snd_pcm_channel_info 386 include/sound/asound.h struct snd_pcm_channel_info { snd_pcm_channel_info 467 include/sound/asound.h SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info), snd_pcm_channel_info 635 sound/core/pcm_native.c static int snd_pcm_channel_info(struct snd_pcm_substream *substream,