pwm: samsung: 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/421ee291a065aeae7a1552f22da4173313e789ad.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
index ecd612adf19d289aee9d7716406f1cf3913cb7d6..cabdcdf37ec9941d50ab2dfad64211a82598bba2 100644 (file)
--- a/drivers/pwm/pwm-samsung.c
+++ b/drivers/pwm/pwm-samsung.c
@@ -198,12 +198,12 @@ static unsigned long pwm_samsung_calc_tin(struct pwm_chip *chip,
                                return rate;
                }
 
-               dev_warn(chip->dev,
+               dev_warn(pwmchip_parent(chip),
                        "tclk of PWM %d is inoperational, using tdiv\n", chan);
        }
 
        rate = pwm_samsung_get_tin_rate(our_chip, chan);
-       dev_dbg(chip->dev, "tin parent at %lu\n", rate);
+       dev_dbg(pwmchip_parent(chip), "tin parent at %lu\n", rate);
 
        /*
         * Compare minimum PWM frequency that can be achieved with possible
@@ -233,7 +233,7 @@ static int pwm_samsung_request(struct pwm_chip *chip, struct pwm_device *pwm)
        struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);
 
        if (!(our_chip->variant.output_mask & BIT(pwm->hwpwm))) {
-               dev_warn(chip->dev,
+               dev_warn(pwmchip_parent(chip),
                        "tried to request PWM channel %d without output\n",
                        pwm->hwpwm);
                return -EINVAL;
@@ -327,12 +327,12 @@ static int __pwm_samsung_config(struct pwm_chip *chip, struct pwm_device *pwm,
 
                period = NSEC_PER_SEC / period_ns;
 
-               dev_dbg(chip->dev, "duty_ns=%d, period_ns=%d (%u)\n",
+               dev_dbg(pwmchip_parent(chip), "duty_ns=%d, period_ns=%d (%u)\n",
                                                duty_ns, period_ns, period);
 
                tin_rate = pwm_samsung_calc_tin(chip, pwm->hwpwm, period);
 
-               dev_dbg(chip->dev, "tin_rate=%lu\n", tin_rate);
+               dev_dbg(pwmchip_parent(chip), "tin_rate=%lu\n", tin_rate);
 
                tin_ns = NSEC_PER_SEC / tin_rate;
                tcnt = period_ns / tin_ns;
@@ -356,7 +356,7 @@ static int __pwm_samsung_config(struct pwm_chip *chip, struct pwm_device *pwm,
        /* -1UL will give 100% duty. */
        --tcmp;
 
-       dev_dbg(chip->dev, "tin_ns=%u, tcmp=%u/%u\n", tin_ns, tcmp, tcnt);
+       dev_dbg(pwmchip_parent(chip), "tin_ns=%u, tcmp=%u/%u\n", tin_ns, tcmp, tcnt);
 
        /* Update PWM registers. */
        writel(tcnt, our_chip->base + REG_TCNTB(pwm->hwpwm));
@@ -368,7 +368,7 @@ static int __pwm_samsung_config(struct pwm_chip *chip, struct pwm_device *pwm,
         * shortly afer this update (before it autoreloaded the new values).
         */
        if (oldtcmp == (u32) -1) {
-               dev_dbg(chip->dev, "Forcing manual update");
+               dev_dbg(pwmchip_parent(chip), "Forcing manual update");
                pwm_samsung_manual_update(our_chip, pwm);
        }
 
@@ -510,7 +510,7 @@ MODULE_DEVICE_TABLE(of, samsung_pwm_matches);
 static int pwm_samsung_parse_dt(struct pwm_chip *chip)
 {
        struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);
-       struct device_node *np = chip->dev->of_node;
+       struct device_node *np = pwmchip_parent(chip)->of_node;
        const struct of_device_id *match;
        struct property *prop;
        const __be32 *cur;
@@ -524,7 +524,7 @@ static int pwm_samsung_parse_dt(struct pwm_chip *chip)
 
        of_property_for_each_u32(np, "samsung,pwm-outputs", prop, cur, val) {
                if (val >= SAMSUNG_PWM_NUM) {
-                       dev_err(chip->dev,
+                       dev_err(pwmchip_parent(chip),
                                "%s: invalid channel index in samsung,pwm-outputs property\n",
                                                                __func__);
                        continue;