[net-next-2.6.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/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)
{
	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 = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	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(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 info->min_uV + info->step_uV * 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));
}

/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
				       int min_uV, int max_uV)
{
	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 = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	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)
{
	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 = (thresh - min_uV + info->step_uV - 1) / info->step_uV;
		val |= 0x4;
	} else {
		val = (min_uV - thresh + info->step_uV - 1) / info->step_uV;
	}

	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(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;

	if (val & 0x4)
		return info->min_uV + info->step_uV * (3 - (val & ~0x4));
	else
		return (info->max_uV + info->min_uV) / 2 +
			info->step_uV * (val & ~0x4);
}

/* DA9034 specific operations */
static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
				  int min_uV, int max_uV)
{
	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 = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	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)
{
	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 = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	val = (val > 7 || val < 20) ? 8 : val - 12;
	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(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;

	if (val >= 8)
		return 2700000 + info->step_uV * (val - 8);

	return info->min_uV + info->step_uV * val;
}

static struct regulator_ops da903x_regulator_ldo_ops = {
	.set_voltage	= da903x_set_ldo_voltage,
	.get_voltage	= da903x_get_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	= da9030_get_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	= da903x_get_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	= da903x_get_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	= da9034_get_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,				\
		.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 DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
{									\
	.desc	= {							\
		.name	= #_id,						\
		.ops	= &da9034_regulator_dvc_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= DA9034_ID_##_id,				\
		.owner	= THIS_MODULE,					\
	},								\
	.min_uV		= (min) * 1000,					\
	.max_uV		= (max) * 1000,					\
	.step_uV	= (step) * 1000,				\
	.vol_reg	= DA9034_##vreg,				\
	.vol_shift	= (0),						\
	.vol_nbits	= (nbits),					\
	.update_reg	= DA9034_##ureg,				\
	.update_bit	= (ubit),					\
	.enable_reg	= DA9034_##ereg,				\
	.enable_bit	= (ebit),					\
}

#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
{									\
	.desc	= {							\
		.name	= #_id,						\
		.ops	= &da9034_regulator_dvc_ops,			\
		.type	= REGULATOR_VOLTAGE,				\
		.id	= DA9035_ID_##_id,				\
		.owner	= THIS_MODULE,					\
	},								\
	.min_uV		= (min) * 1000,					\
	.max_uV		= (max) * 1000,					\
	.step_uV	= (step) * 1000,				\
	.vol_reg	= DA9035_##vreg,				\
	.vol_shift	= (0),						\
	.vol_nbits	= (nbits),					\
	.update_reg	= DA9035_##ureg,				\
	.update_bit	= (ubit),					\
	.enable_reg	= DA9035_##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)

static struct da903x_regulator_info da903x_regulator_info[] = {
	/* DA9030 */
	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, ADTV1, 5, VCC1, 0, OVER1, 0),
	DA9034_DVC(BUCK2, 725, 1500, 25, CDTV1, 5, VCC1, 2, OVER1, 1),
	DA9034_DVC(LDO2,  725, 1500, 25, SDTV1, 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;

	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;

	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;

	rdev = regulator_register(&ri->desc, &pdev->dev,
				  pdev->dev.platform_data, ri);
	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>
	15	#include <linux/platform_device.h>
	16	#include <linux/regulator/driver.h>
	17	#include <linux/regulator/machine.h>
	18	#include <linux/mfd/da903x.h>
	19
	20	/* DA9030 Registers */
	21	#define DA9030_INVAL (-1)
	22	#define DA9030_LDO1011 (0x10)
	23	#define DA9030_LDO15 (0x11)
	24	#define DA9030_LDO1416 (0x12)
	25	#define DA9030_LDO1819 (0x13)
	26	#define DA9030_LDO17 (0x14)
	27	#define DA9030_BUCK2DVM1 (0x15)
	28	#define DA9030_BUCK2DVM2 (0x16)
	29	#define DA9030_RCTL11 (0x17)
	30	#define DA9030_RCTL21 (0x18)
	31	#define DA9030_LDO1 (0x90)
	32	#define DA9030_LDO23 (0x91)
	33	#define DA9030_LDO45 (0x92)
	34	#define DA9030_LDO6 (0x93)
	35	#define DA9030_LDO78 (0x94)
	36	#define DA9030_LDO912 (0x95)
	37	#define DA9030_BUCK (0x96)
	38	#define DA9030_RCTL12 (0x97)
	39	#define DA9030_RCTL22 (0x98)
	40	#define DA9030_LDO_UNLOCK (0xa0)
	41	#define DA9030_LDO_UNLOCK_MASK (0xe0)
	42	#define DA9034_OVER1 (0x10)
	43
	44	/* DA9034 Registers */
	45	#define DA9034_INVAL (-1)
	46	#define DA9034_OVER2 (0x11)
	47	#define DA9034_OVER3 (0x12)
	48	#define DA9034_LDO643 (0x13)
	49	#define DA9034_LDO987 (0x14)
	50	#define DA9034_LDO1110 (0x15)
	51	#define DA9034_LDO1312 (0x16)
	52	#define DA9034_LDO1514 (0x17)
	53	#define DA9034_VCC1 (0x20)
	54	#define DA9034_ADTV1 (0x23)
	55	#define DA9034_ADTV2 (0x24)
	56	#define DA9034_AVRC (0x25)
	57	#define DA9034_CDTV1 (0x26)
	58	#define DA9034_CDTV2 (0x27)
	59	#define DA9034_CVRC (0x28)
	60	#define DA9034_SDTV1 (0x29)
	61	#define DA9034_SDTV2 (0x2a)
	62	#define DA9034_SVRC (0x2b)
	63	#define DA9034_MDTV1 (0x32)
	64	#define DA9034_MDTV2 (0x33)
65	#define DA9034_MVRC (0x34)
66
0198d116 HZ	67	/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */
	68	#define DA9035_OVER3 (0x12)
	69	#define DA9035_VCC2 (0x1f)
	70	#define DA9035_3DTV1 (0x2c)
	71	#define DA9035_3DTV2 (0x2d)
	72	#define DA9035_3VRC (0x2e)
	73	#define DA9035_AUTOSKIP (0x2f)
	74
129eef96 EM	75	struct da903x_regulator_info {
	76	struct regulator_desc desc;
	77
	78	int min_uV;
	79	int max_uV;
	80	int step_uV;
	81	int vol_reg;
	82	int vol_shift;
	83	int vol_nbits;
	84	int update_reg;
	85	int update_bit;
	86	int enable_reg;
	87	int enable_bit;
	88	};
	89
1841c0f2 JC	90	static inline struct device to_da903x_dev(struct regulator_dev rdev)
	91	{
	92	return rdev_get_dev(rdev)->parent->parent;
	93	}
	94
129eef96 EM	95	static inline int check_range(struct da903x_regulator_info *info,
	96	int min_uV, int max_uV)
	97	{
	98	if (min_uV < info->min_uV \|\| min_uV > info->max_uV)
	99	return -EINVAL;
	100
	101	return 0;
	102	}
	103
	104	/* DA9030/DA9034 common operations */
	105	static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
	106	int min_uV, int max_uV)
	107	{
	108	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	109	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	110	uint8_t val, mask;
	111
	112	if (check_range(info, min_uV, max_uV)) {
471d8d49	113	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	114	return -EINVAL;
	115	}
	116
	117	val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	118	val <<= info->vol_shift;
	119	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	120
	121	return da903x_update(da9034_dev, info->vol_reg, val, mask);
	122	}
	123
	124	static int da903x_get_voltage(struct regulator_dev *rdev)
	125	{
	126	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	127	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	128	uint8_t val, mask;
	129	int ret;
	130
	131	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	132	if (ret)
	133	return ret;
	134
	135	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	136	val = (val & mask) >> info->vol_shift;
	137
	138	return info->min_uV + info->step_uV * val;
	139	}
	140
	141	static int da903x_enable(struct regulator_dev *rdev)
	142	{
	143	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	144	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	145
	146	return da903x_set_bits(da9034_dev, info->enable_reg,
	147	1 << info->enable_bit);
	148	}
	149
	150	static int da903x_disable(struct regulator_dev *rdev)
	151	{
	152	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	153	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	154
	155	return da903x_clr_bits(da9034_dev, info->enable_reg,
	156	1 << info->enable_bit);
	157	}
	158
	159	static int da903x_is_enabled(struct regulator_dev *rdev)
	160	{
	161	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	162	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	163	uint8_t reg_val;
	164	int ret;
	165
	166	ret = da903x_read(da9034_dev, info->enable_reg, &reg_val);
	167	if (ret)
	168	return ret;
	169
96186904	170	return !!(reg_val & (1 << info->enable_bit));
129eef96 EM	171	}
	172
	173	/* DA9030 specific operations */
	174	static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
	175	int min_uV, int max_uV)
	176	{
	177	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	178	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	179	uint8_t val, mask;
	180	int ret;
	181
	182	if (check_range(info, min_uV, max_uV)) {
471d8d49	183	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	184	return -EINVAL;
	185	}
	186
	187	val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	188	val <<= info->vol_shift;
	189	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	190	val \|= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
	191	mask \|= DA9030_LDO_UNLOCK_MASK;
	192
	193	/* write twice */
	194	ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
	195	if (ret)
	196	return ret;
	197
	198	return da903x_update(da903x_dev, info->vol_reg, val, mask);
	199	}
	200
	201	static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
	202	int min_uV, int max_uV)
	203	{
	204	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	205	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	206	uint8_t val, mask;
	207	int thresh;
	208
	209	if (check_range(info, min_uV, max_uV)) {
471d8d49	210	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	211	return -EINVAL;
	212	}
	213
	214	thresh = (info->max_uV + info->min_uV) / 2;
	215	if (min_uV < thresh) {
	216	val = (thresh - min_uV + info->step_uV - 1) / info->step_uV;
	217	val \|= 0x4;
	218	} else {
	219	val = (min_uV - thresh + info->step_uV - 1) / info->step_uV;
	220	}
	221
	222	val <<= info->vol_shift;
	223	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	224
	225	return da903x_update(da903x_dev, info->vol_reg, val, mask);
	226	}
	227
	228	static int da9030_get_ldo14_voltage(struct regulator_dev *rdev)
	229	{
	230	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	231	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	232	uint8_t val, mask;
	233	int ret;
	234
	235	ret = da903x_read(da903x_dev, info->vol_reg, &val);
	236	if (ret)
	237	return ret;
	238
	239	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	240	val = (val & mask) >> info->vol_shift;
	241
	242	if (val & 0x4)
	243	return info->min_uV + info->step_uV * (3 - (val & ~0x4));
	244	else
	245	return (info->max_uV + info->min_uV) / 2 +
	246	info->step_uV * (val & ~0x4);
	247	}
	248
	249	/* DA9034 specific operations */
	250	static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
	251	int min_uV, int max_uV)
	252	{
	253	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	254	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	255	uint8_t val, mask;
	256	int ret;
	257
	258	if (check_range(info, min_uV, max_uV)) {
471d8d49	259	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	260	return -EINVAL;
	261	}
	262
	263	val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	264	val <<= info->vol_shift;
	265	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	266
	267	ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
	268	if (ret)
	269	return ret;
	270
	271	ret = da903x_set_bits(da9034_dev, info->update_reg,
	272	1 << info->update_bit);
	273	return ret;
	274	}
	275
	276	static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
	277	int min_uV, int max_uV)
	278	{
	279	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	280	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	281	uint8_t val, mask;
	282
	283	if (check_range(info, min_uV, max_uV)) {
471d8d49	284	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	285	return -EINVAL;
	286	}
	287
	288	val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
	289	val = (val > 7 \|\| val < 20) ? 8 : val - 12;
	290	val <<= info->vol_shift;
	291	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	292
	293	return da903x_update(da9034_dev, info->vol_reg, val, mask);
	294	}
	295
	296	static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
	297	{
	298	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	299	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	300	uint8_t val, mask;
	301	int ret;
	302
	303	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	304	if (ret)
	305	return ret;
	306
	307	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	308	val = (val & mask) >> info->vol_shift;
	309
	310	if (val >= 8)
	311	return 2700000 + info->step_uV * (val - 8);
	312
	313	return info->min_uV + info->step_uV * val;
	314	}
	315
	316	static struct regulator_ops da903x_regulator_ldo_ops = {
	317	.set_voltage = da903x_set_ldo_voltage,
	318	.get_voltage = da903x_get_voltage,
	319	.enable = da903x_enable,
	320	.disable = da903x_disable,
	321	.is_enabled = da903x_is_enabled,
	322	};
	323
	324	/* NOTE: this is dedicated for the insane DA9030 LDO14 */
	325	static struct regulator_ops da9030_regulator_ldo14_ops = {
	326	.set_voltage = da9030_set_ldo14_voltage,
	327	.get_voltage = da9030_get_ldo14_voltage,
	328	.enable = da903x_enable,
	329	.disable = da903x_disable,
	330	.is_enabled = da903x_is_enabled,
	331	};
	332
	333	/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
	334	static struct regulator_ops da9030_regulator_ldo1_15_ops = {
	335	.set_voltage = da9030_set_ldo1_15_voltage,
	336	.get_voltage = da903x_get_voltage,
	337	.enable = da903x_enable,
	338	.disable = da903x_disable,
	339	.is_enabled = da903x_is_enabled,
	340	};
	341
	342	static struct regulator_ops da9034_regulator_dvc_ops = {
	343	.set_voltage = da9034_set_dvc_voltage,
	344	.get_voltage = da903x_get_voltage,
	345	.enable = da903x_enable,
	346	.disable = da903x_disable,
	347	.is_enabled = da903x_is_enabled,
	348	};
	349
	350	/* NOTE: this is dedicated for the insane LDO12 */
	351	static struct regulator_ops da9034_regulator_ldo12_ops = {
	352	.set_voltage = da9034_set_ldo12_voltage,
	353	.get_voltage = da9034_get_ldo12_voltage,
	354	.enable = da903x_enable,
	355	.disable = da903x_disable,
	356	.is_enabled = da903x_is_enabled,
	357	};
	358
	359	#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	360	{ \
	361	.desc = { \
	362	.name = "LDO" #_id, \
	363	.ops = &da903x_regulator_ldo_ops, \
364	.type = REGULATOR_VOLTAGE, \
365	.id = _pmic##_ID_LDO##_id, \
366	.owner = THIS_MODULE, \
367	}, \
368	.min_uV = (min) * 1000, \
369	.max_uV = (max) * 1000, \
370	.step_uV = (step) * 1000, \
371	.vol_reg = _pmic##_##vreg, \
372	.vol_shift = (shift), \
373	.vol_nbits = (nbits), \
374	.enable_reg = _pmic##_##ereg, \
375	.enable_bit = (ebit), \
376	}
377
378	#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
379	{ \
380	.desc = { \
381	.name = #_id, \
382	.ops = &da9034_regulator_dvc_ops, \
383	.type = REGULATOR_VOLTAGE, \
384	.id = DA9034_ID_##_id, \
385	.owner = THIS_MODULE, \
386	}, \
387	.min_uV = (min) * 1000, \
388	.max_uV = (max) * 1000, \
389	.step_uV = (step) * 1000, \
390	.vol_reg = DA9034_##vreg, \
391	.vol_shift = (0), \
392	.vol_nbits = (nbits), \
393	.update_reg = DA9034_##ureg, \
394	.update_bit = (ubit), \
395	.enable_reg = DA9034_##ereg, \
396	.enable_bit = (ebit), \
397	}
398
0198d116 HZ	399	#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	400	{ \
	401	.desc = { \
	402	.name = #_id, \
	403	.ops = &da9034_regulator_dvc_ops, \
	404	.type = REGULATOR_VOLTAGE, \
	405	.id = DA9035_ID_##_id, \
	406	.owner = THIS_MODULE, \
	407	}, \
	408	.min_uV = (min) * 1000, \
	409	.max_uV = (max) * 1000, \
	410	.step_uV = (step) * 1000, \
	411	.vol_reg = DA9035_##vreg, \
	412	.vol_shift = (0), \
	413	.vol_nbits = (nbits), \
	414	.update_reg = DA9035_##ureg, \
	415	.update_bit = (ubit), \
	416	.enable_reg = DA9035_##ereg, \
	417	.enable_bit = (ebit), \
	418	}
	419
129eef96 EM	420	#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	421	DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	422
	423	#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	424	DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	425
	426	static struct da903x_regulator_info da903x_regulator_info[] = {
	427	/* DA9030 */
	428	DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
	429	DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
	430	DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
	431	DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
	432	DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
	433	DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
	434	DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
	435	DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
	436	DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
	437	DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
	438	DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
	439	DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
	440	DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
	441	DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
	442	DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
	443	DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
	444	DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
	445	DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
	446	DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
	447
	448	/* DA9034 */
	449	DA9034_DVC(BUCK1, 725, 1500, 25, ADTV1, 5, VCC1, 0, OVER1, 0),
	450	DA9034_DVC(BUCK2, 725, 1500, 25, CDTV1, 5, VCC1, 2, OVER1, 1),
	451	DA9034_DVC(LDO2, 725, 1500, 25, SDTV1, 5, VCC1, 4, OVER1, 2),
	452	DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
	453
	454	DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
	455	DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
	456	DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
	457	DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
	458	DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
	459	DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
	460	DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
	461	DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
	462	DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
	463	DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
	464	DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
	465	DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
	466	DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
0198d116 HZ	467
	468	/* DA9035 */
	469	DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
129eef96 EM	470	};
	471
	472	static inline struct da903x_regulator_info *find_regulator_info(int id)
	473	{
	474	struct da903x_regulator_info *ri;
	475	int i;
	476
	477	for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
	478	ri = &da903x_regulator_info[i];
	479	if (ri->desc.id == id)
	480	return ri;
	481	}
	482	return NULL;
	483	}
	484
	485	static int __devinit da903x_regulator_probe(struct platform_device *pdev)
	486	{
	487	struct da903x_regulator_info *ri = NULL;
	488	struct regulator_dev *rdev;
	489
	490	ri = find_regulator_info(pdev->id);
	491	if (ri == NULL) {
	492	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	493	return -EINVAL;
	494	}
	495
	496	/* Workaround for the weird LDO12 voltage setting */
	497	if (ri->desc.id == DA9034_ID_LDO12)
	498	ri->desc.ops = &da9034_regulator_ldo12_ops;
	499
	500	if (ri->desc.id == DA9030_ID_LDO14)
	501	ri->desc.ops = &da9030_regulator_ldo14_ops;
	502
	503	if (ri->desc.id == DA9030_ID_LDO1 \|\| ri->desc.id == DA9030_ID_LDO15)
	504	ri->desc.ops = &da9030_regulator_ldo1_15_ops;
	505
0527100f MB	506	rdev = regulator_register(&ri->desc, &pdev->dev,
0527100f MB	507	pdev->dev.platform_data, ri);
129eef96 EM	508	if (IS_ERR(rdev)) {
	509	dev_err(&pdev->dev, "failed to register regulator %s\n",
	510	ri->desc.name);
	511	return PTR_ERR(rdev);
	512	}
	513
	514	platform_set_drvdata(pdev, rdev);
	515	return 0;
	516	}
	517
	518	static int __devexit da903x_regulator_remove(struct platform_device *pdev)
	519	{
	520	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	521
	522	regulator_unregister(rdev);
	523	return 0;
	524	}
	525
	526	static struct platform_driver da903x_regulator_driver = {
	527	.driver = {
	528	.name = "da903x-regulator",
	529	.owner = THIS_MODULE,
	530	},
	531	.probe = da903x_regulator_probe,
5b4662f0	532	.remove = __devexit_p(da903x_regulator_remove),
129eef96 EM	533	};
	534
	535	static int __init da903x_regulator_init(void)
	536	{
	537	return platform_driver_register(&da903x_regulator_driver);
	538	}
5a1b22be	539	subsys_initcall(da903x_regulator_init);
129eef96 EM	540
	541	static void __exit da903x_regulator_exit(void)
	542	{
	543	platform_driver_unregister(&da903x_regulator_driver);
	544	}
	545	module_exit(da903x_regulator_exit);
	546
	547	MODULE_LICENSE("GPL");
	548	MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
	549	"Mike Rapoport <mike@compulab.co.il>");
	550	MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
	551	MODULE_ALIAS("platform:da903x-regulator");