[PATCH 5/7] PWM: core: add definition for PWM_POLARITY_INVERSED

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

PWM_POLARITY_INVERTED is the macro used in the DT binding, while
PWM_POLARITY_INVERSED is the Linux driver macro that it is translated
to.

They are the same value, but Linux PWM chip drivers will use the latter,
so define it as well.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/pwm/core.c |  2 +-
 include/pwm.h      | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 7e090cc144af..69724e1a5c26 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -244,7 +244,7 @@ struct pwm_device *of_pwm_request(struct device_node *np, const char *con_id)
 	pwm->args.polarity = PWM_POLARITY_NORMAL;
 
 	if (args.args_count > 2 && args.args[2] & PWM_POLARITY_INVERTED)
-		pwm->args.polarity = PWM_POLARITY_INVERTED;
+		pwm->args.polarity = PWM_POLARITY_INVERSED;
 
 	ret = __pwm_request(pwm);
 	if (ret)
diff --git a/include/pwm.h b/include/pwm.h
index e8b0f2c96263..b90ac1de4220 100644
--- a/include/pwm.h
+++ b/include/pwm.h
@@ -8,7 +8,19 @@
 struct pwm_device;
 struct device;
 
-#define	PWM_POLARITY_NORMAL	0
+/**
+ * enum pwm_polarity - polarity of a PWM signal
+ * @PWM_POLARITY_NORMAL: a high signal for the duration of the duty-
+ * cycle, followed by a low signal for the remainder of the pulse
+ * period
+ * @PWM_POLARITY_INVERSED: a low signal for the duration of the duty-
+ * cycle, followed by a high signal for the remainder of the pulse
+ * period
+ */
+enum pwm_polarity {
+	PWM_POLARITY_NORMAL,
+	PWM_POLARITY_INVERSED,
+};
 
 /*
  * struct pwm_state - state of a PWM channel
-- 
2.39.2