db_debug4        1188 drivers/gpu/drm/radeon/rv770.c 	u32 db_debug4, tmp;
db_debug4        1443 drivers/gpu/drm/radeon/rv770.c 		db_debug4 = RREG32(DB_DEBUG4);
db_debug4        1444 drivers/gpu/drm/radeon/rv770.c 		db_debug4 |= DISABLE_TILE_COVERED_FOR_PS_ITER;
db_debug4        1445 drivers/gpu/drm/radeon/rv770.c 		WREG32(DB_DEBUG4, db_debug4);