/*
   * Copyright (C) ST-Ericsson SA 2010
   *
   * License Terms: GNU General Public License v2
   *

   * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
   *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson

   *
   * AB8500 peripheral regulators
   *

   * AB8500 supports the following regulators:

   *   VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA

   */
  #include <linux/init.h>
  #include <linux/kernel.h>

  #include <linux/module.h>

  #include <linux/err.h>
  #include <linux/platform_device.h>

  #include <linux/mfd/abx500.h>

  #include <linux/mfd/abx500/ab8500.h>

  #include <linux/regulator/driver.h>
  #include <linux/regulator/machine.h>
  #include <linux/regulator/ab8500.h>
  
  /**
   * struct ab8500_regulator_info - ab8500 regulator information

   * @dev: device pointer

   * @desc: regulator description

   * @regulator_dev: regulator device
   * @max_uV: maximum voltage (for variable voltage supplies)
   * @min_uV: minimum voltage (for variable voltage supplies)
   * @fixed_uV: typical voltage (for fixed voltage supplies)

   * @update_bank: bank to control on/off

   * @update_reg: register to control on/off

   * @update_mask: mask to enable/disable regulator
   * @update_val_enable: bits to enable the regulator in normal (high power) mode

   * @voltage_bank: bank to control regulator voltage

   * @voltage_reg: register to control regulator voltage
   * @voltage_mask: mask to control regulator voltage

   * @voltages: supported voltage table

   * @voltages_len: number of supported voltages for the regulator

   * @delay: startup/set voltage delay in us

   */
  struct ab8500_regulator_info {
  	struct device		*dev;
  	struct regulator_desc	desc;

  	struct regulator_dev	*regulator;
  	int max_uV;
  	int min_uV;
  	int fixed_uV;

  	u8 update_bank;
  	u8 update_reg;

  	u8 update_mask;
  	u8 update_val_enable;

  	u8 voltage_bank;
  	u8 voltage_reg;
  	u8 voltage_mask;

  	int const *voltages;

  	int voltages_len;

  	unsigned int delay;

  };
  
  /* voltage tables for the vauxn/vintcore supplies */
  static const int ldo_vauxn_voltages[] = {
  	1100000,
  	1200000,
  	1300000,
  	1400000,
  	1500000,
  	1800000,
  	1850000,
  	1900000,
  	2500000,
  	2650000,
  	2700000,
  	2750000,
  	2800000,
  	2900000,
  	3000000,
  	3300000,
  };

  static const int ldo_vaux3_voltages[] = {
  	1200000,
  	1500000,
  	1800000,
  	2100000,
  	2500000,
  	2750000,
  	2790000,
  	2910000,
  };

  static const int ldo_vintcore_voltages[] = {
  	1200000,
  	1225000,
  	1250000,
  	1275000,
  	1300000,
  	1325000,
  	1350000,
  };
  
  static int ab8500_regulator_enable(struct regulator_dev *rdev)
  {

  	int ret;

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  	ret = abx500_mask_and_set_register_interruptible(info->dev,

  		info->update_bank, info->update_reg,
  		info->update_mask, info->update_val_enable);

  	if (ret < 0)
  		dev_err(rdev_get_dev(rdev),
  			"couldn't set enable bits for regulator
  ");

  
  	dev_vdbg(rdev_get_dev(rdev),
  		"%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x
  ",
  		info->desc.name, info->update_bank, info->update_reg,
  		info->update_mask, info->update_val_enable);

  	return ret;
  }
  
  static int ab8500_regulator_disable(struct regulator_dev *rdev)
  {

  	int ret;

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  	ret = abx500_mask_and_set_register_interruptible(info->dev,

  		info->update_bank, info->update_reg,
  		info->update_mask, 0x0);

  	if (ret < 0)
  		dev_err(rdev_get_dev(rdev),
  			"couldn't set disable bits for regulator
  ");

  
  	dev_vdbg(rdev_get_dev(rdev),
  		"%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x
  ",
  		info->desc.name, info->update_bank, info->update_reg,
  		info->update_mask, 0x0);

  	return ret;
  }
  
  static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
  {

  	int ret;

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	u8 regval;

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  	ret = abx500_get_register_interruptible(info->dev,

  		info->update_bank, info->update_reg, &regval);

  	if (ret < 0) {
  		dev_err(rdev_get_dev(rdev),
  			"couldn't read 0x%x register
  ", info->update_reg);
  		return ret;
  	}

  	dev_vdbg(rdev_get_dev(rdev),
  		"%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
  		" 0x%x
  ",
  		info->desc.name, info->update_bank, info->update_reg,
  		info->update_mask, regval);
  
  	if (regval & info->update_mask)

  		return true;
  	else
  		return false;
  }
  
  static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
  {

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  
  	/* return the uV for the fixed regulators */
  	if (info->fixed_uV)
  		return info->fixed_uV;

  	if (selector >= info->voltages_len)

  		return -EINVAL;

  	return info->voltages[selector];

  }
  
  static int ab8500_regulator_get_voltage(struct regulator_dev *rdev)
  {

  	int ret, val;

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	u8 regval;

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  	ret = abx500_get_register_interruptible(info->dev,
  			info->voltage_bank, info->voltage_reg, &regval);

  	if (ret < 0) {
  		dev_err(rdev_get_dev(rdev),
  			"couldn't read voltage reg for regulator
  ");
  		return ret;
  	}

  	dev_vdbg(rdev_get_dev(rdev),
  		"%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
  		" 0x%x
  ",
  		info->desc.name, info->voltage_bank, info->voltage_reg,
  		info->voltage_mask, regval);

  	/* vintcore has a different layout */

  	val = regval & info->voltage_mask;

  	if (info->desc.id == AB8500_LDO_INTCORE)

  		ret = info->voltages[val >> 0x3];

  	else

  		ret = info->voltages[val];

  
  	return ret;
  }
  
  static int ab8500_get_best_voltage_index(struct regulator_dev *rdev,
  		int min_uV, int max_uV)
  {
  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
  	int i;
  
  	/* check the supported voltage */
  	for (i = 0; i < info->voltages_len; i++) {

  		if ((info->voltages[i] >= min_uV) &&
  		    (info->voltages[i] <= max_uV))

  			return i;
  	}
  
  	return -EINVAL;
  }
  
  static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,

  					int min_uV, int max_uV,
  					unsigned *selector)

  {

  	int ret;

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	u8 regval;

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  
  	/* get the appropriate voltages within the range */
  	ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV);
  	if (ret < 0) {
  		dev_err(rdev_get_dev(rdev),
  				"couldn't get best voltage for regulator
  ");
  		return ret;
  	}

  	*selector = ret;

  	/* set the registers for the request */

  	regval = (u8)ret;

  	ret = abx500_mask_and_set_register_interruptible(info->dev,

  			info->voltage_bank, info->voltage_reg,
  			info->voltage_mask, regval);

  	if (ret < 0)
  		dev_err(rdev_get_dev(rdev),
  		"couldn't set voltage reg for regulator
  ");

  	dev_vdbg(rdev_get_dev(rdev),
  		"%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
  		" 0x%x
  ",
  		info->desc.name, info->voltage_bank, info->voltage_reg,
  		info->voltage_mask, regval);

  	return ret;
  }

  static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
  {
  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
  
  	return info->delay;
  }
  
  static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
  					     unsigned int old_sel,
  					     unsigned int new_sel)
  {
  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
  	int ret;
  
  	/* If the regulator isn't on, it won't take time here */
  	ret = ab8500_regulator_is_enabled(rdev);
  	if (ret < 0)
  		return ret;
  	if (!ret)
  		return 0;
  	return info->delay;
  }

  static struct regulator_ops ab8500_regulator_ops = {
  	.enable		= ab8500_regulator_enable,
  	.disable	= ab8500_regulator_disable,
  	.is_enabled	= ab8500_regulator_is_enabled,
  	.get_voltage	= ab8500_regulator_get_voltage,
  	.set_voltage	= ab8500_regulator_set_voltage,
  	.list_voltage	= ab8500_list_voltage,

  	.enable_time	= ab8500_regulator_enable_time,
  	.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,

  };
  
  static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
  {

  	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);

  	if (info == NULL) {
  		dev_err(rdev_get_dev(rdev), "regulator info null pointer
  ");

  		return -EINVAL;

  	}

  
  	return info->fixed_uV;
  }

  static struct regulator_ops ab8500_regulator_fixed_ops = {

  	.enable		= ab8500_regulator_enable,
  	.disable	= ab8500_regulator_disable,
  	.is_enabled	= ab8500_regulator_is_enabled,
  	.get_voltage	= ab8500_fixed_get_voltage,
  	.list_voltage	= ab8500_list_voltage,

  	.enable_time	= ab8500_regulator_enable_time,
  	.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,

  };

  static struct ab8500_regulator_info
  		ab8500_regulator_info[AB8500_NUM_REGULATORS] = {

  	/*

  	 * Variable Voltage Regulators
  	 *   name, min mV, max mV,
  	 *   update bank, reg, mask, enable val
  	 *   volt bank, reg, mask, table, table length

  	 */

  	[AB8500_LDO_AUX1] = {
  		.desc = {
  			.name		= "LDO-AUX1",
  			.ops		= &ab8500_regulator_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_AUX1,
  			.owner		= THIS_MODULE,
  			.n_voltages	= ARRAY_SIZE(ldo_vauxn_voltages),
  		},
  		.min_uV			= 1100000,
  		.max_uV			= 3300000,
  		.update_bank		= 0x04,
  		.update_reg		= 0x09,
  		.update_mask		= 0x03,
  		.update_val_enable	= 0x01,
  		.voltage_bank		= 0x04,
  		.voltage_reg		= 0x1f,
  		.voltage_mask		= 0x0f,
  		.voltages		= ldo_vauxn_voltages,
  		.voltages_len		= ARRAY_SIZE(ldo_vauxn_voltages),
  	},
  	[AB8500_LDO_AUX2] = {
  		.desc = {
  			.name		= "LDO-AUX2",
  			.ops		= &ab8500_regulator_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_AUX2,
  			.owner		= THIS_MODULE,
  			.n_voltages	= ARRAY_SIZE(ldo_vauxn_voltages),
  		},
  		.min_uV			= 1100000,
  		.max_uV			= 3300000,
  		.update_bank		= 0x04,
  		.update_reg		= 0x09,
  		.update_mask		= 0x0c,
  		.update_val_enable	= 0x04,
  		.voltage_bank		= 0x04,
  		.voltage_reg		= 0x20,
  		.voltage_mask		= 0x0f,
  		.voltages		= ldo_vauxn_voltages,
  		.voltages_len		= ARRAY_SIZE(ldo_vauxn_voltages),
  	},
  	[AB8500_LDO_AUX3] = {
  		.desc = {
  			.name		= "LDO-AUX3",
  			.ops		= &ab8500_regulator_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_AUX3,
  			.owner		= THIS_MODULE,
  			.n_voltages	= ARRAY_SIZE(ldo_vaux3_voltages),
  		},
  		.min_uV			= 1100000,
  		.max_uV			= 3300000,
  		.update_bank		= 0x04,
  		.update_reg		= 0x0a,
  		.update_mask		= 0x03,
  		.update_val_enable	= 0x01,
  		.voltage_bank		= 0x04,
  		.voltage_reg		= 0x21,
  		.voltage_mask		= 0x07,
  		.voltages		= ldo_vaux3_voltages,
  		.voltages_len		= ARRAY_SIZE(ldo_vaux3_voltages),
  	},
  	[AB8500_LDO_INTCORE] = {
  		.desc = {
  			.name		= "LDO-INTCORE",
  			.ops		= &ab8500_regulator_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_INTCORE,
  			.owner		= THIS_MODULE,
  			.n_voltages	= ARRAY_SIZE(ldo_vintcore_voltages),
  		},
  		.min_uV			= 1100000,
  		.max_uV			= 3300000,
  		.update_bank		= 0x03,
  		.update_reg		= 0x80,
  		.update_mask		= 0x44,
  		.update_val_enable	= 0x04,
  		.voltage_bank		= 0x03,
  		.voltage_reg		= 0x80,
  		.voltage_mask		= 0x38,
  		.voltages		= ldo_vintcore_voltages,
  		.voltages_len		= ARRAY_SIZE(ldo_vintcore_voltages),
  	},

  
  	/*

  	 * Fixed Voltage Regulators
  	 *   name, fixed mV,
  	 *   update bank, reg, mask, enable val

  	 */

  	[AB8500_LDO_TVOUT] = {
  		.desc = {
  			.name		= "LDO-TVOUT",
  			.ops		= &ab8500_regulator_fixed_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_TVOUT,
  			.owner		= THIS_MODULE,
  			.n_voltages	= 1,
  		},

  		.delay			= 10000,

  		.fixed_uV		= 2000000,
  		.update_bank		= 0x03,
  		.update_reg		= 0x80,
  		.update_mask		= 0x82,
  		.update_val_enable	= 0x02,
  	},

  	[AB8500_LDO_USB] = {
  		.desc = {
  			.name           = "LDO-USB",
  			.ops            = &ab8500_regulator_fixed_ops,
  			.type           = REGULATOR_VOLTAGE,
  			.id             = AB8500_LDO_USB,
  			.owner          = THIS_MODULE,
  			.n_voltages     = 1,
  		},
  		.fixed_uV               = 3300000,
  		.update_bank            = 0x03,
  		.update_reg             = 0x82,
  		.update_mask            = 0x03,
  		.update_val_enable      = 0x01,
  	},

  	[AB8500_LDO_AUDIO] = {
  		.desc = {
  			.name		= "LDO-AUDIO",
  			.ops		= &ab8500_regulator_fixed_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_AUDIO,
  			.owner		= THIS_MODULE,
  			.n_voltages	= 1,
  		},
  		.fixed_uV		= 2000000,
  		.update_bank		= 0x03,
  		.update_reg		= 0x83,
  		.update_mask		= 0x02,
  		.update_val_enable	= 0x02,
  	},
  	[AB8500_LDO_ANAMIC1] = {
  		.desc = {
  			.name		= "LDO-ANAMIC1",
  			.ops		= &ab8500_regulator_fixed_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_ANAMIC1,
  			.owner		= THIS_MODULE,
  			.n_voltages	= 1,
  		},
  		.fixed_uV		= 2050000,
  		.update_bank		= 0x03,
  		.update_reg		= 0x83,
  		.update_mask		= 0x08,
  		.update_val_enable	= 0x08,
  	},
  	[AB8500_LDO_ANAMIC2] = {
  		.desc = {
  			.name		= "LDO-ANAMIC2",
  			.ops		= &ab8500_regulator_fixed_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_ANAMIC2,
  			.owner		= THIS_MODULE,
  			.n_voltages	= 1,
  		},
  		.fixed_uV		= 2050000,
  		.update_bank		= 0x03,
  		.update_reg		= 0x83,
  		.update_mask		= 0x10,
  		.update_val_enable	= 0x10,
  	},
  	[AB8500_LDO_DMIC] = {
  		.desc = {
  			.name		= "LDO-DMIC",
  			.ops		= &ab8500_regulator_fixed_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_DMIC,
  			.owner		= THIS_MODULE,
  			.n_voltages	= 1,
  		},
  		.fixed_uV		= 1800000,
  		.update_bank		= 0x03,
  		.update_reg		= 0x83,
  		.update_mask		= 0x04,
  		.update_val_enable	= 0x04,
  	},
  	[AB8500_LDO_ANA] = {
  		.desc = {
  			.name		= "LDO-ANA",
  			.ops		= &ab8500_regulator_fixed_ops,
  			.type		= REGULATOR_VOLTAGE,
  			.id		= AB8500_LDO_ANA,
  			.owner		= THIS_MODULE,
  			.n_voltages	= 1,
  		},
  		.fixed_uV		= 1200000,
  		.update_bank		= 0x04,
  		.update_reg		= 0x06,
  		.update_mask		= 0x0c,
  		.update_val_enable	= 0x04,
  	},

  };

  struct ab8500_reg_init {
  	u8 bank;
  	u8 addr;
  	u8 mask;
  };
  
  #define REG_INIT(_id, _bank, _addr, _mask)	\
  	[_id] = {				\
  		.bank = _bank,			\
  		.addr = _addr,			\
  		.mask = _mask,			\
  	}
  
  static struct ab8500_reg_init ab8500_reg_init[] = {
  	/*
  	 * 0x30, VanaRequestCtrl
  	 * 0x0C, VpllRequestCtrl
  	 * 0xc0, VextSupply1RequestCtrl
  	 */
  	REG_INIT(AB8500_REGUREQUESTCTRL2,	0x03, 0x04, 0xfc),
  	/*
  	 * 0x03, VextSupply2RequestCtrl
  	 * 0x0c, VextSupply3RequestCtrl
  	 * 0x30, Vaux1RequestCtrl
  	 * 0xc0, Vaux2RequestCtrl
  	 */
  	REG_INIT(AB8500_REGUREQUESTCTRL3,	0x03, 0x05, 0xff),
  	/*
  	 * 0x03, Vaux3RequestCtrl
  	 * 0x04, SwHPReq
  	 */
  	REG_INIT(AB8500_REGUREQUESTCTRL4,	0x03, 0x06, 0x07),
  	/*
  	 * 0x08, VanaSysClkReq1HPValid
  	 * 0x20, Vaux1SysClkReq1HPValid
  	 * 0x40, Vaux2SysClkReq1HPValid
  	 * 0x80, Vaux3SysClkReq1HPValid
  	 */
  	REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1,	0x03, 0x07, 0xe8),
  	/*
  	 * 0x10, VextSupply1SysClkReq1HPValid
  	 * 0x20, VextSupply2SysClkReq1HPValid
  	 * 0x40, VextSupply3SysClkReq1HPValid
  	 */
  	REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2,	0x03, 0x08, 0x70),
  	/*
  	 * 0x08, VanaHwHPReq1Valid
  	 * 0x20, Vaux1HwHPReq1Valid
  	 * 0x40, Vaux2HwHPReq1Valid
  	 * 0x80, Vaux3HwHPReq1Valid
  	 */
  	REG_INIT(AB8500_REGUHWHPREQ1VALID1,	0x03, 0x09, 0xe8),
  	/*
  	 * 0x01, VextSupply1HwHPReq1Valid
  	 * 0x02, VextSupply2HwHPReq1Valid
  	 * 0x04, VextSupply3HwHPReq1Valid
  	 */
  	REG_INIT(AB8500_REGUHWHPREQ1VALID2,	0x03, 0x0a, 0x07),
  	/*
  	 * 0x08, VanaHwHPReq2Valid
  	 * 0x20, Vaux1HwHPReq2Valid
  	 * 0x40, Vaux2HwHPReq2Valid
  	 * 0x80, Vaux3HwHPReq2Valid
  	 */
  	REG_INIT(AB8500_REGUHWHPREQ2VALID1,	0x03, 0x0b, 0xe8),
  	/*
  	 * 0x01, VextSupply1HwHPReq2Valid
  	 * 0x02, VextSupply2HwHPReq2Valid
  	 * 0x04, VextSupply3HwHPReq2Valid
  	 */
  	REG_INIT(AB8500_REGUHWHPREQ2VALID2,	0x03, 0x0c, 0x07),
  	/*
  	 * 0x20, VanaSwHPReqValid
  	 * 0x80, Vaux1SwHPReqValid
  	 */
  	REG_INIT(AB8500_REGUSWHPREQVALID1,	0x03, 0x0d, 0xa0),
  	/*
  	 * 0x01, Vaux2SwHPReqValid
  	 * 0x02, Vaux3SwHPReqValid
  	 * 0x04, VextSupply1SwHPReqValid
  	 * 0x08, VextSupply2SwHPReqValid
  	 * 0x10, VextSupply3SwHPReqValid
  	 */
  	REG_INIT(AB8500_REGUSWHPREQVALID2,	0x03, 0x0e, 0x1f),
  	/*
  	 * 0x02, SysClkReq2Valid1
  	 * ...
  	 * 0x80, SysClkReq8Valid1
  	 */
  	REG_INIT(AB8500_REGUSYSCLKREQVALID1,	0x03, 0x0f, 0xfe),
  	/*
  	 * 0x02, SysClkReq2Valid2
  	 * ...
  	 * 0x80, SysClkReq8Valid2
  	 */
  	REG_INIT(AB8500_REGUSYSCLKREQVALID2,	0x03, 0x10, 0xfe),
  	/*
  	 * 0x02, VTVoutEna
  	 * 0x04, Vintcore12Ena
  	 * 0x38, Vintcore12Sel
  	 * 0x40, Vintcore12LP
  	 * 0x80, VTVoutLP
  	 */
  	REG_INIT(AB8500_REGUMISC1,		0x03, 0x80, 0xfe),
  	/*
  	 * 0x02, VaudioEna
  	 * 0x04, VdmicEna
  	 * 0x08, Vamic1Ena
  	 * 0x10, Vamic2Ena
  	 */
  	REG_INIT(AB8500_VAUDIOSUPPLY,		0x03, 0x83, 0x1e),
  	/*
  	 * 0x01, Vamic1_dzout
  	 * 0x02, Vamic2_dzout
  	 */
  	REG_INIT(AB8500_REGUCTRL1VAMIC,		0x03, 0x84, 0x03),
  	/*
  	 * 0x0c, VanaRegu
  	 * 0x03, VpllRegu
  	 */
  	REG_INIT(AB8500_VPLLVANAREGU,		0x04, 0x06, 0x0f),
  	/*
  	 * 0x01, VrefDDREna
  	 * 0x02, VrefDDRSleepMode
  	 */
  	REG_INIT(AB8500_VREFDDR,		0x04, 0x07, 0x03),
  	/*
  	 * 0x03, VextSupply1Regu
  	 * 0x0c, VextSupply2Regu
  	 * 0x30, VextSupply3Regu
  	 * 0x40, ExtSupply2Bypass
  	 * 0x80, ExtSupply3Bypass
  	 */
  	REG_INIT(AB8500_EXTSUPPLYREGU,		0x04, 0x08, 0xff),
  	/*
  	 * 0x03, Vaux1Regu
  	 * 0x0c, Vaux2Regu
  	 */
  	REG_INIT(AB8500_VAUX12REGU,		0x04, 0x09, 0x0f),
  	/*
  	 * 0x03, Vaux3Regu
  	 */
  	REG_INIT(AB8500_VRF1VAUX3REGU,		0x04, 0x0a, 0x03),
  	/*
  	 * 0x3f, Vsmps1Sel1
  	 */
  	REG_INIT(AB8500_VSMPS1SEL1,		0x04, 0x13, 0x3f),
  	/*
  	 * 0x0f, Vaux1Sel
  	 */
  	REG_INIT(AB8500_VAUX1SEL,		0x04, 0x1f, 0x0f),
  	/*
  	 * 0x0f, Vaux2Sel
  	 */
  	REG_INIT(AB8500_VAUX2SEL,		0x04, 0x20, 0x0f),
  	/*
  	 * 0x07, Vaux3Sel
  	 */
  	REG_INIT(AB8500_VRF1VAUX3SEL,		0x04, 0x21, 0x07),
  	/*
  	 * 0x01, VextSupply12LP
  	 */
  	REG_INIT(AB8500_REGUCTRL2SPARE,		0x04, 0x22, 0x01),
  	/*
  	 * 0x04, Vaux1Disch
  	 * 0x08, Vaux2Disch
  	 * 0x10, Vaux3Disch
  	 * 0x20, Vintcore12Disch
  	 * 0x40, VTVoutDisch
  	 * 0x80, VaudioDisch
  	 */
  	REG_INIT(AB8500_REGUCTRLDISCH,		0x04, 0x43, 0xfc),
  	/*
  	 * 0x02, VanaDisch
  	 * 0x04, VdmicPullDownEna
  	 * 0x10, VdmicDisch
  	 */
  	REG_INIT(AB8500_REGUCTRLDISCH2,		0x04, 0x44, 0x16),
  };

  static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
  {
  	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);

  	struct ab8500_platform_data *pdata;

  	int i, err;
  
  	if (!ab8500) {
  		dev_err(&pdev->dev, "null mfd parent
  ");
  		return -EINVAL;
  	}

  	pdata = dev_get_platdata(ab8500->dev);

  	if (!pdata) {
  		dev_err(&pdev->dev, "null pdata
  ");
  		return -EINVAL;
  	}

  	/* make sure the platform data has the correct size */
  	if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {

  		dev_err(&pdev->dev, "Configuration error: size mismatch.
  ");

  		return -EINVAL;
  	}

  	/* initialize registers */
  	for (i = 0; i < pdata->num_regulator_reg_init; i++) {
  		int id;
  		u8 value;
  
  		id = pdata->regulator_reg_init[i].id;
  		value = pdata->regulator_reg_init[i].value;
  
  		/* check for configuration errors */
  		if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
  			dev_err(&pdev->dev,
  				"Configuration error: id outside range.
  ");
  			return -EINVAL;
  		}
  		if (value & ~ab8500_reg_init[id].mask) {
  			dev_err(&pdev->dev,
  				"Configuration error: value outside mask.
  ");
  			return -EINVAL;
  		}
  
  		/* initialize register */
  		err = abx500_mask_and_set_register_interruptible(&pdev->dev,
  			ab8500_reg_init[id].bank,
  			ab8500_reg_init[id].addr,
  			ab8500_reg_init[id].mask,
  			value);
  		if (err < 0) {
  			dev_err(&pdev->dev,
  				"Failed to initialize 0x%02x, 0x%02x.
  ",
  				ab8500_reg_init[id].bank,
  				ab8500_reg_init[id].addr);
  			return err;
  		}
  		dev_vdbg(&pdev->dev,
  			"  init: 0x%02x, 0x%02x, 0x%02x, 0x%02x
  ",
  			ab8500_reg_init[id].bank,
  			ab8500_reg_init[id].addr,
  			ab8500_reg_init[id].mask,
  			value);
  	}

  	/* register all regulators */
  	for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
  		struct ab8500_regulator_info *info = NULL;
  
  		/* assign per-regulator data */
  		info = &ab8500_regulator_info[i];
  		info->dev = &pdev->dev;

  		/* fix for hardware before ab8500v2.0 */
  		if (abx500_get_chip_id(info->dev) < 0x20) {
  			if (info->desc.id == AB8500_LDO_AUX3) {
  				info->desc.n_voltages =
  					ARRAY_SIZE(ldo_vauxn_voltages);

  				info->voltages = ldo_vauxn_voltages;

  				info->voltages_len =
  					ARRAY_SIZE(ldo_vauxn_voltages);
  				info->voltage_mask = 0xf;
  			}
  		}
  
  		/* register regulator with framework */

  		info->regulator = regulator_register(&info->desc, &pdev->dev,

  				&pdata->regulator[i], info, NULL);

  		if (IS_ERR(info->regulator)) {
  			err = PTR_ERR(info->regulator);
  			dev_err(&pdev->dev, "failed to register regulator %s
  ",
  					info->desc.name);
  			/* when we fail, un-register all earlier regulators */

  			while (--i >= 0) {

  				info = &ab8500_regulator_info[i];
  				regulator_unregister(info->regulator);

  			}
  			return err;
  		}

  
  		dev_vdbg(rdev_get_dev(info->regulator),
  			"%s-probed
  ", info->desc.name);

  	}
  
  	return 0;
  }
  
  static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
  {
  	int i;
  
  	for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
  		struct ab8500_regulator_info *info = NULL;
  		info = &ab8500_regulator_info[i];

  
  		dev_vdbg(rdev_get_dev(info->regulator),
  			"%s-remove
  ", info->desc.name);

  		regulator_unregister(info->regulator);
  	}
  
  	return 0;
  }
  
  static struct platform_driver ab8500_regulator_driver = {
  	.probe = ab8500_regulator_probe,
  	.remove = __devexit_p(ab8500_regulator_remove),
  	.driver         = {
  		.name   = "ab8500-regulator",
  		.owner  = THIS_MODULE,
  	},
  };
  
  static int __init ab8500_regulator_init(void)
  {
  	int ret;
  
  	ret = platform_driver_register(&ab8500_regulator_driver);
  	if (ret != 0)
  		pr_err("Failed to register ab8500 regulator: %d
  ", ret);
  
  	return ret;
  }
  subsys_initcall(ab8500_regulator_init);
  
  static void __exit ab8500_regulator_exit(void)
  {
  	platform_driver_unregister(&ab8500_regulator_driver);
  }
  module_exit(ab8500_regulator_exit);
  
  MODULE_LICENSE("GPL v2");
  MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
  MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
  MODULE_ALIAS("platform:ab8500-regulator");