Some drivers are directly accessing the ->polarity field in pwm_device.
Add an 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@xxxxxxxxxxxxxxxxxx>
---
include/linux/pwm.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index d8f6913..6f286df 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
--
1.9.1
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