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