pcm_vol
struct pcm_vol pcm_vol[NR_PCM];
struct pcm_vol *p;
p = &vortex->pcm_vol[subdev];
chip->pcm_vol[substream->number].active = 1;
chip->pcm_vol[substream->number].kctl, 1);
chip->pcm_vol[substream->number].active = 0;
chip->pcm_vol[substream->number].kctl,
struct pcm_vol *p = &vortex->pcm_vol[subdev];
struct pcm_vol *p = &vortex->pcm_vol[subdev];
chip->pcm_vol[i].active = 0;
chip->pcm_vol[i].dma = -1;
chip->pcm_vol[i].kctl = kctl;