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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2022-05-06 18:48:06 +0200
committerThierry Reding <thierry.reding@gmail.com>2022-05-20 16:28:49 +0200
commitfd3ddd4355c0e5388b40d48321e2e834393a4912 (patch)
tree8ee796da05afb4320d7d76428579723b1aa3673d /drivers/pwm
parent57c95faabf094192049bffa5599ae6ab5ff88edf (diff)
downloadlinux-fd3ddd4355c0e5388b40d48321e2e834393a4912.tar.bz2
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.c30
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,
};