AC_PAR_PCM
unsigned int pcm = param_read(codec, nid, AC_PAR_PCM);
val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
snd_hdac_read_parm(codec, nid, AC_PAR_PCM));