drm/sun4i: backend: Make zpos configurable

Now that we have everything in place, we can make zpos configurable now.
Change the zpos property from an immutable one to a regular.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0ab187956855db86972d936e6751181649e0d035.1518802627.git-series.maxime.ripard@bootlin.com

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index 85cc7e9461b3..33ad377569ec 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -163,6 +163,9 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
                              &sun4i_backend_layer_helper_funcs);
         layer->backend = backend;
 
+        drm_plane_create_zpos_property(&layer->plane, 0, 0,
+                                       SUN4I_BACKEND_NUM_LAYERS - 1);
+
         return layer;
 }
 
@@ -190,8 +193,6 @@ struct drm_plane **sun4i_layers_init(struct drm_device *drm,
                         return ERR_CAST(layer);
                 };
 
-                drm_plane_create_zpos_immutable_property(&layer->plane, i);
-
                 layer->id = i;
                 planes[i] = &layer->plane;
         };