588 lines
13 KiB
C
588 lines
13 KiB
C
|
|
/*
|
|
* sound/sb_mixer.c
|
|
*
|
|
* The low level mixer driver for the SoundBlaster Pro and SB16 cards.
|
|
*
|
|
* Copyright by Hannu Savolainen 1994
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer. 2.
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* Modified:
|
|
* Hunyue Yau Jan 6 1994
|
|
* Added code to support the Sound Galaxy NX Pro mixer.
|
|
*
|
|
*/
|
|
|
|
#include <i386/isa/sound/sound_config.h>
|
|
|
|
#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_SB) && !defined(EXCLUDE_SBPRO)
|
|
#define __SB_MIXER_C__
|
|
|
|
#include <i386/isa/sound/sb_defs.h>
|
|
#include <i386/isa/sound/sb_mixer.h>
|
|
#undef SB_TEST_IRQ
|
|
|
|
extern int sbc_base;
|
|
extern int sbc_major;
|
|
extern int Jazz16_detected;
|
|
|
|
static int mixer_initialized = 0;
|
|
|
|
static int supported_rec_devices;
|
|
static int supported_devices;
|
|
static int recmask = 0;
|
|
static int mixer_model;
|
|
static int mixer_caps;
|
|
static mixer_tab *iomap;
|
|
|
|
void
|
|
sb_setmixer (unsigned int port, unsigned int value)
|
|
{
|
|
unsigned long flags;
|
|
|
|
DISABLE_INTR (flags);
|
|
OUTB ((unsigned char) (port & 0xff), MIXER_ADDR); /*
|
|
* Select register
|
|
*/
|
|
tenmicrosec ();
|
|
OUTB ((unsigned char) (value & 0xff), MIXER_DATA);
|
|
tenmicrosec ();
|
|
RESTORE_INTR (flags);
|
|
}
|
|
|
|
int
|
|
sb_getmixer (unsigned int port)
|
|
{
|
|
int val;
|
|
unsigned long flags;
|
|
|
|
DISABLE_INTR (flags);
|
|
OUTB ((unsigned char) (port & 0xff), MIXER_ADDR); /*
|
|
* Select register
|
|
*/
|
|
tenmicrosec ();
|
|
val = INB (MIXER_DATA);
|
|
tenmicrosec ();
|
|
RESTORE_INTR (flags);
|
|
|
|
return val;
|
|
}
|
|
|
|
void
|
|
sb_mixer_set_stereo (int mode)
|
|
{
|
|
if (!mixer_initialized)
|
|
return;
|
|
|
|
sb_setmixer (OUT_FILTER, ((sb_getmixer (OUT_FILTER) & ~STEREO_DAC)
|
|
| (mode ? STEREO_DAC : MONO_DAC)));
|
|
}
|
|
|
|
/*
|
|
* Returns:
|
|
* 0 No mixer detected.
|
|
* 1 Only a plain Sound Blaster Pro style mixer detected.
|
|
* 2 The Sound Galaxy NX Pro mixer detected.
|
|
*/
|
|
static int
|
|
detect_mixer (void)
|
|
{
|
|
#ifdef __SGNXPRO__
|
|
int oldbass, oldtreble;
|
|
|
|
#endif
|
|
int retcode = 1;
|
|
|
|
/*
|
|
* Detect the mixer by changing parameters of two volume channels. If the
|
|
* values read back match with the values written, the mixer is there (is
|
|
* it?)
|
|
*/
|
|
sb_setmixer (FM_VOL, 0xff);
|
|
sb_setmixer (VOC_VOL, 0x33);
|
|
|
|
if (sb_getmixer (FM_VOL) != 0xff)
|
|
return 0; /*
|
|
* No match
|
|
*/
|
|
if (sb_getmixer (VOC_VOL) != 0x33)
|
|
return 0;
|
|
|
|
#ifdef __SGNXPRO__
|
|
/* Attempt to detect the SG NX Pro by check for valid bass/treble
|
|
* registers.
|
|
*/
|
|
oldbass = sb_getmixer (BASS_LVL);
|
|
oldtreble = sb_getmixer (TREBLE_LVL);
|
|
|
|
sb_setmixer (BASS_LVL, 0xaa);
|
|
sb_setmixer (TREBLE_LVL, 0x55);
|
|
|
|
if ((sb_getmixer (BASS_LVL) != 0xaa) ||
|
|
(sb_getmixer (TREBLE_LVL) != 0x55))
|
|
{
|
|
retcode = 1; /* 1 == Only SB Pro detected */
|
|
}
|
|
else
|
|
retcode = 2; /* 2 == SG NX Pro detected */
|
|
/* Restore register in either case since SG NX Pro has EEPROM with
|
|
* 'preferred' values stored.
|
|
*/
|
|
sb_setmixer (BASS_LVL, oldbass);
|
|
sb_setmixer (TREBLE_LVL, oldtreble);
|
|
|
|
/*
|
|
* If the SB version is 3.X (SB Pro), assume we have a SG NX Pro 16.
|
|
* In this case it's good idea to disable the Disney Sound Source
|
|
* compatibility mode. It's useless and just causes noise every time the
|
|
* LPT-port is accessed.
|
|
*
|
|
* Also place the card into WSS mode.
|
|
*/
|
|
if (sbc_major == 3)
|
|
{
|
|
OUTB (0x01, sbc_base + 0x1c);
|
|
OUTB (0x00, sbc_base + 0x1a);
|
|
}
|
|
|
|
#endif
|
|
return retcode;
|
|
}
|
|
|
|
static void
|
|
change_bits (unsigned char *regval, int dev, int chn, int newval)
|
|
{
|
|
unsigned char mask;
|
|
int shift;
|
|
|
|
mask = (1 << (*iomap)[dev][chn].nbits) - 1;
|
|
newval = (int) ((newval * mask) + 50) / 100; /*
|
|
* Scale it
|
|
*/
|
|
|
|
shift = (*iomap)[dev][chn].bitoffs - (*iomap)[dev][LEFT_CHN].nbits + 1;
|
|
|
|
*regval &= ~(mask << shift); /*
|
|
* Filter out the previous value
|
|
*/
|
|
*regval |= (newval & mask) << shift; /*
|
|
* Set the new value
|
|
*/
|
|
}
|
|
|
|
static int
|
|
sb_mixer_get (int dev)
|
|
{
|
|
if (!((1 << dev) & supported_devices))
|
|
return RET_ERROR (EINVAL);
|
|
|
|
return levels[dev];
|
|
}
|
|
|
|
#ifdef JAZZ16
|
|
static char smw_mix_regs[] = /* Left mixer registers */
|
|
{
|
|
0x0b, /* SOUND_MIXER_VOLUME */
|
|
0x0d, /* SOUND_MIXER_BASS */
|
|
0x0d, /* SOUND_MIXER_TREBLE */
|
|
0x05, /* SOUND_MIXER_SYNTH */
|
|
0x09, /* SOUND_MIXER_PCM */
|
|
0x00, /* SOUND_MIXER_SPEAKER */
|
|
0x03, /* SOUND_MIXER_LINE */
|
|
0x01, /* SOUND_MIXER_MIC */
|
|
0x07, /* SOUND_MIXER_CD */
|
|
0x00, /* SOUND_MIXER_IMIX */
|
|
0x00, /* SOUND_MIXER_ALTPCM */
|
|
0x00, /* SOUND_MIXER_RECLEV */
|
|
0x00, /* SOUND_MIXER_IGAIN */
|
|
0x00, /* SOUND_MIXER_OGAIN */
|
|
0x00, /* SOUND_MIXER_LINE1 */
|
|
0x00, /* SOUND_MIXER_LINE2 */
|
|
0x00 /* SOUND_MIXER_LINE3 */
|
|
};
|
|
|
|
static void
|
|
smw_mixer_init (void)
|
|
{
|
|
int i;
|
|
|
|
sb_setmixer (0x00, 0x18); /* Mute unused (Telephone) line */
|
|
sb_setmixer (0x10, 0x38); /* Config register 2 */
|
|
|
|
supported_devices = 0;
|
|
for (i = 0; i < sizeof (smw_mix_regs); i++)
|
|
if (smw_mix_regs[i] != 0)
|
|
supported_devices |= (1 << i);
|
|
|
|
supported_rec_devices = supported_devices &
|
|
~(SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_PCM |
|
|
SOUND_MASK_VOLUME);
|
|
}
|
|
|
|
static int
|
|
smw_mixer_set (int dev, int value)
|
|
{
|
|
int left = value & 0x000000ff;
|
|
int right = (value & 0x0000ff00) >> 8;
|
|
int reg, val;
|
|
|
|
if (left > 100)
|
|
left = 100;
|
|
if (right > 100)
|
|
right = 100;
|
|
|
|
if (dev > 31)
|
|
return RET_ERROR (EINVAL);
|
|
|
|
if (!(supported_devices & (1 << dev))) /* Not supported */
|
|
return RET_ERROR (EINVAL);
|
|
|
|
switch (dev)
|
|
{
|
|
case SOUND_MIXER_VOLUME:
|
|
sb_setmixer (0x0b, 96 - (96 * left / 100)); /* 96=mute, 0=max */
|
|
sb_setmixer (0x0c, 96 - (96 * right / 100));
|
|
break;
|
|
|
|
case SOUND_MIXER_BASS:
|
|
case SOUND_MIXER_TREBLE:
|
|
levels[dev] = left | (right << 8);
|
|
|
|
/* Set left bass and treble values */
|
|
val = ((levels[SOUND_MIXER_TREBLE] & 0xff) * 16 / 100) << 4;
|
|
val |= ((levels[SOUND_MIXER_BASS] & 0xff) * 16 / 100) & 0x0f;
|
|
sb_setmixer (0x0d, val);
|
|
|
|
/* Set right bass and treble values */
|
|
val = (((levels[SOUND_MIXER_TREBLE] >> 8) & 0xff) * 16 / 100) << 4;
|
|
val |= (((levels[SOUND_MIXER_BASS] >> 8) & 0xff) * 16 / 100) & 0x0f;
|
|
sb_setmixer (0x0e, val);
|
|
break;
|
|
|
|
default:
|
|
reg = smw_mix_regs[dev];
|
|
if (reg == 0)
|
|
return RET_ERROR (EINVAL);
|
|
sb_setmixer (reg, (24 - (24 * left / 100)) | 0x20); /* 24=mute, 0=max */
|
|
sb_setmixer (reg + 1, (24 - (24 * right / 100)) | 0x40);
|
|
}
|
|
|
|
levels[dev] = left | (right << 8);
|
|
return left | (right << 8);
|
|
}
|
|
|
|
#endif
|
|
|
|
static int
|
|
sb_mixer_set (int dev, int value)
|
|
{
|
|
int left = value & 0x000000ff;
|
|
int right = (value & 0x0000ff00) >> 8;
|
|
|
|
int regoffs;
|
|
unsigned char val;
|
|
|
|
#ifdef JAZZ16
|
|
if (Jazz16_detected == 2)
|
|
return smw_mixer_set (dev, value);
|
|
#endif
|
|
|
|
if (left > 100)
|
|
left = 100;
|
|
if (right > 100)
|
|
right = 100;
|
|
|
|
if (dev > 31)
|
|
return RET_ERROR (EINVAL);
|
|
|
|
if (!(supported_devices & (1 << dev))) /*
|
|
* Not supported
|
|
*/
|
|
return RET_ERROR (EINVAL);
|
|
|
|
regoffs = (*iomap)[dev][LEFT_CHN].regno;
|
|
|
|
if (regoffs == 0)
|
|
return RET_ERROR (EINVAL);
|
|
|
|
val = sb_getmixer (regoffs);
|
|
change_bits (&val, dev, LEFT_CHN, left);
|
|
|
|
levels[dev] = left | (left << 8);
|
|
|
|
if ((*iomap)[dev][RIGHT_CHN].regno != regoffs) /*
|
|
* Change register
|
|
*/
|
|
{
|
|
sb_setmixer (regoffs, val); /*
|
|
* Save the old one
|
|
*/
|
|
regoffs = (*iomap)[dev][RIGHT_CHN].regno;
|
|
|
|
if (regoffs == 0)
|
|
return left | (left << 8); /*
|
|
* Just left channel present
|
|
*/
|
|
|
|
val = sb_getmixer (regoffs); /*
|
|
* Read the new one
|
|
*/
|
|
}
|
|
|
|
change_bits (&val, dev, RIGHT_CHN, right);
|
|
|
|
sb_setmixer (regoffs, val);
|
|
|
|
levels[dev] = left | (right << 8);
|
|
return left | (right << 8);
|
|
}
|
|
|
|
static void
|
|
set_recsrc (int src)
|
|
{
|
|
sb_setmixer (RECORD_SRC, (sb_getmixer (RECORD_SRC) & ~7) | (src & 0x7));
|
|
}
|
|
|
|
static int
|
|
set_recmask (int mask)
|
|
{
|
|
int devmask, i;
|
|
unsigned char regimageL, regimageR;
|
|
|
|
devmask = mask & supported_rec_devices;
|
|
|
|
switch (mixer_model)
|
|
{
|
|
case 3:
|
|
|
|
if (devmask != SOUND_MASK_MIC &&
|
|
devmask != SOUND_MASK_LINE &&
|
|
devmask != SOUND_MASK_CD)
|
|
{ /*
|
|
* More than one devices selected. Drop the *
|
|
* previous selection
|
|
*/
|
|
devmask &= ~recmask;
|
|
}
|
|
|
|
if (devmask != SOUND_MASK_MIC &&
|
|
devmask != SOUND_MASK_LINE &&
|
|
devmask != SOUND_MASK_CD)
|
|
{ /*
|
|
* More than one devices selected. Default to
|
|
* * mic
|
|
*/
|
|
devmask = SOUND_MASK_MIC;
|
|
}
|
|
|
|
|
|
if (devmask ^ recmask) /*
|
|
* Input source changed
|
|
*/
|
|
{
|
|
switch (devmask)
|
|
{
|
|
|
|
case SOUND_MASK_MIC:
|
|
set_recsrc (SRC_MIC);
|
|
break;
|
|
|
|
case SOUND_MASK_LINE:
|
|
set_recsrc (SRC_LINE);
|
|
break;
|
|
|
|
case SOUND_MASK_CD:
|
|
set_recsrc (SRC_CD);
|
|
break;
|
|
|
|
default:
|
|
set_recsrc (SRC_MIC);
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
case 4:
|
|
if (!devmask)
|
|
devmask = SOUND_MASK_MIC;
|
|
|
|
regimageL = regimageR = 0;
|
|
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
|
|
if ((1 << i) & devmask)
|
|
{
|
|
regimageL |= sb16_recmasks_L[i];
|
|
regimageR |= sb16_recmasks_R[i];
|
|
}
|
|
sb_setmixer (SB16_IMASK_L, regimageL);
|
|
sb_setmixer (SB16_IMASK_R, regimageR);
|
|
break;
|
|
}
|
|
|
|
recmask = devmask;
|
|
return recmask;
|
|
}
|
|
|
|
static int
|
|
sb_mixer_ioctl (int dev, unsigned int cmd, unsigned int arg)
|
|
{
|
|
if (((cmd >> 8) & 0xff) == 'M')
|
|
{
|
|
if (cmd & IOC_IN)
|
|
switch (cmd & 0xff)
|
|
{
|
|
case SOUND_MIXER_RECSRC:
|
|
return IOCTL_OUT (arg, set_recmask (IOCTL_IN (arg)));
|
|
break;
|
|
|
|
default:
|
|
|
|
return IOCTL_OUT (arg, sb_mixer_set (cmd & 0xff, IOCTL_IN (arg)));
|
|
}
|
|
else
|
|
switch (cmd & 0xff) /*
|
|
* Return parameters
|
|
*/
|
|
{
|
|
|
|
case SOUND_MIXER_RECSRC:
|
|
return IOCTL_OUT (arg, recmask);
|
|
break;
|
|
|
|
case SOUND_MIXER_DEVMASK:
|
|
return IOCTL_OUT (arg, supported_devices);
|
|
break;
|
|
|
|
case SOUND_MIXER_STEREODEVS:
|
|
if (Jazz16_detected)
|
|
return IOCTL_OUT (arg, supported_devices);
|
|
else
|
|
return IOCTL_OUT (arg, supported_devices &
|
|
~(SOUND_MASK_MIC | SOUND_MASK_SPEAKER));
|
|
break;
|
|
|
|
case SOUND_MIXER_RECMASK:
|
|
return IOCTL_OUT (arg, supported_rec_devices);
|
|
break;
|
|
|
|
case SOUND_MIXER_CAPS:
|
|
return IOCTL_OUT (arg, mixer_caps);
|
|
break;
|
|
|
|
default:
|
|
return IOCTL_OUT (arg, sb_mixer_get (cmd & 0xff));
|
|
}
|
|
}
|
|
else
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
|
|
static struct mixer_operations sb_mixer_operations =
|
|
{
|
|
"SoundBlaster",
|
|
sb_mixer_ioctl
|
|
};
|
|
|
|
static void
|
|
sb_mixer_reset (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
|
|
sb_mixer_set (i, levels[i]);
|
|
set_recmask (SOUND_MASK_MIC);
|
|
}
|
|
|
|
/*
|
|
* Returns a code depending on whether a SG NX Pro was detected.
|
|
* 1 == Plain SB Pro
|
|
* 2 == SG NX Pro detected.
|
|
* 3 == SB16
|
|
*
|
|
* Used to update message.
|
|
*/
|
|
int
|
|
sb_mixer_init (int major_model)
|
|
{
|
|
int mixer_type = 0;
|
|
|
|
sb_setmixer (0x00, 0); /* Reset mixer */
|
|
|
|
if (!(mixer_type = detect_mixer ()))
|
|
return 0; /* No mixer. Why? */
|
|
|
|
mixer_initialized = 1;
|
|
mixer_model = major_model;
|
|
|
|
switch (major_model)
|
|
{
|
|
case 3:
|
|
mixer_caps = SOUND_CAP_EXCL_INPUT;
|
|
|
|
#ifdef JAZZ16
|
|
if (Jazz16_detected == 2) /* SM Wave */
|
|
{
|
|
supported_devices = 0;
|
|
supported_rec_devices = 0;
|
|
iomap = &sbpro_mix;
|
|
smw_mixer_init ();
|
|
mixer_type = 1;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef __SGNXPRO__
|
|
if (mixer_type == 2) /* A SGNXPRO was detected */
|
|
{
|
|
supported_devices = SGNXPRO_MIXER_DEVICES;
|
|
supported_rec_devices = SGNXPRO_RECORDING_DEVICES;
|
|
iomap = &sgnxpro_mix;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
supported_devices = SBPRO_MIXER_DEVICES;
|
|
supported_rec_devices = SBPRO_RECORDING_DEVICES;
|
|
iomap = &sbpro_mix;
|
|
mixer_type = 1;
|
|
}
|
|
break;
|
|
|
|
case 4:
|
|
mixer_caps = 0;
|
|
supported_devices = SB16_MIXER_DEVICES;
|
|
supported_rec_devices = SB16_RECORDING_DEVICES;
|
|
iomap = &sb16_mix;
|
|
mixer_type = 3;
|
|
break;
|
|
|
|
default:
|
|
printk ("SB Warning: Unsupported mixer type\n");
|
|
return 0;
|
|
}
|
|
|
|
if (num_mixers < MAX_MIXER_DEV)
|
|
mixer_devs[num_mixers++] = &sb_mixer_operations;
|
|
sb_mixer_reset ();
|
|
return mixer_type;
|
|
}
|
|
|
|
#endif
|