git.oblomov.eu Git - linux-2.6/blob - 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         snd_assert(left >= 0 && left <= 100, return -EIO);
 261         snd_assert(right >= 0 && right <= 100, return -EIO);
 262         if (result >= 0) {
 263                 pslot->volume[0] = left;
 264                 pslot->volume[1] = right;
 265                 result = (left & 0xff) | ((right & 0xff) << 8);
 266         }
 267         return result;
 268 }
 269
 270 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 271                                     int slot, int volume)
 272 {
 273         struct snd_mixer_oss *mixer = fmixer->mixer;
 274         struct snd_mixer_oss_slot *pslot;
 275         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 276
 277         if (mixer == NULL || slot > 30)
 278                 return -EIO;
 279         pslot = &mixer->slots[slot];
 280         if (left > 100)
 281                 left = 100;
 282         if (right > 100)
 283                 right = 100;
 284         if (!pslot->stereo)
 285                 right = left;
 286         if (pslot->put_volume)
 287                 result = pslot->put_volume(fmixer, pslot, left, right);
 288         if (result < 0)
 289                 return result;
 290         pslot->volume[0] = left;
 291         pslot->volume[1] = right;
 292         return (left & 0xff) | ((right & 0xff) << 8);
 293 }
 294
 295 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 296 {
 297         void __user *argp = (void __user *)arg;
 298         int __user *p = argp;
 299         int tmp;
 300
 301         snd_assert(fmixer != NULL, return -ENXIO);
 302         if (((cmd >> 8) & 0xff) == 'M') {
 303                 switch (cmd) {
 304                 case SOUND_MIXER_INFO:
 305                         return snd_mixer_oss_info(fmixer, argp);
 306                 case SOUND_OLD_MIXER_INFO:
 307                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 308                 case SOUND_MIXER_WRITE_RECSRC:
 309                         if (get_user(tmp, p))
 310                                 return -EFAULT;
 311                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 312                         if (tmp < 0)
 313                                 return tmp;
 314                         return put_user(tmp, p);
 315                 case OSS_GETVERSION:
 316                         return put_user(SNDRV_OSS_VERSION, p);
 317                 case OSS_ALSAEMULVER:
 318                         return put_user(1, p);
 319                 case SOUND_MIXER_READ_DEVMASK:
 320                         tmp = snd_mixer_oss_devmask(fmixer);
 321                         if (tmp < 0)
 322                                 return tmp;
 323                         return put_user(tmp, p);
 324                 case SOUND_MIXER_READ_STEREODEVS:
 325                         tmp = snd_mixer_oss_stereodevs(fmixer);
 326                         if (tmp < 0)
 327                                 return tmp;
 328                         return put_user(tmp, p);
 329                 case SOUND_MIXER_READ_RECMASK:
 330                         tmp = snd_mixer_oss_recmask(fmixer);
 331                         if (tmp < 0)
 332                                 return tmp;
 333                         return put_user(tmp, p);
 334                 case SOUND_MIXER_READ_CAPS:
 335                         tmp = snd_mixer_oss_caps(fmixer);
 336                         if (tmp < 0)
 337                                 return tmp;
 338                         return put_user(tmp, p);
 339                 case SOUND_MIXER_READ_RECSRC:
 340                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 341                         if (tmp < 0)
 342                                 return tmp;
 343                         return put_user(tmp, p);
 344                 }
 345         }
 346         if (cmd & SIOC_IN) {
 347                 if (get_user(tmp, p))
 348                         return -EFAULT;
 349                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 350                 if (tmp < 0)
 351                         return tmp;
 352                 return put_user(tmp, p);
 353         } else if (cmd & SIOC_OUT) {
 354                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 355                 if (tmp < 0)
 356                         return tmp;
 357                 return put_user(tmp, p);
 358         }
 359         return -ENXIO;
 360 }
 361
 362 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 363 {
 364         return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
 365 }
 366
 367 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 368 {
 369         struct snd_mixer_oss_file fmixer;
 370
 371         snd_assert(card != NULL, return -ENXIO);
 372         if (card->mixer_oss == NULL)
 373                 return -ENXIO;
 374         memset(&fmixer, 0, sizeof(fmixer));
 375         fmixer.card = card;
 376         fmixer.mixer = card->mixer_oss;
 377         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 378 }
 379
 380 #ifdef CONFIG_COMPAT
 381 /* all compatible */
 382 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 383 #else
 384 #define snd_mixer_oss_ioctl_compat      NULL
 385 #endif
 386
 387 /*
 388  *  REGISTRATION PART
 389  */
 390
 391 static const struct file_operations snd_mixer_oss_f_ops =
 392 {
 393         .owner =        THIS_MODULE,
 394         .open =         snd_mixer_oss_open,
 395         .release =      snd_mixer_oss_release,
 396         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 397         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 398 };
 399
 400 /*
 401  *  utilities
 402  */
 403
 404 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 405 {
 406         long orange = omax - omin, nrange = nmax - nmin;
 407
 408         if (orange == 0)
 409                 return 0;
 410         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 411 }
 412
 413 /* convert from alsa native to oss values (0-100) */
 414 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 415 {
 416         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 417                 return *old;
 418         return snd_mixer_oss_conv(val, min, max, 0, 100);
 419 }
 420
 421 /* convert from oss to alsa native values */
 422 static long snd_mixer_oss_conv2(long val, long min, long max)
 423 {
 424         return snd_mixer_oss_conv(val, 0, 100, min, max);
 425 }
 426
 427 #if 0
 428 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 429 {
 430         struct snd_mixer_oss *mixer = card->mixer_oss;
 431         if (mixer)
 432                 mixer->mask_recsrc |= 1 << slot;
 433 }
 434
 435 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 436 {
 437         struct snd_mixer_oss *mixer = card->mixer_oss;
 438         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 439                 return 1;
 440         return 0;
 441 }
 442 #endif
 443
 444 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 445
 446 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 447 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 448 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 449 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 450 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 451 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 452 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 453 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 454 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 455 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 456 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 457
 458 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 459
 460 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 461 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 462 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 463 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 464 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 465 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 466 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 467 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 468 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 469 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 470 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 471
 472 struct slot {
 473         unsigned int signature;
 474         unsigned int present;
 475         unsigned int channels;
 476         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 477         unsigned int capture_item;
 478         struct snd_mixer_oss_assign_table *assigned;
 479         unsigned int allocated: 1;
 480 };
 481
 482 #define ID_UNKNOWN      ((unsigned int)-1)
 483
 484 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 485 {
 486         struct snd_card *card = mixer->card;
 487         struct snd_ctl_elem_id id;
 488
 489         memset(&id, 0, sizeof(id));
 490         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 491         strcpy(id.name, name);
 492         id.index = index;
 493         return snd_ctl_find_id(card, &id);
 494 }
 495
 496 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 497                                           struct snd_mixer_oss_slot *pslot,
 498                                           unsigned int numid,
 499                                           int *left, int *right)
 500 {
 501         struct snd_ctl_elem_info *uinfo;
 502         struct snd_ctl_elem_value *uctl;
 503         struct snd_kcontrol *kctl;
 504         struct snd_card *card = fmixer->card;
 505
 506         if (numid == ID_UNKNOWN)
 507                 return;
 508         down_read(&card->controls_rwsem);
 509         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 510                 up_read(&card->controls_rwsem);
 511                 return;
 512         }
 513         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 514         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 515         if (uinfo == NULL || uctl == NULL)
 516                 goto __unalloc;
 517         if (kctl->info(kctl, uinfo))
 518                 goto __unalloc;
 519         if (kctl->get(kctl, uctl))
 520                 goto __unalloc;
 521         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 522             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 523                 goto __unalloc;
 524         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 525         if (uinfo->count > 1)
 526                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 527       __unalloc:
 528         up_read(&card->controls_rwsem);
 529         kfree(uctl);
 530         kfree(uinfo);
 531 }
 532
 533 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 534                                          struct snd_mixer_oss_slot *pslot,
 535                                          unsigned int numid,
 536                                          int *left, int *right,
 537                                          int route)
 538 {
 539         struct snd_ctl_elem_info *uinfo;
 540         struct snd_ctl_elem_value *uctl;
 541         struct snd_kcontrol *kctl;
 542         struct snd_card *card = fmixer->card;
 543
 544         if (numid == ID_UNKNOWN)
 545                 return;
 546         down_read(&card->controls_rwsem);
 547         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 548                 up_read(&card->controls_rwsem);
 549                 return;
 550         }
 551         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 552         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 553         if (uinfo == NULL || uctl == NULL)
 554                 goto __unalloc;
 555         if (kctl->info(kctl, uinfo))
 556                 goto __unalloc;
 557         if (kctl->get(kctl, uctl))
 558                 goto __unalloc;
 559         if (!uctl->value.integer.value[0]) {
 560                 *left = 0;
 561                 if (uinfo->count == 1)
 562                         *right = 0;
 563         }
 564         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 565                 *right = 0;
 566       __unalloc:
 567         up_read(&card->controls_rwsem);
 568         kfree(uctl);
 569         kfree(uinfo);
 570 }
 571
 572 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 573                                      struct snd_mixer_oss_slot *pslot,
 574                                      int *left, int *right)
 575 {
 576         struct slot *slot = (struct slot *)pslot->private_data;
 577
 578         *left = *right = 100;
 579         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 580                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 581         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 582                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 583         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 584                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 585         }
 586         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 587                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 588         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 589                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 590         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 591                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 592         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 593                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 594         }
 595         return 0;
 596 }
 597
 598 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 599                                           struct snd_mixer_oss_slot *pslot,
 600                                           unsigned int numid,
 601                                           int left, int right)
 602 {
 603         struct snd_ctl_elem_info *uinfo;
 604         struct snd_ctl_elem_value *uctl;
 605         struct snd_kcontrol *kctl;
 606         struct snd_card *card = fmixer->card;
 607         int res;
 608
 609         if (numid == ID_UNKNOWN)
 610                 return;
 611         down_read(&card->controls_rwsem);
 612         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 613                 return;
 614         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 615         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 616         if (uinfo == NULL || uctl == NULL)
 617                 goto __unalloc;
 618         if (kctl->info(kctl, uinfo))
 619                 goto __unalloc;
 620         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 621             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 622                 goto __unalloc;
 623         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 624         if (uinfo->count > 1)
 625                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 626         if ((res = kctl->put(kctl, uctl)) < 0)
 627                 goto __unalloc;
 628         if (res > 0)
 629                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 630       __unalloc:
 631         up_read(&card->controls_rwsem);
 632         kfree(uctl);
 633         kfree(uinfo);
 634 }
 635
 636 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 637                                          struct snd_mixer_oss_slot *pslot,
 638                                          unsigned int numid,
 639                                          int left, int right,
 640                                          int route)
 641 {
 642         struct snd_ctl_elem_info *uinfo;
 643         struct snd_ctl_elem_value *uctl;
 644         struct snd_kcontrol *kctl;
 645         struct snd_card *card = fmixer->card;
 646         int res;
 647
 648         if (numid == ID_UNKNOWN)
 649                 return;
 650         down_read(&card->controls_rwsem);
 651         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 652                 up_read(&fmixer->card->controls_rwsem);
 653                 return;
 654         }
 655         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 656         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 657         if (uinfo == NULL || uctl == NULL)
 658                 goto __unalloc;
 659         if (kctl->info(kctl, uinfo))
 660                 goto __unalloc;
 661         if (uinfo->count > 1) {
 662                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 663                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 664                 if (route) {
 665                         uctl->value.integer.value[1] =
 666                         uctl->value.integer.value[2] = 0;
 667                 }
 668         } else {
 669                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 670         }
 671         if ((res = kctl->put(kctl, uctl)) < 0)
 672                 goto __unalloc;
 673         if (res > 0)
 674                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 675       __unalloc:
 676         up_read(&card->controls_rwsem);
 677         kfree(uctl);
 678         kfree(uinfo);
 679 }
 680
 681 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 682                                      struct snd_mixer_oss_slot *pslot,
 683                                      int left, int right)
 684 {
 685         struct slot *slot = (struct slot *)pslot->private_data;
 686
 687         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 688                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 689                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 690                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 691         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 692                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 693         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 694                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 695         }
 696         if (left || right) {
 697                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 698                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 699                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 700                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 701                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 702                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 703                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 704                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 705         } else {
 706                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 707                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 708                 } else 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                 } else 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                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 713                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 714                 }
 715         }
 716         return 0;
 717 }
 718
 719 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 720                                         struct snd_mixer_oss_slot *pslot,
 721                                         int *active)
 722 {
 723         struct slot *slot = (struct slot *)pslot->private_data;
 724         int left, right;
 725
 726         left = right = 1;
 727         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 728         *active = (left || right) ? 1 : 0;
 729         return 0;
 730 }
 731
 732 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 733                                            struct snd_mixer_oss_slot *pslot,
 734                                            int *active)
 735 {
 736         struct slot *slot = (struct slot *)pslot->private_data;
 737         int left, right;
 738
 739         left = right = 1;
 740         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 741         *active = (left || right) ? 1 : 0;
 742         return 0;
 743 }
 744
 745 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 746                                         struct snd_mixer_oss_slot *pslot,
 747                                         int active)
 748 {
 749         struct slot *slot = (struct slot *)pslot->private_data;
 750
 751         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 752         return 0;
 753 }
 754
 755 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 756                                            struct snd_mixer_oss_slot *pslot,
 757                                            int active)
 758 {
 759         struct slot *slot = (struct slot *)pslot->private_data;
 760
 761         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 762         return 0;
 763 }
 764
 765 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 766 {
 767         struct snd_card *card = fmixer->card;
 768         struct snd_mixer_oss *mixer = fmixer->mixer;
 769         struct snd_kcontrol *kctl;
 770         struct snd_mixer_oss_slot *pslot;
 771         struct slot *slot;
 772         struct snd_ctl_elem_info *uinfo;
 773         struct snd_ctl_elem_value *uctl;
 774         int err, idx;
 775
 776         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 777         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 778         if (uinfo == NULL || uctl == NULL) {
 779                 err = -ENOMEM;
 780                 goto __unlock;
 781         }
 782         down_read(&card->controls_rwsem);
 783         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 784         if (! kctl) {
 785                 err = -ENOENT;
 786                 goto __unlock;
 787         }
 788         if ((err = kctl->info(kctl, uinfo)) < 0)
 789                 goto __unlock;
 790         if ((err = kctl->get(kctl, uctl)) < 0)
 791                 goto __unlock;
 792         for (idx = 0; idx < 32; idx++) {
 793                 if (!(mixer->mask_recsrc & (1 << idx)))
 794                         continue;
 795                 pslot = &mixer->slots[idx];
 796                 slot = (struct slot *)pslot->private_data;
 797                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 798                         continue;
 799                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 800                         continue;
 801                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 802                         *active_index = idx;
 803                         break;
 804                 }
 805         }
 806         err = 0;
 807       __unlock:
 808         up_read(&card->controls_rwsem);
 809         kfree(uctl);
 810         kfree(uinfo);
 811         return err;
 812 }
 813
 814 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 815 {
 816         struct snd_card *card = fmixer->card;
 817         struct snd_mixer_oss *mixer = fmixer->mixer;
 818         struct snd_kcontrol *kctl;
 819         struct snd_mixer_oss_slot *pslot;
 820         struct slot *slot = NULL;
 821         struct snd_ctl_elem_info *uinfo;
 822         struct snd_ctl_elem_value *uctl;
 823         int err;
 824         unsigned int idx;
 825
 826         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 827         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 828         if (uinfo == NULL || uctl == NULL) {
 829                 err = -ENOMEM;
 830                 goto __unlock;
 831         }
 832         down_read(&card->controls_rwsem);
 833         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 834         if (! kctl) {
 835                 err = -ENOENT;
 836                 goto __unlock;
 837         }
 838         if ((err = kctl->info(kctl, uinfo)) < 0)
 839                 goto __unlock;
 840         for (idx = 0; idx < 32; idx++) {
 841                 if (!(mixer->mask_recsrc & (1 << idx)))
 842                         continue;
 843                 pslot = &mixer->slots[idx];
 844                 slot = (struct slot *)pslot->private_data;
 845                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 846                         continue;
 847                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 848                         continue;
 849                 if (idx == active_index)
 850                         break;
 851                 slot = NULL;
 852         }
 853         if (! slot)
 854                 goto __unlock;
 855         for (idx = 0; idx < uinfo->count; idx++)
 856                 uctl->value.enumerated.item[idx] = slot->capture_item;
 857         err = kctl->put(kctl, uctl);
 858         if (err > 0)
 859                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 860         err = 0;
 861       __unlock:
 862         up_read(&card->controls_rwsem);
 863         kfree(uctl);
 864         kfree(uinfo);
 865         return err;
 866 }
 867
 868 struct snd_mixer_oss_assign_table {
 869         int oss_id;
 870         const char *name;
 871         int index;
 872 };
 873
 874 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 875 {
 876         struct snd_ctl_elem_info *info;
 877         struct snd_kcontrol *kcontrol;
 878         struct snd_card *card = mixer->card;
 879         int err;
 880
 881         down_read(&card->controls_rwsem);
 882         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 883         if (kcontrol == NULL) {
 884                 up_read(&card->controls_rwsem);
 885                 return 0;
 886         }
 887         info = kmalloc(sizeof(*info), GFP_KERNEL);
 888         if (! info) {
 889                 up_read(&card->controls_rwsem);
 890                 return -ENOMEM;
 891         }
 892         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 893                 up_read(&card->controls_rwsem);
 894                 kfree(info);
 895                 return err;
 896         }
 897         slot->numid[item] = kcontrol->id.numid;
 898         up_read(&card->controls_rwsem);
 899         if (info->count > slot->channels)
 900                 slot->channels = info->count;
 901         slot->present |= 1 << item;
 902         kfree(info);
 903         return 0;
 904 }
 905
 906 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 907 {
 908         struct slot *p = (struct slot *)chn->private_data;
 909         if (p) {
 910                 if (p->allocated && p->assigned) {
 911                         kfree(p->assigned->name);
 912                         kfree(p->assigned);
 913                 }
 914                 kfree(p);
 915         }
 916 }
 917
 918 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 919 {
 920         int idx = rslot->number; /* remember this */
 921         if (rslot->private_free)
 922                 rslot->private_free(rslot);
 923         memset(rslot, 0, sizeof(*rslot));
 924         rslot->number = idx;
 925 }
 926
 927 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 928    snd_mixer_oss_build_input! */
 929 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 930                                         struct snd_mixer_oss_assign_table *ptr,
 931                                         struct slot *slot)
 932 {
 933         char str[64];
 934         int err;
 935
 936         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 937                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 938         if (err)
 939                 return err;
 940         sprintf(str, "%s Switch", ptr->name);
 941         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 942                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 943         if (err)
 944                 return err;
 945         sprintf(str, "%s Route", ptr->name);
 946         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 947                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 948         if (err)
 949                 return err;
 950         sprintf(str, "%s Volume", ptr->name);
 951         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 952                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 953         if (err)
 954                 return err;
 955         sprintf(str, "%s Playback Switch", ptr->name);
 956         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 957                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 958         if (err)
 959                 return err;
 960         sprintf(str, "%s Playback Route", ptr->name);
 961         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 962                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
 963         if (err)
 964                 return err;
 965         sprintf(str, "%s Playback Volume", ptr->name);
 966         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 967                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
 968         if (err)
 969                 return err;
 970         sprintf(str, "%s Capture Switch", ptr->name);
 971         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 972                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
 973         if (err)
 974                 return err;
 975         sprintf(str, "%s Capture Route", ptr->name);
 976         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 977                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
 978         if (err)
 979                 return err;
 980         sprintf(str, "%s Capture Volume", ptr->name);
 981         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 982                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
 983         if (err)
 984                 return err;
 985
 986         return 0;
 987 }
 988
 989 /*
 990  * build an OSS mixer element.
 991  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 992  * when replace_old = 1, the old entry is replaced with the new one.
 993  */
 994 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)
 995 {
 996         struct slot slot;
 997         struct slot *pslot;
 998         struct snd_kcontrol *kctl;
 999         struct snd_mixer_oss_slot *rslot;
1000         char str[64];
1001
1002         /* check if already assigned */
1003         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1004                 return 0;
1005
1006         memset(&slot, 0, sizeof(slot));
1007         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1008         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1009                 return 0;
1010         down_read(&mixer->card->controls_rwsem);
1011         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1012                 struct snd_ctl_elem_info *uinfo;
1013
1014                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1015                 if (! uinfo) {
1016                         up_read(&mixer->card->controls_rwsem);
1017                         return -ENOMEM;
1018                 }
1019
1020                 if (kctl->info(kctl, uinfo)) {
1021                         up_read(&mixer->card->controls_rwsem);
1022                         return 0;
1023                 }
1024                 strcpy(str, ptr->name);
1025                 if (!strcmp(str, "Master"))
1026                         strcpy(str, "Mix");
1027                 if (!strcmp(str, "Master Mono"))
1028                         strcpy(str, "Mix Mono");
1029                 slot.capture_item = 0;
1030                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1031                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1032                 } else {
1033                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1034                                 uinfo->value.enumerated.item = slot.capture_item;
1035                                 if (kctl->info(kctl, uinfo)) {
1036                                         up_read(&mixer->card->controls_rwsem);
1037                                         return 0;
1038                                 }
1039                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1040                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1041                                         break;
1042                                 }
1043                         }
1044                 }
1045                 kfree(uinfo);
1046         }
1047         up_read(&mixer->card->controls_rwsem);
1048         if (slot.present != 0) {
1049                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1050                 if (! pslot)
1051                         return -ENOMEM;
1052                 *pslot = slot;
1053                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1054                 pslot->assigned = ptr;
1055                 pslot->allocated = ptr_allocated;
1056                 rslot = &mixer->slots[ptr->oss_id];
1057                 mixer_slot_clear(rslot);
1058                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1059                 rslot->get_volume = snd_mixer_oss_get_volume1;
1060                 rslot->put_volume = snd_mixer_oss_put_volume1;
1061                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1062                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1063                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1064                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1065                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1066                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1067                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1068                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1069                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1070                 }
1071                 rslot->private_data = pslot;
1072                 rslot->private_free = snd_mixer_oss_slot_free;
1073                 return 1;
1074         }
1075         return 0;
1076 }
1077
1078 #ifdef CONFIG_PROC_FS
1079 /*
1080  */
1081 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1082 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1083         MIXER_VOL(VOLUME),
1084         MIXER_VOL(BASS),
1085         MIXER_VOL(TREBLE),
1086         MIXER_VOL(SYNTH),
1087         MIXER_VOL(PCM),
1088         MIXER_VOL(SPEAKER),
1089         MIXER_VOL(LINE),
1090         MIXER_VOL(MIC),
1091         MIXER_VOL(CD),
1092         MIXER_VOL(IMIX),
1093         MIXER_VOL(ALTPCM),
1094         MIXER_VOL(RECLEV),
1095         MIXER_VOL(IGAIN),
1096         MIXER_VOL(OGAIN),
1097         MIXER_VOL(LINE1),
1098         MIXER_VOL(LINE2),
1099         MIXER_VOL(LINE3),
1100         MIXER_VOL(DIGITAL1),
1101         MIXER_VOL(DIGITAL2),
1102         MIXER_VOL(DIGITAL3),
1103         MIXER_VOL(PHONEIN),
1104         MIXER_VOL(PHONEOUT),
1105         MIXER_VOL(VIDEO),
1106         MIXER_VOL(RADIO),
1107         MIXER_VOL(MONITOR),
1108 };
1109
1110 /*
1111  *  /proc interface
1112  */
1113
1114 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1115                                     struct snd_info_buffer *buffer)
1116 {
1117         struct snd_mixer_oss *mixer = entry->private_data;
1118         int i;
1119
1120         mutex_lock(&mixer->reg_mutex);
1121         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1122                 struct slot *p;
1123
1124                 if (! oss_mixer_names[i])
1125                         continue;
1126                 p = (struct slot *)mixer->slots[i].private_data;
1127                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1128                 if (p && p->assigned)
1129                         snd_iprintf(buffer, "\"%s\" %d\n",
1130                                     p->assigned->name,
1131                                     p->assigned->index);
1132                 else
1133                         snd_iprintf(buffer, "\"\" 0\n");
1134         }
1135         mutex_unlock(&mixer->reg_mutex);
1136 }
1137
1138 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1139                                      struct snd_info_buffer *buffer)
1140 {
1141         struct snd_mixer_oss *mixer = entry->private_data;
1142         char line[128], str[32], idxstr[16], *cptr;
1143         int ch, idx;
1144         struct snd_mixer_oss_assign_table *tbl;
1145         struct slot *slot;
1146
1147         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1148                 cptr = snd_info_get_str(str, line, sizeof(str));
1149                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1150                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1151                                 break;
1152                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1153                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1154                         continue;
1155                 }
1156                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1157                 if (! *str) {
1158                         /* remove the entry */
1159                         mutex_lock(&mixer->reg_mutex);
1160                         mixer_slot_clear(&mixer->slots[ch]);
1161                         mutex_unlock(&mixer->reg_mutex);
1162                         continue;
1163                 }
1164                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1165                 idx = simple_strtoul(idxstr, NULL, 10);
1166                 if (idx >= 0x4000) { /* too big */
1167                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1168                         continue;
1169                 }
1170                 mutex_lock(&mixer->reg_mutex);
1171                 slot = (struct slot *)mixer->slots[ch].private_data;
1172                 if (slot && slot->assigned &&
1173                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1174                         /* not changed */
1175                         goto __unlock;
1176                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1177                 if (! tbl) {
1178                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1179                         goto __unlock;
1180                 }
1181                 tbl->oss_id = ch;
1182                 tbl->name = kstrdup(str, GFP_KERNEL);
1183                 if (! tbl->name) {
1184                         kfree(tbl);
1185                         goto __unlock;
1186                 }
1187                 tbl->index = idx;
1188                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1189                         kfree(tbl->name);
1190                         kfree(tbl);
1191                 }
1192         __unlock:
1193                 mutex_unlock(&mixer->reg_mutex);
1194         }
1195 }
1196
1197 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1198 {
1199         struct snd_info_entry *entry;
1200
1201         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1202                                            mixer->card->proc_root);
1203         if (! entry)
1204                 return;
1205         entry->content = SNDRV_INFO_CONTENT_TEXT;
1206         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1207         entry->c.text.read = snd_mixer_oss_proc_read;
1208         entry->c.text.write = snd_mixer_oss_proc_write;
1209         entry->private_data = mixer;
1210         if (snd_info_register(entry) < 0) {
1211                 snd_info_free_entry(entry);
1212                 entry = NULL;
1213         }
1214         mixer->proc_entry = entry;
1215 }
1216
1217 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1218 {
1219         snd_info_free_entry(mixer->proc_entry);
1220         mixer->proc_entry = NULL;
1221 }
1222 #else /* !CONFIG_PROC_FS */
1223 #define snd_mixer_oss_proc_init(mix)
1224 #define snd_mixer_oss_proc_done(mix)
1225 #endif /* CONFIG_PROC_FS */
1226
1227 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1228 {
1229         static struct snd_mixer_oss_assign_table table[] = {
1230                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1231                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1232                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1233                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1234                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1235                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1236                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1237                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1238                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1239                 { SOUND_MIXER_LINE,     "Line",                 0 },
1240                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1241                 { SOUND_MIXER_CD,       "CD",                   0 },
1242                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1243                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1244                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1245                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1246                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1247                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1248                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1249                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1250                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1251                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1252                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1253                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1254                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1255                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1256                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1257                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1258                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1259                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1260                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1261                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1262                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1263                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1264                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1265                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1266         };
1267         unsigned int idx;
1268
1269         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1270                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1271         if (mixer->mask_recsrc) {
1272                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1273                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1274         }
1275 }
1276
1277 /*
1278  *
1279  */
1280
1281 static int snd_mixer_oss_free1(void *private)
1282 {
1283         struct snd_mixer_oss *mixer = private;
1284         struct snd_card *card;
1285         int idx;
1286
1287         snd_assert(mixer != NULL, return -ENXIO);
1288         card = mixer->card;
1289         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1290         card->mixer_oss = NULL;
1291         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1292                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1293                 if (chn->private_free)
1294                         chn->private_free(chn);
1295         }
1296         kfree(mixer);
1297         return 0;
1298 }
1299
1300 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1301 {
1302         struct snd_mixer_oss *mixer;
1303
1304         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1305                 char name[128];
1306                 int idx, err;
1307
1308                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1309                 if (mixer == NULL)
1310                         return -ENOMEM;
1311                 mutex_init(&mixer->reg_mutex);
1312                 sprintf(name, "mixer%i%i", card->number, 0);
1313                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1314                                                    card, 0,
1315                                                    &snd_mixer_oss_f_ops, card,
1316                                                    name)) < 0) {
1317                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1318                                    card->number, 0);
1319                         kfree(mixer);
1320                         return err;
1321                 }
1322                 mixer->oss_dev_alloc = 1;
1323                 mixer->card = card;
1324                 if (*card->mixername)
1325                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1326                 else
1327                         strlcpy(mixer->name, name, sizeof(mixer->name));
1328 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1329                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1330                                       card->number,
1331                                       mixer->name);
1332 #endif
1333                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1334                         mixer->slots[idx].number = idx;
1335                 card->mixer_oss = mixer;
1336                 snd_mixer_oss_build(mixer);
1337                 snd_mixer_oss_proc_init(mixer);
1338         } else {
1339                 mixer = card->mixer_oss;
1340                 if (mixer == NULL)
1341                         return 0;
1342                 if (mixer->oss_dev_alloc) {
1343 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1344                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1345 #endif
1346                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1347                         mixer->oss_dev_alloc = 0;
1348                 }
1349                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1350                         return 0;
1351                 snd_mixer_oss_proc_done(mixer);
1352                 return snd_mixer_oss_free1(mixer);
1353         }
1354         return 0;
1355 }
1356
1357 static int __init alsa_mixer_oss_init(void)
1358 {
1359         int idx;
1360
1361         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1362         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1363                 if (snd_cards[idx])
1364                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1365         }
1366         return 0;
1367 }
1368
1369 static void __exit alsa_mixer_oss_exit(void)
1370 {
1371         int idx;
1372
1373         snd_mixer_oss_notify_callback = NULL;
1374         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1375                 if (snd_cards[idx])
1376                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1377         }
1378 }
1379
1380 module_init(alsa_mixer_oss_init)
1381 module_exit(alsa_mixer_oss_exit)
1382
1383 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);