413 lines
10 KiB
Groff
413 lines
10 KiB
Groff
.\" Copyright (c) 2006-2008 Joel Dahl <joel@FreeBSD.org>
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.\" Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd Sep 14, 2008
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.Dt SND_HDA 4
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.Os
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.Sh NAME
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.Nm snd_hda
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.Nd "Intel High Definition Audio bridge device driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel, place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device sound"
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.Cd "device snd_hda"
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.Ed
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.Pp
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Alternatively, to load the driver as a module at boot time, place the
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following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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snd_hda_load="YES"
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.Ed
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.Sh DESCRIPTION
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The High Definition (HD) Audio specification was developed by Intel as the
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logical successor of the old AC'97 specification and has several advantages,
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such as higher bandwidth which allows more channels and more detailed formats,
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support for several logical audio devices, and general purpose DMA channels.
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.Pp
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The
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.Nm
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driver is a HDA bus controller driver and HDA codecs audio functions bridge
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driver that allows the generic audio driver,
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.Xr sound 4 ,
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to be used with this hardware.
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.Nm
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only supports audio functions.
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Modem, HDMI and other possible functions are not implemented.
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.Pp
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The
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.Nm
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driver supports hardware that conforms with revision 1.0 of the Intel High
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Definition Audio specification and tries to behave much like the Microsoft
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Universal Audio Architecture (UAA) draft (revision 0.7b) for handling audio
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devices.
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.Pp
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According to HDA and UAA specifications, depending on number of HDA buses
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and codecs present in system, their audio capabilities and BIOS provided
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configuration, the
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.Nm
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driver often provides several PCM audio devices.
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For example, one device for main rear 7.1 output and inputs, one device
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for independent headset connectors at front and one device for SPDIF or
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HDMI audio input/output.
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Usually that assignment may be widely tuned by using device hints.
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A lot of useful information about driver operation and present audio setup may
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be obtained from the driver verbose boot messages.
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.Ss Boot-time Configuration
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The following variables are available at boot-time through the
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.Xr device.hints 5
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file:
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.Bl -tag -width ".Va hint.hdac.%d.config"-offset indent
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.It Va hint.hdac.%d.config
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Configures a range of possible options.
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Possible values are:
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.Dq Li dmapos ,
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.Dq Li eapdinv ,
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.Dq Li gpio0 ,
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.Dq Li gpio1 ,
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.Dq Li gpio2 ,
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.Dq Li gpio3 ,
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.Dq Li gpio4 ,
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.Dq Li gpio5 ,
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.Dq Li gpio6 ,
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.Dq Li gpio7 ,
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.Dq Li gpioflush ,
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.Dq Li ivref ,
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.Dq Li ivref50 ,
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.Dq Li ivref80 ,
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.Dq Li ivref100 ,
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.Dq Li fixedrate ,
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.Dq Li forcestereo ,
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.Dq Li ovref ,
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.Dq Li ovref50 ,
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.Dq Li ovref80 ,
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.Dq Li ovref100 ,
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.Dq Li senseinv ,
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.Dq Li softpcmvol ,
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and
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.Dq Li vref .
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An option prefixed with
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.Dq Li no ,
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such as
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.Dq Li nofixedrate ,
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will do the opposite and takes precedence.
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Options can be separated by whitespace and commas.
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GPIO is a codecs General Purpose I/O pins which system integrators sometimes
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use to control external muters, amplifiers and so on.
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If you have no sound or sound volume is not adequate you may need to find a
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GPIO combination required for your system.
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ivrefX/ovrefX options controls voltage used to power external microphones
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and so on.
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.It Va hint.hdac.%d.cad%d.nid%d.config
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Overrides codec pin configuration set by BIOS.
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May be specified as a 32bit HEX value with a leading "0x" or as a set of
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space separated "option=value" pairs.
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.El
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.Pp
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Pin configuration is the UAA driver's main source of information about codec
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usage.
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This information is usually provided by the codec manufacturer and tuned
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by system integrators for specific system requirements.
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The
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.Nm
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driver allows users to override it to fix integrator mistakes or to use codec
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in alternative ways, for example, to get stereo output and 2 inputs
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instead of a single 5.1 output.
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Configuration includes the following options:
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.Bl -tag -width ".Va device=" -offset indent
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.It Va as
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Association number.
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Associations are used to group individual pins to form a complex multipin
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device.
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For example, to group 4 connectors for 7.1 output or to treat several
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input connectors as sources for the same input device.
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Can be specified as number from 0 to 15.
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Association number 0 means disabled pin, number 15 is a set of independent
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unassociated pins.
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Each association includes only pins of the same direction (in/out) and
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detected atomically - all pins or none.
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For every pair of input+output associations in order of their numeration
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separate PCM audio device is created.
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.It Va seq
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Sequence number.
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This unique inside every association number used to order pins inside
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association.
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Can be specified as a number from 0 to 15.
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Sequence number 15 for output associations has also special meaning.
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Output pin with sequence number 15 and device type Headhones will duplicate
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(with automatic mute if jack detection is supported) the first pin in that
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association.
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.It Va device
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Device type.
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Can be specified as a number from 0 to 15 or as a name:
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.Dq Li Line-out ,
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.Dq Li Speaker ,
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.Dq Li Headphones,
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.Dq Li CD ,
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.Dq Li SPDIF-out ,
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.Dq Li Digital-out ,
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.Dq Li Modem-line ,
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.Dq Li Modem-handset ,
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.Dq Li Line-in ,
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.Dq Li AUX ,
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.Dq Li Mic ,
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.Dq Li Telephony ,
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.Dq Li SPDIF-in ,
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.Dq Li Digital-in ,
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.Dq Li Res.E ,
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or
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.Dq Li Other .
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The device type also describes the pin direction (in/out).
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For example,
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.Dq Li CD
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always means input pin, while
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.Dq Li Headphones
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always means output.
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.It Va conn
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Connection type.
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Can be specified as a number from 0 to 3 or as a name:
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.Dq Li Jack ,
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.Dq Li None ,
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.Dq Li Fixed ,
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or
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.Dq Li Both .
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Pins with
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.Dq Li None
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connection type are disabled.
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.It Va ctype
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Connector physical type.
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Can be specified as a number from 0 to 15.
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This is a reference only value which is ignored by the driver.
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.It Va color
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Connector color.
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Can be specified as a number from 0 to 15 or as a name:
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.Dq Li Unknown ,
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.Dq Li Black ,
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.Dq Li Grey ,
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.Dq Li Blue ,
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.Dq Li Green ,
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.Dq Li Red ,
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.Dq Li Orange ,
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.Dq Li Yellow ,
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.Dq Li Purple ,
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.Dq Li Pink ,
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.Dq Li Res.A ,
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.Dq Li Res.B ,
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.Dq Li Res.C ,
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.Dq Li Res.D ,
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.Dq Li White ,
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or
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.Dq Li Other .
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This is a reference only value which is ignored by the driver.
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.It Va loc
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Connector physical location.
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Can be specified as a number from 0 to 63.
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This is a reference only value which is ignored by the driver.
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.It Va misc
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Misc bits.
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Can be specified as a number from 0 to 15.
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Bit 0, if set, tells that jack detection on this pin supported by the codec
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is not implemented in hardware.
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.El
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.Ss Runtime Configuration
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The following
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.Xr sysctl 8
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variables are available in addition to those available to all
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.Xr sound 4
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devices:
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.Bl -tag -width ".Va dev.hdac.%d.polling" -offset indent
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.It Va dev.hdac.%d.polling
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Enables polling mode, where the driver operates by querying the device
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state on timer ticks using
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.Xr callout 9
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instead of interrupts.
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Polling is disabled by default.
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Do not enable it unless you are facing weird interrupt problems or if the
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device cannot generate interrupts at all.
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.It Va dev.hdac.%d.polling_interval
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Controller/Jack Sense polling interval (1-1000 ms)
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.It Va dev.hdac.%d.pindump
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Setting this to a non-zero value dumps the current pin configuration, main
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capabilities and jack sense status to console and syslog.
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.El
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.Sh HARDWARE
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The
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.Nm
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driver supports the following audio chipsets:
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.Pp
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.Bl -bullet -compact
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.It
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ATI SB450
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.It
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ATI SB600
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.It
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Intel 631x/632xESB
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.It
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Intel 82801F
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.It
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Intel 82801G
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.It
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Intel 82801H
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.It
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Intel 82801I
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.It
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nVidia MCP51
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.It
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nVidia MCP55
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.It
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nVidia MCP61A
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.It
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nVidia MCP61B
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.It
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nVidia MCP65A
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.It
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nVidia MCP65B
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.It
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nVidia MCP67A
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.It
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nVidia MCP67B
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.It
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SiS 966
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.It
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VIA VT8251/8237A
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.El
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.Pp
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Generic audio chipsets compatible with the Intel HDA specification should work,
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but have not been verified yet.
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The following codecs have been verified to work:
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.Pp
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.Bl -bullet -compact
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.It
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Analog Devices AD1981HD
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.It
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Analog Devices AD1983
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.It
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Analog Devices AD1984
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.It
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Analog Devices AD1986A
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.It
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Analog Devices AD1988
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.It
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Analog Devices AD1988B
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.It
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CMedia CMI9880
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.It
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Conexant Venice
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.It
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Conexant Waikiki
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.It
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Realtek ALC260
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.It
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Realtek ALC262
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.It
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Realtek ALC268
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.It
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Realtek ALC660
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.It
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Realtek ALC861
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.It
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Realtek ALC861VD
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.It
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Realtek ALC880
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.It
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Realtek ALC882
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.It
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Realtek ALC883
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.It
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Realtek ALC885
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.It
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Realtek ALC888
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.It
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Realtek ALC889
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.It
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Sigmatel STAC9205
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.It
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Sigmatel STAC9220
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.It
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Sigmatel STAC9220D / 9223D
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.It
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Sigmatel STAC9221
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.It
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Sigmatel STAC9221D
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.It
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Sigmatel STAC9227D
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.It
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Sigmatel STAC9227X
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.It
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Sigmatel STAC9228D
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.It
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Sigmatel STAC9228X
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.It
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Sigmatel STAC9229D
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.It
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Sigmatel STAC9229X
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.It
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Sigmatel STAC9230D
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.It
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Sigmatel STAC9230X
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.It
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Sigmatel STAC9271D
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.It
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Sigmatel STAC9872AK
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.It
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VIA VT1708
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.It
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VIA VT1709
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.El
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.Sh SEE ALSO
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.Xr sound 4 ,
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.Xr device.hints 5 ,
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.Xr loader.conf 5 ,
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.Xr sysctl 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 6.3 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Stephane E. Potvin Aq sepotvin@videotron.ca ,
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.An Ariff Abdullah Aq ariff@FreeBSD.org
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and
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.An Alexander Motin Aq mav@FreeBSD.org .
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This manual page was written by
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.An Joel Dahl Aq joel@FreeBSD.org
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and
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.An Alexander Motin Aq mav@FreeBSD.org .
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.Sh BUGS
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A few Hardware/OEM vendors tend to screw up BIOS settings, thus
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rendering the
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.Nm
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driver useless, which usually results in a state where the
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.Nm
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driver seems to attach and work, but without any sound.
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