sound/core/oss/mixer_oss.c

   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h>
  23 #include <linux/slab.h>
  24 #include <linux/time.h>
  25 #include <linux/string.h>
  26 #include <linux/module.h>
  27 #include <linux/compat.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@perex.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         err = nonseekable_open(inode, file);
  49         if (err < 0)
  50                 return err;
  51
  52         card = snd_lookup_oss_minor_data(iminor(inode),
  53                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  54         if (card == NULL)
  55                 return -ENODEV;
  56         if (card->mixer_oss == NULL) {
  57                 snd_card_unref(card);
  58                 return -ENODEV;
  59         }
  60         err = snd_card_file_add(card, file);
  61         if (err < 0) {
  62                 snd_card_unref(card);
  63                 return err;
  64         }
  65         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  66         if (fmixer == NULL) {
  67                 snd_card_file_remove(card, file);
  68                 snd_card_unref(card);
  69                 return -ENOMEM;
  70         }
  71         fmixer->card = card;
  72         fmixer->mixer = card->mixer_oss;
  73         file->private_data = fmixer;
  74         if (!try_module_get(card->module)) {
  75                 kfree(fmixer);
  76                 snd_card_file_remove(card, file);
  77                 snd_card_unref(card);
  78                 return -EFAULT;
  79         }
  80         snd_card_unref(card);
  81         return 0;
  82 }
  83
  84 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  85 {
  86         struct snd_mixer_oss_file *fmixer;
  87
  88         if (file->private_data) {
  89                 fmixer = file->private_data;
  90                 module_put(fmixer->card->module);
  91                 snd_card_file_remove(fmixer->card, file);
  92                 kfree(fmixer);
  93         }
  94         return 0;
  95 }
  96
  97 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  98                               mixer_info __user *_info)
  99 {
 100         struct snd_card *card = fmixer->card;
 101         struct snd_mixer_oss *mixer = fmixer->mixer;
 102         struct mixer_info info;
 103
 104         memset(&info, 0, sizeof(info));
 105         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 106         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 107         info.modify_counter = card->mixer_oss_change_count;
 108         if (copy_to_user(_info, &info, sizeof(info)))
 109                 return -EFAULT;
 110         return 0;
 111 }
 112
 113 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 114                                        _old_mixer_info __user *_info)
 115 {
 116         struct snd_card *card = fmixer->card;
 117         struct snd_mixer_oss *mixer = fmixer->mixer;
 118         _old_mixer_info info;
 119
 120         memset(&info, 0, sizeof(info));
 121         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 122         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 123         if (copy_to_user(_info, &info, sizeof(info)))
 124                 return -EFAULT;
 125         return 0;
 126 }
 127
 128 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 129 {
 130         struct snd_mixer_oss *mixer = fmixer->mixer;
 131         int result = 0;
 132
 133         if (mixer == NULL)
 134                 return -EIO;
 135         if (mixer->get_recsrc && mixer->put_recsrc)
 136                 result |= SOUND_CAP_EXCL_INPUT;
 137         return result;
 138 }
 139
 140 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 141 {
 142         struct snd_mixer_oss *mixer = fmixer->mixer;
 143         struct snd_mixer_oss_slot *pslot;
 144         int result = 0, chn;
 145
 146         if (mixer == NULL)
 147                 return -EIO;
 148         mutex_lock(&mixer->reg_mutex);
 149         for (chn = 0; chn < 31; chn++) {
 150                 pslot = &mixer->slots[chn];
 151                 if (pslot->put_volume || pslot->put_recsrc)
 152                         result |= 1 << chn;
 153         }
 154         mutex_unlock(&mixer->reg_mutex);
 155         return result;
 156 }
 157
 158 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 159 {
 160         struct snd_mixer_oss *mixer = fmixer->mixer;
 161         struct snd_mixer_oss_slot *pslot;
 162         int result = 0, chn;
 163
 164         if (mixer == NULL)
 165                 return -EIO;
 166         mutex_lock(&mixer->reg_mutex);
 167         for (chn = 0; chn < 31; chn++) {
 168                 pslot = &mixer->slots[chn];
 169                 if (pslot->put_volume && pslot->stereo)
 170                         result |= 1 << chn;
 171         }
 172         mutex_unlock(&mixer->reg_mutex);
 173         return result;
 174 }
 175
 176 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 177 {
 178         struct snd_mixer_oss *mixer = fmixer->mixer;
 179         int result = 0;
 180
 181         if (mixer == NULL)
 182                 return -EIO;
 183         mutex_lock(&mixer->reg_mutex);
 184         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 185                 result = mixer->mask_recsrc;
 186         } else {
 187                 struct snd_mixer_oss_slot *pslot;
 188                 int chn;
 189                 for (chn = 0; chn < 31; chn++) {
 190                         pslot = &mixer->slots[chn];
 191                         if (pslot->put_recsrc)
 192                                 result |= 1 << chn;
 193                 }
 194         }
 195         mutex_unlock(&mixer->reg_mutex);
 196         return result;
 197 }
 198
 199 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 200 {
 201         struct snd_mixer_oss *mixer = fmixer->mixer;
 202         int result = 0;
 203
 204         if (mixer == NULL)
 205                 return -EIO;
 206         mutex_lock(&mixer->reg_mutex);
 207         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 208                 unsigned int index;
 209                 result = mixer->get_recsrc(fmixer, &index);
 210                 if (result < 0)
 211                         goto unlock;
 212                 result = 1 << index;
 213         } else {
 214                 struct snd_mixer_oss_slot *pslot;
 215                 int chn;
 216                 for (chn = 0; chn < 31; chn++) {
 217                         pslot = &mixer->slots[chn];
 218                         if (pslot->get_recsrc) {
 219                                 int active = 0;
 220                                 pslot->get_recsrc(fmixer, pslot, &active);
 221                                 if (active)
 222                                         result |= 1 << chn;
 223                         }
 224                 }
 225         }
 226         mixer->oss_recsrc = result;
 227  unlock:
 228         mutex_unlock(&mixer->reg_mutex);
 229         return result;
 230 }
 231
 232 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 233 {
 234         struct snd_mixer_oss *mixer = fmixer->mixer;
 235         struct snd_mixer_oss_slot *pslot;
 236         int chn, active;
 237         unsigned int index;
 238         int result = 0;
 239
 240         if (mixer == NULL)
 241                 return -EIO;
 242         mutex_lock(&mixer->reg_mutex);
 243         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 244                 if (recsrc & ~mixer->oss_recsrc)
 245                         recsrc &= ~mixer->oss_recsrc;
 246                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 247                 mixer->get_recsrc(fmixer, &index);
 248                 result = 1 << index;
 249         }
 250         for (chn = 0; chn < 31; chn++) {
 251                 pslot = &mixer->slots[chn];
 252                 if (pslot->put_recsrc) {
 253                         active = (recsrc & (1 << chn)) ? 1 : 0;
 254                         pslot->put_recsrc(fmixer, pslot, active);
 255                 }
 256         }
 257         if (! result) {
 258                 for (chn = 0; chn < 31; chn++) {
 259                         pslot = &mixer->slots[chn];
 260                         if (pslot->get_recsrc) {
 261                                 active = 0;
 262                                 pslot->get_recsrc(fmixer, pslot, &active);
 263                                 if (active)
 264                                         result |= 1 << chn;
 265                         }
 266                 }
 267         }
 268         mutex_unlock(&mixer->reg_mutex);
 269         return result;
 270 }
 271
 272 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 273 {
 274         struct snd_mixer_oss *mixer = fmixer->mixer;
 275         struct snd_mixer_oss_slot *pslot;
 276         int result = 0, left, right;
 277
 278         if (mixer == NULL || slot > 30)
 279                 return -EIO;
 280         mutex_lock(&mixer->reg_mutex);
 281         pslot = &mixer->slots[slot];
 282         left = pslot->volume[0];
 283         right = pslot->volume[1];
 284         if (pslot->get_volume)
 285                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 286         if (!pslot->stereo)
 287                 right = left;
 288         if (snd_BUG_ON(left < 0 || left > 100)) {
 289                 result = -EIO;
 290                 goto unlock;
 291         }
 292         if (snd_BUG_ON(right < 0 || right > 100)) {
 293                 result = -EIO;
 294                 goto unlock;
 295         }
 296         if (result >= 0) {
 297                 pslot->volume[0] = left;
 298                 pslot->volume[1] = right;
 299                 result = (left & 0xff) | ((right & 0xff) << 8);
 300         }
 301  unlock:
 302         mutex_unlock(&mixer->reg_mutex);
 303         return result;
 304 }
 305
 306 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 307                                     int slot, int volume)
 308 {
 309         struct snd_mixer_oss *mixer = fmixer->mixer;
 310         struct snd_mixer_oss_slot *pslot;
 311         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 312
 313         if (mixer == NULL || slot > 30)
 314                 return -EIO;
 315         mutex_lock(&mixer->reg_mutex);
 316         pslot = &mixer->slots[slot];
 317         if (left > 100)
 318                 left = 100;
 319         if (right > 100)
 320                 right = 100;
 321         if (!pslot->stereo)
 322                 right = left;
 323         if (pslot->put_volume)
 324                 result = pslot->put_volume(fmixer, pslot, left, right);
 325         if (result < 0)
 326                 goto unlock;
 327         pslot->volume[0] = left;
 328         pslot->volume[1] = right;
 329         result = (left & 0xff) | ((right & 0xff) << 8);
 330  unlock:
 331         mutex_unlock(&mixer->reg_mutex);
 332         return result;
 333 }
 334
 335 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 336 {
 337         void __user *argp = (void __user *)arg;
 338         int __user *p = argp;
 339         int tmp;
 340
 341         if (snd_BUG_ON(!fmixer))
 342                 return -ENXIO;
 343         if (((cmd >> 8) & 0xff) == 'M') {
 344                 switch (cmd) {
 345                 case SOUND_MIXER_INFO:
 346                         return snd_mixer_oss_info(fmixer, argp);
 347                 case SOUND_OLD_MIXER_INFO:
 348                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 349                 case SOUND_MIXER_WRITE_RECSRC:
 350                         if (get_user(tmp, p))
 351                                 return -EFAULT;
 352                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 353                         if (tmp < 0)
 354                                 return tmp;
 355                         return put_user(tmp, p);
 356                 case OSS_GETVERSION:
 357                         return put_user(SNDRV_OSS_VERSION, p);
 358                 case OSS_ALSAEMULVER:
 359                         return put_user(1, p);
 360                 case SOUND_MIXER_READ_DEVMASK:
 361                         tmp = snd_mixer_oss_devmask(fmixer);
 362                         if (tmp < 0)
 363                                 return tmp;
 364                         return put_user(tmp, p);
 365                 case SOUND_MIXER_READ_STEREODEVS:
 366                         tmp = snd_mixer_oss_stereodevs(fmixer);
 367                         if (tmp < 0)
 368                                 return tmp;
 369                         return put_user(tmp, p);
 370                 case SOUND_MIXER_READ_RECMASK:
 371                         tmp = snd_mixer_oss_recmask(fmixer);
 372                         if (tmp < 0)
 373                                 return tmp;
 374                         return put_user(tmp, p);
 375                 case SOUND_MIXER_READ_CAPS:
 376                         tmp = snd_mixer_oss_caps(fmixer);
 377                         if (tmp < 0)
 378                                 return tmp;
 379                         return put_user(tmp, p);
 380                 case SOUND_MIXER_READ_RECSRC:
 381                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 382                         if (tmp < 0)
 383                                 return tmp;
 384                         return put_user(tmp, p);
 385                 }
 386         }
 387         if (cmd & SIOC_IN) {
 388                 if (get_user(tmp, p))
 389                         return -EFAULT;
 390                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 391                 if (tmp < 0)
 392                         return tmp;
 393                 return put_user(tmp, p);
 394         } else if (cmd & SIOC_OUT) {
 395                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 396                 if (tmp < 0)
 397                         return tmp;
 398                 return put_user(tmp, p);
 399         }
 400         return -ENXIO;
 401 }
 402
 403 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 404 {
 405         return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 406 }
 407
 408 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 409 {
 410         struct snd_mixer_oss_file fmixer;
 411
 412         if (snd_BUG_ON(!card))
 413                 return -ENXIO;
 414         if (card->mixer_oss == NULL)
 415                 return -ENXIO;
 416         memset(&fmixer, 0, sizeof(fmixer));
 417         fmixer.card = card;
 418         fmixer.mixer = card->mixer_oss;
 419         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 420 }
 421
 422 #ifdef CONFIG_COMPAT
 423 /* all compatible */
 424 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
 425                                        unsigned long arg)
 426 {
 427         return snd_mixer_oss_ioctl1(file->private_data, cmd,
 428                                     (unsigned long)compat_ptr(arg));
 429 }
 430 #else
 431 #define snd_mixer_oss_ioctl_compat      NULL
 432 #endif
 433
 434 /*
 435  *  REGISTRATION PART
 436  */
 437
 438 static const struct file_operations snd_mixer_oss_f_ops =
 439 {
 440         .owner =        THIS_MODULE,
 441         .open =         snd_mixer_oss_open,
 442         .release =      snd_mixer_oss_release,
 443         .llseek =       no_llseek,
 444         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 445         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 446 };
 447
 448 /*
 449  *  utilities
 450  */
 451
 452 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 453 {
 454         long orange = omax - omin, nrange = nmax - nmin;
 455
 456         if (orange == 0)
 457                 return 0;
 458         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 459 }
 460
 461 /* convert from alsa native to oss values (0-100) */
 462 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 463 {
 464         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 465                 return *old;
 466         return snd_mixer_oss_conv(val, min, max, 0, 100);
 467 }
 468
 469 /* convert from oss to alsa native values */
 470 static long snd_mixer_oss_conv2(long val, long min, long max)
 471 {
 472         return snd_mixer_oss_conv(val, 0, 100, min, max);
 473 }
 474
 475 #if 0
 476 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 477 {
 478         struct snd_mixer_oss *mixer = card->mixer_oss;
 479         if (mixer)
 480                 mixer->mask_recsrc |= 1 << slot;
 481 }
 482
 483 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 484 {
 485         struct snd_mixer_oss *mixer = card->mixer_oss;
 486         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 487                 return 1;
 488         return 0;
 489 }
 490 #endif
 491
 492 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 493
 494 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 495 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 496 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 497 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 498 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 499 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 500 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 501 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 502 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 503 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 504 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 505
 506 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 507
 508 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 509 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 510 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 511 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 512 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 513 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 514 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 515 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 516 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 517 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 518 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 519
 520 struct slot {
 521         unsigned int signature;
 522         unsigned int present;
 523         unsigned int channels;
 524         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 525         unsigned int capture_item;
 526         struct snd_mixer_oss_assign_table *assigned;
 527         unsigned int allocated: 1;
 528 };
 529
 530 #define ID_UNKNOWN      ((unsigned int)-1)
 531
 532 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 533 {
 534         struct snd_card *card = mixer->card;
 535         struct snd_ctl_elem_id id;
 536
 537         memset(&id, 0, sizeof(id));
 538         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 539         strlcpy(id.name, name, sizeof(id.name));
 540         id.index = index;
 541         return snd_ctl_find_id(card, &id);
 542 }
 543
 544 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 545                                           struct snd_mixer_oss_slot *pslot,
 546                                           unsigned int numid,
 547                                           int *left, int *right)
 548 {
 549         struct snd_ctl_elem_info *uinfo;
 550         struct snd_ctl_elem_value *uctl;
 551         struct snd_kcontrol *kctl;
 552         struct snd_card *card = fmixer->card;
 553
 554         if (numid == ID_UNKNOWN)
 555                 return;
 556         down_read(&card->controls_rwsem);
 557         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 558                 up_read(&card->controls_rwsem);
 559                 return;
 560         }
 561         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 562         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 563         if (uinfo == NULL || uctl == NULL)
 564                 goto __unalloc;
 565         if (kctl->info(kctl, uinfo))
 566                 goto __unalloc;
 567         if (kctl->get(kctl, uctl))
 568                 goto __unalloc;
 569         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 570             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 571                 goto __unalloc;
 572         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 573         if (uinfo->count > 1)
 574                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 575       __unalloc:
 576         up_read(&card->controls_rwsem);
 577         kfree(uctl);
 578         kfree(uinfo);
 579 }
 580
 581 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 582                                          struct snd_mixer_oss_slot *pslot,
 583                                          unsigned int numid,
 584                                          int *left, int *right,
 585                                          int route)
 586 {
 587         struct snd_ctl_elem_info *uinfo;
 588         struct snd_ctl_elem_value *uctl;
 589         struct snd_kcontrol *kctl;
 590         struct snd_card *card = fmixer->card;
 591
 592         if (numid == ID_UNKNOWN)
 593                 return;
 594         down_read(&card->controls_rwsem);
 595         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 596                 up_read(&card->controls_rwsem);
 597                 return;
 598         }
 599         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 600         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 601         if (uinfo == NULL || uctl == NULL)
 602                 goto __unalloc;
 603         if (kctl->info(kctl, uinfo))
 604                 goto __unalloc;
 605         if (kctl->get(kctl, uctl))
 606                 goto __unalloc;
 607         if (!uctl->value.integer.value[0]) {
 608                 *left = 0;
 609                 if (uinfo->count == 1)
 610                         *right = 0;
 611         }
 612         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 613                 *right = 0;
 614       __unalloc:
 615         up_read(&card->controls_rwsem);
 616         kfree(uctl);
 617         kfree(uinfo);
 618 }
 619
 620 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 621                                      struct snd_mixer_oss_slot *pslot,
 622                                      int *left, int *right)
 623 {
 624         struct slot *slot = pslot->private_data;
 625
 626         *left = *right = 100;
 627         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 628                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 629         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 630                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 631         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 632                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 633         }
 634         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 635                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 636         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 637                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 638         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 639                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 640         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 641                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 642         }
 643         return 0;
 644 }
 645
 646 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 647                                           struct snd_mixer_oss_slot *pslot,
 648                                           unsigned int numid,
 649                                           int left, int right)
 650 {
 651         struct snd_ctl_elem_info *uinfo;
 652         struct snd_ctl_elem_value *uctl;
 653         struct snd_kcontrol *kctl;
 654         struct snd_card *card = fmixer->card;
 655         int res;
 656
 657         if (numid == ID_UNKNOWN)
 658                 return;
 659         down_read(&card->controls_rwsem);
 660         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 661                 up_read(&card->controls_rwsem);
 662                 return;
 663         }
 664         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 665         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 666         if (uinfo == NULL || uctl == NULL)
 667                 goto __unalloc;
 668         if (kctl->info(kctl, uinfo))
 669                 goto __unalloc;
 670         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 671             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 672                 goto __unalloc;
 673         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 674         if (uinfo->count > 1)
 675                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 676         if ((res = kctl->put(kctl, uctl)) < 0)
 677                 goto __unalloc;
 678         if (res > 0)
 679                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 680       __unalloc:
 681         up_read(&card->controls_rwsem);
 682         kfree(uctl);
 683         kfree(uinfo);
 684 }
 685
 686 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 687                                          struct snd_mixer_oss_slot *pslot,
 688                                          unsigned int numid,
 689                                          int left, int right,
 690                                          int route)
 691 {
 692         struct snd_ctl_elem_info *uinfo;
 693         struct snd_ctl_elem_value *uctl;
 694         struct snd_kcontrol *kctl;
 695         struct snd_card *card = fmixer->card;
 696         int res;
 697
 698         if (numid == ID_UNKNOWN)
 699                 return;
 700         down_read(&card->controls_rwsem);
 701         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 702                 up_read(&card->controls_rwsem);
 703                 return;
 704         }
 705         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 706         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 707         if (uinfo == NULL || uctl == NULL)
 708                 goto __unalloc;
 709         if (kctl->info(kctl, uinfo))
 710                 goto __unalloc;
 711         if (uinfo->count > 1) {
 712                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 713                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 714                 if (route) {
 715                         uctl->value.integer.value[1] =
 716                         uctl->value.integer.value[2] = 0;
 717                 }
 718         } else {
 719                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 720         }
 721         if ((res = kctl->put(kctl, uctl)) < 0)
 722                 goto __unalloc;
 723         if (res > 0)
 724                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 725       __unalloc:
 726         up_read(&card->controls_rwsem);
 727         kfree(uctl);
 728         kfree(uinfo);
 729 }
 730
 731 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 732                                      struct snd_mixer_oss_slot *pslot,
 733                                      int left, int right)
 734 {
 735         struct slot *slot = pslot->private_data;
 736
 737         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 738                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 739                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 740                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 741         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 742                 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 743                         slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 744         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 745                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 746         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 747                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 748         }
 749         if (left || right) {
 750                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 751                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 752                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
 753                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 754                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 755                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 756                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 757                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 758                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
 759                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 760                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 761                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 762         } else {
 763                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 764                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 765                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 766                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 767                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 768                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 769                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 770                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 771                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 772                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 773                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 774                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 775                 }
 776         }
 777         return 0;
 778 }
 779
 780 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 781                                         struct snd_mixer_oss_slot *pslot,
 782                                         int *active)
 783 {
 784         struct slot *slot = pslot->private_data;
 785         int left, right;
 786
 787         left = right = 1;
 788         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 789         *active = (left || right) ? 1 : 0;
 790         return 0;
 791 }
 792
 793 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 794                                            struct snd_mixer_oss_slot *pslot,
 795                                            int *active)
 796 {
 797         struct slot *slot = pslot->private_data;
 798         int left, right;
 799
 800         left = right = 1;
 801         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 802         *active = (left || right) ? 1 : 0;
 803         return 0;
 804 }
 805
 806 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 807                                         struct snd_mixer_oss_slot *pslot,
 808                                         int active)
 809 {
 810         struct slot *slot = pslot->private_data;
 811
 812         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 813         return 0;
 814 }
 815
 816 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 817                                            struct snd_mixer_oss_slot *pslot,
 818                                            int active)
 819 {
 820         struct slot *slot = pslot->private_data;
 821
 822         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 823         return 0;
 824 }
 825
 826 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 827 {
 828         struct snd_card *card = fmixer->card;
 829         struct snd_mixer_oss *mixer = fmixer->mixer;
 830         struct snd_kcontrol *kctl;
 831         struct snd_mixer_oss_slot *pslot;
 832         struct slot *slot;
 833         struct snd_ctl_elem_info *uinfo;
 834         struct snd_ctl_elem_value *uctl;
 835         int err, idx;
 836
 837         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 838         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 839         if (uinfo == NULL || uctl == NULL) {
 840                 err = -ENOMEM;
 841                 goto __free_only;
 842         }
 843         down_read(&card->controls_rwsem);
 844         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 845         if (! kctl) {
 846                 err = -ENOENT;
 847                 goto __unlock;
 848         }
 849         if ((err = kctl->info(kctl, uinfo)) < 0)
 850                 goto __unlock;
 851         if ((err = kctl->get(kctl, uctl)) < 0)
 852                 goto __unlock;
 853         for (idx = 0; idx < 32; idx++) {
 854                 if (!(mixer->mask_recsrc & (1 << idx)))
 855                         continue;
 856                 pslot = &mixer->slots[idx];
 857                 slot = pslot->private_data;
 858                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 859                         continue;
 860                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 861                         continue;
 862                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 863                         *active_index = idx;
 864                         break;
 865                 }
 866         }
 867         err = 0;
 868       __unlock:
 869         up_read(&card->controls_rwsem);
 870       __free_only:
 871         kfree(uctl);
 872         kfree(uinfo);
 873         return err;
 874 }
 875
 876 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 877 {
 878         struct snd_card *card = fmixer->card;
 879         struct snd_mixer_oss *mixer = fmixer->mixer;
 880         struct snd_kcontrol *kctl;
 881         struct snd_mixer_oss_slot *pslot;
 882         struct slot *slot = NULL;
 883         struct snd_ctl_elem_info *uinfo;
 884         struct snd_ctl_elem_value *uctl;
 885         int err;
 886         unsigned int idx;
 887
 888         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 889         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 890         if (uinfo == NULL || uctl == NULL) {
 891                 err = -ENOMEM;
 892                 goto __free_only;
 893         }
 894         down_read(&card->controls_rwsem);
 895         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 896         if (! kctl) {
 897                 err = -ENOENT;
 898                 goto __unlock;
 899         }
 900         if ((err = kctl->info(kctl, uinfo)) < 0)
 901                 goto __unlock;
 902         for (idx = 0; idx < 32; idx++) {
 903                 if (!(mixer->mask_recsrc & (1 << idx)))
 904                         continue;
 905                 pslot = &mixer->slots[idx];
 906                 slot = pslot->private_data;
 907                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 908                         continue;
 909                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 910                         continue;
 911                 if (idx == active_index)
 912                         break;
 913                 slot = NULL;
 914         }
 915         if (! slot)
 916                 goto __unlock;
 917         for (idx = 0; idx < uinfo->count; idx++)
 918                 uctl->value.enumerated.item[idx] = slot->capture_item;
 919         err = kctl->put(kctl, uctl);
 920         if (err > 0)
 921                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 922         err = 0;
 923       __unlock:
 924         up_read(&card->controls_rwsem);
 925       __free_only:
 926         kfree(uctl);
 927         kfree(uinfo);
 928         return err;
 929 }
 930
 931 struct snd_mixer_oss_assign_table {
 932         int oss_id;
 933         const char *name;
 934         int index;
 935 };
 936
 937 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 938 {
 939         struct snd_ctl_elem_info *info;
 940         struct snd_kcontrol *kcontrol;
 941         struct snd_card *card = mixer->card;
 942         int err;
 943
 944         down_read(&card->controls_rwsem);
 945         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 946         if (kcontrol == NULL) {
 947                 up_read(&card->controls_rwsem);
 948                 return 0;
 949         }
 950         info = kmalloc(sizeof(*info), GFP_KERNEL);
 951         if (! info) {
 952                 up_read(&card->controls_rwsem);
 953                 return -ENOMEM;
 954         }
 955         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 956                 up_read(&card->controls_rwsem);
 957                 kfree(info);
 958                 return err;
 959         }
 960         slot->numid[item] = kcontrol->id.numid;
 961         up_read(&card->controls_rwsem);
 962         if (info->count > slot->channels)
 963                 slot->channels = info->count;
 964         slot->present |= 1 << item;
 965         kfree(info);
 966         return 0;
 967 }
 968
 969 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 970 {
 971         struct slot *p = chn->private_data;
 972         if (p) {
 973                 if (p->allocated && p->assigned) {
 974                         kfree(p->assigned->name);
 975                         kfree(p->assigned);
 976                 }
 977                 kfree(p);
 978         }
 979 }
 980
 981 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 982 {
 983         int idx = rslot->number; /* remember this */
 984         if (rslot->private_free)
 985                 rslot->private_free(rslot);
 986         memset(rslot, 0, sizeof(*rslot));
 987         rslot->number = idx;
 988 }
 989
 990 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 991    snd_mixer_oss_build_input! */
 992 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 993                                         struct snd_mixer_oss_assign_table *ptr,
 994                                         struct slot *slot)
 995 {
 996         char str[64];
 997         int err;
 998
 999         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
1000                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
1001         if (err)
1002                 return err;
1003         sprintf(str, "%s Switch", ptr->name);
1004         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1005                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
1006         if (err)
1007                 return err;
1008         sprintf(str, "%s Route", ptr->name);
1009         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1010                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
1011         if (err)
1012                 return err;
1013         sprintf(str, "%s Volume", ptr->name);
1014         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1015                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
1016         if (err)
1017                 return err;
1018         sprintf(str, "%s Playback Switch", ptr->name);
1019         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1020                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
1021         if (err)
1022                 return err;
1023         sprintf(str, "%s Playback Route", ptr->name);
1024         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1025                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
1026         if (err)
1027                 return err;
1028         sprintf(str, "%s Playback Volume", ptr->name);
1029         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1030                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
1031         if (err)
1032                 return err;
1033         sprintf(str, "%s Capture Switch", ptr->name);
1034         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1035                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
1036         if (err)
1037                 return err;
1038         sprintf(str, "%s Capture Route", ptr->name);
1039         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1040                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
1041         if (err)
1042                 return err;
1043         sprintf(str, "%s Capture Volume", ptr->name);
1044         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1045                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
1046         if (err)
1047                 return err;
1048
1049         return 0;
1050 }
1051
1052 /*
1053  * build an OSS mixer element.
1054  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1055  * when replace_old = 1, the old entry is replaced with the new one.
1056  */
1057 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)
1058 {
1059         struct slot slot;
1060         struct slot *pslot;
1061         struct snd_kcontrol *kctl;
1062         struct snd_mixer_oss_slot *rslot;
1063         char str[64];
1064
1065         /* check if already assigned */
1066         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1067                 return 0;
1068
1069         memset(&slot, 0, sizeof(slot));
1070         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1071         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1072                 return 0;
1073         down_read(&mixer->card->controls_rwsem);
1074         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1075                 struct snd_ctl_elem_info *uinfo;
1076
1077                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1078                 if (! uinfo) {
1079                         up_read(&mixer->card->controls_rwsem);
1080                         return -ENOMEM;
1081                 }
1082
1083                 if (kctl->info(kctl, uinfo)) {
1084                         up_read(&mixer->card->controls_rwsem);
1085                         kfree(uinfo);
1086                         return 0;
1087                 }
1088                 strcpy(str, ptr->name);
1089                 if (!strcmp(str, "Master"))
1090                         strcpy(str, "Mix");
1091                 if (!strcmp(str, "Master Mono"))
1092                         strcpy(str, "Mix Mono");
1093                 slot.capture_item = 0;
1094                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1095                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1096                 } else {
1097                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1098                                 uinfo->value.enumerated.item = slot.capture_item;
1099                                 if (kctl->info(kctl, uinfo)) {
1100                                         up_read(&mixer->card->controls_rwsem);
1101                                         kfree(uinfo);
1102                                         return 0;
1103                                 }
1104                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1105                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1106                                         break;
1107                                 }
1108                         }
1109                 }
1110                 kfree(uinfo);
1111         }
1112         up_read(&mixer->card->controls_rwsem);
1113         if (slot.present != 0) {
1114                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1115                 if (! pslot)
1116                         return -ENOMEM;
1117                 *pslot = slot;
1118                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1119                 pslot->assigned = ptr;
1120                 pslot->allocated = ptr_allocated;
1121                 rslot = &mixer->slots[ptr->oss_id];
1122                 mixer_slot_clear(rslot);
1123                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1124                 rslot->get_volume = snd_mixer_oss_get_volume1;
1125                 rslot->put_volume = snd_mixer_oss_put_volume1;
1126                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1127                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1128                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1129                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1130                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1131                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1132                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1133                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1134                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1135                 }
1136                 rslot->private_data = pslot;
1137                 rslot->private_free = snd_mixer_oss_slot_free;
1138                 return 1;
1139         }
1140         return 0;
1141 }
1142
1143 #ifdef CONFIG_SND_PROC_FS
1144 /*
1145  */
1146 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1147 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1148         MIXER_VOL(VOLUME),
1149         MIXER_VOL(BASS),
1150         MIXER_VOL(TREBLE),
1151         MIXER_VOL(SYNTH),
1152         MIXER_VOL(PCM),
1153         MIXER_VOL(SPEAKER),
1154         MIXER_VOL(LINE),
1155         MIXER_VOL(MIC),
1156         MIXER_VOL(CD),
1157         MIXER_VOL(IMIX),
1158         MIXER_VOL(ALTPCM),
1159         MIXER_VOL(RECLEV),
1160         MIXER_VOL(IGAIN),
1161         MIXER_VOL(OGAIN),
1162         MIXER_VOL(LINE1),
1163         MIXER_VOL(LINE2),
1164         MIXER_VOL(LINE3),
1165         MIXER_VOL(DIGITAL1),
1166         MIXER_VOL(DIGITAL2),
1167         MIXER_VOL(DIGITAL3),
1168         MIXER_VOL(PHONEIN),
1169         MIXER_VOL(PHONEOUT),
1170         MIXER_VOL(VIDEO),
1171         MIXER_VOL(RADIO),
1172         MIXER_VOL(MONITOR),
1173 };
1174
1175 /*
1176  *  /proc interface
1177  */
1178
1179 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1180                                     struct snd_info_buffer *buffer)
1181 {
1182         struct snd_mixer_oss *mixer = entry->private_data;
1183         int i;
1184
1185         mutex_lock(&mixer->reg_mutex);
1186         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1187                 struct slot *p;
1188
1189                 if (! oss_mixer_names[i])
1190                         continue;
1191                 p = (struct slot *)mixer->slots[i].private_data;
1192                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1193                 if (p && p->assigned)
1194                         snd_iprintf(buffer, "\"%s\" %d\n",
1195                                     p->assigned->name,
1196                                     p->assigned->index);
1197                 else
1198                         snd_iprintf(buffer, "\"\" 0\n");
1199         }
1200         mutex_unlock(&mixer->reg_mutex);
1201 }
1202
1203 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1204                                      struct snd_info_buffer *buffer)
1205 {
1206         struct snd_mixer_oss *mixer = entry->private_data;
1207         char line[128], str[32], idxstr[16];
1208         const char *cptr;
1209         unsigned int idx;
1210         int ch;
1211         struct snd_mixer_oss_assign_table *tbl;
1212         struct slot *slot;
1213
1214         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1215                 cptr = snd_info_get_str(str, line, sizeof(str));
1216                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1217                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1218                                 break;
1219                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1220                         pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1221                                str);
1222                         continue;
1223                 }
1224                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1225                 if (! *str) {
1226                         /* remove the entry */
1227                         mutex_lock(&mixer->reg_mutex);
1228                         mixer_slot_clear(&mixer->slots[ch]);
1229                         mutex_unlock(&mixer->reg_mutex);
1230                         continue;
1231                 }
1232                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1233                 idx = simple_strtoul(idxstr, NULL, 10);
1234                 if (idx >= 0x4000) { /* too big */
1235                         pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1236                         continue;
1237                 }
1238                 mutex_lock(&mixer->reg_mutex);
1239                 slot = (struct slot *)mixer->slots[ch].private_data;
1240                 if (slot && slot->assigned &&
1241                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1242                         /* not changed */
1243                         goto __unlock;
1244                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1245                 if (!tbl)
1246                         goto __unlock;
1247                 tbl->oss_id = ch;
1248                 tbl->name = kstrdup(str, GFP_KERNEL);
1249                 if (! tbl->name) {
1250                         kfree(tbl);
1251                         goto __unlock;
1252                 }
1253                 tbl->index = idx;
1254                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1255                         kfree(tbl->name);
1256                         kfree(tbl);
1257                 }
1258         __unlock:
1259                 mutex_unlock(&mixer->reg_mutex);
1260         }
1261 }
1262
1263 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1264 {
1265         struct snd_info_entry *entry;
1266
1267         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1268                                            mixer->card->proc_root);
1269         if (! entry)
1270                 return;
1271         entry->content = SNDRV_INFO_CONTENT_TEXT;
1272         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1273         entry->c.text.read = snd_mixer_oss_proc_read;
1274         entry->c.text.write = snd_mixer_oss_proc_write;
1275         entry->private_data = mixer;
1276         if (snd_info_register(entry) < 0) {
1277                 snd_info_free_entry(entry);
1278                 entry = NULL;
1279         }
1280         mixer->proc_entry = entry;
1281 }
1282
1283 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1284 {
1285         snd_info_free_entry(mixer->proc_entry);
1286         mixer->proc_entry = NULL;
1287 }
1288 #else /* !CONFIG_SND_PROC_FS */
1289 #define snd_mixer_oss_proc_init(mix)
1290 #define snd_mixer_oss_proc_done(mix)
1291 #endif /* CONFIG_SND_PROC_FS */
1292
1293 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1294 {
1295         static struct snd_mixer_oss_assign_table table[] = {
1296                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1297                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1298                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1299                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1300                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1301                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1302                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1303                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1304                 { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1305                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1306                 { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1307                 { SOUND_MIXER_LINE,     "Line",                 0 },
1308                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1309                 { SOUND_MIXER_CD,       "CD",                   0 },
1310                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1311                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1312                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1313                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1314                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1315                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1316                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1317                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1318                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1319                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1320                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1321                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1322                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1323                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1324                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1325                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1326                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1327                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1328                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1329                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1330                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1331                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1332                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1333                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1334         };
1335         unsigned int idx;
1336
1337         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1338                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1339         if (mixer->mask_recsrc) {
1340                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1341                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1342         }
1343 }
1344
1345 /*
1346  *
1347  */
1348
1349 static int snd_mixer_oss_free1(void *private)
1350 {
1351         struct snd_mixer_oss *mixer = private;
1352         struct snd_card *card;
1353         int idx;
1354
1355         if (!mixer)
1356                 return 0;
1357         card = mixer->card;
1358         if (snd_BUG_ON(mixer != card->mixer_oss))
1359                 return -ENXIO;
1360         card->mixer_oss = NULL;
1361         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1362                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1363                 if (chn->private_free)
1364                         chn->private_free(chn);
1365         }
1366         kfree(mixer);
1367         return 0;
1368 }
1369
1370 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1371 {
1372         struct snd_mixer_oss *mixer;
1373
1374         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1375                 int idx, err;
1376
1377                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1378                 if (mixer == NULL)
1379                         return -ENOMEM;
1380                 mutex_init(&mixer->reg_mutex);
1381                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1382                                                    card, 0,
1383                                                    &snd_mixer_oss_f_ops, card)) < 0) {
1384                         dev_err(card->dev,
1385                                 "unable to register OSS mixer device %i:%i\n",
1386                                 card->number, 0);
1387                         kfree(mixer);
1388                         return err;
1389                 }
1390                 mixer->oss_dev_alloc = 1;
1391                 mixer->card = card;
1392                 if (*card->mixername)
1393                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1394                 else
1395                         snprintf(mixer->name, sizeof(mixer->name),
1396                                  "mixer%i", card->number);
1397 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1398                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1399                                       card->number,
1400                                       mixer->name);
1401 #endif
1402                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1403                         mixer->slots[idx].number = idx;
1404                 card->mixer_oss = mixer;
1405                 snd_mixer_oss_build(mixer);
1406                 snd_mixer_oss_proc_init(mixer);
1407         } else {
1408                 mixer = card->mixer_oss;
1409                 if (mixer == NULL)
1410                         return 0;
1411                 if (mixer->oss_dev_alloc) {
1412 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1413                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1414 #endif
1415                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1416                         mixer->oss_dev_alloc = 0;
1417                 }
1418                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1419                         return 0;
1420                 snd_mixer_oss_proc_done(mixer);
1421                 return snd_mixer_oss_free1(mixer);
1422         }
1423         return 0;
1424 }
1425
1426 static int __init alsa_mixer_oss_init(void)
1427 {
1428         int idx;
1429
1430         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1431         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1432                 if (snd_cards[idx])
1433                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1434         }
1435         return 0;
1436 }
1437
1438 static void __exit alsa_mixer_oss_exit(void)
1439 {
1440         int idx;
1441
1442         snd_mixer_oss_notify_callback = NULL;
1443         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1444                 if (snd_cards[idx])
1445                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1446         }
1447 }
1448
1449 module_init(alsa_mixer_oss_init)
1450 module_exit(alsa_mixer_oss_exit)
1451
1452 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);