DxGRPH_PFLIP_INT_CLEAR 3941 drivers/gpu/drm/radeon/r600.c 		WREG32(D1GRPH_INTERRUPT_STATUS, DxGRPH_PFLIP_INT_CLEAR);
DxGRPH_PFLIP_INT_CLEAR 3943 drivers/gpu/drm/radeon/r600.c 		WREG32(D2GRPH_INTERRUPT_STATUS, DxGRPH_PFLIP_INT_CLEAR);