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pwm: stmpe: Implement .apply() callback

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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>
This commit is contained in:
Uwe Kleine-König 2022-05-06 16:15:35 +02:00 committed by Thierry Reding
parent b2e60b32b4
commit 57c95faabf
1 changed files with 26 additions and 3 deletions
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29
drivers/pwm/pwm-stmpe.c
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@ -259,10 +259,33 @@ static int stmpe_24xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
static int stmpe_24xx_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)
stmpe_24xx_pwm_disable(chip, pwm);
return 0;
}
err = stmpe_24xx_pwm_config(pwm->chip, pwm, state->duty_cycle, state->period);
if (err)
return err;
if (!pwm->state.enabled)
err = stmpe_24xx_pwm_enable(chip, pwm);
return err;
}
static const struct pwm_ops stmpe_24xx_pwm_ops = {
.config = stmpe_24xx_pwm_config,
.enable = stmpe_24xx_pwm_enable,
.disable = stmpe_24xx_pwm_disable,
.apply = stmpe_24xx_pwm_apply,
.owner = THIS_MODULE,
};