Commit 01ccf903 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Thierry Reding

pwm: Let pwm_get_state() return the last implemented state

When pwm_apply_state() is called the lowlevel driver usually has to
apply some rounding because the hardware doesn't support nanosecond
resolution. So let pwm_get_state() return the actually implemented state
instead of the last applied one if possible.
Signed-off-by: default avatarUwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent fc3c5512
......@@ -474,6 +474,13 @@ int pwm_apply_state(struct pwm_device *pwm, struct pwm_state *state)
if (err)
return err;
/*
* .apply might have to round some values in *state, if possible
* read the actually implemented value back.
*/
if (chip->ops->get_state)
chip->ops->get_state(chip, pwm, &pwm->state);
else
pwm->state = *state;
} else {
/*
......
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