regulator: max77650: use vsel_step

Use the new vsel_step field in the regulator description to instruct
the regulator API on the required voltage ramping. Switch to using the
generic regmap helpers for voltage setting and remove the old set_voltage
callback that handcoded the selector stepping.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20190703161035.31808-3-brgl@bgdev.pl
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/max77650-regulator.c b/drivers/regulator/max77650-regulator.c
index b79fe93c8edb3748ba60f8bdcf74541967e6695a..e57fc9197d62077b6375006e19047f22bbff3b95 100644 (file)
--- a/drivers/regulator/max77650-regulator.c
+++ b/drivers/regulator/max77650-regulator.c
@@ -108,67 +108,6 @@ static int max77650_regulator_disable(struct regulator_dev *rdev)
                                  MAX77650_REGULATOR_DISABLED);
 }
 
-static int max77650_regulator_set_voltage_sel(struct regulator_dev *rdev,
-                                             unsigned int sel)
-{
-       struct max77650_regulator_desc *rdesc = rdev_get_drvdata(rdev);
-       int rv = 0, curr, diff;
-       bool ascending;
-
-       /*
-        * If the regulator is disabled, we can program the desired
-        * voltage right away.
-        */
-       if (!max77650_regulator_is_enabled(rdev)) {
-               if (rdesc == &max77651_SBB1_desc)
-                       return regulator_set_voltage_sel_pickable_regmap(rdev,
-                                                                        sel);
-               else
-                       return regulator_set_voltage_sel_regmap(rdev, sel);
-       }
-
-       /*
-        * Otherwise we need to manually ramp the output voltage up/down
-        * one step at a time.
-        */
-
-       if (rdesc == &max77651_SBB1_desc)
-               curr = regulator_get_voltage_sel_pickable_regmap(rdev);
-       else
-               curr = regulator_get_voltage_sel_regmap(rdev);
-
-       if (curr < 0)
-               return curr;
-
-       diff = curr - sel;
-       if (diff == 0)
-               return 0; /* Already there. */
-       else if (diff > 0)
-               ascending = false;
-       else
-               ascending = true;
-
-       /*
-        * Make sure we'll get to the right voltage and break the loop even if
-        * the selector equals 0.
-        */
-       for (ascending ? curr++ : curr--;; ascending ? curr++ : curr--) {
-               if (rdesc == &max77651_SBB1_desc)
-                       rv = regulator_set_voltage_sel_pickable_regmap(rdev,
-                                                                      curr);
-               else
-                       rv = regulator_set_voltage_sel_regmap(rdev, curr);
-
-               if (rv)
-                       return rv;
-
-               if (curr == sel)
-                       break;
-       }
-
-       return 0;
-}
-
 static const struct regulator_ops max77650_regulator_LDO_ops = {
        .is_enabled             = max77650_regulator_is_enabled,
        .enable                 = max77650_regulator_enable,
@@ -176,7 +115,7 @@ static const struct regulator_ops max77650_regulator_LDO_ops = {
        .list_voltage           = regulator_list_voltage_linear,
        .map_voltage            = regulator_map_voltage_linear,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
-       .set_voltage_sel        = max77650_regulator_set_voltage_sel,
+       .set_voltage_sel        = regulator_set_voltage_sel_regmap,
        .set_active_discharge   = regulator_set_active_discharge_regmap,
 };
 
@@ -187,7 +126,7 @@ static const struct regulator_ops max77650_regulator_SBB_ops = {
        .list_voltage           = regulator_list_voltage_linear,
        .map_voltage            = regulator_map_voltage_linear,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
-       .set_voltage_sel        = max77650_regulator_set_voltage_sel,
+       .set_voltage_sel        = regulator_set_voltage_sel_regmap,
        .get_current_limit      = regulator_get_current_limit_regmap,
        .set_current_limit      = regulator_set_current_limit_regmap,
        .set_active_discharge   = regulator_set_active_discharge_regmap,
@@ -200,7 +139,7 @@ static const struct regulator_ops max77651_SBB1_regulator_ops = {
        .disable                = max77650_regulator_disable,
        .list_voltage           = regulator_list_voltage_pickable_linear_range,
        .get_voltage_sel        = regulator_get_voltage_sel_pickable_regmap,
-       .set_voltage_sel        = max77650_regulator_set_voltage_sel,
+       .set_voltage_sel        = regulator_set_voltage_sel_pickable_regmap,
        .get_current_limit      = regulator_get_current_limit_regmap,
        .set_current_limit      = regulator_set_current_limit_regmap,
        .set_active_discharge   = regulator_set_active_discharge_regmap,
@@ -217,6 +156,7 @@ static struct max77650_regulator_desc max77650_LDO_desc = {
                .min_uV                 = 1350000,
                .uV_step                = 12500,
                .n_voltages             = 128,
+               .vsel_step              = 1,
                .vsel_mask              = MAX77650_REGULATOR_V_LDO_MASK,
                .vsel_reg               = MAX77650_REG_CNFG_LDO_A,
                .active_discharge_off   = MAX77650_REGULATOR_AD_DISABLED,
@@ -242,6 +182,7 @@ static struct max77650_regulator_desc max77650_SBB0_desc = {
                .min_uV                 = 800000,
                .uV_step                = 25000,
                .n_voltages             = 64,
+               .vsel_step              = 1,
                .vsel_mask              = MAX77650_REGULATOR_V_SBB_MASK,
                .vsel_reg               = MAX77650_REG_CNFG_SBB0_A,
                .active_discharge_off   = MAX77650_REGULATOR_AD_DISABLED,
@@ -271,6 +212,7 @@ static struct max77650_regulator_desc max77650_SBB1_desc = {
                .min_uV                 = 800000,
                .uV_step                = 12500,
                .n_voltages             = 64,
+               .vsel_step              = 1,
                .vsel_mask              = MAX77650_REGULATOR_V_SBB_MASK,
                .vsel_reg               = MAX77650_REG_CNFG_SBB1_A,
                .active_discharge_off   = MAX77650_REGULATOR_AD_DISABLED,
@@ -301,6 +243,7 @@ static struct max77650_regulator_desc max77651_SBB1_desc = {
                .linear_ranges          = max77651_sbb1_volt_ranges,
                .n_linear_ranges        = ARRAY_SIZE(max77651_sbb1_volt_ranges),
                .n_voltages             = 58,
+               .vsel_step              = 1,
                .vsel_range_mask        = MAX77651_REGULATOR_V_SBB1_RANGE_MASK,
                .vsel_range_reg         = MAX77650_REG_CNFG_SBB1_A,
                .vsel_mask              = MAX77651_REGULATOR_V_SBB1_MASK,
@@ -332,6 +275,7 @@ static struct max77650_regulator_desc max77650_SBB2_desc = {
                .min_uV                 = 800000,
                .uV_step                = 50000,
                .n_voltages             = 64,
+               .vsel_step              = 1,
                .vsel_mask              = MAX77650_REGULATOR_V_SBB_MASK,
                .vsel_reg               = MAX77650_REG_CNFG_SBB2_A,
                .active_discharge_off   = MAX77650_REGULATOR_AD_DISABLED,
@@ -361,6 +305,7 @@ static struct max77650_regulator_desc max77651_SBB2_desc = {
                .min_uV                 = 2400000,
                .uV_step                = 50000,
                .n_voltages             = 64,
+               .vsel_step              = 1,
                .vsel_mask              = MAX77650_REGULATOR_V_SBB_MASK,
                .vsel_reg               = MAX77650_REG_CNFG_SBB2_A,
                .active_discharge_off   = MAX77650_REGULATOR_AD_DISABLED,