328 lines
7.8 KiB
C
328 lines
7.8 KiB
C
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/*
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* sound/oss/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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/*
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* Copyright (C) by Hannu Savolainen 1993-1997
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*
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* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
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* Version 2 (June 1991). See the "COPYING" file distributed with this software
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* for more info.
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*/
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/*
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* Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
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* Bartlomiej Zolnierkiewicz : added __init to pas_init_mixer()
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*/
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#include <linux/init.h>
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#include "sound_config.h"
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#include "pas2.h"
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extern int pas_translate_code;
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extern char pas_model;
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extern int *pas_osp;
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extern int pas_audiodev;
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static int rec_devices = (SOUND_MASK_MIC); /* Default recording source */
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static int mode_control;
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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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static int *levels;
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static int default_levels[32] =
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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(unsigned 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. The
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* kludge-o-rama fix is to make a 16-bit quantity with identical LSB and
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* MSBs out of the output byte and to do a 16-bit out to the mixer port -
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* 1. We need to do this because it isn't timing problem but chip access
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* sequence problem.
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*/
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if (pas_model == 4)
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{
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outw(data | (data << 8), (ioaddr + pas_translate_code) - 1);
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outb((0x80), 0);
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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) /* Input or output mixer */
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{
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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 & 0x10)
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{
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left |= mixer;
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right |= mixer;
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}
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if (bits == 0x03 || bits == 0x04)
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{
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mix_write(0x80 | bits, 0x078B);
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mix_write(left, 0x078B);
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right_vol = left_vol;
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} else
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{
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mix_write(0x80 | 0x20 | bits, 0x078B);
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mix_write(left, 0x078B);
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mix_write(0x80 | 0x40 | bits, 0x078B);
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mix_write(right, 0x078B);
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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(0x80 | 0x05, 0x078B);
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mix_write(new_mode, 0x078B);
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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, unsigned int level)
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{
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int left, right, devmask, changed, i, mixer = 0;
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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 = 0x20;
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else
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mixer = 0x00;
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}
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switch (whichDev)
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{
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case SOUND_MIXER_VOLUME: /* Master volume (0-63) */
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levels[whichDev] = mixer_output(right, left, 63, 0x01, 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 left
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* 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, 0x03, 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, 0x04, 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, 0x10 | 0x00, 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, 0x10 | 0x05, 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, 0x10 | 0x07, 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, 0x10 | 0x06, 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, 0x10 | 0x02, 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, 0x10 | 0x03, 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, 0x10 | 0x04, mixer);
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break;
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case SOUND_MIXER_IMIX: /* Recording monitor (0-31) (Output mixer only) */
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levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x01,
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0x00);
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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, 0x02, 0);
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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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{
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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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for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
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pas_mixer_set(foo, levels[foo]);
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set_mode(0x04 | 0x01);
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}
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static int pas_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
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{
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int level,v ;
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int __user *p = (int __user *)arg;
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if (cmd == SOUND_MIXER_PRIVATE1) { /* Set loudness bit */
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if (get_user(level, p))
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return -EFAULT;
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if (level == -1) /* Return current settings */
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level = (mode_control & 0x04);
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else {
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mode_control &= ~0x04;
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if (level)
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mode_control |= 0x04;
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set_mode(mode_control);
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}
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level = !!level;
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return put_user(level, p);
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}
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if (cmd == SOUND_MIXER_PRIVATE2) { /* Set enhance bit */
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if (get_user(level, p))
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return -EFAULT;
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if (level == -1) { /* Return current settings */
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if (!(mode_control & 0x03))
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level = 0;
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else
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level = ((mode_control & 0x03) + 1) * 20;
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} else {
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int 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 &= ~0x03;
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mode_control |= i & 0x03;
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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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level = i;
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}
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return put_user(level, p);
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}
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if (cmd == SOUND_MIXER_PRIVATE3) { /* Set mute bit */
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if (get_user(level, p))
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return -EFAULT;
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if (level == -1) /* Return current settings */
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level = !(pas_read(0x0B8A) & 0x20);
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else {
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if (level)
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pas_write(pas_read(0x0B8A) & (~0x20), 0x0B8A);
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else
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pas_write(pas_read(0x0B8A) | 0x20, 0x0B8A);
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level = !(pas_read(0x0B8A) & 0x20);
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}
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return put_user(level, p);
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}
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if (((cmd >> 8) & 0xff) == 'M') {
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if (get_user(v, p))
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return -EFAULT;
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if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
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v = pas_mixer_set(cmd & 0xff, v);
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} else {
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switch (cmd & 0xff) {
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case SOUND_MIXER_RECSRC:
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v = rec_devices;
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break;
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case SOUND_MIXER_STEREODEVS:
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v = 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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v = SUPPORTED_MIXER_DEVICES;
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break;
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case SOUND_MIXER_RECMASK:
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v = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
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break;
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case SOUND_MIXER_CAPS:
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v = 0; /* No special capabilities */
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break;
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default:
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v = levels[cmd & 0xff];
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break;
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}
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}
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return put_user(v, p);
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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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.owner = THIS_MODULE,
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.id = "PAS16",
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.name = "Pro Audio Spectrum 16",
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.ioctl = pas_mixer_ioctl
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};
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int __init
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pas_init_mixer(void)
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{
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int d;
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levels = load_mixer_volumes("PAS16_1", default_levels, 1);
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pas_mixer_reset();
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if ((d = sound_alloc_mixerdev()) != -1)
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{
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audio_devs[pas_audiodev]->mixer_dev = d;
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mixer_devs[d] = &pas_mixer_operations;
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}
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return 1;
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}
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