Commit fd3ddd43 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Thierry Reding
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pwm: tegra: Implement .apply() callback 



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: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent 57c95faa

drivers/pwm/pwm-tegra.c

+27 −3
Original line number Diff line number Diff line
@@ -230,10 +230,34 @@ static void tegra_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) 
	pm_runtime_put_sync(pc->dev);

}



static int tegra_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,

			   const struct pwm_state *state)

{

	int err;

	bool enabled = pwm->state.enabled;



	if (state->polarity != PWM_POLARITY_NORMAL)

		return -EINVAL;



	if (!state->enabled) {

		if (enabled)

			tegra_pwm_disable(chip, pwm);



		return 0;

	}



	err = tegra_pwm_config(pwm->chip, pwm, state->duty_cycle, state->period);

	if (err)

		return err;



	if (!enabled)

		err = tegra_pwm_enable(chip, pwm);



	return err;

}



static const struct pwm_ops tegra_pwm_ops = {

	.config = tegra_pwm_config,

	.enable = tegra_pwm_enable,

	.disable = tegra_pwm_disable,

	.apply = tegra_pwm_apply,

	.owner = THIS_MODULE,

};