137 lines
6.0 KiB
Groff
137 lines
6.0 KiB
Groff
.\" $NetBSD: cmpci.4,v 1.4 2001/11/04 07:00:39 itohy Exp $
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.\"
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.\" Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Takuya SHIOZAKI <AoiMoe@imou.to> .
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by ITOH Yasufumi.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd April 29, 2000
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.Dt CMPCI 4
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.Os
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.Sh NAME
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.Nm cmpci
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.Nd C-Media CMI8x38 audio device driver
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.Sh SYNOPSIS
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.Cd "cmpci* at pci? dev ? function ?"
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.Cd "audio* at cmpci?"
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.Cd "mpu* at cmpci?"
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.Cd "opl* at cmpci? flags 1"
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.Sh DESCRIPTION
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The
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.Nm
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device driver supports C-Media CMI8x38 based sound cards.
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.Pp
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The device has
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SPDIF input/output interfaces,
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16bit CODEC with analog mixer,
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OPL3 FM Synthesizer,
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and MPU401 compatible MIDI I/O port interface.
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.Sh MIXER DEVICE
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The mixer device of
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.Nm
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driver can be accessed via
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.Xr mixerctl 1
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command.
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The complex structure is analyzed as follows.
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.Bd -literal
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SPDIF in ----------------------
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#1(coax)->|spdin1 | R -----------------------
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#2(opt)-->|spdin2 spdif.input |--*->--|spdin spdif.output |--> SPDIF
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-->|spdout | | -->|playback | output
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| ---------------------- | | -----------------------
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--------------------<------+-*
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---------<-------------------+-+----------------------------------
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| ------------------------ | | ----------------------- |
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-->|legacy spdif.output. |--+-*-->|spdout | |
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-->|wave playback | ----->|spdin spdif.monitor |---- |
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| ------------------------ NC-|off | | |
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---------<-- spdif ----------------------- | |
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-------+------- dac ------------ ----------------- v |
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wave -->|playback.mode|---->|inputs.dac|-*->|inputs.dac.mute|->----- |
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playback --------------- ------------ R ----------------- | + | |
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----------------- --------------------- |mix| |
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FM synthesizer -->|inputs.fmsynth |--*->|inputs.fmsynth.mute|-->----- |
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----------------- R --------------------- *->--
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CD ---------------------- --------------------------- v
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LINE-IN ->|inputs.{cd,line,aux}|-*>|inputs.{cd,line,aux}.mute|->-----
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AUX ---------------------- R --------------------------- | |
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------------------ | |
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PC-SPK -->| inputs.speaker |----------------------------------->| + |
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------------------ | |
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------------------- ------------ ----------------- |mix|
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MIC --*-->|inputs.mic.preamp|->|inputs.mic|->|inputs.mic.mute|->| |
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| ------------------- ------------ ----------------- -----
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| ------------ ----------------- |
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--->|record.mic|-->| | v
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------------ | record.source |-->to -----------
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*R-->| (select, mix) | recording |outputs.*|-->
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----------------- ----------- SPK
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(front)
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.Ed
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.Pp
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Note the 2nd SPDIF input exists only on CMI8738/PCI-6ch versions.
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.Sh MIXER EXAMPLES
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Here are examples about wave playback and SPDIF input/output ports.
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.Bl -tag -width 1n
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.It Playback to speaker, SPDIF input to SPDIF output
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.Dl mixerctl -w playback.mode=dac spdif.output=spdin spdif.monitor=off
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.It Playback to SPDIF output, SPDIF input to speaker
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.Dl mixerctl -w playback.mode=spdif spdif.output=playback spdif.output.playback=wave spdif.monitor=spdin
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.It SPDIF input to both SPDIF output and speaker
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.Dl mixerctl -w spdif.output=spdin spdif.monitor=spdin
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.It Playback to both SPDIF output and speaker
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.Dl mixerctl -w playback.mode=spdif spdif.output=playback spdif.output.playback=wave spdif.monitor=spdout
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.It Mix playback and SPDIF input to speaker
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.Dl mixerctl -w playback.mode=dac spdif.monitor=spdin
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.El
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.Sh SEE ALSO
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.Xr mixerctl 1 ,
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.Xr audio 4 ,
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.Xr midi 4 ,
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.Xr mpu 4 ,
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.Xr opl 4 ,
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.Xr pci 4
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.Sh HISTORY
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The
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.Nm
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device driver appeared in
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.Nx 1.5 .
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.Sh BUGS
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4ch/6ch playback is not yet available.
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Joystick port is not supported.
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.Pp
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.Dv spdif.output.playback=legacy
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does not seem to work properly.
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