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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2022-05-06 18:48:06 +0200 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2022-05-20 16:28:49 +0200 |
| commit | fd3ddd4355c0e5388b40d48321e2e834393a4912 (patch) | |
| tree | 8ee796da05afb4320d7d76428579723b1aa3673d /drivers/pwm | |
| parent | 57c95faabf094192049bffa5599ae6ab5ff88edf (diff) | |
| download | linux-stable-fd3ddd4355c0e5388b40d48321e2e834393a4912.tar.gz linux-stable-fd3ddd4355c0e5388b40d48321e2e834393a4912.tar.bz2 linux-stable-fd3ddd4355c0e5388b40d48321e2e834393a4912.zip | |
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: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-tegra.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c index 7fc03a9ec154..dad9978c9186 100644 --- a/drivers/pwm/pwm-tegra.c +++ b/drivers/pwm/pwm-tegra.c @@ -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, }; |