From: Boris Brezillon Date: Wed, 1 Jul 2015 08:21:49 +0000 (+0200) Subject: pwm: Add pwm_get_polarity() helper function X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=011e76314818b6a24d5347b2d83b8a577e6aaae6;p=linux-beck.git pwm: Add pwm_get_polarity() helper function Some drivers are directly accessing the ->polarity field in pwm_device. Add a helper to retrieve the current polarity so that we can easily move this field elsewhere (required to support atomic update). Signed-off-by: Boris Brezillon Signed-off-by: Thierry Reding --- diff --git a/include/linux/pwm.h b/include/linux/pwm.h index d8f691339a45..6f286df30021 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -124,6 +124,11 @@ static inline unsigned int pwm_get_duty_cycle(const struct pwm_device *pwm) */ int pwm_set_polarity(struct pwm_device *pwm, enum pwm_polarity polarity); +static inline enum pwm_polarity pwm_get_polarity(const struct pwm_device *pwm) +{ + return pwm ? pwm->polarity : PWM_POLARITY_NORMAL; +} + /** * struct pwm_ops - PWM controller operations * @request: optional hook for requesting a PWM