drivers/regulator/twl6030-regulator.c - linux - Git at Google

 /*
  * Split TWL6030 logic from twl-regulator.c:
  * Copyright (C) 2008 David Brownell
  *
  * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */

 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/mfd/twl.h>
 #include <linux/delay.h>

 struct twlreg_info {
 	/* start of regulator's PM_RECEIVER control register bank */
 	u8			base;

 	/* twl resource ID, for resource control state machine */
 	u8			id;

 	u8			flags;

 	/* used by regulator core */
 	struct regulator_desc	desc;

 	/* chip specific features */
 	unsigned long		features;

 	/* data passed from board for external get/set voltage */
 	void			*data;
 };


 /* LDO control registers ... offset is from the base of its register bank.
  * The first three registers of all power resource banks help hardware to
  * manage the various resource groups.
  */
 /* Common offset in TWL4030/6030 */
 #define VREG_GRP		0
 /* TWL6030 register offsets */
 #define VREG_TRANS		1
 #define VREG_STATE		2
 #define VREG_VOLTAGE		3
 #define VREG_VOLTAGE_SMPS	4
 /* TWL6030 Misc register offsets */
 #define VREG_BC_ALL		1
 #define VREG_BC_REF		2
 #define VREG_BC_PROC		3
 #define VREG_BC_CLK_RST		4

 /* TWL6030 LDO register values for CFG_STATE */
 #define TWL6030_CFG_STATE_OFF	0x00
 #define TWL6030_CFG_STATE_ON	0x01
 #define TWL6030_CFG_STATE_OFF2	0x02
 #define TWL6030_CFG_STATE_SLEEP	0x03
 #define TWL6030_CFG_STATE_GRP_SHIFT	5
 #define TWL6030_CFG_STATE_APP_SHIFT	2
 #define TWL6030_CFG_STATE_APP_MASK	(0x03 << TWL6030_CFG_STATE_APP_SHIFT)
 #define TWL6030_CFG_STATE_APP(v)	(((v) & TWL6030_CFG_STATE_APP_MASK) >>\
 						TWL6030_CFG_STATE_APP_SHIFT)

 /* Flags for SMPS Voltage reading */
 #define SMPS_OFFSET_EN		BIT(0)
 #define SMPS_EXTENDED_EN	BIT(1)

 /* twl6032 SMPS EPROM values */
 #define TWL6030_SMPS_OFFSET		0xB0
 #define TWL6030_SMPS_MULT		0xB3
 #define SMPS_MULTOFFSET_SMPS4	BIT(0)
 #define SMPS_MULTOFFSET_VIO	BIT(1)
 #define SMPS_MULTOFFSET_SMPS3	BIT(6)

 static inline int
 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
 {
 	u8 value;
 	int status;

 	status = twl_i2c_read_u8(slave_subgp,
 			&value, info->base + offset);
 	return (status < 0) ? status : value;
 }

 static inline int
 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 						 u8 value)
 {
 	return twl_i2c_write_u8(slave_subgp,
 			value, info->base + offset);
 }

 /* generic power resource operations, which work on all regulators */
 static int twlreg_grp(struct regulator_dev *rdev)
 {
 	return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 								 VREG_GRP);
 }

 /*
  * Enable/disable regulators by joining/leaving the P1 (processor) group.
  * We assume nobody else is updating the DEV_GRP registers.
  */
 /* definition for 6030 family */
 #define P3_GRP_6030	BIT(2)		/* secondary processor, modem, etc */
 #define P2_GRP_6030	BIT(1)		/* "peripherals" */
 #define P1_GRP_6030	BIT(0)		/* CPU/Linux */

 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int			grp = 0, val;

 	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 		grp = twlreg_grp(rdev);
 		if (grp < 0)
 			return grp;
 		grp &= P1_GRP_6030;
 	} else {
 		grp = 1;
 	}

 	val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 	val = TWL6030_CFG_STATE_APP(val);

 	return grp && (val == TWL6030_CFG_STATE_ON);
 }

 #define PB_I2C_BUSY	BIT(0)
 #define PB_I2C_BWEN	BIT(1)


 static int twl6030reg_enable(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int			grp = 0;
 	int			ret;

 	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 		grp = twlreg_grp(rdev);
 	if (grp < 0)
 		return grp;

 	ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 			grp << TWL6030_CFG_STATE_GRP_SHIFT |
 			TWL6030_CFG_STATE_ON);
 	return ret;
 }

 static int twl6030reg_disable(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int			grp = 0;
 	int			ret;

 	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 		grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;

 	/* For 6030, set the off state for all grps enabled */
 	ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 			(grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 			TWL6030_CFG_STATE_OFF);

 	return ret;
 }

 static int twl6030reg_get_status(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int			val;

 	val = twlreg_grp(rdev);
 	if (val < 0)
 		return val;

 	val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);

 	switch (TWL6030_CFG_STATE_APP(val)) {
 	case TWL6030_CFG_STATE_ON:
 		return REGULATOR_STATUS_NORMAL;

 	case TWL6030_CFG_STATE_SLEEP:
 		return REGULATOR_STATUS_STANDBY;

 	case TWL6030_CFG_STATE_OFF:
 	case TWL6030_CFG_STATE_OFF2:
 	default:
 		break;
 	}

 	return REGULATOR_STATUS_OFF;
 }

 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int grp = 0;
 	int val;

 	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 		grp = twlreg_grp(rdev);

 	if (grp < 0)
 		return grp;

 	/* Compose the state register settings */
 	val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 	/* We can only set the mode through state machine commands... */
 	switch (mode) {
 	case REGULATOR_MODE_NORMAL:
 		val |= TWL6030_CFG_STATE_ON;
 		break;
 	case REGULATOR_MODE_STANDBY:
 		val |= TWL6030_CFG_STATE_SLEEP;
 		break;

 	default:
 		return -EINVAL;
 	}

 	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 }

 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 	int max_uV, unsigned *selector)
 {
 	return -ENODEV;
 }

 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 {
 	return -ENODEV;
 }

 static const struct regulator_ops twl6030coresmps_ops = {
 	.set_voltage	= twl6030coresmps_set_voltage,
 	.get_voltage	= twl6030coresmps_get_voltage,
 };

 static int
 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);

 	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 			    selector);
 }

 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);
 	int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);

 	return vsel;
 }

 static const struct regulator_ops twl6030ldo_ops = {
 	.list_voltage	= regulator_list_voltage_linear_range,

 	.set_voltage_sel = twl6030ldo_set_voltage_sel,
 	.get_voltage_sel = twl6030ldo_get_voltage_sel,

 	.enable		= twl6030reg_enable,
 	.disable	= twl6030reg_disable,
 	.is_enabled	= twl6030reg_is_enabled,

 	.set_mode	= twl6030reg_set_mode,

 	.get_status	= twl6030reg_get_status,
 };

 static const struct regulator_ops twl6030fixed_ops = {
 	.list_voltage	= regulator_list_voltage_linear,

 	.enable		= twl6030reg_enable,
 	.disable	= twl6030reg_disable,
 	.is_enabled	= twl6030reg_is_enabled,

 	.set_mode	= twl6030reg_set_mode,

 	.get_status	= twl6030reg_get_status,
 };

 /*
  * SMPS status and control
  */

 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);

 	int voltage = 0;

 	switch (info->flags) {
 	case SMPS_OFFSET_EN:
 		voltage = 100000;
 		/* fall through */
 	case 0:
 		switch (index) {
 		case 0:
 			voltage = 0;
 			break;
 		case 58:
 			voltage = 1350 * 1000;
 			break;
 		case 59:
 			voltage = 1500 * 1000;
 			break;
 		case 60:
 			voltage = 1800 * 1000;
 			break;
 		case 61:
 			voltage = 1900 * 1000;
 			break;
 		case 62:
 			voltage = 2100 * 1000;
 			break;
 		default:
 			voltage += (600000 + (12500 * (index - 1)));
 		}
 		break;
 	case SMPS_EXTENDED_EN:
 		switch (index) {
 		case 0:
 			voltage = 0;
 			break;
 		case 58:
 			voltage = 2084 * 1000;
 			break;
 		case 59:
 			voltage = 2315 * 1000;
 			break;
 		case 60:
 			voltage = 2778 * 1000;
 			break;
 		case 61:
 			voltage = 2932 * 1000;
 			break;
 		case 62:
 			voltage = 3241 * 1000;
 			break;
 		default:
 			voltage = (1852000 + (38600 * (index - 1)));
 		}
 		break;
 	case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 		switch (index) {
 		case 0:
 			voltage = 0;
 			break;
 		case 58:
 			voltage = 4167 * 1000;
 			break;
 		case 59:
 			voltage = 2315 * 1000;
 			break;
 		case 60:
 			voltage = 2778 * 1000;
 			break;
 		case 61:
 			voltage = 2932 * 1000;
 			break;
 		case 62:
 			voltage = 3241 * 1000;
 			break;
 		default:
 			voltage = (2161000 + (38600 * (index - 1)));
 		}
 		break;
 	}

 	return voltage;
 }

 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 				   int max_uV)
 {
 	struct twlreg_info *info = rdev_get_drvdata(rdev);
 	int vsel = 0;

 	switch (info->flags) {
 	case 0:
 		if (min_uV == 0)
 			vsel = 0;
 		else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 			vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 			vsel++;
 		}
 		/* Values 1..57 for vsel are linear and can be calculated
 		 * values 58..62 are non linear.
 		 */
 		else if ((min_uV > 1900000) && (min_uV <= 2100000))
 			vsel = 62;
 		else if ((min_uV > 1800000) && (min_uV <= 1900000))
 			vsel = 61;
 		else if ((min_uV > 1500000) && (min_uV <= 1800000))
 			vsel = 60;
 		else if ((min_uV > 1350000) && (min_uV <= 1500000))
 			vsel = 59;
 		else if ((min_uV > 1300000) && (min_uV <= 1350000))
 			vsel = 58;
 		else
 			return -EINVAL;
 		break;
 	case SMPS_OFFSET_EN:
 		if (min_uV == 0)
 			vsel = 0;
 		else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 			vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 			vsel++;
 		}
 		/* Values 1..57 for vsel are linear and can be calculated
 		 * values 58..62 are non linear.
 		 */
 		else if ((min_uV > 1900000) && (min_uV <= 2100000))
 			vsel = 62;
 		else if ((min_uV > 1800000) && (min_uV <= 1900000))
 			vsel = 61;
 		else if ((min_uV > 1500000) && (min_uV <= 1800000))
 			vsel = 60;
 		else if ((min_uV > 1350000) && (min_uV <= 1500000))
 			vsel = 59;
 		else
 			return -EINVAL;
 		break;
 	case SMPS_EXTENDED_EN:
 		if (min_uV == 0) {
 			vsel = 0;
 		} else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 			vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 			vsel++;
 		}
 		break;
 	case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 		if (min_uV == 0) {
 			vsel = 0;
 		} else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 			vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 			vsel++;
 		}
 		break;
 	}

 	return vsel;
 }

 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 				       unsigned int selector)
 {
 	struct twlreg_info *info = rdev_get_drvdata(rdev);

 	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 			    selector);
 }

 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 {
 	struct twlreg_info	*info = rdev_get_drvdata(rdev);

 	return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 }

 static const struct regulator_ops twlsmps_ops = {
 	.list_voltage		= twl6030smps_list_voltage,
 	.map_voltage		= twl6030smps_map_voltage,

 	.set_voltage_sel	= twl6030smps_set_voltage_sel,
 	.get_voltage_sel	= twl6030smps_get_voltage_sel,

 	.enable			= twl6030reg_enable,
 	.disable		= twl6030reg_disable,
 	.is_enabled		= twl6030reg_is_enabled,

 	.set_mode		= twl6030reg_set_mode,

 	.get_status		= twl6030reg_get_status,
 };

 /*----------------------------------------------------------------------*/
 static const struct regulator_linear_range twl6030ldo_linear_range[] = {
 	REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
 	REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
 	REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
 };

 #define TWL6030_ADJUSTABLE_SMPS(label) \
 static const struct twlreg_info TWL6030_INFO_##label = { \
 	.desc = { \
 		.name = #label, \
 		.id = TWL6030_REG_##label, \
 		.ops = &twl6030coresmps_ops, \
 		.type = REGULATOR_VOLTAGE, \
 		.owner = THIS_MODULE, \
 		}, \
 	}

 #define TWL6030_ADJUSTABLE_LDO(label, offset) \
 static const struct twlreg_info TWL6030_INFO_##label = { \
 	.base = offset, \
 	.desc = { \
 		.name = #label, \
 		.id = TWL6030_REG_##label, \
 		.n_voltages = 32, \
 		.linear_ranges = twl6030ldo_linear_range, \
 		.n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 		.ops = &twl6030ldo_ops, \
 		.type = REGULATOR_VOLTAGE, \
 		.owner = THIS_MODULE, \
 		}, \
 	}

 #define TWL6032_ADJUSTABLE_LDO(label, offset) \
 static const struct twlreg_info TWL6032_INFO_##label = { \
 	.base = offset, \
 	.desc = { \
 		.name = #label, \
 		.id = TWL6032_REG_##label, \
 		.n_voltages = 32, \
 		.linear_ranges = twl6030ldo_linear_range, \
 		.n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 		.ops = &twl6030ldo_ops, \
 		.type = REGULATOR_VOLTAGE, \
 		.owner = THIS_MODULE, \
 		}, \
 	}

 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 	.base = offset, \
 	.id = 0, \
 	.desc = { \
 		.name = #label, \
 		.id = TWL6030##_REG_##label, \
 		.n_voltages = 1, \
 		.ops = &twl6030fixed_ops, \
 		.type = REGULATOR_VOLTAGE, \
 		.owner = THIS_MODULE, \
 		.min_uV = mVolts * 1000, \
 		.enable_time = turnon_delay, \
 		.of_map_mode = NULL, \
 		}, \
 	}

 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 	.base = offset, \
 	.desc = { \
 		.name = #label, \
 		.id = TWL6032_REG_##label, \
 		.n_voltages = 63, \
 		.ops = &twlsmps_ops, \
 		.type = REGULATOR_VOLTAGE, \
 		.owner = THIS_MODULE, \
 		}, \
 	}

 /* VUSBCP is managed *only* by the USB subchip */
 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 /* Turnon-delay and remap configuration values for 6030 are not
    verified since the specification is not public */
 TWL6030_ADJUSTABLE_SMPS(VDD1);
 TWL6030_ADJUSTABLE_SMPS(VDD2);
 TWL6030_ADJUSTABLE_SMPS(VDD3);
 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
 /* 6025 are renamed compared to 6030 versions */
 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);

 static u8 twl_get_smps_offset(void)
 {
 	u8 value;

 	twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 			TWL6030_SMPS_OFFSET);
 	return value;
 }

 static u8 twl_get_smps_mult(void)
 {
 	u8 value;

 	twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 			TWL6030_SMPS_MULT);
 	return value;
 }

 #define TWL_OF_MATCH(comp, family, label) \
 	{ \
 		.compatible = comp, \
 		.data = &family##_INFO_##label, \
 	}

 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)

 static const struct of_device_id twl_of_match[] = {
 	TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
 	TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
 	TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
 	TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
 	TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
 	TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
 	TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
 	TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
 	TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
 	TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
 	TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
 	TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
 	TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
 	TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
 	TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
 	TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
 	TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
 	TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
 	TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
 	TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
 	TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
 	TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
 	TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
 	TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
 	TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
 	TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
 	TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
 	{},
 };
 MODULE_DEVICE_TABLE(of, twl_of_match);

 static int twlreg_probe(struct platform_device *pdev)
 {
 	int id;
 	struct twlreg_info		*info;
 	const struct twlreg_info	*template;
 	struct regulator_init_data	*initdata;
 	struct regulation_constraints	*c;
 	struct regulator_dev		*rdev;
 	struct regulator_config		config = { };

 	template = of_device_get_match_data(&pdev->dev);
 	if (!template)
 		return -ENODEV;

 	id = template->desc.id;
 	initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
 						&template->desc);
 	if (!initdata)
 		return -EINVAL;

 	info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;

 	/* Constrain board-specific capabilities according to what
 	 * this driver and the chip itself can actually do.
 	 */
 	c = &initdata->constraints;
 	c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
 	c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
 				| REGULATOR_CHANGE_MODE
 				| REGULATOR_CHANGE_STATUS;

 	switch (id) {
 	case TWL6032_REG_SMPS3:
 		if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
 			info->flags |= SMPS_EXTENDED_EN;
 		if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
 			info->flags |= SMPS_OFFSET_EN;
 		break;
 	case TWL6032_REG_SMPS4:
 		if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
 			info->flags |= SMPS_EXTENDED_EN;
 		if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
 			info->flags |= SMPS_OFFSET_EN;
 		break;
 	case TWL6032_REG_VIO:
 		if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
 			info->flags |= SMPS_EXTENDED_EN;
 		if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
 			info->flags |= SMPS_OFFSET_EN;
 		break;
 	}

 	config.dev = &pdev->dev;
 	config.init_data = initdata;
 	config.driver_data = info;
 	config.of_node = pdev->dev.of_node;

 	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
 	if (IS_ERR(rdev)) {
 		dev_err(&pdev->dev, "can't register %s, %ld\n",
 				info->desc.name, PTR_ERR(rdev));
 		return PTR_ERR(rdev);
 	}
 	platform_set_drvdata(pdev, rdev);

 	/* NOTE:  many regulators support short-circuit IRQs (presentable
 	 * as REGULATOR_OVER_CURRENT notifications?) configured via:
 	 *  - SC_CONFIG
 	 *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
 	 *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
 	 *  - IT_CONFIG
 	 */

 	return 0;
 }

 MODULE_ALIAS("platform:twl6030_reg");

 static struct platform_driver twlreg_driver = {
 	.probe		= twlreg_probe,
 	/* NOTE: short name, to work around driver model truncation of
 	 * "twl_regulator.12" (and friends) to "twl_regulator.1".
 	 */
 	.driver  = {
 		.name  = "twl6030_reg",
 		.of_match_table = of_match_ptr(twl_of_match),
 	},
 };

 static int __init twlreg_init(void)
 {
 	return platform_driver_register(&twlreg_driver);
 }
 subsys_initcall(twlreg_init);

 static void __exit twlreg_exit(void)
 {
 	platform_driver_unregister(&twlreg_driver);
 }
 module_exit(twlreg_exit)

 MODULE_DESCRIPTION("TWL6030 regulator driver");
 MODULE_LICENSE("GPL");
	/*
	* Split TWL6030 logic from twl-regulator.c:
	* Copyright (C) 2008 David Brownell
	*
	* Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*/

	#include <linux/module.h>
	#include <linux/string.h>
	#include <linux/slab.h>
	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/platform_device.h>
	#include <linux/of.h>
	#include <linux/of_device.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/regulator/of_regulator.h>
	#include <linux/mfd/twl.h>
	#include <linux/delay.h>

	struct twlreg_info {
	/* start of regulator's PM_RECEIVER control register bank */
	u8 base;

	/* twl resource ID, for resource control state machine */
	u8 id;

	u8 flags;

	/* used by regulator core */
	struct regulator_desc desc;

	/* chip specific features */
	unsigned long features;

	/* data passed from board for external get/set voltage */
	void *data;
	};


	/* LDO control registers ... offset is from the base of its register bank.
	* The first three registers of all power resource banks help hardware to
	* manage the various resource groups.
	*/
	/* Common offset in TWL4030/6030 */
	#define VREG_GRP 0
	/* TWL6030 register offsets */
	#define VREG_TRANS 1
	#define VREG_STATE 2
	#define VREG_VOLTAGE 3
	#define VREG_VOLTAGE_SMPS 4
	/* TWL6030 Misc register offsets */
	#define VREG_BC_ALL 1
	#define VREG_BC_REF 2
	#define VREG_BC_PROC 3
	#define VREG_BC_CLK_RST 4

	/* TWL6030 LDO register values for CFG_STATE */
	#define TWL6030_CFG_STATE_OFF 0x00
	#define TWL6030_CFG_STATE_ON 0x01
	#define TWL6030_CFG_STATE_OFF2 0x02
	#define TWL6030_CFG_STATE_SLEEP 0x03
	#define TWL6030_CFG_STATE_GRP_SHIFT 5
	#define TWL6030_CFG_STATE_APP_SHIFT 2
	#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
	#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
	TWL6030_CFG_STATE_APP_SHIFT)

	/* Flags for SMPS Voltage reading */
	#define SMPS_OFFSET_EN BIT(0)
	#define SMPS_EXTENDED_EN BIT(1)

	/* twl6032 SMPS EPROM values */
	#define TWL6030_SMPS_OFFSET 0xB0
	#define TWL6030_SMPS_MULT 0xB3
	#define SMPS_MULTOFFSET_SMPS4 BIT(0)
	#define SMPS_MULTOFFSET_VIO BIT(1)
	#define SMPS_MULTOFFSET_SMPS3 BIT(6)

	static inline int
	twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
	{
	u8 value;
	int status;

	status = twl_i2c_read_u8(slave_subgp,
	&value, info->base + offset);
	return (status < 0) ? status : value;
	}

	static inline int
	twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
	u8 value)
	{
	return twl_i2c_write_u8(slave_subgp,
	value, info->base + offset);
	}

	/* generic power resource operations, which work on all regulators */
	static int twlreg_grp(struct regulator_dev *rdev)
	{
	return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
	VREG_GRP);
	}

	/*
	* Enable/disable regulators by joining/leaving the P1 (processor) group.
	* We assume nobody else is updating the DEV_GRP registers.
	*/
	/* definition for 6030 family */
	#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
	#define P2_GRP_6030 BIT(1) /* "peripherals" */
	#define P1_GRP_6030 BIT(0) /* CPU/Linux */

	static int twl6030reg_is_enabled(struct regulator_dev *rdev)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int grp = 0, val;

	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
	grp = twlreg_grp(rdev);
	if (grp < 0)
	return grp;
	grp &= P1_GRP_6030;
	} else {
	grp = 1;
	}

	val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
	val = TWL6030_CFG_STATE_APP(val);

	return grp && (val == TWL6030_CFG_STATE_ON);
	}

	#define PB_I2C_BUSY BIT(0)
	#define PB_I2C_BWEN BIT(1)


	static int twl6030reg_enable(struct regulator_dev *rdev)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int grp = 0;
	int ret;

	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
	grp = twlreg_grp(rdev);
	if (grp < 0)
	return grp;

	ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
	grp << TWL6030_CFG_STATE_GRP_SHIFT \|
	TWL6030_CFG_STATE_ON);
	return ret;
	}

	static int twl6030reg_disable(struct regulator_dev *rdev)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int grp = 0;
	int ret;

	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
	grp = P1_GRP_6030 \| P2_GRP_6030 \| P3_GRP_6030;

	/* For 6030, set the off state for all grps enabled */
	ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
	(grp) << TWL6030_CFG_STATE_GRP_SHIFT \|
	TWL6030_CFG_STATE_OFF);

	return ret;
	}

	static int twl6030reg_get_status(struct regulator_dev *rdev)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int val;

	val = twlreg_grp(rdev);
	if (val < 0)
	return val;

	val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);

	switch (TWL6030_CFG_STATE_APP(val)) {
	case TWL6030_CFG_STATE_ON:
	return REGULATOR_STATUS_NORMAL;

	case TWL6030_CFG_STATE_SLEEP:
	return REGULATOR_STATUS_STANDBY;

	case TWL6030_CFG_STATE_OFF:
	case TWL6030_CFG_STATE_OFF2:
	default:
	break;
	}

	return REGULATOR_STATUS_OFF;
	}

	static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int grp = 0;
	int val;

	if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
	grp = twlreg_grp(rdev);

	if (grp < 0)
	return grp;

	/* Compose the state register settings */
	val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
	/* We can only set the mode through state machine commands... */
	switch (mode) {
	case REGULATOR_MODE_NORMAL:
	val \|= TWL6030_CFG_STATE_ON;
	break;
	case REGULATOR_MODE_STANDBY:
	val \|= TWL6030_CFG_STATE_SLEEP;
	break;

	default:
	return -EINVAL;
	}

	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
	}

	static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
	int max_uV, unsigned *selector)
	{
	return -ENODEV;
	}

	static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
	{
	return -ENODEV;
	}

	static const struct regulator_ops twl6030coresmps_ops = {
	.set_voltage = twl6030coresmps_set_voltage,
	.get_voltage = twl6030coresmps_get_voltage,
	};

	static int
	twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);

	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
	selector);
	}

	static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);

	return vsel;
	}

	static const struct regulator_ops twl6030ldo_ops = {
	.list_voltage = regulator_list_voltage_linear_range,

	.set_voltage_sel = twl6030ldo_set_voltage_sel,
	.get_voltage_sel = twl6030ldo_get_voltage_sel,

	.enable = twl6030reg_enable,
	.disable = twl6030reg_disable,
	.is_enabled = twl6030reg_is_enabled,

	.set_mode = twl6030reg_set_mode,

	.get_status = twl6030reg_get_status,
	};

	static const struct regulator_ops twl6030fixed_ops = {
	.list_voltage = regulator_list_voltage_linear,

	.enable = twl6030reg_enable,
	.disable = twl6030reg_disable,
	.is_enabled = twl6030reg_is_enabled,

	.set_mode = twl6030reg_set_mode,

	.get_status = twl6030reg_get_status,
	};

	/*
	* SMPS status and control
	*/

	static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);

	int voltage = 0;

	switch (info->flags) {
	case SMPS_OFFSET_EN:
	voltage = 100000;
	/* fall through */
	case 0:
	switch (index) {
	case 0:
	voltage = 0;
	break;
	case 58:
	voltage = 1350 * 1000;
	break;
	case 59:
	voltage = 1500 * 1000;
	break;
	case 60:
	voltage = 1800 * 1000;
	break;
	case 61:
	voltage = 1900 * 1000;
	break;
	case 62:
	voltage = 2100 * 1000;
	break;
	default:
	voltage += (600000 + (12500 * (index - 1)));
	}
	break;
	case SMPS_EXTENDED_EN:
	switch (index) {
	case 0:
	voltage = 0;
	break;
	case 58:
	voltage = 2084 * 1000;
	break;
	case 59:
	voltage = 2315 * 1000;
	break;
	case 60:
	voltage = 2778 * 1000;
	break;
	case 61:
	voltage = 2932 * 1000;
	break;
	case 62:
	voltage = 3241 * 1000;
	break;
	default:
	voltage = (1852000 + (38600 * (index - 1)));
	}
	break;
	case SMPS_OFFSET_EN \| SMPS_EXTENDED_EN:
	switch (index) {
	case 0:
	voltage = 0;
	break;
	case 58:
	voltage = 4167 * 1000;
	break;
	case 59:
	voltage = 2315 * 1000;
	break;
	case 60:
	voltage = 2778 * 1000;
	break;
	case 61:
	voltage = 2932 * 1000;
	break;
	case 62:
	voltage = 3241 * 1000;
	break;
	default:
	voltage = (2161000 + (38600 * (index - 1)));
	}
	break;
	}

	return voltage;
	}

	static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
	int max_uV)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);
	int vsel = 0;

	switch (info->flags) {
	case 0:
	if (min_uV == 0)
	vsel = 0;
	else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
	vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
	vsel++;
	}
	/* Values 1..57 for vsel are linear and can be calculated
	* values 58..62 are non linear.
	*/
	else if ((min_uV > 1900000) && (min_uV <= 2100000))
	vsel = 62;
	else if ((min_uV > 1800000) && (min_uV <= 1900000))
	vsel = 61;
	else if ((min_uV > 1500000) && (min_uV <= 1800000))
	vsel = 60;
	else if ((min_uV > 1350000) && (min_uV <= 1500000))
	vsel = 59;
	else if ((min_uV > 1300000) && (min_uV <= 1350000))
	vsel = 58;
	else
	return -EINVAL;
	break;
	case SMPS_OFFSET_EN:
	if (min_uV == 0)
	vsel = 0;
	else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
	vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
	vsel++;
	}
	/* Values 1..57 for vsel are linear and can be calculated
	* values 58..62 are non linear.
	*/
	else if ((min_uV > 1900000) && (min_uV <= 2100000))
	vsel = 62;
	else if ((min_uV > 1800000) && (min_uV <= 1900000))
	vsel = 61;
	else if ((min_uV > 1500000) && (min_uV <= 1800000))
	vsel = 60;
	else if ((min_uV > 1350000) && (min_uV <= 1500000))
	vsel = 59;
	else
	return -EINVAL;
	break;
	case SMPS_EXTENDED_EN:
	if (min_uV == 0) {
	vsel = 0;
	} else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
	vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
	vsel++;
	}
	break;
	case SMPS_OFFSET_EN\|SMPS_EXTENDED_EN:
	if (min_uV == 0) {
	vsel = 0;
	} else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
	vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
	vsel++;
	}
	break;
	}

	return vsel;
	}

	static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
	unsigned int selector)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);

	return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
	selector);
	}

	static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
	{
	struct twlreg_info *info = rdev_get_drvdata(rdev);

	return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
	}

	static const struct regulator_ops twlsmps_ops = {
	.list_voltage = twl6030smps_list_voltage,
	.map_voltage = twl6030smps_map_voltage,

	.set_voltage_sel = twl6030smps_set_voltage_sel,
	.get_voltage_sel = twl6030smps_get_voltage_sel,

	.enable = twl6030reg_enable,
	.disable = twl6030reg_disable,
	.is_enabled = twl6030reg_is_enabled,

	.set_mode = twl6030reg_set_mode,

	.get_status = twl6030reg_get_status,
	};

	/----------------------------------------------------------------------/
	static const struct regulator_linear_range twl6030ldo_linear_range[] = {
	REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
	REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
	REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
	};

	#define TWL6030_ADJUSTABLE_SMPS(label) \
	static const struct twlreg_info TWL6030_INFO_##label = { \
	.desc = { \
	.name = #label, \
	.id = TWL6030_REG_##label, \
	.ops = &twl6030coresmps_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	}, \
	}

	#define TWL6030_ADJUSTABLE_LDO(label, offset) \
	static const struct twlreg_info TWL6030_INFO_##label = { \
	.base = offset, \
	.desc = { \
	.name = #label, \
	.id = TWL6030_REG_##label, \
	.n_voltages = 32, \
	.linear_ranges = twl6030ldo_linear_range, \
	.n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
	.ops = &twl6030ldo_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	}, \
	}

	#define TWL6032_ADJUSTABLE_LDO(label, offset) \
	static const struct twlreg_info TWL6032_INFO_##label = { \
	.base = offset, \
	.desc = { \
	.name = #label, \
	.id = TWL6032_REG_##label, \
	.n_voltages = 32, \
	.linear_ranges = twl6030ldo_linear_range, \
	.n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
	.ops = &twl6030ldo_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	}, \
	}

	#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
	static const struct twlreg_info TWLFIXED_INFO_##label = { \
	.base = offset, \
	.id = 0, \
	.desc = { \
	.name = #label, \
	.id = TWL6030##_REG_##label, \
	.n_voltages = 1, \
	.ops = &twl6030fixed_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	.min_uV = mVolts * 1000, \
	.enable_time = turnon_delay, \
	.of_map_mode = NULL, \
	}, \
	}

	#define TWL6032_ADJUSTABLE_SMPS(label, offset) \
	static const struct twlreg_info TWLSMPS_INFO_##label = { \
	.base = offset, \
	.desc = { \
	.name = #label, \
	.id = TWL6032_REG_##label, \
	.n_voltages = 63, \
	.ops = &twlsmps_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	}, \
	}

	/* VUSBCP is managed only by the USB subchip */
	/* 6030 REG with base as PMC Slave Misc : 0x0030 */
	/* Turnon-delay and remap configuration values for 6030 are not
	verified since the specification is not public */
	TWL6030_ADJUSTABLE_SMPS(VDD1);
	TWL6030_ADJUSTABLE_SMPS(VDD2);
	TWL6030_ADJUSTABLE_SMPS(VDD3);
	TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
	TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
	TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
	TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
	TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
	TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
	/* 6025 are renamed compared to 6030 versions */
	TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
	TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
	TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
	TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
	TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
	TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
	TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
	TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
	TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
	TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
	TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
	TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
	TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
	TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
	TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
	TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
	TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
	TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);

	static u8 twl_get_smps_offset(void)
	{
	u8 value;

	twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
	TWL6030_SMPS_OFFSET);
	return value;
	}

	static u8 twl_get_smps_mult(void)
	{
	u8 value;

	twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
	TWL6030_SMPS_MULT);
	return value;
	}

	#define TWL_OF_MATCH(comp, family, label) \
	{ \
	.compatible = comp, \
	.data = &family##_INFO_##label, \
	}

	#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
	#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
	#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
	#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)

	static const struct of_device_id twl_of_match[] = {
	TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
	TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
	TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
	TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
	TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
	TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
	TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
	TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
	TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
	TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
	TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
	TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
	TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
	TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
	TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
	TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
	TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
	TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
	TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
	TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
	TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
	TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
	TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
	TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
	TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
	TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
	TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
	{},
	};
	MODULE_DEVICE_TABLE(of, twl_of_match);

	static int twlreg_probe(struct platform_device *pdev)
	{
	int id;
	struct twlreg_info *info;
	const struct twlreg_info *template;
	struct regulator_init_data *initdata;
	struct regulation_constraints *c;
	struct regulator_dev *rdev;
	struct regulator_config config = { };

	template = of_device_get_match_data(&pdev->dev);
	if (!template)
	return -ENODEV;

	id = template->desc.id;
	initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
	&template->desc);
	if (!initdata)
	return -EINVAL;

	info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
	if (!info)
	return -ENOMEM;

	/* Constrain board-specific capabilities according to what
	* this driver and the chip itself can actually do.
	*/
	c = &initdata->constraints;
	c->valid_modes_mask &= REGULATOR_MODE_NORMAL \| REGULATOR_MODE_STANDBY;
	c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
	\| REGULATOR_CHANGE_MODE
	\| REGULATOR_CHANGE_STATUS;

	switch (id) {
	case TWL6032_REG_SMPS3:
	if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
	info->flags \|= SMPS_EXTENDED_EN;
	if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
	info->flags \|= SMPS_OFFSET_EN;
	break;
	case TWL6032_REG_SMPS4:
	if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
	info->flags \|= SMPS_EXTENDED_EN;
	if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
	info->flags \|= SMPS_OFFSET_EN;
	break;
	case TWL6032_REG_VIO:
	if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
	info->flags \|= SMPS_EXTENDED_EN;
	if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
	info->flags \|= SMPS_OFFSET_EN;
	break;
	}

	config.dev = &pdev->dev;
	config.init_data = initdata;
	config.driver_data = info;
	config.of_node = pdev->dev.of_node;

	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
	if (IS_ERR(rdev)) {
	dev_err(&pdev->dev, "can't register %s, %ld\n",
	info->desc.name, PTR_ERR(rdev));
	return PTR_ERR(rdev);
	}
	platform_set_drvdata(pdev, rdev);

	/* NOTE: many regulators support short-circuit IRQs (presentable
	* as REGULATOR_OVER_CURRENT notifications?) configured via:
	* - SC_CONFIG
	* - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
	* - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
	* - IT_CONFIG
	*/

	return 0;
	}

	MODULE_ALIAS("platform:twl6030_reg");

	static struct platform_driver twlreg_driver = {
	.probe = twlreg_probe,
	/* NOTE: short name, to work around driver model truncation of
	* "twl_regulator.12" (and friends) to "twl_regulator.1".
	*/
	.driver = {
	.name = "twl6030_reg",
	.of_match_table = of_match_ptr(twl_of_match),
	},
	};

	static int __init twlreg_init(void)
	{
	return platform_driver_register(&twlreg_driver);
	}
	subsys_initcall(twlreg_init);

	static void __exit twlreg_exit(void)
	{
	platform_driver_unregister(&twlreg_driver);
	}
	module_exit(twlreg_exit)

	MODULE_DESCRIPTION("TWL6030 regulator driver");
	MODULE_LICENSE("GPL");