bw_def_underlay420_luma 168 drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c surface_type[0] = bw_def_underlay420_luma; bw_def_underlay420_luma 169 drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c surface_type[2] = bw_def_underlay420_luma; bw_def_underlay420_luma 885 drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c case bw_def_underlay420_luma: