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

[Laurent Pinchart]

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,
 	};
-- 
Regards,

Laurent Pinchart