Merge remote-tracking branches 'regulator/topic/act8865', 'regulator/topic/anatop', 'regulator/topic/arizona', 'regulator/topic/axp20x' and 'regulator/topic/bcm590xx' into regulator-next

Documentation/devicetree/bindings/mfd/axp20x.txt

@@ -60,8 +60,8 @@ DCDC2		: DC-DC buck	: vin2-supply
 DCDC3		: DC-DC	buck	: vin3-supply
 DCDC4		: DC-DC	buck	: vin4-supply
 DCDC5		: DC-DC	buck	: vin5-supply
-DC1SW		: On/Off Switch	: dcdc1-supply		: DCDC1 secondary output
-DC5LDO		: LDO		: dcdc5-supply		: input from DCDC5
+DC1SW		: On/Off Switch	:			: DCDC1 secondary output
+DC5LDO		: LDO		:			: input from DCDC5
 ALDO1		: LDO		: aldoin-supply		: shared supply
 ALDO2		: LDO		: aldoin-supply		: shared supply
 ALDO3		: LDO		: aldoin-supply		: shared supply

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

@@ -8,6 +8,8 @@ Required properties:
 Optional properties:
 - system-power-controller: Telling whether or not this pmic is controlling
   the system power. See Documentation/devicetree/bindings/power/power-controller.txt .
+- active-semi,vsel-high: Indicates the VSEL pin is high.
+  If this property is missing, assume the VSEL pin is low(0).
 
 Optional input supply properties:
 - for act8600:
@@ -49,6 +51,7 @@ Example:
 			pmic: act8865@5b {
 				compatible = "active-semi,act8865";
 				reg = <0x5b>;
+				active-semi,vsel-high;
 				status = "disabled";
 
 				regulators {

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

@@ -13,6 +13,7 @@ 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
+- vin-supply: The supply for this regulator
 
 Any property defined as part of the core regulator
 binding, defined in regulator.txt, can also be used.

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

@@ -0,0 +1,17 @@
+Cirrus Logic Arizona class audio SoCs
+
+These devices are audio SoCs with extensive digital capabilities and a range
+of analogue I/O.
+
+This document lists regulator specific bindings, see the primary binding
+document:
+  ../mfd/arizona.txt
+
+Optional properties:
+  - wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA
+
+Optional subnodes:
+  - ldo1 : Initial data for the LDO1 regulator, as covered in
+    Documentation/devicetree/bindings/regulator/regulator.txt
+  - micvdd : Initial data for the MICVDD regulator, as covered in
+    Documentation/devicetree/bindings/regulator/regulator.txt

drivers/regulator/act8865-regulator.c

@@ -261,6 +261,16 @@ static const struct regulator_desc act8865_regulators[] = {
 	ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
 };
 
+static const struct regulator_desc act8865_alt_regulators[] = {
+	ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
+	ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
+	ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "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 },
@@ -413,6 +423,7 @@ static int act8865_pmic_probe(struct i2c_client *client,
 	struct act8865 *act8865;
 	unsigned long type;
 	int off_reg, off_mask;
+	int voltage_select = 0;
 
 	pdata = dev_get_platdata(dev);
 
@@ -424,6 +435,10 @@ static int act8865_pmic_probe(struct i2c_client *client,
 			return -ENODEV;
 
 		type = (unsigned long) id->data;
+
+		voltage_select = !!of_get_property(dev->of_node,
+						   "active-semi,vsel-high",
+						   NULL);
 	} else {
 		type = i2c_id->driver_data;
 	}
@@ -442,8 +457,13 @@ static int act8865_pmic_probe(struct i2c_client *client,
 		off_mask = ACT8846_OFF_SYSMASK;
 		break;
 	case ACT8865:
-		regulators = act8865_regulators;
-		num_regulators = ARRAY_SIZE(act8865_regulators);
+		if (voltage_select) {
+			regulators = act8865_alt_regulators;
+			num_regulators = ARRAY_SIZE(act8865_alt_regulators);
+		} else {
+			regulators = act8865_regulators;
+			num_regulators = ARRAY_SIZE(act8865_regulators);
+		}
 		off_reg = ACT8865_SYS_CTRL;
 		off_mask = ACT8865_MSTROFF;
 		break;

drivers/regulator/anatop-regulator.c

@@ -30,6 +30,7 @@
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/of_regulator.h>
+#include <linux/regulator/machine.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 */
@@ -199,6 +200,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
 	rdesc->owner = THIS_MODULE;
 
 	initdata = of_get_regulator_init_data(dev, np, rdesc);
+	initdata->supply_regulator = "vin";
 	sreg->initdata = initdata;
 
 	anatop_np = of_get_parent(np);
@@ -262,6 +264,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
 	rdesc->vsel_reg = sreg->control_reg;
 	rdesc->vsel_mask = ((1 << sreg->vol_bit_width) - 1) <<
 			   sreg->vol_bit_shift;
+	rdesc->min_dropout_uV = 125000;
 
 	config.dev = &pdev->dev;
 	config.init_data = initdata;

drivers/regulator/arizona-ldo1.c

@@ -17,6 +17,7 @@
 #include <linux/bitops.h>
 #include <linux/err.h>
 #include <linux/of.h>
+#include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
@@ -189,13 +190,22 @@ static int arizona_ldo1_of_get_pdata(struct arizona *arizona,
 {
 	struct arizona_pdata *pdata = &arizona->pdata;
 	struct arizona_ldo1 *ldo1 = config->driver_data;
+	struct device_node *np = arizona->dev->of_node;
 	struct device_node *init_node, *dcvdd_node;
 	struct regulator_init_data *init_data;
 
-	pdata->ldoena = arizona_of_get_named_gpio(arizona, "wlf,ldoena", true);
+	pdata->ldoena = of_get_named_gpio(np, "wlf,ldoena", 0);
+	if (pdata->ldoena < 0) {
+		dev_warn(arizona->dev,
+			 "LDOENA GPIO property missing/malformed: %d\n",
+			 pdata->ldoena);
+		pdata->ldoena = 0;
+	} else {
+		config->ena_gpio_initialized = true;
+	}
 
-	init_node = of_get_child_by_name(arizona->dev->of_node, "ldo1");
-	dcvdd_node = of_parse_phandle(arizona->dev->of_node, "DCVDD-supply", 0);
+	init_node = of_get_child_by_name(np, "ldo1");
+	dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);
 
 	if (init_node) {
 		config->of_node = init_node;
@@ -245,6 +255,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
 	switch (arizona->type) {
 	case WM5102:
 	case WM8997:
+	case WM8998:
+	case WM1814:
 		desc = &arizona_ldo1_hc;
 		ldo1->init_data = arizona_ldo1_dvfs;
 		break;
@@ -272,8 +284,6 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
 			ret = arizona_ldo1_of_get_pdata(arizona, &config, desc);
 			if (ret < 0)
 				return ret;
-
-			config.ena_gpio_initialized = true;
 		}
 	}
 

drivers/regulator/axp20x-regulator.c

@@ -196,10 +196,10 @@ static const struct regulator_desc axp22x_regulators[] = {
 	AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
 		 AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
 	/* secondary switchable output of DCDC1 */
-	AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", "dcdc1", 1600, 3400, 100,
+	AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, 1600, 3400, 100,
 		    AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(7)),
 	/* LDO regulator internally chained to DCDC5 */
-	AXP_DESC(AXP22X, DC5LDO, "dc5ldo", "dcdc5", 700, 1400, 100,
+	AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
 		 AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
 	AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
 		 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
@@ -350,6 +350,8 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 	};
 	int ret, i, nregulators;
 	u32 workmode;
+	const char *axp22x_dc1_name = axp22x_regulators[AXP22X_DCDC1].name;
+	const char *axp22x_dc5_name = axp22x_regulators[AXP22X_DCDC5].name;
 
 	switch (axp20x->variant) {
 	case AXP202_ID:
@@ -371,8 +373,37 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 	axp20x_regulator_parse_dt(pdev);
 
 	for (i = 0; i < nregulators; i++) {
-		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
-					       &config);
+		const struct regulator_desc *desc = &regulators[i];
+		struct regulator_desc *new_desc;
+
+		/*
+		 * Regulators DC1SW and DC5LDO are connected internally,
+		 * so we have to handle their supply names separately.
+		 *
+		 * We always register the regulators in proper sequence,
+		 * so the supply names are correctly read. See the last
+		 * part of this loop to see where we save the DT defined
+		 * name.
+		 */
+		if (regulators == axp22x_regulators) {
+			if (i == AXP22X_DC1SW) {
+				new_desc = devm_kzalloc(&pdev->dev,
+							sizeof(*desc),
+							GFP_KERNEL);
+				*new_desc = regulators[i];
+				new_desc->supply_name = axp22x_dc1_name;
+				desc = new_desc;
+			} else if (i == AXP22X_DC5LDO) {
+				new_desc = devm_kzalloc(&pdev->dev,
+							sizeof(*desc),
+							GFP_KERNEL);
+				*new_desc = regulators[i];
+				new_desc->supply_name = axp22x_dc5_name;
+				desc = new_desc;
+			}
+		}
+
+		rdev = devm_regulator_register(&pdev->dev, desc, &config);
 		if (IS_ERR(rdev)) {
 			dev_err(&pdev->dev, "Failed to register %s\n",
 				regulators[i].name);
@@ -388,6 +419,21 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 				dev_err(&pdev->dev, "Failed to set workmode on %s\n",
 					rdev->desc->name);
 		}
+
+		/*
+		 * Save AXP22X DCDC1 / DCDC5 regulator names for later.
+		 */
+		if (regulators == axp22x_regulators) {
+			/* Can we use rdev->constraints->name instead? */
+			if (i == AXP22X_DCDC1)
+				of_property_read_string(rdev->dev.of_node,
+							"regulator-name",
+							&axp22x_dc1_name);
+			else if (i == AXP22X_DCDC5)
+				of_property_read_string(rdev->dev.of_node,
+							"regulator-name",
+							&axp22x_dc5_name);
+		}
 	}
 
 	return 0;

drivers/regulator/bcm590xx-regulator.c

@@ -244,7 +244,7 @@ static int bcm590xx_get_enable_register(int id)
 			break;
 		case BCM590XX_REG_VBUS:
 			reg = BCM590XX_OTG_CTRL;
-		};
+		}
 
 
 	return reg;

include/linux/regulator/driver.h

@@ -245,6 +245,7 @@ enum regulator_type {
  * @linear_min_sel: Minimal selector for starting linear mapping
  * @fixed_uV: Fixed voltage of rails.
  * @ramp_delay: Time to settle down after voltage change (unit: uV/us)
+ * @min_dropout_uV: The minimum dropout voltage this regulator can handle
  * @linear_ranges: A constant table of possible voltage ranges.
  * @n_linear_ranges: Number of entries in the @linear_ranges table.
  * @volt_table: Voltage mapping table (if table based mapping)
@@ -292,6 +293,7 @@ struct regulator_desc {
 	unsigned int linear_min_sel;
 	int fixed_uV;
 	unsigned int ramp_delay;
+	int min_dropout_uV;
 
 	const struct regulator_linear_range *linear_ranges;
 	int n_linear_ranges;