1 files changed, 42 insertions, 3 deletions

diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index dff120a38e404..38e8122c4b09d 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -35,6 +35,7 @@
 #define LDO_RAMP_UP_FREQ_IN_MHZ         24 /* cycle based on 24M OSC */
 
 #define LDO_POWER_GATE			0x00
+#define LDO_FET_FULL_ON			0x1f
 
 struct anatop_regulator {
 	const char *name;
@@ -50,6 +51,7 @@ struct anatop_regulator {
 	int max_voltage;
 	struct regulator_desc rdesc;
 	struct regulator_init_data *initdata;
+	bool bypass;
 	int sel;
 };
 
@@ -103,8 +105,10 @@ static int anatop_regmap_get_voltage_sel(struct regulator_dev *reg)
 static int anatop_regmap_enable(struct regulator_dev *reg)
 {
 	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
+	int sel;
 
-	return regulator_set_voltage_sel_regmap(reg, anatop_reg->sel);
+	sel = anatop_reg->bypass ? LDO_FET_FULL_ON : anatop_reg->sel;
+	return regulator_set_voltage_sel_regmap(reg, sel);
 }
 
 static int anatop_regmap_disable(struct regulator_dev *reg)
@@ -123,7 +127,7 @@ static int anatop_regmap_core_set_voltage_sel(struct regulator_dev *reg,
 	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
 	int ret;
 
-	if (!anatop_regmap_is_enabled(reg)) {
+	if (anatop_reg->bypass || !anatop_regmap_is_enabled(reg)) {
 		anatop_reg->sel = selector;
 		return 0;
 	}
@@ -138,12 +142,41 @@ static int anatop_regmap_core_get_voltage_sel(struct regulator_dev *reg)
 {
 	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
 
-	if (!anatop_regmap_is_enabled(reg))
+	if (anatop_reg->bypass || !anatop_regmap_is_enabled(reg))
 		return anatop_reg->sel;
 
 	return regulator_get_voltage_sel_regmap(reg);
 }
 
+static int anatop_regmap_get_bypass(struct regulator_dev *reg, bool *enable)
+{
+	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
+	int sel;
+
+	sel = regulator_get_voltage_sel_regmap(reg);
+	if (sel == LDO_FET_FULL_ON)
+		WARN_ON(!anatop_reg->bypass);
+	else if (sel != LDO_POWER_GATE)
+		WARN_ON(anatop_reg->bypass);
+
+	*enable = anatop_reg->bypass;
+	return 0;
+}
+
+static int anatop_regmap_set_bypass(struct regulator_dev *reg, bool enable)
+{
+	struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
+	int sel;
+
+	if (enable == anatop_reg->bypass)
+		return 0;
+
+	sel = enable ? LDO_FET_FULL_ON : anatop_reg->sel;
+	anatop_reg->bypass = enable;
+
+	return regulator_set_voltage_sel_regmap(reg, sel);
+}
+
 static struct regulator_ops anatop_rops = {
 	.set_voltage_sel = anatop_regmap_set_voltage_sel,
 	.get_voltage_sel = anatop_regmap_get_voltage_sel,
@@ -160,6 +193,8 @@ static struct regulator_ops anatop_core_rops = {
 	.get_voltage_sel = anatop_regmap_core_get_voltage_sel,
 	.list_voltage = regulator_list_voltage_linear,
 	.map_voltage = regulator_map_voltage_linear,
+	.get_bypass = anatop_regmap_get_bypass,
+	.set_bypass = anatop_regmap_set_bypass,
 };
 
 static int anatop_regulator_probe(struct platform_device *pdev)
@@ -265,6 +300,10 @@ static int anatop_regulator_probe(struct platform_device *pdev)
 		}
 
 		sreg->sel = (val & rdesc->vsel_mask) >> sreg->vol_bit_shift;
+		if (sreg->sel == LDO_FET_FULL_ON) {
+			sreg->sel = 0;
+			sreg->bypass = true;
+		}
 	} else {
 		rdesc->ops = &anatop_rops;
 	}