323 lines
9.0 KiB
C
323 lines
9.0 KiB
C
/*
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* sound/pas2_mixer.c
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*
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* Mixer routines for the Pro Audio Spectrum cards.
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*
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* Copyright by Hannu Savolainen 1993
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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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#define _PAS2_MIXER_C_
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#include <i386/isa/sound/sound_config.h>
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#if defined(CONFIG_PAS)
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#include <i386/isa/sound/pas_hw.h>
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#define TRACE(what) /* (what) */
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extern int translat_code;
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extern char pas_model;
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extern sound_os_info *pas_osp;
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static int rec_devices = (SOUND_MASK_MIC); /* Default recording source */
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static int mode_control = 0;
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#define POSSIBLE_RECORDING_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
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SOUND_MASK_CD | SOUND_MASK_ALTPCM)
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#define SUPPORTED_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
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SOUND_MASK_CD | SOUND_MASK_ALTPCM | SOUND_MASK_IMIX | \
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SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_RECLEV | \
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SOUND_MASK_MUTE | SOUND_MASK_ENHANCE | SOUND_MASK_LOUD)
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static u_short levels[SOUND_MIXER_NRDEVICES] =
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{
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0x3232, /* Master Volume */
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0x3232, /* Bass */
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0x3232, /* Treble */
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0x5050, /* FM */
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0x4b4b, /* PCM */
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0x3232, /* PC Speaker */
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0x4b4b, /* Ext Line */
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0x4b4b, /* Mic */
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0x4b4b, /* CD */
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0x6464, /* Recording monitor */
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0x4b4b, /* SB PCM */
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0x6464 /* Recording level */
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};
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void
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mix_write(u_char data, int ioaddr)
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{
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/*
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* The Revision D cards have a problem with their MVA508 interface.
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* The kludge-o-rama fix is to make a 16-bit quantity with identical
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* LSB and MSBs out of the output byte and to do a 16-bit out to the
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* mixer port - 1. We need to do this because it isn't timing problem
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* but chip access sequence problem.
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*/
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if (pas_model == PAS_16D) {
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outw((ioaddr ^ translat_code) - 1, data | (data << 8));
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outb(0, 0x80);
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} else
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pas_write(data, ioaddr);
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}
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static int
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mixer_output(int right_vol, int left_vol, int div, int bits,
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int mixer)
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{ /* Input or output mixer */
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int left = left_vol * div / 100;
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int right = right_vol * div / 100;
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if (bits & P_M_MV508_MIXER) { /* Select input or output mixer */
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left |= mixer;
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right |= mixer;
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}
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if (bits == P_M_MV508_BASS || bits == P_M_MV508_TREBLE) { /* Bass and treble are
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* mono devices */
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mix_write(P_M_MV508_ADDRESS | bits, PARALLEL_MIXER);
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mix_write(left, PARALLEL_MIXER);
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right_vol = left_vol;
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} else {
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mix_write(P_M_MV508_ADDRESS | P_M_MV508_LEFT | bits, PARALLEL_MIXER);
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mix_write(left, PARALLEL_MIXER);
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mix_write(P_M_MV508_ADDRESS | P_M_MV508_RIGHT | bits, PARALLEL_MIXER);
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mix_write(right, PARALLEL_MIXER);
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}
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return (left_vol | (right_vol << 8));
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}
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static void
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set_mode(int new_mode)
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{
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mix_write(P_M_MV508_ADDRESS | P_M_MV508_MODE, PARALLEL_MIXER);
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mix_write(new_mode, PARALLEL_MIXER);
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mode_control = new_mode;
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}
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static int
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pas_mixer_set(int whichDev, u_int level)
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{
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int left, right, devmask, changed, i, mixer = 0;
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TRACE(printf("static int pas_mixer_set(int whichDev = %d, u_int level = %X)\n", whichDev, level));
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left = level & 0x7f;
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right = (level & 0x7f00) >> 8;
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if (whichDev < SOUND_MIXER_NRDEVICES)
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if ((1 << whichDev) & rec_devices)
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mixer = P_M_MV508_INPUTMIX;
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else
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mixer = P_M_MV508_OUTPUTMIX;
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switch (whichDev) {
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case SOUND_MIXER_VOLUME: /* Master volume (0-63) */
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levels[whichDev] = mixer_output(right, left, 63, P_M_MV508_MASTER_A, 0);
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break;
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/*
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* Note! Bass and Treble are mono devices. Will use just the
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* left channel.
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*/
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case SOUND_MIXER_BASS: /* Bass (0-12) */
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levels[whichDev] = mixer_output(right, left, 12, P_M_MV508_BASS, 0);
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break;
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case SOUND_MIXER_TREBLE: /* Treble (0-12) */
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levels[whichDev] = mixer_output(right, left, 12, P_M_MV508_TREBLE, 0);
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break;
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case SOUND_MIXER_SYNTH:/* Internal synthesizer (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_FM, mixer);
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break;
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case SOUND_MIXER_PCM: /* PAS PCM (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_PCM, mixer);
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break;
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case SOUND_MIXER_ALTPCM: /* SB PCM (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_SB, mixer);
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break;
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case SOUND_MIXER_SPEAKER: /* PC speaker (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_SPEAKER, mixer);
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break;
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case SOUND_MIXER_LINE: /* External line (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_LINE, mixer);
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break;
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case SOUND_MIXER_CD: /* CD (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_CDROM, mixer);
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break;
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case SOUND_MIXER_MIC: /* External microphone (0-31) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_MIC, mixer);
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break;
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case SOUND_MIXER_IMIX: /* Recording monitor (0-31) (Output mixer
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* only) */
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levels[whichDev] = mixer_output(right, left, 31, P_M_MV508_MIXER | P_M_MV508_IMIXER,
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P_M_MV508_OUTPUTMIX);
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break;
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case SOUND_MIXER_RECLEV: /* Recording level (0-15) */
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levels[whichDev] = mixer_output(right, left, 15, P_M_MV508_MASTER_B, 0);
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break;
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case SOUND_MIXER_MUTE:
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return 0;
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break;
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case SOUND_MIXER_ENHANCE:
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i = 0;
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level &= 0x7f;
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if (level)
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i = (level / 20) - 1;
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mode_control &= ~P_M_MV508_ENHANCE_BITS;
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mode_control |= P_M_MV508_ENHANCE_BITS;
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set_mode(mode_control);
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if (i)
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i = (i + 1) * 20;
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return i;
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break;
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case SOUND_MIXER_LOUD:
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mode_control &= ~P_M_MV508_LOUDNESS;
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if (level)
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mode_control |= P_M_MV508_LOUDNESS;
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set_mode(mode_control);
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return !!level; /* 0 or 1 */
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break;
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case SOUND_MIXER_RECSRC:
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devmask = level & POSSIBLE_RECORDING_DEVICES;
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changed = devmask ^ rec_devices;
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rec_devices = devmask;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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if (changed & (1 << i)) {
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pas_mixer_set(i, levels[i]);
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}
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return rec_devices;
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break;
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default:
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return -(EINVAL);
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}
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return (levels[whichDev]);
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}
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/*****/
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static void
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pas_mixer_reset(void)
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{
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int foo;
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TRACE(printf("pas2_mixer.c: void pas_mixer_reset(void)\n"));
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for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
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pas_mixer_set(foo, levels[foo]);
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set_mode(P_M_MV508_LOUDNESS | P_M_MV508_ENHANCE_40);
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}
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static int
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pas_mixer_ioctl(int dev, u_int cmd, ioctl_arg arg)
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{
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TRACE(printf("pas2_mixer.c: int pas_mixer_ioctl(u_int cmd = %X, u_int arg = %X)\n", cmd, arg));
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if (((cmd >> 8) & 0xff) == 'M') {
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if (cmd & IOC_IN)
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return *(int *) arg = pas_mixer_set(cmd & 0xff, (*(int *) arg));
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else { /* Read parameters */
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switch (cmd & 0xff) {
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case SOUND_MIXER_RECSRC:
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return *(int *) arg = rec_devices;
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break;
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case SOUND_MIXER_STEREODEVS:
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return *(int *) arg = SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE);
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break;
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case SOUND_MIXER_DEVMASK:
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return *(int *) arg = SUPPORTED_MIXER_DEVICES;
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break;
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case SOUND_MIXER_RECMASK:
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return *(int *) arg = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
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break;
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case SOUND_MIXER_CAPS:
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return *(int *) arg = 0; /* No special
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* capabilities */
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break;
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case SOUND_MIXER_MUTE:
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return *(int *) arg = 0; /* No mute yet */
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break;
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case SOUND_MIXER_ENHANCE:
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if (!(mode_control & P_M_MV508_ENHANCE_BITS))
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return *(int *) arg = 0;
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return *(int *) arg = ((mode_control & P_M_MV508_ENHANCE_BITS) + 1) * 20;
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break;
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case SOUND_MIXER_LOUD:
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if (mode_control & P_M_MV508_LOUDNESS)
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return *(int *) arg = 1;
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return *(int *) arg = 0;
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break;
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default:
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return *(int *) arg = levels[cmd & 0xff];
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}
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}
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}
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return -(EINVAL);
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}
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static struct mixer_operations pas_mixer_operations =
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{
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"Pro Audio Spectrum 16",
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pas_mixer_ioctl
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};
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int
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pas_init_mixer(void)
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{
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pas_mixer_reset();
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if (num_mixers < MAX_MIXER_DEV)
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mixer_devs[num_mixers++] = &pas_mixer_operations;
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return 1;
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}
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#endif
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