// SPDX-License-Identifier: GPL-2.0+
  //
  // Regulator device driver for DA9061 and DA9062.
  // Copyright (C) 2015-2017  Dialog Semiconductor

  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/err.h>
  #include <linux/slab.h>
  #include <linux/of.h>
  #include <linux/platform_device.h>
  #include <linux/regmap.h>
  #include <linux/regulator/driver.h>
  #include <linux/regulator/machine.h>
  #include <linux/regulator/of_regulator.h>
  #include <linux/mfd/da9062/core.h>
  #include <linux/mfd/da9062/registers.h>

  #include <dt-bindings/regulator/dlg,da9063-regulator.h>

  
  /* Regulator IDs */
  enum {

  	DA9061_ID_BUCK1,
  	DA9061_ID_BUCK2,
  	DA9061_ID_BUCK3,
  	DA9061_ID_LDO1,
  	DA9061_ID_LDO2,
  	DA9061_ID_LDO3,
  	DA9061_ID_LDO4,
  	DA9061_MAX_REGULATORS,
  };
  
  enum {

  	DA9062_ID_BUCK1,
  	DA9062_ID_BUCK2,
  	DA9062_ID_BUCK3,
  	DA9062_ID_BUCK4,
  	DA9062_ID_LDO1,
  	DA9062_ID_LDO2,
  	DA9062_ID_LDO3,
  	DA9062_ID_LDO4,
  	DA9062_MAX_REGULATORS,
  };
  
  /* Regulator capabilities and registers description */
  struct da9062_regulator_info {
  	struct regulator_desc desc;

  	/* Main register fields */
  	struct reg_field mode;
  	struct reg_field suspend;
  	struct reg_field sleep;
  	struct reg_field suspend_sleep;
  	unsigned int suspend_vsel_reg;

  	/* Event detection bit */
  	struct reg_field oc_event;
  };
  
  /* Single regulator settings */
  struct da9062_regulator {
  	struct regulator_desc			desc;
  	struct regulator_dev			*rdev;
  	struct da9062				*hw;
  	const struct da9062_regulator_info	*info;
  
  	struct regmap_field			*mode;
  	struct regmap_field			*suspend;
  	struct regmap_field			*sleep;
  	struct regmap_field			*suspend_sleep;

  };
  
  /* Encapsulates all information for the regulators driver */
  struct da9062_regulators {
  	int					irq_ldo_lim;
  	unsigned				n_regulators;
  	/* Array size to be defined during init. Keep at end. */

  	struct da9062_regulator			regulator[];

  };

  /* Regulator operations */

  /* Current limits array (in uA)
   * - DA9061_ID_[BUCK1|BUCK3]
   * - DA9062_ID_[BUCK1|BUCK2|BUCK4]
   * Entry indexes corresponds to register values.
   */

  static const unsigned int da9062_buck_a_limits[] = {

  	 500000,  600000,  700000,  800000,  900000, 1000000, 1100000, 1200000,
  	1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
  };

  /* Current limits array (in uA)
   * - DA9061_ID_BUCK2
   * - DA9062_ID_BUCK3
   * Entry indexes corresponds to register values.
   */

  static const unsigned int da9062_buck_b_limits[] = {

  	1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
  	2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
  };

  static unsigned int da9062_map_buck_mode(unsigned int mode)
  {
  	switch (mode) {
  	case DA9063_BUCK_MODE_SLEEP:
  		return REGULATOR_MODE_STANDBY;
  	case DA9063_BUCK_MODE_SYNC:
  		return REGULATOR_MODE_FAST;
  	case DA9063_BUCK_MODE_AUTO:
  		return REGULATOR_MODE_NORMAL;
  	default:

  		return REGULATOR_MODE_INVALID;

  	}
  }

  static int da9062_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  	unsigned val;
  
  	switch (mode) {
  	case REGULATOR_MODE_FAST:

  		val = DA9063_BUCK_MODE_SYNC;

  		break;
  	case REGULATOR_MODE_NORMAL:

  		val = DA9063_BUCK_MODE_AUTO;

  		break;
  	case REGULATOR_MODE_STANDBY:

  		val = DA9063_BUCK_MODE_SLEEP;

  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return regmap_field_write(regl->mode, val);
  }
  
  /*
   * Bucks use single mode register field for normal operation
   * and suspend state.
   * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
   */
  
  static unsigned da9062_buck_get_mode(struct regulator_dev *rdev)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);

  	unsigned int val;

  	int ret;
  
  	ret = regmap_field_read(regl->mode, &val);
  	if (ret < 0)
  		return ret;
  
  	switch (val) {
  	default:

  		/* Sleep flag bit decides the mode */
  		break;

  	case DA9063_BUCK_MODE_SLEEP:

  		return REGULATOR_MODE_STANDBY;

  	case DA9063_BUCK_MODE_SYNC:

  		return REGULATOR_MODE_FAST;

  	case DA9063_BUCK_MODE_AUTO:

  		return REGULATOR_MODE_NORMAL;
  	}

  	ret = regmap_field_read(regl->sleep, &val);

  	if (ret < 0)
  		return 0;
  
  	if (val)

  		return REGULATOR_MODE_STANDBY;

  	else

  		return REGULATOR_MODE_FAST;

  }
  
  /*
   * LDOs use sleep flags - one for normal and one for suspend state.
   * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
   */
  
  static int da9062_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  	unsigned val;
  
  	switch (mode) {
  	case REGULATOR_MODE_NORMAL:
  		val = 0;
  		break;
  	case REGULATOR_MODE_STANDBY:
  		val = 1;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return regmap_field_write(regl->sleep, val);
  }
  
  static unsigned da9062_ldo_get_mode(struct regulator_dev *rdev)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);

  	int ret, val;

  	ret = regmap_field_read(regl->sleep, &val);

  	if (ret < 0)
  		return 0;
  
  	if (val)
  		return REGULATOR_MODE_STANDBY;
  	else
  		return REGULATOR_MODE_NORMAL;
  }
  
  static int da9062_buck_get_status(struct regulator_dev *rdev)
  {
  	int ret = regulator_is_enabled_regmap(rdev);
  
  	if (ret == 0) {
  		ret = REGULATOR_STATUS_OFF;
  	} else if (ret > 0) {
  		ret = da9062_buck_get_mode(rdev);
  		if (ret > 0)
  			ret = regulator_mode_to_status(ret);
  		else if (ret == 0)
  			ret = -EIO;
  	}
  
  	return ret;
  }
  
  static int da9062_ldo_get_status(struct regulator_dev *rdev)
  {
  	int ret = regulator_is_enabled_regmap(rdev);
  
  	if (ret == 0) {
  		ret = REGULATOR_STATUS_OFF;
  	} else if (ret > 0) {
  		ret = da9062_ldo_get_mode(rdev);
  		if (ret > 0)
  			ret = regulator_mode_to_status(ret);
  		else if (ret == 0)
  			ret = -EIO;
  	}
  
  	return ret;
  }
  
  static int da9062_set_suspend_voltage(struct regulator_dev *rdev, int uv)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  	const struct da9062_regulator_info *rinfo = regl->info;
  	int ret, sel;
  
  	sel = regulator_map_voltage_linear(rdev, uv, uv);
  	if (sel < 0)
  		return sel;
  
  	sel <<= ffs(rdev->desc->vsel_mask) - 1;
  
  	ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
  				 rdev->desc->vsel_mask, sel);
  
  	return ret;
  }
  
  static int da9062_suspend_enable(struct regulator_dev *rdev)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  
  	return regmap_field_write(regl->suspend, 1);
  }
  
  static int da9062_suspend_disable(struct regulator_dev *rdev)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  
  	return regmap_field_write(regl->suspend, 0);
  }
  
  static int da9062_buck_set_suspend_mode(struct regulator_dev *rdev,
  					unsigned mode)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  	int val;
  
  	switch (mode) {
  	case REGULATOR_MODE_FAST:

  		val = DA9063_BUCK_MODE_SYNC;

  		break;
  	case REGULATOR_MODE_NORMAL:

  		val = DA9063_BUCK_MODE_AUTO;

  		break;
  	case REGULATOR_MODE_STANDBY:

  		val = DA9063_BUCK_MODE_SLEEP;

  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return regmap_field_write(regl->mode, val);
  }
  
  static int da9062_ldo_set_suspend_mode(struct regulator_dev *rdev,
  						unsigned mode)
  {
  	struct da9062_regulator *regl = rdev_get_drvdata(rdev);
  	unsigned val;
  
  	switch (mode) {
  	case REGULATOR_MODE_NORMAL:
  		val = 0;
  		break;
  	case REGULATOR_MODE_STANDBY:
  		val = 1;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return regmap_field_write(regl->suspend_sleep, val);
  }

  static const struct regulator_ops da9062_buck_ops = {

  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,
  	.is_enabled		= regulator_is_enabled_regmap,
  	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
  	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
  	.list_voltage		= regulator_list_voltage_linear,

  	.set_current_limit	= regulator_set_current_limit_regmap,
  	.get_current_limit	= regulator_get_current_limit_regmap,

  	.set_mode		= da9062_buck_set_mode,
  	.get_mode		= da9062_buck_get_mode,
  	.get_status		= da9062_buck_get_status,
  	.set_suspend_voltage	= da9062_set_suspend_voltage,
  	.set_suspend_enable	= da9062_suspend_enable,
  	.set_suspend_disable	= da9062_suspend_disable,
  	.set_suspend_mode	= da9062_buck_set_suspend_mode,
  };

  static const struct regulator_ops da9062_ldo_ops = {

  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,
  	.is_enabled		= regulator_is_enabled_regmap,
  	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
  	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
  	.list_voltage		= regulator_list_voltage_linear,
  	.set_mode		= da9062_ldo_set_mode,
  	.get_mode		= da9062_ldo_get_mode,
  	.get_status		= da9062_ldo_get_status,
  	.set_suspend_voltage	= da9062_set_suspend_voltage,
  	.set_suspend_enable	= da9062_suspend_enable,
  	.set_suspend_disable	= da9062_suspend_disable,
  	.set_suspend_mode	= da9062_ldo_set_suspend_mode,
  };

  /* DA9061 Regulator information */
  static const struct da9062_regulator_info local_da9061_regulator_info[] = {
  	{
  		.desc.id = DA9061_ID_BUCK1,
  		.desc.name = "DA9061 BUCK1",
  		.desc.of_match = of_match_ptr("buck1"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (300) * 1000,
  		.desc.uV_step = (10) * 1000,
  		.desc.n_voltages = ((1570) - (300))/(10) + 1,

  		.desc.curr_table = da9062_buck_a_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_C,
  		.desc.csel_mask = DA9062AA_BUCK1_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK1_CONT,
  		.desc.enable_mask = DA9062AA_BUCK1_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK1_A,
  		.desc.vsel_mask = DA9062AA_VBUCK1_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK1_A,
  			__builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B,
  			__builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK1_B,
  		.mode = REG_FIELD(DA9062AA_BUCK1_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK1_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK1_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK1_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9061_ID_BUCK2,
  		.desc.name = "DA9061 BUCK2",
  		.desc.of_match = of_match_ptr("buck2"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (800) * 1000,
  		.desc.uV_step = (20) * 1000,
  		.desc.n_voltages = ((3340) - (800))/(20) + 1,

  		.desc.curr_table = da9062_buck_b_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_b_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_A,
  		.desc.csel_mask = DA9062AA_BUCK3_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK3_CONT,
  		.desc.enable_mask = DA9062AA_BUCK3_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK3_A,
  		.desc.vsel_mask = DA9062AA_VBUCK3_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK3_A,
  			__builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B,
  			__builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK3_B,
  		.mode = REG_FIELD(DA9062AA_BUCK3_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK3_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK3_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK3_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9061_ID_BUCK3,
  		.desc.name = "DA9061 BUCK3",
  		.desc.of_match = of_match_ptr("buck3"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (530) * 1000,
  		.desc.uV_step = (10) * 1000,
  		.desc.n_voltages = ((1800) - (530))/(10) + 1,

  		.desc.curr_table = da9062_buck_a_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_B,
  		.desc.csel_mask = DA9062AA_BUCK4_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK4_CONT,
  		.desc.enable_mask = DA9062AA_BUCK4_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK4_A,
  		.desc.vsel_mask = DA9062AA_VBUCK4_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK4_A,
  			__builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B,
  			__builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK4_B,
  		.mode = REG_FIELD(DA9062AA_BUCK4_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK4_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK4_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK4_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9061_ID_LDO1,
  		.desc.name = "DA9061 LDO1",
  		.desc.of_match = of_match_ptr("ldo1"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO1_CONT,
  		.desc.enable_mask = DA9062AA_LDO1_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO1_A,
  		.desc.vsel_mask = DA9062AA_VLDO1_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO1_A,
  			__builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B,
  			__builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO1_B,

  		.suspend = REG_FIELD(DA9062AA_LDO1_CONT,
  			__builtin_ffs((int)DA9062AA_LDO1_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO1_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1),
  	},
  	{
  		.desc.id = DA9061_ID_LDO2,
  		.desc.name = "DA9061 LDO2",
  		.desc.of_match = of_match_ptr("ldo2"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO2_CONT,
  		.desc.enable_mask = DA9062AA_LDO2_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO2_A,
  		.desc.vsel_mask = DA9062AA_VLDO2_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO2_A,
  			__builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B,
  			__builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO2_B,

  		.suspend = REG_FIELD(DA9062AA_LDO2_CONT,
  			__builtin_ffs((int)DA9062AA_LDO2_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO2_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1),
  	},
  	{
  		.desc.id = DA9061_ID_LDO3,
  		.desc.name = "DA9061 LDO3",
  		.desc.of_match = of_match_ptr("ldo3"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO3_CONT,
  		.desc.enable_mask = DA9062AA_LDO3_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO3_A,
  		.desc.vsel_mask = DA9062AA_VLDO3_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO3_A,
  			__builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B,
  			__builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO3_B,

  		.suspend = REG_FIELD(DA9062AA_LDO3_CONT,
  			__builtin_ffs((int)DA9062AA_LDO3_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO3_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1),
  	},
  	{
  		.desc.id = DA9061_ID_LDO4,
  		.desc.name = "DA9061 LDO4",
  		.desc.of_match = of_match_ptr("ldo4"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO4_CONT,
  		.desc.enable_mask = DA9062AA_LDO4_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO4_A,
  		.desc.vsel_mask = DA9062AA_VLDO4_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO4_A,
  			__builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B,
  			__builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO4_B,

  		.suspend = REG_FIELD(DA9062AA_LDO4_CONT,
  			__builtin_ffs((int)DA9062AA_LDO4_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO4_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1),
  	},
  };
  
  /* DA9062 Regulator information */
  static const struct da9062_regulator_info local_da9062_regulator_info[] = {

  	{
  		.desc.id = DA9062_ID_BUCK1,
  		.desc.name = "DA9062 BUCK1",
  		.desc.of_match = of_match_ptr("buck1"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (300) * 1000,
  		.desc.uV_step = (10) * 1000,
  		.desc.n_voltages = ((1570) - (300))/(10) + 1,

  		.desc.curr_table = da9062_buck_a_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_C,
  		.desc.csel_mask = DA9062AA_BUCK1_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK1_CONT,
  		.desc.enable_mask = DA9062AA_BUCK1_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK1_A,
  		.desc.vsel_mask = DA9062AA_VBUCK1_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK1_A,
  			__builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B,
  			__builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK1_B,
  		.mode = REG_FIELD(DA9062AA_BUCK1_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK1_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK1_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK1_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9062_ID_BUCK2,
  		.desc.name = "DA9062 BUCK2",
  		.desc.of_match = of_match_ptr("buck2"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (300) * 1000,
  		.desc.uV_step = (10) * 1000,
  		.desc.n_voltages = ((1570) - (300))/(10) + 1,

  		.desc.curr_table = da9062_buck_a_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_C,
  		.desc.csel_mask = DA9062AA_BUCK2_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK2_CONT,
  		.desc.enable_mask = DA9062AA_BUCK2_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK2_A,
  		.desc.vsel_mask = DA9062AA_VBUCK2_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK2_A,
  			__builtin_ffs((int)DA9062AA_BUCK2_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK2_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK2_B,
  			__builtin_ffs((int)DA9062AA_BUCK2_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK2_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK2_B,
  		.mode = REG_FIELD(DA9062AA_BUCK2_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK2_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK2_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK2_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK2_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK2_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9062_ID_BUCK3,
  		.desc.name = "DA9062 BUCK3",
  		.desc.of_match = of_match_ptr("buck3"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (800) * 1000,
  		.desc.uV_step = (20) * 1000,
  		.desc.n_voltages = ((3340) - (800))/(20) + 1,

  		.desc.curr_table = da9062_buck_b_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_b_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_A,
  		.desc.csel_mask = DA9062AA_BUCK3_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK3_CONT,
  		.desc.enable_mask = DA9062AA_BUCK3_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK3_A,
  		.desc.vsel_mask = DA9062AA_VBUCK3_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK3_A,
  			__builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B,
  			__builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK3_B,
  		.mode = REG_FIELD(DA9062AA_BUCK3_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK3_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK3_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK3_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9062_ID_BUCK4,
  		.desc.name = "DA9062 BUCK4",
  		.desc.of_match = of_match_ptr("buck4"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_buck_ops,
  		.desc.min_uV = (530) * 1000,
  		.desc.uV_step = (10) * 1000,
  		.desc.n_voltages = ((1800) - (530))/(10) + 1,

  		.desc.curr_table = da9062_buck_a_limits,
  		.desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
  		.desc.csel_reg = DA9062AA_BUCK_ILIM_B,
  		.desc.csel_mask = DA9062AA_BUCK4_ILIM_MASK,

  		.desc.enable_reg = DA9062AA_BUCK4_CONT,
  		.desc.enable_mask = DA9062AA_BUCK4_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VBUCK4_A,
  		.desc.vsel_mask = DA9062AA_VBUCK4_A_MASK,
  		.desc.linear_min_sel = 0,

  		.desc.of_map_mode = da9062_map_buck_mode,

  		.sleep = REG_FIELD(DA9062AA_VBUCK4_A,
  			__builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B,
  			__builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VBUCK4_B,
  		.mode = REG_FIELD(DA9062AA_BUCK4_CFG,
  			__builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),

  		.suspend = REG_FIELD(DA9062AA_BUCK4_CONT,
  			__builtin_ffs((int)DA9062AA_BUCK4_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_BUCK4_CONF_MASK) - 1),

  	},
  	{
  		.desc.id = DA9062_ID_LDO1,
  		.desc.name = "DA9062 LDO1",
  		.desc.of_match = of_match_ptr("ldo1"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO1_CONT,
  		.desc.enable_mask = DA9062AA_LDO1_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO1_A,
  		.desc.vsel_mask = DA9062AA_VLDO1_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO1_A,
  			__builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B,
  			__builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO1_B,

  		.suspend = REG_FIELD(DA9062AA_LDO1_CONT,
  			__builtin_ffs((int)DA9062AA_LDO1_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO1_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1),
  	},
  	{
  		.desc.id = DA9062_ID_LDO2,
  		.desc.name = "DA9062 LDO2",
  		.desc.of_match = of_match_ptr("ldo2"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO2_CONT,
  		.desc.enable_mask = DA9062AA_LDO2_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO2_A,
  		.desc.vsel_mask = DA9062AA_VLDO2_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO2_A,
  			__builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B,
  			__builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO2_B,

  		.suspend = REG_FIELD(DA9062AA_LDO2_CONT,
  			__builtin_ffs((int)DA9062AA_LDO2_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO2_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1),
  	},
  	{
  		.desc.id = DA9062_ID_LDO3,
  		.desc.name = "DA9062 LDO3",
  		.desc.of_match = of_match_ptr("ldo3"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO3_CONT,
  		.desc.enable_mask = DA9062AA_LDO3_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO3_A,
  		.desc.vsel_mask = DA9062AA_VLDO3_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO3_A,
  			__builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B,
  			__builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO3_B,

  		.suspend = REG_FIELD(DA9062AA_LDO3_CONT,
  			__builtin_ffs((int)DA9062AA_LDO3_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO3_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1),
  	},
  	{
  		.desc.id = DA9062_ID_LDO4,
  		.desc.name = "DA9062 LDO4",
  		.desc.of_match = of_match_ptr("ldo4"),
  		.desc.regulators_node = of_match_ptr("regulators"),
  		.desc.ops = &da9062_ldo_ops,
  		.desc.min_uV = (900) * 1000,
  		.desc.uV_step = (50) * 1000,

  		.desc.n_voltages = ((3600) - (900))/(50) + 1
  				+ DA9062AA_VLDO_A_MIN_SEL,

  		.desc.enable_reg = DA9062AA_LDO4_CONT,
  		.desc.enable_mask = DA9062AA_LDO4_EN_MASK,
  		.desc.vsel_reg = DA9062AA_VLDO4_A,
  		.desc.vsel_mask = DA9062AA_VLDO4_A_MASK,

  		.desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,

  		.sleep = REG_FIELD(DA9062AA_VLDO4_A,
  			__builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1),
  		.suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B,
  			__builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
  		.suspend_vsel_reg = DA9062AA_VLDO4_B,

  		.suspend = REG_FIELD(DA9062AA_LDO4_CONT,
  			__builtin_ffs((int)DA9062AA_LDO4_CONF_MASK) - 1,

  			sizeof(unsigned int) * 8 -

  			__builtin_clz(DA9062AA_LDO4_CONF_MASK) - 1),

  		.oc_event = REG_FIELD(DA9062AA_STATUS_D,
  			__builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
  			sizeof(unsigned int) * 8 -
  			__builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1),
  	},
  };
  
  /* Regulator interrupt handlers */
  static irqreturn_t da9062_ldo_lim_event(int irq, void *data)
  {
  	struct da9062_regulators *regulators = data;
  	struct da9062 *hw = regulators->regulator[0].hw;
  	struct da9062_regulator *regl;
  	int handled = IRQ_NONE;
  	int bits, i, ret;
  
  	ret = regmap_read(hw->regmap, DA9062AA_STATUS_D, &bits);
  	if (ret < 0) {
  		dev_err(hw->dev,
  			"Failed to read LDO overcurrent indicator
  ");
  		goto ldo_lim_error;
  	}
  
  	for (i = regulators->n_regulators - 1; i >= 0; i--) {
  		regl = &regulators->regulator[i];
  		if (regl->info->oc_event.reg != DA9062AA_STATUS_D)
  			continue;
  
  		if (BIT(regl->info->oc_event.lsb) & bits) {

  			regulator_lock(regl->rdev);

  			regulator_notifier_call_chain(regl->rdev,
  					REGULATOR_EVENT_OVER_CURRENT, NULL);

  			regulator_unlock(regl->rdev);

  			handled = IRQ_HANDLED;
  		}
  	}
  
  ldo_lim_error:
  	return handled;
  }
  
  static int da9062_regulator_probe(struct platform_device *pdev)
  {
  	struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);

  	struct da9062_regulators *regulators;
  	struct da9062_regulator *regl;
  	struct regulator_config config = { };

  	const struct da9062_regulator_info *rinfo;

  	int irq, n, ret;

  	int max_regulators;
  
  	switch (chip->chip_type) {
  	case COMPAT_TYPE_DA9061:
  		max_regulators = DA9061_MAX_REGULATORS;
  		rinfo = local_da9061_regulator_info;
  		break;
  	case COMPAT_TYPE_DA9062:
  		max_regulators = DA9062_MAX_REGULATORS;
  		rinfo = local_da9062_regulator_info;
  		break;
  	default:
  		dev_err(chip->dev, "Unrecognised chip type
  ");
  		return -ENODEV;
  	}

  
  	/* Allocate memory required by usable regulators */

  	regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, regulator,
  				  max_regulators), GFP_KERNEL);

  	if (!regulators)
  		return -ENOMEM;

  	regulators->n_regulators = max_regulators;

  	platform_set_drvdata(pdev, regulators);

  	for (n = 0; n < regulators->n_regulators; n++) {

  		/* Initialise regulator structure */
  		regl = &regulators->regulator[n];
  		regl->hw = chip;

  		regl->info = &rinfo[n];

  		regl->desc = regl->info->desc;
  		regl->desc.type = REGULATOR_VOLTAGE;
  		regl->desc.owner = THIS_MODULE;

  		if (regl->info->mode.reg) {

  			regl->mode = devm_regmap_field_alloc(
  					&pdev->dev,
  					chip->regmap,
  					regl->info->mode);

  			if (IS_ERR(regl->mode))
  				return PTR_ERR(regl->mode);
  		}
  
  		if (regl->info->suspend.reg) {

  			regl->suspend = devm_regmap_field_alloc(
  					&pdev->dev,
  					chip->regmap,
  					regl->info->suspend);

  			if (IS_ERR(regl->suspend))
  				return PTR_ERR(regl->suspend);
  		}
  
  		if (regl->info->sleep.reg) {

  			regl->sleep = devm_regmap_field_alloc(
  					&pdev->dev,
  					chip->regmap,
  					regl->info->sleep);

  			if (IS_ERR(regl->sleep))
  				return PTR_ERR(regl->sleep);
  		}
  
  		if (regl->info->suspend_sleep.reg) {

  			regl->suspend_sleep = devm_regmap_field_alloc(
  					&pdev->dev,
  					chip->regmap,
  					regl->info->suspend_sleep);

  			if (IS_ERR(regl->suspend_sleep))
  				return PTR_ERR(regl->suspend_sleep);
  		}

  		/* Register regulator */
  		memset(&config, 0, sizeof(config));
  		config.dev = chip->dev;
  		config.driver_data = regl;
  		config.regmap = chip->regmap;
  
  		regl->rdev = devm_regulator_register(&pdev->dev, &regl->desc,
  						     &config);
  		if (IS_ERR(regl->rdev)) {
  			dev_err(&pdev->dev,
  				"Failed to register %s regulator
  ",
  				regl->desc.name);
  			return PTR_ERR(regl->rdev);
  		}

  	}
  
  	/* LDOs overcurrent event support */
  	irq = platform_get_irq_byname(pdev, "LDO_LIM");

  	if (irq < 0)

  		return irq;

  	regulators->irq_ldo_lim = irq;
  
  	ret = devm_request_threaded_irq(&pdev->dev, irq,
  					NULL, da9062_ldo_lim_event,
  					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
  					"LDO_LIM", regulators);
  	if (ret) {
  		dev_warn(&pdev->dev,
  			 "Failed to request LDO_LIM IRQ.
  ");
  		regulators->irq_ldo_lim = -ENXIO;
  	}
  
  	return 0;
  }
  
  static struct platform_driver da9062_regulator_driver = {
  	.driver = {
  		.name = "da9062-regulators",

  	},
  	.probe = da9062_regulator_probe,
  };
  
  static int __init da9062_regulator_init(void)
  {
  	return platform_driver_register(&da9062_regulator_driver);
  }
  subsys_initcall(da9062_regulator_init);
  
  static void __exit da9062_regulator_cleanup(void)
  {
  	platform_driver_unregister(&da9062_regulator_driver);
  }
  module_exit(da9062_regulator_cleanup);
  
  /* Module information */
  MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");

  MODULE_DESCRIPTION("REGULATOR device driver for Dialog DA9062 and DA9061");

  MODULE_LICENSE("GPL");

  MODULE_ALIAS("platform:da9062-regulators");