ATOM_BIOS_EXTENDED_FUNCTION_CODE 8231 drivers/gpu/drm/amd/include/atombios.h #define ATOM_BIOS_EXTENDED_FUNCTION_CODE        0xA0           // ATI Extended Function code
ATOM_BIOS_EXTENDED_FUNCTION_CODE 6961 drivers/gpu/drm/radeon/atombios.h #define ATOM_BIOS_EXTENDED_FUNCTION_CODE        0xA0	        // ATI Extended Function code