Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Takuya SHIOZAKI <AoiMoe (at] imou.to> .
This code is derived from software contributed to The NetBSD Foundation
by ITOH Yasufumi.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd June 22, 2005 .Dt CMPCI 4 .Os .Sh NAME .Nm cmpci .Nd C-Media CMI8x38 audio device driver .Sh SYNOPSIS .Cd "cmpci* at pci? dev ? function ?" .Cd "audio* at audiobus?" .Cd "mpu* at cmpci?" .Cd "opl* at cmpci? flags 1" .Sh DESCRIPTION The .Nm device driver supports C-Media CMI8x38 based sound cards.
p The device has SPDIF input/output interfaces, 16bit CODEC with analog mixer, OPL3 FM Synthesizer, and MPU401 compatible MIDI I/O port interface. .Sh MIXER DEVICE The mixer device of .Nm driver can be accessed via .Xr mixerctl 1 command. The complex structure is analyzed as follows. d -literal SPDIF in ---------------------- #1(coax)-\*[Gt]|spdin1 | R ----------------------- #2(opt)--\*[Gt]|spdin2 spdif.input |--*-\*[Gt]--|spdin spdif.output |--\*[Gt] SPDIF --\*[Gt]|spdout | | --\*[Gt]|playback | output | ---------------------- | | ----------------------- --------------------\*[Lt]------+-* ---------\*[Lt]-------------------+-+---------------------------------- | ------------------------ | | ----------------------- | --\*[Gt]|legacy spdif.output. |--+-*--\*[Gt]|spdout | | --\*[Gt]|wave playback | -----\*[Gt]|spdin spdif.monitor |---- | | ------------------------ NC-|off | | | ---------\*[Lt]-- spdif ----------------------- | | -------+------- dac ------------ ----------------- v | wave --\*[Gt]|playback.mode|----\*[Gt]|inputs.dac|-*-\*[Gt]|inputs.dac.mute|-\*[Gt]----- | playback --------------- ------------ R ----------------- | + | | ----------------- --------------------- |mix| | FM synthesizer --\*[Gt]|inputs.fmsynth |--*-\*[Gt]|inputs.fmsynth.mute|--\*[Gt]----- | ----------------- R --------------------- *-\*[Gt]-- CD ---------------------- --------------------------- v LINE-IN -\*[Gt]|inputs.{cd,line,aux}|-*\*[Gt]|inputs.{cd,line,aux}.mute|-\*[Gt]----- AUX ---------------------- R --------------------------- | | ------------------ | | PC-SPK --\*[Gt]| inputs.speaker |-----------------------------------\*[Gt]| + | ------------------ | | ------------------- ------------ ----------------- |mix| MIC --*--\*[Gt]|inputs.mic.preamp|-\*[Gt]|inputs.mic|-\*[Gt]|inputs.mic.mute|-\*[Gt]| | | ------------------- ------------ ----------------- ----- | ------------ ----------------- | ---\*[Gt]|record.mic|--\*[Gt]| | v ------------ | record.source |--\*[Gt]to ----------- *R--\*[Gt]| (select, mix) | recording |outputs.*|--\*[Gt] ----------------- ----------- SPK (front) .Ed
p Note the 2nd SPDIF input exists only on CMI8738/PCI-6ch versions. .Sh MIXER EXAMPLES Here are examples about wave playback and SPDIF input/output ports. l -tag -width 1n t Playback to speaker, SPDIF input to SPDIF output .Dl mixerctl -w playback.mode=dac spdif.output=spdin spdif.monitor=off t Playback to SPDIF output, SPDIF input to speaker .Dl mixerctl -w playback.mode=spdif spdif.output=playback spdif.output.playback=wave spdif.monitor=spdin t SPDIF input to both SPDIF output and speaker .Dl mixerctl -w spdif.output=spdin spdif.monitor=spdin t Playback to both SPDIF output and speaker .Dl mixerctl -w playback.mode=spdif spdif.output=playback spdif.output.playback=wave spdif.monitor=spdout t Mix playback and SPDIF input to speaker .Dl mixerctl -w playback.mode=dac spdif.monitor=spdin .El .Sh SEE ALSO .Xr mixerctl 1 , .Xr audio 4 , .Xr midi 4 , .Xr mpu 4 , .Xr opl 4 , .Xr pci 4 .Sh HISTORY The .Nm device driver appeared in .Nx 1.5 . .Sh BUGS 4ch/6ch playback is not yet available. Joystick port is not supported.
p .Dv spdif.output.playback=legacy does not seem to work properly.
Indexes created Thu Oct 02 01:09:59 GMT 2025