1 .\" $NetBSD: uaudio.4,v 1.15 2002/02/12 19:53:57 jdolecek Exp $
3 .\" Copyright (c) 1999 The NetBSD Foundation, Inc.
4 .\" All rights reserved.
6 .\" This code is derived from software contributed to The NetBSD Foundation
7 .\" by Lennart Augustsson.
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10 .\" modification, are permitted provided that the following conditions
12 .\" 1. Redistributions of source code must retain the above copyright
13 .\" notice, this list of conditions and the following disclaimer.
14 .\" 2. Redistributions in binary form must reproduce the above copyright
15 .\" notice, this list of conditions and the following disclaimer in the
16 .\" documentation and/or other materials provided with the distribution.
17 .\" 3. All advertising materials mentioning features or use of this software
18 .\" must display the following acknowledgement:
19 .\" This product includes software developed by the NetBSD
20 .\" Foundation, Inc. and its contributors.
21 .\" 4. Neither the name of The NetBSD Foundation nor the names of its
22 .\" contributors may be used to endorse or promote products derived
23 .\" from this software without specific prior written permission.
25 .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
26 .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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37 .\" $FreeBSD: src/share/man/man4/snd_uaudio.4,v 1.6 2005/12/15 20:25:41 joel Exp $
38 .\" $DragonFly: src/share/man/man4/snd_uaudio.4,v 1.1 2007/01/04 22:47:00 corecode Exp $
45 .Nd USB audio device driver
47 To compile this driver into the kernel, place the following lines in your
48 kernel configuration file:
49 .Bd -ragged -offset indent
52 .Cd "device snd_uaudio"
55 Alternatively, to load the driver as a module at boot time, place the
58 .Bd -literal -offset indent
64 driver provides support for
70 audio device consists of a number of components:
71 input terminals (e.g.\& USB digital input), output terminals (e.g.\&
72 speakers), and a number of units in between (e.g.\& volume control).
75 .Ql USB Audio Class Specification
81 .%T "USB Audio Class Specifications"
82 .%O http://www.usb.org/developers/devclass_docs/
87 driver first appeared in
90 This manual page was adopted from
95 .An Hiten Pandya Aq hmp@FreeBSD.org .
101 as of this writing, does not handle device un-registrations in a properly
102 abstracted manner, i.e., a detach request is refused by the
104 framework if the device is in use.
107 and supposedly other detach-able busses, it is necessary to allow the
108 device un-registration to complete successfully, otherwise the driver
109 leaves wild pointers to invalid data structures and thus leading to a panic.