[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 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 << (ffs(rdev->desc->vsel_mask) - 1);
	mask = rdev->desc->vsel_mask;

	ret = tps6586x_update(parent, rdev->desc->vsel_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 struct regulator_ops tps6586x_regulator_ops = {
	.list_voltage = regulator_list_voltage_table,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = tps6586x_set_voltage_sel,

	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
};

static struct regulator_ops tps6586x_sys_regulator_ops = {
};

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,					\
		.enable_reg = TPS6586X_SUPPLY##ereg0,			\
		.enable_mask = 1 << (ebit0),				\
		.vsel_reg = TPS6586X_##vreg,				\
		.vsel_mask = ((1 << (nbits)) - 1) << (shift),		\
	},								\
	.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)			\
}

#define TPS6586X_SYS_REGULATOR()					\
{									\
	.desc	= {							\
		.supply_name = "sys",					\
		.name	= "REG-SYS",					\
		.ops	= &tps6586x_sys_regulator_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= TPS6586X_ID_SYS,				\
		.owner	= THIS_MODULE,					\
	},								\
}

static struct tps6586x_regulator tps6586x_regulator[] = {
	TPS6586X_SYS_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, "REG-SYS", 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, "REG-SYS", 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, "vin-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, "vin-sm0", dvm, SM0V1, 0, 5, ENA, 1,
					ENB, 1, VCC1, 2),
	TPS6586X_DVM(SM_1, "vin-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		= 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
49610235 MR	60	int enable_bit[2];
	61	int enable_reg[2];
	62
49610235 MR	63	/* for DVM regulators */
	64	int go_reg;
	65	int go_bit;
	66	};
	67
	68	static inline struct device to_tps6586x_dev(struct regulator_dev rdev)
	69	{
7c7fac30	70	return rdev_get_dev(rdev)->parent;
49610235 MR	71	}
49610235 MR	72
eed06517 AL	73	static int tps6586x_set_voltage_sel(struct regulator_dev *rdev,
eed06517 AL	74	unsigned selector)
49610235	75	{
eed06517 AL	76	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
	77	struct device *parent = to_tps6586x_dev(rdev);
	78	int ret, val, rid = rdev_get_id(rdev);
49610235 MR	79	uint8_t mask;
49610235 MR	80
7c7475c0 AL	81	val = selector << (ffs(rdev->desc->vsel_mask) - 1);
7c7475c0 AL	82	mask = rdev->desc->vsel_mask;
3a93f2a9	83
7c7475c0	84	ret = tps6586x_update(parent, rdev->desc->vsel_reg, val, mask);
eed06517 AL	85	if (ret)
eed06517 AL	86	return ret;
49610235	87
eed06517 AL	88	/* Update go bit for DVM regulators */
	89	switch (rid) {
	90	case TPS6586X_ID_LDO_2:
	91	case TPS6586X_ID_LDO_4:
	92	case TPS6586X_ID_SM_0:
	93	case TPS6586X_ID_SM_1:
	94	ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
	95	break;
49610235	96	}
eed06517	97	return ret;
49610235 MR	98	}
49610235 MR	99
e1816235	100	static struct regulator_ops tps6586x_regulator_ops = {
f4647037	101	.list_voltage = regulator_list_voltage_table,
7c7475c0	102	.get_voltage_sel = regulator_get_voltage_sel_regmap,
eed06517	103	.set_voltage_sel = tps6586x_set_voltage_sel,
49610235	104
7c7475c0 AL	105	.is_enabled = regulator_is_enabled_regmap,
	106	.enable = regulator_enable_regmap,
	107	.disable = regulator_disable_regmap,
49610235 MR	108	};
49610235 MR	109
9394b80c	110	static struct regulator_ops tps6586x_sys_regulator_ops = {
49610235 MR	111	};
49610235 MR	112
f4647037 AL	113	static const unsigned int tps6586x_ldo0_voltages[] = {
	114	1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
	115	};
	116
	117	static const unsigned int tps6586x_ldo4_voltages[] = {
	118	1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000,
	119	1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000,
	120	2100000, 2125000, 2150000, 2175000, 2200000, 2225000, 2250000, 2275000,
	121	2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000,
49610235 MR	122	};
49610235 MR	123
f4647037 AL	124	static const unsigned int tps6586x_ldo_voltages[] = {
f4647037 AL	125	1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
49610235 MR	126	};
49610235 MR	127
f4647037 AL	128	static const unsigned int tps6586x_sm2_voltages[] = {
	129	3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000,
	130	3400000, 3450000, 3500000, 3550000, 3600000, 3650000, 3700000, 3750000,
	131	3800000, 3850000, 3900000, 3950000, 4000000, 4050000, 4100000, 4150000,
	132	4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000,
4cc2e393 GK	133	};
4cc2e393 GK	134
f4647037 AL	135	static const unsigned int tps6586x_dvm_voltages[] = {
	136	725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
	137	925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
	138	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
	139	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
49610235 MR	140	};
49610235 MR	141
7c7fac30	142	#define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits, \
64db657b	143	ereg0, ebit0, ereg1, ebit1) \
49610235	144	.desc = { \
7c7fac30	145	.supply_name = _pin_name, \
49610235	146	.name = "REG-" #_id, \
e1816235	147	.ops = &tps6586x_regulator_ops, \
49610235 MR	148	.type = REGULATOR_VOLTAGE, \
	149	.id = TPS6586X_ID_##_id, \
	150	.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
f4647037	151	.volt_table = tps6586x_##vdata##_voltages, \
49610235	152	.owner = THIS_MODULE, \
7c7475c0 AL	153	.enable_reg = TPS6586X_SUPPLY##ereg0, \
	154	.enable_mask = 1 << (ebit0), \
	155	.vsel_reg = TPS6586X_##vreg, \
	156	.vsel_mask = ((1 << (nbits)) - 1) << (shift), \
49610235	157	}, \
49610235 MR	158	.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
	159	.enable_bit[0] = (ebit0), \
	160	.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
f4647037	161	.enable_bit[1] = (ebit1),
64db657b DH	162
	163	#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	164	.go_reg = TPS6586X_##goreg, \
	165	.go_bit = (gobit),
49610235	166
7c7fac30	167	#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
49610235	168	ereg0, ebit0, ereg1, ebit1) \
64db657b	169	{ \
7c7fac30	170	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \
64db657b DH	171	ereg0, ebit0, ereg1, ebit1) \
64db657b DH	172	}
49610235	173
7c7fac30	174	#define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits, \
49610235	175	ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
64db657b	176	{ \
7c7fac30	177	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \
64db657b DH	178	ereg0, ebit0, ereg1, ebit1) \
	179	TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
	180	}
49610235	181
9394b80c LD	182	#define TPS6586X_SYS_REGULATOR() \
	183	{ \
	184	.desc = { \
	185	.supply_name = "sys", \
	186	.name = "REG-SYS", \
	187	.ops = &tps6586x_sys_regulator_ops, \
	188	.type = REGULATOR_VOLTAGE, \
	189	.id = TPS6586X_ID_SYS, \
	190	.owner = THIS_MODULE, \
	191	}, \
	192	}
	193
49610235	194	static struct tps6586x_regulator tps6586x_regulator[] = {
9394b80c	195	TPS6586X_SYS_REGULATOR(),
7c7fac30 LD	196	TPS6586X_LDO(LDO_0, "vinldo01", ldo0, SUPPLYV1, 5, 3, ENC, 0, END, 0),
7c7fac30 LD	197	TPS6586X_LDO(LDO_3, "vinldo23", ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
9394b80c	198	TPS6586X_LDO(LDO_5, "REG-SYS", ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
7c7fac30 LD	199	TPS6586X_LDO(LDO_6, "vinldo678", ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
	200	TPS6586X_LDO(LDO_7, "vinldo678", ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
	201	TPS6586X_LDO(LDO_8, "vinldo678", ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
	202	TPS6586X_LDO(LDO_9, "vinldo9", ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
9394b80c	203	TPS6586X_LDO(LDO_RTC, "REG-SYS", ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
7c7fac30	204	TPS6586X_LDO(LDO_1, "vinldo01", dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
7f852e05	205	TPS6586X_LDO(SM_2, "vin-sm2", sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
7c7fac30 LD	206
	207	TPS6586X_DVM(LDO_2, "vinldo23", dvm, LDO2BV1, 0, 5, ENA, 3,
	208	ENB, 3, VCC2, 6),
	209	TPS6586X_DVM(LDO_4, "vinldo4", ldo4, LDO4V1, 0, 5, ENC, 3,
	210	END, 3, VCC1, 6),
7f852e05 LD	211	TPS6586X_DVM(SM_0, "vin-sm0", dvm, SM0V1, 0, 5, ENA, 1,
	212	ENB, 1, VCC1, 2),
	213	TPS6586X_DVM(SM_1, "vin-sm1", dvm, SM1V1, 0, 5, ENA, 0,
	214	ENB, 0, VCC1, 0),
49610235 MR	215	};
	216
	217	/*
	218	* TPS6586X has 2 enable bits that are OR'ed to determine the actual
	219	* regulator state. Clearing one of this bits allows switching
	220	* regulator on and of with single register write.
	221	*/
	222	static inline int tps6586x_regulator_preinit(struct device *parent,
	223	struct tps6586x_regulator *ri)
	224	{
	225	uint8_t val1, val2;
	226	int ret;
	227
1dbcf35c DH	228	if (ri->enable_reg[0] == ri->enable_reg[1] &&
	229	ri->enable_bit[0] == ri->enable_bit[1])
	230	return 0;
	231
49610235 MR	232	ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
	233	if (ret)
	234	return ret;
	235
	236	ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
	237	if (ret)
	238	return ret;
	239
4f586707	240	if (!(val2 & (1 << ri->enable_bit[1])))
49610235 MR	241	return 0;
	242
	243	/*
	244	* The regulator is on, but it's enabled with the bit we don't
	245	* want to use, so we switch the enable bits
	246	*/
4f586707	247	if (!(val1 & (1 << ri->enable_bit[0]))) {
49610235 MR	248	ret = tps6586x_set_bits(parent, ri->enable_reg[0],
	249	1 << ri->enable_bit[0]);
	250	if (ret)
	251	return ret;
	252	}
	253
	254	return tps6586x_clr_bits(parent, ri->enable_reg[1],
	255	1 << ri->enable_bit[1]);
	256	}
	257
500c524a XX	258	static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
	259	{
	260	struct device *parent = pdev->dev.parent;
	261	struct regulator_init_data *p = pdev->dev.platform_data;
	262	struct tps6586x_settings *setting = p->driver_data;
	263	uint8_t reg;
	264
	265	if (setting == NULL)
	266	return 0;
	267
	268	if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
	269	return 0;
	270
	271	/* only SM0 and SM1 can have the slew rate settings */
	272	switch (pdev->id) {
	273	case TPS6586X_ID_SM_0:
	274	reg = TPS6586X_SM0SL;
	275	break;
	276	case TPS6586X_ID_SM_1:
	277	reg = TPS6586X_SM1SL;
	278	break;
	279	default:
	280	dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
	281	return -EINVAL;
	282	}
	283
	284	return tps6586x_write(parent, reg,
	285	setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
	286	}
	287
49610235 MR	288	static inline struct tps6586x_regulator *find_regulator_info(int id)
	289	{
	290	struct tps6586x_regulator *ri;
	291	int i;
	292
	293	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
	294	ri = &tps6586x_regulator[i];
	295	if (ri->desc.id == id)
	296	return ri;
	297	}
	298	return NULL;
	299	}
	300
	301	static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
	302	{
	303	struct tps6586x_regulator *ri = NULL;
c172708d	304	struct regulator_config config = { };
49610235 MR	305	struct regulator_dev *rdev;
	306	int id = pdev->id;
	307	int err;
	308
394ee3d5	309	dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
49610235 MR	310
	311	ri = find_regulator_info(id);
	312	if (ri == NULL) {
	313	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	314	return -EINVAL;
	315	}
	316
	317	err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
	318	if (err)
	319	return err;
	320
7c7fac30	321	config.dev = pdev->dev.parent;
62f6b087	322	config.of_node = pdev->dev.of_node;
c172708d MB	323	config.init_data = pdev->dev.platform_data;
	324	config.driver_data = ri;
	325
	326	rdev = regulator_register(&ri->desc, &config);
49610235 MR	327	if (IS_ERR(rdev)) {
	328	dev_err(&pdev->dev, "failed to register regulator %s\n",
	329	ri->desc.name);
	330	return PTR_ERR(rdev);
	331	}
	332
e7973c3c	333	platform_set_drvdata(pdev, rdev);
49610235	334
500c524a	335	return tps6586x_regulator_set_slew_rate(pdev);
49610235 MR	336	}
	337
	338	static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
	339	{
e7973c3c AL	340	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	341
	342	regulator_unregister(rdev);
49610235 MR	343	return 0;
	344	}
	345
	346	static struct platform_driver tps6586x_regulator_driver = {
	347	.driver = {
	348	.name = "tps6586x-regulator",
	349	.owner = THIS_MODULE,
	350	},
	351	.probe = tps6586x_regulator_probe,
5eb9f2b9	352	.remove = tps6586x_regulator_remove,
49610235 MR	353	};
	354
	355	static int __init tps6586x_regulator_init(void)
	356	{
	357	return platform_driver_register(&tps6586x_regulator_driver);
	358	}
	359	subsys_initcall(tps6586x_regulator_init);
	360
	361	static void __exit tps6586x_regulator_exit(void)
	362	{
	363	platform_driver_unregister(&tps6586x_regulator_driver);
	364	}
	365	module_exit(tps6586x_regulator_exit);
	366
	367	MODULE_LICENSE("GPL");
	368	MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
	369	MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
	370	MODULE_ALIAS("platform:tps6586x-regulator");