Commit 011e7631 authored Jul 01, 2015 by Boris Brezillon Committed by Thierry Reding Jul 20, 2015

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 <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

parent a1cf4217

include/linux/pwm.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -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