[GitHub/mt8127/android_kernel_alcatel_ttab.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_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,
				      unsigned *selector)
{
	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) {

			*selector = val;

			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, unsigned *selector)
{
	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,
					  selector);
}

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_dvm_set_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV, unsigned *selector)
{
	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,
					 selector);
	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_sel = tps6586x_get_voltage_sel,
	.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_sel = tps6586x_get_voltage_sel,
	.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)			\
	.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, ldo_ops, 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, dvm_ops, 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_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;

	rdev = regulator_register(&ri->desc, &pdev->dev,
				  pdev->dev.platform_data, ri, NULL);
	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
	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
4cc2e393	83	return info->voltages[selector] * 1000;
49610235 MR	84	}
	85
	86
	87	static int __tps6586x_ldo_set_voltage(struct device *parent,
	88	struct tps6586x_regulator *ri,
3a93f2a9 MB	89	int min_uV, int max_uV,
3a93f2a9 MB	90	unsigned *selector)
49610235 MR	91	{
	92	int val, uV;
	93	uint8_t mask;
	94
	95	for (val = 0; val < ri->desc.n_voltages; val++) {
	96	uV = ri->voltages[val] * 1000;
	97
	98	/* LDO0 has minimal voltage 1.2 rather than 1.25 */
	99	if (ri->desc.id == TPS6586X_ID_LDO_0 && val == 0)
	100	uV -= 50 * 1000;
	101
	102	/* use the first in-range value */
	103	if (min_uV <= uV && uV <= max_uV) {
	104
3a93f2a9 MB	105	*selector = val;
3a93f2a9 MB	106
49610235 MR	107	val <<= ri->volt_shift;
	108	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	109
	110	return tps6586x_update(parent, ri->volt_reg, val, mask);
	111	}
	112	}
	113
	114	return -EINVAL;
	115	}
	116
	117	static int tps6586x_ldo_set_voltage(struct regulator_dev *rdev,
3a93f2a9	118	int min_uV, int max_uV, unsigned *selector)
49610235 MR	119	{
	120	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	121	struct device *parent = to_tps6586x_dev(rdev);
	122
3a93f2a9 MB	123	return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV,
3a93f2a9 MB	124	selector);
49610235 MR	125	}
49610235 MR	126
44a7cdab	127	static int tps6586x_get_voltage_sel(struct regulator_dev *rdev)
49610235 MR	128	{
	129	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	130	struct device *parent = to_tps6586x_dev(rdev);
	131	uint8_t val, mask;
	132	int ret;
	133
	134	ret = tps6586x_read(parent, ri->volt_reg, &val);
	135	if (ret)
	136	return ret;
	137
	138	mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
	139	val = (val & mask) >> ri->volt_shift;
	140
327531ba	141	if (val >= ri->desc.n_voltages)
49610235 MR	142	BUG();
49610235 MR	143
44a7cdab	144	return val;
49610235 MR	145	}
	146
	147	static int tps6586x_dvm_set_voltage(struct regulator_dev *rdev,
3a93f2a9	148	int min_uV, int max_uV, unsigned *selector)
49610235 MR	149	{
	150	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	151	struct device *parent = to_tps6586x_dev(rdev);
	152	int ret;
	153
3a93f2a9 MB	154	ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV,
3a93f2a9 MB	155	selector);
49610235 MR	156	if (ret)
	157	return ret;
	158
938b4592	159	return tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
49610235 MR	160	}
	161
	162	static int tps6586x_regulator_enable(struct regulator_dev *rdev)
	163	{
	164	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	165	struct device *parent = to_tps6586x_dev(rdev);
	166
	167	return tps6586x_set_bits(parent, ri->enable_reg[0],
	168	1 << ri->enable_bit[0]);
	169	}
	170
	171	static int tps6586x_regulator_disable(struct regulator_dev *rdev)
	172	{
	173	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	174	struct device *parent = to_tps6586x_dev(rdev);
	175
	176	return tps6586x_clr_bits(parent, ri->enable_reg[0],
	177	1 << ri->enable_bit[0]);
	178	}
	179
	180	static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
	181	{
	182	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	183	struct device *parent = to_tps6586x_dev(rdev);
	184	uint8_t reg_val;
	185	int ret;
	186
	187	ret = tps6586x_read(parent, ri->enable_reg[0], &reg_val);
	188	if (ret)
	189	return ret;
	190
	191	return !!(reg_val & (1 << ri->enable_bit[0]));
	192	}
	193
	194	static struct regulator_ops tps6586x_regulator_ldo_ops = {
	195	.list_voltage = tps6586x_ldo_list_voltage,
44a7cdab	196	.get_voltage_sel = tps6586x_get_voltage_sel,
49610235 MR	197	.set_voltage = tps6586x_ldo_set_voltage,
	198
	199	.is_enabled = tps6586x_regulator_is_enabled,
	200	.enable = tps6586x_regulator_enable,
	201	.disable = tps6586x_regulator_disable,
	202	};
	203
	204	static struct regulator_ops tps6586x_regulator_dvm_ops = {
	205	.list_voltage = tps6586x_ldo_list_voltage,
44a7cdab	206	.get_voltage_sel = tps6586x_get_voltage_sel,
49610235 MR	207	.set_voltage = tps6586x_dvm_set_voltage,
	208
	209	.is_enabled = tps6586x_regulator_is_enabled,
	210	.enable = tps6586x_regulator_enable,
	211	.disable = tps6586x_regulator_disable,
	212	};
	213
	214	static int tps6586x_ldo_voltages[] = {
	215	1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
	216	};
	217
	218	static int tps6586x_ldo4_voltages[] = {
	219	1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
	220	1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
	221	2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
	222	2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
	223	};
	224
4cc2e393 GK	225	static int tps6586x_sm2_voltages[] = {
	226	3000, 3050, 3100, 3150, 3200, 3250, 3300, 3350,
	227	3400, 3450, 3500, 3550, 3600, 3650, 3700, 3750,
	228	3800, 3850, 3900, 3950, 4000, 4050, 4100, 4150,
	229	4200, 4250, 4300, 4350, 4400, 4450, 4500, 4550,
	230	};
	231
49610235 MR	232	static int tps6586x_dvm_voltages[] = {
	233	725, 750, 775, 800, 825, 850, 875, 900,
	234	925, 950, 975, 1000, 1025, 1050, 1075, 1100,
	235	1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
	236	1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
	237	};
	238
	239	#define TPS6586X_REGULATOR(_id, vdata, _ops, vreg, shift, nbits, \
64db657b	240	ereg0, ebit0, ereg1, ebit1) \
49610235 MR	241	.desc = { \
	242	.name = "REG-" #_id, \
	243	.ops = &tps6586x_regulator_##_ops, \
	244	.type = REGULATOR_VOLTAGE, \
	245	.id = TPS6586X_ID_##_id, \
	246	.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
	247	.owner = THIS_MODULE, \
	248	}, \
	249	.volt_reg = TPS6586X_##vreg, \
	250	.volt_shift = (shift), \
	251	.volt_nbits = (nbits), \
	252	.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
	253	.enable_bit[0] = (ebit0), \
	254	.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
	255	.enable_bit[1] = (ebit1), \
64db657b DH	256	.voltages = tps6586x_##vdata##_voltages,
	257
	258	#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	259	.go_reg = TPS6586X_##goreg, \
	260	.go_bit = (gobit),
49610235 MR	261
	262	#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits, \
	263	ereg0, ebit0, ereg1, ebit1) \
64db657b	264	{ \
49610235	265	TPS6586X_REGULATOR(_id, vdata, ldo_ops, vreg, shift, nbits, \
64db657b DH	266	ereg0, ebit0, ereg1, ebit1) \
64db657b DH	267	}
49610235 MR	268
	269	#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits, \
	270	ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
64db657b	271	{ \
49610235	272	TPS6586X_REGULATOR(_id, vdata, dvm_ops, vreg, shift, nbits, \
64db657b DH	273	ereg0, ebit0, ereg1, ebit1) \
	274	TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	275	}
49610235 MR	276
	277	static struct tps6586x_regulator tps6586x_regulator[] = {
	278	TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
	279	TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
	280	TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
	281	TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	282	TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
1b39ed0c	283	TPS6586X_LDO(LDO_8, ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
49610235	284	TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
1b39ed0c	285	TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
49610235	286	TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
1b39ed0c	287	TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
49610235 MR	288
	289	TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
	290	TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
	291	TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
	292	TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
	293	};
	294
	295	/*
	296	* TPS6586X has 2 enable bits that are OR'ed to determine the actual
	297	* regulator state. Clearing one of this bits allows switching
	298	* regulator on and of with single register write.
	299	*/
	300	static inline int tps6586x_regulator_preinit(struct device *parent,
	301	struct tps6586x_regulator *ri)
	302	{
	303	uint8_t val1, val2;
	304	int ret;
	305
1dbcf35c DH	306	if (ri->enable_reg[0] == ri->enable_reg[1] &&
	307	ri->enable_bit[0] == ri->enable_bit[1])
	308	return 0;
	309
49610235 MR	310	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
	311	if (ret)
	312	return ret;
	313
	314	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
	315	if (ret)
	316	return ret;
	317
4f586707	318	if (!(val2 & (1 << ri->enable_bit[1])))
49610235 MR	319	return 0;
	320
	321	/*
	322	* The regulator is on, but it's enabled with the bit we don't
	323	* want to use, so we switch the enable bits
	324	*/
4f586707	325	if (!(val1 & (1 << ri->enable_bit[0]))) {
49610235 MR	326	ret = tps6586x_set_bits(parent, ri->enable_reg[0],
	327	1 << ri->enable_bit[0]);
	328	if (ret)
	329	return ret;
	330	}
	331
	332	return tps6586x_clr_bits(parent, ri->enable_reg[1],
	333	1 << ri->enable_bit[1]);
	334	}
	335
500c524a XX	336	static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
	337	{
	338	struct device *parent = pdev->dev.parent;
	339	struct regulator_init_data *p = pdev->dev.platform_data;
	340	struct tps6586x_settings *setting = p->driver_data;
	341	uint8_t reg;
	342
	343	if (setting == NULL)
	344	return 0;
	345
	346	if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
	347	return 0;
	348
	349	/* only SM0 and SM1 can have the slew rate settings */
	350	switch (pdev->id) {
	351	case TPS6586X_ID_SM_0:
	352	reg = TPS6586X_SM0SL;
	353	break;
	354	case TPS6586X_ID_SM_1:
	355	reg = TPS6586X_SM1SL;
	356	break;
	357	default:
	358	dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
	359	return -EINVAL;
	360	}
	361
	362	return tps6586x_write(parent, reg,
	363	setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
	364	}
	365
49610235 MR	366	static inline struct tps6586x_regulator *find_regulator_info(int id)
	367	{
	368	struct tps6586x_regulator *ri;
	369	int i;
	370
	371	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
	372	ri = &tps6586x_regulator[i];
	373	if (ri->desc.id == id)
	374	return ri;
	375	}
	376	return NULL;
	377	}
	378
	379	static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
	380	{
	381	struct tps6586x_regulator *ri = NULL;
	382	struct regulator_dev *rdev;
	383	int id = pdev->id;
	384	int err;
	385
394ee3d5	386	dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
49610235 MR	387
	388	ri = find_regulator_info(id);
	389	if (ri == NULL) {
	390	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	391	return -EINVAL;
	392	}
	393
	394	err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
	395	if (err)
	396	return err;
	397
	398	rdev = regulator_register(&ri->desc, &pdev->dev,
2c043bcb	399	pdev->dev.platform_data, ri, NULL);
49610235 MR	400	if (IS_ERR(rdev)) {
	401	dev_err(&pdev->dev, "failed to register regulator %s\n",
	402	ri->desc.name);
	403	return PTR_ERR(rdev);
	404	}
	405
e7973c3c	406	platform_set_drvdata(pdev, rdev);
49610235	407
500c524a	408	return tps6586x_regulator_set_slew_rate(pdev);
49610235 MR	409	}
	410
	411	static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
	412	{
e7973c3c AL	413	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	414
	415	regulator_unregister(rdev);
49610235 MR	416	return 0;
	417	}
	418
	419	static struct platform_driver tps6586x_regulator_driver = {
	420	.driver = {
	421	.name = "tps6586x-regulator",
	422	.owner = THIS_MODULE,
	423	},
	424	.probe = tps6586x_regulator_probe,
	425	.remove = __devexit_p(tps6586x_regulator_remove),
	426	};
	427
	428	static int __init tps6586x_regulator_init(void)
	429	{
	430	return platform_driver_register(&tps6586x_regulator_driver);
	431	}
	432	subsys_initcall(tps6586x_regulator_init);
	433
	434	static void __exit tps6586x_regulator_exit(void)
	435	{
	436	platform_driver_unregister(&tps6586x_regulator_driver);
	437	}
	438	module_exit(tps6586x_regulator_exit);
	439
	440	MODULE_LICENSE("GPL");
	441	MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
	442	MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
	443	MODULE_ALIAS("platform:tps6586x-regulator");