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tmp_suning_uos_patched/sound/oss/sb_mixer.c
Eugene Teo fe9bab2df9 [PATCH] Fix sb_mixer use before validation 
dev should be validated before it is being used as index to array.

Coverity bug #871

Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 08:22:59 -08:00

769 lines
19 KiB
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/*
* sound/sb_mixer.c
*
* The low level mixer driver for the Sound Blaster compatible 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)
* Rolf Fokkens (Dec 20 1998) : Moved ESS stuff into sb_ess.[ch]
* Stanislav Voronyi <stas@esc.kharkov.com> : Support for AWE 3DSE device (Jun 7 1999)
*/
#include "sound_config.h"
#define __SB_MIXER_C__
#include "sb.h"
#include "sb_mixer.h"
#include "sb_ess.h"
#define SBPRO_RECORDING_DEVICES (SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD)
/* Same as SB Pro, unless I find otherwise */
#define SGNXPRO_RECORDING_DEVICES SBPRO_RECORDING_DEVICES
#define SBPRO_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE | SOUND_MASK_MIC | \
SOUND_MASK_CD | SOUND_MASK_VOLUME)
/* SG NX Pro has treble and bass settings on the mixer. The 'speaker'
* channel is the COVOX/DisneySoundSource emulation volume control
* on the mixer. It does NOT control speaker volume. Should have own
* mask eventually?
*/
#define SGNXPRO_MIXER_DEVICES (SBPRO_MIXER_DEVICES|SOUND_MASK_BASS| \
SOUND_MASK_TREBLE|SOUND_MASK_SPEAKER )
#define SB16_RECORDING_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_LINE | SOUND_MASK_MIC | \
SOUND_MASK_CD)
#define SB16_OUTFILTER_DEVICES (SOUND_MASK_LINE | SOUND_MASK_MIC | \
SOUND_MASK_CD)
#define SB16_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
SOUND_MASK_CD | \
SOUND_MASK_IGAIN | SOUND_MASK_OGAIN | \
SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | \
SOUND_MASK_IMIX)
/* These are the only devices that are working at the moment. Others could
* be added once they are identified and a method is found to control them.
*/
#define ALS007_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_LINE | \
SOUND_MASK_PCM | SOUND_MASK_MIC | \
SOUND_MASK_CD | \
SOUND_MASK_VOLUME)
static mixer_tab sbpro_mix = {
MIX_ENT(SOUND_MIXER_VOLUME, 0x22, 7, 4, 0x22, 3, 4),
MIX_ENT(SOUND_MIXER_BASS, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_TREBLE, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_SYNTH, 0x26, 7, 4, 0x26, 3, 4),
MIX_ENT(SOUND_MIXER_PCM, 0x04, 7, 4, 0x04, 3, 4),
MIX_ENT(SOUND_MIXER_SPEAKER, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_LINE, 0x2e, 7, 4, 0x2e, 3, 4),
MIX_ENT(SOUND_MIXER_MIC, 0x0a, 2, 3, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_CD, 0x28, 7, 4, 0x28, 3, 4),
MIX_ENT(SOUND_MIXER_IMIX, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV, 0x00, 0, 0, 0x00, 0, 0)
};
static mixer_tab sb16_mix = {
MIX_ENT(SOUND_MIXER_VOLUME, 0x30, 7, 5, 0x31, 7, 5),
MIX_ENT(SOUND_MIXER_BASS, 0x46, 7, 4, 0x47, 7, 4),
MIX_ENT(SOUND_MIXER_TREBLE, 0x44, 7, 4, 0x45, 7, 4),
MIX_ENT(SOUND_MIXER_SYNTH, 0x34, 7, 5, 0x35, 7, 5),
MIX_ENT(SOUND_MIXER_PCM, 0x32, 7, 5, 0x33, 7, 5),
MIX_ENT(SOUND_MIXER_SPEAKER, 0x3b, 7, 2, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_LINE, 0x38, 7, 5, 0x39, 7, 5),
MIX_ENT(SOUND_MIXER_MIC, 0x3a, 7, 5, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_CD, 0x36, 7, 5, 0x37, 7, 5),
MIX_ENT(SOUND_MIXER_IMIX, 0x3c, 0, 1, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV, 0x3f, 7, 2, 0x40, 7, 2), /* Obsolete. Use IGAIN */
MIX_ENT(SOUND_MIXER_IGAIN, 0x3f, 7, 2, 0x40, 7, 2),
MIX_ENT(SOUND_MIXER_OGAIN, 0x41, 7, 2, 0x42, 7, 2)
};
static mixer_tab als007_mix =
{
MIX_ENT(SOUND_MIXER_VOLUME, 0x62, 7, 4, 0x62, 3, 4),
MIX_ENT(SOUND_MIXER_BASS, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_TREBLE, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_SYNTH, 0x66, 7, 4, 0x66, 3, 4),
MIX_ENT(SOUND_MIXER_PCM, 0x64, 7, 4, 0x64, 3, 4),
MIX_ENT(SOUND_MIXER_SPEAKER, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_LINE, 0x6e, 7, 4, 0x6e, 3, 4),
MIX_ENT(SOUND_MIXER_MIC, 0x6a, 2, 3, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_CD, 0x68, 7, 4, 0x68, 3, 4),
MIX_ENT(SOUND_MIXER_IMIX, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV, 0x00, 0, 0, 0x00, 0, 0), /* Obsolete. Use IGAIN */
MIX_ENT(SOUND_MIXER_IGAIN, 0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_OGAIN, 0x00, 0, 0, 0x00, 0, 0)
};
/* SM_GAMES Master volume is lower and PCM & FM volumes
higher than with SB Pro. This improves the
sound quality */
static int smg_default_levels[32] =
{
0x2020, /* Master Volume */
0x4b4b, /* Bass */
0x4b4b, /* Treble */
0x6464, /* FM */
0x6464, /* PCM */
0x4b4b, /* PC Speaker */
0x4b4b, /* Ext Line */
0x0000, /* Mic */
0x4b4b, /* CD */
0x4b4b, /* Recording monitor */
0x4b4b, /* SB PCM */
0x4b4b, /* Recording level */
0x4b4b, /* Input gain */
0x4b4b, /* Output gain */
0x4040, /* Line1 */
0x4040, /* Line2 */
0x1515 /* Line3 */
};
static int sb_default_levels[32] =
{
0x5a5a, /* Master Volume */
0x4b4b, /* Bass */
0x4b4b, /* Treble */
0x4b4b, /* FM */
0x4b4b, /* PCM */
0x4b4b, /* PC Speaker */
0x4b4b, /* Ext Line */
0x1010, /* Mic */
0x4b4b, /* CD */
0x0000, /* Recording monitor */
0x4b4b, /* SB PCM */
0x4b4b, /* Recording level */
0x4b4b, /* Input gain */
0x4b4b, /* Output gain */
0x4040, /* Line1 */
0x4040, /* Line2 */
0x1515 /* Line3 */
};
static unsigned char sb16_recmasks_L[SOUND_MIXER_NRDEVICES] =
{
0x00, /* SOUND_MIXER_VOLUME */
0x00, /* SOUND_MIXER_BASS */
0x00, /* SOUND_MIXER_TREBLE */
0x40, /* SOUND_MIXER_SYNTH */
0x00, /* SOUND_MIXER_PCM */
0x00, /* SOUND_MIXER_SPEAKER */
0x10, /* SOUND_MIXER_LINE */
0x01, /* SOUND_MIXER_MIC */
0x04, /* SOUND_MIXER_CD */
0x00, /* SOUND_MIXER_IMIX */
0x00, /* SOUND_MIXER_ALTPCM */
0x00, /* SOUND_MIXER_RECLEV */
0x00, /* SOUND_MIXER_IGAIN */
0x00 /* SOUND_MIXER_OGAIN */
};
static unsigned char sb16_recmasks_R[SOUND_MIXER_NRDEVICES] =
{
0x00, /* SOUND_MIXER_VOLUME */
0x00, /* SOUND_MIXER_BASS */
0x00, /* SOUND_MIXER_TREBLE */
0x20, /* SOUND_MIXER_SYNTH */
0x00, /* SOUND_MIXER_PCM */
0x00, /* SOUND_MIXER_SPEAKER */
0x08, /* SOUND_MIXER_LINE */
0x01, /* SOUND_MIXER_MIC */
0x02, /* SOUND_MIXER_CD */
0x00, /* SOUND_MIXER_IMIX */
0x00, /* SOUND_MIXER_ALTPCM */
0x00, /* SOUND_MIXER_RECLEV */
0x00, /* SOUND_MIXER_IGAIN */
0x00 /* SOUND_MIXER_OGAIN */
};
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 int sbmixnum = 1;
static void sb_mixer_reset(sb_devc * devc);
void sb_mixer_set_stereo(sb_devc * devc, int mode)
{
sb_chgmixer(devc, OUT_FILTER, STEREO_DAC, (mode ? STEREO_DAC : MONO_DAC));
}
static int detect_mixer(sb_devc * devc)
{
/* Just trust the mixer is there */
return 1;
}
static void change_bits(sb_devc * devc, unsigned char *regval, int dev, int chn, int newval)
{
unsigned char mask;
int shift;
mask = (1 << (*devc->iomap)[dev][chn].nbits) - 1;
newval = (int) ((newval * mask) + 50) / 100; /* Scale */
shift = (*devc->iomap)[dev][chn].bitoffs - (*devc->iomap)[dev][LEFT_CHN].nbits + 1;
*regval &= ~(mask << shift); /* Mask out previous value */
*regval |= (newval & mask) << shift; /* Set the new value */
}
static int sb_mixer_get(sb_devc * devc, int dev)
{
if (!((1 << dev) & devc->supported_devices))
return -EINVAL;
return devc->levels[dev];
}
void smw_mixer_init(sb_devc * devc)
{
int i;
sb_setmixer(devc, 0x00, 0x18); /* Mute unused (Telephone) line */
sb_setmixer(devc, 0x10, 0x38); /* Config register 2 */
devc->supported_devices = 0;
for (i = 0; i < sizeof(smw_mix_regs); i++)
if (smw_mix_regs[i] != 0)
devc->supported_devices |= (1 << i);
devc->supported_rec_devices = devc->supported_devices &
~(SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_PCM | SOUND_MASK_VOLUME);
sb_mixer_reset(devc);
}
int sb_common_mixer_set(sb_devc * devc, int dev, int left, int right)
{
int regoffs;
unsigned char val;
if ((dev < 0) || (dev >= devc->iomap_sz))
return -EINVAL;
regoffs = (*devc->iomap)[dev][LEFT_CHN].regno;
if (regoffs == 0)
return -EINVAL;
val = sb_getmixer(devc, regoffs);
change_bits(devc, &val, dev, LEFT_CHN, left);
if ((*devc->iomap)[dev][RIGHT_CHN].regno != regoffs) /*
* Change register
*/
{
sb_setmixer(devc, regoffs, val); /*
* Save the old one
*/
regoffs = (*devc->iomap)[dev][RIGHT_CHN].regno;
if (regoffs == 0)
return left | (left << 8); /*
* Just left channel present
*/
val = sb_getmixer(devc, regoffs); /*
* Read the new one
*/
}
change_bits(devc, &val, dev, RIGHT_CHN, right);
sb_setmixer(devc, regoffs, val);
return left | (right << 8);
}
static int smw_mixer_set(sb_devc * devc, int dev, int left, int right)
{
int reg, val;
switch (dev)
{
case SOUND_MIXER_VOLUME:
sb_setmixer(devc, 0x0b, 96 - (96 * left / 100)); /* 96=mute, 0=max */
sb_setmixer(devc, 0x0c, 96 - (96 * right / 100));
break;
case SOUND_MIXER_BASS:
case SOUND_MIXER_TREBLE:
devc->levels[dev] = left | (right << 8);
/* Set left bass and treble values */
val = ((devc->levels[SOUND_MIXER_TREBLE] & 0xff) * 16 / (unsigned) 100) << 4;
val |= ((devc->levels[SOUND_MIXER_BASS] & 0xff) * 16 / (unsigned) 100) & 0x0f;
sb_setmixer(devc, 0x0d, val);
/* Set right bass and treble values */
val = (((devc->levels[SOUND_MIXER_TREBLE] >> 8) & 0xff) * 16 / (unsigned) 100) << 4;
val |= (((devc->levels[SOUND_MIXER_BASS] >> 8) & 0xff) * 16 / (unsigned) 100) & 0x0f;
sb_setmixer(devc, 0x0e, val);
break;
default:
/* bounds check */
if (dev < 0 || dev >= ARRAY_SIZE(smw_mix_regs))
return -EINVAL;
reg = smw_mix_regs[dev];
if (reg == 0)
return -EINVAL;
sb_setmixer(devc, reg, (24 - (24 * left / 100)) | 0x20); /* 24=mute, 0=max */
sb_setmixer(devc, reg + 1, (24 - (24 * right / 100)) | 0x40);
}
devc->levels[dev] = left | (right << 8);
return left | (right << 8);
}
static int sb_mixer_set(sb_devc * devc, int dev, int value)
{
int left = value & 0x000000ff;
int right = (value & 0x0000ff00) >> 8;
int retval;
if (left > 100)
left = 100;
if (right > 100)
right = 100;
if ((dev < 0) || (dev > 31))
return -EINVAL;
if (!(devc->supported_devices & (1 << dev))) /*
* Not supported
*/
return -EINVAL;
/* Differentiate depending on the chipsets */
switch (devc->model) {
case MDL_SMW:
retval = smw_mixer_set(devc, dev, left, right);
break;
case MDL_ESS:
retval = ess_mixer_set(devc, dev, left, right);
break;
default:
retval = sb_common_mixer_set(devc, dev, left, right);
}
if (retval >= 0) devc->levels[dev] = retval;
return retval;
}
/*
* set_recsrc doesn't apply to ES188x
*/
static void set_recsrc(sb_devc * devc, int src)
{
sb_setmixer(devc, RECORD_SRC, (sb_getmixer(devc, RECORD_SRC) & ~7) | (src & 0x7));
}
static int set_recmask(sb_devc * devc, int mask)
{
int devmask, i;
unsigned char regimageL, regimageR;
devmask = mask & devc->supported_rec_devices;
switch (devc->model)
{
case MDL_SBPRO:
case MDL_ESS:
case MDL_JAZZ:
case MDL_SMW:
if (devc->model == MDL_ESS && ess_set_recmask (devc, &devmask)) {
break;
};
if (devmask != SOUND_MASK_MIC &&
devmask != SOUND_MASK_LINE &&
devmask != SOUND_MASK_CD)
{
/*
* More than one device selected. Drop the
* previous selection
*/
devmask &= ~devc->recmask;
}
if (devmask != SOUND_MASK_MIC &&
devmask != SOUND_MASK_LINE &&
devmask != SOUND_MASK_CD)
{
/*
* More than one device selected. Default to
* mic
*/
devmask = SOUND_MASK_MIC;
}
if (devmask ^ devc->recmask) /*
* Input source changed
*/
{
switch (devmask)
{
case SOUND_MASK_MIC:
set_recsrc(devc, SRC__MIC);
break;
case SOUND_MASK_LINE:
set_recsrc(devc, SRC__LINE);
break;
case SOUND_MASK_CD:
set_recsrc(devc, SRC__CD);
break;
default:
set_recsrc(devc, SRC__MIC);
}
}
break;
case MDL_SB16:
if (!devmask)
devmask = SOUND_MASK_MIC;
if (devc->submodel == SUBMDL_ALS007)
{
switch (devmask)
{
case SOUND_MASK_LINE:
sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_LINE);
break;
case SOUND_MASK_CD:
sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_CD);
break;
case SOUND_MASK_SYNTH:
sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_SYNTH);
break;
default: /* Also takes care of SOUND_MASK_MIC case */
sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_MIC);
break;
}
}
else
{
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 (devc, SB16_IMASK_L, regimageL);
sb_setmixer (devc, SB16_IMASK_R, regimageR);
}
}
break;
}
devc->recmask = devmask;
return devc->recmask;
}
static int set_outmask(sb_devc * devc, int mask)
{
int devmask, i;
unsigned char regimage;
devmask = mask & devc->supported_out_devices;
switch (devc->model)
{
case MDL_SB16:
if (devc->submodel == SUBMDL_ALS007)
break;
else
{
regimage = 0;
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
{
if ((1 << i) & devmask)
{
regimage |= (sb16_recmasks_L[i] | sb16_recmasks_R[i]);
}
sb_setmixer (devc, SB16_OMASK, regimage);
}
}
break;
default:
break;
}
devc->outmask = devmask;
return devc->outmask;
}
static int sb_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
{
sb_devc *devc = mixer_devs[dev]->devc;
int val, ret;
int __user *p = arg;
/*
* Use ioctl(fd, SOUND_MIXER_AGC, &mode) to turn AGC off (0) or on (1).
* Use ioctl(fd, SOUND_MIXER_3DSE, &mode) to turn 3DSE off (0) or on (1)
* or mode==2 put 3DSE state to mode.
*/
if (devc->model == MDL_SB16) {
if (cmd == SOUND_MIXER_AGC)
{
if (get_user(val, p))
return -EFAULT;
sb_setmixer(devc, 0x43, (~val) & 0x01);
return 0;
}
if (cmd == SOUND_MIXER_3DSE)
{
/* I put here 15, but I don't know the exact version.
At least my 4.13 havn't 3DSE, 4.16 has it. */
if (devc->minor < 15)
return -EINVAL;
if (get_user(val, p))
return -EFAULT;
if (val == 0 || val == 1)
sb_chgmixer(devc, AWE_3DSE, 0x01, val);
else if (val == 2)
{
ret = sb_getmixer(devc, AWE_3DSE)&0x01;
return put_user(ret, p);
}
else
return -EINVAL;
return 0;
}
}
if (((cmd >> 8) & 0xff) == 'M')
{
if (_SIOC_DIR(cmd) & _SIOC_WRITE)
{
if (get_user(val, p))
return -EFAULT;
switch (cmd & 0xff)
{
case SOUND_MIXER_RECSRC:
ret = set_recmask(devc, val);
break;
case SOUND_MIXER_OUTSRC:
ret = set_outmask(devc, val);
break;
default:
ret = sb_mixer_set(devc, cmd & 0xff, val);
}
}
else switch (cmd & 0xff)
{
case SOUND_MIXER_RECSRC:
ret = devc->recmask;
break;
case SOUND_MIXER_OUTSRC:
ret = devc->outmask;
break;
case SOUND_MIXER_DEVMASK:
ret = devc->supported_devices;
break;
case SOUND_MIXER_STEREODEVS:
ret = devc->supported_devices;
/* The ESS seems to have stereo mic controls */
if (devc->model == MDL_ESS)
ret &= ~(SOUND_MASK_SPEAKER|SOUND_MASK_IMIX);
else if (devc->model != MDL_JAZZ && devc->model != MDL_SMW)
ret &= ~(SOUND_MASK_MIC | SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
break;
case SOUND_MIXER_RECMASK:
ret = devc->supported_rec_devices;
break;
case SOUND_MIXER_OUTMASK:
ret = devc->supported_out_devices;
break;
case SOUND_MIXER_CAPS:
ret = devc->mixer_caps;
break;
default:
ret = sb_mixer_get(devc, cmd & 0xff);
break;
}
return put_user(ret, p);
} else
return -EINVAL;
}
static struct mixer_operations sb_mixer_operations =
{
.owner = THIS_MODULE,
.id = "SB",
.name = "Sound Blaster",
.ioctl = sb_mixer_ioctl
};
static struct mixer_operations als007_mixer_operations =
{
.owner = THIS_MODULE,
.id = "ALS007",
.name = "Avance ALS-007",
.ioctl = sb_mixer_ioctl
};
static void sb_mixer_reset(sb_devc * devc)
{
char name[32];
int i;
sprintf(name, "SB_%d", devc->sbmixnum);
if (devc->sbmo.sm_games)
devc->levels = load_mixer_volumes(name, smg_default_levels, 1);
else
devc->levels = load_mixer_volumes(name, sb_default_levels, 1);
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
sb_mixer_set(devc, i, devc->levels[i]);
if (devc->model != MDL_ESS || !ess_mixer_reset (devc)) {
set_recmask(devc, SOUND_MASK_MIC);
};
}
int sb_mixer_init(sb_devc * devc, struct module *owner)
{
int mixer_type = 0;
int m;
devc->sbmixnum = sbmixnum++;
devc->levels = NULL;
sb_setmixer(devc, 0x00, 0); /* Reset mixer */
if (!(mixer_type = detect_mixer(devc)))
return 0; /* No mixer. Why? */
switch (devc->model)
{
case MDL_ESSPCI:
case MDL_YMPCI:
case MDL_SBPRO:
case MDL_AZTECH:
case MDL_JAZZ:
devc->mixer_caps = SOUND_CAP_EXCL_INPUT;
devc->supported_devices = SBPRO_MIXER_DEVICES;
devc->supported_rec_devices = SBPRO_RECORDING_DEVICES;
devc->iomap = &sbpro_mix;
devc->iomap_sz = ARRAY_SIZE(sbpro_mix);
break;
case MDL_ESS:
ess_mixer_init (devc);
break;
case MDL_SMW:
devc->mixer_caps = SOUND_CAP_EXCL_INPUT;
devc->supported_devices = 0;
devc->supported_rec_devices = 0;
devc->iomap = &sbpro_mix;
devc->iomap_sz = ARRAY_SIZE(sbpro_mix);
smw_mixer_init(devc);
break;
case MDL_SB16:
devc->mixer_caps = 0;
devc->supported_rec_devices = SB16_RECORDING_DEVICES;
devc->supported_out_devices = SB16_OUTFILTER_DEVICES;
if (devc->submodel != SUBMDL_ALS007)
{
devc->supported_devices = SB16_MIXER_DEVICES;
devc->iomap = &sb16_mix;
devc->iomap_sz = ARRAY_SIZE(sb16_mix);
}
else
{
devc->supported_devices = ALS007_MIXER_DEVICES;
devc->iomap = &als007_mix;
devc->iomap_sz = ARRAY_SIZE(als007_mix);
}
break;
default:
printk(KERN_WARNING "sb_mixer: Unsupported mixer type %d\n", devc->model);
return 0;
}
m = sound_alloc_mixerdev();
if (m == -1)
return 0;
mixer_devs[m] = (struct mixer_operations *)kmalloc(sizeof(struct mixer_operations), GFP_KERNEL);
if (mixer_devs[m] == NULL)
{
printk(KERN_ERR "sb_mixer: Can't allocate memory\n");
sound_unload_mixerdev(m);
return 0;
}
if (devc->submodel != SUBMDL_ALS007)
memcpy ((char *) mixer_devs[m], (char *) &sb_mixer_operations, sizeof (struct mixer_operations));
else
memcpy ((char *) mixer_devs[m], (char *) &als007_mixer_operations, sizeof (struct mixer_operations));
mixer_devs[m]->devc = devc;
if (owner)
mixer_devs[m]->owner = owner;
devc->my_mixerdev = m;
sb_mixer_reset(devc);
return 1;
}
void sb_mixer_unload(sb_devc *devc)
{
if (devc->my_mixerdev == -1)
return;
kfree(mixer_devs[devc->my_mixerdev]);
sound_unload_mixerdev(devc->my_mixerdev);
sbmixnum--;
}
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