regulator: Implement tps65912_list_voltage to be shared by both DCDCs and LDOs

Merge tps65912_list_voltage_dcdc and tps65912_list_voltage_ldo to
tps65912_list_voltage.  This change does not add too much complexity in
tps65912_list_voltage function.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/tps65912-regulator.c

@@ -372,12 +372,14 @@ static unsigned int tps65912_get_mode(struct regulator_dev *dev)
 	return mode;
 }
 
-static int tps65912_list_voltage_dcdc(struct regulator_dev *dev,
-					unsigned selector)
+static int tps65912_list_voltage(struct regulator_dev *dev, unsigned selector)
 {
 	struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 	int range, voltage = 0, id = rdev_get_id(dev);
 
+	if (id >= TPS65912_REG_LDO1 && id <= TPS65912_REG_LDO10)
+		return tps65912_vsel_to_uv_ldo(selector);
+
 	if (id > TPS65912_REG_DCDC4)
 		return -EINVAL;
 
@@ -418,7 +420,7 @@ static int tps65912_get_voltage_dcdc(struct regulator_dev *dev)
 	vsel = tps65912_reg_read(mfd, reg);
 	vsel &= 0x3F;
 
-	return tps65912_list_voltage_dcdc(dev, vsel);
+	return tps65912_list_voltage(dev, vsel);
 }
 
 static int tps65912_set_voltage_sel(struct regulator_dev *dev,
@@ -451,17 +453,6 @@ static int tps65912_get_voltage_ldo(struct regulator_dev *dev)
 	return tps65912_vsel_to_uv_ldo(vsel);
 }
 
-static int tps65912_list_voltage_ldo(struct regulator_dev *dev,
-					unsigned selector)
-{
-	int ldo = rdev_get_id(dev);
-
-	if (ldo < TPS65912_REG_LDO1 || ldo > TPS65912_REG_LDO10)
-		return -EINVAL;
-
-	return tps65912_vsel_to_uv_ldo(selector);
-}
-
 /* Operations permitted on DCDCx */
 static struct regulator_ops tps65912_ops_dcdc = {
 	.is_enabled = tps65912_reg_is_enabled,
@@ -471,7 +462,7 @@ static struct regulator_ops tps65912_ops_dcdc = {
 	.get_mode = tps65912_get_mode,
 	.get_voltage = tps65912_get_voltage_dcdc,
 	.set_voltage_sel = tps65912_set_voltage_sel,
-	.list_voltage = tps65912_list_voltage_dcdc,
+	.list_voltage = tps65912_list_voltage,
 };
 
 /* Operations permitted on LDOx */
@@ -481,7 +472,7 @@ static struct regulator_ops tps65912_ops_ldo = {
 	.disable = tps65912_reg_disable,
 	.get_voltage = tps65912_get_voltage_ldo,
 	.set_voltage_sel = tps65912_set_voltage_sel,
-	.list_voltage = tps65912_list_voltage_ldo,
+	.list_voltage = tps65912_list_voltage,
 };
 
 static __devinit int tps65912_probe(struct platform_device *pdev)