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 <sound/core.h>
  28 #include <sound/minors.h>
  29 #include <sound/control.h>
  30 #include <sound/info.h>
  31 #include <sound/mixer_oss.h>
  32 #include <linux/soundcard.h>
  33
  34 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  35
  36 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  38 MODULE_LICENSE("GPL");
  39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  40
  41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  42 {
  43         struct snd_card *card;
  44         struct snd_mixer_oss_file *fmixer;
  45         int err;
  46
  47         err = nonseekable_open(inode, file);
  48         if (err < 0)
  49                 return err;
  50
  51         card = snd_lookup_oss_minor_data(iminor(inode),
  52                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  53         if (card == NULL)
  54                 return -ENODEV;
  55         if (card->mixer_oss == NULL) {
  56                 snd_card_unref(card);
  57                 return -ENODEV;
  58         }
  59         err = snd_card_file_add(card, file);
  60         if (err < 0) {
  61                 snd_card_unref(card);
  62                 return err;
  63         }
  64         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  65         if (fmixer == NULL) {
  66                 snd_card_file_remove(card, file);
  67                 snd_card_unref(card);
  68                 return -ENOMEM;
  69         }
  70         fmixer->card = card;
  71         fmixer->mixer = card->mixer_oss;
  72         file->private_data = fmixer;
  73         if (!try_module_get(card->module)) {
  74                 kfree(fmixer);
  75                 snd_card_file_remove(card, file);
  76                 snd_card_unref(card);
  77                 return -EFAULT;
  78         }
  79         snd_card_unref(card);
  80         return 0;
  81 }
  82
  83 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  84 {
  85         struct snd_mixer_oss_file *fmixer;
  86
  87         if (file->private_data) {
  88                 fmixer = file->private_data;
  89                 module_put(fmixer->card->module);
  90                 snd_card_file_remove(fmixer->card, file);
  91                 kfree(fmixer);
  92         }
  93         return 0;
  94 }
  95
  96 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  97                               mixer_info __user *_info)
  98 {
  99         struct snd_card *card = fmixer->card;
 100         struct snd_mixer_oss *mixer = fmixer->mixer;
 101         struct mixer_info info;
 102
 103         memset(&info, 0, sizeof(info));
 104         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 105         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 106         info.modify_counter = card->mixer_oss_change_count;
 107         if (copy_to_user(_info, &info, sizeof(info)))
 108                 return -EFAULT;
 109         return 0;
 110 }
 111
 112 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 113                                        _old_mixer_info __user *_info)
 114 {
 115         struct snd_card *card = fmixer->card;
 116         struct snd_mixer_oss *mixer = fmixer->mixer;
 117         _old_mixer_info info;
 118
 119         memset(&info, 0, sizeof(info));
 120         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 121         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 122         if (copy_to_user(_info, &info, sizeof(info)))
 123                 return -EFAULT;
 124         return 0;
 125 }
 126
 127 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 128 {
 129         struct snd_mixer_oss *mixer = fmixer->mixer;
 130         int result = 0;
 131
 132         if (mixer == NULL)
 133                 return -EIO;
 134         if (mixer->get_recsrc && mixer->put_recsrc)
 135                 result |= SOUND_CAP_EXCL_INPUT;
 136         return result;
 137 }
 138
 139 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 140 {
 141         struct snd_mixer_oss *mixer = fmixer->mixer;
 142         struct snd_mixer_oss_slot *pslot;
 143         int result = 0, chn;
 144
 145         if (mixer == NULL)
 146                 return -EIO;
 147         for (chn = 0; chn < 31; chn++) {
 148                 pslot = &mixer->slots[chn];
 149                 if (pslot->put_volume || pslot->put_recsrc)
 150                         result |= 1 << chn;
 151         }
 152         return result;
 153 }
 154
 155 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 156 {
 157         struct snd_mixer_oss *mixer = fmixer->mixer;
 158         struct snd_mixer_oss_slot *pslot;
 159         int result = 0, chn;
 160
 161         if (mixer == NULL)
 162                 return -EIO;
 163         for (chn = 0; chn < 31; chn++) {
 164                 pslot = &mixer->slots[chn];
 165                 if (pslot->put_volume && pslot->stereo)
 166                         result |= 1 << chn;
 167         }
 168         return result;
 169 }
 170
 171 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 172 {
 173         struct snd_mixer_oss *mixer = fmixer->mixer;
 174         int result = 0;
 175
 176         if (mixer == NULL)
 177                 return -EIO;
 178         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 179                 result = mixer->mask_recsrc;
 180         } else {
 181                 struct snd_mixer_oss_slot *pslot;
 182                 int chn;
 183                 for (chn = 0; chn < 31; chn++) {
 184                         pslot = &mixer->slots[chn];
 185                         if (pslot->put_recsrc)
 186                                 result |= 1 << chn;
 187                 }
 188         }
 189         return result;
 190 }
 191
 192 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 193 {
 194         struct snd_mixer_oss *mixer = fmixer->mixer;
 195         int result = 0;
 196
 197         if (mixer == NULL)
 198                 return -EIO;
 199         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 200                 int err;
 201                 unsigned int index;
 202                 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
 203                         return err;
 204                 result = 1 << index;
 205         } else {
 206                 struct snd_mixer_oss_slot *pslot;
 207                 int chn;
 208                 for (chn = 0; chn < 31; chn++) {
 209                         pslot = &mixer->slots[chn];
 210                         if (pslot->get_recsrc) {
 211                                 int active = 0;
 212                                 pslot->get_recsrc(fmixer, pslot, &active);
 213                                 if (active)
 214                                         result |= 1 << chn;
 215                         }
 216                 }
 217         }
 218         return mixer->oss_recsrc = result;
 219 }
 220
 221 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 222 {
 223         struct snd_mixer_oss *mixer = fmixer->mixer;
 224         struct snd_mixer_oss_slot *pslot;
 225         int chn, active;
 226         unsigned int index;
 227         int result = 0;
 228
 229         if (mixer == NULL)
 230                 return -EIO;
 231         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 232                 if (recsrc & ~mixer->oss_recsrc)
 233                         recsrc &= ~mixer->oss_recsrc;
 234                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 235                 mixer->get_recsrc(fmixer, &index);
 236                 result = 1 << index;
 237         }
 238         for (chn = 0; chn < 31; chn++) {
 239                 pslot = &mixer->slots[chn];
 240                 if (pslot->put_recsrc) {
 241                         active = (recsrc & (1 << chn)) ? 1 : 0;
 242                         pslot->put_recsrc(fmixer, pslot, active);
 243                 }
 244         }
 245         if (! result) {
 246                 for (chn = 0; chn < 31; chn++) {
 247                         pslot = &mixer->slots[chn];
 248                         if (pslot->get_recsrc) {
 249                                 active = 0;
 250                                 pslot->get_recsrc(fmixer, pslot, &active);
 251                                 if (active)
 252                                         result |= 1 << chn;
 253                         }
 254                 }
 255         }
 256         return result;
 257 }
 258
 259 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 260 {
 261         struct snd_mixer_oss *mixer = fmixer->mixer;
 262         struct snd_mixer_oss_slot *pslot;
 263         int result = 0, left, right;
 264
 265         if (mixer == NULL || slot > 30)
 266                 return -EIO;
 267         pslot = &mixer->slots[slot];
 268         left = pslot->volume[0];
 269         right = pslot->volume[1];
 270         if (pslot->get_volume)
 271                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 272         if (!pslot->stereo)
 273                 right = left;
 274         if (snd_BUG_ON(left < 0 || left > 100))
 275                 return -EIO;
 276         if (snd_BUG_ON(right < 0 || right > 100))
 277                 return -EIO;
 278         if (result >= 0) {
 279                 pslot->volume[0] = left;
 280                 pslot->volume[1] = right;
 281                 result = (left & 0xff) | ((right & 0xff) << 8);
 282         }
 283         return result;
 284 }
 285
 286 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 287                                     int slot, int volume)
 288 {
 289         struct snd_mixer_oss *mixer = fmixer->mixer;
 290         struct snd_mixer_oss_slot *pslot;
 291         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 292
 293         if (mixer == NULL || slot > 30)
 294                 return -EIO;
 295         pslot = &mixer->slots[slot];
 296         if (left > 100)
 297                 left = 100;
 298         if (right > 100)
 299                 right = 100;
 300         if (!pslot->stereo)
 301                 right = left;
 302         if (pslot->put_volume)
 303                 result = pslot->put_volume(fmixer, pslot, left, right);
 304         if (result < 0)
 305                 return result;
 306         pslot->volume[0] = left;
 307         pslot->volume[1] = right;
 308         return (left & 0xff) | ((right & 0xff) << 8);
 309 }
 310
 311 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 312 {
 313         void __user *argp = (void __user *)arg;
 314         int __user *p = argp;
 315         int tmp;
 316
 317         if (snd_BUG_ON(!fmixer))
 318                 return -ENXIO;
 319         if (((cmd >> 8) & 0xff) == 'M') {
 320                 switch (cmd) {
 321                 case SOUND_MIXER_INFO:
 322                         return snd_mixer_oss_info(fmixer, argp);
 323                 case SOUND_OLD_MIXER_INFO:
 324                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 325                 case SOUND_MIXER_WRITE_RECSRC:
 326                         if (get_user(tmp, p))
 327                                 return -EFAULT;
 328                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 329                         if (tmp < 0)
 330                                 return tmp;
 331                         return put_user(tmp, p);
 332                 case OSS_GETVERSION:
 333                         return put_user(SNDRV_OSS_VERSION, p);
 334                 case OSS_ALSAEMULVER:
 335                         return put_user(1, p);
 336                 case SOUND_MIXER_READ_DEVMASK:
 337                         tmp = snd_mixer_oss_devmask(fmixer);
 338                         if (tmp < 0)
 339                                 return tmp;
 340                         return put_user(tmp, p);
 341                 case SOUND_MIXER_READ_STEREODEVS:
 342                         tmp = snd_mixer_oss_stereodevs(fmixer);
 343                         if (tmp < 0)
 344                                 return tmp;
 345                         return put_user(tmp, p);
 346                 case SOUND_MIXER_READ_RECMASK:
 347                         tmp = snd_mixer_oss_recmask(fmixer);
 348                         if (tmp < 0)
 349                                 return tmp;
 350                         return put_user(tmp, p);
 351                 case SOUND_MIXER_READ_CAPS:
 352                         tmp = snd_mixer_oss_caps(fmixer);
 353                         if (tmp < 0)
 354                                 return tmp;
 355                         return put_user(tmp, p);
 356                 case SOUND_MIXER_READ_RECSRC:
 357                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 358                         if (tmp < 0)
 359                                 return tmp;
 360                         return put_user(tmp, p);
 361                 }
 362         }
 363         if (cmd & SIOC_IN) {
 364                 if (get_user(tmp, p))
 365                         return -EFAULT;
 366                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 367                 if (tmp < 0)
 368                         return tmp;
 369                 return put_user(tmp, p);
 370         } else if (cmd & SIOC_OUT) {
 371                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 372                 if (tmp < 0)
 373                         return tmp;
 374                 return put_user(tmp, p);
 375         }
 376         return -ENXIO;
 377 }
 378
 379 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 380 {
 381         return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 382 }
 383
 384 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 385 {
 386         struct snd_mixer_oss_file fmixer;
 387
 388         if (snd_BUG_ON(!card))
 389                 return -ENXIO;
 390         if (card->mixer_oss == NULL)
 391                 return -ENXIO;
 392         memset(&fmixer, 0, sizeof(fmixer));
 393         fmixer.card = card;
 394         fmixer.mixer = card->mixer_oss;
 395         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 396 }
 397
 398 #ifdef CONFIG_COMPAT
 399 /* all compatible */
 400 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 401 #else
 402 #define snd_mixer_oss_ioctl_compat      NULL
 403 #endif
 404
 405 /*
 406  *  REGISTRATION PART
 407  */
 408
 409 static const struct file_operations snd_mixer_oss_f_ops =
 410 {
 411         .owner =        THIS_MODULE,
 412         .open =         snd_mixer_oss_open,
 413         .release =      snd_mixer_oss_release,
 414         .llseek =       no_llseek,
 415         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 416         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 417 };
 418
 419 /*
 420  *  utilities
 421  */
 422
 423 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 424 {
 425         long orange = omax - omin, nrange = nmax - nmin;
 426
 427         if (orange == 0)
 428                 return 0;
 429         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 430 }
 431
 432 /* convert from alsa native to oss values (0-100) */
 433 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 434 {
 435         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 436                 return *old;
 437         return snd_mixer_oss_conv(val, min, max, 0, 100);
 438 }
 439
 440 /* convert from oss to alsa native values */
 441 static long snd_mixer_oss_conv2(long val, long min, long max)
 442 {
 443         return snd_mixer_oss_conv(val, 0, 100, min, max);
 444 }
 445
 446 #if 0
 447 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 448 {
 449         struct snd_mixer_oss *mixer = card->mixer_oss;
 450         if (mixer)
 451                 mixer->mask_recsrc |= 1 << slot;
 452 }
 453
 454 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 455 {
 456         struct snd_mixer_oss *mixer = card->mixer_oss;
 457         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 458                 return 1;
 459         return 0;
 460 }
 461 #endif
 462
 463 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 464
 465 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 466 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 467 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 468 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 469 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 470 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 471 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 472 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 473 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 474 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 475 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 476
 477 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 478
 479 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 480 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 481 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 482 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 483 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 484 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 485 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 486 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 487 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 488 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 489 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 490
 491 struct slot {
 492         unsigned int signature;
 493         unsigned int present;
 494         unsigned int channels;
 495         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 496         unsigned int capture_item;
 497         struct snd_mixer_oss_assign_table *assigned;
 498         unsigned int allocated: 1;
 499 };
 500
 501 #define ID_UNKNOWN      ((unsigned int)-1)
 502
 503 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 504 {
 505         struct snd_card *card = mixer->card;
 506         struct snd_ctl_elem_id id;
 507
 508         memset(&id, 0, sizeof(id));
 509         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 510         strlcpy(id.name, name, sizeof(id.name));
 511         id.index = index;
 512         return snd_ctl_find_id(card, &id);
 513 }
 514
 515 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 516                                           struct snd_mixer_oss_slot *pslot,
 517                                           unsigned int numid,
 518                                           int *left, int *right)
 519 {
 520         struct snd_ctl_elem_info *uinfo;
 521         struct snd_ctl_elem_value *uctl;
 522         struct snd_kcontrol *kctl;
 523         struct snd_card *card = fmixer->card;
 524
 525         if (numid == ID_UNKNOWN)
 526                 return;
 527         down_read(&card->controls_rwsem);
 528         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 529                 up_read(&card->controls_rwsem);
 530                 return;
 531         }
 532         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 533         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 534         if (uinfo == NULL || uctl == NULL)
 535                 goto __unalloc;
 536         if (kctl->info(kctl, uinfo))
 537                 goto __unalloc;
 538         if (kctl->get(kctl, uctl))
 539                 goto __unalloc;
 540         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 541             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 542                 goto __unalloc;
 543         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 544         if (uinfo->count > 1)
 545                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 546       __unalloc:
 547         up_read(&card->controls_rwsem);
 548         kfree(uctl);
 549         kfree(uinfo);
 550 }
 551
 552 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 553                                          struct snd_mixer_oss_slot *pslot,
 554                                          unsigned int numid,
 555                                          int *left, int *right,
 556                                          int route)
 557 {
 558         struct snd_ctl_elem_info *uinfo;
 559         struct snd_ctl_elem_value *uctl;
 560         struct snd_kcontrol *kctl;
 561         struct snd_card *card = fmixer->card;
 562
 563         if (numid == ID_UNKNOWN)
 564                 return;
 565         down_read(&card->controls_rwsem);
 566         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 567                 up_read(&card->controls_rwsem);
 568                 return;
 569         }
 570         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 571         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 572         if (uinfo == NULL || uctl == NULL)
 573                 goto __unalloc;
 574         if (kctl->info(kctl, uinfo))
 575                 goto __unalloc;
 576         if (kctl->get(kctl, uctl))
 577                 goto __unalloc;
 578         if (!uctl->value.integer.value[0]) {
 579                 *left = 0;
 580                 if (uinfo->count == 1)
 581                         *right = 0;
 582         }
 583         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 584                 *right = 0;
 585       __unalloc:
 586         up_read(&card->controls_rwsem);
 587         kfree(uctl);
 588         kfree(uinfo);
 589 }
 590
 591 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 592                                      struct snd_mixer_oss_slot *pslot,
 593                                      int *left, int *right)
 594 {
 595         struct slot *slot = pslot->private_data;
 596
 597         *left = *right = 100;
 598         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 599                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 600         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 601                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 602         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 603                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 604         }
 605         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 606                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 607         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 608                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 609         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 610                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 611         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 612                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 613         }
 614         return 0;
 615 }
 616
 617 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 618                                           struct snd_mixer_oss_slot *pslot,
 619                                           unsigned int numid,
 620                                           int left, int right)
 621 {
 622         struct snd_ctl_elem_info *uinfo;
 623         struct snd_ctl_elem_value *uctl;
 624         struct snd_kcontrol *kctl;
 625         struct snd_card *card = fmixer->card;
 626         int res;
 627
 628         if (numid == ID_UNKNOWN)
 629                 return;
 630         down_read(&card->controls_rwsem);
 631         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 632                 up_read(&card->controls_rwsem);
 633                 return;
 634         }
 635         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 636         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 637         if (uinfo == NULL || uctl == NULL)
 638                 goto __unalloc;
 639         if (kctl->info(kctl, uinfo))
 640                 goto __unalloc;
 641         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 642             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 643                 goto __unalloc;
 644         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 645         if (uinfo->count > 1)
 646                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 647         if ((res = kctl->put(kctl, uctl)) < 0)
 648                 goto __unalloc;
 649         if (res > 0)
 650                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 651       __unalloc:
 652         up_read(&card->controls_rwsem);
 653         kfree(uctl);
 654         kfree(uinfo);
 655 }
 656
 657 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 658                                          struct snd_mixer_oss_slot *pslot,
 659                                          unsigned int numid,
 660                                          int left, int right,
 661                                          int route)
 662 {
 663         struct snd_ctl_elem_info *uinfo;
 664         struct snd_ctl_elem_value *uctl;
 665         struct snd_kcontrol *kctl;
 666         struct snd_card *card = fmixer->card;
 667         int res;
 668
 669         if (numid == ID_UNKNOWN)
 670                 return;
 671         down_read(&card->controls_rwsem);
 672         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 673                 up_read(&card->controls_rwsem);
 674                 return;
 675         }
 676         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 677         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 678         if (uinfo == NULL || uctl == NULL)
 679                 goto __unalloc;
 680         if (kctl->info(kctl, uinfo))
 681                 goto __unalloc;
 682         if (uinfo->count > 1) {
 683                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 684                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 685                 if (route) {
 686                         uctl->value.integer.value[1] =
 687                         uctl->value.integer.value[2] = 0;
 688                 }
 689         } else {
 690                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 691         }
 692         if ((res = kctl->put(kctl, uctl)) < 0)
 693                 goto __unalloc;
 694         if (res > 0)
 695                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 696       __unalloc:
 697         up_read(&card->controls_rwsem);
 698         kfree(uctl);
 699         kfree(uinfo);
 700 }
 701
 702 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 703                                      struct snd_mixer_oss_slot *pslot,
 704                                      int left, int right)
 705 {
 706         struct slot *slot = pslot->private_data;
 707
 708         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 709                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 710                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 711                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 712         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 713                 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 714                         slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 715         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 716                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 717         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 718                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 719         }
 720         if (left || right) {
 721                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 722                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 723                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
 724                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 725                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 726                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 727                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 728                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 729                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
 730                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 731                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 732                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 733         } else {
 734                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 735                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 736                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 737                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 738                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 739                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 740                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 741                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 742                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 743                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 744                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 745                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 746                 }
 747         }
 748         return 0;
 749 }
 750
 751 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 752                                         struct snd_mixer_oss_slot *pslot,
 753                                         int *active)
 754 {
 755         struct slot *slot = pslot->private_data;
 756         int left, right;
 757
 758         left = right = 1;
 759         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 760         *active = (left || right) ? 1 : 0;
 761         return 0;
 762 }
 763
 764 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 765                                            struct snd_mixer_oss_slot *pslot,
 766                                            int *active)
 767 {
 768         struct slot *slot = pslot->private_data;
 769         int left, right;
 770
 771         left = right = 1;
 772         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 773         *active = (left || right) ? 1 : 0;
 774         return 0;
 775 }
 776
 777 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 778                                         struct snd_mixer_oss_slot *pslot,
 779                                         int active)
 780 {
 781         struct slot *slot = pslot->private_data;
 782
 783         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 784         return 0;
 785 }
 786
 787 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 788                                            struct snd_mixer_oss_slot *pslot,
 789                                            int active)
 790 {
 791         struct slot *slot = pslot->private_data;
 792
 793         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 794         return 0;
 795 }
 796
 797 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 798 {
 799         struct snd_card *card = fmixer->card;
 800         struct snd_mixer_oss *mixer = fmixer->mixer;
 801         struct snd_kcontrol *kctl;
 802         struct snd_mixer_oss_slot *pslot;
 803         struct slot *slot;
 804         struct snd_ctl_elem_info *uinfo;
 805         struct snd_ctl_elem_value *uctl;
 806         int err, idx;
 807
 808         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 809         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 810         if (uinfo == NULL || uctl == NULL) {
 811                 err = -ENOMEM;
 812                 goto __free_only;
 813         }
 814         down_read(&card->controls_rwsem);
 815         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 816         if (! kctl) {
 817                 err = -ENOENT;
 818                 goto __unlock;
 819         }
 820         if ((err = kctl->info(kctl, uinfo)) < 0)
 821                 goto __unlock;
 822         if ((err = kctl->get(kctl, uctl)) < 0)
 823                 goto __unlock;
 824         for (idx = 0; idx < 32; idx++) {
 825                 if (!(mixer->mask_recsrc & (1 << idx)))
 826                         continue;
 827                 pslot = &mixer->slots[idx];
 828                 slot = pslot->private_data;
 829                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 830                         continue;
 831                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 832                         continue;
 833                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 834                         *active_index = idx;
 835                         break;
 836                 }
 837         }
 838         err = 0;
 839       __unlock:
 840         up_read(&card->controls_rwsem);
 841       __free_only:
 842         kfree(uctl);
 843         kfree(uinfo);
 844         return err;
 845 }
 846
 847 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 848 {
 849         struct snd_card *card = fmixer->card;
 850         struct snd_mixer_oss *mixer = fmixer->mixer;
 851         struct snd_kcontrol *kctl;
 852         struct snd_mixer_oss_slot *pslot;
 853         struct slot *slot = NULL;
 854         struct snd_ctl_elem_info *uinfo;
 855         struct snd_ctl_elem_value *uctl;
 856         int err;
 857         unsigned int idx;
 858
 859         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 860         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 861         if (uinfo == NULL || uctl == NULL) {
 862                 err = -ENOMEM;
 863                 goto __free_only;
 864         }
 865         down_read(&card->controls_rwsem);
 866         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 867         if (! kctl) {
 868                 err = -ENOENT;
 869                 goto __unlock;
 870         }
 871         if ((err = kctl->info(kctl, uinfo)) < 0)
 872                 goto __unlock;
 873         for (idx = 0; idx < 32; idx++) {
 874                 if (!(mixer->mask_recsrc & (1 << idx)))
 875                         continue;
 876                 pslot = &mixer->slots[idx];
 877                 slot = pslot->private_data;
 878                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 879                         continue;
 880                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 881                         continue;
 882                 if (idx == active_index)
 883                         break;
 884                 slot = NULL;
 885         }
 886         if (! slot)
 887                 goto __unlock;
 888         for (idx = 0; idx < uinfo->count; idx++)
 889                 uctl->value.enumerated.item[idx] = slot->capture_item;
 890         err = kctl->put(kctl, uctl);
 891         if (err > 0)
 892                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 893         err = 0;
 894       __unlock:
 895         up_read(&card->controls_rwsem);
 896       __free_only:
 897         kfree(uctl);
 898         kfree(uinfo);
 899         return err;
 900 }
 901
 902 struct snd_mixer_oss_assign_table {
 903         int oss_id;
 904         const char *name;
 905         int index;
 906 };
 907
 908 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 909 {
 910         struct snd_ctl_elem_info *info;
 911         struct snd_kcontrol *kcontrol;
 912         struct snd_card *card = mixer->card;
 913         int err;
 914
 915         down_read(&card->controls_rwsem);
 916         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 917         if (kcontrol == NULL) {
 918                 up_read(&card->controls_rwsem);
 919                 return 0;
 920         }
 921         info = kmalloc(sizeof(*info), GFP_KERNEL);
 922         if (! info) {
 923                 up_read(&card->controls_rwsem);
 924                 return -ENOMEM;
 925         }
 926         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 927                 up_read(&card->controls_rwsem);
 928                 kfree(info);
 929                 return err;
 930         }
 931         slot->numid[item] = kcontrol->id.numid;
 932         up_read(&card->controls_rwsem);
 933         if (info->count > slot->channels)
 934                 slot->channels = info->count;
 935         slot->present |= 1 << item;
 936         kfree(info);
 937         return 0;
 938 }
 939
 940 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 941 {
 942         struct slot *p = chn->private_data;
 943         if (p) {
 944                 if (p->allocated && p->assigned) {
 945                         kfree(p->assigned->name);
 946                         kfree(p->assigned);
 947                 }
 948                 kfree(p);
 949         }
 950 }
 951
 952 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 953 {
 954         int idx = rslot->number; /* remember this */
 955         if (rslot->private_free)
 956                 rslot->private_free(rslot);
 957         memset(rslot, 0, sizeof(*rslot));
 958         rslot->number = idx;
 959 }
 960
 961 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 962    snd_mixer_oss_build_input! */
 963 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 964                                         struct snd_mixer_oss_assign_table *ptr,
 965                                         struct slot *slot)
 966 {
 967         char str[64];
 968         int err;
 969
 970         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 971                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 972         if (err)
 973                 return err;
 974         sprintf(str, "%s Switch", ptr->name);
 975         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 976                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 977         if (err)
 978                 return err;
 979         sprintf(str, "%s Route", ptr->name);
 980         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 981                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 982         if (err)
 983                 return err;
 984         sprintf(str, "%s Volume", ptr->name);
 985         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 986                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 987         if (err)
 988                 return err;
 989         sprintf(str, "%s Playback Switch", ptr->name);
 990         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 991                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 992         if (err)
 993                 return err;
 994         sprintf(str, "%s Playback Route", ptr->name);
 995         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 996                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
 997         if (err)
 998                 return err;
 999         sprintf(str, "%s Playback Volume", ptr->name);
1000         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1001                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
1002         if (err)
1003                 return err;
1004         sprintf(str, "%s Capture Switch", ptr->name);
1005         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1006                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
1007         if (err)
1008                 return err;
1009         sprintf(str, "%s Capture Route", ptr->name);
1010         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1011                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
1012         if (err)
1013                 return err;
1014         sprintf(str, "%s Capture Volume", ptr->name);
1015         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1016                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
1017         if (err)
1018                 return err;
1019
1020         return 0;
1021 }
1022
1023 /*
1024  * build an OSS mixer element.
1025  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1026  * when replace_old = 1, the old entry is replaced with the new one.
1027  */
1028 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)
1029 {
1030         struct slot slot;
1031         struct slot *pslot;
1032         struct snd_kcontrol *kctl;
1033         struct snd_mixer_oss_slot *rslot;
1034         char str[64];
1035
1036         /* check if already assigned */
1037         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1038                 return 0;
1039
1040         memset(&slot, 0, sizeof(slot));
1041         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1042         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1043                 return 0;
1044         down_read(&mixer->card->controls_rwsem);
1045         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1046                 struct snd_ctl_elem_info *uinfo;
1047
1048                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1049                 if (! uinfo) {
1050                         up_read(&mixer->card->controls_rwsem);
1051                         return -ENOMEM;
1052                 }
1053
1054                 if (kctl->info(kctl, uinfo)) {
1055                         up_read(&mixer->card->controls_rwsem);
1056                         return 0;
1057                 }
1058                 strcpy(str, ptr->name);
1059                 if (!strcmp(str, "Master"))
1060                         strcpy(str, "Mix");
1061                 if (!strcmp(str, "Master Mono"))
1062                         strcpy(str, "Mix Mono");
1063                 slot.capture_item = 0;
1064                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1065                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1066                 } else {
1067                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1068                                 uinfo->value.enumerated.item = slot.capture_item;
1069                                 if (kctl->info(kctl, uinfo)) {
1070                                         up_read(&mixer->card->controls_rwsem);
1071                                         return 0;
1072                                 }
1073                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1074                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1075                                         break;
1076                                 }
1077                         }
1078                 }
1079                 kfree(uinfo);
1080         }
1081         up_read(&mixer->card->controls_rwsem);
1082         if (slot.present != 0) {
1083                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1084                 if (! pslot)
1085                         return -ENOMEM;
1086                 *pslot = slot;
1087                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1088                 pslot->assigned = ptr;
1089                 pslot->allocated = ptr_allocated;
1090                 rslot = &mixer->slots[ptr->oss_id];
1091                 mixer_slot_clear(rslot);
1092                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1093                 rslot->get_volume = snd_mixer_oss_get_volume1;
1094                 rslot->put_volume = snd_mixer_oss_put_volume1;
1095                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1096                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1097                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1098                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1099                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1100                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1101                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1102                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1103                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1104                 }
1105                 rslot->private_data = pslot;
1106                 rslot->private_free = snd_mixer_oss_slot_free;
1107                 return 1;
1108         }
1109         return 0;
1110 }
1111
1112 #ifdef CONFIG_PROC_FS
1113 /*
1114  */
1115 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1116 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1117         MIXER_VOL(VOLUME),
1118         MIXER_VOL(BASS),
1119         MIXER_VOL(TREBLE),
1120         MIXER_VOL(SYNTH),
1121         MIXER_VOL(PCM),
1122         MIXER_VOL(SPEAKER),
1123         MIXER_VOL(LINE),
1124         MIXER_VOL(MIC),
1125         MIXER_VOL(CD),
1126         MIXER_VOL(IMIX),
1127         MIXER_VOL(ALTPCM),
1128         MIXER_VOL(RECLEV),
1129         MIXER_VOL(IGAIN),
1130         MIXER_VOL(OGAIN),
1131         MIXER_VOL(LINE1),
1132         MIXER_VOL(LINE2),
1133         MIXER_VOL(LINE3),
1134         MIXER_VOL(DIGITAL1),
1135         MIXER_VOL(DIGITAL2),
1136         MIXER_VOL(DIGITAL3),
1137         MIXER_VOL(PHONEIN),
1138         MIXER_VOL(PHONEOUT),
1139         MIXER_VOL(VIDEO),
1140         MIXER_VOL(RADIO),
1141         MIXER_VOL(MONITOR),
1142 };
1143
1144 /*
1145  *  /proc interface
1146  */
1147
1148 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1149                                     struct snd_info_buffer *buffer)
1150 {
1151         struct snd_mixer_oss *mixer = entry->private_data;
1152         int i;
1153
1154         mutex_lock(&mixer->reg_mutex);
1155         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1156                 struct slot *p;
1157
1158                 if (! oss_mixer_names[i])
1159                         continue;
1160                 p = (struct slot *)mixer->slots[i].private_data;
1161                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1162                 if (p && p->assigned)
1163                         snd_iprintf(buffer, "\"%s\" %d\n",
1164                                     p->assigned->name,
1165                                     p->assigned->index);
1166                 else
1167                         snd_iprintf(buffer, "\"\" 0\n");
1168         }
1169         mutex_unlock(&mixer->reg_mutex);
1170 }
1171
1172 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1173                                      struct snd_info_buffer *buffer)
1174 {
1175         struct snd_mixer_oss *mixer = entry->private_data;
1176         char line[128], str[32], idxstr[16];
1177         const char *cptr;
1178         int ch, idx;
1179         struct snd_mixer_oss_assign_table *tbl;
1180         struct slot *slot;
1181
1182         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1183                 cptr = snd_info_get_str(str, line, sizeof(str));
1184                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1185                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1186                                 break;
1187                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1188                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1189                         continue;
1190                 }
1191                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1192                 if (! *str) {
1193                         /* remove the entry */
1194                         mutex_lock(&mixer->reg_mutex);
1195                         mixer_slot_clear(&mixer->slots[ch]);
1196                         mutex_unlock(&mixer->reg_mutex);
1197                         continue;
1198                 }
1199                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1200                 idx = simple_strtoul(idxstr, NULL, 10);
1201                 if (idx >= 0x4000) { /* too big */
1202                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1203                         continue;
1204                 }
1205                 mutex_lock(&mixer->reg_mutex);
1206                 slot = (struct slot *)mixer->slots[ch].private_data;
1207                 if (slot && slot->assigned &&
1208                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1209                         /* not changed */
1210                         goto __unlock;
1211                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1212                 if (! tbl) {
1213                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1214                         goto __unlock;
1215                 }
1216                 tbl->oss_id = ch;
1217                 tbl->name = kstrdup(str, GFP_KERNEL);
1218                 if (! tbl->name) {
1219                         kfree(tbl);
1220                         goto __unlock;
1221                 }
1222                 tbl->index = idx;
1223                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1224                         kfree(tbl->name);
1225                         kfree(tbl);
1226                 }
1227         __unlock:
1228                 mutex_unlock(&mixer->reg_mutex);
1229         }
1230 }
1231
1232 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1233 {
1234         struct snd_info_entry *entry;
1235
1236         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1237                                            mixer->card->proc_root);
1238         if (! entry)
1239                 return;
1240         entry->content = SNDRV_INFO_CONTENT_TEXT;
1241         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1242         entry->c.text.read = snd_mixer_oss_proc_read;
1243         entry->c.text.write = snd_mixer_oss_proc_write;
1244         entry->private_data = mixer;
1245         if (snd_info_register(entry) < 0) {
1246                 snd_info_free_entry(entry);
1247                 entry = NULL;
1248         }
1249         mixer->proc_entry = entry;
1250 }
1251
1252 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1253 {
1254         snd_info_free_entry(mixer->proc_entry);
1255         mixer->proc_entry = NULL;
1256 }
1257 #else /* !CONFIG_PROC_FS */
1258 #define snd_mixer_oss_proc_init(mix)
1259 #define snd_mixer_oss_proc_done(mix)
1260 #endif /* CONFIG_PROC_FS */
1261
1262 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1263 {
1264         static struct snd_mixer_oss_assign_table table[] = {
1265                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1266                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1267                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1268                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1269                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1270                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1271                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1272                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1273                 { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1274                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1275                 { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1276                 { SOUND_MIXER_LINE,     "Line",                 0 },
1277                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1278                 { SOUND_MIXER_CD,       "CD",                   0 },
1279                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1280                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1281                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1282                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1283                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1284                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1285                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1286                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1287                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1288                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1289                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1290                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1291                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1292                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1293                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1294                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1295                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1296                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1297                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1298                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1299                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1300                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1301                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1302                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1303         };
1304         unsigned int idx;
1305
1306         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1307                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1308         if (mixer->mask_recsrc) {
1309                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1310                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1311         }
1312 }
1313
1314 /*
1315  *
1316  */
1317
1318 static int snd_mixer_oss_free1(void *private)
1319 {
1320         struct snd_mixer_oss *mixer = private;
1321         struct snd_card *card;
1322         int idx;
1323
1324         if (!mixer)
1325                 return 0;
1326         card = mixer->card;
1327         if (snd_BUG_ON(mixer != card->mixer_oss))
1328                 return -ENXIO;
1329         card->mixer_oss = NULL;
1330         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1331                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1332                 if (chn->private_free)
1333                         chn->private_free(chn);
1334         }
1335         kfree(mixer);
1336         return 0;
1337 }
1338
1339 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1340 {
1341         struct snd_mixer_oss *mixer;
1342
1343         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1344                 char name[128];
1345                 int idx, err;
1346
1347                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1348                 if (mixer == NULL)
1349                         return -ENOMEM;
1350                 mutex_init(&mixer->reg_mutex);
1351                 sprintf(name, "mixer%i%i", card->number, 0);
1352                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1353                                                    card, 0,
1354                                                    &snd_mixer_oss_f_ops, card,
1355                                                    name)) < 0) {
1356                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1357                                    card->number, 0);
1358                         kfree(mixer);
1359                         return err;
1360                 }
1361                 mixer->oss_dev_alloc = 1;
1362                 mixer->card = card;
1363                 if (*card->mixername)
1364                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1365                 else
1366                         strlcpy(mixer->name, name, sizeof(mixer->name));
1367 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1368                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1369                                       card->number,
1370                                       mixer->name);
1371 #endif
1372                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1373                         mixer->slots[idx].number = idx;
1374                 card->mixer_oss = mixer;
1375                 snd_mixer_oss_build(mixer);
1376                 snd_mixer_oss_proc_init(mixer);
1377         } else {
1378                 mixer = card->mixer_oss;
1379                 if (mixer == NULL)
1380                         return 0;
1381                 if (mixer->oss_dev_alloc) {
1382 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1383                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1384 #endif
1385                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1386                         mixer->oss_dev_alloc = 0;
1387                 }
1388                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1389                         return 0;
1390                 snd_mixer_oss_proc_done(mixer);
1391                 return snd_mixer_oss_free1(mixer);
1392         }
1393         return 0;
1394 }
1395
1396 static int __init alsa_mixer_oss_init(void)
1397 {
1398         int idx;
1399
1400         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1401         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1402                 if (snd_cards[idx])
1403                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1404         }
1405         return 0;
1406 }
1407
1408 static void __exit alsa_mixer_oss_exit(void)
1409 {
1410         int idx;
1411
1412         snd_mixer_oss_notify_callback = NULL;
1413         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1414                 if (snd_cards[idx])
1415                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1416         }
1417 }
1418
1419 module_init(alsa_mixer_oss_init)
1420 module_exit(alsa_mixer_oss_exit)
1421
1422 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);