131 lines
5.0 KiB
C
131 lines
5.0 KiB
C
/*
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* sound/ad1848_mixer.h
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*
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* Definitions for the mixer of AD1848 and compatible codecs.
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*
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* Copyright by Hannu Savolainen 1994
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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 are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* 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 ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* 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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/*
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* The AD1848 codec has generic input lines called Line, Aux1 and Aux2.
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* Soundcard manufacturers have connected actual inputs (CD, synth, line,
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* etc) to these inputs in different order. Therefore it's difficult
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* to assign mixer channels to to these inputs correctly. The following
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* contains two alternative mappings. The first one is for GUS MAX and
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* the second is just a generic one (line1, line2 and line3).
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* (Actually this is not a mapping but rather some kind of interleaving
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* solution).
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*/
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#ifdef GUSMAX_MIXER
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#define MODE1_REC_DEVICES (SOUND_MASK_LINE | SOUND_MASK_MIC | \
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SOUND_MASK_CD)
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#define MODE1_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_MIC | \
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SOUND_MASK_CD | \
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SOUND_MASK_IGAIN | \
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SOUND_MASK_PCM|SOUND_MASK_IMIX)
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#define MODE2_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_LINE | SOUND_MASK_MIC | \
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SOUND_MASK_CD | SOUND_MASK_SPEAKER | \
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SOUND_MASK_IGAIN | \
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SOUND_MASK_PCM | SOUND_MASK_IMIX)
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#else /* Generic mapping */
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#define MODE1_REC_DEVICES (SOUND_MASK_LINE3 | SOUND_MASK_MIC | \
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SOUND_MASK_LINE1)
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#define MODE1_MIXER_DEVICES (SOUND_MASK_LINE1 | SOUND_MASK_MIC | \
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SOUND_MASK_LINE2 | \
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SOUND_MASK_IGAIN | \
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SOUND_MASK_PCM | SOUND_MASK_IMIX)
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#define MODE2_MIXER_DEVICES (SOUND_MASK_LINE1 | SOUND_MASK_LINE2 | SOUND_MASK_MIC | \
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SOUND_MASK_LINE3 | SOUND_MASK_SPEAKER | \
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SOUND_MASK_IGAIN | \
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SOUND_MASK_PCM | SOUND_MASK_IMIX)
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#endif
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struct mixer_def {
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unsigned int regno: 7;
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unsigned int polarity:1; /* 0=normal, 1=reversed */
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unsigned int bitpos:4;
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unsigned int nbits:4;
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};
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typedef struct mixer_def mixer_ent;
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/*
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* Most of the mixer entries work in backwards. Setting the polarity field
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* makes them to work correctly.
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*
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* The channel numbering used by individual soundcards is not fixed. Some
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* cards have assigned different meanings for the AUX1, AUX2 and LINE inputs.
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* The current version doesn't try to compensate this.
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*/
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#define MIX_ENT(name, reg_l, pola_l, pos_l, len_l, reg_r, pola_r, pos_r, len_r) \
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{{reg_l, pola_l, pos_r, len_l}, {reg_r, pola_r, pos_r, len_r}}
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static mixer_ent mix_devices[32][2] = { /* As used in GUS MAX */
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MIX_ENT(SOUND_MIXER_VOLUME, 0, 0, 0, 0, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_BASS, 0, 0, 0, 0, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_TREBLE, 0, 0, 0, 0, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_SYNTH, 4, 1, 0, 5, 5, 1, 0, 5),
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MIX_ENT(SOUND_MIXER_PCM, 6, 1, 0, 6, 7, 1, 0, 6),
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MIX_ENT(SOUND_MIXER_SPEAKER, 26, 1, 0, 4, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_LINE, 18, 1, 0, 5, 19, 1, 0, 5),
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MIX_ENT(SOUND_MIXER_MIC, 0, 1, 5, 1, 1, 1, 5, 1),
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MIX_ENT(SOUND_MIXER_CD, 2, 1, 0, 5, 3, 1, 0, 5),
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MIX_ENT(SOUND_MIXER_IMIX, 13, 1, 2, 6, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_ALTPCM, 0, 0, 0, 0, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_RECLEV, 0, 0, 0, 0, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_IGAIN, 0, 0, 0, 4, 1, 0, 0, 4),
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MIX_ENT(SOUND_MIXER_OGAIN, 0, 0, 0, 0, 0, 0, 0, 0),
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MIX_ENT(SOUND_MIXER_LINE1, 2, 1, 0, 5, 3, 1, 0, 5),
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MIX_ENT(SOUND_MIXER_LINE2, 4, 1, 0, 5, 5, 1, 0, 5),
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MIX_ENT(SOUND_MIXER_LINE3, 18, 1, 0, 5, 19, 1, 0, 5)
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};
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static unsigned short default_mixer_levels[SOUND_MIXER_NRDEVICES] =
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{
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0x5a5a, /* Master Volume */
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0x3232, /* Bass */
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0x3232, /* Treble */
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0x4b4b, /* FM */
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0x6464, /* PCM */
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0x4b4b, /* PC Speaker */
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0x4b4b, /* Ext Line */
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0x1010, /* Mic */
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0x4b4b, /* CD */
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0x0000, /* Recording monitor */
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0x4b4b, /* SB PCM */
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0x4b4b, /* Recording level */
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0x4b4b, /* Input gain */
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0x4b4b, /* Output gain */
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0x4b4b, /* Line1 */
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0x4b4b, /* Line2 */
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0x4b4b /* Line3 */
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};
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#define LEFT_CHN 0
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#define RIGHT_CHN 1
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