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6 .TH USB_AC 7D "May 13, 2009"
8 usb_ac \- USB audio control driver
12 sound-control@unit-address
18 The \fBusb_ac\fR driver is a USBA (Solaris USB Architecture) compliant client
19 driver that supports the \fIUSB Audio Class 1.0\fR specification.
22 The audio control driver is a USB class driver and offers functionality similar
23 to the \fBaudiocs\fR (sun4u) and \fBaudiots\fR (Sun Blade 100) drivers which
24 use the Solaris audio mixer framework (\fBmixer\fR(7I)). Unlike the
25 \fBaudiocs\fR and \fBaudiots\fR drivers, the USB audio device can have
26 play-only or record-only capability.
29 Drivers corresponding to other USB audio interfaces on the device, including
30 the \fBusb_as\fR(7D) audio streaming driver or the \fBhid\fR(7D) driver, are
31 plumbed under the USB audio control driver and do not directly interface with
35 The \fBusb_ac\fR driver supports USB audio class compliant devices with a
40 If a device is hot-removed while it is active, all subsequent opens returns
41 EIO. All other errors are defined in the \fBaudio\fR(7I) man page.
46 \fB\fB/kernel/drv/usb_ac\fR\fR
49 32-bit x86 ELF kernel module
55 \fB\fB/kernel/drv/amd64/usb_ac\fR\fR
58 64-bit x86 ELF kernel module
64 \fB\fB/kernel/drv/sparcv9/usb_ac\fR\fR
67 64-bit SPARC ELF kernel module.
73 \fB\fB/kernel/drv/usb_ac.conf\fR\fR
76 USB audio driver configuration file.
82 See \fBattributes\fR(5) for descriptions of the following attributes:
90 ATTRIBUTE TYPE ATTRIBUTE VALUE
92 Architecture SPARC, x86, PCI-based systems
94 Interface Stability Uncommitted
100 \fBcfgadm_usb\fR(8), \fBioctl\fR(2), \fBattributes\fR(5), \fBhid\fR(7D),
101 \fBusba\fR(7D), \fBusb_as\fR(7D), \fBaudio\fR(7I), \fBmixer\fR(7I),
102 \fBstreamio\fR(7I), \fBusb_ah\fR(7M)
105 \fIWriting Device Drivers\fR
108 \fIUniversal Serial Bus Specification 1.0 and 1.1\fR
111 \fIUniversal Serial Bus Device Class Definition for Audio Devices, Release
115 \fISystem Administration: Basic Administration\fR
119 In addition to being logged, the following messages can appear on the system
120 console. All messages are formatted in the following manner:
124 Warning: <device path> (usb_ac<instance num>): Error Message...
132 \fBFailure to plumb audio streams drivers.\fR
136 The \fBusb\fR audio streaming driver or the \fBhid\fR driver could not be
137 plumbed under the audio control driver and the device is not usable.