pwm: meson: 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/02d5f32001c4d0817fa79f5831cfd16b7e345f00.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 7ce4181..8f67d6b 100644 (file)
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -122,7 +122,7 @@ static int meson_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
 {
        struct meson_pwm *meson = to_meson_pwm(chip);
        struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];
-       struct device *dev = chip->dev;
+       struct device *dev = pwmchip_parent(chip);
        int err;
 
        err = clk_prepare_enable(channel->clk);
@@ -170,19 +170,19 @@ static int meson_pwm_calc(struct pwm_chip *chip, struct pwm_device *pwm,
 
        fin_freq = clk_round_rate(channel->clk, freq);
        if (fin_freq == 0) {
-               dev_err(chip->dev, "invalid source clock frequency\n");
+               dev_err(pwmchip_parent(chip), "invalid source clock frequency\n");
                return -EINVAL;
        }
 
-       dev_dbg(chip->dev, "fin_freq: %lu Hz\n", fin_freq);
+       dev_dbg(pwmchip_parent(chip), "fin_freq: %lu Hz\n", fin_freq);
 
        cnt = div_u64(fin_freq * period, NSEC_PER_SEC);
        if (cnt > 0xffff) {
-               dev_err(chip->dev, "unable to get period cnt\n");
+               dev_err(pwmchip_parent(chip), "unable to get period cnt\n");
                return -EINVAL;
        }
 
-       dev_dbg(chip->dev, "period=%llu cnt=%u\n", period, cnt);
+       dev_dbg(pwmchip_parent(chip), "period=%llu cnt=%u\n", period, cnt);
 
        if (duty == period) {
                channel->hi = cnt;
@@ -193,7 +193,7 @@ static int meson_pwm_calc(struct pwm_chip *chip, struct pwm_device *pwm,
        } else {
                duty_cnt = div_u64(fin_freq * duty, NSEC_PER_SEC);
 
-               dev_dbg(chip->dev, "duty=%llu duty_cnt=%u\n", duty, duty_cnt);
+               dev_dbg(pwmchip_parent(chip), "duty=%llu duty_cnt=%u\n", duty, duty_cnt);
 
                channel->hi = duty_cnt;
                channel->lo = cnt - duty_cnt;
@@ -217,7 +217,7 @@ static void meson_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 
        err = clk_set_rate(channel->clk, channel->rate);
        if (err)
-               dev_err(chip->dev, "setting clock rate failed\n");
+               dev_err(pwmchip_parent(chip), "setting clock rate failed\n");
 
        spin_lock_irqsave(&meson->lock, flags);
 
@@ -439,7 +439,7 @@ static int meson_pwm_init_channels(struct pwm_chip *chip)
 {
        struct meson_pwm *meson = to_meson_pwm(chip);
        struct clk_parent_data mux_parent_data[MESON_MAX_MUX_PARENTS] = {};
-       struct device *dev = chip->dev;
+       struct device *dev = pwmchip_parent(chip);
        unsigned int i;
        char name[255];
        int err;