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| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2024-01-13 23:46:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-24 08:53:21 +0200 |
| commit | cad3ec23e398542c28283bcf3708dc4b71c2eb75 (patch) | |
| tree | 5cfa85dbfbceb399352c7418ea49097b673ce9b3 /drivers/regulator | |
| parent | 7e5ec0059e4dddb2cc373cff594a179c04b90e8d (diff) | |
| download | linux-cad3ec23e398542c28283bcf3708dc4b71c2eb75.tar.gz linux-cad3ec23e398542c28283bcf3708dc4b71c2eb75.tar.bz2 linux-cad3ec23e398542c28283bcf3708dc4b71c2eb75.zip | |
regulator: pwm-regulator: Calculate the output voltage for disabled PWMs
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>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/pwm-regulator.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c index 226ca4c62673..d27b9a7a30c9 100644 --- a/drivers/regulator/pwm-regulator.c +++ b/drivers/regulator/pwm-regulator.c @@ -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)) |