Merge remote-tracking branches 'regulator/topic/s5m8767', 'regulator/topic/stub', 'regulator/topic/tps65090', 'regulator/topic/tps65217' and 'regulator/topic/tps65218' into regulator-next

Documentation/devicetree/bindings/regulator/tps65090.txt

@@ -21,6 +21,10 @@ Optional properties:
   number should be provided. If it is externally controlled and no GPIO
   entry then driver will just configure this rails as external control
   and will not provide any enable/disable APIs.
+- ti,overcurrent-wait: This is applicable to FET registers, which have a
+  poorly defined "overcurrent wait" field.  If this property is present it
+  should be between 0 - 3.  If this property isn't present we won't touch the
+  "overcurrent wait" field and we'll leave it to the BIOS/EC to deal with.
 
 Each regulator is defined using the standard binding for regulators.
 

drivers/regulator/s5m8767.c

@@ -28,7 +28,6 @@ struct s5m8767_info {
 	struct device *dev;
 	struct sec_pmic_dev *iodev;
 	int num_regulators;
-	struct regulator_dev **rdev;
 	struct sec_opmode_data *opmode;
 
 	int ramp_delay;
@@ -529,16 +528,6 @@ static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev,
 	return 0;
 }
 
-static void s5m8767_pmic_dt_parse_ext_control_gpio(struct sec_pmic_dev *iodev,
-		struct sec_regulator_data *rdata,
-		struct device_node *reg_np)
-{
-	rdata->ext_control_gpio = of_get_named_gpio(reg_np,
-			"s5m8767,pmic-ext-control-gpios", 0);
-	if (!gpio_is_valid(rdata->ext_control_gpio))
-		rdata->ext_control_gpio = 0;
-}
-
 static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
 					struct sec_platform_data *pdata)
 {
@@ -587,7 +576,8 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
 			continue;
 		}
 
-		s5m8767_pmic_dt_parse_ext_control_gpio(iodev, rdata, reg_np);
+		rdata->ext_control_gpio = of_get_named_gpio(reg_np,
+			"s5m8767,pmic-ext-control-gpios", 0);
 
 		rdata->id = i;
 		rdata->initdata = of_get_regulator_init_data(
@@ -695,7 +685,6 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
 	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 	struct sec_platform_data *pdata = iodev->pdata;
 	struct regulator_config config = { };
-	struct regulator_dev **rdev;
 	struct s5m8767_info *s5m8767;
 	int i, ret, size, buck_init;
 
@@ -737,11 +726,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
-	s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
-	if (!s5m8767->rdev)
-		return -ENOMEM;
 
-	rdev = s5m8767->rdev;
 	s5m8767->dev = &pdev->dev;
 	s5m8767->iodev = iodev;
 	s5m8767->num_regulators = pdata->num_regulators;
@@ -938,6 +923,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
 		const struct sec_voltage_desc *desc;
 		int id = pdata->regulators[i].id;
 		int enable_reg, enable_val;
+		struct regulator_dev *rdev;
 
 		desc = reg_voltage_map[id];
 		if (desc) {
@@ -964,26 +950,27 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
 		config.driver_data = s5m8767;
 		config.regmap = iodev->regmap_pmic;
 		config.of_node = pdata->regulators[i].reg_node;
-		config.ena_gpio = config.ena_gpio_flags = 0;
-		if (pdata->regulators[i].ext_control_gpio)
+		config.ena_gpio = -EINVAL;
+		config.ena_gpio_flags = 0;
+		if (gpio_is_valid(pdata->regulators[i].ext_control_gpio))
 			s5m8767_regulator_config_ext_control(s5m8767,
 					&pdata->regulators[i], &config);
 
-		rdev[i] = devm_regulator_register(&pdev->dev, &regulators[id],
+		rdev = devm_regulator_register(&pdev->dev, &regulators[id],
 						  &config);
-		if (IS_ERR(rdev[i])) {
-			ret = PTR_ERR(rdev[i]);
+		if (IS_ERR(rdev)) {
+			ret = PTR_ERR(rdev);
 			dev_err(s5m8767->dev, "regulator init failed for %d\n",
 					id);
 			return ret;
 		}
 
-		if (pdata->regulators[i].ext_control_gpio) {
-			ret = s5m8767_enable_ext_control(s5m8767, rdev[i]);
+		if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) {
+			ret = s5m8767_enable_ext_control(s5m8767, rdev);
 			if (ret < 0) {
 				dev_err(s5m8767->dev,
 						"failed to enable gpio control over %s: %d\n",
-						rdev[i]->desc->name, ret);
+						rdev->desc->name, ret);
 				return ret;
 			}
 		}

drivers/regulator/tps65090-regulator.c

@@ -17,6 +17,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/gpio.h>
 #include <linux/of_gpio.h>
@@ -28,49 +29,216 @@
 #include <linux/regulator/of_regulator.h>
 #include <linux/mfd/tps65090.h>
 
+#define MAX_CTRL_READ_TRIES	5
+#define MAX_FET_ENABLE_TRIES	1000
+
+#define CTRL_EN_BIT		0 /* Regulator enable bit, active high */
+#define CTRL_WT_BIT		2 /* Regulator wait time 0 bit */
+#define CTRL_PG_BIT		4 /* Regulator power good bit, 1=good */
+#define CTRL_TO_BIT		7 /* Regulator timeout bit, 1=wait */
+
+#define MAX_OVERCURRENT_WAIT	3 /* Overcurrent wait must be <= this */
+
+/**
+ * struct tps65090_regulator - Per-regulator data for a tps65090 regulator
+ *
+ * @dev: Pointer to our device.
+ * @desc: The struct regulator_desc for the regulator.
+ * @rdev: The struct regulator_dev for the regulator.
+ * @overcurrent_wait_valid: True if overcurrent_wait is valid.
+ * @overcurrent_wait: For FETs, the value to put in the WTFET bitfield.
+ */
+
 struct tps65090_regulator {
 	struct device		*dev;
 	struct regulator_desc	*desc;
 	struct regulator_dev	*rdev;
+	bool			overcurrent_wait_valid;
+	int			overcurrent_wait;
 };
 
 static struct regulator_ops tps65090_ext_control_ops = {
 };
 
-static struct regulator_ops tps65090_reg_contol_ops = {
+/**
+ * tps65090_reg_set_overcurrent_wait - Setup overcurrent wait
+ *
+ * This will set the overcurrent wait time based on what's in the regulator
+ * info.
+ *
+ * @ri:		Overall regulator data
+ * @rdev:	Regulator device
+ *
+ * Return: 0 if no error, non-zero if there was an error writing the register.
+ */
+static int tps65090_reg_set_overcurrent_wait(struct tps65090_regulator *ri,
+					     struct regulator_dev *rdev)
+{
+	int ret;
+
+	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+				 MAX_OVERCURRENT_WAIT << CTRL_WT_BIT,
+				 ri->overcurrent_wait << CTRL_WT_BIT);
+	if (ret) {
+		dev_err(&rdev->dev, "Error updating overcurrent wait %#x\n",
+			rdev->desc->enable_reg);
+	}
+
+	return ret;
+}
+
+/**
+ * tps65090_try_enable_fet - Try to enable a FET
+ *
+ * @rdev:	Regulator device
+ *
+ * Return: 0 if ok, -ENOTRECOVERABLE if the FET power good bit did not get
+ * set, or some other -ve value if another error occurred (e.g. i2c error)
+ */
+static int tps65090_try_enable_fet(struct regulator_dev *rdev)
+{
+	unsigned int control;
+	int ret, i;
+
+	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+				 rdev->desc->enable_mask,
+				 rdev->desc->enable_mask);
+	if (ret < 0) {
+		dev_err(&rdev->dev, "Error in updating reg %#x\n",
+			rdev->desc->enable_reg);
+		return ret;
+	}
+
+	for (i = 0; i < MAX_CTRL_READ_TRIES; i++) {
+		ret = regmap_read(rdev->regmap, rdev->desc->enable_reg,
+				  &control);
+		if (ret < 0)
+			return ret;
+
+		if (!(control & BIT(CTRL_TO_BIT)))
+			break;
+
+		usleep_range(1000, 1500);
+	}
+	if (!(control & BIT(CTRL_PG_BIT)))
+		return -ENOTRECOVERABLE;
+
+	return 0;
+}
+
+/**
+ * tps65090_fet_enable - Enable a FET, trying a few times if it fails
+ *
+ * Some versions of the tps65090 have issues when turning on the FETs.
+ * This function goes through several steps to ensure the best chance of the
+ * FET going on.  Specifically:
+ * - We'll make sure that we bump the "overcurrent wait" to the maximum, which
+ *   increases the chances that we'll turn on properly.
+ * - We'll retry turning the FET on multiple times (turning off in between).
+ *
+ * @rdev:	Regulator device
+ *
+ * Return: 0 if ok, non-zero if it fails.
+ */
+static int tps65090_fet_enable(struct regulator_dev *rdev)
+{
+	int ret, tries;
+
+	/*
+	 * Try enabling multiple times until we succeed since sometimes the
+	 * first try times out.
+	 */
+	tries = 0;
+	while (true) {
+		ret = tps65090_try_enable_fet(rdev);
+		if (!ret)
+			break;
+		if (ret != -ENOTRECOVERABLE || tries == MAX_FET_ENABLE_TRIES)
+			goto err;
+
+		/* Try turning the FET off (and then on again) */
+		ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+					 rdev->desc->enable_mask, 0);
+		if (ret)
+			goto err;
+
+		tries++;
+	}
+
+	if (tries)
+		dev_warn(&rdev->dev, "reg %#x enable ok after %d tries\n",
+			 rdev->desc->enable_reg, tries);
+
+	return 0;
+err:
+	dev_warn(&rdev->dev, "reg %#x enable failed\n", rdev->desc->enable_reg);
+	WARN_ON(1);
+
+	return ret;
+}
+
+static struct regulator_ops tps65090_reg_control_ops = {
 	.enable		= regulator_enable_regmap,
 	.disable	= regulator_disable_regmap,
 	.is_enabled	= regulator_is_enabled_regmap,
 };
 
+static struct regulator_ops tps65090_fet_control_ops = {
+	.enable		= tps65090_fet_enable,
+	.disable	= regulator_disable_regmap,
+	.is_enabled	= regulator_is_enabled_regmap,
+};
+
 static struct regulator_ops tps65090_ldo_ops = {
 };
 
-#define tps65090_REG_DESC(_id, _sname, _en_reg, _ops)	\
+#define tps65090_REG_DESC(_id, _sname, _en_reg, _en_bits, _ops)	\
 {							\
 	.name = "TPS65090_RAILS"#_id,			\
 	.supply_name = _sname,				\
 	.id = TPS65090_REGULATOR_##_id,			\
 	.ops = &_ops,					\
 	.enable_reg = _en_reg,				\
-	.enable_mask = BIT(0),				\
+	.enable_val = _en_bits,				\
+	.enable_mask = _en_bits,			\
 	.type = REGULATOR_VOLTAGE,			\
 	.owner = THIS_MODULE,				\
 }
 
 static struct regulator_desc tps65090_regulator_desc[] = {
-	tps65090_REG_DESC(DCDC1, "vsys1",   0x0C, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(DCDC2, "vsys2",   0x0D, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(DCDC3, "vsys3",   0x0E, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(FET1,  "infet1",  0x0F, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(FET2,  "infet2",  0x10, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(FET3,  "infet3",  0x11, tps65090_reg_contol_ops),
-	tps65090_REG_DESC(FET4,  "infet4",  0x12, tps65090_reg_contol_ops),
-	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(DCDC1, "vsys1",   0x0C, BIT(CTRL_EN_BIT),
+			  tps65090_reg_control_ops),
+	tps65090_REG_DESC(DCDC2, "vsys2",   0x0D, BIT(CTRL_EN_BIT),
+			  tps65090_reg_control_ops),
+	tps65090_REG_DESC(DCDC3, "vsys3",   0x0E, BIT(CTRL_EN_BIT),
+			  tps65090_reg_control_ops),
+
+	tps65090_REG_DESC(FET1,  "infet1",  0x0F,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+	tps65090_REG_DESC(FET2,  "infet2",  0x10,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+	tps65090_REG_DESC(FET3,  "infet3",  0x11,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+	tps65090_REG_DESC(FET4,  "infet4",  0x12,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+	tps65090_REG_DESC(FET5,  "infet5",  0x13,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+	tps65090_REG_DESC(FET6,  "infet6",  0x14,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+	tps65090_REG_DESC(FET7,  "infet7",  0x15,
+			  BIT(CTRL_EN_BIT) | BIT(CTRL_PG_BIT),
+			  tps65090_fet_control_ops),
+
+	tps65090_REG_DESC(LDO1,  "vsys-l1", 0, 0,
+			  tps65090_ldo_ops),
+	tps65090_REG_DESC(LDO2,  "vsys-l2", 0, 0,
+			  tps65090_ldo_ops),
 };
 
 static inline bool is_dcdc(int id)
@@ -209,6 +377,11 @@ static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
 			rpdata->gpio = of_get_named_gpio(np,
 					"dcdc-ext-control-gpios", 0);
 
+		if (of_property_read_u32(tps65090_matches[idx].of_node,
+					 "ti,overcurrent-wait",
+					 &rpdata->overcurrent_wait) == 0)
+			rpdata->overcurrent_wait_valid = true;
+
 		tps65090_pdata->reg_pdata[idx] = rpdata;
 	}
 	return tps65090_pdata;
@@ -258,6 +431,11 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
 		ri = &pmic[num];
 		ri->dev = &pdev->dev;
 		ri->desc = &tps65090_regulator_desc[num];
+		if (tps_pdata) {
+			ri->overcurrent_wait_valid =
+				tps_pdata->overcurrent_wait_valid;
+			ri->overcurrent_wait = tps_pdata->overcurrent_wait;
+		}
 
 		/*
 		 * TPS5090 DCDC support the control from external digital input.
@@ -299,6 +477,12 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
 		}
 		ri->rdev = rdev;
 
+		if (ri->overcurrent_wait_valid) {
+			ret = tps65090_reg_set_overcurrent_wait(ri, rdev);
+			if (ret < 0)
+				return ret;
+		}
+
 		/* Enable external control if it is require */
 		if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data &&
 				tps_pdata->enable_ext_control) {

drivers/regulator/tps65217-regulator.c

@@ -134,6 +134,7 @@ static struct regulator_ops tps65217_pmic_ldo1_ops = {
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= tps65217_pmic_set_voltage_sel,
 	.list_voltage		= regulator_list_voltage_table,
+	.map_voltage		= regulator_map_voltage_ascend,
 };
 
 static const struct regulator_desc regulators[] = {
@@ -257,9 +258,6 @@ static int tps65217_regulator_probe(struct platform_device *pdev)
 				pdev->name);
 			return PTR_ERR(rdev);
 		}
-
-		/* Save regulator for cleanup */
-		tps->rdev[i] = rdev;
 	}
 	return 0;
 }

drivers/regulator/tps65218-regulator.c

@@ -27,12 +27,10 @@
 #include <linux/regulator/machine.h>
 #include <linux/mfd/tps65218.h>
 
-static unsigned int tps65218_ramp_delay = 4000;
-
 enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 };
 
 #define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t, \
-			    _lr, _nlr)				\
+			    _lr, _nlr, _delay)			\
 	{							\
 		.name			= _name,		\
 		.id			= _id,			\
@@ -47,6 +45,7 @@ enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 };
 		.volt_table		= _t,			\
 		.linear_ranges		= _lr,			\
 		.n_linear_ranges	= _nlr,			\
+		.ramp_delay		= _delay,		\
 	}							\
 
 #define TPS65218_INFO(_id, _nm, _min, _max)	\
@@ -152,22 +151,6 @@ static int tps65218_pmic_disable(struct regulator_dev *dev)
 				   dev->desc->enable_mask, TPS65218_PROTECT_L1);
 }
 
-static int tps65218_set_voltage_time_sel(struct regulator_dev *rdev,
-	unsigned int old_selector, unsigned int new_selector)
-{
-	int old_uv, new_uv;
-
-	old_uv = regulator_list_voltage_linear_range(rdev, old_selector);
-	if (old_uv < 0)
-		return old_uv;
-
-	new_uv = regulator_list_voltage_linear_range(rdev, new_selector);
-	if (new_uv < 0)
-		return new_uv;
-
-	return DIV_ROUND_UP(abs(old_uv - new_uv), tps65218_ramp_delay);
-}
-
 /* Operations permitted on DCDC1, DCDC2 */
 static struct regulator_ops tps65218_dcdc12_ops = {
 	.is_enabled		= regulator_is_enabled_regmap,
@@ -177,7 +160,7 @@ static struct regulator_ops tps65218_dcdc12_ops = {
 	.set_voltage_sel	= tps65218_pmic_set_voltage_sel,
 	.list_voltage		= regulator_list_voltage_linear_range,
 	.map_voltage		= regulator_map_voltage_linear_range,
-	.set_voltage_time_sel	= tps65218_set_voltage_time_sel,
+	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
 };
 
 /* Operations permitted on DCDC3, DCDC4 and LDO1 */
@@ -203,33 +186,33 @@ static const struct regulator_desc regulators[] = {
 			   TPS65218_REG_CONTROL_DCDC1,
 			   TPS65218_CONTROL_DCDC1_MASK,
 			   TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, NULL,
-			   dcdc1_dcdc2_ranges, 2),
+			   dcdc1_dcdc2_ranges, 2, 4000),
 	TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64,
 			   TPS65218_REG_CONTROL_DCDC2,
 			   TPS65218_CONTROL_DCDC2_MASK,
 			   TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, NULL,
-			   dcdc1_dcdc2_ranges, 2),
+			   dcdc1_dcdc2_ranges, 2, 4000),
 	TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops,
 			   64, TPS65218_REG_CONTROL_DCDC3,
 			   TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
 			   TPS65218_ENABLE1_DC3_EN, NULL,
-			   ldo1_dcdc3_ranges, 2),
+			   ldo1_dcdc3_ranges, 2, 0),
 	TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops,
 			   53, TPS65218_REG_CONTROL_DCDC4,
 			   TPS65218_CONTROL_DCDC4_MASK,
 			   TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, NULL,
-			   dcdc4_ranges, 2),
+			   dcdc4_ranges, 2, 0),
 	TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops,
 			   1, -1, -1, TPS65218_REG_ENABLE1,
-			   TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0),
+			   TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0, 0),
 	TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops,
 			   1, -1, -1, TPS65218_REG_ENABLE1,
-			   TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0),
+			   TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0, 0),
 	TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64,
 			   TPS65218_REG_CONTROL_DCDC4,
 			   TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
 			   TPS65218_ENABLE2_LDO1_EN, NULL, ldo1_dcdc3_ranges,
-			   2),
+			   2, 0),
 };
 
 static int tps65218_regulator_probe(struct platform_device *pdev)

include/linux/mfd/tps65090.h

@@ -92,11 +92,16 @@ struct tps65090 {
  *     DCDC1, DCDC2 and DCDC3.
  * @gpio: Gpio number if external control is enabled and controlled through
  *     gpio.
+ * @overcurrent_wait_valid: True if the overcurrent_wait should be applied.
+ * @overcurrent_wait: Value to set as the overcurrent wait time.  This is the
+ *     actual bitfield value, not a time in ms (valid value are 0 - 3).
  */
 struct tps65090_regulator_plat_data {
 	struct regulator_init_data *reg_init_data;
 	bool enable_ext_control;
 	int gpio;
+	bool overcurrent_wait_valid;
+	int overcurrent_wait;
 };
 
 struct tps65090_platform_data {

include/linux/mfd/tps65217.h

@@ -254,7 +254,6 @@ struct tps65217 {
 	struct tps65217_board *pdata;
 	unsigned long id;
 	struct regulator_desc desc[TPS65217_NUM_REGULATOR];
-	struct regulator_dev *rdev[TPS65217_NUM_REGULATOR];
 	struct regmap *regmap;
 };
 

include/linux/regulator/consumer.h

@@ -401,6 +401,12 @@ static inline int regulator_set_voltage(struct regulator *regulator,
 	return 0;
 }
 
+static inline int regulator_set_voltage_time(struct regulator *regulator,
+					     int old_uV, int new_uV)
+{
+	return 0;
+}
+
 static inline int regulator_get_voltage(struct regulator *regulator)
 {
 	return -EINVAL;