[PATCH] drm/stm: ltdc: fix data enable polarity

Mukesh Ojha mojha at codeaurora.org
Fri Mar 29 14:32:41 PDT 2019


On 3/29/2019 9:20 PM, Yannick Fertré wrote:
> Wrong DISPLAY_FLAGS used to set the data enable polarity.
Used or checked?
Can you also explain how it is wrong to check against this FLAG in commit?
>
> Signed-off-by: Yannick Fertré <yannick.fertre at st.com>
> ---
>   drivers/gpu/drm/stm/ltdc.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
> index b1741a9..6ba326a 100644
> --- a/drivers/gpu/drm/stm/ltdc.c
> +++ b/drivers/gpu/drm/stm/ltdc.c
> @@ -555,7 +555,7 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
>   	if (vm.flags & DISPLAY_FLAGS_VSYNC_HIGH)
>   		val |= GCR_VSPOL;
>   
> -	if (vm.flags & DISPLAY_FLAGS_DE_HIGH)
> +	if (vm.flags & DISPLAY_FLAGS_DE_LOW)
>   		val |= GCR_DEPOL;
>   
>   	if (vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)



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