EVERGREEN_GRPH_FLIP_CONTROL 1394 drivers/gpu/drm/radeon/atombios_crtc.c 	WREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset, 0);
EVERGREEN_GRPH_FLIP_CONTROL 1424 drivers/gpu/drm/radeon/evergreen.c 	WREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset,