* [U-Boot] [PATCH v2] video: backlight: fix pwm invertation
@ 2019-07-02 20:08 marvin24 at posteo.de
2019-07-02 21:04 ` Anatolij Gustschin
2019-07-07 13:50 ` Anatolij Gustschin
0 siblings, 2 replies; 3+ messages in thread
From: marvin24 at posteo.de @ 2019-07-02 20:08 UTC (permalink / raw)
To: u-boot
Fixes: 57e7775413 ("video: backlight: Parse PWM polarity cell")
set_pwm will always fail with -ENOSYS if pwm_set_invert is not implemented,
leaving the backlight dark. Fix this by returning no error if
pwm_set_invert is not implemented and no polarity change is requested.
v2: simplify logic
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
---
drivers/video/pwm_backlight.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/video/pwm_backlight.c b/drivers/video/pwm_backlight.c
index a587977c22..ad20bf2441 100644
--- a/drivers/video/pwm_backlight.c
+++ b/drivers/video/pwm_backlight.c
@@ -67,6 +67,9 @@ static int set_pwm(struct pwm_backlight_priv *priv)
return log_ret(ret);
ret = pwm_set_invert(priv->pwm, priv->channel, priv->polarity);
+ if (ret == -ENOSYS && !priv->polarity)
+ ret = 0;
+
return log_ret(ret);
}
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [U-Boot] [PATCH v2] video: backlight: fix pwm invertation
2019-07-02 20:08 [U-Boot] [PATCH v2] video: backlight: fix pwm invertation marvin24 at posteo.de
@ 2019-07-02 21:04 ` Anatolij Gustschin
2019-07-07 13:50 ` Anatolij Gustschin
1 sibling, 0 replies; 3+ messages in thread
From: Anatolij Gustschin @ 2019-07-02 21:04 UTC (permalink / raw)
To: u-boot
On Tue, 02 Jul 2019 22:08:33 +0200
marvin24 at posteo.de marvin24 at posteo.de wrote:
> Fixes: 57e7775413 ("video: backlight: Parse PWM polarity cell")
>
> set_pwm will always fail with -ENOSYS if pwm_set_invert is not implemented,
> leaving the backlight dark. Fix this by returning no error if
> pwm_set_invert is not implemented and no polarity change is requested.
>
> v2: simplify logic
>
> Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] [PATCH v2] video: backlight: fix pwm invertation
2019-07-02 20:08 [U-Boot] [PATCH v2] video: backlight: fix pwm invertation marvin24 at posteo.de
2019-07-02 21:04 ` Anatolij Gustschin
@ 2019-07-07 13:50 ` Anatolij Gustschin
1 sibling, 0 replies; 3+ messages in thread
From: Anatolij Gustschin @ 2019-07-07 13:50 UTC (permalink / raw)
To: u-boot
On Tue, 02 Jul 2019 22:08:33 +0200
marvin24 at posteo.de marvin24 at posteo.de wrote:
...
> drivers/video/pwm_backlight.c | 3 +++
> 1 file changed, 3 insertions(+)
Applied to u-boot-video/master, thanks!
--
Anatolij
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-07-02 20:08 [U-Boot] [PATCH v2] video: backlight: fix pwm invertation marvin24 at posteo.de
2019-07-02 21:04 ` Anatolij Gustschin
2019-07-07 13:50 ` Anatolij Gustschin
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