1.\" $FreeBSD: head/share/man/man4/snd_uaudio.4 122435 2003-11-10 20:25:40Z hmp $
2.\" $NetBSD: uaudio.4,v 1.15 2002/02/12 19:53:57 jdolecek Exp $
3.\"
4.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
5.\" All rights reserved.
6.\"
7.\" This code is derived from software contributed to The NetBSD Foundation
8.\" by Lennart Augustsson.
9.\"
10.\" Redistribution and use in source and binary forms, with or without
11.\" modification, are permitted provided that the following conditions
12.\" are met:
13.\" 1. Redistributions of source code must retain the above copyright
14.\" notice, this list of conditions and the following disclaimer.
15.\" 2. Redistributions in binary form must reproduce the above copyright
16.\" notice, this list of conditions and the following disclaimer in the
17.\" documentation and/or other materials provided with the distribution.
18.\" 3. All advertising materials mentioning features or use of this software
19.\" must display the following acknowledgement:
20.\" This product includes software developed by the NetBSD
21.\" Foundation, Inc. and its contributors.
22.\" 4. Neither the name of The NetBSD Foundation nor the names of its
23.\" contributors may be used to endorse or promote products derived
24.\" from this software without specific prior written permission.
25.\"
26.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36.\" POSSIBILITY OF SUCH DAMAGE.
37.\"
38.Dd November 10, 2003
39.Dt UAUDIO 4
40.Os
41.Sh NAME
42.Nm uaudio
43.Nd USB audio device driver
44.Sh SYNOPSIS
45.Cd "device pcm"
46.Cd "device usb"
47.Sh DESCRIPTION
48The
49.Nm
50driver provides support for
51.Tn USB
52audio class devices.
53.Pp
54A
55.Tn USB
56audio device consists of a number of components:
57input terminals (e.g. USB digital input), output terminals (e.g.
58speakers), and a number of units in between (e.g. volume control).
59.Pp
60Refer to the
61.Ql USB Audio Class Specification
62for more information.
63.Sh SEE ALSO
64.Xr pcm 4 ,
65.Xr usb 4
66.Rs
67.%T "USB Audio Class Specifications"
68.%O http://www.usb.org/developers/devclass_docs/
69.Re
70.Sh HISTORY
71The
72.Nm
73driver first appeared in
74appeared in
75.Fx 4.7 .
76.Sh AUTHORS
77This manual page was adopted from
78.Nx 1.6
79and modified for
80.Fx
81by
82.An Hiten Pandya Aq hmp@FreeBSD.org .
83.Sh BUGS
84The
85.Tn PCM
86framework in
87.Fx ,
88as of this writing, does not handle device un-registrations in a properly
89abstracted manner, i.e. a detach request is refused by the
90.Tn PCM
91framework if the device is in use.
92For
93.Tn USB
94and supposedly other detach-able busses, it is necessary to allow the
95device un-registration to complete successfully, otherwise the driver
96leaves wild pointers to invalid data structures and thus leading to a panic.
2.\" $NetBSD: uaudio.4,v 1.15 2002/02/12 19:53:57 jdolecek Exp $
3.\"
4.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
5.\" All rights reserved.
6.\"
7.\" This code is derived from software contributed to The NetBSD Foundation
8.\" by Lennart Augustsson.
9.\"
10.\" Redistribution and use in source and binary forms, with or without
11.\" modification, are permitted provided that the following conditions
12.\" are met:
13.\" 1. Redistributions of source code must retain the above copyright
14.\" notice, this list of conditions and the following disclaimer.
15.\" 2. Redistributions in binary form must reproduce the above copyright
16.\" notice, this list of conditions and the following disclaimer in the
17.\" documentation and/or other materials provided with the distribution.
18.\" 3. All advertising materials mentioning features or use of this software
19.\" must display the following acknowledgement:
20.\" This product includes software developed by the NetBSD
21.\" Foundation, Inc. and its contributors.
22.\" 4. Neither the name of The NetBSD Foundation nor the names of its
23.\" contributors may be used to endorse or promote products derived
24.\" from this software without specific prior written permission.
25.\"
26.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36.\" POSSIBILITY OF SUCH DAMAGE.
37.\"
38.Dd November 10, 2003
39.Dt UAUDIO 4
40.Os
41.Sh NAME
42.Nm uaudio
43.Nd USB audio device driver
44.Sh SYNOPSIS
45.Cd "device pcm"
46.Cd "device usb"
47.Sh DESCRIPTION
48The
49.Nm
50driver provides support for
51.Tn USB
52audio class devices.
53.Pp
54A
55.Tn USB
56audio device consists of a number of components:
57input terminals (e.g. USB digital input), output terminals (e.g.
58speakers), and a number of units in between (e.g. volume control).
59.Pp
60Refer to the
61.Ql USB Audio Class Specification
62for more information.
63.Sh SEE ALSO
64.Xr pcm 4 ,
65.Xr usb 4
66.Rs
67.%T "USB Audio Class Specifications"
68.%O http://www.usb.org/developers/devclass_docs/
69.Re
70.Sh HISTORY
71The
72.Nm
73driver first appeared in
74appeared in
75.Fx 4.7 .
76.Sh AUTHORS
77This manual page was adopted from
78.Nx 1.6
79and modified for
80.Fx
81by
82.An Hiten Pandya Aq hmp@FreeBSD.org .
83.Sh BUGS
84The
85.Tn PCM
86framework in
87.Fx ,
88as of this writing, does not handle device un-registrations in a properly
89abstracted manner, i.e. a detach request is refused by the
90.Tn PCM
91framework if the device is in use.
92For
93.Tn USB
94and supposedly other detach-able busses, it is necessary to allow the
95device un-registration to complete successfully, otherwise the driver
96leaves wild pointers to invalid data structures and thus leading to a panic.