mirror of
https://github.com/coolsnowwolf/lede.git
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24 lines
843 B
Diff
24 lines
843 B
Diff
--- a/drivers/pwm/pwm-meson.c
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+++ b/drivers/pwm/pwm-meson.c
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@@ -351,8 +351,18 @@ static int meson_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
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channel->lo = FIELD_GET(PWM_LOW_MASK, value);
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channel->hi = FIELD_GET(PWM_HIGH_MASK, value);
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- state->period = meson_pwm_cnt_to_ns(chip, pwm, channel->lo + channel->hi);
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- state->duty_cycle = meson_pwm_cnt_to_ns(chip, pwm, channel->hi);
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+ if (channel->lo == 0) {
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+ state->period = meson_pwm_cnt_to_ns(chip, pwm, channel->hi);
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+ state->duty_cycle = state->period;
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+ } else if (channel->lo >= channel->hi) {
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+ state->period = meson_pwm_cnt_to_ns(chip, pwm,
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+ channel->lo + channel->hi);
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+ state->duty_cycle = meson_pwm_cnt_to_ns(chip, pwm,
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+ channel->hi);
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+ } else {
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+ state->period = 0;
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+ state->duty_cycle = 0;
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+ }
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state->polarity = PWM_POLARITY_NORMAL;
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