SNDRV_CHMAP_BRC 568 include/uapi/sound/asound.h SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC, SNDRV_CHMAP_BRC 568 tools/include/uapi/sound/asound.h SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,