Merge tag 'regulator-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "Another release, another set of regulator updates.  Not much of it is
  showing up in the code yet but there's been a lot of discussion going
  on about how to enhance the regulator API to work better with modern
  SoCs which have a microcontroller sitting between Linux and the
  hardware.

  I'm hopeful that'll start to come through into mainline for v4.2 but
  it's not quite there for v4.1 - what we do have (along with the usual
  small updates is) is:

   - work from Bjorn Andersson on refactoring the configuration of
     regulator loading interfaces to be useful for use with
     microcontrollers, the existing interfaces were never actually
     useful for anything as-is since nobody was willing to put enough
     data into public code.

   - a summary tree display in debugfs from Heiko Stübner.

   - support for act6000 regulators"

* tag 'regulator-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (34 commits)
  regulator: max8660: Handle empty regulator data
  regulator: output current-limit for all regulators in summary
  regulator: add a summary tree in debugfs
  regulator: qcom: Tidy up probe()
  regulator: qcom: Rework to single platform device
  regulator: qcom: Refactor of-parsing code
  regulator: qcom: Don't enable DRMS in driver
  regulator: max8660: fix assignment of pdata to data that becomes dead
  regulator: Defer lookup of supply to regulator_get
  mfd: max77693: Remove unused structures
  regulator: max77693: Let core parse DT and drop board files support
  regulator: Ensure unique regulator debugfs directory names
  regulator: stw481x: Remove unused fields from struct stw481x
  regulator: palmas: Add has_regen3 check for TPS659038
  regulator: constify of_device_id array
  regulator: fixes for regulator_set_optimum_mode name change
  regulator: Drop temporary regulator_set_optimum_mode wrapper
  usb: phy: phy-msm-usb: Rename regulator_set_optimum_mode
  usb: phy: ab8500-usb: Rename regulator_set_optimum_mode
  ufs: Rename of regulator_set_optimum_mode
  ...

Documentation/devicetree/bindings/regulator/act8865-regulator.txt

@@ -2,13 +2,35 @@ ACT88xx regulators
 -------------------
 
 Required properties:
-- compatible: "active-semi,act8846" or "active-semi,act8865"
+- compatible: "active-semi,act8846" or "active-semi,act8865" or "active-semi,act8600"
 - reg: I2C slave address
 
 Optional properties:
 - system-power-controller: Telling whether or not this pmic is controlling
   the system power. See Documentation/devicetree/bindings/power/power-controller.txt .
 
+Optional input supply properties:
+- for act8600:
+  - vp1-supply: The input supply for DCDC_REG1
+  - vp2-supply: The input supply for DCDC_REG2
+  - vp3-supply: The input supply for DCDC_REG3
+  - inl-supply: The input supply for LDO_REG5, LDO_REG6, LDO_REG7 and LDO_REG8
+  SUDCDC_REG4, LDO_REG9 and LDO_REG10 do not have separate supplies.
+- for act8846:
+  - vp1-supply: The input supply for REG1
+  - vp2-supply: The input supply for REG2
+  - vp3-supply: The input supply for REG3
+  - vp4-supply: The input supply for REG4
+  - inl1-supply: The input supply for REG5, REG6 and REG7
+  - inl2-supply: The input supply for REG8 and LDO_REG9
+  - inl3-supply: The input supply for REG10, REG11 and REG12
+- for act8865:
+  - vp1-supply: The input supply for DCDC_REG1
+  - vp2-supply: The input supply for DCDC_REG2
+  - vp3-supply: The input supply for DCDC_REG3
+  - inl45-supply: The input supply for LDO_REG1 and LDO_REG2
+  - inl67-supply: The input supply for LDO_REG3 and LDO_REG4
+
 Any standard regulator properties can be used to configure the single regulator.
 
 The valid names for regulators are:
@@ -16,6 +38,9 @@ The valid names for regulators are:
 	REG1, REG2, REG3, REG4, REG5, REG6, REG7, REG8, REG9, REG10, REG11, REG12
 	- for act8865:
 	DCDC_REG1, DCDC_REG2, DCDC_REG3, LDO_REG1, LDO_REG2, LDO_REG3, LDO_REG4.
+	- for act8600:
+	DCDC_REG1, DCDC_REG2, DCDC_REG3, SUDCDC_REG4, LDO_REG5, LDO_REG6, LDO_REG7,
+	LDO_REG8, LDO_REG9, LDO_REG10,
 
 Example:
 --------

Documentation/power/regulator/consumer.txt

@@ -137,7 +137,7 @@ Indirect operating mode control.
 Consumer drivers can request a change in their supply regulator operating mode
 by calling :-
 
-int regulator_set_optimum_mode(struct regulator *regulator, int load_uA);
+int regulator_set_load(struct regulator *regulator, int load_uA);
 
 This will cause the core to recalculate the total load on the regulator (based
 on all its consumers) and change operating mode (if necessary and permitted)

drivers/gpu/drm/msm/edp/edp_ctrl.c

@@ -332,7 +332,7 @@ static int edp_regulator_enable(struct edp_ctrl *ctrl)
 		goto vdda_set_fail;
 	}
 
-	ret = regulator_set_optimum_mode(ctrl->vdda_vreg, VDDA_UA_ON_LOAD);
+	ret = regulator_set_load(ctrl->vdda_vreg, VDDA_UA_ON_LOAD);
 	if (ret < 0) {
 		pr_err("%s: vdda_vreg set regulator mode failed.\n", __func__);
 		goto vdda_set_fail;
@@ -356,7 +356,7 @@ static int edp_regulator_enable(struct edp_ctrl *ctrl)
 lvl_enable_fail:
 	regulator_disable(ctrl->vdda_vreg);
 vdda_enable_fail:
-	regulator_set_optimum_mode(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD);
+	regulator_set_load(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD);
 vdda_set_fail:
 	return ret;
 }
@@ -365,7 +365,7 @@ static void edp_regulator_disable(struct edp_ctrl *ctrl)
 {
 	regulator_disable(ctrl->lvl_vreg);
 	regulator_disable(ctrl->vdda_vreg);
-	regulator_set_optimum_mode(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD);
+	regulator_set_load(ctrl->vdda_vreg, VDDA_UA_OFF_LOAD);
 }
 
 static int edp_gpio_config(struct edp_ctrl *ctrl)

drivers/phy/phy-qcom-ufs.c

@@ -346,10 +346,10 @@ int ufs_qcom_phy_cfg_vreg(struct phy *phy,
 			goto out;
 		}
 		uA_load = on ? vreg->max_uA : 0;
-		ret = regulator_set_optimum_mode(reg, uA_load);
+		ret = regulator_set_load(reg, uA_load);
 		if (ret >= 0) {
 			/*
-			 * regulator_set_optimum_mode() returns new regulator
+			 * regulator_set_load() returns new regulator
 			 * mode upon success.
 			 */
 			ret = 0;

drivers/regulator/act8865-regulator.c

@@ -28,6 +28,35 @@
 #include <linux/regulator/of_regulator.h>
 #include <linux/regmap.h>
 
+/*
+ * ACT8600 Global Register Map.
+ */
+#define ACT8600_SYS_MODE	0x00
+#define ACT8600_SYS_CTRL	0x01
+#define ACT8600_DCDC1_VSET	0x10
+#define ACT8600_DCDC1_CTRL	0x12
+#define ACT8600_DCDC2_VSET	0x20
+#define ACT8600_DCDC2_CTRL	0x22
+#define ACT8600_DCDC3_VSET	0x30
+#define ACT8600_DCDC3_CTRL	0x32
+#define ACT8600_SUDCDC4_VSET	0x40
+#define ACT8600_SUDCDC4_CTRL	0x41
+#define ACT8600_LDO5_VSET	0x50
+#define ACT8600_LDO5_CTRL	0x51
+#define ACT8600_LDO6_VSET	0x60
+#define ACT8600_LDO6_CTRL	0x61
+#define ACT8600_LDO7_VSET	0x70
+#define ACT8600_LDO7_CTRL	0x71
+#define ACT8600_LDO8_VSET	0x80
+#define ACT8600_LDO8_CTRL	0x81
+#define ACT8600_LDO910_CTRL	0x91
+#define ACT8600_APCH0		0xA1
+#define ACT8600_APCH1		0xA8
+#define ACT8600_APCH2		0xA9
+#define ACT8600_APCH_STAT	0xAA
+#define ACT8600_OTG0		0xB0
+#define ACT8600_OTG1		0xB2
+
 /*
  * ACT8846 Global Register Map.
  */
@@ -94,10 +123,15 @@
 #define	ACT8865_ENA		0x80	/* ON - [7] */
 #define	ACT8865_VSEL_MASK	0x3F	/* VSET - [5:0] */
 
+
+#define ACT8600_LDO10_ENA		0x40	/* ON - [6] */
+#define ACT8600_SUDCDC_VSEL_MASK	0xFF	/* SUDCDC VSET - [7:0] */
+
 /*
  * ACT8865 voltage number
  */
 #define	ACT8865_VOLTAGE_NUM	64
+#define ACT8600_SUDCDC_VOLTAGE_NUM	255
 
 struct act8865 {
 	struct regmap *regmap;
@@ -116,6 +150,13 @@ static const struct regulator_linear_range act8865_voltage_ranges[] = {
 	REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
 };
 
+static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
+	REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
+	REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
+	REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
+	REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
+};
+
 static struct regulator_ops act8865_ops = {
 	.list_voltage		= regulator_list_voltage_linear_range,
 	.map_voltage		= regulator_map_voltage_linear_range,
@@ -126,9 +167,16 @@ static struct regulator_ops act8865_ops = {
 	.is_enabled		= regulator_is_enabled_regmap,
 };
 
-#define ACT88xx_REG(_name, _family, _id, _vsel_reg)			\
+static struct regulator_ops act8865_ldo_ops = {
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.is_enabled		= regulator_is_enabled_regmap,
+};
+
+#define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply)		\
 	[_family##_ID_##_id] = {					\
 		.name			= _name,			\
+		.supply_name		= _supply,			\
 		.id			= _family##_ID_##_id,		\
 		.type			= REGULATOR_VOLTAGE,		\
 		.ops			= &act8865_ops,			\
@@ -142,33 +190,80 @@ static struct regulator_ops act8865_ops = {
 		.owner			= THIS_MODULE,			\
 	}
 
+static const struct regulator_desc act8600_regulators[] = {
+	ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
+	ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
+	ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
+	{
+		.name = "SUDCDC_REG4",
+		.id = ACT8600_ID_SUDCDC4,
+		.ops = &act8865_ops,
+		.type = REGULATOR_VOLTAGE,
+		.n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
+		.linear_ranges = act8600_sudcdc_voltage_ranges,
+		.n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
+		.vsel_reg = ACT8600_SUDCDC4_VSET,
+		.vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
+		.enable_reg = ACT8600_SUDCDC4_CTRL,
+		.enable_mask = ACT8865_ENA,
+		.owner = THIS_MODULE,
+	},
+	ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
+	ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
+	ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
+	ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
+	{
+		.name = "LDO_REG9",
+		.id = ACT8600_ID_LDO9,
+		.ops = &act8865_ldo_ops,
+		.type = REGULATOR_VOLTAGE,
+		.n_voltages = 1,
+		.fixed_uV = 1800000,
+		.enable_reg = ACT8600_LDO910_CTRL,
+		.enable_mask = ACT8865_ENA,
+		.owner = THIS_MODULE,
+	},
+	{
+		.name = "LDO_REG10",
+		.id = ACT8600_ID_LDO10,
+		.ops = &act8865_ldo_ops,
+		.type = REGULATOR_VOLTAGE,
+		.n_voltages = 1,
+		.fixed_uV = 1200000,
+		.enable_reg = ACT8600_LDO910_CTRL,
+		.enable_mask = ACT8600_LDO10_ENA,
+		.owner = THIS_MODULE,
+	},
+};
+
 static const struct regulator_desc act8846_regulators[] = {
-	ACT88xx_REG("REG1", ACT8846, REG1, VSET),
-	ACT88xx_REG("REG2", ACT8846, REG2, VSET0),
-	ACT88xx_REG("REG3", ACT8846, REG3, VSET0),
-	ACT88xx_REG("REG4", ACT8846, REG4, VSET0),
-	ACT88xx_REG("REG5", ACT8846, REG5, VSET),
-	ACT88xx_REG("REG6", ACT8846, REG6, VSET),
-	ACT88xx_REG("REG7", ACT8846, REG7, VSET),
-	ACT88xx_REG("REG8", ACT8846, REG8, VSET),
-	ACT88xx_REG("REG9", ACT8846, REG9, VSET),
-	ACT88xx_REG("REG10", ACT8846, REG10, VSET),
-	ACT88xx_REG("REG11", ACT8846, REG11, VSET),
-	ACT88xx_REG("REG12", ACT8846, REG12, VSET),
+	ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
+	ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
+	ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
+	ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
+	ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
+	ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
+	ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
+	ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
+	ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
+	ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
+	ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
+	ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
 };
 
 static const struct regulator_desc act8865_regulators[] = {
-	ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1),
-	ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1),
-	ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1),
-	ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET),
-	ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET),
-	ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET),
-	ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET),
+	ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
+	ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
+	ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
+	ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
+	ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
+	ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
+	ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
 };
 
 #ifdef CONFIG_OF
 static const struct of_device_id act8865_dt_ids[] = {
+	{ .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
 	{ .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
 	{ .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
 	{ }
@@ -200,6 +295,19 @@ static struct of_regulator_match act8865_matches[] = {
 	[ACT8865_ID_LDO4]	= { .name = "LDO_REG4"},
 };
 
+static struct of_regulator_match act8600_matches[] = {
+	[ACT8600_ID_DCDC1]	= { .name = "DCDC_REG1"},
+	[ACT8600_ID_DCDC2]	= { .name = "DCDC_REG2"},
+	[ACT8600_ID_DCDC3]	= { .name = "DCDC_REG3"},
+	[ACT8600_ID_SUDCDC4]	= { .name = "SUDCDC_REG4"},
+	[ACT8600_ID_LDO5]	= { .name = "LDO_REG5"},
+	[ACT8600_ID_LDO6]	= { .name = "LDO_REG6"},
+	[ACT8600_ID_LDO7]	= { .name = "LDO_REG7"},
+	[ACT8600_ID_LDO8]	= { .name = "LDO_REG8"},
+	[ACT8600_ID_LDO9]	= { .name = "LDO_REG9"},
+	[ACT8600_ID_LDO10]	= { .name = "LDO_REG10"},
+};
+
 static int act8865_pdata_from_dt(struct device *dev,
 				 struct device_node **of_node,
 				 struct act8865_platform_data *pdata,
@@ -217,6 +325,10 @@ static int act8865_pdata_from_dt(struct device *dev,
 	}
 
 	switch (type) {
+	case ACT8600:
+		matches = act8600_matches;
+		num_matches = ARRAY_SIZE(act8600_matches);
+		break;
 	case ACT8846:
 		matches = act8846_matches;
 		num_matches = ARRAY_SIZE(act8846_matches);
@@ -317,6 +429,12 @@ static int act8865_pmic_probe(struct i2c_client *client,
 	}
 
 	switch (type) {
+	case ACT8600:
+		regulators = act8600_regulators;
+		num_regulators = ARRAY_SIZE(act8600_regulators);
+		off_reg = -1;
+		off_mask = -1;
+		break;
 	case ACT8846:
 		regulators = act8846_regulators;
 		num_regulators = ARRAY_SIZE(act8846_regulators);
@@ -366,7 +484,7 @@ static int act8865_pmic_probe(struct i2c_client *client,
 	}
 
 	if (of_device_is_system_power_controller(dev->of_node)) {
-		if (!pm_power_off) {
+		if (!pm_power_off && (off_reg > 0)) {
 			act8865_i2c_client = client;
 			act8865->off_reg = off_reg;
 			act8865->off_mask = off_mask;
@@ -402,6 +520,7 @@ static int act8865_pmic_probe(struct i2c_client *client,
 }
 
 static const struct i2c_device_id act8865_ids[] = {
+	{ .name = "act8600", .driver_data = ACT8600 },
 	{ .name = "act8846", .driver_data = ACT8846 },
 	{ .name = "act8865", .driver_data = ACT8865 },
 	{ },

drivers/regulator/arizona-ldo1.c

@@ -282,6 +282,9 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
 		arizona->external_dcvdd = true;
 
 	ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config);
+
+	of_node_put(config.of_node);
+
 	if (IS_ERR(ldo1->regulator)) {
 		ret = PTR_ERR(ldo1->regulator);
 		dev_err(arizona->dev, "Failed to register LDO1 supply: %d\n",
@@ -289,8 +292,6 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	of_node_put(config.of_node);
-
 	platform_set_drvdata(pdev, ldo1);
 
 	return 0;

drivers/regulator/arizona-micsupp.c

@@ -284,6 +284,9 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
 	micsupp->regulator = devm_regulator_register(&pdev->dev,
 						     desc,
 						     &config);
+
+	of_node_put(config.of_node);
+
 	if (IS_ERR(micsupp->regulator)) {
 		ret = PTR_ERR(micsupp->regulator);
 		dev_err(arizona->dev, "Failed to register mic supply: %d\n",
@@ -291,8 +294,6 @@ static int arizona_micsupp_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	of_node_put(config.of_node);
-
 	platform_set_drvdata(pdev, micsupp);
 
 	return 0;

drivers/regulator/core.c

@@ -648,10 +648,12 @@ static int drms_uA_update(struct regulator_dev *rdev)
 	if (err < 0)
 		return 0;
 
-	if (!rdev->desc->ops->get_optimum_mode)
+	if (!rdev->desc->ops->get_optimum_mode &&
+	    !rdev->desc->ops->set_load)
 		return 0;
 
-	if (!rdev->desc->ops->set_mode)
+	if (!rdev->desc->ops->set_mode &&
+	    !rdev->desc->ops->set_load)
 		return -EINVAL;
 
 	/* get output voltage */
@@ -676,6 +678,12 @@ static int drms_uA_update(struct regulator_dev *rdev)
 	list_for_each_entry(sibling, &rdev->consumer_list, list)
 		current_uA += sibling->uA_load;
 
+	if (rdev->desc->ops->set_load) {
+		/* set the optimum mode for our new total regulator load */
+		err = rdev->desc->ops->set_load(rdev, current_uA);
+		if (err < 0)
+			rdev_err(rdev, "failed to set load %d\n", current_uA);
+	} else {
 		/* now get the optimum mode for our new total regulator load */
 		mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV,
 							 output_uV, current_uA);
@@ -691,6 +699,7 @@ static int drms_uA_update(struct regulator_dev *rdev)
 		err = rdev->desc->ops->set_mode(rdev, mode);
 		if (err < 0)
 			rdev_err(rdev, "failed to set optimum mode %x\n", mode);
+	}
 
 	return err;
 }
@@ -1316,6 +1325,54 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 	return NULL;
 }
 
+static int regulator_resolve_supply(struct regulator_dev *rdev)
+{
+	struct regulator_dev *r;
+	struct device *dev = rdev->dev.parent;
+	int ret;
+
+	/* No supply to resovle? */
+	if (!rdev->supply_name)
+		return 0;
+
+	/* Supply already resolved? */
+	if (rdev->supply)
+		return 0;
+
+	r = regulator_dev_lookup(dev, rdev->supply_name, &ret);
+	if (ret == -ENODEV) {
+		/*
+		 * No supply was specified for this regulator and
+		 * there will never be one.
+		 */
+		return 0;
+	}
+
+	if (!r) {
+		dev_err(dev, "Failed to resolve %s-supply for %s\n",
+			rdev->supply_name, rdev->desc->name);
+		return -EPROBE_DEFER;
+	}
+
+	/* Recursively resolve the supply of the supply */
+	ret = regulator_resolve_supply(r);
+	if (ret < 0)
+		return ret;
+
+	ret = set_supply(rdev, r);
+	if (ret < 0)
+		return ret;
+
+	/* Cascade always-on state to supply */
+	if (_regulator_is_enabled(rdev)) {
+		ret = regulator_enable(rdev->supply);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
 /* Internal regulator request function */
 static struct regulator *_regulator_get(struct device *dev, const char *id,
 					bool exclusive, bool allow_dummy)
@@ -1385,6 +1442,12 @@ static struct regulator *_regulator_get(struct device *dev, const char *id,
 		goto out;
 	}
 
+	ret = regulator_resolve_supply(rdev);
+	if (ret < 0) {
+		regulator = ERR_PTR(ret);
+		goto out;
+	}
+
 	if (!try_module_get(rdev->owner))
 		goto out;
 
@@ -2998,7 +3061,7 @@ unsigned int regulator_get_mode(struct regulator *regulator)
 EXPORT_SYMBOL_GPL(regulator_get_mode);
 
 /**
- * regulator_set_optimum_mode - set regulator optimum operating mode
+ * regulator_set_load - set regulator load
  * @regulator: regulator source
  * @uA_load: load current
  *
@@ -3021,9 +3084,9 @@ EXPORT_SYMBOL_GPL(regulator_get_mode);
  * DRMS will sum the total requested load on the regulator and change
  * to the most efficient operating mode if platform constraints allow.
  *
- * Returns the new regulator mode or error.
+ * On error a negative errno is returned.
  */
-int regulator_set_optimum_mode(struct regulator *regulator, int uA_load)
+int regulator_set_load(struct regulator *regulator, int uA_load)
 {
 	struct regulator_dev *rdev = regulator->rdev;
 	int ret;
@@ -3035,7 +3098,7 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(regulator_set_optimum_mode);
+EXPORT_SYMBOL_GPL(regulator_set_load);
 
 /**
  * regulator_allow_bypass - allow the regulator to go into bypass mode
@@ -3499,7 +3562,18 @@ static struct class regulator_class = {
 
 static void rdev_init_debugfs(struct regulator_dev *rdev)
 {
-	rdev->debugfs = debugfs_create_dir(rdev_get_name(rdev), debugfs_root);
+	struct device *parent = rdev->dev.parent;
+	const char *rname = rdev_get_name(rdev);
+	char name[NAME_MAX];
+
+	/* Avoid duplicate debugfs directory names */
+	if (parent && rname == rdev->desc->name) {
+		snprintf(name, sizeof(name), "%s-%s", dev_name(parent),
+			 rname);
+		rname = name;
+	}
+
+	rdev->debugfs = debugfs_create_dir(rname, debugfs_root);
 	if (!rdev->debugfs) {
 		rdev_warn(rdev, "Failed to create debugfs directory\n");
 		return;
@@ -3533,7 +3607,6 @@ regulator_register(const struct regulator_desc *regulator_desc,
 	struct regulator_dev *rdev;
 	struct device *dev;
 	int ret, i;
-	const char *supply = NULL;
 
 	if (regulator_desc == NULL || cfg == NULL)
 		return ERR_PTR(-EINVAL);
@@ -3641,41 +3714,10 @@ regulator_register(const struct regulator_desc *regulator_desc,
 		goto scrub;
 
 	if (init_data && init_data->supply_regulator)
-		supply = init_data->supply_regulator;
+		rdev->supply_name = init_data->supply_regulator;
 	else if (regulator_desc->supply_name)
-		supply = regulator_desc->supply_name;
-
-	if (supply) {
-		struct regulator_dev *r;
-
-		r = regulator_dev_lookup(dev, supply, &ret);
-
-		if (ret == -ENODEV) {
-			/*
-			 * No supply was specified for this regulator and
-			 * there will never be one.
-			 */
-			ret = 0;
-			goto add_dev;
-		} else if (!r) {
-			dev_err(dev, "Failed to find supply %s\n", supply);
-			ret = -EPROBE_DEFER;
-			goto scrub;
-		}
-
-		ret = set_supply(rdev, r);
-		if (ret < 0)
-			goto scrub;
-
-		/* Enable supply if rail is enabled */
-		if (_regulator_is_enabled(rdev)) {
-			ret = regulator_enable(rdev->supply);
-			if (ret < 0)
-				goto scrub;
-		}
-	}
+		rdev->supply_name = regulator_desc->supply_name;
 
-add_dev:
 	/* add consumers devices */
 	if (init_data) {
 		for (i = 0; i < init_data->num_consumer_supplies; i++) {
@@ -3702,8 +3744,6 @@ regulator_register(const struct regulator_desc *regulator_desc,
 	unset_regulator_supplies(rdev);
 
 scrub:
-	if (rdev->supply)
-		_regulator_put(rdev->supply);
 	regulator_ena_gpio_free(rdev);
 	kfree(rdev->constraints);
 wash:
@@ -3936,6 +3976,110 @@ static const struct file_operations supply_map_fops = {
 #endif
 };
 
+#ifdef CONFIG_DEBUG_FS
+static void regulator_summary_show_subtree(struct seq_file *s,
+					   struct regulator_dev *rdev,
+					   int level)
+{
+	struct list_head *list = s->private;
+	struct regulator_dev *child;
+	struct regulation_constraints *c;
+	struct regulator *consumer;
+
+	if (!rdev)
+		return;
+
+	seq_printf(s, "%*s%-*s %3d %4d %6d ",
+		   level * 3 + 1, "",
+		   30 - level * 3, rdev_get_name(rdev),
+		   rdev->use_count, rdev->open_count, rdev->bypass_count);
+
+	seq_printf(s, "%5dmV ", _regulator_get_voltage(rdev) / 1000);
+	seq_printf(s, "%5dmA ", _regulator_get_current_limit(rdev) / 1000);
+
+	c = rdev->constraints;
+	if (c) {
+		switch (rdev->desc->type) {
+		case REGULATOR_VOLTAGE:
+			seq_printf(s, "%5dmV %5dmV ",
+				   c->min_uV / 1000, c->max_uV / 1000);
+			break;
+		case REGULATOR_CURRENT:
+			seq_printf(s, "%5dmA %5dmA ",
+				   c->min_uA / 1000, c->max_uA / 1000);
+			break;
+		}
+	}
+
+	seq_puts(s, "\n");
+
+	list_for_each_entry(consumer, &rdev->consumer_list, list) {
+		if (consumer->dev->class == &regulator_class)
+			continue;
+
+		seq_printf(s, "%*s%-*s ",
+			   (level + 1) * 3 + 1, "",
+			   30 - (level + 1) * 3, dev_name(consumer->dev));
+
+		switch (rdev->desc->type) {
+		case REGULATOR_VOLTAGE:
+			seq_printf(s, "%37dmV %5dmV",
+				   consumer->min_uV / 1000,
+				   consumer->max_uV / 1000);
+			break;
+		case REGULATOR_CURRENT:
+			break;
+		}
+
+		seq_puts(s, "\n");
+	}
+
+	list_for_each_entry(child, list, list) {
+		/* handle only non-root regulators supplied by current rdev */
+		if (!child->supply || child->supply->rdev != rdev)
+			continue;
+
+		regulator_summary_show_subtree(s, child, level + 1);
+	}
+}
+
+static int regulator_summary_show(struct seq_file *s, void *data)
+{
+	struct list_head *list = s->private;
+	struct regulator_dev *rdev;
+
+	seq_puts(s, " regulator                      use open bypass voltage current     min     max\n");
+	seq_puts(s, "-------------------------------------------------------------------------------\n");
+
+	mutex_lock(&regulator_list_mutex);
+
+	list_for_each_entry(rdev, list, list) {
+		if (rdev->supply)
+			continue;
+
+		regulator_summary_show_subtree(s, rdev, 0);
+	}
+
+	mutex_unlock(&regulator_list_mutex);
+
+	return 0;
+}
+
+static int regulator_summary_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, regulator_summary_show, inode->i_private);
+}
+#endif
+
+static const struct file_operations regulator_summary_fops = {
+#ifdef CONFIG_DEBUG_FS
+	.open		= regulator_summary_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+#endif
+};
+
 static int __init regulator_init(void)
 {
 	int ret;
@@ -3949,6 +4093,9 @@ static int __init regulator_init(void)
 	debugfs_create_file("supply_map", 0444, debugfs_root, NULL,
 			    &supply_map_fops);
 
+	debugfs_create_file("regulator_summary", 0444, debugfs_root,
+			    &regulator_list, &regulator_summary_fops);
+
 	regulator_dummy_init();
 
 	return ret;

drivers/regulator/da9211-regulator.c

@@ -305,8 +305,7 @@ static irqreturn_t da9211_irq_handler(int irq, void *data)
 
 	if (reg_val & DA9211_E_OV_CURR_A) {
 		regulator_notifier_call_chain(chip->rdev[0],
-			REGULATOR_EVENT_OVER_CURRENT,
-			rdev_get_drvdata(chip->rdev[0]));
+			REGULATOR_EVENT_OVER_CURRENT, NULL);
 
 		err = regmap_write(chip->regmap, DA9211_REG_EVENT_B,
 			DA9211_E_OV_CURR_A);
@@ -318,8 +317,7 @@ static irqreturn_t da9211_irq_handler(int irq, void *data)
 
 	if (reg_val & DA9211_E_OV_CURR_B) {
 		regulator_notifier_call_chain(chip->rdev[1],
-			REGULATOR_EVENT_OVER_CURRENT,
-			rdev_get_drvdata(chip->rdev[1]));
+			REGULATOR_EVENT_OVER_CURRENT, NULL);
 
 		err = regmap_write(chip->regmap, DA9211_REG_EVENT_B,
 			DA9211_E_OV_CURR_B);
@@ -344,7 +342,7 @@ static int da9211_regulator_init(struct da9211 *chip)
 
 	ret = regmap_read(chip->regmap, DA9211_REG_CONFIG_E, &data);
 	if (ret < 0) {
-		dev_err(chip->dev, "Failed to read CONTROL_E reg: %d\n", ret);
+		dev_err(chip->dev, "Failed to read CONFIG_E reg: %d\n", ret);
 		return ret;
 	}
 

drivers/regulator/dbx500-prcmu.c

@@ -95,14 +95,9 @@ void ux500_regulator_resume_debug(void)
 
 static int ux500_regulator_power_state_cnt_print(struct seq_file *s, void *p)
 {
-	struct device *dev = s->private;
-	int err;
-
 	/* print power state count */
-	err = seq_printf(s, "ux500-regulator power state count: %i\n",
+	seq_printf(s, "ux500-regulator power state count: %i\n",
 		   power_state_active_get());
-	if (err < 0)
-		dev_err(dev, "seq_printf overflow\n");
 
 	return 0;
 }
@@ -124,19 +119,11 @@ static const struct file_operations ux500_regulator_power_state_cnt_fops = {
 
 static int ux500_regulator_status_print(struct seq_file *s, void *p)
 {
-	struct device *dev = s->private;
-	int err;
 	int i;
 
 	/* print dump header */
-	err = seq_puts(s, "ux500-regulator status:\n");
-	if (err < 0)
-		dev_err(dev, "seq_puts overflow\n");
-
-	err = seq_printf(s, "%31s : %8s : %8s\n", "current",
-		"before", "after");
-	if (err < 0)
-		dev_err(dev, "seq_printf overflow\n");
+	seq_puts(s, "ux500-regulator status:\n");
+	seq_printf(s, "%31s : %8s : %8s\n", "current", "before", "after");
 
 	for (i = 0; i < rdebug.num_regulators; i++) {
 		struct dbx500_regulator_info *info;
@@ -144,12 +131,11 @@ static int ux500_regulator_status_print(struct seq_file *s, void *p)
 		info = &rdebug.regulator_array[i];
 
 		/* print status */
-		err = seq_printf(s, "%20s : %8s : %8s : %8s\n", info->desc.name,
+		seq_printf(s, "%20s : %8s : %8s : %8s\n",
+			   info->desc.name,
 			   info->is_enabled ? "enabled" : "disabled",
 			   rdebug.state_before_suspend[i] ? "enabled" : "disabled",
 			   rdebug.state_after_suspend[i] ? "enabled" : "disabled");
-		if (err < 0)
-			dev_err(dev, "seq_printf overflow\n");
 	}
 
 	return 0;

drivers/regulator/devres.c

@@ -413,3 +413,88 @@ void devm_regulator_bulk_unregister_supply_alias(struct device *dev,
 		devm_regulator_unregister_supply_alias(dev, id[i]);
 }
 EXPORT_SYMBOL_GPL(devm_regulator_bulk_unregister_supply_alias);
+
+struct regulator_notifier_match {
+	struct regulator *regulator;
+	struct notifier_block *nb;
+};
+
+static int devm_regulator_match_notifier(struct device *dev, void *res,
+					 void *data)
+{
+	struct regulator_notifier_match *match = res;
+	struct regulator_notifier_match *target = data;
+
+	return match->regulator == target->regulator && match->nb == target->nb;
+}
+
+static void devm_regulator_destroy_notifier(struct device *dev, void *res)
+{
+	struct regulator_notifier_match *match = res;
+
+	regulator_unregister_notifier(match->regulator, match->nb);
+}
+
+/**
+ * devm_regulator_register_notifier - Resource managed
+ * regulator_register_notifier
+ *
+ * @regulator: regulator source
+ * @nb: notifier block
+ *
+ * The notifier will be registers under the consumer device and be
+ * automatically be unregistered when the source device is unbound.
+ */
+int devm_regulator_register_notifier(struct regulator *regulator,
+				     struct notifier_block *nb)
+{
+	struct regulator_notifier_match *match;
+	int ret;
+
+	match = devres_alloc(devm_regulator_destroy_notifier,
+			     sizeof(struct regulator_notifier_match),
+			     GFP_KERNEL);
+	if (!match)
+		return -ENOMEM;
+
+	match->regulator = regulator;
+	match->nb = nb;
+
+	ret = regulator_register_notifier(regulator, nb);
+	if (ret < 0) {
+		devres_free(match);
+		return ret;
+	}
+
+	devres_add(regulator->dev, match);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_regulator_register_notifier);
+
+/**
+ * devm_regulator_unregister_notifier - Resource managed
+ * regulator_unregister_notifier()
+ *
+ * @regulator: regulator source
+ * @nb: notifier block
+ *
+ * Unregister a notifier registered with devm_regulator_register_notifier().
+ * Normally this function will not need to be called and the resource
+ * management code will ensure that the resource is freed.
+ */
+void devm_regulator_unregister_notifier(struct regulator *regulator,
+					struct notifier_block *nb)
+{
+	struct regulator_notifier_match match;
+	int rc;
+
+	match.regulator = regulator;
+	match.nb = nb;
+
+	rc = devres_release(regulator->dev, devm_regulator_destroy_notifier,
+			    devm_regulator_match_notifier, &match);
+	if (rc != 0)
+		WARN_ON(rc);
+}
+EXPORT_SYMBOL_GPL(devm_regulator_unregister_notifier);

drivers/regulator/max77693.c

@@ -128,6 +128,8 @@ static struct regulator_ops max77693_charger_ops = {
 #define regulator_desc_esafeout(_num)	{			\
 	.name		= "ESAFEOUT"#_num,			\
 	.id		= MAX77693_ESAFEOUT##_num,		\
+	.of_match	= of_match_ptr("ESAFEOUT"#_num),	\
+	.regulators_node	= of_match_ptr("regulators"),	\
 	.n_voltages	= 4,					\
 	.ops		= &max77693_safeout_ops,		\
 	.type		= REGULATOR_VOLTAGE,			\
@@ -145,6 +147,8 @@ static const struct regulator_desc regulators[] = {
 	{
 		.name = "CHARGER",
 		.id = MAX77693_CHARGER,
+		.of_match = of_match_ptr("CHARGER"),
+		.regulators_node = of_match_ptr("regulators"),
 		.ops = &max77693_charger_ops,
 		.type = REGULATOR_CURRENT,
 		.owner = THIS_MODULE,
@@ -154,102 +158,23 @@ static const struct regulator_desc regulators[] = {
 	},
 };
 
-#ifdef CONFIG_OF
-static int max77693_pmic_dt_parse_rdata(struct device *dev,
-					struct max77693_regulator_data **rdata)
-{
-	struct device_node *np;
-	struct of_regulator_match *rmatch;
-	struct max77693_regulator_data *tmp;
-	int i, matched = 0;
-
-	np = of_get_child_by_name(dev->parent->of_node, "regulators");
-	if (!np)
-		return -EINVAL;
-
-	rmatch = devm_kzalloc(dev,
-		 sizeof(*rmatch) * ARRAY_SIZE(regulators), GFP_KERNEL);
-	if (!rmatch) {
-		of_node_put(np);
-		return -ENOMEM;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(regulators); i++)
-		rmatch[i].name = regulators[i].name;
-
-	matched = of_regulator_match(dev, np, rmatch, ARRAY_SIZE(regulators));
-	of_node_put(np);
-	if (matched <= 0)
-		return matched;
-	*rdata = devm_kzalloc(dev, sizeof(**rdata) * matched, GFP_KERNEL);
-	if (!(*rdata))
-		return -ENOMEM;
-
-	tmp = *rdata;
-
-	for (i = 0; i < matched; i++) {
-		tmp->initdata = rmatch[i].init_data;
-		tmp->of_node = rmatch[i].of_node;
-		tmp->id = regulators[i].id;
-		tmp++;
-	}
-
-	return matched;
-}
-#else
-static int max77693_pmic_dt_parse_rdata(struct device *dev,
-					struct max77693_regulator_data **rdata)
-{
-	return 0;
-}
-#endif /* CONFIG_OF */
-
-static int max77693_pmic_init_rdata(struct device *dev,
-				    struct max77693_regulator_data **rdata)
-{
-	struct max77693_platform_data *pdata;
-	int num_regulators = 0;
-
-	pdata = dev_get_platdata(dev->parent);
-	if (pdata) {
-		*rdata = pdata->regulators;
-		num_regulators = pdata->num_regulators;
-	}
-
-	if (!(*rdata) && dev->parent->of_node)
-		num_regulators = max77693_pmic_dt_parse_rdata(dev, rdata);
-
-	return num_regulators;
-}
-
 static int max77693_pmic_probe(struct platform_device *pdev)
 {
 	struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
-	struct max77693_regulator_data *rdata = NULL;
-	int num_rdata, i;
+	int i;
 	struct regulator_config config = { };
 
-	num_rdata = max77693_pmic_init_rdata(&pdev->dev, &rdata);
-	if (!rdata || num_rdata <= 0) {
-		dev_err(&pdev->dev, "No init data supplied.\n");
-		return -ENODEV;
-	}
-
-	config.dev = &pdev->dev;
+	config.dev = iodev->dev;
 	config.regmap = iodev->regmap;
 
-	for (i = 0; i < num_rdata; i++) {
-		int id = rdata[i].id;
+	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 		struct regulator_dev *rdev;
 
-		config.init_data = rdata[i].initdata;
-		config.of_node = rdata[i].of_node;
-
 		rdev = devm_regulator_register(&pdev->dev,
-						&regulators[id], &config);
+						&regulators[i], &config);
 		if (IS_ERR(rdev)) {
 			dev_err(&pdev->dev,
-				"Failed to initialize regulator-%d\n", id);
+				"Failed to initialize regulator-%d\n", i);
 			return PTR_ERR(rdev);
 		}
 	}

drivers/regulator/max8660.c

@@ -382,7 +382,7 @@ static int max8660_probe(struct i2c_client *client,
 				   const struct i2c_device_id *i2c_id)
 {
 	struct device *dev = &client->dev;
-	struct max8660_platform_data *pdata = dev_get_platdata(dev);
+	struct max8660_platform_data pdata_of, *pdata = dev_get_platdata(dev);
 	struct regulator_config config = { };
 	struct max8660 *max8660;
 	int boot_on, i, id, ret = -EINVAL;
@@ -391,7 +391,6 @@ static int max8660_probe(struct i2c_client *client,
 
 	if (dev->of_node && !pdata) {
 		const struct of_device_id *id;
-		struct max8660_platform_data pdata_of;
 
 		id = of_match_device(of_match_ptr(max8660_dt_ids), dev);
 		if (!id)
@@ -443,8 +442,8 @@ static int max8660_probe(struct i2c_client *client,
 	for (i = 0; i < pdata->num_subdevs; i++) {
 
 		if (!pdata->subdevs[i].platform_data)
-			return ret;
-
+			boot_on = false;
+		else
 			boot_on = pdata->subdevs[i].platform_data->constraints.boot_on;
 
 		switch (pdata->subdevs[i].id) {

drivers/regulator/palmas-regulator.c

@@ -916,6 +916,9 @@ static int palmas_ldo_registration(struct palmas_pmic *pmic,
 			    (id == PALMAS_REG_LDO6))
 				desc->enable_time = 2000;
 		} else {
+			if (!ddata->has_regen3 && id == PALMAS_REG_REGEN3)
+				continue;
+
 			desc->n_voltages = 1;
 			if (reg_init && reg_init->roof_floor)
 				desc->ops = &palmas_ops_ext_control_extreg;
@@ -1398,6 +1401,7 @@ static struct palmas_pmic_driver_data palmas_ddata = {
 	.ldo_begin = PALMAS_REG_LDO1,
 	.ldo_end = PALMAS_REG_LDOUSB,
 	.max_reg = PALMAS_NUM_REGS,
+	.has_regen3 = true,
 	.palmas_regs_info = palmas_generic_regs_info,
 	.palmas_matches = palmas_matches,
 	.sleep_req_info = palma_sleep_req_info,
@@ -1411,6 +1415,7 @@ static struct palmas_pmic_driver_data tps65917_ddata = {
 	.ldo_begin = TPS65917_REG_LDO1,
 	.ldo_end = TPS65917_REG_LDO5,
 	.max_reg = TPS65917_NUM_REGS,
+	.has_regen3 = true,
 	.palmas_regs_info = tps65917_regs_info,
 	.palmas_matches = tps65917_matches,
 	.sleep_req_info = tps65917_sleep_req_info,
@@ -1505,7 +1510,7 @@ static void palmas_dt_to_pdata(struct device *dev,
 	pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
 }
 
-static struct of_device_id of_palmas_match_tbl[] = {
+static const struct of_device_id of_palmas_match_tbl[] = {
 	{
 		.compatible = "ti,palmas-pmic",
 		.data = &palmas_ddata,
@@ -1572,9 +1577,11 @@ static int palmas_regulators_probe(struct platform_device *pdev)
 	if (!pmic)
 		return -ENOMEM;
 
-	if (of_device_is_compatible(node, "ti,tps659038-pmic"))
+	if (of_device_is_compatible(node, "ti,tps659038-pmic")) {
 		palmas_generic_regs_info[PALMAS_REG_REGEN2].ctrl_addr =
 							TPS659038_REGEN2_CTRL;
+		palmas_ddata.has_regen3 = false;
+	}
 
 	pmic->dev = &pdev->dev;
 	pmic->palmas = palmas;

drivers/regulator/stw481x-vmmc.c

@@ -56,6 +56,7 @@ static int stw481x_vmmc_regulator_probe(struct platform_device *pdev)
 {
 	struct stw481x *stw481x = dev_get_platdata(&pdev->dev);
 	struct regulator_config config = { };
+	struct regulator_dev *rdev;
 	int ret;
 
 	/* First disable the external VMMC if it's active */
@@ -75,12 +76,11 @@ static int stw481x_vmmc_regulator_probe(struct platform_device *pdev)
 						      pdev->dev.of_node,
 						      &vmmc_regulator);
 
-	stw481x->vmmc_regulator = devm_regulator_register(&pdev->dev,
-						&vmmc_regulator, &config);
-	if (IS_ERR(stw481x->vmmc_regulator)) {
+	rdev = devm_regulator_register(&pdev->dev, &vmmc_regulator, &config);
+	if (IS_ERR(rdev)) {
 		dev_err(&pdev->dev,
 			"error initializing STw481x VMMC regulator\n");
-		return PTR_ERR(stw481x->vmmc_regulator);
+		return PTR_ERR(rdev);
 	}
 
 	dev_info(&pdev->dev, "initialized STw481x VMMC regulator\n");

drivers/regulator/wm8350-regulator.c

@@ -1151,17 +1151,16 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
 static irqreturn_t pmic_uv_handler(int irq, void *data)
 {
 	struct regulator_dev *rdev = (struct regulator_dev *)data;
-	struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 
 	mutex_lock(&rdev->mutex);
 	if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2)
 		regulator_notifier_call_chain(rdev,
 					      REGULATOR_EVENT_REGULATION_OUT,
-					      wm8350);
+					      NULL);
 	else
 		regulator_notifier_call_chain(rdev,
 					      REGULATOR_EVENT_UNDER_VOLTAGE,
-					      wm8350);
+					      NULL);
 	mutex_unlock(&rdev->mutex);
 
 	return IRQ_HANDLED;

drivers/scsi/ufs/ufshcd.c

@@ -4225,22 +4225,15 @@ static struct scsi_host_template ufshcd_driver_template = {
 static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg,
 				   int ua)
 {
-	int ret = 0;
-	struct regulator *reg = vreg->reg;
-	const char *name = vreg->name;
+	int ret;
 
-	BUG_ON(!vreg);
+	if (!vreg)
+		return 0;
 
-	ret = regulator_set_optimum_mode(reg, ua);
-	if (ret >= 0) {
-		/*
-		 * regulator_set_optimum_mode() returns new regulator
-		 * mode upon success.
-		 */
-		ret = 0;
-	} else {
-		dev_err(dev, "%s: %s set optimum mode(ua=%d) failed, err=%d\n",
-				__func__, name, ua, ret);
+	ret = regulator_set_load(vreg->reg, ua);
+	if (ret < 0) {
+		dev_err(dev, "%s: %s set load (ua=%d) failed, err=%d\n",
+				__func__, vreg->name, ua, ret);
 	}
 
 	return ret;
@@ -4249,18 +4242,12 @@ static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg,
 static inline int ufshcd_config_vreg_lpm(struct ufs_hba *hba,
 					 struct ufs_vreg *vreg)
 {
-	if (!vreg)
-		return 0;
-
 	return ufshcd_config_vreg_load(hba->dev, vreg, UFS_VREG_LPM_LOAD_UA);
 }
 
 static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba,
 					 struct ufs_vreg *vreg)
 {
-	if (!vreg)
-		return 0;
-
 	return ufshcd_config_vreg_load(hba->dev, vreg, vreg->max_uA);
 }
 

drivers/usb/phy/phy-ab8500-usb.c

@@ -277,7 +277,7 @@ static void ab8500_usb_regulator_enable(struct ab8500_usb *ab)
 			dev_err(ab->dev, "Failed to set the Vintcore to 1.3V, ret=%d\n",
 					ret);
 
-		ret = regulator_set_optimum_mode(ab->v_ulpi, 28000);
+		ret = regulator_set_load(ab->v_ulpi, 28000);
 		if (ret < 0)
 			dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n",
 					ret);
@@ -317,7 +317,7 @@ static void ab8500_usb_regulator_disable(struct ab8500_usb *ab)
 						ab->saved_v_ulpi, ret);
 		}
 
-		ret = regulator_set_optimum_mode(ab->v_ulpi, 0);
+		ret = regulator_set_load(ab->v_ulpi, 0);
 		if (ret < 0)
 			dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n",
 					ret);

drivers/usb/phy/phy-msm-usb.c

@@ -142,27 +142,22 @@ static int msm_hsusb_ldo_set_mode(struct msm_otg *motg, int on)
 	int ret = 0;
 
 	if (on) {
-		ret = regulator_set_optimum_mode(motg->v1p8,
-				USB_PHY_1P8_HPM_LOAD);
+		ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_HPM_LOAD);
 		if (ret < 0) {
 			pr_err("Could not set HPM for v1p8\n");
 			return ret;
 		}
-		ret = regulator_set_optimum_mode(motg->v3p3,
-				USB_PHY_3P3_HPM_LOAD);
+		ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_HPM_LOAD);
 		if (ret < 0) {
 			pr_err("Could not set HPM for v3p3\n");
-			regulator_set_optimum_mode(motg->v1p8,
-				USB_PHY_1P8_LPM_LOAD);
+			regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD);
 			return ret;
 		}
 	} else {
-		ret = regulator_set_optimum_mode(motg->v1p8,
-				USB_PHY_1P8_LPM_LOAD);
+		ret = regulator_set_load(motg->v1p8, USB_PHY_1P8_LPM_LOAD);
 		if (ret < 0)
 			pr_err("Could not set LPM for v1p8\n");
-		ret = regulator_set_optimum_mode(motg->v3p3,
-				USB_PHY_3P3_LPM_LOAD);
+		ret = regulator_set_load(motg->v3p3, USB_PHY_3P3_LPM_LOAD);
 		if (ret < 0)
 			pr_err("Could not set LPM for v3p3\n");
 	}

include/linux/mfd/max77693.h

@@ -30,7 +30,7 @@
 #ifndef __LINUX_MFD_MAX77693_H
 #define __LINUX_MFD_MAX77693_H
 
-/* MAX77686 regulator IDs */
+/* MAX77693 regulator IDs */
 enum max77693_regulators {
 	MAX77693_ESAFEOUT1 = 0,
 	MAX77693_ESAFEOUT2,
@@ -38,12 +38,6 @@ enum max77693_regulators {
 	MAX77693_REG_MAX,
 };
 
-struct max77693_regulator_data {
-	int id;
-	struct regulator_init_data *initdata;
-	struct device_node *of_node;
-};
-
 struct max77693_reg_data {
 	u8 addr;
 	u8 data;
@@ -103,10 +97,6 @@ struct max77693_led_platform_data {
 /* MAX77693 */
 
 struct max77693_platform_data {
-	/* regulator data */
-	struct max77693_regulator_data *regulators;
-	int num_regulators;
-
 	/* muic data */
 	struct max77693_muic_platform_data *muic_data;
 	struct max77693_led_platform_data *led_data;

include/linux/mfd/palmas.h

@@ -117,6 +117,7 @@ struct palmas_pmic_driver_data {
 	int ldo_begin;
 	int ldo_end;
 	int max_reg;
+	bool has_regen3;
 	struct palmas_regs_info *palmas_regs_info;
 	struct of_regulator_match *palmas_matches;
 	struct palmas_sleep_requestor_info *sleep_req_info;

include/linux/mfd/stw481x.h

@@ -41,15 +41,11 @@
 
 /**
  * struct stw481x - state holder for the Stw481x drivers
- * @mutex: mutex to serialize I2C accesses
  * @i2c_client: corresponding I2C client
- * @regulator: regulator device for regulator children
  * @map: regmap handle to access device registers
  */
 struct stw481x {
-	struct mutex		lock;
 	struct i2c_client	*client;
-	struct regulator_dev	*vmmc_regulator;
 	struct regmap		*map;
 };
 

include/linux/regulator/act8865.h

@@ -18,6 +18,19 @@
 
 #include <linux/regulator/machine.h>
 
+enum {
+	ACT8600_ID_DCDC1,
+	ACT8600_ID_DCDC2,
+	ACT8600_ID_DCDC3,
+	ACT8600_ID_SUDCDC4,
+	ACT8600_ID_LDO5,
+	ACT8600_ID_LDO6,
+	ACT8600_ID_LDO7,
+	ACT8600_ID_LDO8,
+	ACT8600_ID_LDO9,
+	ACT8600_ID_LDO10,
+};
+
 enum {
 	ACT8865_ID_DCDC1,
 	ACT8865_ID_DCDC2,
@@ -46,6 +59,7 @@ enum {
 };
 
 enum {
+	ACT8600,
 	ACT8865,
 	ACT8846,
 };

include/linux/regulator/consumer.h

@@ -238,7 +238,7 @@ int regulator_get_current_limit(struct regulator *regulator);
 
 int regulator_set_mode(struct regulator *regulator, unsigned int mode);
 unsigned int regulator_get_mode(struct regulator *regulator);
-int regulator_set_optimum_mode(struct regulator *regulator, int load_uA);
+int regulator_set_load(struct regulator *regulator, int load_uA);
 
 int regulator_allow_bypass(struct regulator *regulator, bool allow);
 
@@ -252,8 +252,12 @@ int regulator_list_hardware_vsel(struct regulator *regulator,
 /* regulator notifier block */
 int regulator_register_notifier(struct regulator *regulator,
 			      struct notifier_block *nb);
+int devm_regulator_register_notifier(struct regulator *regulator,
+				     struct notifier_block *nb);
 int regulator_unregister_notifier(struct regulator *regulator,
 				struct notifier_block *nb);
+void devm_regulator_unregister_notifier(struct regulator *regulator,
+					struct notifier_block *nb);
 
 /* driver data - core doesn't touch */
 void *regulator_get_drvdata(struct regulator *regulator);
@@ -479,8 +483,7 @@ static inline unsigned int regulator_get_mode(struct regulator *regulator)
 	return REGULATOR_MODE_NORMAL;
 }
 
-static inline int regulator_set_optimum_mode(struct regulator *regulator,
-					int load_uA)
+static inline int regulator_set_load(struct regulator *regulator, int load_uA)
 {
 	return REGULATOR_MODE_NORMAL;
 }
@@ -515,12 +518,24 @@ static inline int regulator_register_notifier(struct regulator *regulator,
 	return 0;
 }
 
+static inline int devm_regulator_register_notifier(struct regulator *regulator,
+						   struct notifier_block *nb)
+{
+	return 0;
+}
+
 static inline int regulator_unregister_notifier(struct regulator *regulator,
 				struct notifier_block *nb)
 {
 	return 0;
 }
 
+static inline int devm_regulator_unregister_notifier(struct regulator *regulator,
+						     struct notifier_block *nb)
+{
+	return 0;
+}
+
 static inline void *regulator_get_drvdata(struct regulator *regulator)
 {
 	return NULL;

include/linux/regulator/driver.h

@@ -98,6 +98,7 @@ struct regulator_linear_range {
  *	REGULATOR_STATUS value (or negative errno)
  * @get_optimum_mode: Get the most efficient operating mode for the regulator
  *                    when running with the specified parameters.
+ * @set_load: Set the load for the regulator.
  *
  * @set_bypass: Set the regulator in bypass mode.
  * @get_bypass: Get the regulator bypass mode state.
@@ -167,6 +168,8 @@ struct regulator_ops {
 	/* get most efficient regulator operating mode for load */
 	unsigned int (*get_optimum_mode) (struct regulator_dev *, int input_uV,
 					  int output_uV, int load_uA);
+	/* set the load on the regulator */
+	int (*set_load)(struct regulator_dev *, int load_uA);
 
 	/* control and report on bypass mode */
 	int (*set_bypass)(struct regulator_dev *dev, bool enable);
@@ -367,6 +370,7 @@ struct regulator_dev {
 	struct device dev;
 	struct regulation_constraints *constraints;
 	struct regulator *supply;	/* for tree */
+	const char *supply_name;
 	struct regmap *regmap;
 
 	struct delayed_work disable_work;