misc/171254: Lack of support for usb 2.0 audio class devices

[Roberth Sjonøy]

>Number:         171254
>Category:       misc
>Synopsis:       Lack of support for usb 2.0 audio class devices
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Sun Sep 02 14:10:08 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Roberth Sjonøy
>Release:        9.1rc1
>Organization:
>Environment:
FreeBSD R2D2 9.1-RC1 FreeBSD 9.1-RC1 #0: Tue Aug 14 04:25:06 UTC 2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
FreeBSD lacks support for the USB Audio 2.0 standards. This is a widely used standard for usb soundcards. And are adopted more and more by manufacturers that produce usb soundcards aimed at audiophiles.

http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip

>How-To-Repeat:
Plug in an usb audio 2.0 card into the computer and demsg will show this:

uaudio_mixer_fill_info: found AC header, vers=200, len=18431
uaudio_mixer_fill_info: invalid audio version
uaudio_attach: audio rev 2.00
uaudio_attach: 0 mixer controls
uaudio0: No playback.
uaudio0: No recording.
uaudio0: No midi sequencer.
uaudio_attach: doing child a
>Fix:
Inmplement USB audio 2.0 class, into the existing snd_uaudio driver or create new one.

>Release-Note:
>Audit-Trail:
>Unformatted: