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authorUwe Kleine-König2022-05-07 10:29:01 +0200
committerThierry Reding2022-05-20 16:29:01 +0200
commit5fa3b87fe8fb1ce941c6418539f7b8062c0dea9c (patch)
treee81206fd0f0bbaa4e73ef68b61fa6c4a0f6aea65 /drivers/pwm/pwm-lpc32xx.c
parentfd3ddd4355c0e5388b40d48321e2e834393a4912 (diff)
pwm: lpc32xx: 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/pwm-lpc32xx.c')
-rw-r--r--drivers/pwm/pwm-lpc32xx.c29
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c
index ddeab5687cb8..86a0ea0f6955 100644
--- a/drivers/pwm/pwm-lpc32xx.c
+++ b/drivers/pwm/pwm-lpc32xx.c
@@ -88,10 +88,33 @@ static void lpc32xx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
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 = {
- .config = lpc32xx_pwm_config,
- .enable = lpc32xx_pwm_enable,
- .disable = lpc32xx_pwm_disable,
+ .apply = lpc32xx_pwm_apply,
.owner = THIS_MODULE,
};