regulator: wm8400: Use linear ranges

Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c
index a09f03ee550621503dfbf95d457cc83de1a1cbbd..2ac7e1aceb0551a63a49e79bbea24670db85d1d0 100644 (file)
--- a/drivers/regulator/wm8400-regulator.c
+++ b/drivers/regulator/wm8400-regulator.c
@@ -19,47 +19,21 @@
 #include <linux/regulator/driver.h>
 #include <linux/mfd/wm8400-private.h>
 
-static int wm8400_ldo_list_voltage(struct regulator_dev *dev,
-                                  unsigned selector)
-{
-       if (selector > WM8400_LDO1_VSEL_MASK)
-               return -EINVAL;
-
-       if (selector < 15)
-               return 900000 + (selector * 50000);
-       else
-               return 1700000 + ((selector - 15) * 100000);
-}
-
-static int wm8400_ldo_map_voltage(struct regulator_dev *dev,
-                                 int min_uV, int max_uV)
-{
-       u16 val;
-       int volt;
-
-       if (min_uV < 900000 || min_uV > 3300000)
-               return -EINVAL;
-
-       if (min_uV < 1700000) /* Steps of 50mV from 900mV;  */
-               val = DIV_ROUND_UP(min_uV - 900000, 50000);
-       else /* Steps of 100mV from 1700mV */
-               val = DIV_ROUND_UP(min_uV - 1700000, 100000) + 15;
-
-       volt = wm8400_ldo_list_voltage(dev, val);
-       if (volt < min_uV || volt > max_uV)
-               return -EINVAL;
-
-       return val;
-}
+static const struct regulator_linear_range wm8400_ldo_ranges[] = {
+       { .min_uV =  900000, .max_uV = 1600000, .min_sel = 0, .max_sel = 14,
+         .uV_step =  50000 },
+       { .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31,
+         .uV_step = 100000 },
+};
 
 static struct regulator_ops wm8400_ldo_ops = {
        .is_enabled = regulator_is_enabled_regmap,
        .enable = regulator_enable_regmap,
        .disable = regulator_disable_regmap,
-       .list_voltage = wm8400_ldo_list_voltage,
+       .list_voltage = regulator_list_voltage_linear_range,
        .get_voltage_sel = regulator_get_voltage_sel_regmap,
        .set_voltage_sel = regulator_set_voltage_sel_regmap,
-       .map_voltage = wm8400_ldo_map_voltage,
+       .map_voltage = regulator_map_voltage_linear_range,
 };
 
 static unsigned int wm8400_dcdc_get_mode(struct regulator_dev *dev)
@@ -155,6 +129,8 @@ static struct regulator_desc regulators[] = {
                .enable_reg = WM8400_LDO1_CONTROL,
                .enable_mask = WM8400_LDO1_ENA,
                .n_voltages = WM8400_LDO1_VSEL_MASK + 1,
+               .linear_ranges = wm8400_ldo_ranges,
+               .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
                .vsel_reg = WM8400_LDO1_CONTROL,
                .vsel_mask = WM8400_LDO1_VSEL_MASK,
                .type = REGULATOR_VOLTAGE,
@@ -167,6 +143,8 @@ static struct regulator_desc regulators[] = {
                .enable_reg = WM8400_LDO2_CONTROL,
                .enable_mask = WM8400_LDO2_ENA,
                .n_voltages = WM8400_LDO2_VSEL_MASK + 1,
+               .linear_ranges = wm8400_ldo_ranges,
+               .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
                .type = REGULATOR_VOLTAGE,
                .vsel_reg = WM8400_LDO2_CONTROL,
                .vsel_mask = WM8400_LDO2_VSEL_MASK,
@@ -179,6 +157,8 @@ static struct regulator_desc regulators[] = {
                .enable_reg = WM8400_LDO3_CONTROL,
                .enable_mask = WM8400_LDO3_ENA,
                .n_voltages = WM8400_LDO3_VSEL_MASK + 1,
+               .linear_ranges = wm8400_ldo_ranges,
+               .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
                .vsel_reg = WM8400_LDO3_CONTROL,
                .vsel_mask = WM8400_LDO3_VSEL_MASK,
                .type = REGULATOR_VOLTAGE,
@@ -191,6 +171,8 @@ static struct regulator_desc regulators[] = {
                .enable_reg = WM8400_LDO4_CONTROL,
                .enable_mask = WM8400_LDO4_ENA,
                .n_voltages = WM8400_LDO4_VSEL_MASK + 1,
+               .linear_ranges = wm8400_ldo_ranges,
+               .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
                .vsel_reg = WM8400_LDO4_CONTROL,
                .vsel_mask = WM8400_LDO4_VSEL_MASK,
                .type = REGULATOR_VOLTAGE,