Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 129eef96 authored by Eric Miao's avatar Eric Miao Committed by Liam Girdwood
Browse files

da903x: add regulator support for DA9030/DA9034 



Signed-off-by: default avatarEric Miao <eric.miao@marvell.com>
Signed-off-by: default avatarMike Rapoport <mike@compulab.co.il>
Signed-off-by: default avatarLiam Girdwood <lrg@kernel.org>
parent 9201d38b

drivers/regulator/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -72,4 +72,12 @@ config REGULATOR_WM8400 
	  This driver provides support for the voltage regulators of the

	  WM8400 AudioPlus PMIC.



config REGULATOR_DA903X

	tristate "Support regulators on Dialog Semiconductor DA9030/DA9034 PMIC"

	depends on PMIC_DA903X

	select REGULATOR

	help

	  Say y here to support the BUCKs and LDOs regulators found on

	  Dialog Semiconductor DA9030/DA9034 PMIC.



endmenu

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -10,5 +10,6 @@ obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o 
obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o

obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o

obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o

obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o



ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG

drivers/regulator/da903x.c

0 → 100644
+513 −0
Original line number Diff line number Diff line 
/*

 * 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)



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 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 = rdev_get_dev(rdev)->parent;

	uint8_t val, mask;



	if (check_range(info, min_uV, max_uV)) {

		pr_err("invalid voltage range (%d, %d) uV", 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 = rdev_get_dev(rdev)->parent;

	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 = rdev_get_dev(rdev)->parent;



	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 = rdev_get_dev(rdev)->parent;



	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 = rdev_get_dev(rdev)->parent;

	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 = rdev_get_dev(rdev)->parent;

	uint8_t val, mask;

	int ret;



	if (check_range(info, min_uV, max_uV)) {

		pr_err("invalid voltage range (%d, %d) uV", 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 = rdev_get_dev(rdev)->parent;

	uint8_t val, mask;

	int thresh;



	if (check_range(info, min_uV, max_uV)) {

		pr_err("invalid voltage range (%d, %d) uV", 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 = rdev_get_dev(rdev)->parent;

	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 = rdev_get_dev(rdev)->parent;

	uint8_t val, mask;

	int ret;



	if (check_range(info, min_uV, max_uV)) {

		pr_err("invalid voltage range (%d, %d) uV", 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 = rdev_get_dev(rdev)->parent;

	uint8_t val, mask;



	if (check_range(info, min_uV, max_uV)) {

		pr_err("invalid voltage range (%d, %d) uV", 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 = rdev_get_dev(rdev)->parent;

	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 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 */

};



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.parent, 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		= da903x_regulator_remove,

};



static int __init da903x_regulator_init(void)

{

	return platform_driver_register(&da903x_regulator_driver);

}

module_init(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");