Merge tag 'regulator-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "A fairly quiet release for the regulator API, the bulk of the changes
  being lots of small cleanups and API updates contributed by Axel Lin
  with just a small set of larger changes:

   - New driver for LP8755

   - DT support for S5M8767, TPS51632, TPS6507x and TPS65090

   - Support for writing a "commit changes" bit in the regmap helper
     functions."

* tag 'regulator-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (60 commits)
  regulator: Fix memory garbage dev_err printout.
  regulator: max77686: Reuse rdev_get_id() function.
  regulator: tps51632: Use regulator_[get|set]_voltage_sel_regmap
  regulator: as3711: Fix checking if no platform initialization data
  regulator: s5m8767: Prevent possible NULL pointer dereference
  regulator: s5m8767: Fix dev argument for devm_kzalloc and of_get_regulator_init_data
  regulator: core: Optimize _regulator_do_set_voltage if voltage does not change
  regulator: max8998: Let regulator core handle the case selector == old_selector
  regulator: s5m8767: Use of_get_child_count()
  regulator: anatop: improve precision of delay time
  regulator: show state for GPIO-controlled regulators
  regulator: s5m8767: Fix build in non-DT case
  regulator: add device tree support for s5m8767
  regulator: palmas: Remove a redundant setting for warm_reset
  regulator: mc13xxx: Use of_get_child_count()
  regulator: max8997: Use of_get_child_count()
  regulator: tps65090: Fix using wrong dev argument for calling of_regulator_match
  regulators: anatop: add set_voltage_time_sel interface
  regulator: Add missing of_node_put()
  regulator: tps6507x: Fix using wrong dev argument for calling of_regulator_match
  ...

Documentation/devicetree/bindings/mfd/tps6507x.txt

+TPS6507x Power Management Integrated Circuit
+
+Required properties:
+- compatible: "ti,tps6507x"
+- reg: I2C slave address
+- regulators: This is the list of child nodes that specify the regulator
+  initialization data for defined regulators. Not all regulators for the
+  given device need to be present. The definition for each of these nodes
+  is defined using the standard binding for regulators found at
+  Documentation/devicetree/bindings/regulator/regulator.txt.
+  The regulator is matched with the regulator-compatible.
+
+  The valid regulator-compatible values are:
+  tps6507x: vdcdc1, vdcdc2, vdcdc3, vldo1, vldo2
+- xxx-supply: Input voltage supply regulator.
+  These entries are required if regulators are enabled for a device.
+  Missing of these properties can cause the regulator registration
+  fails.
+  If some of input supply is powered through battery or always-on
+  supply then also it is require to have these parameters with proper
+  node handle of always on power supply.
+  tps6507x:
+       vindcdc1_2-supply: VDCDC1 and VDCDC2 input.
+       vindcdc3-supply  : VDCDC3 input.
+       vldo1_2-supply   : VLDO1 and VLDO2 input.
+
+Regulator Optional properties:
+- defdcdc_default: It's property of DCDC2 and DCDC3 regulators.
+			0: If defdcdc pin of DCDC2/DCDC3 is pulled to GND.
+			1: If defdcdc pin of DCDC2/DCDC3 is driven HIGH.
+  If this property is not defined, it defaults to 0 (not enabled).
+
+Example:
+
+	pmu: tps6507x@48 {
+		compatible = "ti,tps6507x";
+		reg = <0x48>;
+
+		vindcdc1_2-supply = <&vbat>;
+		vindcdc3-supply = <...>;
+		vinldo1_2-supply = <...>;
+
+		regulators {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			vdcdc1_reg: regulator@0 {
+				regulator-compatible = "VDCDC1";
+				reg = <0>;
+				regulator-min-microvolt = <3150000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+			vdcdc2_reg: regulator@1 {
+				regulator-compatible = "VDCDC2";
+				reg = <1>;
+				regulator-min-microvolt = <1710000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-always-on;
+				regulator-boot-on;
+				defdcdc_default = <1>;
+			};
+			vdcdc3_reg: regulator@2 {
+				regulator-compatible = "VDCDC3";
+				reg = <2>;
+				regulator-min-microvolt = <950000>
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+				regulator-boot-on;
+				defdcdc_default = <1>;
+			};
+			ldo1_reg: regulator@3 {
+				regulator-compatible = "LDO1";
+				reg = <3>;
+				regulator-min-microvolt = <1710000>;
+				regulator-max-microvolt = <1890000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+			ldo2_reg: regulator@4 {
+				regulator-compatible = "LDO2";
+				reg = <4>;
+				regulator-min-microvolt = <1140000>;
+				regulator-max-microvolt = <1320000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+		};
+
+	};

Documentation/devicetree/bindings/regulator/anatop-regulator.txt

@@ -9,6 +9,11 @@ Required properties:
 - anatop-min-voltage: Minimum voltage of this regulator
 - anatop-max-voltage: Maximum voltage of this regulator
 
+Optional properties:
+- anatop-delay-reg-offset: Anatop MFD step time register offset
+- anatop-delay-bit-shift: Bit shift for the step time register
+- anatop-delay-bit-width: Number of bits used in the step time register
+
 Any property defined as part of the core regulator
 binding, defined in regulator.txt, can also be used.
 
@@ -23,6 +28,9 @@ Example:
 		anatop-reg-offset = <0x140>;
 		anatop-vol-bit-shift = <9>;
 		anatop-vol-bit-width = <5>;
+		anatop-delay-reg-offset = <0x170>;
+		anatop-delay-bit-shift = <24>;
+		anatop-delay-bit-width = <2>;
 		anatop-min-bit-val = <1>;
 		anatop-min-voltage = <725000>;
 		anatop-max-voltage = <1300000>;

Documentation/devicetree/bindings/regulator/s5m8767-regulator.txt

+* Samsung S5M8767 Voltage and Current Regulator
+
+The Samsung S5M8767 is a multi-function device which includes volatage and
+current regulators, rtc, charger controller and other sub-blocks. It is
+interfaced to the host controller using a i2c interface. Each sub-block is
+addressed by the host system using different i2c slave address. This document
+describes the bindings for 'pmic' sub-block of s5m8767.
+
+Required properties:
+- compatible: Should be "samsung,s5m8767-pmic".
+- reg: Specifies the i2c slave address of the pmic block. It should be 0x66.
+
+- s5m8767,pmic-buck2-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
+  units for buck2 when changing voltage using gpio dvs. Refer to [1] below
+  for additional information.
+
+- s5m8767,pmic-buck3-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
+  units for buck3 when changing voltage using gpio dvs. Refer to [1] below
+  for additional information.
+
+- s5m8767,pmic-buck4-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
+  units for buck4 when changing voltage using gpio dvs. Refer to [1] below
+  for additional information.
+
+- s5m8767,pmic-buck-ds-gpios: GPIO specifiers for three host gpio's used
+  for selecting GPIO DVS lines. It is one-to-one mapped to dvs gpio lines.
+
+[1] If none of the 's5m8767,pmic-buck[2/3/4]-uses-gpio-dvs' optional
+    property is specified, the 's5m8767,pmic-buck[2/3/4]-dvs-voltage'
+    property should specify atleast one voltage level (which would be a
+    safe operating voltage).
+
+    If either of the 's5m8767,pmic-buck[2/3/4]-uses-gpio-dvs' optional
+    property is specified, then all the eight voltage values for the
+    's5m8767,pmic-buck[2/3/4]-dvs-voltage' should be specified.
+
+Optional properties:
+- interrupt-parent: Specifies the phandle of the interrupt controller to which
+  the interrupts from s5m8767 are delivered to.
+- interrupts: Interrupt specifiers for two interrupt sources.
+  - First interrupt specifier is for 'irq1' interrupt.
+  - Second interrupt specifier is for 'alert' interrupt.
+- s5m8767,pmic-buck2-uses-gpio-dvs: 'buck2' can be controlled by gpio dvs.
+- s5m8767,pmic-buck3-uses-gpio-dvs: 'buck3' can be controlled by gpio dvs.
+- s5m8767,pmic-buck4-uses-gpio-dvs: 'buck4' can be controlled by gpio dvs.
+
+Additional properties required if either of the optional properties are used:
+
+- s5m8767,pmic-buck234-default-dvs-idx: Default voltage setting selected from
+  the possible 8 options selectable by the dvs gpios. The value of this
+  property should be between 0 and 7. If not specified or if out of range, the
+  default value of this property is set to 0.
+
+- s5m8767,pmic-buck-dvs-gpios: GPIO specifiers for three host gpio's used
+  for dvs. The format of the gpio specifier depends in the gpio controller.
+
+Regulators: The regulators of s5m8767 that have to be instantiated should be
+included in a sub-node named 'regulators'. Regulator nodes included in this
+sub-node should be of the format as listed below.
+
+	regulator_name {
+		ldo1_reg: LDO1 {
+			regulator-name = "VDD_ALIVE_1.0V";
+			regulator-min-microvolt = <1100000>;
+			regulator-max-microvolt = <1100000>;
+			regulator-always-on;
+			regulator-boot-on;
+			op_mode = <1>; /* Normal Mode */
+		};
+	};
+The above regulator entries are defined in regulator bindings documentation
+except op_mode description.
+	- op_mode: describes the different operating modes of the LDO's with
+		power mode change in SOC. The different possible values are,
+		0 - always off mode
+		1 - on in normal mode
+		2 - low power mode
+		3 - suspend mode
+
+The following are the names of the regulators that the s5m8767 pmic block
+supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
+as per the datasheet of s5m8767.
+
+	- LDOn
+		  - valid values for n are 1 to 28
+		  - Example: LDO0, LD01, LDO28
+	- BUCKn
+		  - valid values for n are 1 to 9.
+		  - Example: BUCK1, BUCK2, BUCK9
+
+The bindings inside the regulator nodes use the standard regulator bindings
+which are documented elsewhere.
+
+Example:
+
+	s5m8767_pmic@66 {
+		compatible = "samsung,s5m8767-pmic";
+		reg = <0x66>;
+
+		s5m8767,pmic-buck2-uses-gpio-dvs;
+		s5m8767,pmic-buck3-uses-gpio-dvs;
+		s5m8767,pmic-buck4-uses-gpio-dvs;
+
+		s5m8767,pmic-buck-default-dvs-idx = <0>;
+
+		s5m8767,pmic-buck-dvs-gpios = <&gpx0 0 1 0 0>, /* DVS1 */
+						 <&gpx0 1 1 0 0>, /* DVS2 */
+						 <&gpx0 2 1 0 0>; /* DVS3 */
+
+		s5m8767,pmic-buck-ds-gpios = <&gpx2 3 1 0 0>, /* SET1 */
+						<&gpx2 4 1 0 0>, /* SET2 */
+						<&gpx2 5 1 0 0>; /* SET3 */
+
+		s5m8767,pmic-buck2-dvs-voltage = <1350000>, <1300000>,
+						 <1250000>, <1200000>,
+						 <1150000>, <1100000>,
+						 <1000000>, <950000>;
+
+		s5m8767,pmic-buck3-dvs-voltage = <1100000>, <1100000>,
+						 <1100000>, <1100000>,
+						 <1000000>, <1000000>,
+						 <1000000>, <1000000>;
+
+		s5m8767,pmic-buck4-dvs-voltage = <1200000>, <1200000>,
+						 <1200000>, <1200000>,
+						 <1200000>, <1200000>,
+						 <1200000>, <1200000>;
+
+		regulators {
+			ldo1_reg: LDO1 {
+				regulator-name = "VDD_ABB_3.3V";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				op_mode = <1>; /* Normal Mode */
+			};
+
+			ldo2_reg: LDO2 {
+				regulator-name = "VDD_ALIVE_1.1V";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-always-on;
+			};
+
+			buck1_reg: BUCK1 {
+				regulator-name = "VDD_MIF_1.2V";
+				regulator-min-microvolt = <950000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+		};
+	};

Documentation/devicetree/bindings/regulator/tps51632-regulator.txt

+TPS51632 Voltage regulators
+
+Required properties:
+- compatible: Must be "ti,tps51632"
+- reg: I2C slave address
+
+Optional properties:
+- ti,enable-pwm-dvfs: Enable the DVFS voltage control through the PWM interface.
+- ti,dvfs-step-20mV: The 20mV step voltage when PWM DVFS enabled. Missing this
+	will set 10mV step voltage in PWM DVFS mode. In normal mode, the voltage
+	step is 10mV as per datasheet.
+
+Any property defined as part of the core regulator binding, defined in
+regulator.txt, can also be used.
+
+Example:
+
+	tps51632 {
+		compatible = "ti,tps51632";
+		reg =  <0x43>;
+		regulator-name = "tps51632-vout";
+		regulator-min-microvolt = <500000>;
+		regulator-max-microvolt = <1500000>;
+		regulator-boot-on;
+		ti,enable-pwm-dvfs;
+		ti,dvfs-step-20mV;
+	};

drivers/mfd/sec-core.c

@@ -17,6 +17,7 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
+#include <linux/of_irq.h>
 #include <linux/interrupt.h>
 #include <linux/pm_runtime.h>
 #include <linux/mutex.h>
@@ -60,6 +61,15 @@ static struct mfd_cell s2mps11_devs[] = {
 	},
 };
 
+#ifdef CONFIG_OF
+static struct of_device_id sec_dt_match[] = {
+	{	.compatible = "samsung,s5m8767-pmic",
+		.data = (void *)S5M8767X,
+	},
+	{},
+};
+#endif
+
 int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)
 {
 	return regmap_read(sec_pmic->regmap, reg, dest);
@@ -95,6 +105,57 @@ static struct regmap_config sec_regmap_config = {
 	.val_bits = 8,
 };
 
+
+#ifdef CONFIG_OF
+/*
+ * Only the common platform data elements for s5m8767 are parsed here from the
+ * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
+ * others have to parse their own platform data elements from device tree.
+ *
+ * The s5m8767 platform data structure is instantiated here and the drivers for
+ * the sub-modules need not instantiate another instance while parsing their
+ * platform data.
+ */
+static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
+					struct device *dev)
+{
+	struct sec_platform_data *pd;
+
+	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+	if (!pd) {
+		dev_err(dev, "could not allocate memory for pdata\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	/*
+	 * ToDo: the 'wakeup' member in the platform data is more of a linux
+	 * specfic information. Hence, there is no binding for that yet and
+	 * not parsed here.
+	 */
+
+	return pd;
+}
+#else
+static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
+					struct device *dev)
+{
+	return 0;
+}
+#endif
+
+static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
+						const struct i2c_device_id *id)
+{
+#ifdef CONFIG_OF
+	if (i2c->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(sec_dt_match, i2c->dev.of_node);
+		return (int)match->data;
+	}
+#endif
+	return (int)id->driver_data;
+}
+
 static int sec_pmic_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
@@ -111,13 +172,22 @@ static int sec_pmic_probe(struct i2c_client *i2c,
 	sec_pmic->dev = &i2c->dev;
 	sec_pmic->i2c = i2c;
 	sec_pmic->irq = i2c->irq;
-	sec_pmic->type = id->driver_data;
+	sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
 
+	if (sec_pmic->dev->of_node) {
+		pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
+		if (IS_ERR(pdata)) {
+			ret = PTR_ERR(pdata);
+			return ret;
+		}
+		pdata->device_type = sec_pmic->type;
+	}
 	if (pdata) {
 		sec_pmic->device_type = pdata->device_type;
 		sec_pmic->ono = pdata->ono;
 		sec_pmic->irq_base = pdata->irq_base;
 		sec_pmic->wakeup = pdata->wakeup;
+		sec_pmic->pdata = pdata;
 	}
 
 	sec_pmic->regmap = devm_regmap_init_i2c(i2c, &sec_regmap_config);
@@ -192,6 +262,7 @@ static struct i2c_driver sec_pmic_driver = {
 	.driver = {
 		   .name = "sec_pmic",
 		   .owner = THIS_MODULE,
+		   .of_match_table = of_match_ptr(sec_dt_match),
 	},
 	.probe = sec_pmic_probe,
 	.remove = sec_pmic_remove,

drivers/regulator/88pm8607.c

@@ -30,8 +30,6 @@ struct pm8607_regulator_info {
 	unsigned int	*vol_table;
 	unsigned int	*vol_suspend;
 
-	int	update_reg;
-	int	update_bit;
 	int	slope_double;
 };
 
@@ -222,29 +220,6 @@ static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
 	return ret;
 }
 
-static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
-{
-	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
-	uint8_t val;
-	int ret;
-
-	val = (uint8_t)(selector << (ffs(rdev->desc->vsel_mask) - 1));
-
-	ret = pm860x_set_bits(info->i2c, rdev->desc->vsel_reg,
-			      rdev->desc->vsel_mask, val);
-	if (ret)
-		return ret;
-	switch (info->desc.id) {
-	case PM8607_ID_BUCK1:
-	case PM8607_ID_BUCK3:
-		ret = pm860x_set_bits(info->i2c, info->update_reg,
-				      1 << info->update_bit,
-				      1 << info->update_bit);
-		break;
-	}
-	return ret;
-}
-
 static int pm8606_preg_enable(struct regulator_dev *rdev)
 {
 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
@@ -276,7 +251,7 @@ static int pm8606_preg_is_enabled(struct regulator_dev *rdev)
 
 static struct regulator_ops pm8607_regulator_ops = {
 	.list_voltage	= pm8607_list_voltage,
-	.set_voltage_sel = pm8607_set_voltage_sel,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -313,11 +288,11 @@ static struct regulator_ops pm8606_preg_ops = {
 		.n_voltages = ARRAY_SIZE(vreg##_table),			\
 		.vsel_reg = PM8607_##vreg,				\
 		.vsel_mask = ARRAY_SIZE(vreg##_table) - 1,		\
+		.apply_reg = PM8607_##ureg,				\
+		.apply_bit = (ubit),					\
 		.enable_reg = PM8607_##ereg,				\
 		.enable_mask = 1 << (ebit),				\
 	},								\
-	.update_reg	= PM8607_##ureg,				\
-	.update_bit	= (ubit),					\
 	.slope_double	= (0),						\
 	.vol_table	= (unsigned int *)&vreg##_table,		\
 	.vol_suspend	= (unsigned int *)&vreg##_suspend_table,	\
@@ -343,9 +318,9 @@ static struct regulator_ops pm8606_preg_ops = {
 }
 
 static struct pm8607_regulator_info pm8607_regulator_info[] = {
-	PM8607_DVC(BUCK1, GO, 0, SUPPLIES_EN11, 0),
-	PM8607_DVC(BUCK2, GO, 1, SUPPLIES_EN11, 1),
-	PM8607_DVC(BUCK3, GO, 2, SUPPLIES_EN11, 2),
+	PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
+	PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
+	PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
 
 	PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
 	PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
@@ -372,7 +347,7 @@ static int pm8607_regulator_dt_init(struct platform_device *pdev,
 				    struct regulator_config *config)
 {
 	struct device_node *nproot, *np;
-	nproot = pdev->dev.parent->of_node;
+	nproot = of_node_get(pdev->dev.parent->of_node);
 	if (!nproot)
 		return -ENODEV;
 	nproot = of_find_node_by_name(nproot, "regulators");
@@ -388,6 +363,7 @@ static int pm8607_regulator_dt_init(struct platform_device *pdev,
 			break;
 		}
 	}
+	of_node_put(nproot);
 	return 0;
 }
 #else

drivers/regulator/Kconfig

@@ -91,6 +91,7 @@ config REGULATOR_AAT2870
 config REGULATOR_ARIZONA
 	tristate "Wolfson Arizona class devices"
 	depends on MFD_ARIZONA
+	depends on SND_SOC
 	help
 	  Support for the regulators found on Wolfson Arizona class
 	  devices.
@@ -277,6 +278,15 @@ config REGULATOR_LP872X
 	help
 	  This driver supports LP8720/LP8725 PMIC
 
+config REGULATOR_LP8755
+	tristate "TI LP8755 High Performance PMU driver"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  This driver supports LP8755 High Performance PMU driver. This
+	  chip contains six step-down DC/DC converters which can support
+	  9 mode multiphase configuration.
+
 config REGULATOR_LP8788
 	bool "TI LP8788 Power Regulators"
 	depends on MFD_LP8788

drivers/regulator/Makefile

@@ -30,6 +30,7 @@ obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o
 obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o
 obj-$(CONFIG_REGULATOR_LP8788) += lp8788-buck.o
 obj-$(CONFIG_REGULATOR_LP8788) += lp8788-ldo.o
+obj-$(CONFIG_REGULATOR_LP8755) += lp8755.o
 obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
 obj-$(CONFIG_REGULATOR_MAX8649)	+= max8649.o
 obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o

drivers/regulator/anatop-regulator.c

@@ -31,12 +31,18 @@
 #include <linux/regulator/driver.h>
 #include <linux/regulator/of_regulator.h>
 
+#define LDO_RAMP_UP_UNIT_IN_CYCLES      64 /* 64 cycles per step */
+#define LDO_RAMP_UP_FREQ_IN_MHZ         24 /* cycle based on 24M OSC */
+
 struct anatop_regulator {
 	const char *name;
 	u32 control_reg;
 	struct regmap *anatop;
 	int vol_bit_shift;
 	int vol_bit_width;
+	u32 delay_reg;
+	int delay_bit_shift;
+	int delay_bit_width;
 	int min_bit_val;
 	int min_voltage;
 	int max_voltage;
@@ -55,6 +61,32 @@ static int anatop_regmap_set_voltage_sel(struct regulator_dev *reg,
 	return regulator_set_voltage_sel_regmap(reg, selector);
 }
 
+static int anatop_regmap_set_voltage_time_sel(struct regulator_dev *reg,
+	unsigned int old_sel,
+	unsigned int new_sel)
+{
+	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
+	u32 val;
+	int ret = 0;
+
+	/* check whether need to care about LDO ramp up speed */
+	if (anatop_reg->delay_bit_width && new_sel > old_sel) {
+		/*
+		 * the delay for LDO ramp up time is
+		 * based on the register setting, we need
+		 * to calculate how many steps LDO need to
+		 * ramp up, and how much delay needed. (us)
+		 */
+		regmap_read(anatop_reg->anatop, anatop_reg->delay_reg, &val);
+		val = (val >> anatop_reg->delay_bit_shift) &
+			((1 << anatop_reg->delay_bit_width) - 1);
+		ret = (new_sel - old_sel) * (LDO_RAMP_UP_UNIT_IN_CYCLES <<
+			val) / LDO_RAMP_UP_FREQ_IN_MHZ + 1;
+	}
+
+	return ret;
+}
+
 static int anatop_regmap_get_voltage_sel(struct regulator_dev *reg)
 {
 	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
@@ -67,6 +99,7 @@ static int anatop_regmap_get_voltage_sel(struct regulator_dev *reg)
 
 static struct regulator_ops anatop_rops = {
 	.set_voltage_sel = anatop_regmap_set_voltage_sel,
+	.set_voltage_time_sel = anatop_regmap_set_voltage_time_sel,
 	.get_voltage_sel = anatop_regmap_get_voltage_sel,
 	.list_voltage = regulator_list_voltage_linear,
 	.map_voltage = regulator_map_voltage_linear,
@@ -143,6 +176,14 @@ static int anatop_regulator_probe(struct platform_device *pdev)
 		goto anatop_probe_end;
 	}
 
+	/* read LDO ramp up setting, only for core reg */
+	of_property_read_u32(np, "anatop-delay-reg-offset",
+			     &sreg->delay_reg);
+	of_property_read_u32(np, "anatop-delay-bit-width",
+			     &sreg->delay_bit_width);
+	of_property_read_u32(np, "anatop-delay-bit-shift",
+			     &sreg->delay_bit_shift);
+
 	rdesc->n_voltages = (sreg->max_voltage - sreg->min_voltage) / 25000 + 1
 			    + sreg->min_bit_val;
 	rdesc->min_uV = sreg->min_voltage;

drivers/regulator/arizona-micsupp.c

@@ -21,6 +21,8 @@
 #include <linux/regulator/machine.h>
 #include <linux/gpio.h>
 #include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <sound/soc.h>
 
 #include <linux/mfd/arizona/core.h>
 #include <linux/mfd/arizona/pdata.h>
@@ -34,6 +36,8 @@ struct arizona_micsupp {
 
 	struct regulator_consumer_supply supply;
 	struct regulator_init_data init_data;
+
+	struct work_struct check_cp_work;
 };
 
 static int arizona_micsupp_list_voltage(struct regulator_dev *rdev,
@@ -72,9 +76,73 @@ static int arizona_micsupp_map_voltage(struct regulator_dev *rdev,
 	return selector;
 }
 
+static void arizona_micsupp_check_cp(struct work_struct *work)
+{
+	struct arizona_micsupp *micsupp =
+		container_of(work, struct arizona_micsupp, check_cp_work);
+	struct snd_soc_dapm_context *dapm = micsupp->arizona->dapm;
+	struct arizona *arizona = micsupp->arizona;
+	struct regmap *regmap = arizona->regmap;
+	unsigned int reg;
+	int ret;
+
+	ret = regmap_read(regmap, ARIZONA_MIC_CHARGE_PUMP_1, &reg);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to read CP state: %d\n", ret);
+		return;
+	}
+
+	if (dapm) {
+		if ((reg & (ARIZONA_CPMIC_ENA | ARIZONA_CPMIC_BYPASS)) ==
+		    ARIZONA_CPMIC_ENA)
+			snd_soc_dapm_force_enable_pin(dapm, "MICSUPP");
+		else
+			snd_soc_dapm_disable_pin(dapm, "MICSUPP");
+
+		snd_soc_dapm_sync(dapm);
+	}
+}
+
+static int arizona_micsupp_enable(struct regulator_dev *rdev)
+{
+	struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
+	int ret;
+
+	ret = regulator_enable_regmap(rdev);
+
+	if (ret == 0)
+		schedule_work(&micsupp->check_cp_work);
+
+	return ret;
+}
+
+static int arizona_micsupp_disable(struct regulator_dev *rdev)
+{
+	struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
+	int ret;
+
+	ret = regulator_disable_regmap(rdev);
+	if (ret == 0)
+		schedule_work(&micsupp->check_cp_work);
+
+	return ret;
+}
+
+static int arizona_micsupp_set_bypass(struct regulator_dev *rdev, bool ena)
+{
+	struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
+	int ret;
+
+	ret = regulator_set_bypass_regmap(rdev, ena);
+	if (ret == 0)
+		schedule_work(&micsupp->check_cp_work);
+
+	return ret;
+}
+
 static struct regulator_ops arizona_micsupp_ops = {
-	.enable = regulator_enable_regmap,
-	.disable = regulator_disable_regmap,
+	.enable = arizona_micsupp_enable,
+	.disable = arizona_micsupp_disable,
 	.is_enabled = regulator_is_enabled_regmap,
 
 	.list_voltage = arizona_micsupp_list_voltage,
@@ -84,7 +152,7 @@ static struct regulator_ops arizona_micsupp_ops = {
 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 
 	.get_bypass = regulator_get_bypass_regmap,
-	.set_bypass = regulator_set_bypass_regmap,
+	.set_bypass = arizona_micsupp_set_bypass,
 };
 
 static const struct regulator_desc arizona_micsupp = {
@@ -109,7 +177,8 @@ static const struct regulator_desc arizona_micsupp = {
 static const struct regulator_init_data arizona_micsupp_default = {
 	.constraints = {
 		.valid_ops_mask = REGULATOR_CHANGE_STATUS |
-				REGULATOR_CHANGE_VOLTAGE,
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_BYPASS,
 		.min_uV = 1700000,
 		.max_uV = 3300000,
 	},
@@ -131,6 +200,7 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
 	}
 
 	micsupp->arizona = arizona;
+	INIT_WORK(&micsupp->check_cp_work, arizona_micsupp_check_cp);
 
 	/*
 	 * Since the chip usually supplies itself we provide some

drivers/regulator/as3711-regulator.c

@@ -303,7 +303,7 @@ static int as3711_regulator_probe(struct platform_device *pdev)
 		reg_data = pdata ? pdata->init_data[id] : NULL;
 
 		/* No need to register if there is no regulator data */
-		if (!ri->desc.name)
+		if (!reg_data)
 			continue;
 
 		reg = &regs[id];

drivers/regulator/core.c

@@ -200,8 +200,8 @@ static int regulator_check_consumers(struct regulator_dev *rdev,
 	}
 
 	if (*min_uV > *max_uV) {
-		dev_err(regulator->dev, "Restricting voltage, %u-%uuV\n",
-			regulator->min_uV, regulator->max_uV);
+		rdev_err(rdev, "Restricting voltage, %u-%uuV\n",
+			*min_uV, *max_uV);
 		return -EINVAL;
 	}
 
@@ -2080,10 +2080,20 @@ EXPORT_SYMBOL_GPL(regulator_get_voltage_sel_regmap);
  */
 int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel)
 {
+	int ret;
+
 	sel <<= ffs(rdev->desc->vsel_mask) - 1;
 
-	return regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
+	ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
 				  rdev->desc->vsel_mask, sel);
+	if (ret)
+		return ret;
+
+	if (rdev->desc->apply_bit)
+		ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg,
+					 rdev->desc->apply_bit,
+					 rdev->desc->apply_bit);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(regulator_set_voltage_sel_regmap);
 
@@ -2229,8 +2239,11 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 			best_val = rdev->desc->ops->list_voltage(rdev, ret);
 			if (min_uV <= best_val && max_uV >= best_val) {
 				selector = ret;
-				ret = rdev->desc->ops->set_voltage_sel(rdev,
-								       ret);
+				if (old_selector == selector)
+					ret = 0;
+				else
+					ret = rdev->desc->ops->set_voltage_sel(
+								rdev, ret);
 			} else {
 				ret = -EINVAL;
 			}
@@ -2241,7 +2254,7 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 
 	/* Call set_voltage_time_sel if successfully obtained old_selector */
 	if (ret == 0 && _regulator_is_enabled(rdev) && old_selector >= 0 &&
-	    rdev->desc->ops->set_voltage_time_sel) {
+	    old_selector != selector && rdev->desc->ops->set_voltage_time_sel) {
 
 		delay = rdev->desc->ops->set_voltage_time_sel(rdev,
 						old_selector, selector);
@@ -2294,6 +2307,7 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
 {
 	struct regulator_dev *rdev = regulator->rdev;
 	int ret = 0;
+	int old_min_uV, old_max_uV;
 
 	mutex_lock(&rdev->mutex);
 
@@ -2315,18 +2329,29 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
 	ret = regulator_check_voltage(rdev, &min_uV, &max_uV);
 	if (ret < 0)
 		goto out;
+	
+	/* restore original values in case of error */
+	old_min_uV = regulator->min_uV;
+	old_max_uV = regulator->max_uV;
 	regulator->min_uV = min_uV;
 	regulator->max_uV = max_uV;
 
 	ret = regulator_check_consumers(rdev, &min_uV, &max_uV);
 	if (ret < 0)
-		goto out;
+		goto out2;
 
 	ret = _regulator_do_set_voltage(rdev, min_uV, max_uV);
+	if (ret < 0)
+		goto out2;
 	
 out:
 	mutex_unlock(&rdev->mutex);
 	return ret;
+out2:
+	regulator->min_uV = old_min_uV;
+	regulator->max_uV = old_max_uV;
+	mutex_unlock(&rdev->mutex);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(regulator_set_voltage);
 
@@ -3208,7 +3233,7 @@ static int add_regulator_attributes(struct regulator_dev *rdev)
 		if (status < 0)
 			return status;
 	}
-	if (ops->is_enabled) {
+	if (rdev->ena_gpio || ops->is_enabled) {
 		status = device_create_file(dev, &dev_attr_state);
 		if (status < 0)
 			return status;

drivers/regulator/da9052-regulator.c

@@ -70,7 +70,6 @@ struct da9052_regulator_info {
 	int step_uV;
 	int min_uV;
 	int max_uV;
-	unsigned char activate_bit;
 };
 
 struct da9052_regulator {
@@ -210,36 +209,6 @@ static int da9052_map_voltage(struct regulator_dev *rdev,
 	return sel;
 }
 
-static int da9052_regulator_set_voltage_sel(struct regulator_dev *rdev,
-					    unsigned int selector)
-{
-	struct da9052_regulator *regulator = rdev_get_drvdata(rdev);
-	struct da9052_regulator_info *info = regulator->info;
-	int id = rdev_get_id(rdev);
-	int ret;
-
-	ret = da9052_reg_update(regulator->da9052, rdev->desc->vsel_reg,
-				rdev->desc->vsel_mask, selector);
-	if (ret < 0)
-		return ret;
-
-	/* Some LDOs and DCDCs are DVC controlled which requires enabling of
-	 * the activate bit to implment the changes on the output.
-	 */
-	switch (id) {
-	case DA9052_ID_BUCK1:
-	case DA9052_ID_BUCK2:
-	case DA9052_ID_BUCK3:
-	case DA9052_ID_LDO2:
-	case DA9052_ID_LDO3:
-		ret = da9052_reg_update(regulator->da9052, DA9052_SUPPLY_REG,
-					info->activate_bit, info->activate_bit);
-		break;
-	}
-
-	return ret;
-}
-
 static struct regulator_ops da9052_dcdc_ops = {
 	.get_current_limit = da9052_dcdc_get_current_limit,
 	.set_current_limit = da9052_dcdc_set_current_limit,
@@ -247,7 +216,7 @@ static struct regulator_ops da9052_dcdc_ops = {
 	.list_voltage = da9052_list_voltage,
 	.map_voltage = da9052_map_voltage,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
-	.set_voltage_sel = da9052_regulator_set_voltage_sel,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -257,7 +226,7 @@ static struct regulator_ops da9052_ldo_ops = {
 	.list_voltage = da9052_list_voltage,
 	.map_voltage = da9052_map_voltage,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
-	.set_voltage_sel = da9052_regulator_set_voltage_sel,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
@@ -274,13 +243,14 @@ static struct regulator_ops da9052_ldo_ops = {
 		.owner = THIS_MODULE,\
 		.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
 		.vsel_mask = (1 << (sbits)) - 1,\
+		.apply_reg = DA9052_SUPPLY_REG, \
+		.apply_bit = (abits), \
 		.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
 		.enable_mask = 1 << (ebits),\
 	},\
 	.min_uV = (min) * 1000,\
 	.max_uV = (max) * 1000,\
 	.step_uV = (step) * 1000,\
-	.activate_bit = (abits),\
 }
 
 #define DA9052_DCDC(_id, step, min, max, sbits, ebits, abits) \
@@ -294,13 +264,14 @@ static struct regulator_ops da9052_ldo_ops = {
 		.owner = THIS_MODULE,\
 		.vsel_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
 		.vsel_mask = (1 << (sbits)) - 1,\
+		.apply_reg = DA9052_SUPPLY_REG, \
+		.apply_bit = (abits), \
 		.enable_reg = DA9052_BUCKCORE_REG + DA9052_ID_##_id, \
 		.enable_mask = 1 << (ebits),\
 	},\
 	.min_uV = (min) * 1000,\
 	.max_uV = (max) * 1000,\
 	.step_uV = (step) * 1000,\
-	.activate_bit = (abits),\
 }
 
 static struct da9052_regulator_info da9052_regulator_info[] = {
@@ -395,9 +366,9 @@ static int da9052_regulator_probe(struct platform_device *pdev)
 		config.init_data = pdata->regulators[pdev->id];
 	} else {
 #ifdef CONFIG_OF
-		struct device_node *nproot = da9052->dev->of_node;
-		struct device_node *np;
+		struct device_node *nproot, *np;
 
+		nproot = of_node_get(da9052->dev->of_node);
 		if (!nproot)
 			return -ENODEV;
 
@@ -414,6 +385,7 @@ static int da9052_regulator_probe(struct platform_device *pdev)
 				break;
 			}
 		}
+		of_node_put(nproot);
 #endif
 	}
 

drivers/regulator/da9055-regulator.c

@@ -58,7 +58,6 @@ struct da9055_volt_reg {
 	int reg_b;
 	int sl_shift;
 	int v_mask;
-	int v_shift;
 };
 
 struct da9055_mode_reg {
@@ -388,7 +387,6 @@ static struct regulator_ops da9055_ldo_ops = {
 		.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
 		.sl_shift = 7,\
 		.v_mask = (1 << (vbits)) - 1,\
-		.v_shift = (vbits),\
 	},\
 }
 
@@ -417,7 +415,6 @@ static struct regulator_ops da9055_ldo_ops = {
 		.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
 		.sl_shift = 7,\
 		.v_mask = (1 << (vbits)) - 1,\
-		.v_shift = (vbits),\
 	},\
 	.mode = {\
 		.reg = DA9055_REG_BCORE_MODE,\

drivers/regulator/gpio-regulator.c

@@ -132,7 +132,7 @@ static struct regulator_ops gpio_regulator_voltage_ops = {
 	.list_voltage = gpio_regulator_list_voltage,
 };
 
-struct gpio_regulator_config *
+static struct gpio_regulator_config *
 of_get_gpio_regulator_config(struct device *dev, struct device_node *np)
 {
 	struct gpio_regulator_config *config;
@@ -163,10 +163,7 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np)
 	config->enable_gpio = of_get_named_gpio(np, "enable-gpio", 0);
 
 	/* Fetch GPIOs. */
-	for (i = 0; ; i++)
-		if (of_get_named_gpio(np, "gpios", i) < 0)
-			break;
-	config->nr_gpios = i;
+	config->nr_gpios = of_gpio_count(np);
 
 	config->gpios = devm_kzalloc(dev,
 				sizeof(struct gpio) * config->nr_gpios,

drivers/regulator/lp3971.c

@@ -73,8 +73,6 @@ static const unsigned int buck_voltage_map[] = {
 };
 
 #define BUCK_TARGET_VOL_MASK 0x3f
-#define BUCK_TARGET_VOL_MIN_IDX 0x01
-#define BUCK_TARGET_VOL_MAX_IDX 0x19
 
 #define LP3971_BUCK_RAMP_REG(x)	(buck_base_addr[x]+2)
 
@@ -140,7 +138,7 @@ static int lp3971_ldo_disable(struct regulator_dev *dev)
 	return lp3971_set_bits(lp3971, LP3971_LDO_ENABLE_REG, mask, 0);
 }
 
-static int lp3971_ldo_get_voltage(struct regulator_dev *dev)
+static int lp3971_ldo_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct lp3971 *lp3971 = rdev_get_drvdata(dev);
 	int ldo = rdev_get_id(dev) - LP3971_LDO1;
@@ -149,7 +147,7 @@ static int lp3971_ldo_get_voltage(struct regulator_dev *dev)
 	reg = lp3971_reg_read(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo));
 	val = (reg >> LDO_VOL_CONTR_SHIFT(ldo)) & LDO_VOL_CONTR_MASK;
 
-	return dev->desc->volt_table[val];
+	return val;
 }
 
 static int lp3971_ldo_set_voltage_sel(struct regulator_dev *dev,
@@ -168,7 +166,7 @@ static struct regulator_ops lp3971_ldo_ops = {
 	.is_enabled = lp3971_ldo_is_enabled,
 	.enable = lp3971_ldo_enable,
 	.disable = lp3971_ldo_disable,
-	.get_voltage = lp3971_ldo_get_voltage,
+	.get_voltage_sel = lp3971_ldo_get_voltage_sel,
 	.set_voltage_sel = lp3971_ldo_set_voltage_sel,
 };
 
@@ -201,24 +199,16 @@ static int lp3971_dcdc_disable(struct regulator_dev *dev)
 	return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_ENABLE_REG, mask, 0);
 }
 
-static int lp3971_dcdc_get_voltage(struct regulator_dev *dev)
+static int lp3971_dcdc_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct lp3971 *lp3971 = rdev_get_drvdata(dev);
 	int buck = rdev_get_id(dev) - LP3971_DCDC1;
 	u16 reg;
-	int val;
 
 	reg = lp3971_reg_read(lp3971, LP3971_BUCK_TARGET_VOL1_REG(buck));
 	reg &= BUCK_TARGET_VOL_MASK;
 
-	if (reg <= BUCK_TARGET_VOL_MAX_IDX)
-		val = buck_voltage_map[reg];
-	else {
-		val = 0;
-		dev_warn(&dev->dev, "chip reported incorrect voltage value.\n");
-	}
-
-	return val;
+	return reg;
 }
 
 static int lp3971_dcdc_set_voltage_sel(struct regulator_dev *dev,
@@ -249,7 +239,7 @@ static struct regulator_ops lp3971_dcdc_ops = {
 	.is_enabled = lp3971_dcdc_is_enabled,
 	.enable = lp3971_dcdc_enable,
 	.disable = lp3971_dcdc_disable,
-	.get_voltage = lp3971_dcdc_get_voltage,
+	.get_voltage_sel = lp3971_dcdc_get_voltage_sel,
 	.set_voltage_sel = lp3971_dcdc_set_voltage_sel,
 };
 

drivers/regulator/lp3972.c

@@ -165,8 +165,6 @@ static const int buck_base_addr[] = {
 #define LP3972_BUCK_VOL_ENABLE_REG(x) (buck_vol_enable_addr[x])
 #define LP3972_BUCK_VOL1_REG(x) (buck_base_addr[x])
 #define LP3972_BUCK_VOL_MASK 0x1f
-#define LP3972_BUCK_VOL_MIN_IDX(x) ((x) ? 0x01 : 0x00)
-#define LP3972_BUCK_VOL_MAX_IDX(x) ((x) ? 0x19 : 0x1f)
 
 static int lp3972_i2c_read(struct i2c_client *i2c, char reg, int count,
 	u16 *dest)
@@ -257,7 +255,7 @@ static int lp3972_ldo_disable(struct regulator_dev *dev)
 				mask, 0);
 }
 
-static int lp3972_ldo_get_voltage(struct regulator_dev *dev)
+static int lp3972_ldo_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct lp3972 *lp3972 = rdev_get_drvdata(dev);
 	int ldo = rdev_get_id(dev) - LP3972_LDO1;
@@ -267,7 +265,7 @@ static int lp3972_ldo_get_voltage(struct regulator_dev *dev)
 	reg = lp3972_reg_read(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo));
 	val = (reg >> LP3972_LDO_VOL_CONTR_SHIFT(ldo)) & mask;
 
-	return dev->desc->volt_table[val];
+	return val;
 }
 
 static int lp3972_ldo_set_voltage_sel(struct regulator_dev *dev,
@@ -314,7 +312,7 @@ static struct regulator_ops lp3972_ldo_ops = {
 	.is_enabled = lp3972_ldo_is_enabled,
 	.enable = lp3972_ldo_enable,
 	.disable = lp3972_ldo_disable,
-	.get_voltage = lp3972_ldo_get_voltage,
+	.get_voltage_sel = lp3972_ldo_get_voltage_sel,
 	.set_voltage_sel = lp3972_ldo_set_voltage_sel,
 };
 
@@ -353,24 +351,16 @@ static int lp3972_dcdc_disable(struct regulator_dev *dev)
 	return val;
 }
 
-static int lp3972_dcdc_get_voltage(struct regulator_dev *dev)
+static int lp3972_dcdc_get_voltage_sel(struct regulator_dev *dev)
 {
 	struct lp3972 *lp3972 = rdev_get_drvdata(dev);
 	int buck = rdev_get_id(dev) - LP3972_DCDC1;
 	u16 reg;
-	int val;
 
 	reg = lp3972_reg_read(lp3972, LP3972_BUCK_VOL1_REG(buck));
 	reg &= LP3972_BUCK_VOL_MASK;
-	if (reg <= LP3972_BUCK_VOL_MAX_IDX(buck))
-		val = dev->desc->volt_table[reg];
-	else {
-		val = 0;
-		dev_warn(&dev->dev, "chip reported incorrect voltage value."
-				    " reg = %d\n", reg);
-	}
 
-	return val;
+	return reg;
 }
 
 static int lp3972_dcdc_set_voltage_sel(struct regulator_dev *dev,
@@ -402,7 +392,7 @@ static struct regulator_ops lp3972_dcdc_ops = {
 	.is_enabled = lp3972_dcdc_is_enabled,
 	.enable = lp3972_dcdc_enable,
 	.disable = lp3972_dcdc_disable,
-	.get_voltage = lp3972_dcdc_get_voltage,
+	.get_voltage_sel = lp3972_dcdc_get_voltage_sel,
 	.set_voltage_sel = lp3972_dcdc_set_voltage_sel,
 };
 

drivers/regulator/lp872x.c

@@ -181,20 +181,6 @@ static inline int lp872x_update_bits(struct lp872x *lp, u8 addr,
 	return regmap_update_bits(lp->regmap, addr, mask, data);
 }
 
-static int _rdev_to_offset(struct regulator_dev *rdev)
-{
-	enum lp872x_regulator_id id = rdev_get_id(rdev);
-
-	switch (id) {
-	case LP8720_ID_LDO1 ... LP8720_ID_BUCK:
-		return id;
-	case LP8725_ID_LDO1 ... LP8725_ID_BUCK2:
-		return id - LP8725_ID_BASE;
-	default:
-		return -EINVAL;
-	}
-}
-
 static int lp872x_get_timestep_usec(struct lp872x *lp)
 {
 	enum lp872x_id chip = lp->chipid;
@@ -234,28 +220,20 @@ static int lp872x_get_timestep_usec(struct lp872x *lp)
 static int lp872x_regulator_enable_time(struct regulator_dev *rdev)
 {
 	struct lp872x *lp = rdev_get_drvdata(rdev);
-	enum lp872x_regulator_id regulator = rdev_get_id(rdev);
+	enum lp872x_regulator_id rid = rdev_get_id(rdev);
 	int time_step_us = lp872x_get_timestep_usec(lp);
-	int ret, offset;
+	int ret;
 	u8 addr, val;
 
 	if (time_step_us < 0)
 		return -EINVAL;
 
-	switch (regulator) {
-	case LP8720_ID_LDO1 ... LP8720_ID_LDO5:
-	case LP8725_ID_LDO1 ... LP8725_ID_LILO2:
-		offset = _rdev_to_offset(rdev);
-		if (offset < 0)
-			return -EINVAL;
-
-		addr = LP872X_LDO1_VOUT + offset;
-		break;
-	case LP8720_ID_BUCK:
-		addr = LP8720_BUCK_VOUT1;
+	switch (rid) {
+	case LP8720_ID_LDO1 ... LP8720_ID_BUCK:
+		addr = LP872X_LDO1_VOUT + rid;
 		break;
-	case LP8725_ID_BUCK1:
-		addr = LP8725_BUCK1_VOUT1;
+	case LP8725_ID_LDO1 ... LP8725_ID_BUCK1:
+		addr = LP872X_LDO1_VOUT + rid - LP8725_ID_BASE;
 		break;
 	case LP8725_ID_BUCK2:
 		addr = LP8725_BUCK2_VOUT1;

drivers/regulator/lp8788-buck.c

@@ -103,16 +103,6 @@ static const int lp8788_buck_vtbl[] = {
 	1950000, 2000000,
 };
 
-static const u8 buck1_vout_addr[] = {
-	LP8788_BUCK1_VOUT0, LP8788_BUCK1_VOUT1,
-	LP8788_BUCK1_VOUT2, LP8788_BUCK1_VOUT3,
-};
-
-static const u8 buck2_vout_addr[] = {
-	LP8788_BUCK2_VOUT0, LP8788_BUCK2_VOUT1,
-	LP8788_BUCK2_VOUT2, LP8788_BUCK2_VOUT3,
-};
-
 static void lp8788_buck1_set_dvs(struct lp8788_buck *buck)
 {
 	struct lp8788_buck1_dvs *dvs = (struct lp8788_buck1_dvs *)buck->dvs;
@@ -235,7 +225,7 @@ static u8 lp8788_select_buck_vout_addr(struct lp8788_buck *buck,
 			lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val);
 			idx = (val & LP8788_BUCK1_DVS_M) >> LP8788_BUCK1_DVS_S;
 		}
-		addr = buck1_vout_addr[idx];
+		addr = LP8788_BUCK1_VOUT0 + idx;
 		break;
 	case BUCK2:
 		if (mode == EXTPIN) {
@@ -258,7 +248,7 @@ static u8 lp8788_select_buck_vout_addr(struct lp8788_buck *buck,
 			lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val);
 			idx = (val & LP8788_BUCK2_DVS_M) >> LP8788_BUCK2_DVS_S;
 		}
-		addr = buck2_vout_addr[idx];
+		addr = LP8788_BUCK2_VOUT0 + idx;
 		break;
 	default:
 		goto err;
@@ -429,7 +419,8 @@ static struct regulator_desc lp8788_buck_desc[] = {
 	},
 };
 
-static int lp8788_dvs_gpio_request(struct lp8788_buck *buck,
+static int lp8788_dvs_gpio_request(struct platform_device *pdev,
+				struct lp8788_buck *buck,
 				enum lp8788_buck_id id)
 {
 	struct lp8788_platform_data *pdata = buck->lp->pdata;
@@ -440,7 +431,7 @@ static int lp8788_dvs_gpio_request(struct lp8788_buck *buck,
 	switch (id) {
 	case BUCK1:
 		gpio = pdata->buck1_dvs->gpio;
-		ret = devm_gpio_request_one(buck->lp->dev, gpio, DVS_LOW,
+		ret = devm_gpio_request_one(&pdev->dev, gpio, DVS_LOW,
 					    b1_name);
 		if (ret)
 			return ret;
@@ -448,9 +439,9 @@ static int lp8788_dvs_gpio_request(struct lp8788_buck *buck,
 		buck->dvs = pdata->buck1_dvs;
 		break;
 	case BUCK2:
-		for (i = 0 ; i < LP8788_NUM_BUCK2_DVS ; i++) {
+		for (i = 0; i < LP8788_NUM_BUCK2_DVS; i++) {
 			gpio = pdata->buck2_dvs->gpio[i];
-			ret = devm_gpio_request_one(buck->lp->dev, gpio,
+			ret = devm_gpio_request_one(&pdev->dev, gpio,
 						    DVS_LOW, b2_name[i]);
 			if (ret)
 				return ret;
@@ -464,7 +455,8 @@ static int lp8788_dvs_gpio_request(struct lp8788_buck *buck,
 	return 0;
 }
 
-static int lp8788_init_dvs(struct lp8788_buck *buck, enum lp8788_buck_id id)
+static int lp8788_init_dvs(struct platform_device *pdev,
+			struct lp8788_buck *buck, enum lp8788_buck_id id)
 {
 	struct lp8788_platform_data *pdata = buck->lp->pdata;
 	u8 mask[] = { LP8788_BUCK1_DVS_SEL_M, LP8788_BUCK2_DVS_SEL_M };
@@ -472,7 +464,7 @@ static int lp8788_init_dvs(struct lp8788_buck *buck, enum lp8788_buck_id id)
 	u8 default_dvs_mode[] = { LP8788_BUCK1_DVS_I2C, LP8788_BUCK2_DVS_I2C };
 
 	/* no dvs for buck3, 4 */
-	if (id == BUCK3 || id == BUCK4)
+	if (id > BUCK2)
 		return 0;
 
 	/* no dvs platform data, then dvs will be selected by I2C registers */
@@ -483,7 +475,7 @@ static int lp8788_init_dvs(struct lp8788_buck *buck, enum lp8788_buck_id id)
 		(id == BUCK2 && !pdata->buck2_dvs))
 		goto set_default_dvs_mode;
 
-	if (lp8788_dvs_gpio_request(buck, id))
+	if (lp8788_dvs_gpio_request(pdev, buck, id))
 		goto set_default_dvs_mode;
 
 	return lp8788_update_bits(buck->lp, LP8788_BUCK_DVS_SEL, mask[id],
@@ -503,17 +495,20 @@ static int lp8788_buck_probe(struct platform_device *pdev)
 	struct regulator_dev *rdev;
 	int ret;
 
-	buck = devm_kzalloc(lp->dev, sizeof(struct lp8788_buck), GFP_KERNEL);
+	if (id >= LP8788_NUM_BUCKS)
+		return -EINVAL;
+
+	buck = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_buck), GFP_KERNEL);
 	if (!buck)
 		return -ENOMEM;
 
 	buck->lp = lp;
 
-	ret = lp8788_init_dvs(buck, id);
+	ret = lp8788_init_dvs(pdev, buck, id);
 	if (ret)
 		return ret;
 
-	cfg.dev = lp->dev;
+	cfg.dev = pdev->dev.parent;
 	cfg.init_data = lp->pdata ? lp->pdata->buck_data[id] : NULL;
 	cfg.driver_data = buck;
 	cfg.regmap = lp->regmap;
@@ -521,7 +516,7 @@ static int lp8788_buck_probe(struct platform_device *pdev)
 	rdev = regulator_register(&lp8788_buck_desc[id], &cfg);
 	if (IS_ERR(rdev)) {
 		ret = PTR_ERR(rdev);
-		dev_err(lp->dev, "BUCK%d regulator register err = %d\n",
+		dev_err(&pdev->dev, "BUCK%d regulator register err = %d\n",
 				id + 1, ret);
 		return ret;
 	}

drivers/regulator/lp8788-ldo.c

@@ -88,11 +88,6 @@
 #define ENABLE				GPIOF_OUT_INIT_HIGH
 #define DISABLE				GPIOF_OUT_INIT_LOW
 
-enum lp8788_enable_mode {
-	REGISTER,
-	EXTPIN,
-};
-
 enum lp8788_ldo_id {
 	DLDO1,
 	DLDO2,
@@ -189,114 +184,38 @@ static enum lp8788_ldo_id lp8788_aldo_id[] = {
 	ALDO10,
 };
 
-/* DLDO 7, 9 and 11, ALDO 1 ~ 5 and 7
-   : can be enabled either by external pin or by i2c register */
-static enum lp8788_enable_mode
-lp8788_get_ldo_enable_mode(struct lp8788_ldo *ldo, enum lp8788_ldo_id id)
-{
-	int ret;
-	u8 val, mask;
-
-	ret = lp8788_read_byte(ldo->lp, LP8788_EN_SEL, &val);
-	if (ret)
-		return ret;
-
-	switch (id) {
-	case DLDO7:
-		mask =  LP8788_EN_SEL_DLDO7_M;
-		break;
-	case DLDO9:
-	case DLDO11:
-		mask =  LP8788_EN_SEL_DLDO911_M;
-		break;
-	case ALDO1:
-		mask =  LP8788_EN_SEL_ALDO1_M;
-		break;
-	case ALDO2 ... ALDO4:
-		mask =  LP8788_EN_SEL_ALDO234_M;
-		break;
-	case ALDO5:
-		mask =  LP8788_EN_SEL_ALDO5_M;
-		break;
-	case ALDO7:
-		mask =  LP8788_EN_SEL_ALDO7_M;
-		break;
-	default:
-		return REGISTER;
-	}
-
-	return val & mask ? EXTPIN : REGISTER;
-}
-
-static int lp8788_ldo_ctrl_by_extern_pin(struct lp8788_ldo *ldo, int pinstate)
-{
-	struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
-
-	if (!pin)
-		return -EINVAL;
-
-	if (gpio_is_valid(pin->gpio))
-		gpio_set_value(pin->gpio, pinstate);
-
-	return 0;
-}
-
-static int lp8788_ldo_is_enabled_by_extern_pin(struct lp8788_ldo *ldo)
-{
-	struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
-
-	if (!pin)
-		return -EINVAL;
-
-	return gpio_get_value(pin->gpio) ? 1 : 0;
-}
-
 static int lp8788_ldo_enable(struct regulator_dev *rdev)
 {
 	struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
-	enum lp8788_ldo_id id = rdev_get_id(rdev);
-	enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id);
 
-	switch (mode) {
-	case EXTPIN:
-		return lp8788_ldo_ctrl_by_extern_pin(ldo, ENABLE);
-	case REGISTER:
+	if (ldo->en_pin) {
+		gpio_set_value(ldo->en_pin->gpio, ENABLE);
+		return 0;
+	} else {
 		return regulator_enable_regmap(rdev);
-	default:
-		return -EINVAL;
 	}
 }
 
 static int lp8788_ldo_disable(struct regulator_dev *rdev)
 {
 	struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
-	enum lp8788_ldo_id id = rdev_get_id(rdev);
-	enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id);
 
-	switch (mode) {
-	case EXTPIN:
-		return lp8788_ldo_ctrl_by_extern_pin(ldo, DISABLE);
-	case REGISTER:
+	if (ldo->en_pin) {
+		gpio_set_value(ldo->en_pin->gpio, DISABLE);
+		return 0;
+	} else {
 		return regulator_disable_regmap(rdev);
-	default:
-		return -EINVAL;
 	}
 }
 
 static int lp8788_ldo_is_enabled(struct regulator_dev *rdev)
 {
 	struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
-	enum lp8788_ldo_id id = rdev_get_id(rdev);
-	enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id);
 
-	switch (mode) {
-	case EXTPIN:
-		return lp8788_ldo_is_enabled_by_extern_pin(ldo);
-	case REGISTER:
+	if (ldo->en_pin)
+		return gpio_get_value(ldo->en_pin->gpio) ? 1 : 0;
+	else
 		return regulator_is_enabled_regmap(rdev);
-	default:
-		return -EINVAL;
-	}
 }
 
 static int lp8788_ldo_enable_time(struct regulator_dev *rdev)
@@ -616,10 +535,11 @@ static struct regulator_desc lp8788_aldo_desc[] = {
 	},
 };
 
-static int lp8788_gpio_request_ldo_en(struct lp8788_ldo *ldo,
+static int lp8788_gpio_request_ldo_en(struct platform_device *pdev,
+				struct lp8788_ldo *ldo,
 				enum lp8788_ext_ldo_en_id id)
 {
-	struct device *dev = ldo->lp->dev;
+	struct device *dev = &pdev->dev;
 	struct lp8788_ldo_enable_pin *pin = ldo->en_pin;
 	int ret, gpio, pinstate;
 	char *name[] = {
@@ -647,7 +567,8 @@ static int lp8788_gpio_request_ldo_en(struct lp8788_ldo *ldo,
 	return ret;
 }
 
-static int lp8788_config_ldo_enable_mode(struct lp8788_ldo *ldo,
+static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
+					struct lp8788_ldo *ldo,
 					enum lp8788_ldo_id id)
 {
 	int ret;
@@ -693,9 +614,11 @@ static int lp8788_config_ldo_enable_mode(struct lp8788_ldo *ldo,
 
 	ldo->en_pin = pdata->ldo_pin[enable_id];
 
-	ret = lp8788_gpio_request_ldo_en(ldo, enable_id);
-	if (ret)
+	ret = lp8788_gpio_request_ldo_en(pdev, ldo, enable_id);
+	if (ret) {
+		ldo->en_pin = NULL;
 		goto set_default_ldo_enable_mode;
+	}
 
 	return ret;
 
@@ -712,16 +635,16 @@ static int lp8788_dldo_probe(struct platform_device *pdev)
 	struct regulator_dev *rdev;
 	int ret;
 
-	ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
+	ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
 	if (!ldo)
 		return -ENOMEM;
 
 	ldo->lp = lp;
-	ret = lp8788_config_ldo_enable_mode(ldo, lp8788_dldo_id[id]);
+	ret = lp8788_config_ldo_enable_mode(pdev, ldo, lp8788_dldo_id[id]);
 	if (ret)
 		return ret;
 
-	cfg.dev = lp->dev;
+	cfg.dev = pdev->dev.parent;
 	cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL;
 	cfg.driver_data = ldo;
 	cfg.regmap = lp->regmap;
@@ -729,7 +652,7 @@ static int lp8788_dldo_probe(struct platform_device *pdev)
 	rdev = regulator_register(&lp8788_dldo_desc[id], &cfg);
 	if (IS_ERR(rdev)) {
 		ret = PTR_ERR(rdev);
-		dev_err(lp->dev, "DLDO%d regulator register err = %d\n",
+		dev_err(&pdev->dev, "DLDO%d regulator register err = %d\n",
 				id + 1, ret);
 		return ret;
 	}
@@ -768,16 +691,16 @@ static int lp8788_aldo_probe(struct platform_device *pdev)
 	struct regulator_dev *rdev;
 	int ret;
 
-	ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
+	ldo = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
 	if (!ldo)
 		return -ENOMEM;
 
 	ldo->lp = lp;
-	ret = lp8788_config_ldo_enable_mode(ldo, lp8788_aldo_id[id]);
+	ret = lp8788_config_ldo_enable_mode(pdev, ldo, lp8788_aldo_id[id]);
 	if (ret)
 		return ret;
 
-	cfg.dev = lp->dev;
+	cfg.dev = pdev->dev.parent;
 	cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL;
 	cfg.driver_data = ldo;
 	cfg.regmap = lp->regmap;
@@ -785,7 +708,7 @@ static int lp8788_aldo_probe(struct platform_device *pdev)
 	rdev = regulator_register(&lp8788_aldo_desc[id], &cfg);
 	if (IS_ERR(rdev)) {
 		ret = PTR_ERR(rdev);
-		dev_err(lp->dev, "ALDO%d regulator register err = %d\n",
+		dev_err(&pdev->dev, "ALDO%d regulator register err = %d\n",
 				id + 1, ret);
 		return ret;
 	}

drivers/regulator/max77686.c

@@ -75,13 +75,14 @@ static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
 {
 	unsigned int val;
 	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
+        int id = rdev_get_id(rdev);
 
-	if (rdev->desc->id == MAX77686_BUCK1)
+	if (id == MAX77686_BUCK1)
 		val = 0x1;
 	else
 		val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT;
 
-	max77686->opmode[rdev->desc->id] = val;
+	max77686->opmode[id] = val;
 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 				  rdev->desc->enable_mask,
 				  val);
@@ -93,9 +94,10 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,
 {
 	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
 	unsigned int val;
+        int id = rdev_get_id(rdev);
 
 	/* BUCK[5-9] doesn't support this feature */
-	if (rdev->desc->id >= MAX77686_BUCK5)
+	if (id >= MAX77686_BUCK5)
 		return 0;
 
 	switch (mode) {
@@ -111,7 +113,7 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
-	max77686->opmode[rdev->desc->id] = val;
+	max77686->opmode[id] = val;
 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 				  rdev->desc->enable_mask,
 				  val);
@@ -140,7 +142,7 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
-	max77686->opmode[rdev->desc->id] = val;
+	max77686->opmode[rdev_get_id(rdev)] = val;
 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 				  rdev->desc->enable_mask,
 				  val);
@@ -152,7 +154,7 @@ static int max77686_enable(struct regulator_dev *rdev)
 
 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 				  rdev->desc->enable_mask,
-				  max77686->opmode[rdev->desc->id]);
+				  max77686->opmode[rdev_get_id(rdev)]);
 }
 
 static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)

drivers/regulator/max8907-regulator.c

@@ -224,11 +224,11 @@ static struct of_regulator_match max8907_matches[] = {
 
 static int max8907_regulator_parse_dt(struct platform_device *pdev)
 {
-	struct device_node *np = pdev->dev.parent->of_node;
-	struct device_node *regulators;
+	struct device_node *np, *regulators;
 	int ret;
 
-	if (!pdev->dev.parent->of_node)
+	np = of_node_get(pdev->dev.parent->of_node);
+	if (!np)
 		return 0;
 
 	regulators = of_find_node_by_name(np, "regulators");
@@ -239,6 +239,7 @@ static int max8907_regulator_parse_dt(struct platform_device *pdev)
 
 	ret = of_regulator_match(&pdev->dev, regulators, max8907_matches,
 				 ARRAY_SIZE(max8907_matches));
+	of_node_put(regulators);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
 			ret);

drivers/regulator/max8925-regulator.c

@@ -252,7 +252,7 @@ static int max8925_regulator_dt_init(struct platform_device *pdev,
 {
 	struct device_node *nproot, *np;
 	int rcount;
-	nproot = pdev->dev.parent->of_node;
+	nproot = of_node_get(pdev->dev.parent->of_node);
 	if (!nproot)
 		return -ENODEV;
 	np = of_find_node_by_name(nproot, "regulators");
@@ -263,6 +263,7 @@ static int max8925_regulator_dt_init(struct platform_device *pdev,
 
 	rcount = of_regulator_match(&pdev->dev, np,
 				&max8925_regulator_matches[ridx], 1);
+	of_node_put(np);
 	if (rcount < 0)
 		return -ENODEV;
 	config->init_data =	max8925_regulator_matches[ridx].init_data;

drivers/regulator/max8997.c

@@ -54,6 +54,13 @@ struct max8997_data {
 	u8 saved_states[MAX8997_REG_MAX];
 };
 
+static const unsigned int safeoutvolt[] = {
+	4850000,
+	4900000,
+	4950000,
+	3300000,
+};
+
 static inline void max8997_set_gpio(struct max8997_data *max8997)
 {
 	int set3 = (max8997->buck125_gpioindex) & 0x1;
@@ -130,29 +137,6 @@ static const struct voltage_map_desc *reg_voltage_map[] = {
 	[MAX8997_CHARGER_TOPOFF] = &topoff_current_map_desc,
 };
 
-static int max8997_list_voltage_safeout(struct regulator_dev *rdev,
-		unsigned int selector)
-{
-	int rid = rdev_get_id(rdev);
-
-	if (rid == MAX8997_ESAFEOUT1 || rid == MAX8997_ESAFEOUT2) {
-		switch (selector) {
-		case 0:
-			return 4850000;
-		case 1:
-			return 4900000;
-		case 2:
-			return 4950000;
-		case 3:
-			return 3300000;
-		default:
-			return -EINVAL;
-		}
-	}
-
-	return -EINVAL;
-}
-
 static int max8997_list_voltage_charger_cv(struct regulator_dev *rdev,
 		unsigned int selector)
 {
@@ -522,7 +506,7 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
 	return ret;
 }
 
-static int max8997_set_voltage_ldobuck_time_sel(struct regulator_dev *rdev,
+static int max8997_set_voltage_buck_time_sel(struct regulator_dev *rdev,
 						unsigned int old_selector,
 						unsigned int new_selector)
 {
@@ -720,49 +704,23 @@ static int max8997_set_voltage_buck(struct regulator_dev *rdev,
 	return 0;
 }
 
-static const int safeoutvolt[] = {
-	3300000,
-	4850000,
-	4900000,
-	4950000,
-};
-
 /* For SAFEOUT1 and SAFEOUT2 */
-static int max8997_set_voltage_safeout(struct regulator_dev *rdev,
-		int min_uV, int max_uV, unsigned *selector)
+static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev,
+					   unsigned selector)
 {
 	struct max8997_data *max8997 = rdev_get_drvdata(rdev);
 	struct i2c_client *i2c = max8997->iodev->i2c;
 	int rid = rdev_get_id(rdev);
 	int reg, shift = 0, mask, ret;
-	int i = 0;
-	u8 val;
 
 	if (rid != MAX8997_ESAFEOUT1 && rid != MAX8997_ESAFEOUT2)
 		return -EINVAL;
 
-	for (i = 0; i < ARRAY_SIZE(safeoutvolt); i++) {
-		if (min_uV <= safeoutvolt[i] &&
-				max_uV >= safeoutvolt[i])
-			break;
-	}
-
-	if (i >= ARRAY_SIZE(safeoutvolt))
-		return -EINVAL;
-
-	if (i == 0)
-		val = 0x3;
-	else
-		val = i - 1;
-
 	ret = max8997_get_voltage_register(rdev, &reg, &shift, &mask);
 	if (ret)
 		return ret;
 
-	ret = max8997_update_reg(i2c, reg, val << shift, mask << shift);
-	*selector = val;
-
-	return ret;
+	return max8997_update_reg(i2c, reg, selector << shift, mask << shift);
 }
 
 static int max8997_reg_disable_suspend(struct regulator_dev *rdev)
@@ -799,7 +757,6 @@ static struct regulator_ops max8997_ldo_ops = {
 	.disable		= max8997_reg_disable,
 	.get_voltage_sel	= max8997_get_voltage_sel,
 	.set_voltage		= max8997_set_voltage_ldobuck,
-	.set_voltage_time_sel	= max8997_set_voltage_ldobuck_time_sel,
 	.set_suspend_disable	= max8997_reg_disable_suspend,
 };
 
@@ -810,7 +767,7 @@ static struct regulator_ops max8997_buck_ops = {
 	.disable		= max8997_reg_disable,
 	.get_voltage_sel	= max8997_get_voltage_sel,
 	.set_voltage		= max8997_set_voltage_buck,
-	.set_voltage_time_sel	= max8997_set_voltage_ldobuck_time_sel,
+	.set_voltage_time_sel	= max8997_set_voltage_buck_time_sel,
 	.set_suspend_disable	= max8997_reg_disable_suspend,
 };
 
@@ -823,12 +780,12 @@ static struct regulator_ops max8997_fixedvolt_ops = {
 };
 
 static struct regulator_ops max8997_safeout_ops = {
-	.list_voltage		= max8997_list_voltage_safeout,
+	.list_voltage		= regulator_list_voltage_table,
 	.is_enabled		= max8997_reg_is_enabled,
 	.enable			= max8997_reg_enable,
 	.disable		= max8997_reg_disable,
 	.get_voltage_sel	= max8997_get_voltage_sel,
-	.set_voltage		= max8997_set_voltage_safeout,
+	.set_voltage_sel	= max8997_set_voltage_safeout_sel,
 	.set_suspend_disable	= max8997_reg_disable_suspend,
 };
 
@@ -960,7 +917,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
 	struct max8997_regulator_data *rdata;
 	unsigned int i, dvs_voltage_nr = 1, ret;
 
-	pmic_np = iodev->dev->of_node;
+	pmic_np = of_node_get(iodev->dev->of_node);
 	if (!pmic_np) {
 		dev_err(&pdev->dev, "could not find pmic sub-node\n");
 		return -ENODEV;
@@ -973,13 +930,12 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
 	}
 
 	/* count the number of regulators to be supported in pmic */
-	pdata->num_regulators = 0;
-	for_each_child_of_node(regulators_np, reg_np)
-		pdata->num_regulators++;
+	pdata->num_regulators = of_get_child_count(regulators_np);
 
 	rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
 				pdata->num_regulators, GFP_KERNEL);
 	if (!rdata) {
+		of_node_put(regulators_np);
 		dev_err(&pdev->dev, "could not allocate memory for regulator data\n");
 		return -ENOMEM;
 	}
@@ -1002,6 +958,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
 		rdata->reg_node = reg_np;
 		rdata++;
 	}
+	of_node_put(regulators_np);
 
 	if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL))
 		pdata->buck1_gpiodvs = true;
@@ -1233,13 +1190,15 @@ static int max8997_pmic_probe(struct platform_device *pdev)
 		int id = pdata->regulators[i].id;
 
 		desc = reg_voltage_map[id];
-		if (desc)
+		if (desc) {
 			regulators[id].n_voltages =
 				(desc->max - desc->min) / desc->step + 1;
-		else if (id == MAX8997_ESAFEOUT1 || id == MAX8997_ESAFEOUT2)
-			regulators[id].n_voltages = 4;
-		else if (id == MAX8997_CHARGER_CV)
+		} else if (id == MAX8997_ESAFEOUT1 || id == MAX8997_ESAFEOUT2) {
+			regulators[id].volt_table = safeoutvolt;
+			regulators[id].n_voltages = ARRAY_SIZE(safeoutvolt);
+		} else if (id == MAX8997_CHARGER_CV) {
 			regulators[id].n_voltages = 16;
+		}
 
 		config.dev = max8997->dev;
 		config.init_data = pdata->regulators[i].initdata;

drivers/regulator/max8998.c

@@ -311,25 +311,13 @@ static int max8998_set_voltage_buck_sel(struct regulator_dev *rdev,
 		dev_get_platdata(max8998->iodev->dev);
 	struct i2c_client *i2c = max8998->iodev->i2c;
 	int buck = rdev_get_id(rdev);
-	int reg, shift = 0, mask, ret;
-	int j, previous_sel;
+	int reg, shift = 0, mask, ret, j;
 	static u8 buck1_last_val;
 
 	ret = max8998_get_voltage_register(rdev, &reg, &shift, &mask);
 	if (ret)
 		return ret;
 
-	previous_sel = max8998_get_voltage_sel(rdev);
-
-	/* Check if voltage needs to be changed */
-	/* if previous_voltage equal new voltage, return */
-	if (previous_sel == selector) {
-		dev_dbg(max8998->dev, "No voltage change, old:%d, new:%d\n",
-			regulator_list_voltage_linear(rdev, previous_sel),
-			regulator_list_voltage_linear(rdev, selector));
-		return ret;
-	}
-
 	switch (buck) {
 	case MAX8998_BUCK1:
 		dev_dbg(max8998->dev,

drivers/regulator/mc13892-regulator.c

@@ -164,6 +164,14 @@ static const unsigned int mc13892_sw1[] = {
 	1350000, 1375000
 };
 
+/*
+ * Note: this table is used to derive SWxVSEL by index into
+ * the array. Offset the values by the index of 1100000uV
+ * to get the actual register value for that voltage selector
+ * if the HI bit is to be set as well.
+ */
+#define MC13892_SWxHI_SEL_OFFSET		20
+
 static const unsigned int mc13892_sw[] = {
 	600000,   625000,  650000,  675000,  700000,  725000,
 	750000,   775000,  800000,  825000,  850000,  875000,
@@ -239,7 +247,6 @@ static const unsigned int mc13892_pwgtdrv[] = {
 };
 
 static struct regulator_ops mc13892_gpo_regulator_ops;
-/* sw regulators need special care due to the "hi bit" */
 static struct regulator_ops mc13892_sw_regulator_ops;
 
 
@@ -396,7 +403,7 @@ static int mc13892_sw_regulator_get_voltage_sel(struct regulator_dev *rdev)
 {
 	struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
 	int ret, id = rdev_get_id(rdev);
-	unsigned int val;
+	unsigned int val, selector;
 
 	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
 
@@ -407,12 +414,28 @@ static int mc13892_sw_regulator_get_voltage_sel(struct regulator_dev *rdev)
 	if (ret)
 		return ret;
 
-	val = (val & mc13892_regulators[id].vsel_mask)
-		>> mc13892_regulators[id].vsel_shift;
+	/*
+	 * Figure out if the HI bit is set inside the switcher mode register
+	 * since this means the selector value we return is at a different
+	 * offset into the selector table.
+	 *
+	 * According to the MC13892 documentation note 59 (Table 47) the SW1
+	 * buck switcher does not support output range programming therefore
+	 * the HI bit must always remain 0. So do not do anything strange if
+	 * our register is MC13892_SWITCHERS0.
+	 */
 
-	dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
+	selector = val & mc13892_regulators[id].vsel_mask;
+
+	if ((mc13892_regulators[id].vsel_reg != MC13892_SWITCHERS0) &&
+	    (val & MC13892_SWITCHERS0_SWxHI)) {
+		selector += MC13892_SWxHI_SEL_OFFSET;
+	}
 
-	return val;
+	dev_dbg(rdev_get_dev(rdev), "%s id: %d val: 0x%08x selector: %d\n",
+			__func__, id, val, selector);
+
+	return selector;
 }
 
 static int mc13892_sw_regulator_set_voltage_sel(struct regulator_dev *rdev,
@@ -425,18 +448,35 @@ static int mc13892_sw_regulator_set_voltage_sel(struct regulator_dev *rdev,
 
 	volt = rdev->desc->volt_table[selector];
 	mask = mc13892_regulators[id].vsel_mask;
-	reg_value = selector << mc13892_regulators[id].vsel_shift;
+	reg_value = selector;
 
+	/*
+	 * Don't mess with the HI bit or support HI voltage offsets for SW1.
+	 *
+	 * Since the get_voltage_sel callback has given a fudged value for
+	 * the selector offset, we need to back out that offset if HI is
+	 * to be set so we write the correct value to the register.
+	 *
+	 * The HI bit addition and selector offset handling COULD be more
+	 * complicated by shifting and masking off the voltage selector part
+	 * of the register then logical OR it back in, but since the selector
+	 * is at bits 4:0 there is very little point. This makes the whole
+	 * thing more readable and we do far less work.
+	 */
+
+	if (mc13892_regulators[id].vsel_reg != MC13892_SWITCHERS0) {
 		if (volt > 1375000) {
-		mask |= MC13892_SWITCHERS0_SWxHI;
+			reg_value -= MC13892_SWxHI_SEL_OFFSET;
 			reg_value |= MC13892_SWITCHERS0_SWxHI;
-	} else if (volt < 1100000) {
 			mask |= MC13892_SWITCHERS0_SWxHI;
+		} else if (volt < 1100000) {
 			reg_value &= ~MC13892_SWITCHERS0_SWxHI;
+			mask |= MC13892_SWITCHERS0_SWxHI;
+		}
 	}
 
 	mc13xxx_lock(priv->mc13xxx);
-	ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13892_regulators[id].reg, mask,
+	ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13892_regulators[id].vsel_reg, mask,
 			      reg_value);
 	mc13xxx_unlock(priv->mc13xxx);
 
@@ -495,15 +535,18 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
 	struct mc13xxx_regulator_init_data *mc13xxx_data;
 	struct regulator_config config = { };
 	int i, ret;
-	int num_regulators = 0;
+	int num_regulators = 0, num_parsed;
 	u32 val;
 
 	num_regulators = mc13xxx_get_num_regulators_dt(pdev);
+
 	if (num_regulators <= 0 && pdata)
 		num_regulators = pdata->num_regulators;
 	if (num_regulators <= 0)
 		return -EINVAL;
 
+	num_parsed = num_regulators;
+
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv) +
 		num_regulators * sizeof(priv->regulators[0]),
 		GFP_KERNEL);
@@ -520,7 +563,7 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_unlock;
 
-	/* enable switch auto mode */
+	/* enable switch auto mode (on 2.0A silicon only) */
 	if ((val & 0x0000FFFF) == 0x45d0) {
 		ret = mc13xxx_reg_rmw(mc13892, MC13892_SWITCHERS4,
 			MC13892_SWITCHERS4_SW1MODE_M |
@@ -546,7 +589,39 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
 		= mc13892_vcam_get_mode;
 
 	mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators,
-					ARRAY_SIZE(mc13892_regulators));
+					ARRAY_SIZE(mc13892_regulators),
+					&num_parsed);
+
+	/*
+	 * Perform a little sanity check on the regulator tree - if we found
+	 * a number of regulators from mc13xxx_get_num_regulators_dt and
+	 * then parsed a smaller number in mc13xxx_parse_regulators_dt then
+	 * there is a regulator defined in the regulators node which has
+	 * not matched any usable regulator in the driver. In this case,
+	 * there is one missing and what will happen is the first regulator
+	 * will get registered again.
+	 *
+	 * Fix this by basically making our number of registerable regulators
+	 * equal to the number of regulators we parsed. We are allocating
+	 * too much memory for priv, but this is unavoidable at this point.
+	 *
+	 * As an example of how this can happen, try making a typo in your
+	 * regulators node (vviohi {} instead of viohi {}) so that the name
+	 * does not match..
+	 *
+	 * The check will basically pass for platform data (non-DT) because
+	 * mc13xxx_parse_regulators_dt for !CONFIG_OF will not touch num_parsed.
+	 *
+	 */
+	if (num_parsed != num_regulators) {
+		dev_warn(&pdev->dev,
+		"parsed %d != regulators %d - check your device tree!\n",
+			num_parsed, num_regulators);
+
+		num_regulators = num_parsed;
+		priv->num_regulators = num_regulators;
+	}
+
 	for (i = 0; i < num_regulators; i++) {
 		struct regulator_init_data *init_data;
 		struct regulator_desc *desc;

drivers/regulator/mc13xxx-regulator-core.c

@@ -164,29 +164,30 @@ EXPORT_SYMBOL_GPL(mc13xxx_fixed_regulator_ops);
 #ifdef CONFIG_OF
 int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
 {
-	struct device_node *parent, *child;
-	int num = 0;
+	struct device_node *parent;
+	int num;
 
 	of_node_get(pdev->dev.parent->of_node);
 	parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
 	if (!parent)
 		return -ENODEV;
 
-	for_each_child_of_node(parent, child)
-		num++;
-
+	num = of_get_child_count(parent);
+	of_node_put(parent);
 	return num;
 }
 EXPORT_SYMBOL_GPL(mc13xxx_get_num_regulators_dt);
 
 struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
 	struct platform_device *pdev, struct mc13xxx_regulator *regulators,
-	int num_regulators)
+	int num_regulators, int *num_parsed)
 {
 	struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
 	struct mc13xxx_regulator_init_data *data, *p;
 	struct device_node *parent, *child;
-	int i;
+	int i, parsed = 0;
+
+	*num_parsed = 0;
 
 	of_node_get(pdev->dev.parent->of_node);
 	parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
@@ -195,24 +196,32 @@ struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
 
 	data = devm_kzalloc(&pdev->dev, sizeof(*data) * priv->num_regulators,
 			    GFP_KERNEL);
-	if (!data)
+	if (!data) {
+		of_node_put(parent);
 		return NULL;
+	}
+
 	p = data;
 
 	for_each_child_of_node(parent, child) {
 		for (i = 0; i < num_regulators; i++) {
 			if (!of_node_cmp(child->name,
 					 regulators[i].desc.name)) {
+
 				p->id = i;
 				p->init_data = of_get_regulator_init_data(
 							&pdev->dev, child);
 				p->node = child;
 				p++;
+
+				parsed++;
 				break;
 			}
 		}
 	}
+	of_node_put(parent);
 
+	*num_parsed = parsed;
 	return data;
 }
 EXPORT_SYMBOL_GPL(mc13xxx_parse_regulators_dt);

drivers/regulator/mc13xxx.h

@@ -39,7 +39,7 @@ extern int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev,
 extern int mc13xxx_get_num_regulators_dt(struct platform_device *pdev);
 extern struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
 	struct platform_device *pdev, struct mc13xxx_regulator *regulators,
-	int num_regulators);
+	int num_regulators, int *num_parsed);
 #else
 static inline int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
 {
@@ -48,7 +48,7 @@ static inline int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
 
 static inline struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
 	struct platform_device *pdev, struct mc13xxx_regulator *regulators,
-	int num_regulators)
+	int num_regulators, int *num_parsed)
 {
 	return NULL;
 }

drivers/regulator/palmas-regulator.c

@@ -527,6 +527,7 @@ static void palmas_dt_to_pdata(struct device *dev,
 	u32 prop;
 	int idx, ret;
 
+	node = of_node_get(node);
 	regulators = of_find_node_by_name(node, "regulators");
 	if (!regulators) {
 		dev_info(dev, "regulator node not found\n");
@@ -535,6 +536,7 @@ static void palmas_dt_to_pdata(struct device *dev,
 
 	ret = of_regulator_match(dev, regulators, palmas_matches,
 			PALMAS_NUM_REGS);
+	of_node_put(regulators);
 	if (ret < 0) {
 		dev_err(dev, "Error parsing regulator init data: %d\n", ret);
 		return;
@@ -565,11 +567,6 @@ static void palmas_dt_to_pdata(struct device *dev,
 		if (!ret)
 			pdata->reg_init[idx]->mode_sleep = prop;
 
-		ret = of_property_read_u32(palmas_matches[idx].of_node,
-				"ti,warm_reset", &prop);
-		if (!ret)
-			pdata->reg_init[idx]->warm_reset = prop;
-
 		ret = of_property_read_u32(palmas_matches[idx].of_node,
 				"ti,tstep", &prop);
 		if (!ret)

drivers/regulator/tps51632-regulator.c

@@ -28,10 +28,13 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.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/regulator/tps51632-regulator.h>
 #include <linux/slab.h>
 
@@ -85,49 +88,8 @@ struct tps51632_chip {
 	struct regulator_desc desc;
 	struct regulator_dev *rdev;
 	struct regmap *regmap;
-	bool enable_pwm_dvfs;
 };
 
-static int tps51632_dcdc_get_voltage_sel(struct regulator_dev *rdev)
-{
-	struct tps51632_chip *tps = rdev_get_drvdata(rdev);
-	unsigned int data;
-	int ret;
-	unsigned int reg = TPS51632_VOLTAGE_SELECT_REG;
-	int vsel;
-
-	if (tps->enable_pwm_dvfs)
-		reg = TPS51632_VOLTAGE_BASE_REG;
-
-	ret = regmap_read(tps->regmap, reg, &data);
-	if (ret < 0) {
-		dev_err(tps->dev, "reg read failed, err %d\n", ret);
-		return ret;
-	}
-
-	vsel = data & TPS51632_VOUT_MASK;
-	return vsel;
-}
-
-static int tps51632_dcdc_set_voltage_sel(struct regulator_dev *rdev,
-		unsigned selector)
-{
-	struct tps51632_chip *tps = rdev_get_drvdata(rdev);
-	int ret;
-	unsigned int reg = TPS51632_VOLTAGE_SELECT_REG;
-
-	if (tps->enable_pwm_dvfs)
-		reg = TPS51632_VOLTAGE_BASE_REG;
-
-	if (selector > TPS51632_MAX_VSEL)
-		return -EINVAL;
-
-	ret = regmap_write(tps->regmap, reg, selector);
-	if (ret < 0)
-		dev_err(tps->dev, "reg write failed, err %d\n", ret);
-	return ret;
-}
-
 static int tps51632_dcdc_set_ramp_delay(struct regulator_dev *rdev,
 		int ramp_delay)
 {
@@ -144,8 +106,8 @@ static int tps51632_dcdc_set_ramp_delay(struct regulator_dev *rdev,
 }
 
 static struct regulator_ops tps51632_dcdc_ops = {
-	.get_voltage_sel	= tps51632_dcdc_get_voltage_sel,
-	.set_voltage_sel	= tps51632_dcdc_set_voltage_sel,
+	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
+	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_linear,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
 	.set_ramp_delay		= tps51632_dcdc_set_ramp_delay,
@@ -162,7 +124,6 @@ static int tps51632_init_dcdc(struct tps51632_chip *tps,
 		goto skip_pwm_config;
 
 	control |= TPS51632_DVFS_PWMEN;
-	tps->enable_pwm_dvfs = pdata->enable_pwm_dvfs;
 	vsel = TPS51632_VOLT_VSEL(pdata->base_voltage_uV);
 	ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_BASE_REG, vsel);
 	if (ret < 0) {
@@ -205,22 +166,96 @@ static int tps51632_init_dcdc(struct tps51632_chip *tps,
 	return ret;
 }
 
-static bool rd_wr_reg(struct device *dev, unsigned int reg)
+static bool is_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TPS51632_OFFSET_REG:
+	case TPS51632_FAULT_REG:
+	case TPS51632_IMON_REG:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool is_read_reg(struct device *dev, unsigned int reg)
 {
-	if ((reg >= 0x8) && (reg <= 0x10))
+	switch (reg) {
+	case 0x08 ... 0x0F:
 		return false;
+	default:
 		return true;
+	}
+}
+
+static bool is_write_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TPS51632_VOLTAGE_SELECT_REG:
+	case TPS51632_VOLTAGE_BASE_REG:
+	case TPS51632_VMAX_REG:
+	case TPS51632_DVFS_CONTROL_REG:
+	case TPS51632_POWER_STATE_REG:
+	case TPS51632_SLEW_REGS:
+		return true;
+	default:
+		return false;
+	}
 }
 
 static const struct regmap_config tps51632_regmap_config = {
 	.reg_bits		= 8,
 	.val_bits		= 8,
-	.writeable_reg		= rd_wr_reg,
-	.readable_reg		= rd_wr_reg,
+	.writeable_reg		= is_write_reg,
+	.readable_reg		= is_read_reg,
+	.volatile_reg		= is_volatile_reg,
 	.max_register		= TPS51632_MAX_REG - 1,
 	.cache_type		= REGCACHE_RBTREE,
 };
 
+#if defined(CONFIG_OF)
+static const struct of_device_id tps51632_of_match[] = {
+	{ .compatible = "ti,tps51632",},
+	{},
+};
+MODULE_DEVICE_TABLE(of, tps51632_of_match);
+
+static struct tps51632_regulator_platform_data *
+	of_get_tps51632_platform_data(struct device *dev)
+{
+	struct tps51632_regulator_platform_data *pdata;
+	struct device_node *np = dev->of_node;
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		dev_err(dev, "Memory alloc failed for platform data\n");
+		return NULL;
+	}
+
+	pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node);
+	if (!pdata->reg_init_data) {
+		dev_err(dev, "Not able to get OF regulator init data\n");
+		return NULL;
+	}
+
+	pdata->enable_pwm_dvfs =
+			of_property_read_bool(np, "ti,enable-pwm-dvfs");
+	pdata->dvfs_step_20mV = of_property_read_bool(np, "ti,dvfs-step-20mV");
+
+	pdata->base_voltage_uV = pdata->reg_init_data->constraints.min_uV ? :
+					TPS51632_MIN_VOLATGE;
+	pdata->max_voltage_uV = pdata->reg_init_data->constraints.max_uV ? :
+					TPS51632_MAX_VOLATGE;
+	return pdata;
+}
+#else
+static struct tps51632_regulator_platform_data *
+	of_get_tps51632_platform_data(struct device *dev)
+{
+	return NULL;
+}
+#endif
+
 static int tps51632_probe(struct i2c_client *client,
 				const struct i2c_device_id *id)
 {
@@ -230,7 +265,19 @@ static int tps51632_probe(struct i2c_client *client,
 	int ret;
 	struct regulator_config config = { };
 
+	if (client->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_device(of_match_ptr(tps51632_of_match),
+				&client->dev);
+		if (!match) {
+			dev_err(&client->dev, "Error: No device match found\n");
+			return -ENODEV;
+		}
+	}
+
 	pdata = client->dev.platform_data;
+	if (!pdata && client->dev.of_node)
+		pdata = of_get_tps51632_platform_data(&client->dev);
 	if (!pdata) {
 		dev_err(&client->dev, "No Platform data\n");
 		return -EINVAL;
@@ -269,6 +316,12 @@ static int tps51632_probe(struct i2c_client *client,
 	tps->desc.type = REGULATOR_VOLTAGE;
 	tps->desc.owner = THIS_MODULE;
 
+	if (pdata->enable_pwm_dvfs)
+		tps->desc.vsel_reg = TPS51632_VOLTAGE_BASE_REG;
+	else
+		tps->desc.vsel_reg = TPS51632_VOLTAGE_SELECT_REG;
+	tps->desc.vsel_mask = TPS51632_VOUT_MASK;
+
 	tps->regmap = devm_regmap_init_i2c(client, &tps51632_regmap_config);
 	if (IS_ERR(tps->regmap)) {
 		ret = PTR_ERR(tps->regmap);
@@ -319,6 +372,7 @@ static struct i2c_driver tps51632_i2c_driver = {
 	.driver = {
 		.name = "tps51632",
 		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(tps51632_of_match),
 	},
 	.probe = tps51632_probe,
 	.remove = tps51632_remove,

drivers/regulator/tps6507x-regulator.c

@@ -23,8 +23,10 @@
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/tps6507x.h>
+#include <linux/of.h>
 #include <linux/slab.h>
 #include <linux/mfd/tps6507x.h>
+#include <linux/regulator/of_regulator.h>
 
 /* DCDC's */
 #define TPS6507X_DCDC_1				0
@@ -356,6 +358,80 @@ static struct regulator_ops tps6507x_pmic_ops = {
 	.list_voltage = regulator_list_voltage_table,
 };
 
+#ifdef CONFIG_OF
+static struct of_regulator_match tps6507x_matches[] = {
+	{ .name = "VDCDC1"},
+	{ .name = "VDCDC2"},
+	{ .name = "VDCDC3"},
+	{ .name = "LDO1"},
+	{ .name = "LDO2"},
+};
+
+static struct tps6507x_board *tps6507x_parse_dt_reg_data(
+		struct platform_device *pdev,
+		struct of_regulator_match **tps6507x_reg_matches)
+{
+	struct tps6507x_board *tps_board;
+	struct device_node *np = pdev->dev.parent->of_node;
+	struct device_node *regulators;
+	struct of_regulator_match *matches;
+	static struct regulator_init_data *reg_data;
+	int idx = 0, count, ret;
+
+	tps_board = devm_kzalloc(&pdev->dev, sizeof(*tps_board),
+					GFP_KERNEL);
+	if (!tps_board) {
+		dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
+		return NULL;
+	}
+
+	regulators = of_find_node_by_name(np, "regulators");
+	if (!regulators) {
+		dev_err(&pdev->dev, "regulator node not found\n");
+		return NULL;
+	}
+
+	count = ARRAY_SIZE(tps6507x_matches);
+	matches = tps6507x_matches;
+
+	ret = of_regulator_match(&pdev->dev, regulators, matches, count);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
+			ret);
+		return NULL;
+	}
+
+	*tps6507x_reg_matches = matches;
+
+	reg_data = devm_kzalloc(&pdev->dev, (sizeof(struct regulator_init_data)
+					* TPS6507X_NUM_REGULATOR), GFP_KERNEL);
+	if (!reg_data) {
+		dev_err(&pdev->dev, "Failure to alloc init data for regulators.\n");
+		return NULL;
+	}
+
+	tps_board->tps6507x_pmic_init_data = reg_data;
+
+	for (idx = 0; idx < count; idx++) {
+		if (!matches[idx].init_data || !matches[idx].of_node)
+			continue;
+
+		memcpy(&reg_data[idx], matches[idx].init_data,
+				sizeof(struct regulator_init_data));
+
+	}
+
+	return tps_board;
+}
+#else
+static inline struct tps6507x_board *tps6507x_parse_dt_reg_data(
+			struct platform_device *pdev,
+			struct of_regulator_match **tps6507x_reg_matches)
+{
+	*tps6507x_reg_matches = NULL;
+	return NULL;
+}
+#endif
 static int tps6507x_pmic_probe(struct platform_device *pdev)
 {
 	struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
@@ -365,8 +441,10 @@ static int tps6507x_pmic_probe(struct platform_device *pdev)
 	struct regulator_dev *rdev;
 	struct tps6507x_pmic *tps;
 	struct tps6507x_board *tps_board;
+	struct of_regulator_match *tps6507x_reg_matches = NULL;
 	int i;
 	int error;
+	unsigned int prop;
 
 	/**
 	 * tps_board points to pmic related constants
@@ -374,6 +452,9 @@ static int tps6507x_pmic_probe(struct platform_device *pdev)
 	 */
 
 	tps_board = dev_get_platdata(tps6507x_dev->dev);
+	if (!tps_board && tps6507x_dev->dev->of_node)
+		tps_board = tps6507x_parse_dt_reg_data(pdev,
+						&tps6507x_reg_matches);
 	if (!tps_board)
 		return -EINVAL;
 
@@ -415,6 +496,17 @@ static int tps6507x_pmic_probe(struct platform_device *pdev)
 		config.init_data = init_data;
 		config.driver_data = tps;
 
+		if (tps6507x_reg_matches) {
+			error = of_property_read_u32(
+				tps6507x_reg_matches[i].of_node,
+					"ti,defdcdc_default", &prop);
+
+			if (!error)
+				tps->info[i]->defdcdc_default = prop;
+
+			config.of_node = tps6507x_reg_matches[i].of_node;
+		}
+
 		rdev = regulator_register(&tps->desc[i], &config);
 		if (IS_ERR(rdev)) {
 			dev_err(tps6507x_dev->dev,

drivers/regulator/tps65090-regulator.c

@@ -19,11 +19,13 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/gpio.h>
+#include <linux/of_gpio.h>
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
 #include <linux/mfd/tps65090.h>
 
 struct tps65090_regulator {
@@ -67,8 +69,8 @@ static struct regulator_desc tps65090_regulator_desc[] = {
 	tps65090_REG_DESC(FET5,  "infet5",  0x13, tps65090_reg_contol_ops),
 	tps65090_REG_DESC(FET6,  "infet6",  0x14, tps65090_reg_contol_ops),
 	tps65090_REG_DESC(FET7,  "infet7",  0x15, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(LDO1,  "vsys_l1", 0,    tps65090_ldo_ops),
-	tps65090_REG_DESC(LDO2,  "vsys_l2", 0,    tps65090_ldo_ops),
+	tps65090_REG_DESC(LDO1,  "vsys-l1", 0,    tps65090_ldo_ops),
+	tps65090_REG_DESC(LDO2,  "vsys-l2", 0,    tps65090_ldo_ops),
 };
 
 static inline bool is_dcdc(int id)
@@ -138,6 +140,92 @@ static void tps65090_configure_regulator_config(
 	}
 }
 
+#ifdef CONFIG_OF
+static struct of_regulator_match tps65090_matches[] = {
+	{ .name = "dcdc1", },
+	{ .name = "dcdc2", },
+	{ .name = "dcdc3", },
+	{ .name = "fet1",  },
+	{ .name = "fet2",  },
+	{ .name = "fet3",  },
+	{ .name = "fet4",  },
+	{ .name = "fet5",  },
+	{ .name = "fet6",  },
+	{ .name = "fet7",  },
+	{ .name = "ldo1",  },
+	{ .name = "ldo2",  },
+};
+
+static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
+		struct platform_device *pdev,
+		struct of_regulator_match **tps65090_reg_matches)
+{
+	struct tps65090_platform_data *tps65090_pdata;
+	struct device_node *np = pdev->dev.parent->of_node;
+	struct device_node *regulators;
+	int idx = 0, ret;
+	struct tps65090_regulator_plat_data *reg_pdata;
+
+	tps65090_pdata = devm_kzalloc(&pdev->dev, sizeof(*tps65090_pdata),
+				GFP_KERNEL);
+	if (!tps65090_pdata) {
+		dev_err(&pdev->dev, "Memory alloc for tps65090_pdata failed\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	reg_pdata = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX *
+				sizeof(*reg_pdata), GFP_KERNEL);
+	if (!reg_pdata) {
+		dev_err(&pdev->dev, "Memory alloc for reg_pdata failed\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	regulators = of_find_node_by_name(np, "regulators");
+	if (!regulators) {
+		dev_err(&pdev->dev, "regulator node not found\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	ret = of_regulator_match(&pdev->dev, regulators, tps65090_matches,
+			ARRAY_SIZE(tps65090_matches));
+	if (ret < 0) {
+		dev_err(&pdev->dev,
+			"Error parsing regulator init data: %d\n", ret);
+		return ERR_PTR(ret);
+	}
+
+	*tps65090_reg_matches = tps65090_matches;
+	for (idx = 0; idx < ARRAY_SIZE(tps65090_matches); idx++) {
+		struct regulator_init_data *ri_data;
+		struct tps65090_regulator_plat_data *rpdata;
+
+		rpdata = &reg_pdata[idx];
+		ri_data = tps65090_matches[idx].init_data;
+		if (!ri_data || !tps65090_matches[idx].of_node)
+			continue;
+
+		rpdata->reg_init_data = ri_data;
+		rpdata->enable_ext_control = of_property_read_bool(
+					tps65090_matches[idx].of_node,
+					"ti,enable-ext-control");
+		if (rpdata->enable_ext_control)
+			rpdata->gpio = of_get_named_gpio(np,
+					"dcdc-ext-control-gpios", 0);
+
+		tps65090_pdata->reg_pdata[idx] = rpdata;
+	}
+	return tps65090_pdata;
+}
+#else
+static inline struct tps65090_platform_data *tps65090_parse_dt_reg_data(
+			struct platform_device *pdev,
+			struct of_regulator_match **tps65090_reg_matches)
+{
+	*tps65090_reg_matches = NULL;
+	return NULL;
+}
+#endif
+
 static int tps65090_regulator_probe(struct platform_device *pdev)
 {
 	struct tps65090 *tps65090_mfd = dev_get_drvdata(pdev->dev.parent);
@@ -147,15 +235,19 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
 	struct tps65090_regulator_plat_data *tps_pdata;
 	struct tps65090_regulator *pmic;
 	struct tps65090_platform_data *tps65090_pdata;
+	struct of_regulator_match *tps65090_reg_matches = NULL;
 	int num;
 	int ret;
 
 	dev_dbg(&pdev->dev, "Probing regulator\n");
 
 	tps65090_pdata = dev_get_platdata(pdev->dev.parent);
-	if (!tps65090_pdata) {
+	if (!tps65090_pdata && tps65090_mfd->dev->of_node)
+		tps65090_pdata = tps65090_parse_dt_reg_data(pdev,
+					&tps65090_reg_matches);
+	if (IS_ERR_OR_NULL(tps65090_pdata)) {
 		dev_err(&pdev->dev, "Platform data missing\n");
-		return -EINVAL;
+		return tps65090_pdata ? PTR_ERR(tps65090_pdata) : -EINVAL;
 	}
 
 	pmic = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX * sizeof(*pmic),
@@ -192,13 +284,17 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
 			}
 		}
 
-		config.dev = &pdev->dev;
+		config.dev = pdev->dev.parent;
 		config.driver_data = ri;
 		config.regmap = tps65090_mfd->rmap;
 		if (tps_pdata)
 			config.init_data = tps_pdata->reg_init_data;
 		else
 			config.init_data = NULL;
+		if (tps65090_reg_matches)
+			config.of_node = tps65090_reg_matches[num].of_node;
+		else
+			config.of_node = NULL;
 
 		rdev = regulator_register(ri->desc, &config);
 		if (IS_ERR(rdev)) {

drivers/regulator/tps6586x-regulator.c

@@ -61,10 +61,6 @@ struct tps6586x_regulator {
 
 	int enable_bit[2];
 	int enable_reg[2];
-
-	/* for DVM regulators */
-	int go_reg;
-	int go_bit;
 };
 
 static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
@@ -72,37 +68,10 @@ static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
 	return rdev_get_dev(rdev)->parent;
 }
 
-static int tps6586x_set_voltage_sel(struct regulator_dev *rdev,
-				    unsigned selector)
-{
-	struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
-	struct device *parent = to_tps6586x_dev(rdev);
-	int ret, val, rid = rdev_get_id(rdev);
-	uint8_t mask;
-
-	val = selector << (ffs(rdev->desc->vsel_mask) - 1);
-	mask = rdev->desc->vsel_mask;
-
-	ret = tps6586x_update(parent, rdev->desc->vsel_reg, val, mask);
-	if (ret)
-		return ret;
-
-	/* Update go bit for DVM regulators */
-	switch (rid) {
-	case TPS6586X_ID_LDO_2:
-	case TPS6586X_ID_LDO_4:
-	case TPS6586X_ID_SM_0:
-	case TPS6586X_ID_SM_1:
-		ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
-		break;
-	}
-	return ret;
-}
-
 static struct regulator_ops tps6586x_regulator_ops = {
 	.list_voltage = regulator_list_voltage_table,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
-	.set_voltage_sel = tps6586x_set_voltage_sel,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 
 	.is_enabled = regulator_is_enabled_regmap,
 	.enable = regulator_enable_regmap,
@@ -142,7 +111,7 @@ static const unsigned int tps6586x_dvm_voltages[] = {
 };
 
 #define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits,	\
-			   ereg0, ebit0, ereg1, ebit1)			\
+			   ereg0, ebit0, ereg1, ebit1, goreg, gobit)	\
 	.desc	= {							\
 		.supply_name = _pin_name,				\
 		.name	= "REG-" #_id,					\
@@ -156,29 +125,26 @@ static const unsigned int tps6586x_dvm_voltages[] = {
 		.enable_mask = 1 << (ebit0),				\
 		.vsel_reg = TPS6586X_##vreg,				\
 		.vsel_mask = ((1 << (nbits)) - 1) << (shift),		\
+		.apply_reg = (goreg),				\
+		.apply_bit = (gobit),				\
 	},								\
 	.enable_reg[0]	= TPS6586X_SUPPLY##ereg0,			\
 	.enable_bit[0]	= (ebit0),					\
 	.enable_reg[1]	= TPS6586X_SUPPLY##ereg1,			\
 	.enable_bit[1]	= (ebit1),
 
-#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit)			\
-	.go_reg = TPS6586X_##goreg,					\
-	.go_bit = (gobit),
-
 #define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits,		\
 		     ereg0, ebit0, ereg1, ebit1)			\
 {									\
 	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits,	\
-			   ereg0, ebit0, ereg1, ebit1)			\
+			   ereg0, ebit0, ereg1, ebit1, 0, 0)		\
 }
 
 #define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits,		\
 		     ereg0, ebit0, ereg1, ebit1, goreg, gobit)		\
 {									\
 	TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits,	\
-			   ereg0, ebit0, ereg1, ebit1)			\
-	TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit)			\
+			   ereg0, ebit0, ereg1, ebit1, goreg, gobit)	\
 }
 
 #define TPS6586X_SYS_REGULATOR()					\
@@ -207,13 +173,13 @@ static struct tps6586x_regulator tps6586x_regulator[] = {
 	TPS6586X_LDO(SM_2, "vin-sm2", sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
 
 	TPS6586X_DVM(LDO_2, "vinldo23", dvm, LDO2BV1, 0, 5, ENA, 3,
-					ENB, 3, VCC2, 6),
+					ENB, 3, TPS6586X_VCC2, BIT(6)),
 	TPS6586X_DVM(LDO_4, "vinldo4", ldo4, LDO4V1, 0, 5, ENC, 3,
-					END, 3, VCC1, 6),
+					END, 3, TPS6586X_VCC1, BIT(6)),
 	TPS6586X_DVM(SM_0, "vin-sm0", dvm, SM0V1, 0, 5, ENA, 1,
-					ENB, 1, VCC1, 2),
+					ENB, 1, TPS6586X_VCC1, BIT(2)),
 	TPS6586X_DVM(SM_1, "vin-sm1", dvm, SM1V1, 0, 5, ENA, 0,
-					ENB, 0, VCC1, 0),
+					ENB, 0, TPS6586X_VCC1, BIT(0)),
 };
 
 /*

drivers/regulator/tps65910-regulator.c

@@ -964,8 +964,7 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
 {
 	struct tps65910_board *pmic_plat_data;
 	struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
-	struct device_node *np = pdev->dev.parent->of_node;
-	struct device_node *regulators;
+	struct device_node *np, *regulators;
 	struct of_regulator_match *matches;
 	unsigned int prop;
 	int idx = 0, ret, count;
@@ -978,6 +977,7 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
 		return NULL;
 	}
 
+	np = of_node_get(pdev->dev.parent->of_node);
 	regulators = of_find_node_by_name(np, "regulators");
 	if (!regulators) {
 		dev_err(&pdev->dev, "regulator node not found\n");
@@ -994,11 +994,13 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
 		matches = tps65911_matches;
 		break;
 	default:
+		of_node_put(regulators);
 		dev_err(&pdev->dev, "Invalid tps chip version\n");
 		return NULL;
 	}
 
 	ret = of_regulator_match(&pdev->dev, regulators, matches, count);
+	of_node_put(regulators);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
 			ret);

include/linux/mfd/samsung/core.h

@@ -26,6 +26,7 @@ enum sec_device_type {
 /**
  * struct sec_pmic_dev - s5m87xx master device for sub-drivers
  * @dev: master device of the chip (can be used to access platform data)
+ * @pdata: pointer to private data used to pass platform data to child
  * @i2c: i2c client private data for regulator
  * @rtc: i2c client private data for rtc
  * @iolock: mutex for serializing io access
@@ -39,6 +40,7 @@ enum sec_device_type {
  */
 struct sec_pmic_dev {
 	struct device *dev;
+	struct sec_platform_data *pdata;
 	struct regmap *regmap;
 	struct i2c_client *i2c;
 	struct i2c_client *rtc;
@@ -82,11 +84,11 @@ struct sec_platform_data {
 
 	int				buck_gpios[3];
 	int				buck_ds[3];
-	int				buck2_voltage[8];
+	unsigned int			buck2_voltage[8];
 	bool				buck2_gpiodvs;
-	int				buck3_voltage[8];
+	unsigned int			buck3_voltage[8];
 	bool				buck3_gpiodvs;
-	int				buck4_voltage[8];
+	unsigned int			buck4_voltage[8];
 	bool				buck4_gpiodvs;
 
 	int				buck_set1;
@@ -127,6 +129,7 @@ struct sec_platform_data {
 struct sec_regulator_data {
 	int				id;
 	struct regulator_init_data	*initdata;
+	struct device_node *reg_node;
 };
 
 /*
@@ -136,7 +139,7 @@ struct sec_regulator_data {
  */
 struct sec_opmode_data {
 	int id;
-	int mode;
+	unsigned int mode;
 };
 
 /*

include/linux/platform_data/lp8755.h

+/*
+ * LP8755 High Performance Power Management Unit Driver:System Interface Driver
+ *
+ *			Copyright (C) 2012 Texas Instruments
+ *
+ * Author: Daniel(Geon Si) Jeong <daniel.jeong@ti.com>
+ *             G.Shark Jeong <gshark.jeong@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef _LP8755_H
+#define _LP8755_H
+
+#include <linux/regulator/consumer.h>
+
+#define LP8755_NAME "lp8755-regulator"
+/*
+ *PWR FAULT : power fault detected
+ *OCP : over current protect activated
+ *OVP : over voltage protect activated
+ *TEMP_WARN : thermal warning
+ *TEMP_SHDN : thermal shutdonw detected
+ *I_LOAD : current measured
+ */
+#define LP8755_EVENT_PWR_FAULT REGULATOR_EVENT_FAIL
+#define LP8755_EVENT_OCP REGULATOR_EVENT_OVER_CURRENT
+#define LP8755_EVENT_OVP 0x10000
+#define LP8755_EVENT_TEMP_WARN 0x2000
+#define LP8755_EVENT_TEMP_SHDN REGULATOR_EVENT_OVER_TEMP
+#define LP8755_EVENT_I_LOAD	0x40000
+
+enum lp8755_bucks {
+	LP8755_BUCK0 = 0,
+	LP8755_BUCK1,
+	LP8755_BUCK2,
+	LP8755_BUCK3,
+	LP8755_BUCK4,
+	LP8755_BUCK5,
+	LP8755_BUCK_MAX,
+};
+
+/**
+ * multiphase configuration options
+ */
+enum lp8755_mphase_config {
+	MPHASE_CONF0,
+	MPHASE_CONF1,
+	MPHASE_CONF2,
+	MPHASE_CONF3,
+	MPHASE_CONF4,
+	MPHASE_CONF5,
+	MPHASE_CONF6,
+	MPHASE_CONF7,
+	MPHASE_CONF8,
+	MPHASE_CONF_MAX
+};
+
+/**
+ * struct lp8755_platform_data
+ * @mphase_type : Multiphase Switcher Configurations.
+ * @buck_data   : buck0~6 init voltage in uV
+ */
+struct lp8755_platform_data {
+	int mphase;
+	struct regulator_init_data *buck_data[LP8755_BUCK_MAX];
+};
+#endif

include/linux/regulator/driver.h

@@ -193,6 +193,10 @@ enum regulator_type {
  *
  * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_
  * @vsel_mask: Mask for register bitfield used for selector
+ * @apply_reg: Register for initiate voltage change on the output when
+ *                using regulator_set_voltage_sel_regmap
+ * @apply_bit: Register bitfield used for initiate voltage change on the
+ *                output when using regulator_set_voltage_sel_regmap
  * @enable_reg: Register for control when using regmap enable/disable ops
  * @enable_mask: Mask for control when using regmap enable/disable ops
  *
@@ -218,6 +222,8 @@ struct regulator_desc {
 
 	unsigned int vsel_reg;
 	unsigned int vsel_mask;
+	unsigned int apply_reg;
+	unsigned int apply_bit;
 	unsigned int enable_reg;
 	unsigned int enable_mask;
 	unsigned int bypass_reg;

sound/soc/codecs/wm5102.c

@@ -1152,6 +1152,8 @@ SND_SOC_DAPM_OUTPUT("SPKOUTRN"),
 SND_SOC_DAPM_OUTPUT("SPKOUTRP"),
 SND_SOC_DAPM_OUTPUT("SPKDAT1L"),
 SND_SOC_DAPM_OUTPUT("SPKDAT1R"),
+
+SND_SOC_DAPM_OUTPUT("MICSUPP"),
 };
 
 #define ARIZONA_MIXER_INPUT_ROUTES(name)	\
@@ -1364,6 +1366,8 @@ static const struct snd_soc_dapm_route wm5102_dapm_routes[] = {
 	{ "AEC Loopback", "SPKDAT1R", "OUT5R" },
 	{ "SPKDAT1L", NULL, "OUT5L" },
 	{ "SPKDAT1R", NULL, "OUT5R" },
+
+	{ "MICSUPP", NULL, "SYSCLK" },
 };
 
 static int wm5102_set_fll(struct snd_soc_codec *codec, int fll_id, int source,

sound/soc/codecs/wm5110.c

@@ -624,6 +624,8 @@ SND_SOC_DAPM_OUTPUT("SPKDAT1L"),
 SND_SOC_DAPM_OUTPUT("SPKDAT1R"),
 SND_SOC_DAPM_OUTPUT("SPKDAT2L"),
 SND_SOC_DAPM_OUTPUT("SPKDAT2R"),
+
+SND_SOC_DAPM_OUTPUT("MICSUPP"),
 };
 
 #define ARIZONA_MIXER_INPUT_ROUTES(name)	\
@@ -832,6 +834,8 @@ static const struct snd_soc_dapm_route wm5110_dapm_routes[] = {
 
 	{ "SPKDAT2L", NULL, "OUT6L" },
 	{ "SPKDAT2R", NULL, "OUT6R" },
+
+	{ "MICSUPP", NULL, "SYSCLK" },
 };
 
 static int wm5110_set_fll(struct snd_soc_codec *codec, int fll_id, int source,