[PATCH v5 003/111] pwm: Provide a macro to get the parent device of a given chip

[Uwe Kleine-König]

Currently a pwm_chip stores in its struct device *dev member a pointer
to the parent device. Preparing a change that embeds a full struct
device in struct pwm_chip, this accessor macro should be used in all
drivers directly accessing chip->dev now. This way struct pwm_chip and
this macro can be changed without having to touch all drivers in the
same change set.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
 include/linux/pwm.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 8ffe9ae7a23a..d7966918f301 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -289,6 +289,11 @@ struct pwm_chip {
 	struct pwm_device *pwms;
 };
 
+static inline struct device *pwmchip_parent(struct pwm_chip *chip)
+{
+	return chip->dev;
+}
+
 #if IS_ENABLED(CONFIG_PWM)
 /* PWM user APIs */
 int pwm_apply_might_sleep(struct pwm_device *pwm, const struct pwm_state *state);
-- 
2.43.0