HDP_DEBUG1       1090 drivers/gpu/drm/radeon/r600.c 		WREG32(HDP_DEBUG1, 0);
HDP_DEBUG1       4395 drivers/gpu/drm/radeon/r600.c 		WREG32(HDP_DEBUG1, 0);
HDP_DEBUG1       1025 drivers/gpu/drm/radeon/rv770.c 	tmp = RREG32(HDP_DEBUG1);