pwm: lpss: Make use of pwmchip_parent() accessor

struct pwm_chip::dev is about to change. To not have to touch this
driver in the same commit as struct pwm_chip::dev, use the accessor
function provided for exactly this purpose.

Link: https://lore.kernel.org/r/77617ba84bed7807a05779109432a292dd79f72f.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index a6ea3ce..394c768 100644 (file)
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -106,7 +106,7 @@ static int pwm_lpss_wait_for_update(struct pwm_device *pwm)
         */
        err = readl_poll_timeout(addr, val, !(val & PWM_SW_UPDATE), 40, ms);
        if (err)
-               dev_err(pwm->chip->dev, "PWM_SW_UPDATE was not cleared\n");
+               dev_err(pwmchip_parent(pwm->chip), "PWM_SW_UPDATE was not cleared\n");
 
        return err;
 }
@@ -114,7 +114,7 @@ static int pwm_lpss_wait_for_update(struct pwm_device *pwm)
 static inline int pwm_lpss_is_updating(struct pwm_device *pwm)
 {
        if (pwm_lpss_read(pwm) & PWM_SW_UPDATE) {
-               dev_err(pwm->chip->dev, "PWM_SW_UPDATE is still set, skipping update\n");
+               dev_err(pwmchip_parent(pwm->chip), "PWM_SW_UPDATE is still set, skipping update\n");
                return -EBUSY;
        }
 
@@ -190,16 +190,16 @@ static int pwm_lpss_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 
        if (state->enabled) {
                if (!pwm_is_enabled(pwm)) {
-                       pm_runtime_get_sync(chip->dev);
+                       pm_runtime_get_sync(pwmchip_parent(chip));
                        ret = pwm_lpss_prepare_enable(lpwm, pwm, state);
                        if (ret)
-                               pm_runtime_put(chip->dev);
+                               pm_runtime_put(pwmchip_parent(chip));
                } else {
                        ret = pwm_lpss_prepare_enable(lpwm, pwm, state);
                }
        } else if (pwm_is_enabled(pwm)) {
                pwm_lpss_write(pwm, pwm_lpss_read(pwm) & ~PWM_ENABLE);
-               pm_runtime_put(chip->dev);
+               pm_runtime_put(pwmchip_parent(chip));
        }
 
        return ret;
@@ -213,7 +213,7 @@ static int pwm_lpss_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
        unsigned long long base_unit, freq, on_time_div;
        u32 ctrl;
 
-       pm_runtime_get_sync(chip->dev);
+       pm_runtime_get_sync(pwmchip_parent(chip));
 
        base_unit_range = BIT(lpwm->info->base_unit_bits);
 
@@ -235,7 +235,7 @@ static int pwm_lpss_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
        state->polarity = PWM_POLARITY_NORMAL;
        state->enabled = !!(ctrl & PWM_ENABLE);
 
-       pm_runtime_put(chip->dev);
+       pm_runtime_put(pwmchip_parent(chip));
 
        return 0;
 }