[deliverable/linux.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	max_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->desc.min_uV || min_uV > info->max_uV)
		return -EINVAL;

	return 0;
}

/* DA9030/DA9034 common operations */
static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	struct device *da9034_dev = to_da903x_dev(rdev);
	uint8_t val, mask;

	val = selector << 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));
}

/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev,
					  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;

	val = selector << 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_map_ldo14_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	int thresh, sel;

	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->desc.min_uV) / 2;
	if (min_uV < thresh) {
		sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step);
		sel |= 0x4;
	} else {
		sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step);
	}

	return sel;
}

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

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

	return volt;
}

/* DA9034 specific operations */
static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev,
				      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;

	val = selector << 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_map_ldo12_voltage(struct regulator_dev *rdev,
				    int min_uV, int max_uV)
{
	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	int sel;

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

	sel = DIV_ROUND_UP(min_uV - info->desc.min_uV, info->desc.uV_step);
	sel = (sel >= 20) ? sel - 12 : ((sel > 7) ? 8 : sel);

	return sel;
}

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 + rdev->desc->uV_step * (selector - 8);
	else
		volt = rdev->desc->min_uV + rdev->desc->uV_step * selector;

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

	return volt;
}

static struct regulator_ops da903x_regulator_ldo_ops = {
	.set_voltage_sel = da903x_set_voltage_sel,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= regulator_list_voltage_linear,
	.map_voltage	= regulator_map_voltage_linear,
	.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_sel = da903x_set_voltage_sel,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= da9030_list_ldo14_voltage,
	.map_voltage	= da9030_map_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_sel = da9030_set_ldo1_15_voltage_sel,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= regulator_list_voltage_linear,
	.map_voltage	= regulator_map_voltage_linear,
	.enable		= da903x_enable,
	.disable	= da903x_disable,
	.is_enabled	= da903x_is_enabled,
};

static struct regulator_ops da9034_regulator_dvc_ops = {
	.set_voltage_sel = da9034_set_dvc_voltage_sel,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= regulator_list_voltage_linear,
	.map_voltage	= regulator_map_voltage_linear,
	.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_sel = da903x_set_voltage_sel,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= da9034_list_ldo12_voltage,
	.map_voltage	= da9034_map_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,				\
		.uV_step = (step) * 1000,				\
	},								\
	.max_uV		= (max) * 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,					\
		.uV_step = (step) * 1000,				\
	},								\
	.max_uV		= (max) * 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
129eef96	79	int max_uV;
129eef96 EM	80	int vol_reg;
	81	int vol_shift;
	82	int vol_nbits;
	83	int update_reg;
	84	int update_bit;
	85	int enable_reg;
	86	int enable_bit;
	87	};
	88
1841c0f2 JC	89	static inline struct device to_da903x_dev(struct regulator_dev rdev)
	90	{
	91	return rdev_get_dev(rdev)->parent->parent;
	92	}
	93
129eef96 EM	94	static inline int check_range(struct da903x_regulator_info *info,
	95	int min_uV, int max_uV)
	96	{
70b4e786	97	if (min_uV < info->desc.min_uV \|\| min_uV > info->max_uV)
129eef96 EM	98	return -EINVAL;
	99
	100	return 0;
	101	}
	102
	103	/* DA9030/DA9034 common operations */
bae5e9c3	104	static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
129eef96 EM	105	{
129eef96 EM	106	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	107	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	108	uint8_t val, mask;
129eef96 EM	109
c972a029	110	val = selector << info->vol_shift;
129eef96 EM	111	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	112
	113	return da903x_update(da9034_dev, info->vol_reg, val, mask);
	114	}
	115
9447f35a	116	static int da903x_get_voltage_sel(struct regulator_dev *rdev)
129eef96 EM	117	{
129eef96 EM	118	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	119	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	120	uint8_t val, mask;
	121	int ret;
	122
	123	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	124	if (ret)
	125	return ret;
	126
	127	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	128	val = (val & mask) >> info->vol_shift;
	129
9447f35a	130	return val;
129eef96 EM	131	}
	132
	133	static int da903x_enable(struct regulator_dev *rdev)
	134	{
	135	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	136	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	137
	138	return da903x_set_bits(da9034_dev, info->enable_reg,
	139	1 << info->enable_bit);
	140	}
	141
	142	static int da903x_disable(struct regulator_dev *rdev)
	143	{
	144	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	145	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	146
	147	return da903x_clr_bits(da9034_dev, info->enable_reg,
	148	1 << info->enable_bit);
	149	}
	150
	151	static int da903x_is_enabled(struct regulator_dev *rdev)
	152	{
	153	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	154	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	155	uint8_t reg_val;
	156	int ret;
	157
	158	ret = da903x_read(da9034_dev, info->enable_reg, &reg_val);
	159	if (ret)
	160	return ret;
	161
96186904	162	return !!(reg_val & (1 << info->enable_bit));
129eef96 EM	163	}
	164
	165	/* DA9030 specific operations */
c972a029 AL	166	static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev,
c972a029 AL	167	unsigned selector)
129eef96 EM	168	{
129eef96 EM	169	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	170	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	171	uint8_t val, mask;
	172	int ret;
	173
c972a029	174	val = selector << info->vol_shift;
129eef96 EM	175	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	176	val \|= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
	177	mask \|= DA9030_LDO_UNLOCK_MASK;
	178
	179	/* write twice */
	180	ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
	181	if (ret)
	182	return ret;
	183
	184	return da903x_update(da903x_dev, info->vol_reg, val, mask);
	185	}
	186
c972a029 AL	187	static int da9030_map_ldo14_voltage(struct regulator_dev *rdev,
	188	int min_uV, int max_uV)
	189	{
	190	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	191	int thresh, sel;
129eef96 EM	192
129eef96 EM	193	if (check_range(info, min_uV, max_uV)) {
471d8d49	194	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	195	return -EINVAL;
	196	}
	197
70b4e786	198	thresh = (info->max_uV + info->desc.min_uV) / 2;
129eef96	199	if (min_uV < thresh) {
c972a029 AL	200	sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step);
c972a029 AL	201	sel \|= 0x4;
129eef96	202	} else {
c972a029	203	sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step);
129eef96 EM	204	}
129eef96 EM	205
c972a029	206	return sel;
129eef96 EM	207	}
129eef96 EM	208
d4eb56a1 AL	209	static int da9030_list_ldo14_voltage(struct regulator_dev *rdev,
	210	unsigned selector)
	211	{
	212	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	213	int volt;
	214
	215	if (selector & 0x4)
70b4e786 AL	216	volt = rdev->desc->min_uV +
70b4e786 AL	217	rdev->desc->uV_step * (3 - (selector & ~0x4));
d4eb56a1	218	else
70b4e786 AL	219	volt = (info->max_uV + rdev->desc->min_uV) / 2 +
70b4e786 AL	220	rdev->desc->uV_step * (selector & ~0x4);
d4eb56a1 AL	221
	222	if (volt > info->max_uV)
	223	return -EINVAL;
	224
	225	return volt;
	226	}
	227
129eef96	228	/* DA9034 specific operations */
c972a029 AL	229	static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev,
c972a029 AL	230	unsigned selector)
129eef96 EM	231	{
129eef96 EM	232	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	233	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	234	uint8_t val, mask;
	235	int ret;
	236
c972a029	237	val = selector << info->vol_shift;
129eef96 EM	238	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	239
	240	ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
	241	if (ret)
	242	return ret;
	243
	244	ret = da903x_set_bits(da9034_dev, info->update_reg,
	245	1 << info->update_bit);
	246	return ret;
	247	}
	248
c972a029 AL	249	static int da9034_map_ldo12_voltage(struct regulator_dev *rdev,
	250	int min_uV, int max_uV)
	251	{
	252	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	253	int sel;
	254
129eef96	255	if (check_range(info, min_uV, max_uV)) {
471d8d49	256	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	257	return -EINVAL;
	258	}
	259
c972a029 AL	260	sel = DIV_ROUND_UP(min_uV - info->desc.min_uV, info->desc.uV_step);
c972a029 AL	261	sel = (sel >= 20) ? sel - 12 : ((sel > 7) ? 8 : sel);
129eef96	262
c972a029	263	return sel;
129eef96 EM	264	}
129eef96 EM	265
c1b60873 HZ	266	static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
	267	unsigned selector)
	268	{
9447f35a AL	269	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	270	int volt;
	271
	272	if (selector >= 8)
70b4e786	273	volt = 2700000 + rdev->desc->uV_step * (selector - 8);
9447f35a	274	else
70b4e786	275	volt = rdev->desc->min_uV + rdev->desc->uV_step * selector;
9447f35a AL	276
9447f35a AL	277	if (volt > info->max_uV)
c1b60873	278	return -EINVAL;
9447f35a AL	279
9447f35a AL	280	return volt;
c1b60873 HZ	281	}
c1b60873 HZ	282
129eef96	283	static struct regulator_ops da903x_regulator_ldo_ops = {
bae5e9c3	284	.set_voltage_sel = da903x_set_voltage_sel,
9447f35a	285	.get_voltage_sel = da903x_get_voltage_sel,
70b4e786	286	.list_voltage = regulator_list_voltage_linear,
c972a029	287	.map_voltage = regulator_map_voltage_linear,
129eef96 EM	288	.enable = da903x_enable,
	289	.disable = da903x_disable,
	290	.is_enabled = da903x_is_enabled,
	291	};
	292
	293	/* NOTE: this is dedicated for the insane DA9030 LDO14 */
	294	static struct regulator_ops da9030_regulator_ldo14_ops = {
bae5e9c3 AL	295	.set_voltage_sel = da903x_set_voltage_sel,
bae5e9c3 AL	296	.get_voltage_sel = da903x_get_voltage_sel,
d4eb56a1	297	.list_voltage = da9030_list_ldo14_voltage,
c972a029	298	.map_voltage = da9030_map_ldo14_voltage,
129eef96 EM	299	.enable = da903x_enable,
	300	.disable = da903x_disable,
	301	.is_enabled = da903x_is_enabled,
	302	};
	303
	304	/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
	305	static struct regulator_ops da9030_regulator_ldo1_15_ops = {
c972a029	306	.set_voltage_sel = da9030_set_ldo1_15_voltage_sel,
9447f35a	307	.get_voltage_sel = da903x_get_voltage_sel,
70b4e786	308	.list_voltage = regulator_list_voltage_linear,
c972a029	309	.map_voltage = regulator_map_voltage_linear,
129eef96 EM	310	.enable = da903x_enable,
	311	.disable = da903x_disable,
	312	.is_enabled = da903x_is_enabled,
	313	};
	314
	315	static struct regulator_ops da9034_regulator_dvc_ops = {
c972a029	316	.set_voltage_sel = da9034_set_dvc_voltage_sel,
9447f35a	317	.get_voltage_sel = da903x_get_voltage_sel,
70b4e786	318	.list_voltage = regulator_list_voltage_linear,
c972a029	319	.map_voltage = regulator_map_voltage_linear,
129eef96 EM	320	.enable = da903x_enable,
	321	.disable = da903x_disable,
	322	.is_enabled = da903x_is_enabled,
	323	};
	324
	325	/* NOTE: this is dedicated for the insane LDO12 */
	326	static struct regulator_ops da9034_regulator_ldo12_ops = {
bae5e9c3 AL	327	.set_voltage_sel = da903x_set_voltage_sel,
bae5e9c3 AL	328	.get_voltage_sel = da903x_get_voltage_sel,
c1b60873	329	.list_voltage = da9034_list_ldo12_voltage,
c972a029	330	.map_voltage = da9034_map_ldo12_voltage,
129eef96 EM	331	.enable = da903x_enable,
	332	.disable = da903x_disable,
	333	.is_enabled = da903x_is_enabled,
	334	};
	335
	336	#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	337	{ \
	338	.desc = { \
	339	.name = "LDO" #_id, \
	340	.ops = &da903x_regulator_ldo_ops, \
	341	.type = REGULATOR_VOLTAGE, \
	342	.id = _pmic##_ID_LDO##_id, \
c1b60873	343	.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
129eef96	344	.owner = THIS_MODULE, \
70b4e786 AL	345	.min_uV = (min) * 1000, \
70b4e786 AL	346	.uV_step = (step) * 1000, \
129eef96	347	}, \
129eef96	348	.max_uV = (max) * 1000, \
129eef96 EM	349	.vol_reg = _pmic##_##vreg, \
	350	.vol_shift = (shift), \
	351	.vol_nbits = (nbits), \
	352	.enable_reg = _pmic##_##ereg, \
	353	.enable_bit = (ebit), \
	354	}
	355
c6db1828	356	#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
fc4f42e7 HZ	357	{ \
	358	.desc = { \
	359	.name = #_id, \
	360	.ops = &da9034_regulator_dvc_ops, \
	361	.type = REGULATOR_VOLTAGE, \
c6db1828	362	.id = _pmic##_ID_##_id, \
c1b60873	363	.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
fc4f42e7	364	.owner = THIS_MODULE, \
70b4e786 AL	365	.min_uV = (min) * 1000, \
70b4e786 AL	366	.uV_step = (step) * 1000, \
fc4f42e7	367	}, \
fc4f42e7	368	.max_uV = (max) * 1000, \
c6db1828	369	.vol_reg = _pmic##_##vreg, \
0198d116 HZ	370	.vol_shift = (0), \
0198d116 HZ	371	.vol_nbits = (nbits), \
c6db1828	372	.update_reg = _pmic##_##ureg, \
0198d116	373	.update_bit = (ubit), \
c6db1828	374	.enable_reg = _pmic##_##ereg, \
0198d116 HZ	375	.enable_bit = (ebit), \
	376	}
	377
129eef96 EM	378	#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	379	DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	380
	381	#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	382	DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	383
c6db1828 MR	384	#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	385	DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
	386	ereg, ebit)
	387
	388	#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	389	DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
	390	ereg, ebit)
	391
	392	#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	393	DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
	394	ereg, ebit)
	395
129eef96 EM	396	static struct da903x_regulator_info da903x_regulator_info[] = {
129eef96 EM	397	/* DA9030 */
fc4f42e7 HZ	398	DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
fc4f42e7 HZ	399
129eef96 EM	400	DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
	401	DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
	402	DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
	403	DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
	404	DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
	405	DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
	406	DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
	407	DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
	408	DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
	409	DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
	410	DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
	411	DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
	412	DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
	413	DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
	414	DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
	415	DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
	416	DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
	417	DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
	418	DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
	419
	420	/* DA9034 */
e88267e1 HZ	421	DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
	422	DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
	423	DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
129eef96 EM	424	DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
	425
	426	DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
	427	DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
	428	DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
	429	DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
	430	DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
	431	DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
	432	DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
	433	DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
	434	DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
	435	DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
	436	DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
	437	DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
	438	DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
0198d116 HZ	439
	440	/* DA9035 */
	441	DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
129eef96 EM	442	};
	443
	444	static inline struct da903x_regulator_info *find_regulator_info(int id)
	445	{
	446	struct da903x_regulator_info *ri;
	447	int i;
	448
	449	for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
	450	ri = &da903x_regulator_info[i];
	451	if (ri->desc.id == id)
	452	return ri;
	453	}
	454	return NULL;
	455	}
	456
	457	static int __devinit da903x_regulator_probe(struct platform_device *pdev)
	458	{
	459	struct da903x_regulator_info *ri = NULL;
	460	struct regulator_dev *rdev;
c172708d	461	struct regulator_config config = { };
129eef96 EM	462
	463	ri = find_regulator_info(pdev->id);
	464	if (ri == NULL) {
	465	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	466	return -EINVAL;
	467	}
	468
	469	/* Workaround for the weird LDO12 voltage setting */
c1b60873	470	if (ri->desc.id == DA9034_ID_LDO12) {
129eef96	471	ri->desc.ops = &da9034_regulator_ldo12_ops;
9447f35a	472	ri->desc.n_voltages = 16;
c1b60873	473	}
129eef96 EM	474
	475	if (ri->desc.id == DA9030_ID_LDO14)
	476	ri->desc.ops = &da9030_regulator_ldo14_ops;
	477
	478	if (ri->desc.id == DA9030_ID_LDO1 \|\| ri->desc.id == DA9030_ID_LDO15)
	479	ri->desc.ops = &da9030_regulator_ldo1_15_ops;
	480
c172708d	481	config.dev = &pdev->dev;
fe53d18d	482	config.init_data = pdev->dev.platform_data;
c172708d MB	483	config.driver_data = ri;
	484
	485	rdev = regulator_register(&ri->desc, &config);
129eef96 EM	486	if (IS_ERR(rdev)) {
	487	dev_err(&pdev->dev, "failed to register regulator %s\n",
	488	ri->desc.name);
	489	return PTR_ERR(rdev);
	490	}
	491
	492	platform_set_drvdata(pdev, rdev);
	493	return 0;
	494	}
	495
	496	static int __devexit da903x_regulator_remove(struct platform_device *pdev)
	497	{
	498	struct regulator_dev *rdev = platform_get_drvdata(pdev);
	499
	500	regulator_unregister(rdev);
	501	return 0;
	502	}
	503
	504	static struct platform_driver da903x_regulator_driver = {
	505	.driver = {
	506	.name = "da903x-regulator",
	507	.owner = THIS_MODULE,
	508	},
	509	.probe = da903x_regulator_probe,
5b4662f0	510	.remove = __devexit_p(da903x_regulator_remove),
129eef96 EM	511	};
	512
	513	static int __init da903x_regulator_init(void)
	514	{
	515	return platform_driver_register(&da903x_regulator_driver);
	516	}
5a1b22be	517	subsys_initcall(da903x_regulator_init);
129eef96 EM	518
	519	static void __exit da903x_regulator_exit(void)
	520	{
	521	platform_driver_unregister(&da903x_regulator_driver);
	522	}
	523	module_exit(da903x_regulator_exit);
	524
	525	MODULE_LICENSE("GPL");
	526	MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
	527	"Mike Rapoport <mike@compulab.co.il>");
	528	MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
	529	MODULE_ALIAS("platform:da903x-regulator");