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Commit 5c99a7b1 authored by Philipp Zabel's avatar Philipp Zabel Committed by Mark Brown
Browse files

regulator: da9052: Add ramp speed information for the DVC regulators 



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: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent b327bcc0

drivers/regulator/da9052-regulator.c

+27 −0
Original line number Diff line number Diff line
@@ -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,