Commit 1aaab348 authored Mar 08, 2016 by Laxman Dewangan Committed by Mark Brown Mar 12, 2016

regulator: pwm: Fix calculation of voltage-to-duty cycle



With following equation for calculating
voltage_to_duty_cycle_percentage
	100 - (((req_uV * 100) - (min_uV * 100)) / diff);

we get 0% for max_uV and 100% for min_uV.

Correcting this to
	((req_uV * 100) - (min_uV * 100)) / diff;
 to get proper duty cycle.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent 92e963f5

drivers/regulator/pwm-regulator.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -115,7 +115,7 @@ static int pwm_voltage_to_duty_cycle_percentage(struct regulator_dev *rdev, int
		int max_uV = rdev->constraints->max_uV;
		int diff = max_uV - min_uV;

		return 100 - (((req_uV * 100) - (min_uV * 100)) / diff);
		return ((req_uV * 100) - (min_uV * 100)) / diff;
		}

		static int pwm_regulator_get_voltage(struct regulator_dev *rdev)