1.\" Copyright (c) 2006 Joel Dahl <joel@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd October 8, 2006 28.Dt SND_HDA 4 29.Os 30.Sh NAME 31.Nm snd_hda 32.Nd "Intel High Definition Audio bridge device driver" 33.Sh SYNOPSIS 34To compile this driver into the kernel, place the following lines in your 35kernel configuration file: 36.Bd -ragged -offset indent 37.Cd "device sound" 38.Cd "device snd_hda" 39.Ed 40.Pp 41Alternatively, to load the driver as a module at boot time, place the 42following line in 43.Xr loader.conf 5 : 44.Bd -literal -offset indent 45snd_hda_load="YES" 46.Ed 47.Sh DESCRIPTION 48The 49.Nm 50bridge device driver allows the generic audio driver, 51.Xr sound 4 , 52to attach to Intel High Definition Audio devices. 53The 54.Nm 55driver supports hardware that conforms with revision 1.0 of the Intel High 56Definition Audio specification and tries to behave much like the Microsoft 57Universal Audio Architecture (UAA) draft (revision 0.7b) for handling audio 58devices. 59HDA acts like a primary bus, similar to 60.Xr miibus 4 , 61for handling various child buses such as audio, modem and HDMI (High Definition 62Multimedia Interface). 63Only audio is implemented in the 64.Nm 65driver. 66.Pp 67The High Definition (HD) Audio specification was developed by Intel as the 68logical successor of the old AC'97 specification and has several advantages, 69such as higher bandwidth which allows more channels and more detailed formats, 70support for several logical audio devices, and general purpose DMA channels. 71.Pp 72The HDA specification defines the register-level interface, physical link 73characteristics, codec programming models, and codec architectural components. 74This specification is intended for both device driver developers and hardware 75component designers. 76.Sh HARDWARE 77The 78.Nm 79driver supports the following audio chipsets: 80.Pp 81.Bl -bullet -compact 82.It 83ATI SB450 84.It 85ATI SB600 86.It 87Intel 631x/632xESB 88.It 89Intel 82801F 90.It 91Intel 82801G 92.It 93Intel 82801H 94.It 95nVidia MCP51 96.It 97nVidia MCP55 98.It 99nVidia MCP61A 100.It 101nVidia MCP61B 102.It 103nVidia MCP65A 104.It 105nVidia MCP65B 106.It 107SiS 966 108.It 109VIA VT8251/8237A 110.El 111.Pp 112Generic Audio chipsets compatible with the Intel HDA specification should work, 113but have not been verified yet. 114The following codecs have been verified to work: 115.Pp 116.Bl -bullet -compact 117.It 118Analog Device AD1981HD 119.It 120Analog Device AD1983 121.It 122Analog Device AD1986A 123.It 124CMedia CMI9880 125.It 126Conexant Venice 127.It 128Conexant Waikiki 129.It 130Realtek ALC260 131.It 132Realtek ALC861 133.It 134Realtek ALC880 135.It 136Realtek ALC882 137.It 138Realtek ALC883 139.It 140Sigmatel STAC9220 141.It 142Sigmatel STAC9220D/9223D 143.It 144Sigmatel STAC9221 145.It 146Sigmatel STAC9221D 147.El 148.Sh SEE ALSO 149.Xr sound 4 , 150.Xr loader.conf 5 151.Sh HISTORY 152The 153.Nm 154device driver first appeared in 155.Fx 7.0 . 156.Sh AUTHORS 157.An -nosplit 158The 159.Nm 160driver was written by 161.An Stephane E. Potvin Aq sepotvin@videotron.ca 162and 163.An Ariff Abdullah Aq ariff@FreeBSD.org . 164This manual page was written by 165.An Joel Dahl Aq joel@FreeBSD.org . 166.Sh BUGS 167There are a couple of missing features, such as support for Digital 168S/PDIF and multichannel output. 169.Pp 170A few Hardware/OEM vendors tend to screw up BIOS settings, thus 171rendering the 172.Nm 173driver useless, which usually results in a state where the 174.Nm 175driver seems to attach and work, but without any sound. 176