V_SRES
hc->hw.r_cirm |= V_SRES;
hc->hw.r_cirm &= ~V_SRES;
hc->hw.r_cirm = V_SRES | V_HFCRES | V_PCMRES | V_STRES;
hc->hw.r_cirm = V_SRES | V_HFCRES | V_PCMRES | V_STRES