85016f66af85 ("drm/sun4i: Return if frontend is not present")
134592da021e ("drm/sun4i: layer: support just backend formats when frontend is unavailable")
e2b1d3d9ff5b ("drm/sun4i: layer: Assign backend pointer before calling DRM helpers")
b2ddf277ab5e ("drm/sun4i: layer: Add tiled modifier support and helper")
1c29d263f624 ("drm/sun4i: Rename sun4i_backend_layer_formats to sun4i_layer_formats")