Add immutable zpos property to primary and overlay planes to specify
the current fixed zpos position.
Fixes: f9a2348196d1 ("drm/meson: Support Overlay plane for video rendering")
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
---
drivers/gpu/drm/meson/meson_overlay.c | 3 +++
drivers/gpu/drm/meson/meson_plane.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/meson/meson_overlay.c b/drivers/gpu/drm/meson/meson_overlay.c
index bdbf925ff3e8..dceb3df5e652 100644
--- a/drivers/gpu/drm/meson/meson_overlay.c
+++ b/drivers/gpu/drm/meson/meson_overlay.c
@@ -578,6 +578,9 @@ int meson_overlay_create(struct meson_drm *priv)
drm_plane_helper_add(plane, &meson_overlay_helper_funcs);
+ /* For now, VD Overlay plane is always on the back */
+ drm_plane_create_zpos_immutable_property(plane, 0);
+
priv->overlay_plane = plane;
DRM_DEBUG_DRIVER("\n");
diff --git a/drivers/gpu/drm/meson/meson_plane.c b/drivers/gpu/drm/meson/meson_plane.c
index b8f6b08a89a6..2f7f4dfce45b 100644
--- a/drivers/gpu/drm/meson/meson_plane.c
+++ b/drivers/gpu/drm/meson/meson_plane.c
@@ -399,6 +399,9 @@ int meson_plane_create(struct meson_drm *priv)
drm_plane_helper_add(plane, &meson_plane_helper_funcs);
+ /* For now, OSD Primary plane is always on the front */
+ drm_plane_create_zpos_immutable_property(plane, 1);
+
priv->primary_plane = plane;
return 0;
--
2.21.0
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