[linux-block.git] / drivers / regulator / da9052-regulator.c

/*
* da9052-regulator.c: Regulator driver for DA9052
*
* Copyright(c) 2011 Dialog Semiconductor Ltd.
*
* Author: David Dajun Chen <dchen@diasemi.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#ifdef CONFIG_OF
#include <linux/of.h>
#include <linux/regulator/of_regulator.h>
#endif

#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>
#include <linux/mfd/da9052/pdata.h>

/* Buck step size */
#define DA9052_BUCK_PERI_3uV_STEP		100000
#define DA9052_BUCK_PERI_REG_MAP_UPTO_3uV	24
#define DA9052_CONST_3uV			3000000

#define DA9052_MIN_UA		0
#define DA9052_MAX_UA		3
#define DA9052_CURRENT_RANGE	4

/* Bit masks */
#define DA9052_BUCK_ILIM_MASK_EVEN	0x0c
#define DA9052_BUCK_ILIM_MASK_ODD	0xc0

/* DA9052 REGULATOR IDs */
#define DA9052_ID_BUCK1		0
#define DA9052_ID_BUCK2		1
#define DA9052_ID_BUCK3		2
#define DA9052_ID_BUCK4		3
#define DA9052_ID_LDO1		4
#define DA9052_ID_LDO2		5
#define DA9052_ID_LDO3		6
#define DA9052_ID_LDO4		7
#define DA9052_ID_LDO5		8
#define DA9052_ID_LDO6		9
#define DA9052_ID_LDO7		10
#define DA9052_ID_LDO8		11
#define DA9052_ID_LDO9		12
#define DA9052_ID_LDO10		13

static const u32 da9052_current_limits[3][4] = {
	{700000, 800000, 1000000, 1200000},	/* DA9052-BC BUCKs */
	{1600000, 2000000, 2400000, 3000000},	/* DA9053-AA/Bx BUCK-CORE */
	{800000, 1000000, 1200000, 1500000},	/* DA9053-AA/Bx BUCK-PRO,
						 * BUCK-MEM and BUCK-PERI
						*/
};

struct da9052_regulator_info {
	struct regulator_desc reg_desc;
	int step_uV;
	int min_uV;
	int max_uV;
};

struct da9052_regulator {
	struct da9052 *da9052;
	struct da9052_regulator_info *info;
	struct regulator_dev *rdev;
};

static int verify_range(struct da9052_regulator_info *info,
			 int min_uV, int max_uV)
{
	if (min_uV > info->max_uV || max_uV < info->min_uV)
		return -EINVAL;

	return 0;
}

static int da9052_dcdc_get_current_limit(struct regulator_dev *rdev)
{
	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	int offset = rdev_get_id(rdev);
	int ret, row = 2;

	ret = da9052_reg_read(regulator->da9052, DA9052_BUCKA_REG + offset/2);
	if (ret < 0)
		return ret;

	/* Determine the even or odd position of the buck current limit
	 * register field
	*/
	if (offset % 2 == 0)
		ret = (ret & DA9052_BUCK_ILIM_MASK_EVEN) >> 2;
	else
		ret = (ret & DA9052_BUCK_ILIM_MASK_ODD) >> 6;

	/* Select the appropriate current limit range */
	if (regulator->da9052->chip_id == DA9052)
		row = 0;
	else if (offset == 0)
		row = 1;

	return da9052_current_limits[row][ret];
}

static int da9052_dcdc_set_current_limit(struct regulator_dev *rdev, int min_uA,
					  int max_uA)
{
	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	int offset = rdev_get_id(rdev);
	int reg_val = 0;
	int i, row = 2;

	/* Select the appropriate current limit range */
	if (regulator->da9052->chip_id == DA9052)
		row = 0;
	else if (offset == 0)
		row = 1;

	for (i = DA9052_CURRENT_RANGE - 1; i >= 0; i--) {
		if ((min_uA <= da9052_current_limits[row][i]) &&
		    (da9052_current_limits[row][i] <= max_uA)) {
			reg_val = i;
			break;
		}
	}

	if (i < 0)
		return -EINVAL;

	/* Determine the even or odd position of the buck current limit
	 * register field
	*/
	if (offset % 2 == 0)
		return da9052_reg_update(regulator->da9052,
					 DA9052_BUCKA_REG + offset/2,
					 DA9052_BUCK_ILIM_MASK_EVEN,
					 reg_val << 2);
	else
		return da9052_reg_update(regulator->da9052,
					 DA9052_BUCKA_REG + offset/2,
					 DA9052_BUCK_ILIM_MASK_ODD,
					 reg_val << 6);
}

static int da9052_list_voltage(struct regulator_dev *rdev,
				unsigned int selector)
{
	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9052_regulator_info *info = regulator->info;
	int id = rdev_get_id(rdev);
	int volt_uV;

	if ((id == DA9052_ID_BUCK4) && (regulator->da9052->chip_id == DA9052)
		&& (selector >= DA9052_BUCK_PERI_REG_MAP_UPTO_3uV)) {
		volt_uV = ((DA9052_BUCK_PERI_REG_MAP_UPTO_3uV * info->step_uV)
			  + info->min_uV);
		volt_uV += (selector - DA9052_BUCK_PERI_REG_MAP_UPTO_3uV)
				    * (DA9052_BUCK_PERI_3uV_STEP);
	} else {
		volt_uV = (selector * info->step_uV) + info->min_uV;
	}

	if (volt_uV > info->max_uV)
		return -EINVAL;

	return volt_uV;
}

static int da9052_map_voltage(struct regulator_dev *rdev,
			      int min_uV, int max_uV)
{
	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	struct da9052_regulator_info *info = regulator->info;
	int id = rdev_get_id(rdev);
	int ret, sel;

	ret = verify_range(info, min_uV, max_uV);
	if (ret < 0)
		return ret;

	if (min_uV < info->min_uV)
		min_uV = info->min_uV;

	if ((id == DA9052_ID_BUCK4) && (regulator->da9052->chip_id == DA9052)
		&& (min_uV >= DA9052_CONST_3uV)) {
			sel = DA9052_BUCK_PERI_REG_MAP_UPTO_3uV +
			      DIV_ROUND_UP(min_uV - DA9052_CONST_3uV,
					   DA9052_BUCK_PERI_3uV_STEP);
	} else {
		sel = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
	}

	ret = da9052_list_voltage(rdev, sel);
	if (ret < 0)
		return ret;

	return sel;
}

static struct regulator_ops da9052_dcdc_ops = {
	.get_current_limit = da9052_dcdc_get_current_limit,
	.set_current_limit = da9052_dcdc_set_current_limit,

	.list_voltage = da9052_list_voltage,
	.map_voltage = da9052_map_voltage,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
};

static struct regulator_ops da9052_ldo_ops = {
	.list_voltage = da9052_list_voltage,
	.map_voltage = da9052_map_voltage,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
};

#define DA9052_LDO(_id, step, min, max, sbits, ebits, abits) \
{\
	.reg_desc = {\
		.name = #_id,\
		.ops = &da9052_ldo_ops,\
		.type = REGULATOR_VOLTAGE,\
		.id = DA9052_ID_##_id,\
		.n_voltages = (max - min) / step + 1, \
		.owner = THIS_MODULE,\
		.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
		.vsel_mask = (1 << (sbits)) - 1,\
		.apply_reg = DA9052_SUPPLY_REG, \
		.apply_bit = (abits), \
		.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
		.enable_mask = 1 << (ebits),\
	},\
	.min_uV = (min) * 1000,\
	.max_uV = (max) * 1000,\
	.step_uV = (step) * 1000,\
}

#define DA9052_DCDC(_id, step, min, max, sbits, ebits, abits) \
{\
	.reg_desc = {\
		.name = #_id,\
		.ops = &da9052_dcdc_ops,\
		.type = REGULATOR_VOLTAGE,\
		.id = DA9052_ID_##_id,\
		.n_voltages = (max - min) / step + 1, \
		.owner = THIS_MODULE,\
		.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
		.vsel_mask = (1 << (sbits)) - 1,\
		.apply_reg = DA9052_SUPPLY_REG, \
		.apply_bit = (abits), \
		.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
		.enable_mask = 1 << (ebits),\
	},\
	.min_uV = (min) * 1000,\
	.max_uV = (max) * 1000,\
	.step_uV = (step) * 1000,\
}

static struct da9052_regulator_info da9052_regulator_info[] = {
	DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
	DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
	DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO),
	DA9052_DCDC(BUCK4, 50, 1800, 3600, 5, 6, 0),
	DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0),
	DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
	DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
	DA9052_LDO(LDO4, 25, 1725, 3300, 6, 6, 0),
	DA9052_LDO(LDO5, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO6, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO7, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO8, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO9, 50, 1250, 3650, 6, 6, 0),
	DA9052_LDO(LDO10, 50, 1200, 3600, 6, 6, 0),
};

static struct da9052_regulator_info da9053_regulator_info[] = {
	DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
	DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
	DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO),
	DA9052_DCDC(BUCK4, 25, 925, 2500, 6, 6, 0),
	DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0),
	DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
	DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
	DA9052_LDO(LDO4, 25, 1725, 3300, 6, 6, 0),
	DA9052_LDO(LDO5, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO6, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO7, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO8, 50, 1200, 3600, 6, 6, 0),
	DA9052_LDO(LDO9, 50, 1250, 3650, 6, 6, 0),
	DA9052_LDO(LDO10, 50, 1200, 3600, 6, 6, 0),
};

static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id,
								 int id)
{
	struct da9052_regulator_info *info;
	int i;

	switch (chip_id) {
	case DA9052:
		for (i = 0; i < ARRAY_SIZE(da9052_regulator_info); i++) {
			info = &da9052_regulator_info[i];
			if (info->reg_desc.id == id)
				return info;
		}
		break;
	case DA9053_AA:
	case DA9053_BA:
	case DA9053_BB:
		for (i = 0; i < ARRAY_SIZE(da9053_regulator_info); i++) {
			info = &da9053_regulator_info[i];
			if (info->reg_desc.id == id)
				return info;
		}
		break;
	}

	return NULL;
}

static int da9052_regulator_probe(struct platform_device *pdev)
{
	struct regulator_config config = { };
	struct da9052_regulator *regulator;
	struct da9052 *da9052;
	struct da9052_pdata *pdata;

	regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9052_regulator),
				 GFP_KERNEL);
	if (!regulator)
		return -ENOMEM;

	da9052 = dev_get_drvdata(pdev->dev.parent);
	pdata = dev_get_platdata(da9052->dev);
	regulator->da9052 = da9052;

	regulator->info = find_regulator_info(regulator->da9052->chip_id,
					      pdev->id);
	if (regulator->info == NULL) {
		dev_err(&pdev->dev, "invalid regulator ID specified\n");
		return -EINVAL;
	}

	config.dev = &pdev->dev;
	config.driver_data = regulator;
	config.regmap = da9052->regmap;
	if (pdata && pdata->regulators) {
		config.init_data = pdata->regulators[pdev->id];
	} else {
#ifdef CONFIG_OF
		struct device_node *nproot, *np;

		nproot = of_node_get(da9052->dev->of_node);
		if (!nproot)
			return -ENODEV;

		nproot = of_find_node_by_name(nproot, "regulators");
		if (!nproot)
			return -ENODEV;

		for_each_child_of_node(nproot, np) {
			if (!of_node_cmp(np->name,
					 regulator->info->reg_desc.name)) {
				config.init_data = of_get_regulator_init_data(
					&pdev->dev, np);
				config.of_node = np;
				break;
			}
		}
		of_node_put(nproot);
#endif
	}

	regulator->rdev = regulator_register(&regulator->info->reg_desc,
					     &config);
	if (IS_ERR(regulator->rdev)) {
		dev_err(&pdev->dev, "failed to register regulator %s\n",
			regulator->info->reg_desc.name);
		return PTR_ERR(regulator->rdev);
	}

	platform_set_drvdata(pdev, regulator);

	return 0;
}

static int da9052_regulator_remove(struct platform_device *pdev)
{
	struct da9052_regulator *regulator = platform_get_drvdata(pdev);

	regulator_unregister(regulator->rdev);
	return 0;
}

static struct platform_driver da9052_regulator_driver = {
	.probe = da9052_regulator_probe,
	.remove = da9052_regulator_remove,
	.driver = {
		.name = "da9052-regulator",
		.owner = THIS_MODULE,
	},
};

static int __init da9052_regulator_init(void)
{
	return platform_driver_register(&da9052_regulator_driver);
}
subsys_initcall(da9052_regulator_init);

static void __exit da9052_regulator_exit(void)
{
	platform_driver_unregister(&da9052_regulator_driver);
}
module_exit(da9052_regulator_exit);

MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9052 PMIC");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:da9052-regulator");
Commit	Line	Data
08bf1c0a AJ	1	/*
	2	* da9052-regulator.c: Regulator driver for DA9052
	3	*
	4	* Copyright(c) 2011 Dialog Semiconductor Ltd.
	5	*
	6	* Author: David Dajun Chen <dchen@diasemi.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/moduleparam.h>
	17	#include <linux/init.h>
	18	#include <linux/err.h>
	19	#include <linux/platform_device.h>
	20	#include <linux/regulator/driver.h>
	21	#include <linux/regulator/machine.h>
88c84c14	22	#ifdef CONFIG_OF
cd22a965	23	#include <linux/of.h>
88c84c14 YCLP	24	#include <linux/regulator/of_regulator.h>
88c84c14 YCLP	25	#endif
08bf1c0a AJ	26
	27	#include <linux/mfd/da9052/da9052.h>
	28	#include <linux/mfd/da9052/reg.h>
	29	#include <linux/mfd/da9052/pdata.h>
	30
	31	/* Buck step size */
	32	#define DA9052_BUCK_PERI_3uV_STEP 100000
	33	#define DA9052_BUCK_PERI_REG_MAP_UPTO_3uV 24
	34	#define DA9052_CONST_3uV 3000000
	35
	36	#define DA9052_MIN_UA 0
	37	#define DA9052_MAX_UA 3
	38	#define DA9052_CURRENT_RANGE 4
	39
	40	/* Bit masks */
	41	#define DA9052_BUCK_ILIM_MASK_EVEN 0x0c
	42	#define DA9052_BUCK_ILIM_MASK_ODD 0xc0
	43
9210f05b AL	44	/* DA9052 REGULATOR IDs */
	45	#define DA9052_ID_BUCK1 0
	46	#define DA9052_ID_BUCK2 1
	47	#define DA9052_ID_BUCK3 2
	48	#define DA9052_ID_BUCK4 3
	49	#define DA9052_ID_LDO1 4
	50	#define DA9052_ID_LDO2 5
	51	#define DA9052_ID_LDO3 6
	52	#define DA9052_ID_LDO4 7
	53	#define DA9052_ID_LDO5 8
	54	#define DA9052_ID_LDO6 9
	55	#define DA9052_ID_LDO7 10
	56	#define DA9052_ID_LDO8 11
	57	#define DA9052_ID_LDO9 12
	58	#define DA9052_ID_LDO10 13
	59
08bf1c0a AJ	60	static const u32 da9052_current_limits[3][4] = {
	61	{700000, 800000, 1000000, 1200000}, /* DA9052-BC BUCKs */
	62	{1600000, 2000000, 2400000, 3000000}, /* DA9053-AA/Bx BUCK-CORE */
	63	{800000, 1000000, 1200000, 1500000}, /* DA9053-AA/Bx BUCK-PRO,
	64	* BUCK-MEM and BUCK-PERI
	65	*/
	66	};
	67
	68	struct da9052_regulator_info {
	69	struct regulator_desc reg_desc;
	70	int step_uV;
	71	int min_uV;
	72	int max_uV;
08bf1c0a AJ	73	};
	74
	75	struct da9052_regulator {
	76	struct da9052 *da9052;
	77	struct da9052_regulator_info *info;
	78	struct regulator_dev *rdev;
	79	};
	80
	81	static int verify_range(struct da9052_regulator_info *info,
	82	int min_uV, int max_uV)
	83	{
	84	if (min_uV > info->max_uV \|\| max_uV < info->min_uV)
	85	return -EINVAL;
	86
	87	return 0;
	88	}
	89
08bf1c0a AJ	90	static int da9052_dcdc_get_current_limit(struct regulator_dev *rdev)
	91	{
	92	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	93	int offset = rdev_get_id(rdev);
	94	int ret, row = 2;
	95
	96	ret = da9052_reg_read(regulator->da9052, DA9052_BUCKA_REG + offset/2);
	97	if (ret < 0)
	98	return ret;
	99
	100	/* Determine the even or odd position of the buck current limit
	101	* register field
	102	*/
	103	if (offset % 2 == 0)
	104	ret = (ret & DA9052_BUCK_ILIM_MASK_EVEN) >> 2;
	105	else
	106	ret = (ret & DA9052_BUCK_ILIM_MASK_ODD) >> 6;
	107
	108	/* Select the appropriate current limit range */
	109	if (regulator->da9052->chip_id == DA9052)
	110	row = 0;
	111	else if (offset == 0)
	112	row = 1;
	113
	114	return da9052_current_limits[row][ret];
	115	}
	116
	117	static int da9052_dcdc_set_current_limit(struct regulator_dev *rdev, int min_uA,
	118	int max_uA)
	119	{
	120	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	121	int offset = rdev_get_id(rdev);
	122	int reg_val = 0;
	123	int i, row = 2;
	124
	125	/* Select the appropriate current limit range */
	126	if (regulator->da9052->chip_id == DA9052)
	127	row = 0;
	128	else if (offset == 0)
	129	row = 1;
	130
19d23c21	131	for (i = DA9052_CURRENT_RANGE - 1; i >= 0; i--) {
1e369bcd AL	132	if ((min_uA <= da9052_current_limits[row][i]) &&
1e369bcd AL	133	(da9052_current_limits[row][i] <= max_uA)) {
08bf1c0a AJ	134	reg_val = i;
	135	break;
	136	}
	137	}
	138
1e369bcd AL	139	if (i < 0)
	140	return -EINVAL;
	141
08bf1c0a AJ	142	/* Determine the even or odd position of the buck current limit
	143	* register field
	144	*/
	145	if (offset % 2 == 0)
	146	return da9052_reg_update(regulator->da9052,
	147	DA9052_BUCKA_REG + offset/2,
	148	DA9052_BUCK_ILIM_MASK_EVEN,
	149	reg_val << 2);
	150	else
	151	return da9052_reg_update(regulator->da9052,
	152	DA9052_BUCKA_REG + offset/2,
	153	DA9052_BUCK_ILIM_MASK_ODD,
	154	reg_val << 6);
	155	}
	156
08bf1c0a AJ	157	static int da9052_list_voltage(struct regulator_dev *rdev,
	158	unsigned int selector)
	159	{
	160	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	161	struct da9052_regulator_info *info = regulator->info;
0ec446ea	162	int id = rdev_get_id(rdev);
08bf1c0a AJ	163	int volt_uV;
08bf1c0a AJ	164
0ec446ea AL	165	if ((id == DA9052_ID_BUCK4) && (regulator->da9052->chip_id == DA9052)
	166	&& (selector >= DA9052_BUCK_PERI_REG_MAP_UPTO_3uV)) {
	167	volt_uV = ((DA9052_BUCK_PERI_REG_MAP_UPTO_3uV * info->step_uV)
	168	+ info->min_uV);
	169	volt_uV += (selector - DA9052_BUCK_PERI_REG_MAP_UPTO_3uV)
	170	* (DA9052_BUCK_PERI_3uV_STEP);
	171	} else {
	172	volt_uV = (selector * info->step_uV) + info->min_uV;
	173	}
08bf1c0a AJ	174
	175	if (volt_uV > info->max_uV)
	176	return -EINVAL;
	177
	178	return volt_uV;
	179	}
	180
4923b48b AL	181	static int da9052_map_voltage(struct regulator_dev *rdev,
4923b48b AL	182	int min_uV, int max_uV)
08bf1c0a AJ	183	{
	184	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
	185	struct da9052_regulator_info *info = regulator->info;
0ec446ea	186	int id = rdev_get_id(rdev);
4923b48b	187	int ret, sel;
08bf1c0a AJ	188
	189	ret = verify_range(info, min_uV, max_uV);
	190	if (ret < 0)
	191	return ret;
	192
	193	if (min_uV < info->min_uV)
	194	min_uV = info->min_uV;
	195
0ec446ea AL	196	if ((id == DA9052_ID_BUCK4) && (regulator->da9052->chip_id == DA9052)
0ec446ea AL	197	&& (min_uV >= DA9052_CONST_3uV)) {
4923b48b AL	198	sel = DA9052_BUCK_PERI_REG_MAP_UPTO_3uV +
	199	DIV_ROUND_UP(min_uV - DA9052_CONST_3uV,
	200	DA9052_BUCK_PERI_3uV_STEP);
0ec446ea	201	} else {
4923b48b	202	sel = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
0ec446ea	203	}
08bf1c0a	204
4923b48b	205	ret = da9052_list_voltage(rdev, sel);
08bf1c0a AJ	206	if (ret < 0)
	207	return ret;
	208
4923b48b AL	209	return sel;
	210	}
	211
08bf1c0a	212	static struct regulator_ops da9052_dcdc_ops = {
08bf1c0a AJ	213	.get_current_limit = da9052_dcdc_get_current_limit,
	214	.set_current_limit = da9052_dcdc_set_current_limit,
	215
	216	.list_voltage = da9052_list_voltage,
4923b48b	217	.map_voltage = da9052_map_voltage,
09812bc4	218	.get_voltage_sel = regulator_get_voltage_sel_regmap,
68f75060	219	.set_voltage_sel = regulator_set_voltage_sel_regmap,
0d481f74 AL	220	.is_enabled = regulator_is_enabled_regmap,
	221	.enable = regulator_enable_regmap,
	222	.disable = regulator_disable_regmap,
08bf1c0a AJ	223	};
08bf1c0a AJ	224
08bf1c0a	225	static struct regulator_ops da9052_ldo_ops = {
08bf1c0a	226	.list_voltage = da9052_list_voltage,
4923b48b	227	.map_voltage = da9052_map_voltage,
09812bc4	228	.get_voltage_sel = regulator_get_voltage_sel_regmap,
68f75060	229	.set_voltage_sel = regulator_set_voltage_sel_regmap,
0d481f74 AL	230	.is_enabled = regulator_is_enabled_regmap,
	231	.enable = regulator_enable_regmap,
	232	.disable = regulator_disable_regmap,
08bf1c0a AJ	233	};
08bf1c0a AJ	234
08bf1c0a AJ	235	#define DA9052_LDO(_id, step, min, max, sbits, ebits, abits) \
	236	{\
	237	.reg_desc = {\
9210f05b	238	.name = #_id,\
08bf1c0a AJ	239	.ops = &da9052_ldo_ops,\
08bf1c0a AJ	240	.type = REGULATOR_VOLTAGE,\
9210f05b	241	.id = DA9052_ID_##_id,\
7b957654	242	.n_voltages = (max - min) / step + 1, \
08bf1c0a	243	.owner = THIS_MODULE,\
09812bc4 AL	244	.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
09812bc4 AL	245	.vsel_mask = (1 << (sbits)) - 1,\
68f75060 AL	246	.apply_reg = DA9052_SUPPLY_REG, \
68f75060 AL	247	.apply_bit = (abits), \
0d481f74 AL	248	.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
0d481f74 AL	249	.enable_mask = 1 << (ebits),\
08bf1c0a AJ	250	},\
	251	.min_uV = (min) * 1000,\
	252	.max_uV = (max) * 1000,\
	253	.step_uV = (step) * 1000,\
08bf1c0a AJ	254	}
	255
	256	#define DA9052_DCDC(_id, step, min, max, sbits, ebits, abits) \
	257	{\
	258	.reg_desc = {\
9210f05b	259	.name = #_id,\
08bf1c0a AJ	260	.ops = &da9052_dcdc_ops,\
08bf1c0a AJ	261	.type = REGULATOR_VOLTAGE,\
9210f05b	262	.id = DA9052_ID_##_id,\
7b957654	263	.n_voltages = (max - min) / step + 1, \
08bf1c0a	264	.owner = THIS_MODULE,\
09812bc4 AL	265	.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
09812bc4 AL	266	.vsel_mask = (1 << (sbits)) - 1,\
68f75060 AL	267	.apply_reg = DA9052_SUPPLY_REG, \
68f75060 AL	268	.apply_bit = (abits), \
0d481f74 AL	269	.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
0d481f74 AL	270	.enable_mask = 1 << (ebits),\
08bf1c0a AJ	271	},\
	272	.min_uV = (min) * 1000,\
	273	.max_uV = (max) * 1000,\
	274	.step_uV = (step) * 1000,\
08bf1c0a AJ	275	}
08bf1c0a AJ	276
6242eae9	277	static struct da9052_regulator_info da9052_regulator_info[] = {
9210f05b AL	278	DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
	279	DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
	280	DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO),
0ec446ea	281	DA9052_DCDC(BUCK4, 50, 1800, 3600, 5, 6, 0),
9210f05b	282	DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0),
0ec446ea AL	283	DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
0ec446ea AL	284	DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
9210f05b AL	285	DA9052_LDO(LDO4, 25, 1725, 3300, 6, 6, 0),
	286	DA9052_LDO(LDO5, 50, 1200, 3600, 6, 6, 0),
	287	DA9052_LDO(LDO6, 50, 1200, 3600, 6, 6, 0),
	288	DA9052_LDO(LDO7, 50, 1200, 3600, 6, 6, 0),
	289	DA9052_LDO(LDO8, 50, 1200, 3600, 6, 6, 0),
	290	DA9052_LDO(LDO9, 50, 1250, 3650, 6, 6, 0),
	291	DA9052_LDO(LDO10, 50, 1200, 3600, 6, 6, 0),
08bf1c0a AJ	292	};
08bf1c0a AJ	293
6242eae9	294	static struct da9052_regulator_info da9053_regulator_info[] = {
9210f05b AL	295	DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO),
	296	DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO),
	297	DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO),
0ec446ea	298	DA9052_DCDC(BUCK4, 25, 925, 2500, 6, 6, 0),
9210f05b	299	DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0),
0ec446ea AL	300	DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO),
0ec446ea AL	301	DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO),
9210f05b AL	302	DA9052_LDO(LDO4, 25, 1725, 3300, 6, 6, 0),
	303	DA9052_LDO(LDO5, 50, 1200, 3600, 6, 6, 0),
	304	DA9052_LDO(LDO6, 50, 1200, 3600, 6, 6, 0),
	305	DA9052_LDO(LDO7, 50, 1200, 3600, 6, 6, 0),
	306	DA9052_LDO(LDO8, 50, 1200, 3600, 6, 6, 0),
	307	DA9052_LDO(LDO9, 50, 1250, 3650, 6, 6, 0),
	308	DA9052_LDO(LDO10, 50, 1200, 3600, 6, 6, 0),
08bf1c0a AJ	309	};
	310
	311	static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id,
	312	int id)
	313	{
	314	struct da9052_regulator_info *info;
	315	int i;
	316
984b5a6b AJ	317	switch (chip_id) {
984b5a6b AJ	318	case DA9052:
08bf1c0a AJ	319	for (i = 0; i < ARRAY_SIZE(da9052_regulator_info); i++) {
	320	info = &da9052_regulator_info[i];
	321	if (info->reg_desc.id == id)
	322	return info;
	323	}
984b5a6b AJ	324	break;
	325	case DA9053_AA:
	326	case DA9053_BA:
	327	case DA9053_BB:
08bf1c0a AJ	328	for (i = 0; i < ARRAY_SIZE(da9053_regulator_info); i++) {
	329	info = &da9053_regulator_info[i];
	330	if (info->reg_desc.id == id)
	331	return info;
	332	}
984b5a6b	333	break;
08bf1c0a AJ	334	}
	335
	336	return NULL;
	337	}
	338
a5023574	339	static int da9052_regulator_probe(struct platform_device *pdev)
08bf1c0a	340	{
c172708d	341	struct regulator_config config = { };
08bf1c0a AJ	342	struct da9052_regulator *regulator;
	343	struct da9052 *da9052;
	344	struct da9052_pdata *pdata;
08bf1c0a	345
984b5a6b AJ	346	regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9052_regulator),
984b5a6b AJ	347	GFP_KERNEL);
08bf1c0a AJ	348	if (!regulator)
	349	return -ENOMEM;
	350
	351	da9052 = dev_get_drvdata(pdev->dev.parent);
dff91d0b	352	pdata = dev_get_platdata(da9052->dev);
08bf1c0a AJ	353	regulator->da9052 = da9052;
	354
	355	regulator->info = find_regulator_info(regulator->da9052->chip_id,
	356	pdev->id);
	357	if (regulator->info == NULL) {
	358	dev_err(&pdev->dev, "invalid regulator ID specified\n");
7eb6444f	359	return -EINVAL;
08bf1c0a	360	}
c172708d MB	361
c172708d MB	362	config.dev = &pdev->dev;
c172708d	363	config.driver_data = regulator;
0d481f74	364	config.regmap = da9052->regmap;
88c84c14 YCLP	365	if (pdata && pdata->regulators) {
	366	config.init_data = pdata->regulators[pdev->id];
	367	} else {
	368	#ifdef CONFIG_OF
c92f5dd2	369	struct device_node nproot, np;
88c84c14	370
c92f5dd2	371	nproot = of_node_get(da9052->dev->of_node);
88c84c14 YCLP	372	if (!nproot)
	373	return -ENODEV;
	374
	375	nproot = of_find_node_by_name(nproot, "regulators");
	376	if (!nproot)
	377	return -ENODEV;
	378
b86bbddd	379	for_each_child_of_node(nproot, np) {
88c84c14 YCLP	380	if (!of_node_cmp(np->name,
	381	regulator->info->reg_desc.name)) {
	382	config.init_data = of_get_regulator_init_data(
	383	&pdev->dev, np);
e76b9cc7	384	config.of_node = np;
88c84c14 YCLP	385	break;
	386	}
	387	}
c92f5dd2	388	of_node_put(nproot);
88c84c14 YCLP	389	#endif
88c84c14 YCLP	390	}
c172708d	391
08bf1c0a	392	regulator->rdev = regulator_register(&regulator->info->reg_desc,
c172708d	393	&config);
08bf1c0a AJ	394	if (IS_ERR(regulator->rdev)) {
	395	dev_err(&pdev->dev, "failed to register regulator %s\n",
	396	regulator->info->reg_desc.name);
7eb6444f	397	return PTR_ERR(regulator->rdev);
08bf1c0a AJ	398	}
	399
	400	platform_set_drvdata(pdev, regulator);
	401
	402	return 0;
08bf1c0a AJ	403	}
08bf1c0a AJ	404
8dc995f5	405	static int da9052_regulator_remove(struct platform_device *pdev)
08bf1c0a AJ	406	{
	407	struct da9052_regulator *regulator = platform_get_drvdata(pdev);
	408
	409	regulator_unregister(regulator->rdev);
08bf1c0a AJ	410	return 0;
	411	}
	412
	413	static struct platform_driver da9052_regulator_driver = {
	414	.probe = da9052_regulator_probe,
5eb9f2b9	415	.remove = da9052_regulator_remove,
08bf1c0a AJ	416	.driver = {
	417	.name = "da9052-regulator",
	418	.owner = THIS_MODULE,
	419	},
	420	};
	421
	422	static int __init da9052_regulator_init(void)
	423	{
	424	return platform_driver_register(&da9052_regulator_driver);
	425	}
	426	subsys_initcall(da9052_regulator_init);
	427
	428	static void __exit da9052_regulator_exit(void)
	429	{
	430	platform_driver_unregister(&da9052_regulator_driver);
	431	}
	432	module_exit(da9052_regulator_exit);
	433
	434	MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
	435	MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9052 PMIC");
	436	MODULE_LICENSE("GPL");
	437	MODULE_ALIAS("platform:da9052-regulator");