672 lines
17 KiB
C
672 lines
17 KiB
C
/*
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* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
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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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#include <dev/sound/pcm/sound.h>
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#include <dev/sound/pcm/ac97.h>
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#include "mixer_if.h"
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SND_DECLARE_FILE("$FreeBSD$");
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MALLOC_DEFINE(M_AC97, "ac97", "ac97 codec");
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struct ac97mixtable_entry {
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int reg:8;
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unsigned bits:4;
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unsigned ofs:4;
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unsigned stereo:1;
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unsigned mute:1;
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unsigned recidx:4;
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unsigned mask:1;
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unsigned enable:1;
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};
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#define AC97_NAMELEN 16
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struct ac97_info {
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kobj_t methods;
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device_t dev;
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void *devinfo;
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char *id;
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char rev;
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unsigned count, caps, se, extcaps, extid, extstat, noext:1;
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u_int32_t flags;
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struct ac97mixtable_entry mix[32];
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char name[AC97_NAMELEN];
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struct mtx *lock;
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};
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struct ac97_codecid {
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u_int32_t id, noext:1;
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char *name;
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};
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static const struct ac97mixtable_entry ac97mixtable_default[32] = {
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[SOUND_MIXER_VOLUME] = { AC97_MIX_MASTER, 5, 0, 1, 1, 6, 0, 1 },
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[SOUND_MIXER_MONITOR] = { AC97_MIX_AUXOUT, 5, 0, 1, 1, 0, 0, 0 },
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[SOUND_MIXER_PHONEOUT] = { AC97_MIX_MONO, 5, 0, 0, 1, 7, 0, 0 },
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[SOUND_MIXER_BASS] = { AC97_MIX_TONE, 4, 8, 0, 0, 0, 1, 0 },
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[SOUND_MIXER_TREBLE] = { AC97_MIX_TONE, 4, 0, 0, 0, 0, 1, 0 },
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[SOUND_MIXER_PCM] = { AC97_MIX_PCM, 5, 0, 1, 1, 0, 0, 1 },
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[SOUND_MIXER_SPEAKER] = { AC97_MIX_BEEP, 4, 1, 0, 1, 0, 0, 0 },
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[SOUND_MIXER_LINE] = { AC97_MIX_LINE, 5, 0, 1, 1, 5, 0, 1 },
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[SOUND_MIXER_PHONEIN] = { AC97_MIX_PHONE, 5, 0, 0, 1, 8, 0, 0 },
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[SOUND_MIXER_MIC] = { AC97_MIX_MIC, 5, 0, 0, 1, 1, 0, 1 },
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[SOUND_MIXER_CD] = { AC97_MIX_CD, 5, 0, 1, 1, 2, 0, 1 },
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[SOUND_MIXER_LINE1] = { AC97_MIX_AUX, 5, 0, 1, 1, 4, 0, 0 },
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[SOUND_MIXER_VIDEO] = { AC97_MIX_VIDEO, 5, 0, 1, 1, 3, 0, 0 },
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[SOUND_MIXER_RECLEV] = { -AC97_MIX_RGAIN, 4, 0, 1, 1, 0, 0, 1 }
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};
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static struct ac97_codecid ac97codecid[] = {
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{ 0x41445303, 0, "Analog Devices AD1819" },
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{ 0x41445340, 0, "Analog Devices AD1881" },
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{ 0x41445348, 0, "Analog Devices AD1881A" },
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{ 0x41445360, 0, "Analog Devices AD1885" },
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{ 0x414b4d00, 1, "Asahi Kasei AK4540" },
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{ 0x414b4d01, 1, "Asahi Kasei AK4542" },
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{ 0x414b4d02, 1, "Asahi Kasei AK4543" },
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{ 0x414c4710, 0, "Avance Logic ALC200/200P" },
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{ 0x43525900, 0, "Cirrus Logic CS4297" },
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{ 0x43525903, 0, "Cirrus Logic CS4297" },
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{ 0x43525913, 0, "Cirrus Logic CS4297A" },
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{ 0x43525914, 0, "Cirrus Logic CS4297B" },
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{ 0x43525923, 0, "Cirrus Logic CS4294C" },
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{ 0x4352592b, 0, "Cirrus Logic CS4298C" },
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{ 0x43525931, 0, "Cirrus Logic CS4299A" },
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{ 0x43525933, 0, "Cirrus Logic CS4299C" },
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{ 0x43525934, 0, "Cirrus Logic CS4299D" },
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{ 0x43525941, 0, "Cirrus Logic CS4201A" },
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{ 0x43525951, 0, "Cirrus Logic CS4205A" },
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{ 0x43525961, 0, "Cirrus Logic CS4291A" },
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{ 0x45838308, 0, "ESS Technology ES1921" },
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{ 0x49434511, 0, "ICEnsemble ICE1232" },
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{ 0x4e534331, 0, "National Semiconductor LM4549" },
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{ 0x83847600, 0, "SigmaTel STAC9700/9783/9784" },
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{ 0x83847604, 0, "SigmaTel STAC9701/9703/9704/9705" },
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{ 0x83847605, 0, "SigmaTel STAC9704" },
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{ 0x83847608, 0, "SigmaTel STAC9708/9711" },
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{ 0x83847609, 0, "SigmaTel STAC9721/9723" },
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{ 0x83847644, 0, "SigmaTel STAC9744" },
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{ 0x83847656, 0, "SigmaTel STAC9756/9757" },
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{ 0x53494c22, 0, "Silicon Laboratory Si3036" },
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{ 0x53494c23, 0, "Silicon Laboratory Si3038" },
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{ 0x54524103, 0, "TriTech TR?????" },
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{ 0x54524106, 0, "TriTech TR28026" },
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{ 0x54524108, 0, "TriTech TR28028" },
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{ 0x54524123, 0, "TriTech TR28602" },
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{ 0x574d4c00, 0, "Wolfson WM9701A" },
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{ 0x574d4c03, 0, "Wolfson WM9703/9704" },
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{ 0x574d4c04, 0, "Wolfson WM9704 (quad)" },
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{ 0, 0, NULL }
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};
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static char *ac97enhancement[] = {
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"no 3D Stereo Enhancement",
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"Analog Devices Phat Stereo",
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"Creative Stereo Enhancement",
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"National Semi 3D Stereo Enhancement",
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"Yamaha Ymersion",
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"BBE 3D Stereo Enhancement",
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"Crystal Semi 3D Stereo Enhancement",
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"Qsound QXpander",
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"Spatializer 3D Stereo Enhancement",
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"SRS 3D Stereo Enhancement",
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"Platform Tech 3D Stereo Enhancement",
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"AKM 3D Audio",
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"Aureal Stereo Enhancement",
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"Aztech 3D Enhancement",
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"Binaura 3D Audio Enhancement",
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"ESS Technology Stereo Enhancement",
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"Harman International VMAx",
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"Nvidea 3D Stereo Enhancement",
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"Philips Incredible Sound",
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"Texas Instruments 3D Stereo Enhancement",
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"VLSI Technology 3D Stereo Enhancement",
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"TriTech 3D Stereo Enhancement",
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"Realtek 3D Stereo Enhancement",
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"Samsung 3D Stereo Enhancement",
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"Wolfson Microelectronics 3D Enhancement",
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"Delta Integration 3D Enhancement",
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"SigmaTel 3D Enhancement",
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"Reserved 27",
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"Rockwell 3D Stereo Enhancement",
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"Reserved 29",
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"Reserved 30",
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"Reserved 31"
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};
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static char *ac97feature[] = {
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"mic channel",
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"reserved",
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"tone",
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"simulated stereo",
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"headphone",
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"bass boost",
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"18 bit DAC",
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"20 bit DAC",
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"18 bit ADC",
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"20 bit ADC"
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};
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static char *ac97extfeature[] = {
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"variable rate PCM",
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"double rate PCM",
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"reserved 1",
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"variable rate mic",
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"reserved 2",
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"reserved 3",
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"center DAC",
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"surround DAC",
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"LFE DAC",
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"AMAP",
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"reserved 4",
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"reserved 5",
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"reserved 6",
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"reserved 7",
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};
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static u_int16_t
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rdcd(struct ac97_info *codec, int reg)
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{
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return AC97_READ(codec->methods, codec->devinfo, reg);
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}
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static void
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wrcd(struct ac97_info *codec, int reg, u_int16_t val)
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{
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AC97_WRITE(codec->methods, codec->devinfo, reg, val);
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}
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static void
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ac97_reset(struct ac97_info *codec)
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{
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u_int32_t i, ps;
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wrcd(codec, AC97_REG_RESET, 0);
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for (i = 0; i < 500; i++) {
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ps = rdcd(codec, AC97_REG_POWER) & AC97_POWER_STATUS;
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if (ps == AC97_POWER_STATUS)
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return;
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DELAY(1000);
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}
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device_printf(codec->dev, "AC97 reset timed out.");
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}
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int
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ac97_setrate(struct ac97_info *codec, int which, int rate)
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{
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u_int16_t v;
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switch(which) {
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case AC97_REGEXT_FDACRATE:
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case AC97_REGEXT_SDACRATE:
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case AC97_REGEXT_LDACRATE:
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case AC97_REGEXT_LADCRATE:
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case AC97_REGEXT_MADCRATE:
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break;
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default:
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return -1;
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}
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snd_mtxlock(codec->lock);
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if (rate != 0) {
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v = rate;
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if (codec->extstat & AC97_EXTCAP_DRA)
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v >>= 1;
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wrcd(codec, which, v);
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}
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v = rdcd(codec, which);
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if (codec->extstat & AC97_EXTCAP_DRA)
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v <<= 1;
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snd_mtxunlock(codec->lock);
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return v;
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}
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int
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ac97_setextmode(struct ac97_info *codec, u_int16_t mode)
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{
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mode &= AC97_EXTCAPS;
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if ((mode & ~codec->extcaps) != 0) {
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device_printf(codec->dev, "ac97 invalid mode set 0x%04x\n",
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mode);
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return -1;
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}
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snd_mtxlock(codec->lock);
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wrcd(codec, AC97_REGEXT_STAT, mode);
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codec->extstat = rdcd(codec, AC97_REGEXT_STAT) & AC97_EXTCAPS;
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snd_mtxunlock(codec->lock);
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return (mode == codec->extstat)? 0 : -1;
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}
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u_int16_t
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ac97_getextmode(struct ac97_info *codec)
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{
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return codec->extstat;
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}
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u_int16_t
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ac97_getextcaps(struct ac97_info *codec)
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{
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return codec->extcaps;
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}
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u_int16_t
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ac97_getcaps(struct ac97_info *codec)
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{
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return codec->caps;
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}
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static int
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ac97_setrecsrc(struct ac97_info *codec, int channel)
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{
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struct ac97mixtable_entry *e = &codec->mix[channel];
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if (e->recidx > 0) {
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int val = e->recidx - 1;
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val |= val << 8;
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snd_mtxlock(codec->lock);
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wrcd(codec, AC97_REG_RECSEL, val);
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snd_mtxunlock(codec->lock);
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return 0;
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} else
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return -1;
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}
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static int
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ac97_setmixer(struct ac97_info *codec, unsigned channel, unsigned left, unsigned right)
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{
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struct ac97mixtable_entry *e = &codec->mix[channel];
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if (e->reg && e->enable && e->bits) {
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int max, val, reg = (e->reg >= 0)? e->reg : -e->reg;
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if (!e->stereo)
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right = left;
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if (e->reg > 0) {
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left = 100 - left;
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right = 100 - right;
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}
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max = (1 << e->bits) - 1;
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left = (left * max) / 100;
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right = (right * max) / 100;
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val = (left << 8) | right;
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left = (left * 100) / max;
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right = (right * 100) / max;
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if (e->reg > 0) {
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left = 100 - left;
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right = 100 - right;
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}
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if (!e->stereo) {
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val &= max;
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val <<= e->ofs;
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if (e->mask) {
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int cur = rdcd(codec, e->reg);
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val |= cur & ~(max << e->ofs);
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}
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}
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if (left == 0 && right == 0 && e->mute == 1)
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val = AC97_MUTE;
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snd_mtxlock(codec->lock);
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wrcd(codec, reg, val);
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snd_mtxunlock(codec->lock);
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return left | (right << 8);
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} else {
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/* printf("ac97_setmixer: reg=%d, bits=%d, enable=%d\n", e->reg, e->bits, e->enable); */
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return -1;
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}
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}
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#if 0
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static int
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ac97_getmixer(struct ac97_info *codec, int channel)
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{
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struct ac97mixtable_entry *e = &codec->mix[channel];
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if (channel < SOUND_MIXER_NRDEVICES && e->reg != 0) {
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int max, val, volume;
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max = (1 << e->bits) - 1;
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val = rdcd(code, e->reg);
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if (val == AC97_MUTE && e->mute == 1)
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volume = 0;
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else {
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if (e->stereo == 0) val >>= e->ofs;
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val &= max;
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volume = (val * 100) / max;
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if (e->reg > 0) volume = 100 - volume;
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}
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return volume;
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} else
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return -1;
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}
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#endif
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static void
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ac97_fix_auxout(struct ac97_info *codec)
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{
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/* Determine what AUXOUT really means, it can be:
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*
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* 1. Headphone out.
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* 2. 4-Channel Out
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* 3. True line level out (effectively master volume).
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*
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* See Sections 5.2.1 and 5.27 for AUX_OUT Options in AC97r2.{2,3}.
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*/
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if (codec->caps & AC97_CAP_HEADPHONE) {
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/* XXX We should probably check the AUX_OUT initial value.
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* Leave AC97_MIX_AUXOUT - SOUND_MIXER_MONITOR relationship */
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return;
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} else if (codec->extcaps & AC97_EXTCAP_SDAC &&
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rdcd(codec, AC97_MIXEXT_SURROUND) == 0x8080) {
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/* 4-Channel Out, add an additional gain setting. */
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codec->mix[SOUND_MIXER_OGAIN] = codec->mix[SOUND_MIXER_MONITOR];
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} else {
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/* Master volume is/maybe fixed in h/w, not sufficiently
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* clear in spec to blat SOUND_MIXER_MASTER. */
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codec->mix[SOUND_MIXER_OGAIN] = codec->mix[SOUND_MIXER_MONITOR];
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}
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/* Blat monitor, inappropriate label if we get here */
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bzero(&codec->mix[SOUND_MIXER_MONITOR],
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sizeof(codec->mix[SOUND_MIXER_MONITOR]));
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}
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static unsigned
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ac97_initmixer(struct ac97_info *codec)
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{
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unsigned i, j, k, old;
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u_int32_t id;
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snd_mtxlock(codec->lock);
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codec->count = AC97_INIT(codec->methods, codec->devinfo);
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if (codec->count == 0) {
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device_printf(codec->dev, "ac97 codec init failed\n");
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snd_mtxunlock(codec->lock);
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return ENODEV;
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}
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wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 : 0x0000);
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ac97_reset(codec);
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wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 : 0x0000);
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i = rdcd(codec, AC97_REG_RESET);
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codec->caps = i & 0x03ff;
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codec->se = (i & 0x7c00) >> 10;
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id = (rdcd(codec, AC97_REG_ID1) << 16) | rdcd(codec, AC97_REG_ID2);
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codec->rev = id & 0x000000ff;
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if (id == 0 || id == 0xffffffff) {
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device_printf(codec->dev, "ac97 codec invalid or not present (id == %x)\n", id);
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snd_mtxunlock(codec->lock);
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return ENODEV;
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}
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codec->noext = 0;
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codec->id = NULL;
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for (i = 0; ac97codecid[i].id; i++) {
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if (ac97codecid[i].id == id) {
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codec->id = ac97codecid[i].name;
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codec->noext = ac97codecid[i].noext;
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}
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}
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codec->extcaps = 0;
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codec->extid = 0;
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codec->extstat = 0;
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if (!codec->noext) {
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i = rdcd(codec, AC97_REGEXT_ID);
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if (i != 0xffff) {
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codec->extcaps = i & 0x3fff;
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codec->extid = (i & 0xc000) >> 14;
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codec->extstat = rdcd(codec, AC97_REGEXT_STAT) & AC97_EXTCAPS;
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}
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}
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for (i = 0; i < 32; i++) {
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codec->mix[i] = ac97mixtable_default[i];
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}
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ac97_fix_auxout(codec);
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for (i = 0; i < 32; i++) {
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k = codec->noext? codec->mix[i].enable : 1;
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if (k && (codec->mix[i].reg > 0)) {
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old = rdcd(codec, codec->mix[i].reg);
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wrcd(codec, codec->mix[i].reg, 0x3f);
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j = rdcd(codec, codec->mix[i].reg);
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wrcd(codec, codec->mix[i].reg, old);
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codec->mix[i].enable = (j != 0 && j != old)? 1 : 0;
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for (k = 1; j & (1 << k); k++);
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codec->mix[i].bits = j? k - codec->mix[i].ofs : 0;
|
|
}
|
|
/* printf("mixch %d, en=%d, b=%d\n", i, codec->mix[i].enable, codec->mix[i].bits); */
|
|
}
|
|
|
|
if (bootverbose) {
|
|
device_printf(codec->dev, "ac97 codec id 0x%08x", id);
|
|
if (codec->id)
|
|
printf(" (%s)", codec->id);
|
|
printf("\n");
|
|
device_printf(codec->dev, "ac97 codec features ");
|
|
for (i = j = 0; i < 10; i++)
|
|
if (codec->caps & (1 << i))
|
|
printf("%s%s", j++? ", " : "", ac97feature[i]);
|
|
printf("%s%d bit master volume", j++? ", " : "", codec->mix[SOUND_MIXER_VOLUME].bits);
|
|
printf("%s%s\n", j? ", " : "", ac97enhancement[codec->se]);
|
|
|
|
if (codec->extcaps != 0 || codec->extid) {
|
|
device_printf(codec->dev, "ac97 %s codec",
|
|
codec->extid? "secondary" : "primary");
|
|
if (codec->extcaps)
|
|
printf(" extended features ");
|
|
for (i = j = 0; i < 14; i++)
|
|
if (codec->extcaps & (1 << i))
|
|
printf("%s%s", j++? ", " : "", ac97extfeature[i]);
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
if ((rdcd(codec, AC97_REG_POWER) & 2) == 0)
|
|
device_printf(codec->dev, "ac97 codec reports dac not ready\n");
|
|
snd_mtxunlock(codec->lock);
|
|
return 0;
|
|
}
|
|
|
|
static unsigned
|
|
ac97_reinitmixer(struct ac97_info *codec)
|
|
{
|
|
snd_mtxlock(codec->lock);
|
|
codec->count = AC97_INIT(codec->methods, codec->devinfo);
|
|
if (codec->count == 0) {
|
|
device_printf(codec->dev, "ac97 codec init failed\n");
|
|
snd_mtxunlock(codec->lock);
|
|
return ENODEV;
|
|
}
|
|
|
|
wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 : 0x0000);
|
|
ac97_reset(codec);
|
|
wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 : 0x0000);
|
|
|
|
if (!codec->noext) {
|
|
wrcd(codec, AC97_REGEXT_STAT, codec->extstat);
|
|
if ((rdcd(codec, AC97_REGEXT_STAT) & AC97_EXTCAPS)
|
|
!= codec->extstat)
|
|
device_printf(codec->dev, "ac97 codec failed to reset extended mode (%x, got %x)\n",
|
|
codec->extstat,
|
|
rdcd(codec, AC97_REGEXT_STAT) &
|
|
AC97_EXTCAPS);
|
|
}
|
|
|
|
if ((rdcd(codec, AC97_REG_POWER) & 2) == 0)
|
|
device_printf(codec->dev, "ac97 codec reports dac not ready\n");
|
|
snd_mtxunlock(codec->lock);
|
|
return 0;
|
|
}
|
|
|
|
struct ac97_info *
|
|
ac97_create(device_t dev, void *devinfo, kobj_class_t cls)
|
|
{
|
|
struct ac97_info *codec;
|
|
|
|
codec = (struct ac97_info *)malloc(sizeof *codec, M_AC97, M_NOWAIT);
|
|
if (codec == NULL)
|
|
return NULL;
|
|
|
|
snprintf(codec->name, AC97_NAMELEN, "%s:ac97", device_get_nameunit(dev));
|
|
codec->lock = snd_mtxcreate(codec->name, "ac97 codec");
|
|
codec->methods = kobj_create(cls, M_AC97, M_WAITOK);
|
|
if (codec->methods == NULL) {
|
|
snd_mtxlock(codec->lock);
|
|
snd_mtxfree(codec->lock);
|
|
free(codec, M_AC97);
|
|
return NULL;
|
|
}
|
|
|
|
codec->dev = dev;
|
|
codec->devinfo = devinfo;
|
|
codec->flags = 0;
|
|
return codec;
|
|
}
|
|
|
|
void
|
|
ac97_destroy(struct ac97_info *codec)
|
|
{
|
|
snd_mtxlock(codec->lock);
|
|
if (codec->methods != NULL)
|
|
kobj_delete(codec->methods, M_AC97);
|
|
snd_mtxfree(codec->lock);
|
|
free(codec, M_AC97);
|
|
}
|
|
|
|
void
|
|
ac97_setflags(struct ac97_info *codec, u_int32_t val)
|
|
{
|
|
codec->flags = val;
|
|
}
|
|
|
|
u_int32_t
|
|
ac97_getflags(struct ac97_info *codec)
|
|
{
|
|
return codec->flags;
|
|
}
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
static int
|
|
ac97mix_init(struct snd_mixer *m)
|
|
{
|
|
struct ac97_info *codec = mix_getdevinfo(m);
|
|
u_int32_t i, mask;
|
|
|
|
if (codec == NULL)
|
|
return -1;
|
|
|
|
if (ac97_initmixer(codec))
|
|
return -1;
|
|
|
|
mask = 0;
|
|
for (i = 0; i < 32; i++)
|
|
mask |= codec->mix[i].enable? 1 << i : 0;
|
|
mix_setdevs(m, mask);
|
|
|
|
mask = 0;
|
|
for (i = 0; i < 32; i++)
|
|
mask |= codec->mix[i].recidx? 1 << i : 0;
|
|
mix_setrecdevs(m, mask);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ac97mix_uninit(struct snd_mixer *m)
|
|
{
|
|
struct ac97_info *codec = mix_getdevinfo(m);
|
|
|
|
if (codec == NULL)
|
|
return -1;
|
|
/*
|
|
if (ac97_uninitmixer(codec))
|
|
return -1;
|
|
*/
|
|
ac97_destroy(codec);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ac97mix_reinit(struct snd_mixer *m)
|
|
{
|
|
struct ac97_info *codec = mix_getdevinfo(m);
|
|
|
|
if (codec == NULL)
|
|
return -1;
|
|
return ac97_reinitmixer(codec);
|
|
}
|
|
|
|
static int
|
|
ac97mix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
|
|
{
|
|
struct ac97_info *codec = mix_getdevinfo(m);
|
|
|
|
if (codec == NULL)
|
|
return -1;
|
|
return ac97_setmixer(codec, dev, left, right);
|
|
}
|
|
|
|
static int
|
|
ac97mix_setrecsrc(struct snd_mixer *m, u_int32_t src)
|
|
{
|
|
int i;
|
|
struct ac97_info *codec = mix_getdevinfo(m);
|
|
|
|
if (codec == NULL)
|
|
return -1;
|
|
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
|
|
if ((src & (1 << i)) != 0)
|
|
break;
|
|
return (ac97_setrecsrc(codec, i) == 0)? 1 << i : -1;
|
|
}
|
|
|
|
static kobj_method_t ac97mixer_methods[] = {
|
|
KOBJMETHOD(mixer_init, ac97mix_init),
|
|
KOBJMETHOD(mixer_uninit, ac97mix_uninit),
|
|
KOBJMETHOD(mixer_reinit, ac97mix_reinit),
|
|
KOBJMETHOD(mixer_set, ac97mix_set),
|
|
KOBJMETHOD(mixer_setrecsrc, ac97mix_setrecsrc),
|
|
{ 0, 0 }
|
|
};
|
|
MIXER_DECLARE(ac97mixer);
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
kobj_class_t
|
|
ac97_getmixerclass(void)
|
|
{
|
|
return &ac97mixer_class;
|
|
}
|
|
|
|
|