ICHD_PCMOUT
if (ichdev->ichd == ICHD_PCMOUT) {
err = snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCMOUT]);
chip->ichd[ICHD_PCMOUT].substream = NULL;
chip->ichd[ICHD_PCMOUT].pcm = &pbus->pcms[0];
if (ichdev->ichd == ICHD_PCMOUT)
ichdev = &chip->ichd[ICHD_PCMOUT];
if (ichdev->ichd == ICHD_PCMOUT && chip->spdif_idx < 0)