Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 791 insertions, 0 deletions

diff --git a/drivers/regulator/twl6030-regulator.c b/drivers/regulator/twl6030-regulator.c
new file mode 100644
index 000000000..219cbd910
--- /dev/null
+++ b/drivers/regulator/twl6030-regulator.c
@@ -0,0 +1,791 @@
+/*
+ * 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;
+
+	/* chip constraints on regulator behavior */
+	u16			min_mV;
+
+	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 struct regulator_ops twl6030coresmps_ops = {
+	.set_voltage	= twl6030coresmps_set_voltage,
+	.get_voltage	= twl6030coresmps_get_voltage,
+};
+
+static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
+{
+	struct twlreg_info *info = rdev_get_drvdata(rdev);
+
+	switch (sel) {
+	case 0:
+		return 0;
+	case 1 ... 24:
+		/* Linear mapping from 00000001 to 00011000:
+		 * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
+		 */
+		return (info->min_mV + 100 * (sel - 1)) * 1000;
+	case 25 ... 30:
+		return -EINVAL;
+	case 31:
+		return 2750000;
+	default:
+		return -EINVAL;
+	}
+}
+
+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 struct regulator_ops twl6030ldo_ops = {
+	.list_voltage	= twl6030ldo_list_voltage,
+
+	.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 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 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,
+};
+
+/*----------------------------------------------------------------------*/
+
+#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, min_mVolts) \
+static const struct twlreg_info TWL6030_INFO_##label = { \
+	.base = offset, \
+	.min_mV = min_mVolts, \
+	.desc = { \
+		.name = #label, \
+		.id = TWL6030_REG_##label, \
+		.n_voltages = 32, \
+		.ops = &twl6030ldo_ops, \
+		.type = REGULATOR_VOLTAGE, \
+		.owner = THIS_MODULE, \
+		}, \
+	}
+
+#define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts) \
+static const struct twlreg_info TWL6032_INFO_##label = { \
+	.base = offset, \
+	.min_mV = min_mVolts, \
+	.desc = { \
+		.name = #label, \
+		.id = TWL6032_REG_##label, \
+		.n_voltages = 32, \
+		.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, \
+	.min_mV = mVolts, \
+	.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, \
+	.min_mV = 600, \
+	.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, 1000);
+TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000);
+TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000);
+TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000);
+TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000);
+TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000);
+/* 6025 are renamed compared to 6030 versions */
+TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000);
+TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000);
+TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000);
+TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000);
+TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000);
+TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000);
+TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000);
+TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000);
+TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000);
+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;
+	const struct of_device_id	*match;
+	struct regulator_config		config = { };
+
+	match = of_match_device(twl_of_match, &pdev->dev);
+	if (!match)
+		return -ENODEV;
+
+	template = match->data;
+	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");