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336 lines
9.0 KiB
C
336 lines
9.0 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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* $FreeBSD$
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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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#define AC97_MUTE 0x8000
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#define AC97_REG_RESET 0x00
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#define AC97_MIX_MASTER 0x02
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#define AC97_MIX_PHONES 0x04
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#define AC97_MIX_MONO 0x06
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#define AC97_MIX_TONE 0x08
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#define AC97_MIX_BEEP 0x0a
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#define AC97_MIX_PHONE 0x0c
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#define AC97_MIX_MIC 0x0e
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#define AC97_MIX_LINE 0x10
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#define AC97_MIX_CD 0x12
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#define AC97_MIX_VIDEO 0x14
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#define AC97_MIX_AUX 0x16
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#define AC97_MIX_PCM 0x18
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#define AC97_REG_RECSEL 0x1a
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#define AC97_MIX_RGAIN 0x1c
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#define AC97_MIX_MGAIN 0x1e
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#define AC97_REG_GEN 0x20
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#define AC97_REG_3D 0x22
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#define AC97_REG_POWER 0x26
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#define AC97_REG_ID1 0x7c
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#define AC97_REG_ID2 0x7e
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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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};
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struct ac97_info {
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ac97_read *read;
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ac97_write *write;
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void *devinfo;
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char id[4];
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char rev;
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unsigned caps, se;
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struct ac97mixtable_entry mix[32];
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};
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struct ac97_codecid {
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u_int32_t id;
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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 },
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[SOUND_MIXER_BASS] = { AC97_MIX_TONE, 4, 8, 0, 0, 0, 1 },
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[SOUND_MIXER_TREBLE] = { AC97_MIX_TONE, 4, 0, 0, 0, 0, 1 },
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[SOUND_MIXER_PCM] = { AC97_MIX_PCM, 5, 0, 1, 1, 0, 0 },
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[SOUND_MIXER_SPEAKER] = { AC97_MIX_BEEP, 4, 1, 0, 1, 0, 0 },
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[SOUND_MIXER_LINE] = { AC97_MIX_LINE, 5, 0, 1, 1, 5, 0 },
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[SOUND_MIXER_MIC] = { AC97_MIX_MIC, 5, 0, 0, 1, 1, 0 },
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[SOUND_MIXER_CD] = { AC97_MIX_CD, 5, 0, 1, 1, 2, 0 },
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[SOUND_MIXER_LINE1] = { AC97_MIX_AUX, 5, 0, 1, 1, 4, 0 },
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[SOUND_MIXER_VIDEO] = { AC97_MIX_VIDEO, 5, 0, 1, 1, 3, 0 },
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[SOUND_MIXER_RECLEV] = { -AC97_MIX_RGAIN, 4, 0, 1, 1, 0, 0 }
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};
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static const unsigned ac97mixdevs =
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SOUND_MASK_VOLUME |
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SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE |
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SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_LINE1 |
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SOUND_MASK_VIDEO | SOUND_MASK_RECLEV;
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static const unsigned ac97recdevs =
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SOUND_MASK_VOLUME | SOUND_MASK_LINE | SOUND_MASK_MIC |
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SOUND_MASK_CD | SOUND_MASK_LINE1 | SOUND_MASK_VIDEO;
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static struct ac97_codecid ac97codecid[] = {
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{ 0x414B4D00, "Asahi Kasei AK4540" },
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{ 0x43525900, "Cirrus Logic CS4297" },
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{ 0x83847600, "SigmaTel STAC????" },
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{ 0x83847604, "SigmaTel STAC9701/3/4/5" },
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{ 0x83847605, "SigmaTel STAC9704" },
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{ 0x83847608, "SigmaTel STAC9708" },
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{ 0x83847609, "SigmaTel STAC9721" },
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{ 0, NULL }
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};
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static char *ac97enhancement[] = {
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"",
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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 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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codec->write(codec->devinfo, AC97_REG_RECSEL, val);
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return 0;
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} else 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 != 0) {
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int max, val, reg = (e->reg >= 0)? e->reg : -e->reg;
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if (!e->stereo) 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 = codec->read(codec->devinfo, 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) val = AC97_MUTE;
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codec->write(codec->devinfo, reg, val);
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return left | (right << 8);
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} else return -1;
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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 = codec->read(codec->devinfo, e->reg);
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if (val == AC97_MUTE && e->mute == 1) 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 return -1;
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}
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#endif
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static unsigned
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ac97_init(struct ac97_info *codec)
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{
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unsigned i, j;
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u_int32_t id;
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for (i = 0; i < 32; i++) codec->mix[i] = ac97mixtable_default[i];
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codec->write(codec->devinfo, AC97_REG_POWER, 0);
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codec->write(codec->devinfo, AC97_REG_RESET, 0);
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DELAY(10000);
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i = codec->read(codec->devinfo, 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 = (codec->read(codec->devinfo, AC97_REG_ID1) << 16) |
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codec->read(codec->devinfo, AC97_REG_ID2);
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codec->rev = id & 0x000000ff;
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codec->write(codec->devinfo, AC97_MIX_MASTER, 0x20);
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if ((codec->read(codec->devinfo, AC97_MIX_MASTER) & 0x20) == 0x20)
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codec->mix[SOUND_MIXER_VOLUME].bits++;
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codec->write(codec->devinfo, AC97_MIX_MASTER, 0x00);
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if (bootverbose) {
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printf("ac97: codec id 0x%8x", id);
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for (i = 0; ac97codecid[i].id; i++) {
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if (ac97codecid[i].id == id) printf(" (%s)", ac97codecid[i].name);
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}
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printf("\nac97: codec features ");
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for (i = j = 0; i < 10; i++) {
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if (codec->caps & (1 << i)) {
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printf("%s%s", j? ", " : "", ac97feature[i]);
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j++;
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}
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}
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printf("%s%d bit master volume", j? ", " : "", codec->mix[SOUND_MIXER_VOLUME].bits);
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printf("%s%s\n", j? ", " : "", ac97enhancement[codec->se]);
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}
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if ((codec->read(codec->devinfo, AC97_REG_POWER) & 2) == 0)
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printf("ac97: dac not ready\n");
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return 0;
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}
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struct ac97_info *
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ac97_create(void *devinfo, ac97_read *rd, ac97_write *wr)
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{
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struct ac97_info *codec;
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codec = (struct ac97_info *)malloc(sizeof *codec, M_DEVBUF, M_NOWAIT);
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if (codec != NULL) {
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codec->read = rd;
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codec->write = wr;
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codec->devinfo = devinfo;
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}
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return codec;
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}
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static int
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ac97mix_init(snd_mixer *m)
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{
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struct ac97_info *codec = mix_getdevinfo(m);
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if (codec == NULL) return -1;
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ac97_init(codec);
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mix_setdevs(m, ac97mixdevs | ((codec->caps & 4)? SOUND_MASK_BASS | SOUND_MASK_TREBLE : 0));
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mix_setrecdevs(m, ac97recdevs);
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return 0;
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}
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static int
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ac97mix_set(snd_mixer *m, unsigned dev, unsigned left, unsigned right)
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{
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struct ac97_info *codec = mix_getdevinfo(m);
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if (codec == NULL) return -1;
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return ac97_setmixer(codec, dev, left, right);
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}
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static int
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ac97mix_setrecsrc(snd_mixer *m, u_int32_t src)
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{
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int i;
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struct ac97_info *codec = mix_getdevinfo(m);
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if (codec == NULL) return -1;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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if ((src & (1 << i)) != 0) break;
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return (ac97_setrecsrc(codec, i) == 0)? 1 << i : -1;
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}
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snd_mixer ac97_mixer = {
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"AC97 mixer",
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ac97mix_init,
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ac97mix_set,
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ac97mix_setrecsrc,
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};
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