What: /config/usb-gadget/gadget/functions/uac2.name Date: Sep 2014 KernelVersion: 3.18 Description: The attributes: ===================== ======================================= c_chmask capture channel mask c_srate list of capture sampling rates (comma-separated) c_ssize capture sample size (bytes) c_hs_bint capture bInterval for HS/SS (1-4: fixed, 0: auto) c_sync capture synchronization type (async/adaptive) c_mute_present capture mute control enable c_volume_present capture volume control enable c_volume_min capture volume control min value (in 1/256 dB) c_volume_max capture volume control max value (in 1/256 dB) c_volume_res capture volume control resolution (in 1/256 dB) fb_max maximum extra bandwidth in async mode p_chmask playback channel mask p_srate list of playback sampling rates (comma-separated) p_ssize playback sample size (bytes) p_hs_bint playback bInterval for HS/SS (1-4: fixed, 0: auto) p_mute_present playback mute control enable p_volume_present playback volume control enable p_volume_min playback volume control min value (in 1/256 dB) p_volume_max playback volume control max value (in 1/256 dB) p_volume_res playback volume control resolution (in 1/256 dB) req_number the number of pre-allocated requests for both capture and playback function_name name of the interface ===================== =======================================