drivers/regulator/88pm8607.c - maze/linux - Git at Google

 /*
  * Regulators driver for Marvell 88PM8607
  *
  * Copyright (C) 2009 Marvell International Ltd.
  * 	Haojian Zhuang <haojian.zhuang@marvell.com>
  *
  * 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/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/mfd/88pm860x.h>

 struct pm8607_regulator_info {
 	struct regulator_desc	desc;
 	struct pm860x_chip	*chip;
 	struct regulator_dev	*regulator;
 	struct i2c_client	*i2c;

 	unsigned int	*vol_table;
 	unsigned int	*vol_suspend;

 	int	vol_reg;
 	int	vol_shift;
 	int	vol_nbits;
 	int	update_reg;
 	int	update_bit;
 	int	enable_reg;
 	int	enable_bit;
 	int	slope_double;
 };

 static const unsigned int BUCK1_table[] = {
 	 725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
 	 925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
 	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
 	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 };

 static const unsigned int BUCK1_suspend_table[] = {
 	      0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
 };

 static const unsigned int BUCK2_table[] = {
 	      0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
 	 400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
 	 800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
 	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
 	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
 	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
 	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
 	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
 };

 static const unsigned int BUCK2_suspend_table[] = {
 	      0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
 	 400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
 	 800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
 	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
 	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
 	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
 	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
 	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
 };

 static const unsigned int BUCK3_table[] = {
               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
 };

 static const unsigned int BUCK3_suspend_table[] = {
               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 	 200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 	 400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 	 600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 	 800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
 	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
 	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
 	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
 };

 static const unsigned int LDO1_table[] = {
 	1800000, 1200000, 2800000, 0,
 };

 static const unsigned int LDO1_suspend_table[] = {
 	1800000, 1200000, 0, 0,
 };

 static const unsigned int LDO2_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 };

 static const unsigned int LDO2_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO3_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 };

 static const unsigned int LDO3_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO4_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
 };

 static const unsigned int LDO4_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
 };

 static const unsigned int LDO5_table[] = {
 	2900000, 3000000, 3100000, 3300000,
 };

 static const unsigned int LDO5_suspend_table[] = {
 	2900000, 0, 0, 0,
 };

 static const unsigned int LDO6_table[] = {
 	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
 };

 static const unsigned int LDO6_suspend_table[] = {
 	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
 };

 static const unsigned int LDO7_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO7_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO8_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO8_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO9_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 };

 static const unsigned int LDO9_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 };

 static const unsigned int LDO10_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 };

 static const unsigned int LDO10_suspend_table[] = {
 	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 };

 static const unsigned int LDO12_table[] = {
 	1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 };

 static const unsigned int LDO12_suspend_table[] = {
 	1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
 	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 };

 static const unsigned int LDO13_table[] = {
 	1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 0,
 };

 static const unsigned int LDO13_suspend_table[] = {
 	0,
 };

 static const unsigned int LDO14_table[] = {
 	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
 };

 static const unsigned int LDO14_suspend_table[] = {
 	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
 };

 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 	int ret = -EINVAL;

 	if (info->vol_table && (index < (1 << info->vol_nbits))) {
 		ret = info->vol_table[index];
 		if (info->slope_double)
 			ret <<= 1;
 	}
 	return ret;
 }

 static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 	int i, ret = -ENOENT;

 	if (info->slope_double) {
 		min_uV = min_uV >> 1;
 		max_uV = max_uV >> 1;
 	}
 	if (info->vol_table) {
 		for (i = 0; i < (1 << info->vol_nbits); i++) {
 			if (!info->vol_table[i])
 				break;
 			if ((min_uV <= info->vol_table[i])
 				&& (max_uV >= info->vol_table[i])) {
 				ret = i;
 				break;
 			}
 		}
 	}
 	if (ret < 0)
 		pr_err("invalid voltage range (%d %d) uV\n", min_uV, max_uV);
 	return ret;
 }

 static int pm8607_set_voltage(struct regulator_dev *rdev,
 			      int min_uV, int max_uV)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 	uint8_t val, mask;
 	int ret;

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

 	ret = choose_voltage(rdev, min_uV, max_uV);
 	if (ret < 0)
 		return -EINVAL;
 	val = (uint8_t)(ret << info->vol_shift);
 	mask = ((1 << info->vol_nbits) - 1)  << info->vol_shift;

 	ret = pm860x_set_bits(info->i2c, info->vol_reg, mask, val);
 	if (ret)
 		return ret;
 	switch (info->desc.id) {
 	case PM8607_ID_BUCK1:
 	case PM8607_ID_BUCK3:
 		ret = pm860x_set_bits(info->i2c, info->update_reg,
 				      1 << info->update_bit,
 				      1 << info->update_bit);
 		break;
 	}
 	return ret;
 }

 static int pm8607_get_voltage(struct regulator_dev *rdev)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 	uint8_t val, mask;
 	int ret;

 	ret = pm860x_reg_read(info->i2c, info->vol_reg);
 	if (ret < 0)
 		return ret;

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

 	return pm8607_list_voltage(rdev, val);
 }

 static int pm8607_enable(struct regulator_dev *rdev)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);

 	return pm860x_set_bits(info->i2c, info->enable_reg,
 			       1 << info->enable_bit,
 			       1 << info->enable_bit);
 }

 static int pm8607_disable(struct regulator_dev *rdev)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);

 	return pm860x_set_bits(info->i2c, info->enable_reg,
 			       1 << info->enable_bit, 0);
 }

 static int pm8607_is_enabled(struct regulator_dev *rdev)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 	int ret;

 	ret = pm860x_reg_read(info->i2c, info->enable_reg);
 	if (ret < 0)
 		return ret;

 	return !!((unsigned char)ret & (1 << info->enable_bit));
 }

 static struct regulator_ops pm8607_regulator_ops = {
 	.set_voltage	= pm8607_set_voltage,
 	.get_voltage	= pm8607_get_voltage,
 	.enable		= pm8607_enable,
 	.disable	= pm8607_disable,
 	.is_enabled	= pm8607_is_enabled,
 };

 #define PM8607_DVC(vreg, nbits, ureg, ubit, ereg, ebit)			\
 {									\
 	.desc	= {							\
 		.name	= #vreg,					\
 		.ops	= &pm8607_regulator_ops,			\
 		.type	= REGULATOR_VOLTAGE,				\
 		.id	= PM8607_ID_##vreg,				\
 		.owner	= THIS_MODULE,					\
 	},								\
 	.vol_reg	= PM8607_##vreg,				\
 	.vol_shift	= (0),						\
 	.vol_nbits	= (nbits),					\
 	.update_reg	= PM8607_##ureg,				\
 	.update_bit	= (ubit),					\
 	.enable_reg	= PM8607_##ereg,				\
 	.enable_bit	= (ebit),					\
 	.slope_double	= (0),						\
 	.vol_table	= (unsigned int *)&vreg##_table,		\
 	.vol_suspend	= (unsigned int *)&vreg##_suspend_table,	\
 }

 #define PM8607_LDO(_id, vreg, shift, nbits, ereg, ebit)			\
 {									\
 	.desc	= {							\
 		.name	= "LDO" #_id,					\
 		.ops	= &pm8607_regulator_ops,			\
 		.type	= REGULATOR_VOLTAGE,				\
 		.id	= PM8607_ID_LDO##_id,				\
 		.owner	= THIS_MODULE,					\
 	},								\
 	.vol_reg	= PM8607_##vreg,				\
 	.vol_shift	= (shift),					\
 	.vol_nbits	= (nbits),					\
 	.enable_reg	= PM8607_##ereg,				\
 	.enable_bit	= (ebit),					\
 	.slope_double	= (0),						\
 	.vol_table	= (unsigned int *)&LDO##_id##_table,		\
 	.vol_suspend	= (unsigned int *)&LDO##_id##_suspend_table,	\
 }

 static struct pm8607_regulator_info pm8607_regulator_info[] = {
 	PM8607_DVC(BUCK1, 6, GO, 0, SUPPLIES_EN11, 0),
 	PM8607_DVC(BUCK2, 6, GO, 1, SUPPLIES_EN11, 1),
 	PM8607_DVC(BUCK3, 6, GO, 2, SUPPLIES_EN11, 2),

 	PM8607_LDO( 1,         LDO1, 0, 2, SUPPLIES_EN11, 3),
 	PM8607_LDO( 2,         LDO2, 0, 3, SUPPLIES_EN11, 4),
 	PM8607_LDO( 3,         LDO3, 0, 3, SUPPLIES_EN11, 5),
 	PM8607_LDO( 4,         LDO4, 0, 3, SUPPLIES_EN11, 6),
 	PM8607_LDO( 5,         LDO5, 0, 2, SUPPLIES_EN11, 7),
 	PM8607_LDO( 6,         LDO6, 0, 3, SUPPLIES_EN12, 0),
 	PM8607_LDO( 7,         LDO7, 0, 3, SUPPLIES_EN12, 1),
 	PM8607_LDO( 8,         LDO8, 0, 3, SUPPLIES_EN12, 2),
 	PM8607_LDO( 9,         LDO9, 0, 3, SUPPLIES_EN12, 3),
 	PM8607_LDO(10,        LDO10, 0, 3, SUPPLIES_EN12, 4),
 	PM8607_LDO(12,        LDO12, 0, 4, SUPPLIES_EN12, 5),
 	PM8607_LDO(13, VIBRATOR_SET, 1, 3,  VIBRATOR_SET, 0),
 	PM8607_LDO(14,        LDO14, 0, 4, SUPPLIES_EN12, 6),
 };

 static inline struct pm8607_regulator_info *find_regulator_info(int id)
 {
 	struct pm8607_regulator_info *info;
 	int i;

 	for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
 		info = &pm8607_regulator_info[i];
 		if (info->desc.id == id)
 			return info;
 	}
 	return NULL;
 }

 static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
 {
 	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
 	struct pm860x_platform_data *pdata = chip->dev->platform_data;
 	struct pm8607_regulator_info *info = NULL;

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

 	info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 	info->chip = chip;

 	info->regulator = regulator_register(&info->desc, &pdev->dev,
 					     pdata->regulator[pdev->id], info);
 	if (IS_ERR(info->regulator)) {
 		dev_err(&pdev->dev, "failed to register regulator %s\n",
 			info->desc.name);
 		return PTR_ERR(info->regulator);
 	}

 	/* check DVC ramp slope double */
 	if (info->desc.id == PM8607_ID_BUCK3)
 		if (info->chip->buck3_double)
 			info->slope_double = 1;

 	platform_set_drvdata(pdev, info);
 	return 0;
 }

 static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
 {
 	struct pm8607_regulator_info *info = platform_get_drvdata(pdev);

 	platform_set_drvdata(pdev, NULL);
 	regulator_unregister(info->regulator);
 	return 0;
 }

 static struct platform_driver pm8607_regulator_driver = {
 	.driver		= {
 		.name	= "88pm860x-regulator",
 		.owner	= THIS_MODULE,
 	},
 	.probe		= pm8607_regulator_probe,
 	.remove		= __devexit_p(pm8607_regulator_remove),
 };

 static int __init pm8607_regulator_init(void)
 {
 	return platform_driver_register(&pm8607_regulator_driver);
 }
 subsys_initcall(pm8607_regulator_init);

 static void __exit pm8607_regulator_exit(void)
 {
 	platform_driver_unregister(&pm8607_regulator_driver);
 }
 module_exit(pm8607_regulator_exit);

 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
 MODULE_ALIAS("platform:88pm8607-regulator");
	/*
	* Regulators driver for Marvell 88PM8607
	*
	* Copyright (C) 2009 Marvell International Ltd.
	* Haojian Zhuang <haojian.zhuang@marvell.com>
	*
	* 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/i2c.h>
	#include <linux/platform_device.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/mfd/88pm860x.h>

	struct pm8607_regulator_info {
	struct regulator_desc desc;
	struct pm860x_chip *chip;
	struct regulator_dev *regulator;
	struct i2c_client *i2c;

	unsigned int *vol_table;
	unsigned int *vol_suspend;

	int vol_reg;
	int vol_shift;
	int vol_nbits;
	int update_reg;
	int update_bit;
	int enable_reg;
	int enable_bit;
	int slope_double;
	};

	static const unsigned int BUCK1_table[] = {
	725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
	925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
	1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
	1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
	0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
	200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
	400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
	600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
	};

	static const unsigned int BUCK1_suspend_table[] = {
	0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
	200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
	400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
	600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
	800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
	};

	static const unsigned int BUCK2_table[] = {
	0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
	400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
	800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
	};

	static const unsigned int BUCK2_suspend_table[] = {
	0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
	400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
	800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
	1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
	1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
	2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
	2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
	2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
	};

	static const unsigned int BUCK3_table[] = {
	0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
	200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
	400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
	600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
	800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
	};

	static const unsigned int BUCK3_suspend_table[] = {
	0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
	200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
	400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
	600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
	800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
	1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
	1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
	1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
	};

	static const unsigned int LDO1_table[] = {
	1800000, 1200000, 2800000, 0,
	};

	static const unsigned int LDO1_suspend_table[] = {
	1800000, 1200000, 0, 0,
	};

	static const unsigned int LDO2_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
	};

	static const unsigned int LDO2_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO3_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
	};

	static const unsigned int LDO3_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO4_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
	};

	static const unsigned int LDO4_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
	};

	static const unsigned int LDO5_table[] = {
	2900000, 3000000, 3100000, 3300000,
	};

	static const unsigned int LDO5_suspend_table[] = {
	2900000, 0, 0, 0,
	};

	static const unsigned int LDO6_table[] = {
	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
	};

	static const unsigned int LDO6_suspend_table[] = {
	1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
	};

	static const unsigned int LDO7_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO7_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO8_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO8_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO9_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
	};

	static const unsigned int LDO9_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	};

	static const unsigned int LDO10_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
	};

	static const unsigned int LDO10_suspend_table[] = {
	1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
	};

	static const unsigned int LDO12_table[] = {
	1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
	};

	static const unsigned int LDO12_suspend_table[] = {
	1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
	1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
	};

	static const unsigned int LDO13_table[] = {
	1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 0,
	};

	static const unsigned int LDO13_suspend_table[] = {
	0,
	};

	static const unsigned int LDO14_table[] = {
	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
	};

	static const unsigned int LDO14_suspend_table[] = {
	1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
	};

	static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
	int ret = -EINVAL;

	if (info->vol_table && (index < (1 << info->vol_nbits))) {
	ret = info->vol_table[index];
	if (info->slope_double)
	ret <<= 1;
	}
	return ret;
	}

	static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
	int i, ret = -ENOENT;

	if (info->slope_double) {
	min_uV = min_uV >> 1;
	max_uV = max_uV >> 1;
	}
	if (info->vol_table) {
	for (i = 0; i < (1 << info->vol_nbits); i++) {
	if (!info->vol_table[i])
	break;
	if ((min_uV <= info->vol_table[i])
	&& (max_uV >= info->vol_table[i])) {
	ret = i;
	break;
	}
	}
	}
	if (ret < 0)
	pr_err("invalid voltage range (%d %d) uV\n", min_uV, max_uV);
	return ret;
	}

	static int pm8607_set_voltage(struct regulator_dev *rdev,
	int min_uV, int max_uV)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
	uint8_t val, mask;
	int ret;

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

	ret = choose_voltage(rdev, min_uV, max_uV);
	if (ret < 0)
	return -EINVAL;
	val = (uint8_t)(ret << info->vol_shift);
	mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;

	ret = pm860x_set_bits(info->i2c, info->vol_reg, mask, val);
	if (ret)
	return ret;
	switch (info->desc.id) {
	case PM8607_ID_BUCK1:
	case PM8607_ID_BUCK3:
	ret = pm860x_set_bits(info->i2c, info->update_reg,
	1 << info->update_bit,
	1 << info->update_bit);
	break;
	}
	return ret;
	}

	static int pm8607_get_voltage(struct regulator_dev *rdev)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
	uint8_t val, mask;
	int ret;

	ret = pm860x_reg_read(info->i2c, info->vol_reg);
	if (ret < 0)
	return ret;

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

	return pm8607_list_voltage(rdev, val);
	}

	static int pm8607_enable(struct regulator_dev *rdev)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);

	return pm860x_set_bits(info->i2c, info->enable_reg,
	1 << info->enable_bit,
	1 << info->enable_bit);
	}

	static int pm8607_disable(struct regulator_dev *rdev)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);

	return pm860x_set_bits(info->i2c, info->enable_reg,
	1 << info->enable_bit, 0);
	}

	static int pm8607_is_enabled(struct regulator_dev *rdev)
	{
	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
	int ret;

	ret = pm860x_reg_read(info->i2c, info->enable_reg);
	if (ret < 0)
	return ret;

	return !!((unsigned char)ret & (1 << info->enable_bit));
	}

	static struct regulator_ops pm8607_regulator_ops = {
	.set_voltage = pm8607_set_voltage,
	.get_voltage = pm8607_get_voltage,
	.enable = pm8607_enable,
	.disable = pm8607_disable,
	.is_enabled = pm8607_is_enabled,
	};

	#define PM8607_DVC(vreg, nbits, ureg, ubit, ereg, ebit) \
	{ \
	.desc = { \
	.name = #vreg, \
	.ops = &pm8607_regulator_ops, \
	.type = REGULATOR_VOLTAGE, \
	.id = PM8607_ID_##vreg, \
	.owner = THIS_MODULE, \
	}, \
	.vol_reg = PM8607_##vreg, \
	.vol_shift = (0), \
	.vol_nbits = (nbits), \
	.update_reg = PM8607_##ureg, \
	.update_bit = (ubit), \
	.enable_reg = PM8607_##ereg, \
	.enable_bit = (ebit), \
	.slope_double = (0), \
	.vol_table = (unsigned int *)&vreg##_table, \
	.vol_suspend = (unsigned int *)&vreg##_suspend_table, \
	}

	#define PM8607_LDO(_id, vreg, shift, nbits, ereg, ebit) \
	{ \
	.desc = { \
	.name = "LDO" #_id, \
	.ops = &pm8607_regulator_ops, \
	.type = REGULATOR_VOLTAGE, \
	.id = PM8607_ID_LDO##_id, \
	.owner = THIS_MODULE, \
	}, \
	.vol_reg = PM8607_##vreg, \
	.vol_shift = (shift), \
	.vol_nbits = (nbits), \
	.enable_reg = PM8607_##ereg, \
	.enable_bit = (ebit), \
	.slope_double = (0), \
	.vol_table = (unsigned int *)&LDO##_id##_table, \
	.vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
	}

	static struct pm8607_regulator_info pm8607_regulator_info[] = {
	PM8607_DVC(BUCK1, 6, GO, 0, SUPPLIES_EN11, 0),
	PM8607_DVC(BUCK2, 6, GO, 1, SUPPLIES_EN11, 1),
	PM8607_DVC(BUCK3, 6, GO, 2, SUPPLIES_EN11, 2),

	PM8607_LDO( 1, LDO1, 0, 2, SUPPLIES_EN11, 3),
	PM8607_LDO( 2, LDO2, 0, 3, SUPPLIES_EN11, 4),
	PM8607_LDO( 3, LDO3, 0, 3, SUPPLIES_EN11, 5),
	PM8607_LDO( 4, LDO4, 0, 3, SUPPLIES_EN11, 6),
	PM8607_LDO( 5, LDO5, 0, 2, SUPPLIES_EN11, 7),
	PM8607_LDO( 6, LDO6, 0, 3, SUPPLIES_EN12, 0),
	PM8607_LDO( 7, LDO7, 0, 3, SUPPLIES_EN12, 1),
	PM8607_LDO( 8, LDO8, 0, 3, SUPPLIES_EN12, 2),
	PM8607_LDO( 9, LDO9, 0, 3, SUPPLIES_EN12, 3),
	PM8607_LDO(10, LDO10, 0, 3, SUPPLIES_EN12, 4),
	PM8607_LDO(12, LDO12, 0, 4, SUPPLIES_EN12, 5),
	PM8607_LDO(13, VIBRATOR_SET, 1, 3, VIBRATOR_SET, 0),
	PM8607_LDO(14, LDO14, 0, 4, SUPPLIES_EN12, 6),
	};

	static inline struct pm8607_regulator_info *find_regulator_info(int id)
	{
	struct pm8607_regulator_info *info;
	int i;

	for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
	info = &pm8607_regulator_info[i];
	if (info->desc.id == id)
	return info;
	}
	return NULL;
	}

	static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
	{
	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
	struct pm860x_platform_data *pdata = chip->dev->platform_data;
	struct pm8607_regulator_info *info = NULL;

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

	info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
	info->chip = chip;

	info->regulator = regulator_register(&info->desc, &pdev->dev,
	pdata->regulator[pdev->id], info);
	if (IS_ERR(info->regulator)) {
	dev_err(&pdev->dev, "failed to register regulator %s\n",
	info->desc.name);
	return PTR_ERR(info->regulator);
	}

	/* check DVC ramp slope double */
	if (info->desc.id == PM8607_ID_BUCK3)
	if (info->chip->buck3_double)
	info->slope_double = 1;

	platform_set_drvdata(pdev, info);
	return 0;
	}

	static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
	{
	struct pm8607_regulator_info *info = platform_get_drvdata(pdev);

	platform_set_drvdata(pdev, NULL);
	regulator_unregister(info->regulator);
	return 0;
	}

	static struct platform_driver pm8607_regulator_driver = {
	.driver = {
	.name = "88pm860x-regulator",
	.owner = THIS_MODULE,
	},
	.probe = pm8607_regulator_probe,
	.remove = __devexit_p(pm8607_regulator_remove),
	};

	static int __init pm8607_regulator_init(void)
	{
	return platform_driver_register(&pm8607_regulator_driver);
	}
	subsys_initcall(pm8607_regulator_init);

	static void __exit pm8607_regulator_exit(void)
	{
	platform_driver_unregister(&pm8607_regulator_driver);
	}
	module_exit(pm8607_regulator_exit);

	MODULE_LICENSE("GPL");
	MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
	MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
	MODULE_ALIAS("platform:88pm8607-regulator");