// SPDX-License-Identifier: GPL-2.0-or-later

  /*

   * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
   *
   * http://www.active-semi.com/products/power-management-units/act88xx/

   *
   * Copyright (C) 2013 Atmel Corporation

   */
  
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/i2c.h>
  #include <linux/err.h>
  #include <linux/platform_device.h>
  #include <linux/regulator/driver.h>
  #include <linux/regulator/act8865.h>
  #include <linux/of.h>
  #include <linux/of_device.h>

  #include <linux/power_supply.h>

  #include <linux/regulator/of_regulator.h>
  #include <linux/regmap.h>

  #include <dt-bindings/regulator/active-semi,8865-regulator.h>

  
  /*

   * ACT8600 Global Register Map.
   */
  #define ACT8600_SYS_MODE	0x00
  #define ACT8600_SYS_CTRL	0x01
  #define ACT8600_DCDC1_VSET	0x10
  #define ACT8600_DCDC1_CTRL	0x12
  #define ACT8600_DCDC2_VSET	0x20
  #define ACT8600_DCDC2_CTRL	0x22
  #define ACT8600_DCDC3_VSET	0x30
  #define ACT8600_DCDC3_CTRL	0x32
  #define ACT8600_SUDCDC4_VSET	0x40
  #define ACT8600_SUDCDC4_CTRL	0x41
  #define ACT8600_LDO5_VSET	0x50
  #define ACT8600_LDO5_CTRL	0x51
  #define ACT8600_LDO6_VSET	0x60
  #define ACT8600_LDO6_CTRL	0x61
  #define ACT8600_LDO7_VSET	0x70
  #define ACT8600_LDO7_CTRL	0x71
  #define ACT8600_LDO8_VSET	0x80
  #define ACT8600_LDO8_CTRL	0x81
  #define ACT8600_LDO910_CTRL	0x91
  #define ACT8600_APCH0		0xA1
  #define ACT8600_APCH1		0xA8
  #define ACT8600_APCH2		0xA9
  #define ACT8600_APCH_STAT	0xAA
  #define ACT8600_OTG0		0xB0
  #define ACT8600_OTG1		0xB2
  
  /*

   * ACT8846 Global Register Map.
   */
  #define	ACT8846_SYS0		0x00
  #define	ACT8846_SYS1		0x01
  #define	ACT8846_REG1_VSET	0x10
  #define	ACT8846_REG1_CTRL	0x12
  #define	ACT8846_REG2_VSET0	0x20
  #define	ACT8846_REG2_VSET1	0x21
  #define	ACT8846_REG2_CTRL	0x22
  #define	ACT8846_REG3_VSET0	0x30
  #define	ACT8846_REG3_VSET1	0x31
  #define	ACT8846_REG3_CTRL	0x32
  #define	ACT8846_REG4_VSET0	0x40
  #define	ACT8846_REG4_VSET1	0x41
  #define	ACT8846_REG4_CTRL	0x42
  #define	ACT8846_REG5_VSET	0x50
  #define	ACT8846_REG5_CTRL	0x51
  #define	ACT8846_REG6_VSET	0x58
  #define	ACT8846_REG6_CTRL	0x59
  #define	ACT8846_REG7_VSET	0x60
  #define	ACT8846_REG7_CTRL	0x61
  #define	ACT8846_REG8_VSET	0x68
  #define	ACT8846_REG8_CTRL	0x69
  #define	ACT8846_REG9_VSET	0x70
  #define	ACT8846_REG9_CTRL	0x71
  #define	ACT8846_REG10_VSET	0x80
  #define	ACT8846_REG10_CTRL	0x81
  #define	ACT8846_REG11_VSET	0x90
  #define	ACT8846_REG11_CTRL	0x91
  #define	ACT8846_REG12_VSET	0xa0
  #define	ACT8846_REG12_CTRL	0xa1
  #define	ACT8846_REG13_CTRL	0xb1

  #define	ACT8846_GLB_OFF_CTRL	0xc3
  #define	ACT8846_OFF_SYSMASK	0x18

  
  /*

   * ACT8865 Global Register Map.
   */
  #define	ACT8865_SYS_MODE	0x00
  #define	ACT8865_SYS_CTRL	0x01

  #define	ACT8865_SYS_UNLK_REGS	0x0b

  #define	ACT8865_DCDC1_VSET1	0x20
  #define	ACT8865_DCDC1_VSET2	0x21
  #define	ACT8865_DCDC1_CTRL	0x22

  #define	ACT8865_DCDC1_SUS	0x24

  #define	ACT8865_DCDC2_VSET1	0x30
  #define	ACT8865_DCDC2_VSET2	0x31
  #define	ACT8865_DCDC2_CTRL	0x32

  #define	ACT8865_DCDC2_SUS	0x34

  #define	ACT8865_DCDC3_VSET1	0x40
  #define	ACT8865_DCDC3_VSET2	0x41
  #define	ACT8865_DCDC3_CTRL	0x42

  #define	ACT8865_DCDC3_SUS	0x44

  #define	ACT8865_LDO1_VSET	0x50
  #define	ACT8865_LDO1_CTRL	0x51

  #define	ACT8865_LDO1_SUS	0x52

  #define	ACT8865_LDO2_VSET	0x54
  #define	ACT8865_LDO2_CTRL	0x55

  #define	ACT8865_LDO2_SUS	0x56

  #define	ACT8865_LDO3_VSET	0x60
  #define	ACT8865_LDO3_CTRL	0x61

  #define	ACT8865_LDO3_SUS	0x62

  #define	ACT8865_LDO4_VSET	0x64
  #define	ACT8865_LDO4_CTRL	0x65

  #define	ACT8865_LDO4_SUS	0x66

  #define	ACT8865_MSTROFF		0x20

  
  /*
   * Field Definitions.
   */
  #define	ACT8865_ENA		0x80	/* ON - [7] */

  #define	ACT8865_DIS		0x40	/* DIS - [6] */

  #define	ACT8865_VSEL_MASK	0x3F	/* VSET - [5:0] */

  
  #define ACT8600_LDO10_ENA		0x40	/* ON - [6] */
  #define ACT8600_SUDCDC_VSEL_MASK	0xFF	/* SUDCDC VSET - [7:0] */

  #define ACT8600_APCH_CHG_ACIN		BIT(7)
  #define ACT8600_APCH_CHG_USB		BIT(6)
  #define ACT8600_APCH_CSTATE0		BIT(5)
  #define ACT8600_APCH_CSTATE1		BIT(4)

  /*
   * ACT8865 voltage number
   */
  #define	ACT8865_VOLTAGE_NUM	64

  #define ACT8600_SUDCDC_VOLTAGE_NUM	256

  
  struct act8865 {

  	struct regmap *regmap;

  	int off_reg;
  	int off_mask;

  };

  static const struct regmap_range act8600_reg_ranges[] = {
  	regmap_reg_range(0x00, 0x01),
  	regmap_reg_range(0x10, 0x10),
  	regmap_reg_range(0x12, 0x12),
  	regmap_reg_range(0x20, 0x20),
  	regmap_reg_range(0x22, 0x22),
  	regmap_reg_range(0x30, 0x30),
  	regmap_reg_range(0x32, 0x32),
  	regmap_reg_range(0x40, 0x41),
  	regmap_reg_range(0x50, 0x51),
  	regmap_reg_range(0x60, 0x61),
  	regmap_reg_range(0x70, 0x71),
  	regmap_reg_range(0x80, 0x81),
  	regmap_reg_range(0x91, 0x91),
  	regmap_reg_range(0xA1, 0xA1),
  	regmap_reg_range(0xA8, 0xAA),
  	regmap_reg_range(0xB0, 0xB0),
  	regmap_reg_range(0xB2, 0xB2),
  	regmap_reg_range(0xC1, 0xC1),
  };
  
  static const struct regmap_range act8600_reg_ro_ranges[] = {
  	regmap_reg_range(0xAA, 0xAA),
  	regmap_reg_range(0xC1, 0xC1),
  };
  
  static const struct regmap_range act8600_reg_volatile_ranges[] = {
  	regmap_reg_range(0x00, 0x01),
  	regmap_reg_range(0x12, 0x12),
  	regmap_reg_range(0x22, 0x22),
  	regmap_reg_range(0x32, 0x32),
  	regmap_reg_range(0x41, 0x41),
  	regmap_reg_range(0x51, 0x51),
  	regmap_reg_range(0x61, 0x61),
  	regmap_reg_range(0x71, 0x71),
  	regmap_reg_range(0x81, 0x81),
  	regmap_reg_range(0xA8, 0xA8),
  	regmap_reg_range(0xAA, 0xAA),
  	regmap_reg_range(0xB0, 0xB0),
  	regmap_reg_range(0xC1, 0xC1),
  };
  
  static const struct regmap_access_table act8600_write_ranges_table = {
  	.yes_ranges	= act8600_reg_ranges,
  	.n_yes_ranges	= ARRAY_SIZE(act8600_reg_ranges),
  	.no_ranges	= act8600_reg_ro_ranges,
  	.n_no_ranges	= ARRAY_SIZE(act8600_reg_ro_ranges),
  };
  
  static const struct regmap_access_table act8600_read_ranges_table = {
  	.yes_ranges	= act8600_reg_ranges,
  	.n_yes_ranges	= ARRAY_SIZE(act8600_reg_ranges),
  };
  
  static const struct regmap_access_table act8600_volatile_ranges_table = {
  	.yes_ranges	= act8600_reg_volatile_ranges,
  	.n_yes_ranges	= ARRAY_SIZE(act8600_reg_volatile_ranges),
  };
  
  static const struct regmap_config act8600_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  	.max_register = 0xFF,
  	.wr_table = &act8600_write_ranges_table,
  	.rd_table = &act8600_read_ranges_table,
  	.volatile_table = &act8600_volatile_ranges_table,
  };

  static const struct regmap_config act8865_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  };

  static const struct linear_range act8865_voltage_ranges[] = {

  	REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
  	REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
  	REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
  };

  static const struct linear_range act8600_sudcdc_voltage_ranges[] = {

  	REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
  	REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
  	REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),

  	REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000),
  	REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),

  };

  static int act8865_set_suspend_state(struct regulator_dev *rdev, bool enable)
  {
  	struct regmap *regmap = rdev->regmap;
  	int id = rdev->desc->id, reg, val;
  
  	switch (id) {
  	case ACT8865_ID_DCDC1:
  		reg = ACT8865_DCDC1_SUS;
  		val = 0xa8;
  		break;
  	case ACT8865_ID_DCDC2:
  		reg = ACT8865_DCDC2_SUS;
  		val = 0xa8;
  		break;
  	case ACT8865_ID_DCDC3:
  		reg = ACT8865_DCDC3_SUS;
  		val = 0xa8;
  		break;
  	case ACT8865_ID_LDO1:
  		reg = ACT8865_LDO1_SUS;
  		val = 0xe8;
  		break;
  	case ACT8865_ID_LDO2:
  		reg = ACT8865_LDO2_SUS;
  		val = 0xe8;
  		break;
  	case ACT8865_ID_LDO3:
  		reg = ACT8865_LDO3_SUS;
  		val = 0xe8;
  		break;
  	case ACT8865_ID_LDO4:
  		reg = ACT8865_LDO4_SUS;
  		val = 0xe8;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	if (enable)
  		val |= BIT(4);
  
  	/*
  	 * Ask the PMIC to enable/disable this output when entering hibernate
  	 * mode.
  	 */
  	return regmap_write(regmap, reg, val);
  }
  
  static int act8865_set_suspend_enable(struct regulator_dev *rdev)
  {
  	return act8865_set_suspend_state(rdev, true);
  }
  
  static int act8865_set_suspend_disable(struct regulator_dev *rdev)
  {
  	return act8865_set_suspend_state(rdev, false);
  }
  
  static unsigned int act8865_of_map_mode(unsigned int mode)
  {
  	switch (mode) {
  	case ACT8865_REGULATOR_MODE_FIXED:
  		return REGULATOR_MODE_FAST;
  	case ACT8865_REGULATOR_MODE_NORMAL:
  		return REGULATOR_MODE_NORMAL;
  	case ACT8865_REGULATOR_MODE_LOWPOWER:
  		return REGULATOR_MODE_STANDBY;
  	default:
  		return REGULATOR_MODE_INVALID;
  	}
  }
  
  static int act8865_set_mode(struct regulator_dev *rdev, unsigned int mode)
  {
  	struct regmap *regmap = rdev->regmap;
  	int id = rdev_get_id(rdev);
  	int reg, val = 0;
  
  	switch (id) {
  	case ACT8865_ID_DCDC1:
  		reg = ACT8865_DCDC1_CTRL;
  		break;
  	case ACT8865_ID_DCDC2:
  		reg = ACT8865_DCDC2_CTRL;
  		break;
  	case ACT8865_ID_DCDC3:
  		reg = ACT8865_DCDC3_CTRL;
  		break;
  	case ACT8865_ID_LDO1:
  		reg = ACT8865_LDO1_CTRL;
  		break;
  	case ACT8865_ID_LDO2:
  		reg = ACT8865_LDO2_CTRL;
  		break;
  	case ACT8865_ID_LDO3:
  		reg = ACT8865_LDO3_CTRL;
  		break;
  	case ACT8865_ID_LDO4:
  		reg = ACT8865_LDO4_CTRL;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	switch (mode) {
  	case REGULATOR_MODE_FAST:
  	case REGULATOR_MODE_NORMAL:
  		if (id <= ACT8865_ID_DCDC3)
  			val = BIT(5);
  		break;
  	case REGULATOR_MODE_STANDBY:
  		if (id > ACT8865_ID_DCDC3)
  			val = BIT(5);
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return regmap_update_bits(regmap, reg, BIT(5), val);
  }
  
  static unsigned int act8865_get_mode(struct regulator_dev *rdev)
  {
  	struct regmap *regmap = rdev->regmap;
  	int id = rdev_get_id(rdev);
  	int reg, ret, val = 0;
  
  	switch (id) {
  	case ACT8865_ID_DCDC1:
  		reg = ACT8865_DCDC1_CTRL;
  		break;
  	case ACT8865_ID_DCDC2:
  		reg = ACT8865_DCDC2_CTRL;
  		break;
  	case ACT8865_ID_DCDC3:
  		reg = ACT8865_DCDC3_CTRL;
  		break;
  	case ACT8865_ID_LDO1:
  		reg = ACT8865_LDO1_CTRL;
  		break;
  	case ACT8865_ID_LDO2:
  		reg = ACT8865_LDO2_CTRL;
  		break;
  	case ACT8865_ID_LDO3:
  		reg = ACT8865_LDO3_CTRL;
  		break;
  	case ACT8865_ID_LDO4:
  		reg = ACT8865_LDO4_CTRL;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	ret = regmap_read(regmap, reg, &val);
  	if (ret)
  		return ret;
  
  	if (id <= ACT8865_ID_DCDC3 && (val & BIT(5)))
  		return REGULATOR_MODE_FAST;
  	else if	(id > ACT8865_ID_DCDC3 && !(val & BIT(5)))
  		return REGULATOR_MODE_NORMAL;
  	else
  		return REGULATOR_MODE_STANDBY;
  }

  static const struct regulator_ops act8865_ops = {

  	.list_voltage		= regulator_list_voltage_linear_range,
  	.map_voltage		= regulator_map_voltage_linear_range,
  	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
  	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,

  	.set_mode		= act8865_set_mode,
  	.get_mode		= act8865_get_mode,

  	.is_enabled		= regulator_is_enabled_regmap,

  	.set_suspend_enable	= act8865_set_suspend_enable,
  	.set_suspend_disable	= act8865_set_suspend_disable,

  };

  static const struct regulator_ops act8865_ldo_ops = {
  	.list_voltage		= regulator_list_voltage_linear_range,
  	.map_voltage		= regulator_map_voltage_linear_range,
  	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
  	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,

  	.set_mode		= act8865_set_mode,
  	.get_mode		= act8865_get_mode,

  	.is_enabled		= regulator_is_enabled_regmap,

  	.set_suspend_enable	= act8865_set_suspend_enable,
  	.set_suspend_disable	= act8865_set_suspend_disable,

  	.set_pull_down		= regulator_set_pull_down_regmap,
  };

  static const struct regulator_ops act8865_fixed_ldo_ops = {

  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,
  	.is_enabled		= regulator_is_enabled_regmap,
  };

  #define ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, _ops)	\

  	[_family##_ID_##_id] = {					\
  		.name			= _name,			\

  		.of_match		= of_match_ptr(_name),		\

  		.of_map_mode		= act8865_of_map_mode,		\

  		.regulators_node	= of_match_ptr("regulators"),	\

  		.supply_name		= _supply,			\

  		.id			= _family##_ID_##_id,		\
  		.type			= REGULATOR_VOLTAGE,		\

  		.ops			= _ops,				\

  		.n_voltages		= ACT8865_VOLTAGE_NUM,		\
  		.linear_ranges		= act8865_voltage_ranges,	\
  		.n_linear_ranges	= ARRAY_SIZE(act8865_voltage_ranges), \
  		.vsel_reg		= _family##_##_id##_##_vsel_reg, \
  		.vsel_mask		= ACT8865_VSEL_MASK,		\
  		.enable_reg		= _family##_##_id##_CTRL,	\
  		.enable_mask		= ACT8865_ENA,			\

  		.pull_down_reg		= _family##_##_id##_CTRL,	\
  		.pull_down_mask		= ACT8865_DIS,			\

  		.owner			= THIS_MODULE,			\
  	}

  #define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \
  	ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ops)
  
  #define ACT88xx_LDO(_name, _family, _id, _vsel_reg, _supply) \
  	ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ldo_ops)

  static const struct regulator_desc act8600_regulators[] = {

  	ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
  	ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
  	ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),

  	{
  		.name = "SUDCDC_REG4",

  		.of_match = of_match_ptr("SUDCDC_REG4"),
  		.regulators_node = of_match_ptr("regulators"),

  		.id = ACT8600_ID_SUDCDC4,
  		.ops = &act8865_ops,
  		.type = REGULATOR_VOLTAGE,
  		.n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
  		.linear_ranges = act8600_sudcdc_voltage_ranges,
  		.n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
  		.vsel_reg = ACT8600_SUDCDC4_VSET,
  		.vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
  		.enable_reg = ACT8600_SUDCDC4_CTRL,
  		.enable_mask = ACT8865_ENA,
  		.owner = THIS_MODULE,
  	},

  	ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
  	ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
  	ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
  	ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),

  	{
  		.name = "LDO_REG9",

  		.of_match = of_match_ptr("LDO_REG9"),
  		.regulators_node = of_match_ptr("regulators"),

  		.id = ACT8600_ID_LDO9,

  		.ops = &act8865_fixed_ldo_ops,

  		.type = REGULATOR_VOLTAGE,
  		.n_voltages = 1,

  		.fixed_uV = 3300000,

  		.enable_reg = ACT8600_LDO910_CTRL,
  		.enable_mask = ACT8865_ENA,
  		.owner = THIS_MODULE,
  	},
  	{
  		.name = "LDO_REG10",

  		.of_match = of_match_ptr("LDO_REG10"),
  		.regulators_node = of_match_ptr("regulators"),

  		.id = ACT8600_ID_LDO10,

  		.ops = &act8865_fixed_ldo_ops,

  		.type = REGULATOR_VOLTAGE,
  		.n_voltages = 1,
  		.fixed_uV = 1200000,
  		.enable_reg = ACT8600_LDO910_CTRL,
  		.enable_mask = ACT8600_LDO10_ENA,
  		.owner = THIS_MODULE,
  	},
  };

  static const struct regulator_desc act8846_regulators[] = {

  	ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
  	ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
  	ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
  	ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
  	ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
  	ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
  	ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
  	ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
  	ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
  	ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
  	ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
  	ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),

  };

  static const struct regulator_desc act8865_regulators[] = {

  	ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
  	ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
  	ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),

  	ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
  	ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
  	ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
  	ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),

  };

  static const struct regulator_desc act8865_alt_regulators[] = {
  	ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
  	ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
  	ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),

  	ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
  	ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
  	ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
  	ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),

  };

  #ifdef CONFIG_OF
  static const struct of_device_id act8865_dt_ids[] = {

  	{ .compatible = "active-semi,act8600", .data = (void *)ACT8600 },

  	{ .compatible = "active-semi,act8846", .data = (void *)ACT8846 },

  	{ .compatible = "active-semi,act8865", .data = (void *)ACT8865 },

  	{ }
  };
  MODULE_DEVICE_TABLE(of, act8865_dt_ids);

  #endif

  static struct act8865_regulator_data *act8865_get_regulator_data(
  		int id, struct act8865_platform_data *pdata)

  {
  	int i;

  	for (i = 0; i < pdata->num_regulators; i++) {
  		if (pdata->regulators[i].id == id)

  			return &pdata->regulators[i];

  	}
  
  	return NULL;
  }

  static struct i2c_client *act8865_i2c_client;
  static void act8865_power_off(void)
  {
  	struct act8865 *act8865;
  
  	act8865 = i2c_get_clientdata(act8865_i2c_client);
  	regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
  	while (1);
  }

  static int act8600_charger_get_status(struct regmap *map)
  {
  	unsigned int val;
  	int ret;
  	u8 state0, state1;
  
  	ret = regmap_read(map, ACT8600_APCH_STAT, &val);
  	if (ret < 0)
  		return ret;
  
  	state0 = val & ACT8600_APCH_CSTATE0;
  	state1 = val & ACT8600_APCH_CSTATE1;
  
  	if (state0 && !state1)
  		return POWER_SUPPLY_STATUS_CHARGING;
  	if (!state0 && state1)
  		return POWER_SUPPLY_STATUS_NOT_CHARGING;
  	if (!state0 && !state1)
  		return POWER_SUPPLY_STATUS_DISCHARGING;
  
  	return POWER_SUPPLY_STATUS_UNKNOWN;
  }
  
  static int act8600_charger_get_property(struct power_supply *psy,
  		enum power_supply_property psp, union power_supply_propval *val)
  {
  	struct regmap *map = power_supply_get_drvdata(psy);
  	int ret;
  
  	switch (psp) {
  	case POWER_SUPPLY_PROP_STATUS:
  		ret = act8600_charger_get_status(map);
  		if (ret < 0)
  			return ret;
  
  		val->intval = ret;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static enum power_supply_property act8600_charger_properties[] = {
  	POWER_SUPPLY_PROP_STATUS,
  };
  
  static const struct power_supply_desc act8600_charger_desc = {
  	.name = "act8600-charger",
  	.type = POWER_SUPPLY_TYPE_BATTERY,
  	.properties = act8600_charger_properties,
  	.num_properties = ARRAY_SIZE(act8600_charger_properties),
  	.get_property = act8600_charger_get_property,
  };
  
  static int act8600_charger_probe(struct device *dev, struct regmap *regmap)
  {
  	struct power_supply *charger;
  	struct power_supply_config cfg = {
  		.drv_data = regmap,
  		.of_node = dev->of_node,
  	};
  
  	charger = devm_power_supply_register(dev, &act8600_charger_desc, &cfg);

  	return PTR_ERR_OR_ZERO(charger);

  }

  static int act8865_pmic_probe(struct i2c_client *client,

  			      const struct i2c_device_id *i2c_id)

  {

  	const struct regulator_desc *regulators;

  	struct act8865_platform_data *pdata = NULL;

  	struct device *dev = &client->dev;

  	int i, ret, num_regulators;

  	struct act8865 *act8865;

  	const struct regmap_config *regmap_config;

  	unsigned long type;

  	int off_reg, off_mask;

  	int voltage_select = 0;

  	if (dev->of_node) {

  		const struct of_device_id *id;

  
  		id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
  		if (!id)
  			return -ENODEV;

  		type = (unsigned long) id->data;

  
  		voltage_select = !!of_get_property(dev->of_node,
  						   "active-semi,vsel-high",
  						   NULL);

  	} else {
  		type = i2c_id->driver_data;

  		pdata = dev_get_platdata(dev);

  	}
  
  	switch (type) {

  	case ACT8600:
  		regulators = act8600_regulators;
  		num_regulators = ARRAY_SIZE(act8600_regulators);

  		regmap_config = &act8600_regmap_config;

  		off_reg = -1;
  		off_mask = -1;
  		break;

  	case ACT8846:

  		regulators = act8846_regulators;
  		num_regulators = ARRAY_SIZE(act8846_regulators);

  		regmap_config = &act8865_regmap_config;

  		off_reg = ACT8846_GLB_OFF_CTRL;
  		off_mask = ACT8846_OFF_SYSMASK;

  		break;

  	case ACT8865:

  		if (voltage_select) {
  			regulators = act8865_alt_regulators;
  			num_regulators = ARRAY_SIZE(act8865_alt_regulators);
  		} else {
  			regulators = act8865_regulators;
  			num_regulators = ARRAY_SIZE(act8865_regulators);
  		}

  		regmap_config = &act8865_regmap_config;

  		off_reg = ACT8865_SYS_CTRL;
  		off_mask = ACT8865_MSTROFF;

  		break;
  	default:
  		dev_err(dev, "invalid device id %lu
  ", type);
  		return -EINVAL;
  	}

  	act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);

  	if (!act8865)
  		return -ENOMEM;

  	act8865->regmap = devm_regmap_init_i2c(client, regmap_config);

  	if (IS_ERR(act8865->regmap)) {

  		ret = PTR_ERR(act8865->regmap);

  		dev_err(dev, "Failed to allocate register map: %d
  ", ret);

  		return ret;

  	}

  	if (of_device_is_system_power_controller(dev->of_node)) {

  		if (!pm_power_off && (off_reg > 0)) {

  			act8865_i2c_client = client;
  			act8865->off_reg = off_reg;
  			act8865->off_mask = off_mask;
  			pm_power_off = act8865_power_off;
  		} else {
  			dev_err(dev, "Failed to set poweroff capability, already defined
  ");
  		}
  	}

  	/* Finally register devices */

  	for (i = 0; i < num_regulators; i++) {
  		const struct regulator_desc *desc = &regulators[i];
  		struct regulator_config config = { };
  		struct regulator_dev *rdev;

  
  		config.dev = dev;

  		config.driver_data = act8865;
  		config.regmap = act8865->regmap;

  		if (pdata) {
  			struct act8865_regulator_data *rdata;
  
  			rdata = act8865_get_regulator_data(desc->id, pdata);
  			if (rdata) {
  				config.init_data = rdata->init_data;
  				config.of_node = rdata->of_node;
  			}

  		}

  		rdev = devm_regulator_register(dev, desc, &config);

  		if (IS_ERR(rdev)) {

  			dev_err(dev, "failed to register %s
  ", desc->name);

  			return PTR_ERR(rdev);

  		}
  	}

  	if (type == ACT8600) {
  		ret = act8600_charger_probe(dev, act8865->regmap);
  		if (ret < 0) {
  			if (ret != -EPROBE_DEFER)
  				dev_err(dev, "Failed to probe charger");
  			return ret;
  		}
  	}

  	i2c_set_clientdata(client, act8865);

  	/* Unlock expert registers for ACT8865. */
  	return type != ACT8865 ? 0 : regmap_write(act8865->regmap,
  						  ACT8865_SYS_UNLK_REGS, 0xef);

  }

  static const struct i2c_device_id act8865_ids[] = {

  	{ .name = "act8600", .driver_data = ACT8600 },

  	{ .name = "act8846", .driver_data = ACT8846 },

  	{ .name = "act8865", .driver_data = ACT8865 },

  	{ },
  };
  MODULE_DEVICE_TABLE(i2c, act8865_ids);
  
  static struct i2c_driver act8865_pmic_driver = {
  	.driver	= {
  		.name	= "act8865",

  	},
  	.probe		= act8865_pmic_probe,

  	.id_table	= act8865_ids,
  };
  
  module_i2c_driver(act8865_pmic_driver);

  MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");

  MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
  MODULE_LICENSE("GPL v2");