ATOM_S2_CRT2_DPMS_STATE 4440 drivers/gpu/drm/radeon/radeon_atombios.c bios_2_scratch &= ~ATOM_S2_CRT2_DPMS_STATE; ATOM_S2_CRT2_DPMS_STATE 4442 drivers/gpu/drm/radeon/radeon_atombios.c bios_2_scratch |= ATOM_S2_CRT2_DPMS_STATE;