If the alpha property is not added to a plane, a default value will be used, which can result in a non-visible layer if the alpha is initialised as 0.
Provide an alpha blend property on all planes. Fixes: 161ad653d6c9 ("drm: rcar-du: Use __drm_atomic_helper_plane_reset instead of copying the logic") Signed-off-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com> --- drivers/gpu/drm/rcar-du/rcar_du_plane.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index 9e07758a755c..72399a19d8a6 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -783,13 +783,18 @@ int rcar_du_planes_init(struct rcar_du_group *rgrp) drm_plane_helper_add(&plane->plane, &rcar_du_plane_helper_funcs); + /* + * The alpha property needs to be initialised on all planes + * to ensure the correct setting at the output. + */ + drm_plane_create_alpha_property(&plane->plane); + if (type == DRM_PLANE_TYPE_PRIMARY) continue; drm_object_attach_property(&plane->plane.base, rcdu->props.colorkey, RCAR_DU_COLORKEY_NONE); - drm_plane_create_alpha_property(&plane->plane); drm_plane_create_zpos_property(&plane->plane, 1, 1, 7); } -- 2.17.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel