From 5c99a7b1f0dd460140f229b9c5a89e6d5880aa81 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 6 Feb 2014 15:35:21 +0100 Subject: [PATCH] regulator: da9052: Add ramp speed information for the DVC regulators MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Some LDOs and DCDCs have a fixed ramp speed of 6.25 mV/µs. This patch adds the set_voltage_time_sel function to let consumers know about this. Signed-off-by: Philipp Zabel Signed-off-by: Mark Brown --- drivers/regulator/da9052-regulator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c index 889c7c9b9f15..fdb6ea8ae7e6 100644 --- a/drivers/regulator/da9052-regulator.c +++ b/drivers/regulator/da9052-regulator.c @@ -240,6 +240,31 @@ static int da9052_regulator_set_voltage_sel(struct regulator_dev *rdev, return ret; } +static int da9052_regulator_set_voltage_time_sel(struct regulator_dev *rdev, + unsigned int old_sel, + unsigned int new_sel) +{ + struct da9052_regulator *regulator = rdev_get_drvdata(rdev); + struct da9052_regulator_info *info = regulator->info; + int id = rdev_get_id(rdev); + int ret = 0; + + /* The DVC controlled LDOs and DCDCs ramp with 6.25mV/µs after enabling + * the activate bit. + */ + switch (id) { + case DA9052_ID_BUCK1: + case DA9052_ID_BUCK2: + case DA9052_ID_BUCK3: + case DA9052_ID_LDO2: + case DA9052_ID_LDO3: + ret = (new_sel - old_sel) * info->step_uV / 6250; + break; + } + + return ret; +} + static struct regulator_ops da9052_dcdc_ops = { .get_current_limit = da9052_dcdc_get_current_limit, .set_current_limit = da9052_dcdc_set_current_limit, @@ -248,6 +273,7 @@ static struct regulator_ops da9052_dcdc_ops = { .map_voltage = da9052_map_voltage, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = da9052_regulator_set_voltage_sel, + .set_voltage_time_sel = da9052_regulator_set_voltage_time_sel, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, @@ -258,6 +284,7 @@ static struct regulator_ops da9052_ldo_ops = { .map_voltage = da9052_map_voltage, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = da9052_regulator_set_voltage_sel, + .set_voltage_time_sel = da9052_regulator_set_voltage_time_sel, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, -- 2.20.1