Date: Sun, 21 Jul 2002 10:28:50 -0700 (PDT) From: Nick Sayer <nsayer@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/conf files src/sys/modules/sound/driver Makefile src/sys/modules/sound/driver/uaudio Makefile src/sys/dev/sound/usb uaudio.c uaudio.h uaudio_pcm.c uaudioreg.h Message-ID: <200207211728.g6LHSo9V014016@freefall.freebsd.org>
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nsayer 2002/07/21 10:28:50 PDT
Modified files:
sys/conf files
sys/modules/sound/driver Makefile
Added files:
sys/modules/sound/driver/uaudio Makefile
sys/dev/sound/usb uaudio.c uaudio.h uaudio_pcm.c
uaudioreg.h
Log:
Add uaudio -- a USB audio device driver.
This driver actually works slightly better on -stable than on -current
(the system locks on detach on -current), so it should be MFC'd somewhat
sooner.
This driver currently points out a difficulty in the sound device framework.
The PCM unregister routine is allowed to refuse the detach if the device is
in use. In the case of a USB device, however, this unregistration is much more
mandatory in nature, since the device is *actually* gone when this call is
made. The sound subsystem really should not refuse an unregistration and
should take its own steps to reject further I/O. As a result, if you detach
a USB sound device while it is in use, you can expect a panic shortly
thereafter.
This device cannot currently record audio. Some routines are unwritten as
of yet in uaudio.c to support recording.
This device hangs my -current box on detach. I don't know why. This does
not happen on my -stable machine.
Obtained from: Hiroyuki Aizu
MFC after: 2 weeks
Revision Changes Path
1.668 +2 -0 src/sys/conf/files
1.1 +2912 -0 src/sys/dev/sound/usb/uaudio.c (new)
1.1 +49 -0 src/sys/dev/sound/usb/uaudio.h (new)
1.1 +375 -0 src/sys/dev/sound/usb/uaudio_pcm.c (new)
1.1 +384 -0 src/sys/dev/sound/usb/uaudioreg.h (new)
1.14 +1 -1 src/sys/modules/sound/driver/Makefile
1.1 +9 -0 src/sys/modules/sound/driver/uaudio/Makefile (new)
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