RADEON_DFP2_ON 3547 drivers/gpu/drm/radeon/radeon_combios.c bios_5_scratch |= RADEON_DFP2_ON; RADEON_DFP2_ON 3552 drivers/gpu/drm/radeon/radeon_combios.c bios_5_scratch &= ~RADEON_DFP2_ON;