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

Mukesh Ojha
2019-03-29T21:33:03Z

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@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)