[PATCH 2/2] drm: rcar-du: Disable alpha blending for DU planes used with VSP

[Tomi Valkeinen]

On 22/02/2023 07:06, Laurent Pinchart wrote:
> When the input to a DU channel comes from a VSP, the DU doesn't perform
> any blending operation. Select XRGB8888 instead of ARGB8888 to ensure
> that the corresponding registers don't get written with invalid values.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
> ---
>   drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> index fe90be51d64e..45c05d0ffc70 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> @@ -73,7 +73,7 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
>   			.src.y2 = mode->vdisplay << 16,
>   			.zpos = 0,
>   		},
> -		.format = rcar_du_format_info(DRM_FORMAT_ARGB8888),
> +		.format = rcar_du_format_info(DRM_FORMAT_XRGB8888),
>   		.source = RCAR_DU_PLANE_VSPD1,
>   		.colorkey = 0,
>   	};

Reviewed-by: Tomi Valkeinen <tomi.valkeinen at ideasonboard.com>

  Tomi