R_PCM_MD0
HFC_outb(hc, R_PCM_MD0, hc->hw.r_pcm_md0 | 0x90);
HFC_outb(hc, R_PCM_MD0, hc->hw.r_pcm_md0 | 0xa0);
HFC_outb(hc, R_PCM_MD0, hc->hw.r_pcm_md0 | 0x00);
HFC_outb(hc, R_PCM_MD0, hc->hw.r_pcm_md0 | 0x00);