1.\" $NetBSD: uaudio.4,v 1.15 2002/02/12 19:53:57 jdolecek Exp $
2.\"
3.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
4.\" All rights reserved.
5.\"
6.\" This code is derived from software contributed to The NetBSD Foundation
7.\" by Lennart Augustsson.
8.\"
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22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28.\" POSSIBILITY OF SUCH DAMAGE.
29.\"
30.\" $FreeBSD: head/share/man/man4/snd_uaudio.4 219004 2011-02-24 18:08:23Z hselasky $
31.\"
32.Dd February 24, 2011
33.Dt SND_UAUDIO 4
34.Os
35.Sh NAME
36.Nm snd_uaudio
37.Nd USB audio and MIDI device driver
38.Sh SYNOPSIS
39To compile this driver into the kernel, place the following lines in your
40kernel configuration file:
41.Bd -ragged -offset indent
42.Cd "device sound"
43.Cd "device usb"
44.Cd "device snd_uaudio"
45.Ed
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50.Bd -literal -offset indent
51snd_uaudio_load="YES"
52.Ed
53.Sh DESCRIPTION
54The
55.Nm
56driver provides support for
57.Tn USB
58audio class devices and
59.Tn USB
60MIDI class devices.
61.Pp
62A
63.Tn USB
64audio device consists of a number of components:
65input terminals (e.g.\& USB digital input), output terminals (e.g.\&
66speakers), and a number of units in between (e.g.\& volume control).
67.Pp
68Refer to the
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91The
92.Tn PCM
93framework in
94.Fx ,
95as of this writing, does not handle device un-registrations in a properly
96abstracted manner, i.e., a detach request is refused by the
97.Tn PCM
98framework if the device is in use.
99It is necessary to allow the device un-registration to complete
100successfully, otherwise the
101.Tn PCM
102layer will panic.
2.\"
3.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
4.\" All rights reserved.
5.\"
6.\" This code is derived from software contributed to The NetBSD Foundation
7.\" by Lennart Augustsson.
8.\"
--- 13 unchanged lines hidden (view full) ---
22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28.\" POSSIBILITY OF SUCH DAMAGE.
29.\"
30.\" $FreeBSD: head/share/man/man4/snd_uaudio.4 219004 2011-02-24 18:08:23Z hselasky $
31.\"
32.Dd February 24, 2011
33.Dt SND_UAUDIO 4
34.Os
35.Sh NAME
36.Nm snd_uaudio
37.Nd USB audio and MIDI device driver
38.Sh SYNOPSIS
39To compile this driver into the kernel, place the following lines in your
40kernel configuration file:
41.Bd -ragged -offset indent
42.Cd "device sound"
43.Cd "device usb"
44.Cd "device snd_uaudio"
45.Ed
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50.Bd -literal -offset indent
51snd_uaudio_load="YES"
52.Ed
53.Sh DESCRIPTION
54The
55.Nm
56driver provides support for
57.Tn USB
58audio class devices and
59.Tn USB
60MIDI class devices.
61.Pp
62A
63.Tn USB
64audio device consists of a number of components:
65input terminals (e.g.\& USB digital input), output terminals (e.g.\&
66speakers), and a number of units in between (e.g.\& volume control).
67.Pp
68Refer to the
--- 22 unchanged lines hidden (view full) ---
91The
92.Tn PCM
93framework in
94.Fx ,
95as of this writing, does not handle device un-registrations in a properly
96abstracted manner, i.e., a detach request is refused by the
97.Tn PCM
98framework if the device is in use.
99It is necessary to allow the device un-registration to complete
100successfully, otherwise the
101.Tn PCM
102layer will panic.