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Commit 2a668a8b authored by Paul Walmsley's avatar Paul Walmsley Committed by Mark Brown
Browse files

regulator: core: add regulator_get_linear_step() 



Add regulator_get_linear_step(), which returns the voltage step size
between VSEL values for linear regulators.  This is intended for use
by regulator consumers which build their own voltage-to-VSEL tables.

Signed-off-by: default avatarPaul Walmsley <pwalmsley@nvidia.com>
Reviewed-by: default avatarAndrew Chew <achew@nvidia.com>
Cc: Matthew Longnecker <mlongnecker@nvidia.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent d683b96b

drivers/regulator/core.c

+15 −0
Original line number Diff line number Diff line
@@ -2134,6 +2134,21 @@ int regulator_list_voltage(struct regulator *regulator, unsigned selector) 
}

EXPORT_SYMBOL_GPL(regulator_list_voltage);



/**

 * regulator_get_linear_step - return the voltage step size between VSEL values

 * @regulator: regulator source

 *

 * Returns the voltage step size between VSEL values for linear

 * regulators, or return 0 if the regulator isn't a linear regulator.

 */

unsigned int regulator_get_linear_step(struct regulator *regulator)

{

	struct regulator_dev *rdev = regulator->rdev;



	return rdev->desc->uV_step;

}

EXPORT_SYMBOL_GPL(regulator_get_linear_step);



/**

 * regulator_is_supported_voltage - check if a voltage range can be supported

 *

include/linux/regulator/consumer.h

+1 −0
Original line number Diff line number Diff line
@@ -165,6 +165,7 @@ int regulator_count_voltages(struct regulator *regulator); 
int regulator_list_voltage(struct regulator *regulator, unsigned selector);

int regulator_is_supported_voltage(struct regulator *regulator,

				   int min_uV, int max_uV);

unsigned int regulator_get_linear_step(struct regulator *regulator);

int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV);

int regulator_set_voltage_time(struct regulator *regulator,

			       int old_uV, int new_uV);