fceeeec75f
with various laptops using hdaa(4) sound devices. We don't seem to know the "correct" configurations for these devices and the defaults are far superiour, e.g. they work if you don't nuke the default configs. PR: 200526 Differential Revision: https://reviews.freebsd.org/D17772
643 lines
20 KiB
Groff
643 lines
20 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 July 16, 2019
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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 includes HDA bus controller driver (hdac), HDA codec driver (hdacc)
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and HDA codecs audio functions bridge driver (hdaa) that allows
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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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Only audio functions are supported by
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.Nm .
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Modem 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 the 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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The assignment of audio inputs and outputs may be tuned with
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.Xr device.hints 5
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or
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.Xr sysctl 8 .
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The driver's verbose boot messages provide a lot of information about
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the operation of the driver and present audio setup.
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.Pp
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The default audio device may be tuned by setting the
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.Ar hw.snd.default_unit
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sysctl, as described in
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.Xr sound 4 ,
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or explicitly specified in application settings.
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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 controller options.
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Possible values are:
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.Dq Li 64bit ,
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.Dq Li dmapos ,
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.Dq Li msi .
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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 nomsi ,
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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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.It Va hint.hdac.%d.msi
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Controls MSI (Message Signaled Interrupts) support.
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.It Va hint.hdac.%d.cad%d.nid%d.config
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Same as
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.Va hint.hdaa.%d.nid%d.config
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.It Va hint.hdaa.%d.config
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Configures a range of possible audio function options.
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Possible values are:
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.Dq Li eapdinv ,
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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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.Pp
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The
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.Dq Li eapdinv
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option inverts External Amplifier Power Down signal.
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The
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.Dq Li fixedrate
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denies all sampling rates except 48KHz.
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The
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.Dq Li forcestereo
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denies mono playback/recording.
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The
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.Dq Li senseinv
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option inverts jack sensing logic.
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The
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.Dq Li ivref Ns Ar X
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and
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.Dq Li ovref Ns Ar X
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options control the voltage used to power external microphones.
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.It Va dev.hdaa.%d.init_clear
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Zero out the pin widget config setup by the system.
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Some systems seem to have unuseable audio devices if the pin widgit
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configuration is cleared.
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Set this value to 0 to accept the default configuration values setup by the
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BIOS.
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.It Va hint.hdaa.%d.gpio_config
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Overrides audio function GPIO pins configuration set by BIOS.
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May be specified as a set of space-separated
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.Dq Ar num Ns = Ns Ar value
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pairs, where
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.Ar num
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is GPIO line number, and
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.Ar value
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is one of:
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.Dq Li keep ,
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.Dq Li set ,
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.Dq Li clear ,
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.Dq Li disable
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and
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.Dq Li input .
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.Pp
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.Dq Li GPIO Ns s
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are a codec's 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 have to
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experiment a bit with the GPIO setup to find the optimal setup for your
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system.
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.It Va hint.hdaa.%d.nid%d.config
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Overrides audio function pin configuration set by BIOS.
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May be specified as a 32-bit hexadecimal value with a leading
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.Dq 0x ,
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or as a set of space-separated
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.Dq Ar option Ns = Ns Ar value
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pairs.
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.It Va hint.pcm.%d.rec.autosrc
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Controls automatic recording source feature:
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.Bl -tag -width 2n -compact
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.It 0
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disabled,
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.It 1
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once on attach,
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.It 2
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enabled.
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.El
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When enabled, driver will automatically set recording source of the mixer to
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connected input using jack presence detection statuses.
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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 the
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available codec in alternative ways (for example to get stereo output and 2
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inputs instead of a single 5.1 output).
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.Pp
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The following options are supported:
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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 multi-pin
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device.
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For example, to group 4 connectors for 7.1 input/output, or to treat several
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input connectors as sources for the same input device.
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Association numbers can be specified as numeric values from 0 to 15.
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A value of 0 means disabled pin.
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A value of 15 is a set of independent unassociated pins.
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Each association includes only pins of the same direction (in/out) and is
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detected atomically (all pins or none).
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A separate PCM audio device is created for every pair of input and
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output associations.
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.It Va seq
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Sequence number.
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A unique, per-association number used to order pins inside the
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particular association.
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Sequence numbers can be specified as numeric values from 0 to 15.
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.Pp
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The sequence number 15 has a special meaning for output associations.
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Output pins with this number and device type
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.Dq Ar Headphones
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will duplicate (with automatic mute if jack detection is supported) the
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first pin in that association.
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.Pp
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The sequence numbers 14 and 15 has a special meaning for input associations.
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Their presence in association defines it as multiplexed or mixed respectively.
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If none of them are present and there are more than one pin in association,
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the association will provide multichannel input.
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.Pp
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For multichannel input/output associations sequence numbers encode
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channel pairs positions:
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0 - Front, 1 - Center/LFE, 2 - Back, 3 - Front Wide Center, 4 - Side.
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Standard combinations are: (0) - Stereo; (0, 2), (0, 4) - Quadro;
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(0, 1, 2), (0, 1, 4) - 5.1; (0, 1, 2, 4) - 7.1.
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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 an input pin, while
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.Dq Li Headphones
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always means an 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.
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The connection type can also be specified as one of the special names
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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 a connection type of
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.Dq Li None
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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.
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It is ignored by the
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.Nm
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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 one of the names
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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.
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It is ignored by the
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.Nm
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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.
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It is ignored by the
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.Nm
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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 has a special meaning.
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When set it means that jack detection 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.hdaa.%d.nid%d_original" -offset indent
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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 of all audio functions on the controller
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to console and syslog.
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.It Va dev.hdac.%d.polling
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Enables polling mode.
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In this mode the driver operates by querying the device state on timer
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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.hdaa.%d.config
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Run-time equivalent of the
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.Va hint.hdaa.%d.config
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tunable.
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.It Va dev.hdaa.%d.gpi_state
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Current state of GPI lines.
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.It Va dev.hdaa.%d.gpio_state
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Current state of GPIO lines.
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.It Va dev.hdaa.%d.gpio_config
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Run-time equivalent of the
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.Va hint.hdaa.%d.gpio.config
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tunable.
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.It Va dev.hdaa.%d.gpo_state
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Current state of GPO lines.
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.It Va dev.hdaa.%d.nid%d_config
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Run-time equivalent of the
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.Va hint.hdaa.%d.nid%d.config
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tunable.
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.It Va dev.hdaa.%d.nid%d_original
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Original pin configuration written by BIOS.
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.It Va dev.hdaa.%d.reconfig
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Setting this to a non-zero value makes driver to destroy existing pcm devices
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and process new pins configuration set via
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.Va dev.hdaa.%d.nid%d_config .
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.It Va dev.pcm.%d.play.32bit , dev.pcm.%d.rec.32bit
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HDA controller uses 32bit representation for all samples of more then 16 bits.
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These variables allow to specify how many bits of these 32 should be
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used by CODEC.
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Depending on codec capabilities, possible values are 20, 24 and 32 bit.
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The default value is 24.
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.It Va dev.pcm.%d.rec.autosrc
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Run-time equivalent of the
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.Va hint.pcm.%d.rec.autosrc
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tunable.
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.El
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.Sh EXAMPLES
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Taking HP Compaq DX2300 with Realtek ALC888 HDA codec for example.
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This system has two audio connectors on a front side, three audio connectors
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on a rear side and one internal speaker.
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According to verbose driver output and the codec datasheet,
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this codec has five stereo DACs and two stereo ADCs, all of them are routable to
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any codec pin (external connector).
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All codec pins are reversible (could be configured either as input or output).
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.Pp
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So high codec uniformity and flexibility allow driver to configure it in many
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different ways, depending on requested pins usage described by pins configuration.
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The driver reports such default pin configuration when verbose messages enabled:
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.Bd -literal
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hdaa0: nid 0x as seq device conn jack loc color misc
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hdaa0: 20 01014020 2 0 Line-out Jack 1/8 Rear Green 0
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hdaa0: 21 99130110 1 0 Speaker Fixed ATAPI Onboard Unknown 1
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hdaa0: 22 411111f0 15 0 Speaker None 1/8 Rear Black 1 DISA
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hdaa0: 23 411111f0 15 0 Speaker None 1/8 Rear Black 1 DISA
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hdaa0: 24 01a19830 3 0 Mic Jack 1/8 Rear Pink 8
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hdaa0: 25 02a1983f 3 15 Mic Jack 1/8 Front Pink 8
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hdaa0: 26 01813031 3 1 Line-in Jack 1/8 Rear Blue 0
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hdaa0: 27 0221401f 1 15 Headphones Jack 1/8 Front Green 0
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hdaa0: 28 411111f0 15 0 Speaker None 1/8 Rear Black 1 DISA
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hdaa0: 30 411111f0 15 0 Speaker None 1/8 Rear Black 1 DISA
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hdaa0: 31 411111f0 15 0 Speaker None 1/8 Rear Black 1 DISA
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.Ed
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.Pp
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Here we can see, that the nodes with ID (nid) 25 and 27 are front panel
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connectors (Jack, Front), nids 20, 24 and 26 are rear panel connectors
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(Jack, Rear) and nid 21 is a built-in speaker (Fixed, Onboard).
|
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Pins with nids 22, 23, 28, 30 and 31 will be disabled by driver due to "None"
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connectivity.
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So the pin count and description matches to connectors that we have.
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.Pp
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Using association (as) and sequence (seq) fields values pins are grouped into
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3 associations:
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.Bd -literal
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hdaa0: Association 0 (1) out:
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hdaa0: Pin nid=21 seq=0
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hdaa0: Pin nid=27 seq=15
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hdaa0: Association 1 (2) out:
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hdaa0: Pin nid=20 seq=0
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hdaa0: Association 2 (3) in:
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hdaa0: Pin nid=24 seq=0
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hdaa0: Pin nid=26 seq=1
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hdaa0: Pin nid=25 seq=15
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.Ed
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.Pp
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Each
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.Xr pcm 4
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device uses two associations: one for playback and one for recording.
|
|
Associations processed and assigned to
|
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.Xr pcm 4
|
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devices in increasing numerical order.
|
|
In this case association #0 (1) will become
|
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.Li pcm0
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device playback, using the internal speakers and
|
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.Ar Headphones
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jack with speaker automute on the headphones jack connection.
|
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Association #1 (2) will become
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.Li pcm1
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playback, using the
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.Ar Line-out
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jack.
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Association #2 (3) will become
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.Li pcm0
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recording, using the external microphones and the
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.Ar Line-in
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jack.
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.Pp
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The
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.Nm
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driver provides extensive verbose messages to diagnose its operation
|
|
logic and describe its current codec configuration.
|
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.Pp
|
|
Using
|
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.Xr device.hints 5
|
|
it is possible to modify the configuration of the existing pins,
|
|
allowing a broad range of different audio setups.
|
|
Here are a few examples of some setups possible for this particular
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hardware:
|
|
.Ss Example 1
|
|
Setting the
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.Xr device.hints 5
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options
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.Bd -literal
|
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hint.hdac.0.cad0.nid20.config="as=1"
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hint.hdac.0.cad0.nid21.config="as=2"
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.Ed
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.Pp
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will swap line-out and speaker functions.
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So the
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.Li pcm0
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device will play to the line-out and headphones jacks.
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Line-out will be muted on the headphones jack connection.
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Recording on
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.Li pcm0
|
|
will go from two external microphones and line-in jacks.
|
|
.Li pcm1
|
|
playback will go to the internal speaker.
|
|
.Ss Example 2
|
|
Setting the
|
|
.Xr device.hints 5
|
|
options
|
|
.Bd -literal
|
|
hint.hdac.0.cad0.nid20.config="as=1 seq=15 device=Headphones"
|
|
hint.hdac.0.cad0.nid27.config="as=2 seq=0"
|
|
hint.hdac.0.cad0.nid25.config="as=4 seq=0"
|
|
.Ed
|
|
.Pp
|
|
will split the headphones and one of the microphones to a separate device.
|
|
The
|
|
.Li pcm0
|
|
device will play to the internal speaker and to the line-out jack, with
|
|
speaker automute on the line-out jack connection.
|
|
Recording on
|
|
.Li pcm0
|
|
will use input from one external microphone and the line-in jacks.
|
|
The
|
|
.Li pcm1
|
|
device will be completely dedicated to a headset (headphones and mic)
|
|
connected to the front connectors.
|
|
.Ss Example 3
|
|
Setting the
|
|
.Xr device.hints 5
|
|
options
|
|
.Bd -literal
|
|
hint.hdac.0.cad0.nid20.config="as=1 seq=0"
|
|
hint.hdac.0.cad0.nid26.config="as=2 seq=0"
|
|
hint.hdac.0.cad0.nid27.config="as=3 seq=0"
|
|
hint.hdac.0.cad0.nid25.config="as=4 seq=0"
|
|
hint.hdac.0.cad0.nid24.config="as=5 seq=0 device=Line-out"
|
|
hint.hdac.0.cad0.nid21.config="as=6 seq=0"
|
|
.Ed
|
|
.Pp
|
|
will give 4 independent devices:
|
|
.Li pcm0
|
|
.Pq line-out and line-in ,
|
|
.Li pcm1
|
|
.Pq headphones and mic ,
|
|
.Li pcm2
|
|
.Pq additional line-out via retasked rear mic jack ,
|
|
and
|
|
.Li pcm3
|
|
.Pq internal speaker .
|
|
.Ss Example 4
|
|
Setting the
|
|
.Xr device.hints 5
|
|
options
|
|
.Bd -literal
|
|
hint.hdac.0.cad0.nid20.config="as=1 seq=0"
|
|
hint.hdac.0.cad0.nid24.config="as=1 seq=1 device=Line-out"
|
|
hint.hdac.0.cad0.nid26.config="as=1 seq=2 device=Line-out"
|
|
hint.hdac.0.cad0.nid21.config="as=2 seq=0"
|
|
.Ed
|
|
.Pp
|
|
will give 2 devices:
|
|
.Li pcm0
|
|
for 5.1 playback via 3 rear connectors (line-out and retasked
|
|
mic and line-in) and headset (headphones and mic) at front connectors.
|
|
.Li pcm1
|
|
for internal speaker playback.
|
|
On headphones connection rear connectors will be muted.
|
|
.Sh MIXER CONTROLS
|
|
Depending on codec configuration, these controls and signal sources could be
|
|
reported to
|
|
.Xr sound 4 :
|
|
.Bl -tag -width ".Va speaker" -offset indent
|
|
.It Va vol
|
|
overall output level (volume)
|
|
.It Va rec
|
|
overall recording level
|
|
.It Va igain
|
|
input-to-output monitoring loopback level
|
|
.It Va ogain
|
|
external amplifier control
|
|
.It Va pcm
|
|
PCM playback
|
|
.It Va mix
|
|
input mix
|
|
.It Va mic
|
|
first external or second internal microphone input
|
|
.It Va monitor
|
|
first internal or second external microphone input
|
|
.It Va line , Va line1 , Va line2 , Va line3
|
|
analog (line) inputs
|
|
.It Va dig1 , Va dig2 , Va dig3
|
|
digital (S/PDIF, HDMI or DisplayPort) inputs
|
|
.It Va cd
|
|
CD input
|
|
.It Va speaker
|
|
PC speaker input
|
|
.It Va phin , Va phout , Va radio , Va video
|
|
other random inputs
|
|
.El
|
|
.Pp
|
|
Controls have different precision.
|
|
Some could be just an on/off triggers.
|
|
Most of controls use logarithmic scale.
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports controllers having PCI class 4 (multimedia) and
|
|
subclass 3 (HDA), compatible with Intel HDA specification.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports more than two hundred different controllers and CODECs.
|
|
There is no sense to list all of them here, as in most cases specific CODEC
|
|
configuration and wiring are more important then type of the CODEC itself.
|
|
.Sh SEE ALSO
|
|
.Xr snd_ich 4 ,
|
|
.Xr sound 4 ,
|
|
.Xr device.hints 5 ,
|
|
.Xr loader.conf 5 ,
|
|
.Xr sysctl 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
device driver first appeared in
|
|
.Fx 6.3 .
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Stephane E. Potvin Aq Mt sepotvin@videotron.ca ,
|
|
.An Ariff Abdullah Aq Mt ariff@FreeBSD.org
|
|
and
|
|
.An Alexander Motin Aq Mt mav@FreeBSD.org .
|
|
This manual page was written by
|
|
.An Joel Dahl Aq Mt joel@FreeBSD.org ,
|
|
.An Alexander Motin Aq Mt mav@FreeBSD.org
|
|
and
|
|
.An Giorgos Keramidas Aq Mt keramida@FreeBSD.org .
|
|
.Sh BUGS
|
|
Some Hardware/OEM vendors tend to screw up BIOS settings or use custom
|
|
unusual CODEC wiring that create problems to the driver.
|
|
This may result in missing pcm devices, or a state where the
|
|
.Nm
|
|
driver seems to attach and work, but no sound is played.
|
|
Some cases can be solved by tuning
|
|
.Pa loader.conf
|
|
variables.
|
|
But before trying to fix problem that way, make sure that there really is
|
|
a problem and that the PCM audio device in use really corresponds to the
|
|
expected audio connector.
|
|
.Pp
|
|
Some vendors use non-standardized General Purpose I/O (GPIO) pins of the codec
|
|
to control external amplifiers.
|
|
In some cases setting a combination of GPIO bits may be needed to make
|
|
sound work on a specific device.
|
|
.Pp
|
|
HDMI and DisplayPort audio may also require support from video driver.
|