sound/core/oss/mixer_oss.c

   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/smp_lock.h>
  25 #include <linux/slab.h>
  26 #include <linux/time.h>
  27 #include <linux/string.h>
  28 #include <sound/core.h>
  29 #include <sound/minors.h>
  30 #include <sound/control.h>
  31 #include <sound/info.h>
  32 #include <sound/mixer_oss.h>
  33 #include <linux/soundcard.h>
  34
  35 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  36
  37 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  38 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  39 MODULE_LICENSE("GPL");
  40 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  41
  42 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  43 {
  44         struct snd_card *card;
  45         struct snd_mixer_oss_file *fmixer;
  46         int err;
  47
  48         card = snd_lookup_oss_minor_data(iminor(inode),
  49                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  50         if (card == NULL)
  51                 return -ENODEV;
  52         if (card->mixer_oss == NULL)
  53                 return -ENODEV;
  54         err = snd_card_file_add(card, file);
  55         if (err < 0)
  56                 return err;
  57         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  58         if (fmixer == NULL) {
  59                 snd_card_file_remove(card, file);
  60                 return -ENOMEM;
  61         }
  62         fmixer->card = card;
  63         fmixer->mixer = card->mixer_oss;
  64         file->private_data = fmixer;
  65         if (!try_module_get(card->module)) {
  66                 kfree(fmixer);
  67                 snd_card_file_remove(card, file);
  68                 return -EFAULT;
  69         }
  70         return 0;
  71 }
  72
  73 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  74 {
  75         struct snd_mixer_oss_file *fmixer;
  76
  77         if (file->private_data) {
  78                 fmixer = (struct snd_mixer_oss_file *) file->private_data;
  79                 module_put(fmixer->card->module);
  80                 snd_card_file_remove(fmixer->card, file);
  81                 kfree(fmixer);
  82         }
  83         return 0;
  84 }
  85
  86 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  87                               mixer_info __user *_info)
  88 {
  89         struct snd_card *card = fmixer->card;
  90         struct snd_mixer_oss *mixer = fmixer->mixer;
  91         struct mixer_info info;
  92
  93         memset(&info, 0, sizeof(info));
  94         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
  95         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
  96         info.modify_counter = card->mixer_oss_change_count;
  97         if (copy_to_user(_info, &info, sizeof(info)))
  98                 return -EFAULT;
  99         return 0;
 100 }
 101
 102 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 103                                        _old_mixer_info __user *_info)
 104 {
 105         struct snd_card *card = fmixer->card;
 106         struct snd_mixer_oss *mixer = fmixer->mixer;
 107         _old_mixer_info info;
 108
 109         memset(&info, 0, sizeof(info));
 110         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 111         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 112         if (copy_to_user(_info, &info, sizeof(info)))
 113                 return -EFAULT;
 114         return 0;
 115 }
 116
 117 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 118 {
 119         struct snd_mixer_oss *mixer = fmixer->mixer;
 120         int result = 0;
 121
 122         if (mixer == NULL)
 123                 return -EIO;
 124         if (mixer->get_recsrc && mixer->put_recsrc)
 125                 result |= SOUND_CAP_EXCL_INPUT;
 126         return result;
 127 }
 128
 129 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 130 {
 131         struct snd_mixer_oss *mixer = fmixer->mixer;
 132         struct snd_mixer_oss_slot *pslot;
 133         int result = 0, chn;
 134
 135         if (mixer == NULL)
 136                 return -EIO;
 137         for (chn = 0; chn < 31; chn++) {
 138                 pslot = &mixer->slots[chn];
 139                 if (pslot->put_volume || pslot->put_recsrc)
 140                         result |= 1 << chn;
 141         }
 142         return result;
 143 }
 144
 145 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 146 {
 147         struct snd_mixer_oss *mixer = fmixer->mixer;
 148         struct snd_mixer_oss_slot *pslot;
 149         int result = 0, chn;
 150
 151         if (mixer == NULL)
 152                 return -EIO;
 153         for (chn = 0; chn < 31; chn++) {
 154                 pslot = &mixer->slots[chn];
 155                 if (pslot->put_volume && pslot->stereo)
 156                         result |= 1 << chn;
 157         }
 158         return result;
 159 }
 160
 161 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 162 {
 163         struct snd_mixer_oss *mixer = fmixer->mixer;
 164         int result = 0;
 165
 166         if (mixer == NULL)
 167                 return -EIO;
 168         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 169                 result = mixer->mask_recsrc;
 170         } else {
 171                 struct snd_mixer_oss_slot *pslot;
 172                 int chn;
 173                 for (chn = 0; chn < 31; chn++) {
 174                         pslot = &mixer->slots[chn];
 175                         if (pslot->put_recsrc)
 176                                 result |= 1 << chn;
 177                 }
 178         }
 179         return result;
 180 }
 181
 182 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 183 {
 184         struct snd_mixer_oss *mixer = fmixer->mixer;
 185         int result = 0;
 186
 187         if (mixer == NULL)
 188                 return -EIO;
 189         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 190                 int err;
 191                 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
 192                         return err;
 193                 result = 1 << result;
 194         } else {
 195                 struct snd_mixer_oss_slot *pslot;
 196                 int chn;
 197                 for (chn = 0; chn < 31; chn++) {
 198                         pslot = &mixer->slots[chn];
 199                         if (pslot->get_recsrc) {
 200                                 int active = 0;
 201                                 pslot->get_recsrc(fmixer, pslot, &active);
 202                                 if (active)
 203                                         result |= 1 << chn;
 204                         }
 205                 }
 206         }
 207         return mixer->oss_recsrc = result;
 208 }
 209
 210 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 211 {
 212         struct snd_mixer_oss *mixer = fmixer->mixer;
 213         struct snd_mixer_oss_slot *pslot;
 214         int chn, active;
 215         int result = 0;
 216
 217         if (mixer == NULL)
 218                 return -EIO;
 219         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 220                 if (recsrc & ~mixer->oss_recsrc)
 221                         recsrc &= ~mixer->oss_recsrc;
 222                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 223                 mixer->get_recsrc(fmixer, &result);
 224                 result = 1 << result;
 225         }
 226         for (chn = 0; chn < 31; chn++) {
 227                 pslot = &mixer->slots[chn];
 228                 if (pslot->put_recsrc) {
 229                         active = (recsrc & (1 << chn)) ? 1 : 0;
 230                         pslot->put_recsrc(fmixer, pslot, active);
 231                 }
 232         }
 233         if (! result) {
 234                 for (chn = 0; chn < 31; chn++) {
 235                         pslot = &mixer->slots[chn];
 236                         if (pslot->get_recsrc) {
 237                                 active = 0;
 238                                 pslot->get_recsrc(fmixer, pslot, &active);
 239                                 if (active)
 240                                         result |= 1 << chn;
 241                         }
 242                 }
 243         }
 244         return result;
 245 }
 246
 247 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 248 {
 249         struct snd_mixer_oss *mixer = fmixer->mixer;
 250         struct snd_mixer_oss_slot *pslot;
 251         int result = 0, left, right;
 252
 253         if (mixer == NULL || slot > 30)
 254                 return -EIO;
 255         pslot = &mixer->slots[slot];
 256         left = pslot->volume[0];
 257         right = pslot->volume[1];
 258         if (pslot->get_volume)
 259                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 260         if (!pslot->stereo)
 261                 right = left;
 262         snd_assert(left >= 0 && left <= 100, return -EIO);
 263         snd_assert(right >= 0 && right <= 100, return -EIO);
 264         if (result >= 0) {
 265                 pslot->volume[0] = left;
 266                 pslot->volume[1] = right;
 267                 result = (left & 0xff) | ((right & 0xff) << 8);
 268         }
 269         return result;
 270 }
 271
 272 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 273                                     int slot, int volume)
 274 {
 275         struct snd_mixer_oss *mixer = fmixer->mixer;
 276         struct snd_mixer_oss_slot *pslot;
 277         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 278
 279         if (mixer == NULL || slot > 30)
 280                 return -EIO;
 281         pslot = &mixer->slots[slot];
 282         if (left > 100)
 283                 left = 100;
 284         if (right > 100)
 285                 right = 100;
 286         if (!pslot->stereo)
 287                 right = left;
 288         if (pslot->put_volume)
 289                 result = pslot->put_volume(fmixer, pslot, left, right);
 290         if (result < 0)
 291                 return result;
 292         pslot->volume[0] = left;
 293         pslot->volume[1] = right;
 294         return (left & 0xff) | ((right & 0xff) << 8);
 295 }
 296
 297 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 298 {
 299         void __user *argp = (void __user *)arg;
 300         int __user *p = argp;
 301         int tmp;
 302
 303         snd_assert(fmixer != NULL, return -ENXIO);
 304         if (((cmd >> 8) & 0xff) == 'M') {
 305                 switch (cmd) {
 306                 case SOUND_MIXER_INFO:
 307                         return snd_mixer_oss_info(fmixer, argp);
 308                 case SOUND_OLD_MIXER_INFO:
 309                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 310                 case SOUND_MIXER_WRITE_RECSRC:
 311                         if (get_user(tmp, p))
 312                                 return -EFAULT;
 313                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 314                         if (tmp < 0)
 315                                 return tmp;
 316                         return put_user(tmp, p);
 317                 case OSS_GETVERSION:
 318                         return put_user(SNDRV_OSS_VERSION, p);
 319                 case OSS_ALSAEMULVER:
 320                         return put_user(1, p);
 321                 case SOUND_MIXER_READ_DEVMASK:
 322                         tmp = snd_mixer_oss_devmask(fmixer);
 323                         if (tmp < 0)
 324                                 return tmp;
 325                         return put_user(tmp, p);
 326                 case SOUND_MIXER_READ_STEREODEVS:
 327                         tmp = snd_mixer_oss_stereodevs(fmixer);
 328                         if (tmp < 0)
 329                                 return tmp;
 330                         return put_user(tmp, p);
 331                 case SOUND_MIXER_READ_RECMASK:
 332                         tmp = snd_mixer_oss_recmask(fmixer);
 333                         if (tmp < 0)
 334                                 return tmp;
 335                         return put_user(tmp, p);
 336                 case SOUND_MIXER_READ_CAPS:
 337                         tmp = snd_mixer_oss_caps(fmixer);
 338                         if (tmp < 0)
 339                                 return tmp;
 340                         return put_user(tmp, p);
 341                 case SOUND_MIXER_READ_RECSRC:
 342                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 343                         if (tmp < 0)
 344                                 return tmp;
 345                         return put_user(tmp, p);
 346                 }
 347         }
 348         if (cmd & SIOC_IN) {
 349                 if (get_user(tmp, p))
 350                         return -EFAULT;
 351                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 352                 if (tmp < 0)
 353                         return tmp;
 354                 return put_user(tmp, p);
 355         } else if (cmd & SIOC_OUT) {
 356                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 357                 if (tmp < 0)
 358                         return tmp;
 359                 return put_user(tmp, p);
 360         }
 361         return -ENXIO;
 362 }
 363
 364 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 365 {
 366         return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
 367 }
 368
 369 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 370 {
 371         struct snd_mixer_oss_file fmixer;
 372
 373         snd_assert(card != NULL, return -ENXIO);
 374         if (card->mixer_oss == NULL)
 375                 return -ENXIO;
 376         memset(&fmixer, 0, sizeof(fmixer));
 377         fmixer.card = card;
 378         fmixer.mixer = card->mixer_oss;
 379         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 380 }
 381
 382 #ifdef CONFIG_COMPAT
 383 /* all compatible */
 384 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 385 #else
 386 #define snd_mixer_oss_ioctl_compat      NULL
 387 #endif
 388
 389 /*
 390  *  REGISTRATION PART
 391  */
 392
 393 static struct file_operations snd_mixer_oss_f_ops =
 394 {
 395         .owner =        THIS_MODULE,
 396         .open =         snd_mixer_oss_open,
 397         .release =      snd_mixer_oss_release,
 398         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 399         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 400 };
 401
 402 /*
 403  *  utilities
 404  */
 405
 406 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 407 {
 408         long orange = omax - omin, nrange = nmax - nmin;
 409
 410         if (orange == 0)
 411                 return 0;
 412         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 413 }
 414
 415 /* convert from alsa native to oss values (0-100) */
 416 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 417 {
 418         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 419                 return *old;
 420         return snd_mixer_oss_conv(val, min, max, 0, 100);
 421 }
 422
 423 /* convert from oss to alsa native values */
 424 static long snd_mixer_oss_conv2(long val, long min, long max)
 425 {
 426         return snd_mixer_oss_conv(val, 0, 100, min, max);
 427 }
 428
 429 #if 0
 430 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 431 {
 432         struct snd_mixer_oss *mixer = card->mixer_oss;
 433         if (mixer)
 434                 mixer->mask_recsrc |= 1 << slot;
 435 }
 436
 437 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 438 {
 439         struct snd_mixer_oss *mixer = card->mixer_oss;
 440         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 441                 return 1;
 442         return 0;
 443 }
 444 #endif
 445
 446 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 447
 448 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 449 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 450 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 451 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 452 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 453 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 454 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 455 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 456 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 457 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 458 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 459
 460 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 461
 462 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 463 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 464 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 465 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 466 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 467 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 468 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 469 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 470 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 471 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 472 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 473
 474 struct slot {
 475         unsigned int signature;
 476         unsigned int present;
 477         unsigned int channels;
 478         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 479         unsigned int capture_item;
 480         struct snd_mixer_oss_assign_table *assigned;
 481         unsigned int allocated: 1;
 482 };
 483
 484 #define ID_UNKNOWN      ((unsigned int)-1)
 485
 486 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 487 {
 488         struct snd_card *card = mixer->card;
 489         struct snd_ctl_elem_id id;
 490
 491         memset(&id, 0, sizeof(id));
 492         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 493         strcpy(id.name, name);
 494         id.index = index;
 495         return snd_ctl_find_id(card, &id);
 496 }
 497
 498 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 499                                           struct snd_mixer_oss_slot *pslot,
 500                                           unsigned int numid,
 501                                           int *left, int *right)
 502 {
 503         struct snd_ctl_elem_info *uinfo;
 504         struct snd_ctl_elem_value *uctl;
 505         struct snd_kcontrol *kctl;
 506         struct snd_card *card = fmixer->card;
 507
 508         if (numid == ID_UNKNOWN)
 509                 return;
 510         down_read(&card->controls_rwsem);
 511         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 512                 up_read(&card->controls_rwsem);
 513                 return;
 514         }
 515         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 516         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 517         if (uinfo == NULL || uctl == NULL)
 518                 goto __unalloc;
 519         if (kctl->info(kctl, uinfo))
 520                 goto __unalloc;
 521         if (kctl->get(kctl, uctl))
 522                 goto __unalloc;
 523         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 524             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 525                 goto __unalloc;
 526         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 527         if (uinfo->count > 1)
 528                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 529       __unalloc:
 530         up_read(&card->controls_rwsem);
 531         kfree(uctl);
 532         kfree(uinfo);
 533 }
 534
 535 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 536                                          struct snd_mixer_oss_slot *pslot,
 537                                          unsigned int numid,
 538                                          int *left, int *right,
 539                                          int route)
 540 {
 541         struct snd_ctl_elem_info *uinfo;
 542         struct snd_ctl_elem_value *uctl;
 543         struct snd_kcontrol *kctl;
 544         struct snd_card *card = fmixer->card;
 545
 546         if (numid == ID_UNKNOWN)
 547                 return;
 548         down_read(&card->controls_rwsem);
 549         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 550                 up_read(&card->controls_rwsem);
 551                 return;
 552         }
 553         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 554         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 555         if (uinfo == NULL || uctl == NULL)
 556                 goto __unalloc;
 557         if (kctl->info(kctl, uinfo))
 558                 goto __unalloc;
 559         if (kctl->get(kctl, uctl))
 560                 goto __unalloc;
 561         if (!uctl->value.integer.value[0]) {
 562                 *left = 0;
 563                 if (uinfo->count == 1)
 564                         *right = 0;
 565         }
 566         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 567                 *right = 0;
 568       __unalloc:
 569         up_read(&card->controls_rwsem);
 570         kfree(uctl);
 571         kfree(uinfo);
 572 }
 573
 574 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 575                                      struct snd_mixer_oss_slot *pslot,
 576                                      int *left, int *right)
 577 {
 578         struct slot *slot = (struct slot *)pslot->private_data;
 579
 580         *left = *right = 100;
 581         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 582                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 583         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 584                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 585         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 586                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 587         }
 588         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 589                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 590         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 591                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 592         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 593                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 594         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 595                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 596         }
 597         return 0;
 598 }
 599
 600 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 601                                           struct snd_mixer_oss_slot *pslot,
 602                                           unsigned int numid,
 603                                           int left, int right)
 604 {
 605         struct snd_ctl_elem_info *uinfo;
 606         struct snd_ctl_elem_value *uctl;
 607         struct snd_kcontrol *kctl;
 608         struct snd_card *card = fmixer->card;
 609         int res;
 610
 611         if (numid == ID_UNKNOWN)
 612                 return;
 613         down_read(&card->controls_rwsem);
 614         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 615                 return;
 616         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 617         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 618         if (uinfo == NULL || uctl == NULL)
 619                 goto __unalloc;
 620         if (kctl->info(kctl, uinfo))
 621                 goto __unalloc;
 622         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 623             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 624                 goto __unalloc;
 625         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 626         if (uinfo->count > 1)
 627                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 628         if ((res = kctl->put(kctl, uctl)) < 0)
 629                 goto __unalloc;
 630         if (res > 0)
 631                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 632       __unalloc:
 633         up_read(&card->controls_rwsem);
 634         kfree(uctl);
 635         kfree(uinfo);
 636 }
 637
 638 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 639                                          struct snd_mixer_oss_slot *pslot,
 640                                          unsigned int numid,
 641                                          int left, int right,
 642                                          int route)
 643 {
 644         struct snd_ctl_elem_info *uinfo;
 645         struct snd_ctl_elem_value *uctl;
 646         struct snd_kcontrol *kctl;
 647         struct snd_card *card = fmixer->card;
 648         int res;
 649
 650         if (numid == ID_UNKNOWN)
 651                 return;
 652         down_read(&card->controls_rwsem);
 653         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 654                 up_read(&fmixer->card->controls_rwsem);
 655                 return;
 656         }
 657         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 658         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 659         if (uinfo == NULL || uctl == NULL)
 660                 goto __unalloc;
 661         if (kctl->info(kctl, uinfo))
 662                 goto __unalloc;
 663         if (uinfo->count > 1) {
 664                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 665                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 666                 if (route) {
 667                         uctl->value.integer.value[1] =
 668                         uctl->value.integer.value[2] = 0;
 669                 }
 670         } else {
 671                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 672         }
 673         if ((res = kctl->put(kctl, uctl)) < 0)
 674                 goto __unalloc;
 675         if (res > 0)
 676                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 677       __unalloc:
 678         up_read(&card->controls_rwsem);
 679         kfree(uctl);
 680         kfree(uinfo);
 681 }
 682
 683 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 684                                      struct snd_mixer_oss_slot *pslot,
 685                                      int left, int right)
 686 {
 687         struct slot *slot = (struct slot *)pslot->private_data;
 688
 689         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 690                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 691                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 692                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 693         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 694                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 695         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 696                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 697         }
 698         if (left || right) {
 699                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 700                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 701                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 702                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 703                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 704                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 705                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 706                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 707         } else {
 708                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 709                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 710                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 711                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 712                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 713                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 714                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 715                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 716                 }
 717         }
 718         return 0;
 719 }
 720
 721 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 722                                         struct snd_mixer_oss_slot *pslot,
 723                                         int *active)
 724 {
 725         struct slot *slot = (struct slot *)pslot->private_data;
 726         int left, right;
 727
 728         left = right = 1;
 729         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 730         *active = (left || right) ? 1 : 0;
 731         return 0;
 732 }
 733
 734 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 735                                            struct snd_mixer_oss_slot *pslot,
 736                                            int *active)
 737 {
 738         struct slot *slot = (struct slot *)pslot->private_data;
 739         int left, right;
 740
 741         left = right = 1;
 742         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 743         *active = (left || right) ? 1 : 0;
 744         return 0;
 745 }
 746
 747 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 748                                         struct snd_mixer_oss_slot *pslot,
 749                                         int active)
 750 {
 751         struct slot *slot = (struct slot *)pslot->private_data;
 752
 753         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 754         return 0;
 755 }
 756
 757 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 758                                            struct snd_mixer_oss_slot *pslot,
 759                                            int active)
 760 {
 761         struct slot *slot = (struct slot *)pslot->private_data;
 762
 763         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 764         return 0;
 765 }
 766
 767 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 768 {
 769         struct snd_card *card = fmixer->card;
 770         struct snd_mixer_oss *mixer = fmixer->mixer;
 771         struct snd_kcontrol *kctl;
 772         struct snd_mixer_oss_slot *pslot;
 773         struct slot *slot;
 774         struct snd_ctl_elem_info *uinfo;
 775         struct snd_ctl_elem_value *uctl;
 776         int err, idx;
 777
 778         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 779         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 780         if (uinfo == NULL || uctl == NULL) {
 781                 err = -ENOMEM;
 782                 goto __unlock;
 783         }
 784         down_read(&card->controls_rwsem);
 785         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 786         if (! kctl) {
 787                 err = -ENOENT;
 788                 goto __unlock;
 789         }
 790         if ((err = kctl->info(kctl, uinfo)) < 0)
 791                 goto __unlock;
 792         if ((err = kctl->get(kctl, uctl)) < 0)
 793                 goto __unlock;
 794         for (idx = 0; idx < 32; idx++) {
 795                 if (!(mixer->mask_recsrc & (1 << idx)))
 796                         continue;
 797                 pslot = &mixer->slots[idx];
 798                 slot = (struct slot *)pslot->private_data;
 799                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 800                         continue;
 801                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 802                         continue;
 803                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 804                         *active_index = idx;
 805                         break;
 806                 }
 807         }
 808         err = 0;
 809       __unlock:
 810         up_read(&card->controls_rwsem);
 811         kfree(uctl);
 812         kfree(uinfo);
 813         return err;
 814 }
 815
 816 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 817 {
 818         struct snd_card *card = fmixer->card;
 819         struct snd_mixer_oss *mixer = fmixer->mixer;
 820         struct snd_kcontrol *kctl;
 821         struct snd_mixer_oss_slot *pslot;
 822         struct slot *slot = NULL;
 823         struct snd_ctl_elem_info *uinfo;
 824         struct snd_ctl_elem_value *uctl;
 825         int err;
 826         unsigned int idx;
 827
 828         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 829         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 830         if (uinfo == NULL || uctl == NULL) {
 831                 err = -ENOMEM;
 832                 goto __unlock;
 833         }
 834         down_read(&card->controls_rwsem);
 835         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 836         if (! kctl) {
 837                 err = -ENOENT;
 838                 goto __unlock;
 839         }
 840         if ((err = kctl->info(kctl, uinfo)) < 0)
 841                 goto __unlock;
 842         for (idx = 0; idx < 32; idx++) {
 843                 if (!(mixer->mask_recsrc & (1 << idx)))
 844                         continue;
 845                 pslot = &mixer->slots[idx];
 846                 slot = (struct slot *)pslot->private_data;
 847                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 848                         continue;
 849                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 850                         continue;
 851                 if (idx == active_index)
 852                         break;
 853                 slot = NULL;
 854         }
 855         if (! slot)
 856                 goto __unlock;
 857         for (idx = 0; idx < uinfo->count; idx++)
 858                 uctl->value.enumerated.item[idx] = slot->capture_item;
 859         err = kctl->put(kctl, uctl);
 860         if (err > 0)
 861                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 862         err = 0;
 863       __unlock:
 864         up_read(&card->controls_rwsem);
 865         kfree(uctl);
 866         kfree(uinfo);
 867         return err;
 868 }
 869
 870 struct snd_mixer_oss_assign_table {
 871         int oss_id;
 872         const char *name;
 873         int index;
 874 };
 875
 876 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 877 {
 878         struct snd_ctl_elem_info *info;
 879         struct snd_kcontrol *kcontrol;
 880         struct snd_card *card = mixer->card;
 881         int err;
 882
 883         down_read(&card->controls_rwsem);
 884         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 885         if (kcontrol == NULL) {
 886                 up_read(&card->controls_rwsem);
 887                 return 0;
 888         }
 889         info = kmalloc(sizeof(*info), GFP_KERNEL);
 890         if (! info) {
 891                 up_read(&card->controls_rwsem);
 892                 return -ENOMEM;
 893         }
 894         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 895                 up_read(&card->controls_rwsem);
 896                 kfree(info);
 897                 return err;
 898         }
 899         slot->numid[item] = kcontrol->id.numid;
 900         up_read(&card->controls_rwsem);
 901         if (info->count > slot->channels)
 902                 slot->channels = info->count;
 903         slot->present |= 1 << item;
 904         kfree(info);
 905         return 0;
 906 }
 907
 908 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 909 {
 910         struct slot *p = (struct slot *)chn->private_data;
 911         if (p) {
 912                 if (p->allocated && p->assigned) {
 913                         kfree(p->assigned->name);
 914                         kfree(p->assigned);
 915                 }
 916                 kfree(p);
 917         }
 918 }
 919
 920 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 921 {
 922         int idx = rslot->number; /* remember this */
 923         if (rslot->private_free)
 924                 rslot->private_free(rslot);
 925         memset(rslot, 0, sizeof(*rslot));
 926         rslot->number = idx;
 927 }
 928
 929 /*
 930  * build an OSS mixer element.
 931  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 932  * when replace_old = 1, the old entry is replaced with the new one.
 933  */
 934 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
 935 {
 936         struct slot slot;
 937         struct slot *pslot;
 938         struct snd_kcontrol *kctl;
 939         struct snd_mixer_oss_slot *rslot;
 940         char str[64];
 941
 942         /* check if already assigned */
 943         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
 944                 return 0;
 945
 946         memset(&slot, 0, sizeof(slot));
 947         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
 948         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
 949                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
 950                 return 0;
 951         sprintf(str, "%s Switch", ptr->name);
 952         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 953                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
 954                 return 0;
 955         sprintf(str, "%s Route", ptr->name);
 956         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 957                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
 958                 return 0;
 959         sprintf(str, "%s Volume", ptr->name);
 960         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 961                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
 962                 return 0;
 963         sprintf(str, "%s Playback Switch", ptr->name);
 964         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 965                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
 966                 return 0;
 967         sprintf(str, "%s Playback Route", ptr->name);
 968         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 969                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
 970                 return 0;
 971         sprintf(str, "%s Playback Volume", ptr->name);
 972         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 973                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
 974                 return 0;
 975         sprintf(str, "%s Capture Switch", ptr->name);
 976         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 977                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
 978                 return 0;
 979         sprintf(str, "%s Capture Route", ptr->name);
 980         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 981                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
 982                 return 0;
 983         sprintf(str, "%s Capture Volume", ptr->name);
 984         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 985                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
 986                 return 0;
 987         down_read(&mixer->card->controls_rwsem);
 988         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
 989                 struct snd_ctl_elem_info *uinfo;
 990
 991                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 992                 if (! uinfo) {
 993                         up_read(&mixer->card->controls_rwsem);
 994                         return -ENOMEM;
 995                 }
 996
 997                 if (kctl->info(kctl, uinfo)) {
 998                         up_read(&mixer->card->controls_rwsem);
 999                         return 0;
1000                 }
1001                 strcpy(str, ptr->name);
1002                 if (!strcmp(str, "Master"))
1003                         strcpy(str, "Mix");
1004                 if (!strcmp(str, "Master Mono"))
1005                         strcpy(str, "Mix Mono");
1006                 slot.capture_item = 0;
1007                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1008                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1009                 } else {
1010                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1011                                 uinfo->value.enumerated.item = slot.capture_item;
1012                                 if (kctl->info(kctl, uinfo)) {
1013                                         up_read(&mixer->card->controls_rwsem);
1014                                         return 0;
1015                                 }
1016                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1017                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1018                                         break;
1019                                 }
1020                         }
1021                 }
1022                 kfree(uinfo);
1023         }
1024         up_read(&mixer->card->controls_rwsem);
1025         if (slot.present != 0) {
1026                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1027                 if (! pslot)
1028                         return -ENOMEM;
1029                 *pslot = slot;
1030                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1031                 pslot->assigned = ptr;
1032                 pslot->allocated = ptr_allocated;
1033                 rslot = &mixer->slots[ptr->oss_id];
1034                 mixer_slot_clear(rslot);
1035                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1036                 rslot->get_volume = snd_mixer_oss_get_volume1;
1037                 rslot->put_volume = snd_mixer_oss_put_volume1;
1038                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1039                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1040                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1041                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1042                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1043                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1044                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1045                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1046                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1047                 }
1048                 rslot->private_data = pslot;
1049                 rslot->private_free = snd_mixer_oss_slot_free;
1050                 return 1;
1051         }
1052         return 0;
1053 }
1054
1055 #ifdef CONFIG_PROC_FS
1056 /*
1057  */
1058 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1059 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1060         MIXER_VOL(VOLUME),
1061         MIXER_VOL(BASS),
1062         MIXER_VOL(TREBLE),
1063         MIXER_VOL(SYNTH),
1064         MIXER_VOL(PCM),
1065         MIXER_VOL(SPEAKER),
1066         MIXER_VOL(LINE),
1067         MIXER_VOL(MIC),
1068         MIXER_VOL(CD),
1069         MIXER_VOL(IMIX),
1070         MIXER_VOL(ALTPCM),
1071         MIXER_VOL(RECLEV),
1072         MIXER_VOL(IGAIN),
1073         MIXER_VOL(OGAIN),
1074         MIXER_VOL(LINE1),
1075         MIXER_VOL(LINE2),
1076         MIXER_VOL(LINE3),
1077         MIXER_VOL(DIGITAL1),
1078         MIXER_VOL(DIGITAL2),
1079         MIXER_VOL(DIGITAL3),
1080         MIXER_VOL(PHONEIN),
1081         MIXER_VOL(PHONEOUT),
1082         MIXER_VOL(VIDEO),
1083         MIXER_VOL(RADIO),
1084         MIXER_VOL(MONITOR),
1085 };
1086
1087 /*
1088  *  /proc interface
1089  */
1090
1091 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1092                                     struct snd_info_buffer *buffer)
1093 {
1094         struct snd_mixer_oss *mixer = entry->private_data;
1095         int i;
1096
1097         mutex_lock(&mixer->reg_mutex);
1098         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1099                 struct slot *p;
1100
1101                 if (! oss_mixer_names[i])
1102                         continue;
1103                 p = (struct slot *)mixer->slots[i].private_data;
1104                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1105                 if (p && p->assigned)
1106                         snd_iprintf(buffer, "\"%s\" %d\n",
1107                                     p->assigned->name,
1108                                     p->assigned->index);
1109                 else
1110                         snd_iprintf(buffer, "\"\" 0\n");
1111         }
1112         mutex_unlock(&mixer->reg_mutex);
1113 }
1114
1115 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1116                                      struct snd_info_buffer *buffer)
1117 {
1118         struct snd_mixer_oss *mixer = entry->private_data;
1119         char line[128], str[32], idxstr[16], *cptr;
1120         int ch, idx;
1121         struct snd_mixer_oss_assign_table *tbl;
1122         struct slot *slot;
1123
1124         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1125                 cptr = snd_info_get_str(str, line, sizeof(str));
1126                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1127                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1128                                 break;
1129                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1130                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1131                         continue;
1132                 }
1133                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1134                 if (! *str) {
1135                         /* remove the entry */
1136                         mutex_lock(&mixer->reg_mutex);
1137                         mixer_slot_clear(&mixer->slots[ch]);
1138                         mutex_unlock(&mixer->reg_mutex);
1139                         continue;
1140                 }
1141                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1142                 idx = simple_strtoul(idxstr, NULL, 10);
1143                 if (idx >= 0x4000) { /* too big */
1144                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1145                         continue;
1146                 }
1147                 mutex_lock(&mixer->reg_mutex);
1148                 slot = (struct slot *)mixer->slots[ch].private_data;
1149                 if (slot && slot->assigned &&
1150                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1151                         /* not changed */
1152                         goto __unlock;
1153                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1154                 if (! tbl) {
1155                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1156                         goto __unlock;
1157                 }
1158                 tbl->oss_id = ch;
1159                 tbl->name = kstrdup(str, GFP_KERNEL);
1160                 if (! tbl->name) {
1161                         kfree(tbl);
1162                         goto __unlock;
1163                 }
1164                 tbl->index = idx;
1165                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1166                         kfree(tbl->name);
1167                         kfree(tbl);
1168                 }
1169         __unlock:
1170                 mutex_unlock(&mixer->reg_mutex);
1171         }
1172 }
1173
1174 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1175 {
1176         struct snd_info_entry *entry;
1177
1178         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1179                                            mixer->card->proc_root);
1180         if (! entry)
1181                 return;
1182         entry->content = SNDRV_INFO_CONTENT_TEXT;
1183         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1184         entry->c.text.read = snd_mixer_oss_proc_read;
1185         entry->c.text.write = snd_mixer_oss_proc_write;
1186         entry->private_data = mixer;
1187         if (snd_info_register(entry) < 0) {
1188                 snd_info_free_entry(entry);
1189                 entry = NULL;
1190         }
1191         mixer->proc_entry = entry;
1192 }
1193
1194 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1195 {
1196         snd_info_free_entry(mixer->proc_entry);
1197         mixer->proc_entry = NULL;
1198 }
1199 #else /* !CONFIG_PROC_FS */
1200 #define snd_mixer_oss_proc_init(mix)
1201 #define snd_mixer_oss_proc_done(mix)
1202 #endif /* CONFIG_PROC_FS */
1203
1204 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1205 {
1206         static struct snd_mixer_oss_assign_table table[] = {
1207                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1208                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1209                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1210                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1211                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1212                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1213                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1214                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1215                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1216                 { SOUND_MIXER_LINE,     "Line",                 0 },
1217                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1218                 { SOUND_MIXER_CD,       "CD",                   0 },
1219                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1220                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1221                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1222                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1223                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1224                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1225                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1226                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1227                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1228                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1229                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1230                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1231                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1232                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1233                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1234                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1235                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1236                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1237                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1238                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1239                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1240                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1241         };
1242         unsigned int idx;
1243
1244         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1245                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1246         if (mixer->mask_recsrc) {
1247                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1248                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1249         }
1250 }
1251
1252 /*
1253  *
1254  */
1255
1256 static int snd_mixer_oss_free1(void *private)
1257 {
1258         struct snd_mixer_oss *mixer = private;
1259         struct snd_card *card;
1260         int idx;
1261
1262         snd_assert(mixer != NULL, return -ENXIO);
1263         card = mixer->card;
1264         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1265         card->mixer_oss = NULL;
1266         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1267                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1268                 if (chn->private_free)
1269                         chn->private_free(chn);
1270         }
1271         kfree(mixer);
1272         return 0;
1273 }
1274
1275 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1276 {
1277         struct snd_mixer_oss *mixer;
1278
1279         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1280                 char name[128];
1281                 int idx, err;
1282
1283                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1284                 if (mixer == NULL)
1285                         return -ENOMEM;
1286                 mutex_init(&mixer->reg_mutex);
1287                 sprintf(name, "mixer%i%i", card->number, 0);
1288                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1289                                                    card, 0,
1290                                                    &snd_mixer_oss_f_ops, card,
1291                                                    name)) < 0) {
1292                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1293                                    card->number, 0);
1294                         kfree(mixer);
1295                         return err;
1296                 }
1297                 mixer->oss_dev_alloc = 1;
1298                 mixer->card = card;
1299                 if (*card->mixername)
1300                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1301                 else
1302                         strlcpy(mixer->name, name, sizeof(mixer->name));
1303 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1304                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1305                                       card->number,
1306                                       mixer->name);
1307 #endif
1308                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1309                         mixer->slots[idx].number = idx;
1310                 card->mixer_oss = mixer;
1311                 snd_mixer_oss_build(mixer);
1312                 snd_mixer_oss_proc_init(mixer);
1313         } else {
1314                 mixer = card->mixer_oss;
1315                 if (mixer == NULL)
1316                         return 0;
1317                 if (mixer->oss_dev_alloc) {
1318 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1319                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1320 #endif
1321                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1322                         mixer->oss_dev_alloc = 0;
1323                 }
1324                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1325                         return 0;
1326                 snd_mixer_oss_proc_done(mixer);
1327                 return snd_mixer_oss_free1(mixer);
1328         }
1329         return 0;
1330 }
1331
1332 static int __init alsa_mixer_oss_init(void)
1333 {
1334         int idx;
1335
1336         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1337         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1338                 if (snd_cards[idx])
1339                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1340         }
1341         return 0;
1342 }
1343
1344 static void __exit alsa_mixer_oss_exit(void)
1345 {
1346         int idx;
1347
1348         snd_mixer_oss_notify_callback = NULL;
1349         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1350                 if (snd_cards[idx])
1351                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1352         }
1353 }
1354
1355 module_init(alsa_mixer_oss_init)
1356 module_exit(alsa_mixer_oss_exit)
1357
1358 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);