[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / regulator / da903x.c

/*
 * Regulators driver for Dialog Semiconductor 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/init.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/da903x.h>

/* DA9030 Registers */
#define DA9030_INVAL		(-1)
#define DA9030_LDO1011		(0x10)
#define DA9030_LDO15		(0x11)
#define DA9030_LDO1416		(0x12)
#define DA9030_LDO1819		(0x13)
#define DA9030_LDO17		(0x14)
#define DA9030_BUCK2DVM1	(0x15)
#define DA9030_BUCK2DVM2	(0x16)
#define DA9030_RCTL11		(0x17)
#define DA9030_RCTL21		(0x18)
#define DA9030_LDO1		(0x90)
#define DA9030_LDO23		(0x91)
#define DA9030_LDO45		(0x92)
#define DA9030_LDO6		(0x93)
#define DA9030_LDO78		(0x94)
#define DA9030_LDO912		(0x95)
#define DA9030_BUCK		(0x96)
#define DA9030_RCTL12		(0x97)
#define DA9030_RCTL22		(0x98)
#define DA9030_LDO_UNLOCK	(0xa0)
#define DA9030_LDO_UNLOCK_MASK	(0xe0)
#define DA9034_OVER1		(0x10)

/* DA9034 Registers */
#define DA9034_INVAL		(-1)
#define DA9034_OVER2		(0x11)
#define DA9034_OVER3		(0x12)
#define DA9034_LDO643		(0x13)
#define DA9034_LDO987		(0x14)
#define DA9034_LDO1110		(0x15)
#define DA9034_LDO1312		(0x16)
#define DA9034_LDO1514		(0x17)
#define DA9034_VCC1		(0x20)
#define DA9034_ADTV1		(0x23)
#define DA9034_ADTV2		(0x24)
#define DA9034_AVRC		(0x25)
#define DA9034_CDTV1		(0x26)
#define DA9034_CDTV2		(0x27)
#define DA9034_CVRC		(0x28)
#define DA9034_SDTV1		(0x29)
#define DA9034_SDTV2		(0x2a)
#define DA9034_SVRC		(0x2b)
#define DA9034_MDTV1		(0x32)
#define DA9034_MDTV2		(0x33)
#define DA9034_MVRC		(0x34)

/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */
#define DA9035_OVER3		(0x12)
#define DA9035_VCC2		(0x1f)
#define DA9035_3DTV1		(0x2c)
#define DA9035_3DTV2		(0x2d)
#define DA9035_3VRC		(0x2e)
#define DA9035_AUTOSKIP		(0x2f)

struct da903x_regulator_info {
	struct regulator_desc desc;

	int	min_uV;
	int	max_uV;
	int	step_uV;
	int	vol_reg;
	int	vol_shift;
	int	vol_nbits;
	int	update_reg;
	int	update_bit;
	int	enable_reg;
	int	enable_bit;
};

static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
{
	return rdev_get_dev(rdev)->parent->parent;
}

static inline int check_range(struct da903x_regulator_info *info,
				int min_uV, int max_uV)
{
	if (min_uV < info->min_uV || min_uV > info->max_uV)
		return -EINVAL;

	return 0;
}

/* DA9030/DA9034 common operations */
static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
				  int min_uV, int max_uV, unsigned *selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t val, mask;

	if (check_range(info, min_uV, max_uV)) {
		pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
		return -EINVAL;
	}

	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
	*selector = val;
	val <<= info->vol_shift;
	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;

	return da903x_update(da9034_dev, info->vol_reg, val, mask);
}

static int da903x_get_voltage_sel(struct regulator_dev *rdev)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t val, mask;
	int ret;

	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	if (ret)
		return ret;

	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;
	val = (val & mask) >> info->vol_shift;

	return val;
}

static int da903x_enable(struct regulator_dev *rdev)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);

	return da903x_set_bits(da9034_dev, info->enable_reg,
					1 << info->enable_bit);
}

static int da903x_disable(struct regulator_dev *rdev)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);

	return da903x_clr_bits(da9034_dev, info->enable_reg,
					1 << info->enable_bit);
}

static int da903x_is_enabled(struct regulator_dev *rdev)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t reg_val;
	int ret;

	ret = da903x_read(da9034_dev, info->enable_reg, &reg_val);
	if (ret)
		return ret;

	return !!(reg_val & (1 << info->enable_bit));
}

static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	int ret;

	ret = info->min_uV + info->step_uV * selector;
	if (ret > info->max_uV)
		return -EINVAL;
	return ret;
}

/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
				      int min_uV, int max_uV,
				      unsigned *selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da903x_dev = to_da903x_dev(rdev);
	uint8_t val, mask;
	int ret;

	if (check_range(info, min_uV, max_uV)) {
		pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
		return -EINVAL;
	}

	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
	*selector = val;
	val <<= info->vol_shift;
	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;
	val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
	mask |= DA9030_LDO_UNLOCK_MASK;

	/* write twice */
	ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
	if (ret)
		return ret;

	return da903x_update(da903x_dev, info->vol_reg, val, mask);
}

static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV,
				    unsigned *selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da903x_dev = to_da903x_dev(rdev);
	uint8_t val, mask;
	int thresh;

	if (check_range(info, min_uV, max_uV)) {
		pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
		return -EINVAL;
	}

	thresh = (info->max_uV + info->min_uV) / 2;
	if (min_uV < thresh) {
		val = DIV_ROUND_UP(thresh - min_uV, info->step_uV);
		val |= 0x4;
	} else {
		val = DIV_ROUND_UP(min_uV - thresh, info->step_uV);
	}

	*selector = val;
	val <<= info->vol_shift;
	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;

	return da903x_update(da903x_dev, info->vol_reg, val, mask);
}

static int da9030_get_ldo14_voltage_sel(struct regulator_dev *rdev)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da903x_dev = to_da903x_dev(rdev);
	uint8_t val, mask;
	int ret;

	ret = da903x_read(da903x_dev, info->vol_reg, &val);
	if (ret)
		return ret;

	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;
	val = (val & mask) >> info->vol_shift;

	return val;
}

static int da9030_list_ldo14_voltage(struct regulator_dev *rdev,
				     unsigned selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	int volt;

	if (selector & 0x4)
		volt = info->min_uV + info->step_uV * (3 - (selector & ~0x4));
	else
		volt = (info->max_uV + info->min_uV) / 2 +
		       info->step_uV * (selector & ~0x4);

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

	return volt;
}

/* DA9034 specific operations */
static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
				  int min_uV, int max_uV, unsigned *selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t val, mask;
	int ret;

	if (check_range(info, min_uV, max_uV)) {
		pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
		return -EINVAL;
	}

	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
	*selector = val;
	val <<= info->vol_shift;
	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;

	ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
	if (ret)
		return ret;

	ret = da903x_set_bits(da9034_dev, info->update_reg,
					1 << info->update_bit);
	return ret;
}

static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV, unsigned *selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t val, mask;

	if (check_range(info, min_uV, max_uV)) {
		pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
		return -EINVAL;
	}

	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
	val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val);
	*selector = val;
	val <<= info->vol_shift;
	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;

	return da903x_update(da9034_dev, info->vol_reg, val, mask);
}

static int da9034_get_ldo12_voltage_sel(struct regulator_dev *rdev)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t val, mask;
	int ret;

	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	if (ret)
		return ret;

	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;
	val = (val & mask) >> info->vol_shift;

	return val;
}

static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
				     unsigned selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	int volt;

	if (selector >= 8)
		volt = 2700000 + info->step_uV * (selector - 8);
	else
		volt = info->min_uV + info->step_uV * selector;

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

	return volt;
}

static struct regulator_ops da903x_regulator_ldo_ops = {
	.set_voltage	= da903x_set_ldo_voltage,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= da903x_list_voltage,
	.enable		= da903x_enable,
	.disable	= da903x_disable,
	.is_enabled	= da903x_is_enabled,
};

/* NOTE: this is dedicated for the insane DA9030 LDO14 */
static struct regulator_ops da9030_regulator_ldo14_ops = {
	.set_voltage	= da9030_set_ldo14_voltage,
	.get_voltage_sel = da9030_get_ldo14_voltage_sel,
	.list_voltage	= da9030_list_ldo14_voltage,
	.enable		= da903x_enable,
	.disable	= da903x_disable,
	.is_enabled	= da903x_is_enabled,
};

/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks  */
static struct regulator_ops da9030_regulator_ldo1_15_ops = {
	.set_voltage	= da9030_set_ldo1_15_voltage,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= da903x_list_voltage,
	.enable		= da903x_enable,
	.disable	= da903x_disable,
	.is_enabled	= da903x_is_enabled,
};

static struct regulator_ops da9034_regulator_dvc_ops = {
	.set_voltage	= da9034_set_dvc_voltage,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= da903x_list_voltage,
	.enable		= da903x_enable,
	.disable	= da903x_disable,
	.is_enabled	= da903x_is_enabled,
};

/* NOTE: this is dedicated for the insane LDO12 */
static struct regulator_ops da9034_regulator_ldo12_ops = {
	.set_voltage	= da9034_set_ldo12_voltage,
	.get_voltage_sel = da9034_get_ldo12_voltage_sel,
	.list_voltage	= da9034_list_ldo12_voltage,
	.enable		= da903x_enable,
	.disable	= da903x_disable,
	.is_enabled	= da903x_is_enabled,
};

#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit)	\
{									\
	.desc	= {							\
		.name	= "LDO" #_id,					\
		.ops	= &da903x_regulator_ldo_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= _pmic##_ID_LDO##_id,				\
		.n_voltages = (step) ? ((max - min) / step + 1) : 1,	\
		.owner	= THIS_MODULE,					\
	},								\
	.min_uV		= (min) * 1000,					\
	.max_uV		= (max) * 1000,					\
	.step_uV	= (step) * 1000,				\
	.vol_reg	= _pmic##_##vreg,				\
	.vol_shift	= (shift),					\
	.vol_nbits	= (nbits),					\
	.enable_reg	= _pmic##_##ereg,				\
	.enable_bit	= (ebit),					\
}

#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
{									\
	.desc	= {							\
		.name	= #_id,						\
		.ops	= &da9034_regulator_dvc_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= _pmic##_ID_##_id,				\
		.n_voltages = (step) ? ((max - min) / step + 1) : 1,	\
		.owner	= THIS_MODULE,					\
	},								\
	.min_uV		= (min) * 1000,					\
	.max_uV		= (max) * 1000,					\
	.step_uV	= (step) * 1000,				\
	.vol_reg	= _pmic##_##vreg,				\
	.vol_shift	= (0),						\
	.vol_nbits	= (nbits),					\
	.update_reg	= _pmic##_##ureg,				\
	.update_bit	= (ubit),					\
	.enable_reg	= _pmic##_##ereg,				\
	.enable_bit	= (ebit),					\
}

#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit)	\
	DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)

#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit)	\
	DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)

#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
		   ereg, ebit)

#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
		   ereg, ebit)

#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
		   ereg, ebit)

static struct da903x_regulator_info da903x_regulator_info[] = {
	/* DA9030 */
	DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),

	DA9030_LDO( 1, 1200, 3200, 100,    LDO1, 0, 5, RCTL12, 1),
	DA9030_LDO( 2, 1800, 3200, 100,   LDO23, 0, 4, RCTL12, 2),
	DA9030_LDO( 3, 1800, 3200, 100,   LDO23, 4, 4, RCTL12, 3),
	DA9030_LDO( 4, 1800, 3200, 100,   LDO45, 0, 4, RCTL12, 4),
	DA9030_LDO( 5, 1800, 3200, 100,   LDO45, 4, 4, RCTL12, 5),
	DA9030_LDO( 6, 1800, 3200, 100,    LDO6, 0, 4, RCTL12, 6),
	DA9030_LDO( 7, 1800, 3200, 100,   LDO78, 0, 4, RCTL12, 7),
	DA9030_LDO( 8, 1800, 3200, 100,   LDO78, 4, 4, RCTL22, 0),
	DA9030_LDO( 9, 1800, 3200, 100,  LDO912, 0, 4, RCTL22, 1),
	DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
	DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
	DA9030_LDO(12, 1800, 3200, 100,  LDO912, 4, 4, RCTL22, 4),
	DA9030_LDO(14, 2760, 2940,  30, LDO1416, 0, 3, RCTL11, 4),
	DA9030_LDO(15, 1100, 2650,  50,	  LDO15, 0, 5, RCTL11, 5),
	DA9030_LDO(16, 1100, 2650,  50, LDO1416, 3, 5, RCTL11, 6),
	DA9030_LDO(17, 1800, 3200, 100,   LDO17, 0, 4, RCTL11, 7),
	DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
	DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
	DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */

	/* DA9034 */
	DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
	DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
	DA9034_DVC(LDO2,  725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
	DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),

	DA9034_LDO( 3, 1800, 3300, 100,  LDO643, 0, 4, OVER3, 5),
	DA9034_LDO( 4, 1800, 2900,1100,  LDO643, 4, 1, OVER3, 6),
	DA9034_LDO( 6, 2500, 2850,  50,  LDO643, 5, 3, OVER2, 0),
	DA9034_LDO( 7, 2700, 3050,  50,  LDO987, 0, 3, OVER2, 1),
	DA9034_LDO( 8, 2700, 2850,  50,  LDO987, 3, 2, OVER2, 2),
	DA9034_LDO( 9, 2700, 3050,  50,  LDO987, 5, 3, OVER2, 3),
	DA9034_LDO(10, 2700, 3050,  50, LDO1110, 0, 3, OVER2, 4),
	DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
	DA9034_LDO(12, 1700, 3050,  50, LDO1312, 0, 4, OVER3, 6),
	DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
	DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
	DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
	DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */

	/* DA9035 */
	DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
};

static inline struct da903x_regulator_info *find_regulator_info(int id)
{
	struct da903x_regulator_info *ri;
	int i;

	for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
		ri = &da903x_regulator_info[i];
		if (ri->desc.id == id)
			return ri;
	}
	return NULL;
}

static int __devinit da903x_regulator_probe(struct platform_device *pdev)
{
	struct da903x_regulator_info *ri = NULL;
	struct regulator_dev *rdev;
	struct regulator_config config = { };

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

	/* Workaround for the weird LDO12 voltage setting */
	if (ri->desc.id == DA9034_ID_LDO12) {
		ri->desc.ops = &da9034_regulator_ldo12_ops;
		ri->desc.n_voltages = 16;
	}

	if (ri->desc.id == DA9030_ID_LDO14)
		ri->desc.ops = &da9030_regulator_ldo14_ops;

	if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)
		ri->desc.ops = &da9030_regulator_ldo1_15_ops;

	config.dev = &pdev->dev;
	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 0;
}

static int __devexit da903x_regulator_remove(struct platform_device *pdev)
{
	struct regulator_dev *rdev = platform_get_drvdata(pdev);

	regulator_unregister(rdev);
	return 0;
}

static struct platform_driver da903x_regulator_driver = {
	.driver	= {
		.name	= "da903x-regulator",
		.owner	= THIS_MODULE,
	},
	.probe		= da903x_regulator_probe,
	.remove		= __devexit_p(da903x_regulator_remove),
};

static int __init da903x_regulator_init(void)
{
	return platform_driver_register(&da903x_regulator_driver);
}
subsys_initcall(da903x_regulator_init);

static void __exit da903x_regulator_exit(void)
{
	platform_driver_unregister(&da903x_regulator_driver);
}
module_exit(da903x_regulator_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
	      "Mike Rapoport <mike@compulab.co.il>");
MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
MODULE_ALIAS("platform:da903x-regulator");
Commit	Line	Data
129eef96 EM	1	/*
	2	* Regulators driver for Dialog Semiconductor DA903x
	3	*
	4	* Copyright (C) 2006-2008 Marvell International Ltd.
	5	* Copyright (C) 2008 Compulab Ltd.
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/kernel.h>
	13	#include <linux/init.h>
	14	#include <linux/err.h>
65602c32	15	#include <linux/module.h>
129eef96 EM	16	#include <linux/platform_device.h>
	17	#include <linux/regulator/driver.h>
	18	#include <linux/regulator/machine.h>
	19	#include <linux/mfd/da903x.h>
	20
	21	/* DA9030 Registers */
	22	#define DA9030_INVAL (-1)
	23	#define DA9030_LDO1011 (0x10)
	24	#define DA9030_LDO15 (0x11)
	25	#define DA9030_LDO1416 (0x12)
	26	#define DA9030_LDO1819 (0x13)
	27	#define DA9030_LDO17 (0x14)
	28	#define DA9030_BUCK2DVM1 (0x15)
	29	#define DA9030_BUCK2DVM2 (0x16)
	30	#define DA9030_RCTL11 (0x17)
	31	#define DA9030_RCTL21 (0x18)
	32	#define DA9030_LDO1 (0x90)
	33	#define DA9030_LDO23 (0x91)
	34	#define DA9030_LDO45 (0x92)
	35	#define DA9030_LDO6 (0x93)
	36	#define DA9030_LDO78 (0x94)
	37	#define DA9030_LDO912 (0x95)
	38	#define DA9030_BUCK (0x96)
	39	#define DA9030_RCTL12 (0x97)
	40	#define DA9030_RCTL22 (0x98)
	41	#define DA9030_LDO_UNLOCK (0xa0)
	42	#define DA9030_LDO_UNLOCK_MASK (0xe0)
	43	#define DA9034_OVER1 (0x10)
	44
	45	/* DA9034 Registers */
	46	#define DA9034_INVAL (-1)
	47	#define DA9034_OVER2 (0x11)
	48	#define DA9034_OVER3 (0x12)
	49	#define DA9034_LDO643 (0x13)
	50	#define DA9034_LDO987 (0x14)
	51	#define DA9034_LDO1110 (0x15)
	52	#define DA9034_LDO1312 (0x16)
	53	#define DA9034_LDO1514 (0x17)
	54	#define DA9034_VCC1 (0x20)
	55	#define DA9034_ADTV1 (0x23)
	56	#define DA9034_ADTV2 (0x24)
	57	#define DA9034_AVRC (0x25)
	58	#define DA9034_CDTV1 (0x26)
	59	#define DA9034_CDTV2 (0x27)
	60	#define DA9034_CVRC (0x28)
	61	#define DA9034_SDTV1 (0x29)
	62	#define DA9034_SDTV2 (0x2a)
	63	#define DA9034_SVRC (0x2b)
	64	#define DA9034_MDTV1 (0x32)
	65	#define DA9034_MDTV2 (0x33)
	66	#define DA9034_MVRC (0x34)
	67
0198d116 HZ	68	/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */
	69	#define DA9035_OVER3 (0x12)
	70	#define DA9035_VCC2 (0x1f)
	71	#define DA9035_3DTV1 (0x2c)
	72	#define DA9035_3DTV2 (0x2d)
	73	#define DA9035_3VRC (0x2e)
	74	#define DA9035_AUTOSKIP (0x2f)
	75
129eef96 EM	76	struct da903x_regulator_info {
	77	struct regulator_desc desc;
	78
	79	int min_uV;
	80	int max_uV;
	81	int step_uV;
	82	int vol_reg;
	83	int vol_shift;
	84	int vol_nbits;
	85	int update_reg;
	86	int update_bit;
	87	int enable_reg;
	88	int enable_bit;
	89	};
	90
1841c0f2 JC	91	static inline struct device to_da903x_dev(struct regulator_dev rdev)
	92	{
	93	return rdev_get_dev(rdev)->parent->parent;
	94	}
	95
129eef96 EM	96	static inline int check_range(struct da903x_regulator_info *info,
	97	int min_uV, int max_uV)
	98	{
	99	if (min_uV < info->min_uV \|\| min_uV > info->max_uV)
	100	return -EINVAL;
	101
	102	return 0;
	103	}
	104
	105	/* DA9030/DA9034 common operations */
	106	static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
3a93f2a9	107	int min_uV, int max_uV, unsigned *selector)
129eef96 EM	108	{
129eef96 EM	109	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	110	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	111	uint8_t val, mask;
	112
	113	if (check_range(info, min_uV, max_uV)) {
471d8d49	114	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	115	return -EINVAL;
	116	}
	117
ae76e830	118	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
3a93f2a9	119	*selector = val;
129eef96 EM	120	val <<= info->vol_shift;
	121	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	122
	123	return da903x_update(da9034_dev, info->vol_reg, val, mask);
	124	}
	125
9447f35a	126	static int da903x_get_voltage_sel(struct regulator_dev *rdev)
129eef96 EM	127	{
129eef96 EM	128	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	129	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	130	uint8_t val, mask;
	131	int ret;
	132
	133	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	134	if (ret)
	135	return ret;
	136
	137	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	138	val = (val & mask) >> info->vol_shift;
	139
9447f35a	140	return val;
129eef96 EM	141	}
	142
	143	static int da903x_enable(struct regulator_dev *rdev)
	144	{
	145	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	146	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	147
	148	return da903x_set_bits(da9034_dev, info->enable_reg,
	149	1 << info->enable_bit);
	150	}
	151
	152	static int da903x_disable(struct regulator_dev *rdev)
	153	{
	154	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	155	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	156
	157	return da903x_clr_bits(da9034_dev, info->enable_reg,
	158	1 << info->enable_bit);
	159	}
	160
	161	static int da903x_is_enabled(struct regulator_dev *rdev)
	162	{
	163	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	164	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	165	uint8_t reg_val;
	166	int ret;
	167
	168	ret = da903x_read(da9034_dev, info->enable_reg, &reg_val);
	169	if (ret)
	170	return ret;
	171
96186904	172	return !!(reg_val & (1 << info->enable_bit));
129eef96 EM	173	}
129eef96 EM	174
c1b60873 HZ	175	static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector)
	176	{
	177	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	178	int ret;
	179
	180	ret = info->min_uV + info->step_uV * selector;
	181	if (ret > info->max_uV)
	182	return -EINVAL;
	183	return ret;
	184	}
	185
129eef96 EM	186	/* DA9030 specific operations */
129eef96 EM	187	static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
3a93f2a9 MB	188	int min_uV, int max_uV,
3a93f2a9 MB	189	unsigned *selector)
129eef96 EM	190	{
129eef96 EM	191	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	192	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	193	uint8_t val, mask;
	194	int ret;
	195
	196	if (check_range(info, min_uV, max_uV)) {
471d8d49	197	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	198	return -EINVAL;
	199	}
	200
ae76e830	201	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
3a93f2a9	202	*selector = val;
129eef96 EM	203	val <<= info->vol_shift;
	204	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	205	val \|= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
	206	mask \|= DA9030_LDO_UNLOCK_MASK;
	207
	208	/* write twice */
	209	ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
	210	if (ret)
	211	return ret;
	212
	213	return da903x_update(da903x_dev, info->vol_reg, val, mask);
	214	}
	215
	216	static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
3a93f2a9 MB	217	int min_uV, int max_uV,
3a93f2a9 MB	218	unsigned *selector)
129eef96 EM	219	{
129eef96 EM	220	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	221	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	222	uint8_t val, mask;
	223	int thresh;
	224
	225	if (check_range(info, min_uV, max_uV)) {
471d8d49	226	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	227	return -EINVAL;
	228	}
	229
	230	thresh = (info->max_uV + info->min_uV) / 2;
	231	if (min_uV < thresh) {
ae76e830	232	val = DIV_ROUND_UP(thresh - min_uV, info->step_uV);
129eef96 EM	233	val \|= 0x4;
129eef96 EM	234	} else {
ae76e830	235	val = DIV_ROUND_UP(min_uV - thresh, info->step_uV);
129eef96 EM	236	}
129eef96 EM	237
3a93f2a9	238	*selector = val;
129eef96 EM	239	val <<= info->vol_shift;
	240	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	241
	242	return da903x_update(da903x_dev, info->vol_reg, val, mask);
	243	}
	244
9447f35a	245	static int da9030_get_ldo14_voltage_sel(struct regulator_dev *rdev)
129eef96 EM	246	{
129eef96 EM	247	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	248	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	249	uint8_t val, mask;
	250	int ret;
	251
	252	ret = da903x_read(da903x_dev, info->vol_reg, &val);
	253	if (ret)
	254	return ret;
	255
	256	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	257	val = (val & mask) >> info->vol_shift;
	258
9447f35a	259	return val;
129eef96 EM	260	}
129eef96 EM	261
d4eb56a1 AL	262	static int da9030_list_ldo14_voltage(struct regulator_dev *rdev,
	263	unsigned selector)
	264	{
	265	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	266	int volt;
	267
	268	if (selector & 0x4)
	269	volt = info->min_uV + info->step_uV * (3 - (selector & ~0x4));
	270	else
	271	volt = (info->max_uV + info->min_uV) / 2 +
	272	info->step_uV * (selector & ~0x4);
	273
	274	if (volt > info->max_uV)
	275	return -EINVAL;
	276
	277	return volt;
	278	}
	279
129eef96 EM	280	/* DA9034 specific operations */
129eef96 EM	281	static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
3a93f2a9	282	int min_uV, int max_uV, unsigned *selector)
129eef96 EM	283	{
129eef96 EM	284	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	285	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	286	uint8_t val, mask;
	287	int ret;
	288
	289	if (check_range(info, min_uV, max_uV)) {
471d8d49	290	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	291	return -EINVAL;
	292	}
	293
ae76e830	294	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
3a93f2a9	295	*selector = val;
129eef96 EM	296	val <<= info->vol_shift;
	297	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	298
	299	ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
	300	if (ret)
	301	return ret;
	302
	303	ret = da903x_set_bits(da9034_dev, info->update_reg,
	304	1 << info->update_bit);
	305	return ret;
	306	}
	307
	308	static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
3a93f2a9	309	int min_uV, int max_uV, unsigned *selector)
129eef96 EM	310	{
129eef96 EM	311	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	312	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	313	uint8_t val, mask;
	314
	315	if (check_range(info, min_uV, max_uV)) {
471d8d49	316	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	317	return -EINVAL;
	318	}
	319
ae76e830	320	val = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV);
55c1d7c6	321	val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val);
3a93f2a9	322	*selector = val;
129eef96 EM	323	val <<= info->vol_shift;
	324	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	325
	326	return da903x_update(da9034_dev, info->vol_reg, val, mask);
	327	}
	328
9447f35a	329	static int da9034_get_ldo12_voltage_sel(struct regulator_dev *rdev)
129eef96 EM	330	{
129eef96 EM	331	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	332	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	333	uint8_t val, mask;
	334	int ret;
	335
	336	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	337	if (ret)
	338	return ret;
	339
	340	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	341	val = (val & mask) >> info->vol_shift;
	342
9447f35a	343	return val;
129eef96 EM	344	}
129eef96 EM	345
c1b60873 HZ	346	static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
	347	unsigned selector)
	348	{
9447f35a AL	349	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	350	int volt;
	351
	352	if (selector >= 8)
	353	volt = 2700000 + info->step_uV * (selector - 8);
	354	else
	355	volt = info->min_uV + info->step_uV * selector;
	356
	357	if (volt > info->max_uV)
c1b60873	358	return -EINVAL;
9447f35a AL	359
9447f35a AL	360	return volt;
c1b60873 HZ	361	}
c1b60873 HZ	362
129eef96 EM	363	static struct regulator_ops da903x_regulator_ldo_ops = {
129eef96 EM	364	.set_voltage = da903x_set_ldo_voltage,
9447f35a	365	.get_voltage_sel = da903x_get_voltage_sel,
c1b60873	366	.list_voltage = da903x_list_voltage,
129eef96 EM	367	.enable = da903x_enable,
	368	.disable = da903x_disable,
	369	.is_enabled = da903x_is_enabled,
	370	};
	371
	372	/* NOTE: this is dedicated for the insane DA9030 LDO14 */
	373	static struct regulator_ops da9030_regulator_ldo14_ops = {
	374	.set_voltage = da9030_set_ldo14_voltage,
9447f35a	375	.get_voltage_sel = da9030_get_ldo14_voltage_sel,
d4eb56a1	376	.list_voltage = da9030_list_ldo14_voltage,
129eef96 EM	377	.enable = da903x_enable,
	378	.disable = da903x_disable,
	379	.is_enabled = da903x_is_enabled,
	380	};
	381
	382	/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
	383	static struct regulator_ops da9030_regulator_ldo1_15_ops = {
	384	.set_voltage = da9030_set_ldo1_15_voltage,
9447f35a	385	.get_voltage_sel = da903x_get_voltage_sel,
c1b60873	386	.list_voltage = da903x_list_voltage,
129eef96 EM	387	.enable = da903x_enable,
	388	.disable = da903x_disable,
	389	.is_enabled = da903x_is_enabled,
	390	};
	391
	392	static struct regulator_ops da9034_regulator_dvc_ops = {
	393	.set_voltage = da9034_set_dvc_voltage,
9447f35a	394	.get_voltage_sel = da903x_get_voltage_sel,
c1b60873	395	.list_voltage = da903x_list_voltage,
129eef96 EM	396	.enable = da903x_enable,
	397	.disable = da903x_disable,
	398	.is_enabled = da903x_is_enabled,
	399	};
	400
	401	/* NOTE: this is dedicated for the insane LDO12 */
	402	static struct regulator_ops da9034_regulator_ldo12_ops = {
	403	.set_voltage = da9034_set_ldo12_voltage,
9447f35a	404	.get_voltage_sel = da9034_get_ldo12_voltage_sel,
c1b60873	405	.list_voltage = da9034_list_ldo12_voltage,
129eef96 EM	406	.enable = da903x_enable,
	407	.disable = da903x_disable,
	408	.is_enabled = da903x_is_enabled,
	409	};
	410
	411	#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	412	{ \
	413	.desc = { \
	414	.name = "LDO" #_id, \
	415	.ops = &da903x_regulator_ldo_ops, \
	416	.type = REGULATOR_VOLTAGE, \
	417	.id = _pmic##_ID_LDO##_id, \
c1b60873	418	.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
129eef96 EM	419	.owner = THIS_MODULE, \
	420	}, \
	421	.min_uV = (min) * 1000, \
	422	.max_uV = (max) * 1000, \
	423	.step_uV = (step) * 1000, \
	424	.vol_reg = _pmic##_##vreg, \
	425	.vol_shift = (shift), \
	426	.vol_nbits = (nbits), \
	427	.enable_reg = _pmic##_##ereg, \
	428	.enable_bit = (ebit), \
	429	}
	430
c6db1828	431	#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
fc4f42e7 HZ	432	{ \
	433	.desc = { \
	434	.name = #_id, \
	435	.ops = &da9034_regulator_dvc_ops, \
	436	.type = REGULATOR_VOLTAGE, \
c6db1828	437	.id = _pmic##_ID_##_id, \
c1b60873	438	.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
fc4f42e7 HZ	439	.owner = THIS_MODULE, \
	440	}, \
	441	.min_uV = (min) * 1000, \
	442	.max_uV = (max) * 1000, \
	443	.step_uV = (step) * 1000, \
c6db1828	444	.vol_reg = _pmic##_##vreg, \
0198d116 HZ	445	.vol_shift = (0), \
0198d116 HZ	446	.vol_nbits = (nbits), \
c6db1828	447	.update_reg = _pmic##_##ureg, \
0198d116	448	.update_bit = (ubit), \
c6db1828	449	.enable_reg = _pmic##_##ereg, \
0198d116 HZ	450	.enable_bit = (ebit), \
	451	}
	452
129eef96 EM	453	#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	454	DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	455
	456	#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	457	DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	458
c6db1828 MR	459	#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	460	DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
	461	ereg, ebit)
	462
	463	#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	464	DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
	465	ereg, ebit)
	466
	467	#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	468	DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
	469	ereg, ebit)
	470
129eef96 EM	471	static struct da903x_regulator_info da903x_regulator_info[] = {
129eef96 EM	472	/* DA9030 */
fc4f42e7 HZ	473	DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
fc4f42e7 HZ	474
129eef96 EM	475	DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
	476	DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
	477	DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
	478	DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
	479	DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
	480	DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
	481	DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
	482	DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
	483	DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
	484	DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
	485	DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
	486	DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
	487	DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
	488	DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
	489	DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
	490	DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
	491	DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
	492	DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
	493	DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
	494
	495	/* DA9034 */
e88267e1 HZ	496	DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
	497	DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
	498	DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
129eef96 EM	499	DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
	500
	501	DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
	502	DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
	503	DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
	504	DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
	505	DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
	506	DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
	507	DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
	508	DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
	509	DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
	510	DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
	511	DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
	512	DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
	513	DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
0198d116 HZ	514
	515	/* DA9035 */
	516	DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
129eef96 EM	517	};
	518
	519	static inline struct da903x_regulator_info *find_regulator_info(int id)
	520	{
	521	struct da903x_regulator_info *ri;
	522	int i;
	523
	524	for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
	525	ri = &da903x_regulator_info[i];
	526	if (ri->desc.id == id)
	527	return ri;
	528	}
	529	return NULL;
	530	}
	531
	532	static int __devinit da903x_regulator_probe(struct platform_device *pdev)
	533	{
	534	struct da903x_regulator_info *ri = NULL;
	535	struct regulator_dev *rdev;
c172708d	536	struct regulator_config config = { };
129eef96 EM	537
	538	ri = find_regulator_info(pdev->id);
	539	if (ri == NULL) {
	540	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	541	return -EINVAL;
	542	}
	543
	544	/* Workaround for the weird LDO12 voltage setting */
c1b60873	545	if (ri->desc.id == DA9034_ID_LDO12) {
129eef96	546	ri->desc.ops = &da9034_regulator_ldo12_ops;
9447f35a	547	ri->desc.n_voltages = 16;
c1b60873	548	}
129eef96 EM	549
	550	if (ri->desc.id == DA9030_ID_LDO14)
	551	ri->desc.ops = &da9030_regulator_ldo14_ops;
	552
	553	if (ri->desc.id == DA9030_ID_LDO1 \|\| ri->desc.id == DA9030_ID_LDO15)
	554	ri->desc.ops = &da9030_regulator_ldo1_15_ops;
	555
c172708d	556	config.dev = &pdev->dev;
fe53d18d	557	config.init_data = pdev->dev.platform_data;
c172708d MB	558	config.driver_data = ri;
	559
	560	rdev = regulator_register(&ri->desc, &config);
129eef96 EM	561	if (IS_ERR(rdev)) {
	562	dev_err(&pdev->dev, "failed to register regulator %s\n",
	563	ri->desc.name);
	564	return PTR_ERR(rdev);
	565	}
	566
	567	platform_set_drvdata(pdev, rdev);
	568	return 0;
	569	}
	570
	571	static int __devexit da903x_regulator_remove(struct platform_device *pdev)
	572	{
	573	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	574
	575	regulator_unregister(rdev);
	576	return 0;
	577	}
	578
	579	static struct platform_driver da903x_regulator_driver = {
	580	.driver = {
	581	.name = "da903x-regulator",
	582	.owner = THIS_MODULE,
	583	},
	584	.probe = da903x_regulator_probe,
5b4662f0	585	.remove = __devexit_p(da903x_regulator_remove),
129eef96 EM	586	};
	587
	588	static int __init da903x_regulator_init(void)
	589	{
	590	return platform_driver_register(&da903x_regulator_driver);
	591	}
5a1b22be	592	subsys_initcall(da903x_regulator_init);
129eef96 EM	593
	594	static void __exit da903x_regulator_exit(void)
	595	{
	596	platform_driver_unregister(&da903x_regulator_driver);
	597	}
	598	module_exit(da903x_regulator_exit);
	599
	600	MODULE_LICENSE("GPL");
	601	MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
	602	"Mike Rapoport <mike@compulab.co.il>");
	603	MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
	604	MODULE_ALIAS("platform:da903x-regulator");