UPLL_REF_DIV 258 drivers/gpu/drm/radeon/r600.c UPLL_REF_DIV(ref_div), UPLL_REF_DIV 99 drivers/gpu/drm/radeon/rv770.c WREG32_P(CG_UPLL_FUNC_CNTL, UPLL_REF_DIV(1), ~UPLL_REF_DIV_MASK);