[mirror_ubuntu-zesty-kernel.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;

	if (rdev->desc->n_voltages == 1)
		return -EINVAL;

	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;

	if (rdev->desc->n_voltages == 1)
		return 0;

	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 const struct regulator_linear_range da9034_ldo12_ranges[] = {
	REGULATOR_LINEAR_RANGE(1700000, 0, 7, 50000),
	REGULATOR_LINEAR_RANGE(2700000, 8, 15, 50000),
};

static const 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 const 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 const 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 const 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 const struct regulator_ops da9034_regulator_ldo12_ops = {
	.set_voltage_sel = da903x_set_voltage_sel,
	.get_voltage_sel = da903x_get_voltage_sel,
	.list_voltage	= regulator_list_voltage_linear_range,
	.map_voltage	= regulator_map_voltage_linear_range,
	.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 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;
		ri->desc.linear_ranges = da9034_ldo12_ranges;
		ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges);
	}

	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 = dev_get_platdata(&pdev->dev);
	config.driver_data = ri;

	rdev = devm_regulator_register(&pdev->dev, &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 struct platform_driver da903x_regulator_driver = {
	.driver	= {
		.name	= "da903x-regulator",
	},
	.probe		= da903x_regulator_probe,
};

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
ee3ed6ef AL	110	if (rdev->desc->n_voltages == 1)
	111	return -EINVAL;
	112
c972a029	113	val = selector << info->vol_shift;
129eef96 EM	114	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	115
	116	return da903x_update(da9034_dev, info->vol_reg, val, mask);
	117	}
	118
9447f35a	119	static int da903x_get_voltage_sel(struct regulator_dev *rdev)
129eef96 EM	120	{
129eef96 EM	121	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	122	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	123	uint8_t val, mask;
	124	int ret;
	125
ee3ed6ef AL	126	if (rdev->desc->n_voltages == 1)
	127	return 0;
	128
129eef96 EM	129	ret = da903x_read(da9034_dev, info->vol_reg, &val);
	130	if (ret)
	131	return ret;
	132
	133	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	134	val = (val & mask) >> info->vol_shift;
	135
9447f35a	136	return val;
129eef96 EM	137	}
	138
	139	static int da903x_enable(struct regulator_dev *rdev)
	140	{
	141	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	142	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	143
	144	return da903x_set_bits(da9034_dev, info->enable_reg,
	145	1 << info->enable_bit);
	146	}
	147
	148	static int da903x_disable(struct regulator_dev *rdev)
	149	{
	150	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	151	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	152
	153	return da903x_clr_bits(da9034_dev, info->enable_reg,
	154	1 << info->enable_bit);
	155	}
	156
	157	static int da903x_is_enabled(struct regulator_dev *rdev)
	158	{
	159	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	160	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	161	uint8_t reg_val;
	162	int ret;
	163
	164	ret = da903x_read(da9034_dev, info->enable_reg, &reg_val);
	165	if (ret)
	166	return ret;
	167
96186904	168	return !!(reg_val & (1 << info->enable_bit));
129eef96 EM	169	}
	170
	171	/* DA9030 specific operations */
c972a029 AL	172	static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev,
c972a029 AL	173	unsigned selector)
129eef96 EM	174	{
129eef96 EM	175	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	176	struct device *da903x_dev = to_da903x_dev(rdev);
129eef96 EM	177	uint8_t val, mask;
	178	int ret;
	179
c972a029	180	val = selector << info->vol_shift;
129eef96 EM	181	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	182	val \|= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
	183	mask \|= DA9030_LDO_UNLOCK_MASK;
	184
	185	/* write twice */
	186	ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
	187	if (ret)
	188	return ret;
	189
	190	return da903x_update(da903x_dev, info->vol_reg, val, mask);
	191	}
	192
c972a029 AL	193	static int da9030_map_ldo14_voltage(struct regulator_dev *rdev,
	194	int min_uV, int max_uV)
	195	{
	196	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	197	int thresh, sel;
129eef96 EM	198
129eef96 EM	199	if (check_range(info, min_uV, max_uV)) {
471d8d49	200	pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
129eef96 EM	201	return -EINVAL;
	202	}
	203
70b4e786	204	thresh = (info->max_uV + info->desc.min_uV) / 2;
129eef96	205	if (min_uV < thresh) {
c972a029 AL	206	sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step);
c972a029 AL	207	sel \|= 0x4;
129eef96	208	} else {
c972a029	209	sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step);
129eef96 EM	210	}
129eef96 EM	211
c972a029	212	return sel;
129eef96 EM	213	}
129eef96 EM	214
d4eb56a1 AL	215	static int da9030_list_ldo14_voltage(struct regulator_dev *rdev,
	216	unsigned selector)
	217	{
	218	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
	219	int volt;
	220
	221	if (selector & 0x4)
70b4e786 AL	222	volt = rdev->desc->min_uV +
70b4e786 AL	223	rdev->desc->uV_step * (3 - (selector & ~0x4));
d4eb56a1	224	else
70b4e786 AL	225	volt = (info->max_uV + rdev->desc->min_uV) / 2 +
70b4e786 AL	226	rdev->desc->uV_step * (selector & ~0x4);
d4eb56a1 AL	227
	228	if (volt > info->max_uV)
	229	return -EINVAL;
	230
	231	return volt;
	232	}
	233
129eef96	234	/* DA9034 specific operations */
c972a029 AL	235	static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev,
c972a029 AL	236	unsigned selector)
129eef96 EM	237	{
129eef96 EM	238	struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
1841c0f2	239	struct device *da9034_dev = to_da903x_dev(rdev);
129eef96 EM	240	uint8_t val, mask;
	241	int ret;
	242
c972a029	243	val = selector << info->vol_shift;
129eef96 EM	244	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
	245
	246	ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
	247	if (ret)
	248	return ret;
	249
	250	ret = da903x_set_bits(da9034_dev, info->update_reg,
	251	1 << info->update_bit);
	252	return ret;
	253	}
	254
550bf893	255	static const struct regulator_linear_range da9034_ldo12_ranges[] = {
8828bae4 AL	256	REGULATOR_LINEAR_RANGE(1700000, 0, 7, 50000),
8828bae4 AL	257	REGULATOR_LINEAR_RANGE(2700000, 8, 15, 50000),
550bf893	258	};
c1b60873	259
71242b49	260	static const struct regulator_ops da903x_regulator_ldo_ops = {
bae5e9c3	261	.set_voltage_sel = da903x_set_voltage_sel,
9447f35a	262	.get_voltage_sel = da903x_get_voltage_sel,
70b4e786	263	.list_voltage = regulator_list_voltage_linear,
c972a029	264	.map_voltage = regulator_map_voltage_linear,
129eef96 EM	265	.enable = da903x_enable,
	266	.disable = da903x_disable,
	267	.is_enabled = da903x_is_enabled,
	268	};
	269
	270	/* NOTE: this is dedicated for the insane DA9030 LDO14 */
71242b49	271	static const struct regulator_ops da9030_regulator_ldo14_ops = {
bae5e9c3 AL	272	.set_voltage_sel = da903x_set_voltage_sel,
bae5e9c3 AL	273	.get_voltage_sel = da903x_get_voltage_sel,
d4eb56a1	274	.list_voltage = da9030_list_ldo14_voltage,
c972a029	275	.map_voltage = da9030_map_ldo14_voltage,
129eef96 EM	276	.enable = da903x_enable,
	277	.disable = da903x_disable,
	278	.is_enabled = da903x_is_enabled,
	279	};
	280
	281	/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
71242b49	282	static const struct regulator_ops da9030_regulator_ldo1_15_ops = {
c972a029	283	.set_voltage_sel = da9030_set_ldo1_15_voltage_sel,
9447f35a	284	.get_voltage_sel = da903x_get_voltage_sel,
70b4e786	285	.list_voltage = regulator_list_voltage_linear,
c972a029	286	.map_voltage = regulator_map_voltage_linear,
129eef96 EM	287	.enable = da903x_enable,
	288	.disable = da903x_disable,
	289	.is_enabled = da903x_is_enabled,
	290	};
	291
71242b49	292	static const struct regulator_ops da9034_regulator_dvc_ops = {
c972a029	293	.set_voltage_sel = da9034_set_dvc_voltage_sel,
9447f35a	294	.get_voltage_sel = da903x_get_voltage_sel,
70b4e786	295	.list_voltage = regulator_list_voltage_linear,
c972a029	296	.map_voltage = regulator_map_voltage_linear,
129eef96 EM	297	.enable = da903x_enable,
	298	.disable = da903x_disable,
	299	.is_enabled = da903x_is_enabled,
	300	};
	301
	302	/* NOTE: this is dedicated for the insane LDO12 */
71242b49	303	static const struct regulator_ops da9034_regulator_ldo12_ops = {
bae5e9c3 AL	304	.set_voltage_sel = da903x_set_voltage_sel,
bae5e9c3 AL	305	.get_voltage_sel = da903x_get_voltage_sel,
550bf893 AL	306	.list_voltage = regulator_list_voltage_linear_range,
550bf893 AL	307	.map_voltage = regulator_map_voltage_linear_range,
129eef96 EM	308	.enable = da903x_enable,
	309	.disable = da903x_disable,
	310	.is_enabled = da903x_is_enabled,
	311	};
	312
	313	#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	314	{ \
	315	.desc = { \
	316	.name = "LDO" #_id, \
	317	.ops = &da903x_regulator_ldo_ops, \
	318	.type = REGULATOR_VOLTAGE, \
	319	.id = _pmic##_ID_LDO##_id, \
c1b60873	320	.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
129eef96	321	.owner = THIS_MODULE, \
70b4e786 AL	322	.min_uV = (min) * 1000, \
70b4e786 AL	323	.uV_step = (step) * 1000, \
129eef96	324	}, \
129eef96	325	.max_uV = (max) * 1000, \
129eef96 EM	326	.vol_reg = _pmic##_##vreg, \
	327	.vol_shift = (shift), \
	328	.vol_nbits = (nbits), \
	329	.enable_reg = _pmic##_##ereg, \
	330	.enable_bit = (ebit), \
	331	}
	332
c6db1828	333	#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
fc4f42e7 HZ	334	{ \
	335	.desc = { \
	336	.name = #_id, \
	337	.ops = &da9034_regulator_dvc_ops, \
	338	.type = REGULATOR_VOLTAGE, \
c6db1828	339	.id = _pmic##_ID_##_id, \
c1b60873	340	.n_voltages = (step) ? ((max - min) / step + 1) : 1, \
fc4f42e7	341	.owner = THIS_MODULE, \
70b4e786 AL	342	.min_uV = (min) * 1000, \
70b4e786 AL	343	.uV_step = (step) * 1000, \
fc4f42e7	344	}, \
fc4f42e7	345	.max_uV = (max) * 1000, \
c6db1828	346	.vol_reg = _pmic##_##vreg, \
0198d116 HZ	347	.vol_shift = (0), \
0198d116 HZ	348	.vol_nbits = (nbits), \
c6db1828	349	.update_reg = _pmic##_##ureg, \
0198d116	350	.update_bit = (ubit), \
c6db1828	351	.enable_reg = _pmic##_##ereg, \
0198d116 HZ	352	.enable_bit = (ebit), \
	353	}
	354
129eef96 EM	355	#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	356	DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	357
	358	#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
	359	DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
	360
c6db1828 MR	361	#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	362	DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
	363	ereg, ebit)
	364
	365	#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	366	DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
	367	ereg, ebit)
	368
	369	#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
	370	DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
	371	ereg, ebit)
	372
129eef96 EM	373	static struct da903x_regulator_info da903x_regulator_info[] = {
129eef96 EM	374	/* DA9030 */
fc4f42e7 HZ	375	DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
fc4f42e7 HZ	376
129eef96 EM	377	DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
	378	DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
	379	DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
	380	DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
	381	DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
	382	DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
	383	DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
	384	DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
	385	DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
	386	DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
	387	DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
	388	DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
	389	DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
	390	DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
	391	DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
	392	DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
	393	DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
	394	DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
	395	DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
	396
	397	/* DA9034 */
e88267e1 HZ	398	DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
	399	DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
	400	DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
129eef96 EM	401	DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
	402
	403	DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
	404	DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
	405	DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
	406	DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
	407	DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
	408	DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
	409	DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
	410	DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
	411	DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
	412	DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
	413	DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
	414	DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
	415	DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
0198d116 HZ	416
	417	/* DA9035 */
	418	DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
129eef96 EM	419	};
	420
	421	static inline struct da903x_regulator_info *find_regulator_info(int id)
	422	{
	423	struct da903x_regulator_info *ri;
	424	int i;
	425
	426	for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
	427	ri = &da903x_regulator_info[i];
	428	if (ri->desc.id == id)
	429	return ri;
	430	}
	431	return NULL;
	432	}
	433
a5023574	434	static int da903x_regulator_probe(struct platform_device *pdev)
129eef96 EM	435	{
	436	struct da903x_regulator_info *ri = NULL;
	437	struct regulator_dev *rdev;
c172708d	438	struct regulator_config config = { };
129eef96 EM	439
	440	ri = find_regulator_info(pdev->id);
	441	if (ri == NULL) {
	442	dev_err(&pdev->dev, "invalid regulator ID specified\n");
	443	return -EINVAL;
	444	}
	445
	446	/* Workaround for the weird LDO12 voltage setting */
c1b60873	447	if (ri->desc.id == DA9034_ID_LDO12) {
129eef96	448	ri->desc.ops = &da9034_regulator_ldo12_ops;
9447f35a	449	ri->desc.n_voltages = 16;
550bf893 AL	450	ri->desc.linear_ranges = da9034_ldo12_ranges;
550bf893 AL	451	ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges);
c1b60873	452	}
129eef96 EM	453
	454	if (ri->desc.id == DA9030_ID_LDO14)
	455	ri->desc.ops = &da9030_regulator_ldo14_ops;
	456
	457	if (ri->desc.id == DA9030_ID_LDO1 \|\| ri->desc.id == DA9030_ID_LDO15)
	458	ri->desc.ops = &da9030_regulator_ldo1_15_ops;
	459
c172708d	460	config.dev = &pdev->dev;
dff91d0b	461	config.init_data = dev_get_platdata(&pdev->dev);
c172708d MB	462	config.driver_data = ri;
c172708d MB	463
4e8d7935	464	rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
129eef96 EM	465	if (IS_ERR(rdev)) {
	466	dev_err(&pdev->dev, "failed to register regulator %s\n",
	467	ri->desc.name);
	468	return PTR_ERR(rdev);
	469	}
	470
	471	platform_set_drvdata(pdev, rdev);
	472	return 0;
	473	}
	474
129eef96 EM	475	static struct platform_driver da903x_regulator_driver = {
	476	.driver = {
	477	.name = "da903x-regulator",
129eef96 EM	478	},
129eef96 EM	479	.probe = da903x_regulator_probe,
129eef96 EM	480	};
	481
	482	static int __init da903x_regulator_init(void)
	483	{
	484	return platform_driver_register(&da903x_regulator_driver);
	485	}
5a1b22be	486	subsys_initcall(da903x_regulator_init);
129eef96 EM	487
	488	static void __exit da903x_regulator_exit(void)
	489	{
	490	platform_driver_unregister(&da903x_regulator_driver);
	491	}
	492	module_exit(da903x_regulator_exit);
	493
	494	MODULE_LICENSE("GPL");
	495	MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
	496	"Mike Rapoport <mike@compulab.co.il>");
	497	MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
	498	MODULE_ALIAS("platform:da903x-regulator");