shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 19:08:57 +09:00
Code Issues Packages Projects Releases Wiki Activity

regulator: pwm-regulator: Calculate the output voltage for disabled PWMs

Browse Source 
commit 6a7d11efd6915d80a025f2a0be4ae09d797b91ec upstream.

If a PWM output is disabled then it's voltage has to be calculated
based on a zero duty cycle (for normal polarity) or duty cycle being
equal to the PWM period (for inverted polarity). Add support for this
to pwm_regulator_get_voltage().

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://msgid.link/r/20240113224628.377993-3-martin.blumenstingl@googlemail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Blumenstingl
2024-01-13 23:46:27 +01:00
committed by Greg Kroah-Hartman
parent 7e5ec0059e
commit cad3ec23e3
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/regulator/pwm-regulator.c
View File

@@ -157,6 +157,13 @@ static int pwm_regulator_get_voltage(struct regulator_dev *rdev)
pwm_get_state(drvdata->pwm, &pstate);
if (!pstate.enabled) {
if (pstate.polarity == PWM_POLARITY_INVERSED)
pstate.duty_cycle = pstate.period;
else
pstate.duty_cycle = 0;
}
voltage = pwm_get_relative_duty_cycle(&pstate, duty_unit);
if (voltage < min(max_uV_duty, min_uV_duty) ||
voltage > max(max_uV_duty, min_uV_duty))