ICH_GLOB_CTL_COLD
control |= (control & ICH_GLOB_CTL_COLD) ?
ICH_GLOB_CTL_WARM : ICH_GLOB_CTL_COLD;
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD, 4);
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD | ICH_GLOB_CTL_PRES, 4);
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD, 4);