PCM_FMT_SFT
pcm_con |= AUD_PCM_FMT_PCM_MODE_B << PCM_FMT_SFT;
pcm_con |= AUD_PCM_FMT_PCM_MODE_B << PCM_FMT_SFT;
pcm_con |= pcm_priv->fmt << PCM_FMT_SFT;
pcm_con |= AUD_PCM_FMT_PCM_MODE_B << PCM_FMT_SFT;