ATOM_BIOS_FUNCTION_OLD_DEVICE_DET 8244 drivers/gpu/drm/amd/include/atombios.h #define ATOM_BIOS_FUNCTION_OLD_DEVICE_DET       0x83
ATOM_BIOS_FUNCTION_OLD_DEVICE_DET 6974 drivers/gpu/drm/radeon/atombios.h #define ATOM_BIOS_FUNCTION_OLD_DEVICE_DET       0x83