• Bryan Wu's avatar
    USB: gadget: add USB Audio Gadget driver · c6994e6f
    Bryan Wu authored
    Funtions added:
     - setup all the USB audio class device descriptors
     - handle class specific setup request
     - receive data from USB host by ISO transfer
     - play audio data by ALSA sound card
     - open and setup playback PCM interface
     - set default playback PCM parameters
     - provide playback functions for USB audio driver
     - provide PCM parameters set/get functions
    
    Test on:
     - Host: Ubuntu 8.10, kernel 2.6.27
     - Gadget: EZKIT-BF548 with ASoC AD1980 codec
    
    Todo:
     - add real Mute control code
     - add real Volume control code
     - maybe find another way to replace dynamic buffer handling
       with static buffer allocation
     - test on Windows system
     - provide control interface to handle mute/volume control
     - provide capture interface in the future
     - test on BF527, other USB device controler and other audio codec
    Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
    Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    c6994e6f
Makefile 1.53 KB