SNDRV_PCM_IOCTL_PAUSE 595 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) SNDRV_PCM_IOCTL_PAUSE 595 tools/include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int)