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pwm: sti: Implement .apply() callback

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[ Upstream commit b2e60b32b4 ]

To eventually get rid of all legacy drivers convert this driver to the
modern world implementing .apply().
This just pushed a variant of pwm_apply_legacy() into the driver that was
slightly simplified because the driver doesn't provide a .set_polarity()
callback.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 5f623835584f ("pwm: sti: Fix capture for st,pwm-num-chan < st,capture-num-chan")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Uwe Kleine-König
2022-05-06 16:09:52 +02:00
committed by Sasha Levin
parent e888c4461e
commit 55908ea981
1 changed files with 26 additions and 3 deletions
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29
drivers/pwm/pwm-sti.c
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@@ -392,11 +392,34 @@ out:
return ret;
}
static int sti_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
const struct pwm_state *state)
{
int err;
if (state->polarity != PWM_POLARITY_NORMAL)
return -EINVAL;
if (!state->enabled) {
if (pwm->state.enabled)
sti_pwm_disable(chip, pwm);
return 0;
}
err = sti_pwm_config(pwm->chip, pwm, state->duty_cycle, state->period);
if (err)
return err;
if (!pwm->state.enabled)
err = sti_pwm_enable(chip, pwm);
return err;
}
static const struct pwm_ops sti_pwm_ops = {
.capture = sti_pwm_capture,
.config = sti_pwm_config,
.enable = sti_pwm_enable,
.disable = sti_pwm_disable,
.apply = sti_pwm_apply,
.free = sti_pwm_free,
.owner = THIS_MODULE,
};