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pwm: lpc32xx: 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
2022-05-07 10:29:01 +02:00
committed by Thierry Reding
parent fd3ddd4355
commit 5fa3b87fe8
1 changed files with 26 additions and 3 deletions
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29
drivers/pwm/pwm-lpc32xx.c
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@@ -88,10 +88,33 @@ static void lpc32xx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
clk_disable_unprepare(lpc32xx->clk); clk_disable_unprepare(lpc32xx->clk);
} }
static int lpc32xx_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)
lpc32xx_pwm_disable(chip, pwm);
return 0;
}
err = lpc32xx_pwm_config(pwm->chip, pwm, state->duty_cycle, state->period);
if (err)
return err;
if (!pwm->state.enabled)
err = lpc32xx_pwm_enable(chip, pwm);
return err;
}
static const struct pwm_ops lpc32xx_pwm_ops = { static const struct pwm_ops lpc32xx_pwm_ops = {
.config = lpc32xx_pwm_config, .apply = lpc32xx_pwm_apply,
.enable = lpc32xx_pwm_enable,
.disable = lpc32xx_pwm_disable,
.owner = THIS_MODULE, .owner = THIS_MODULE,
}; };