SNDRV_CTL_IOCTL_TLV_WRITE 981 include/uapi/sound/asound.h #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) SNDRV_CTL_IOCTL_TLV_WRITE 981 tools/include/uapi/sound/asound.h #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv)