[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];

	/* 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;
}

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 = regulator_list_voltage_table,
	.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 const unsigned int tps6586x_ldo0_voltages[] = {
	1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
};

static const unsigned int tps6586x_ldo4_voltages[] = {
	1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000,
	1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000,
	2100000, 2125000, 2150000, 2175000, 2200000, 2225000, 2250000, 2275000,
	2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000,
};

static const unsigned int tps6586x_ldo_voltages[] = {
	1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
};

static const unsigned int tps6586x_sm2_voltages[] = {
	3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000,
	3400000, 3450000, 3500000, 3550000, 3600000, 3650000, 3700000, 3750000,
	3800000, 3850000, 3900000, 3950000, 4000000, 4050000, 4100000, 4150000,
	4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000,
};

static const unsigned int tps6586x_dvm_voltages[] = {
	 725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
	 925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
};

#define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits,	\
			   ereg0, ebit0, ereg1, ebit1)			\
	.desc	= {							\
		.supply_name = _pin_name,				\
		.name	= "REG-" #_id,					\
		.ops	= &tps6586x_regulator_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= TPS6586X_ID_##_id,				\
		.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages),	\
		.volt_table = 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),

#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit)			\
	.go_reg = TPS6586X_##goreg,					\
	.go_bit = (gobit),

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

#define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits,		\
		     ereg0, ebit0, ereg1, ebit1, goreg, gobit)		\
{									\
	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits,	\
			   ereg0, ebit0, ereg1, ebit1)			\
	TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit)			\
}

static struct tps6586x_regulator tps6586x_regulator[] = {
	TPS6586X_LDO(LDO_0, "vinldo01", ldo0, SUPPLYV1, 5, 3, ENC, 0, END, 0),
	TPS6586X_LDO(LDO_3, "vinldo23", ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
	TPS6586X_LDO(LDO_5, NULL, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
	TPS6586X_LDO(LDO_6, "vinldo678", ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	TPS6586X_LDO(LDO_7, "vinldo678", ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
	TPS6586X_LDO(LDO_8, "vinldo678", ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
	TPS6586X_LDO(LDO_9, "vinldo9", ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
	TPS6586X_LDO(LDO_RTC, NULL, ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
	TPS6586X_LDO(LDO_1, "vinldo01", dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
	TPS6586X_LDO(SM_2, "sm2", sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),

	TPS6586X_DVM(LDO_2, "vinldo23", dvm, LDO2BV1, 0, 5, ENA, 3,
					ENB, 3, VCC2, 6),
	TPS6586X_DVM(LDO_4, "vinldo4", ldo4, LDO4V1, 0, 5, ENC, 3,
					END, 3, VCC1, 6),
	TPS6586X_DVM(SM_0, "sm0", dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
	TPS6586X_DVM(SM_1, "sm1", 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.parent;
	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
49610235 MR	66	/* for DVM regulators */
	67	int go_reg;
	68	int go_bit;
	69	};
	70
	71	static inline struct device to_tps6586x_dev(struct regulator_dev rdev)
	72	{
7c7fac30	73	return rdev_get_dev(rdev)->parent;
49610235 MR	74	}
49610235 MR	75
eed06517 AL	76	static int tps6586x_set_voltage_sel(struct regulator_dev *rdev,
eed06517 AL	77	unsigned selector)
49610235	78	{
eed06517 AL	79	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	80	struct device *parent = to_tps6586x_dev(rdev);
	81	int ret, val, rid = rdev_get_id(rdev);
49610235 MR	82	uint8_t mask;
49610235 MR	83
eed06517 AL	84	val = selector << ri->volt_shift;
eed06517 AL	85	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
3a93f2a9	86
eed06517 AL	87	ret = tps6586x_update(parent, ri->volt_reg, val, mask);
	88	if (ret)
	89	return ret;
49610235	90
eed06517 AL	91	/* Update go bit for DVM regulators */
	92	switch (rid) {
	93	case TPS6586X_ID_LDO_2:
	94	case TPS6586X_ID_LDO_4:
	95	case TPS6586X_ID_SM_0:
	96	case TPS6586X_ID_SM_1:
	97	ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
	98	break;
49610235	99	}
eed06517	100	return ret;
49610235 MR	101	}
49610235 MR	102
44a7cdab	103	static int tps6586x_get_voltage_sel(struct regulator_dev *rdev)
49610235 MR	104	{
	105	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	106	struct device *parent = to_tps6586x_dev(rdev);
	107	uint8_t val, mask;
	108	int ret;
	109
	110	ret = tps6586x_read(parent, ri->volt_reg, &val);
	111	if (ret)
	112	return ret;
	113
	114	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	115	val = (val & mask) >> ri->volt_shift;
	116
327531ba	117	if (val >= ri->desc.n_voltages)
49610235 MR	118	BUG();
49610235 MR	119
44a7cdab	120	return val;
49610235 MR	121	}
49610235 MR	122
49610235 MR	123	static int tps6586x_regulator_enable(struct regulator_dev *rdev)
	124	{
	125	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	126	struct device *parent = to_tps6586x_dev(rdev);
	127
	128	return tps6586x_set_bits(parent, ri->enable_reg[0],
	129	1 << ri->enable_bit[0]);
	130	}
	131
	132	static int tps6586x_regulator_disable(struct regulator_dev *rdev)
	133	{
	134	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	135	struct device *parent = to_tps6586x_dev(rdev);
	136
	137	return tps6586x_clr_bits(parent, ri->enable_reg[0],
	138	1 << ri->enable_bit[0]);
	139	}
	140
	141	static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
	142	{
	143	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	144	struct device *parent = to_tps6586x_dev(rdev);
	145	uint8_t reg_val;
	146	int ret;
	147
	148	ret = tps6586x_read(parent, ri->enable_reg[0], &reg_val);
	149	if (ret)
	150	return ret;
	151
	152	return !!(reg_val & (1 << ri->enable_bit[0]));
	153	}
	154
e1816235	155	static struct regulator_ops tps6586x_regulator_ops = {
f4647037	156	.list_voltage = regulator_list_voltage_table,
44a7cdab	157	.get_voltage_sel = tps6586x_get_voltage_sel,
eed06517	158	.set_voltage_sel = tps6586x_set_voltage_sel,
49610235 MR	159
	160	.is_enabled = tps6586x_regulator_is_enabled,
	161	.enable = tps6586x_regulator_enable,
	162	.disable = tps6586x_regulator_disable,
	163	};
	164
f4647037 AL	165	static const unsigned int tps6586x_ldo0_voltages[] = {
	166	1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
	167	};
	168
	169	static const unsigned int tps6586x_ldo4_voltages[] = {
	170	1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000,
	171	1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000,
	172	2100000, 2125000, 2150000, 2175000, 2200000, 2225000, 2250000, 2275000,
	173	2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000,
49610235 MR	174	};
49610235 MR	175
f4647037 AL	176	static const unsigned int tps6586x_ldo_voltages[] = {
f4647037 AL	177	1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
49610235 MR	178	};
49610235 MR	179
f4647037 AL	180	static const unsigned int tps6586x_sm2_voltages[] = {
	181	3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000,
	182	3400000, 3450000, 3500000, 3550000, 3600000, 3650000, 3700000, 3750000,
	183	3800000, 3850000, 3900000, 3950000, 4000000, 4050000, 4100000, 4150000,
	184	4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000,
4cc2e393 GK	185	};
4cc2e393 GK	186
f4647037 AL	187	static const unsigned int tps6586x_dvm_voltages[] = {
	188	725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
	189	925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
	190	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
	191	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
49610235 MR	192	};
49610235 MR	193
7c7fac30	194	#define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits, \
64db657b	195	ereg0, ebit0, ereg1, ebit1) \
49610235	196	.desc = { \
7c7fac30	197	.supply_name = _pin_name, \
49610235	198	.name = "REG-" #_id, \
e1816235	199	.ops = &tps6586x_regulator_ops, \
49610235 MR	200	.type = REGULATOR_VOLTAGE, \
	201	.id = TPS6586X_ID_##_id, \
	202	.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
f4647037	203	.volt_table = tps6586x_##vdata##_voltages, \
49610235 MR	204	.owner = THIS_MODULE, \
	205	}, \
	206	.volt_reg = TPS6586X_##vreg, \
	207	.volt_shift = (shift), \
	208	.volt_nbits = (nbits), \
	209	.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
	210	.enable_bit[0] = (ebit0), \
	211	.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
f4647037	212	.enable_bit[1] = (ebit1),
64db657b DH	213
	214	#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	215	.go_reg = TPS6586X_##goreg, \
	216	.go_bit = (gobit),
49610235	217
7c7fac30	218	#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
49610235	219	ereg0, ebit0, ereg1, ebit1) \
64db657b	220	{ \
7c7fac30	221	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \
64db657b DH	222	ereg0, ebit0, ereg1, ebit1) \
64db657b DH	223	}
49610235	224
7c7fac30	225	#define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits, \
49610235	226	ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
64db657b	227	{ \
7c7fac30	228	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \
64db657b DH	229	ereg0, ebit0, ereg1, ebit1) \
	230	TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	231	}
49610235 MR	232
49610235 MR	233	static struct tps6586x_regulator tps6586x_regulator[] = {
7c7fac30 LD	234	TPS6586X_LDO(LDO_0, "vinldo01", ldo0, SUPPLYV1, 5, 3, ENC, 0, END, 0),
	235	TPS6586X_LDO(LDO_3, "vinldo23", ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
	236	TPS6586X_LDO(LDO_5, NULL, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
	237	TPS6586X_LDO(LDO_6, "vinldo678", ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	238	TPS6586X_LDO(LDO_7, "vinldo678", ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
	239	TPS6586X_LDO(LDO_8, "vinldo678", ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
	240	TPS6586X_LDO(LDO_9, "vinldo9", ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
	241	TPS6586X_LDO(LDO_RTC, NULL, ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
	242	TPS6586X_LDO(LDO_1, "vinldo01", dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
	243	TPS6586X_LDO(SM_2, "sm2", sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
	244
	245	TPS6586X_DVM(LDO_2, "vinldo23", dvm, LDO2BV1, 0, 5, ENA, 3,
	246	ENB, 3, VCC2, 6),
	247	TPS6586X_DVM(LDO_4, "vinldo4", ldo4, LDO4V1, 0, 5, ENC, 3,
	248	END, 3, VCC1, 6),
	249	TPS6586X_DVM(SM_0, "sm0", dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
	250	TPS6586X_DVM(SM_1, "sm1", dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
49610235 MR	251	};
	252
	253	/*
	254	* TPS6586X has 2 enable bits that are OR'ed to determine the actual
	255	* regulator state. Clearing one of this bits allows switching
	256	* regulator on and of with single register write.
	257	*/
	258	static inline int tps6586x_regulator_preinit(struct device *parent,
	259	struct tps6586x_regulator *ri)
	260	{
	261	uint8_t val1, val2;
	262	int ret;
	263
1dbcf35c DH	264	if (ri->enable_reg[0] == ri->enable_reg[1] &&
	265	ri->enable_bit[0] == ri->enable_bit[1])
	266	return 0;
	267
49610235 MR	268	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
	269	if (ret)
	270	return ret;
	271
	272	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
	273	if (ret)
	274	return ret;
	275
4f586707	276	if (!(val2 & (1 << ri->enable_bit[1])))
49610235 MR	277	return 0;
	278
	279	/*
	280	* The regulator is on, but it's enabled with the bit we don't
	281	* want to use, so we switch the enable bits
	282	*/
4f586707	283	if (!(val1 & (1 << ri->enable_bit[0]))) {
49610235 MR	284	ret = tps6586x_set_bits(parent, ri->enable_reg[0],
	285	1 << ri->enable_bit[0]);
	286	if (ret)
	287	return ret;
	288	}
	289
	290	return tps6586x_clr_bits(parent, ri->enable_reg[1],
	291	1 << ri->enable_bit[1]);
	292	}
	293
500c524a XX	294	static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
	295	{
	296	struct device *parent = pdev->dev.parent;
	297	struct regulator_init_data *p = pdev->dev.platform_data;
	298	struct tps6586x_settings *setting = p->driver_data;
	299	uint8_t reg;
	300
	301	if (setting == NULL)
	302	return 0;
	303
	304	if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
	305	return 0;
	306
	307	/* only SM0 and SM1 can have the slew rate settings */
	308	switch (pdev->id) {
	309	case TPS6586X_ID_SM_0:
	310	reg = TPS6586X_SM0SL;
	311	break;
	312	case TPS6586X_ID_SM_1:
	313	reg = TPS6586X_SM1SL;
	314	break;
	315	default:
	316	dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
	317	return -EINVAL;
	318	}
	319
	320	return tps6586x_write(parent, reg,
	321	setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
	322	}
	323
49610235 MR	324	static inline struct tps6586x_regulator *find_regulator_info(int id)
	325	{
	326	struct tps6586x_regulator *ri;
	327	int i;
	328
	329	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
	330	ri = &tps6586x_regulator[i];
	331	if (ri->desc.id == id)
	332	return ri;
	333	}
	334	return NULL;
	335	}
	336
	337	static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
	338	{
	339	struct tps6586x_regulator *ri = NULL;
c172708d	340	struct regulator_config config = { };
49610235 MR	341	struct regulator_dev *rdev;
	342	int id = pdev->id;
	343	int err;
	344
394ee3d5	345	dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
49610235 MR	346
	347	ri = find_regulator_info(id);
	348	if (ri == NULL) {
	349	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	350	return -EINVAL;
	351	}
	352
	353	err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
	354	if (err)
	355	return err;
	356
7c7fac30	357	config.dev = pdev->dev.parent;
62f6b087	358	config.of_node = pdev->dev.of_node;
c172708d MB	359	config.init_data = pdev->dev.platform_data;
	360	config.driver_data = ri;
	361
	362	rdev = regulator_register(&ri->desc, &config);
49610235 MR	363	if (IS_ERR(rdev)) {
	364	dev_err(&pdev->dev, "failed to register regulator %s\n",
	365	ri->desc.name);
	366	return PTR_ERR(rdev);
	367	}
	368
e7973c3c	369	platform_set_drvdata(pdev, rdev);
49610235	370
500c524a	371	return tps6586x_regulator_set_slew_rate(pdev);
49610235 MR	372	}
	373
	374	static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
	375	{
e7973c3c AL	376	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	377
	378	regulator_unregister(rdev);
49610235 MR	379	return 0;
	380	}
	381
	382	static struct platform_driver tps6586x_regulator_driver = {
	383	.driver = {
	384	.name = "tps6586x-regulator",
	385	.owner = THIS_MODULE,
	386	},
	387	.probe = tps6586x_regulator_probe,
	388	.remove = __devexit_p(tps6586x_regulator_remove),
	389	};
	390
	391	static int __init tps6586x_regulator_init(void)
	392	{
	393	return platform_driver_register(&tps6586x_regulator_driver);
	394	}
	395	subsys_initcall(tps6586x_regulator_init);
	396
	397	static void __exit tps6586x_regulator_exit(void)
	398	{
	399	platform_driver_unregister(&tps6586x_regulator_driver);
	400	}
	401	module_exit(tps6586x_regulator_exit);
	402
	403	MODULE_LICENSE("GPL");
	404	MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
	405	MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
	406	MODULE_ALIAS("platform:tps6586x-regulator");