	{
	120	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	121	struct device *parent = to_tps6586x_dev(rdev);
	122	uint8_t val, mask;
	123	int ret;
	124
	125	ret = tps6586x_read(parent, ri->volt_reg, &val);
	126	if (ret)
	127	return ret;
	128
	129	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	130	val = (val & mask) >> ri->volt_shift;
	131
327531ba	132	if (val >= ri->desc.n_voltages)
49610235 MR	133	BUG();
49610235 MR	134
44a7cdab	135	return val;
49610235 MR	136	}
49610235 MR	137
49610235 MR	138	static int tps6586x_regulator_enable(struct regulator_dev *rdev)
	139	{
	140	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	141	struct device *parent = to_tps6586x_dev(rdev);
	142
	143	return tps6586x_set_bits(parent, ri->enable_reg[0],
	144	1 << ri->enable_bit[0]);
	145	}
	146
	147	static int tps6586x_regulator_disable(struct regulator_dev *rdev)
	148	{
	149	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	150	struct device *parent = to_tps6586x_dev(rdev);
	151
	152	return tps6586x_clr_bits(parent, ri->enable_reg[0],
	153	1 << ri->enable_bit[0]);
	154	}
	155
	156	static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
	157	{
	158	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	159	struct device *parent = to_tps6586x_dev(rdev);
	160	uint8_t reg_val;
	161	int ret;
	162
	163	ret = tps6586x_read(parent, ri->enable_reg[0], &reg_val);
	164	if (ret)
	165	return ret;
	166
	167	return !!(reg_val & (1 << ri->enable_bit[0]));
	168	}
	169
e1816235 AL	170	static struct regulator_ops tps6586x_regulator_ops = {
e1816235 AL	171	.list_voltage = tps6586x_list_voltage,
44a7cdab	172	.get_voltage_sel = tps6586x_get_voltage_sel,
eed06517	173	.set_voltage_sel = tps6586x_set_voltage_sel,
49610235 MR	174
	175	.is_enabled = tps6586x_regulator_is_enabled,
	176	.enable = tps6586x_regulator_enable,
	177	.disable = tps6586x_regulator_disable,
	178	};
	179
	180	static int tps6586x_ldo_voltages[] = {
	181	1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
	182	};
	183
	184	static int tps6586x_ldo4_voltages[] = {
	185	1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
	186	1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
	187	2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
	188	2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
	189	};
	190
4cc2e393 GK	191	static int tps6586x_sm2_voltages[] = {
	192	3000, 3050, 3100, 3150, 3200, 3250, 3300, 3350,
	193	3400, 3450, 3500, 3550, 3600, 3650, 3700, 3750,
	194	3800, 3850, 3900, 3950, 4000, 4050, 4100, 4150,
	195	4200, 4250, 4300, 4350, 4400, 4450, 4500, 4550,
	196	};
	197
49610235 MR	198	static int tps6586x_dvm_voltages[] = {
	199	725, 750, 775, 800, 825, 850, 875, 900,
	200	925, 950, 975, 1000, 1025, 1050, 1075, 1100,
	201	1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
	202	1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
	203	};
	204
e1816235	205	#define TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits, \
64db657b	206	ereg0, ebit0, ereg1, ebit1) \
49610235 MR	207	.desc = { \
49610235 MR	208	.name = "REG-" #_id, \
e1816235	209	.ops = &tps6586x_regulator_ops, \
49610235 MR	210	.type = REGULATOR_VOLTAGE, \
	211	.id = TPS6586X_ID_##_id, \
	212	.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
	213	.owner = THIS_MODULE, \
	214	}, \
	215	.volt_reg = TPS6586X_##vreg, \
	216	.volt_shift = (shift), \
	217	.volt_nbits = (nbits), \
	218	.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
	219	.enable_bit[0] = (ebit0), \
	220	.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
	221	.enable_bit[1] = (ebit1), \
64db657b DH	222	.voltages = tps6586x_##vdata##_voltages,
	223
	224	#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	225	.go_reg = TPS6586X_##goreg, \
	226	.go_bit = (gobit),
49610235 MR	227
	228	#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits, \
	229	ereg0, ebit0, ereg1, ebit1) \
64db657b	230	{ \
e1816235	231	TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits, \
64db657b DH	232	ereg0, ebit0, ereg1, ebit1) \
64db657b DH	233	}
49610235 MR	234
	235	#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits, \
	236	ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
64db657b	237	{ \
e1816235	238	TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits, \
64db657b DH	239	ereg0, ebit0, ereg1, ebit1) \
	240	TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	241	}
49610235 MR	242
	243	static struct tps6586x_regulator tps6586x_regulator[] = {
	244	TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
	245	TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
	246	TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
	247	TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	248	TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
1b39ed0c	249	TPS6586X_LDO(LDO_8, ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
49610235	250	TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
1b39ed0c	251	TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
49610235	252	TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
1b39ed0c	253	TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
49610235 MR	254
	255	TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
	256	TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
	257	TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
	258	TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
	259	};
	260
	261	/*
	262	* TPS6586X has 2 enable bits that are OR'ed to determine the actual
	263	* regulator state. Clearing one of this bits allows switching
	264	* regulator on and of with single register write.
	265	*/
	266	static inline int tps6586x_regulator_preinit(struct device *parent,
	267	struct tps6586x_regulator *ri)
	268	{
	269	uint8_t val1, val2;
	270	int ret;
	271
1dbcf35c DH	272	if (ri->enable_reg[0] == ri->enable_reg[1] &&
	273	ri->enable_bit[0] == ri->enable_bit[1])
	274	return 0;
	275
49610235 MR	276	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
	277	if (ret)
	278	return ret;
	279
	280	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
	281	if (ret)
	282	return ret;
	283
4f586707	284	if (!(val2 & (1 << ri->enable_bit[1])))
49610235 MR	285	return 0;
	286
	287	/*
	288	* The regulator is on, but it's enabled with the bit we don't
	289	* want to use, so we switch the enable bits
	290	*/
4f586707	291	if (!(val1 & (1 << ri->enable_bit[0]))) {
49610235 MR	292	ret = tps6586x_set_bits(parent, ri->enable_reg[0],
	293	1 << ri->enable_bit[0]);
	294	if (ret)
	295	return ret;
	296	}
	297
	298	return tps6586x_clr_bits(parent, ri->enable_reg[1],
	299	1 << ri->enable_bit[1]);
	300	}
	301
500c524a XX	302	static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
	303	{
	304	struct device *parent = pdev->dev.parent;
	305	struct regulator_init_data *p = pdev->dev.platform_data;
	306	struct tps6586x_settings *setting = p->driver_data;
	307	uint8_t reg;
	308
	309	if (setting == NULL)
	310	return 0;
	311
	312	if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
	313	return 0;
	314
	315	/* only SM0 and SM1 can have the slew rate settings */
	316	switch (pdev->id) {
	317	case TPS6586X_ID_SM_0:
	318	reg = TPS6586X_SM0SL;
	319	break;
	320	case TPS6586X_ID_SM_1:
	321	reg = TPS6586X_SM1SL;
	322	break;
	323	default:
	324	dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
	325	return -EINVAL;
	326	}
	327
	328	return tps6586x_write(parent, reg,
	329	setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
	330	}
	331
49610235 MR	332	static inline struct tps6586x_regulator *find_regulator_info(int id)
	333	{
	334	struct tps6586x_regulator *ri;
	335	int i;
	336
	337	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
	338	ri = &tps6586x_regulator[i];
	339	if (ri->desc.id == id)
	340	return ri;
	341	}
	342	return NULL;
	343	}
	344
	345	static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
	346	{
	347	struct tps6586x_regulator *ri = NULL;
c172708d	348	struct regulator_config config = { };
49610235 MR	349	struct regulator_dev *rdev;
	350	int id = pdev->id;
	351	int err;
	352
394ee3d5	353	dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
49610235 MR	354
	355	ri = find_regulator_info(id);
	356	if (ri == NULL) {
	357	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	358	return -EINVAL;
	359	}
	360
	361	err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
	362	if (err)
	363	return err;
	364
c172708d	365	config.dev = &pdev->dev;
62f6b087	366	config.of_node = pdev->dev.of_node;
c172708d MB	367	config.init_data = pdev->dev.platform_data;
	368	config.driver_data = ri;
	369
	370	rdev = regulator_register(&ri->desc, &config);
49610235 MR	371	if (IS_ERR(rdev)) {
	372	dev_err(&pdev->dev, "failed to register regulator %s\n",
	373	ri->desc.name);
	374	return PTR_ERR(rdev);
	375	}
	376
e7973c3c	377	platform_set_drvdata(pdev, rdev);
49610235	378
500c524a	379	return tps6586x_regulator_set_slew_rate(pdev);
49610235 MR	380	}
	381
	382	static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
	383	{
e7973c3c AL	384	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	385
	386	regulator_unregister(rdev);
49610235 MR	387	return 0;
	388	}
	389
	390	static struct platform_driver tps6586x_regulator_driver = {
	391	.driver = {
	392	.name = "tps6586x-regulator",
	393	.owner = THIS_MODULE,
	394	},
	395	.probe = tps6586x_regulator_probe,
	396	.remove = __devexit_p(tps6586x_regulator_remove),
	397	};
	398
	399	static int __init tps6586x_regulator_init(void)
	400	{
	401	return platform_driver_register(&tps6586x_regulator_driver);
	402	}
	403	subsys_initcall(tps6586x_regulator_init);
	404
	405	static void __exit tps6586x_regulator_exit(void)
	406	{
	407	platform_driver_unregister(&tps6586x_regulator_driver);
	408	}
	409	module_exit(tps6586x_regulator_exit);
	410
	411	MODULE_LICENSE("GPL");
	412	MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
	413	MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
	414	MODULE_ALIAS("platform:tps6586x-regulator");