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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/sound/oss/pas2_mixer.c

337 строки
8.2 KiB
C
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/*
* sound/pas2_mixer.c
*
* Mixer routines for the Pro Audio Spectrum cards.
*/
/*
* Copyright (C) by Hannu Savolainen 1993-1997
*
* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this software
* for more info.
*/
/*
* Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
* Bartlomiej Zolnierkiewicz : added __init to pas_init_mixer()
*/
#include <linux/init.h>
#include "sound_config.h"
#include "pas2.h"
#ifndef DEB
#define DEB(what) /* (what) */
#endif
extern int pas_translate_code;
extern char pas_model;
extern int *pas_osp;
extern int pas_audiodev;
static int rec_devices = (SOUND_MASK_MIC); /* Default recording source */
static int mode_control;
#define POSSIBLE_RECORDING_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
SOUND_MASK_CD | SOUND_MASK_ALTPCM)
#define SUPPORTED_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
SOUND_MASK_CD | SOUND_MASK_ALTPCM | SOUND_MASK_IMIX | \
SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_RECLEV)
static int *levels;
static int default_levels[32] =
{
0x3232, /* Master Volume */
0x3232, /* Bass */
0x3232, /* Treble */
0x5050, /* FM */
0x4b4b, /* PCM */
0x3232, /* PC Speaker */
0x4b4b, /* Ext Line */
0x4b4b, /* Mic */
0x4b4b, /* CD */
0x6464, /* Recording monitor */
0x4b4b, /* SB PCM */
0x6464 /* Recording level */
};
void
mix_write(unsigned char data, int ioaddr)
{
/*
* The Revision D cards have a problem with their MVA508 interface. The
* kludge-o-rama fix is to make a 16-bit quantity with identical LSB and
* MSBs out of the output byte and to do a 16-bit out to the mixer port -
* 1. We need to do this because it isn't timing problem but chip access
* sequence problem.
*/
if (pas_model == 4)
{
outw(data | (data << 8), (ioaddr + pas_translate_code) - 1);
outb((0x80), 0);
} else
pas_write(data, ioaddr);
}
static int
mixer_output(int right_vol, int left_vol, int div, int bits,
int mixer) /* Input or output mixer */
{
int left = left_vol * div / 100;
int right = right_vol * div / 100;
if (bits & 0x10)
{
left |= mixer;
right |= mixer;
}
if (bits == 0x03 || bits == 0x04)
{
mix_write(0x80 | bits, 0x078B);
mix_write(left, 0x078B);
right_vol = left_vol;
} else
{
mix_write(0x80 | 0x20 | bits, 0x078B);
mix_write(left, 0x078B);
mix_write(0x80 | 0x40 | bits, 0x078B);
mix_write(right, 0x078B);
}
return (left_vol | (right_vol << 8));
}
static void
set_mode(int new_mode)
{
mix_write(0x80 | 0x05, 0x078B);
mix_write(new_mode, 0x078B);
mode_control = new_mode;
}
static int
pas_mixer_set(int whichDev, unsigned int level)
{
int left, right, devmask, changed, i, mixer = 0;
DEB(printk("static int pas_mixer_set(int whichDev = %d, unsigned int level = %X)\n", whichDev, level));
left = level & 0x7f;
right = (level & 0x7f00) >> 8;
if (whichDev < SOUND_MIXER_NRDEVICES) {
if ((1 << whichDev) & rec_devices)
mixer = 0x20;
else
mixer = 0x00;
}
switch (whichDev)
{
case SOUND_MIXER_VOLUME: /* Master volume (0-63) */
levels[whichDev] = mixer_output(right, left, 63, 0x01, 0);
break;
/*
* Note! Bass and Treble are mono devices. Will use just the left
* channel.
*/
case SOUND_MIXER_BASS: /* Bass (0-12) */
levels[whichDev] = mixer_output(right, left, 12, 0x03, 0);
break;
case SOUND_MIXER_TREBLE: /* Treble (0-12) */
levels[whichDev] = mixer_output(right, left, 12, 0x04, 0);
break;
case SOUND_MIXER_SYNTH: /* Internal synthesizer (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x00, mixer);
break;
case SOUND_MIXER_PCM: /* PAS PCM (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x05, mixer);
break;
case SOUND_MIXER_ALTPCM: /* SB PCM (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x07, mixer);
break;
case SOUND_MIXER_SPEAKER: /* PC speaker (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x06, mixer);
break;
case SOUND_MIXER_LINE: /* External line (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x02, mixer);
break;
case SOUND_MIXER_CD: /* CD (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x03, mixer);
break;
case SOUND_MIXER_MIC: /* External microphone (0-31) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x04, mixer);
break;
case SOUND_MIXER_IMIX: /* Recording monitor (0-31) (Output mixer only) */
levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x01,
0x00);
break;
case SOUND_MIXER_RECLEV: /* Recording level (0-15) */
levels[whichDev] = mixer_output(right, left, 15, 0x02, 0);
break;
case SOUND_MIXER_RECSRC:
devmask = level & POSSIBLE_RECORDING_DEVICES;
changed = devmask ^ rec_devices;
rec_devices = devmask;
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
if (changed & (1 << i))
{
pas_mixer_set(i, levels[i]);
}
return rec_devices;
break;
default:
return -EINVAL;
}
return (levels[whichDev]);
}
/*****/
static void
pas_mixer_reset(void)
{
int foo;
DEB(printk("pas2_mixer.c: void pas_mixer_reset(void)\n"));
for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
pas_mixer_set(foo, levels[foo]);
set_mode(0x04 | 0x01);
}
static int pas_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
{
int level,v ;
int __user *p = (int __user *)arg;
DEB(printk("pas2_mixer.c: int pas_mixer_ioctl(unsigned int cmd = %X, unsigned int arg = %X)\n", cmd, arg));
if (cmd == SOUND_MIXER_PRIVATE1) { /* Set loudness bit */
if (get_user(level, p))
return -EFAULT;
if (level == -1) /* Return current settings */
level = (mode_control & 0x04);
else {
mode_control &= ~0x04;
if (level)
mode_control |= 0x04;
set_mode(mode_control);
}
level = !!level;
return put_user(level, p);
}
if (cmd == SOUND_MIXER_PRIVATE2) { /* Set enhance bit */
if (get_user(level, p))
return -EFAULT;
if (level == -1) { /* Return current settings */
if (!(mode_control & 0x03))
level = 0;
else
level = ((mode_control & 0x03) + 1) * 20;
} else {
int i = 0;
level &= 0x7f;
if (level)
i = (level / 20) - 1;
mode_control &= ~0x03;
mode_control |= i & 0x03;
set_mode(mode_control);
if (i)
i = (i + 1) * 20;
level = i;
}
return put_user(level, p);
}
if (cmd == SOUND_MIXER_PRIVATE3) { /* Set mute bit */
if (get_user(level, p))
return -EFAULT;
if (level == -1) /* Return current settings */
level = !(pas_read(0x0B8A) & 0x20);
else {
if (level)
pas_write(pas_read(0x0B8A) & (~0x20), 0x0B8A);
else
pas_write(pas_read(0x0B8A) | 0x20, 0x0B8A);
level = !(pas_read(0x0B8A) & 0x20);
}
return put_user(level, p);
}
if (((cmd >> 8) & 0xff) == 'M') {
if (get_user(v, p))
return -EFAULT;
if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
v = pas_mixer_set(cmd & 0xff, v);
} else {
switch (cmd & 0xff) {
case SOUND_MIXER_RECSRC:
v = rec_devices;
break;
case SOUND_MIXER_STEREODEVS:
v = SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE);
break;
case SOUND_MIXER_DEVMASK:
v = SUPPORTED_MIXER_DEVICES;
break;
case SOUND_MIXER_RECMASK:
v = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
break;
case SOUND_MIXER_CAPS:
v = 0; /* No special capabilities */
break;
default:
v = levels[cmd & 0xff];
break;
}
}
return put_user(v, p);
}
return -EINVAL;
}
static struct mixer_operations pas_mixer_operations =
{
.owner = THIS_MODULE,
.id = "PAS16",
.name = "Pro Audio Spectrum 16",
.ioctl = pas_mixer_ioctl
};
int __init
pas_init_mixer(void)
{
int d;
levels = load_mixer_volumes("PAS16_1", default_levels, 1);
pas_mixer_reset();
if ((d = sound_alloc_mixerdev()) != -1)
{
audio_devs[pas_audiodev]->mixer_dev = d;
mixer_devs[d] = &pas_mixer_operations;
}
return 1;
}
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