1What: /config/usb-gadget/gadget/functions/uac2.name 2Date: Sep 2014 3KernelVersion: 3.18 4Description: 5 The attributes: 6 7 ===================== ======================================= 8 c_chmask capture channel mask 9 c_srate capture sampling rate 10 c_ssize capture sample size (bytes) 11 c_sync capture synchronization type 12 (async/adaptive) 13 c_mute_present capture mute control enable 14 c_volume_present capture volume control enable 15 c_volume_min capture volume control min value 16 (in 1/256 dB) 17 c_volume_max capture volume control max value 18 (in 1/256 dB) 19 c_volume_res capture volume control resolution 20 (in 1/256 dB) 21 fb_max maximum extra bandwidth in async mode 22 p_chmask playback channel mask 23 p_srate playback sampling rate 24 p_ssize playback sample size (bytes) 25 p_mute_present playback mute control enable 26 p_volume_present playback volume control enable 27 p_volume_min playback volume control min value 28 (in 1/256 dB) 29 p_volume_max playback volume control max value 30 (in 1/256 dB) 31 p_volume_res playback volume control resolution 32 (in 1/256 dB) 33 req_number the number of pre-allocated requests 34 for both capture and playback 35 ===================== ======================================= 36