SNDRV_PCM_IOCTL_DELAY  585 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_DELAY		_IOR('A', 0x21, snd_pcm_sframes_t)
SNDRV_PCM_IOCTL_DELAY  585 tools/include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_DELAY		_IOR('A', 0x21, snd_pcm_sframes_t)