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   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/smp_lock.h>
  25 #include <linux/slab.h>
  26 #include <linux/time.h>
  27 #include <linux/string.h>
  28 #include <sound/core.h>
  29 #include <sound/minors.h>
  30 #include <sound/control.h>
  31 #include <sound/info.h>
  32 #include <sound/mixer_oss.h>
  33 #include <linux/soundcard.h>
  34
  35 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  36
  37 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  38 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  39 MODULE_LICENSE("GPL");
  40 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  41
  42 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  43 {
  44         int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
  45         snd_card_t *card;
  46         snd_mixer_oss_file_t *fmixer;
  47         int err;
  48
  49         if ((card = snd_cards[cardnum]) == NULL)
  50                 return -ENODEV;
  51         if (card->mixer_oss == NULL)
  52                 return -ENODEV;
  53         err = snd_card_file_add(card, file);
  54         if (err < 0)
  55                 return err;
  56         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  57         if (fmixer == NULL) {
  58                 snd_card_file_remove(card, file);
  59                 return -ENOMEM;
  60         }
  61         fmixer->card = card;
  62         fmixer->mixer = card->mixer_oss;
  63         file->private_data = fmixer;
  64         if (!try_module_get(card->module)) {
  65                 kfree(fmixer);
  66                 snd_card_file_remove(card, file);
  67                 return -EFAULT;
  68         }
  69         return 0;
  70 }
  71
  72 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  73 {
  74         snd_mixer_oss_file_t *fmixer;
  75
  76         if (file->private_data) {
  77                 fmixer = (snd_mixer_oss_file_t *) file->private_data;
  78                 module_put(fmixer->card->module);
  79                 snd_card_file_remove(fmixer->card, file);
  80                 kfree(fmixer);
  81         }
  82         return 0;
  83 }
  84
  85 static int snd_mixer_oss_info(snd_mixer_oss_file_t *fmixer,
  86                               mixer_info __user *_info)
  87 {
  88         snd_card_t *card = fmixer->card;
  89         snd_mixer_oss_t *mixer = fmixer->mixer;
  90         struct mixer_info info;
  91
  92         memset(&info, 0, sizeof(info));
  93         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
  94         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
  95         info.modify_counter = card->mixer_oss_change_count;
  96         if (copy_to_user(_info, &info, sizeof(info)))
  97                 return -EFAULT;
  98         return 0;
  99 }
 100
 101 static int snd_mixer_oss_info_obsolete(snd_mixer_oss_file_t *fmixer,
 102                                        _old_mixer_info __user *_info)
 103 {
 104         snd_card_t *card = fmixer->card;
 105         snd_mixer_oss_t *mixer = fmixer->mixer;
 106         _old_mixer_info info;
 107
 108         memset(&info, 0, sizeof(info));
 109         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 110         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 111         if (copy_to_user(_info, &info, sizeof(info)))
 112                 return -EFAULT;
 113         return 0;
 114 }
 115
 116 static int snd_mixer_oss_caps(snd_mixer_oss_file_t *fmixer)
 117 {
 118         snd_mixer_oss_t *mixer = fmixer->mixer;
 119         int result = 0;
 120
 121         if (mixer == NULL)
 122                 return -EIO;
 123         if (mixer->get_recsrc && mixer->put_recsrc)
 124                 result |= SOUND_CAP_EXCL_INPUT;
 125         return result;
 126 }
 127
 128 static int snd_mixer_oss_devmask(snd_mixer_oss_file_t *fmixer)
 129 {
 130         snd_mixer_oss_t *mixer = fmixer->mixer;
 131         snd_mixer_oss_slot_t *pslot;
 132         int result = 0, chn;
 133
 134         if (mixer == NULL)
 135                 return -EIO;
 136         for (chn = 0; chn < 31; chn++) {
 137                 pslot = &mixer->slots[chn];
 138                 if (pslot->put_volume || pslot->put_recsrc)
 139                         result |= 1 << chn;
 140         }
 141         return result;
 142 }
 143
 144 static int snd_mixer_oss_stereodevs(snd_mixer_oss_file_t *fmixer)
 145 {
 146         snd_mixer_oss_t *mixer = fmixer->mixer;
 147         snd_mixer_oss_slot_t *pslot;
 148         int result = 0, chn;
 149
 150         if (mixer == NULL)
 151                 return -EIO;
 152         for (chn = 0; chn < 31; chn++) {
 153                 pslot = &mixer->slots[chn];
 154                 if (pslot->put_volume && pslot->stereo)
 155                         result |= 1 << chn;
 156         }
 157         return result;
 158 }
 159
 160 static int snd_mixer_oss_recmask(snd_mixer_oss_file_t *fmixer)
 161 {
 162         snd_mixer_oss_t *mixer = fmixer->mixer;
 163         int result = 0;
 164
 165         if (mixer == NULL)
 166                 return -EIO;
 167         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 168                 result = mixer->mask_recsrc;
 169         } else {
 170                 snd_mixer_oss_slot_t *pslot;
 171                 int chn;
 172                 for (chn = 0; chn < 31; chn++) {
 173                         pslot = &mixer->slots[chn];
 174                         if (pslot->put_recsrc)
 175                                 result |= 1 << chn;
 176                 }
 177         }
 178         return result;
 179 }
 180
 181 static int snd_mixer_oss_get_recsrc(snd_mixer_oss_file_t *fmixer)
 182 {
 183         snd_mixer_oss_t *mixer = fmixer->mixer;
 184         int result = 0;
 185
 186         if (mixer == NULL)
 187                 return -EIO;
 188         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 189                 int err;
 190                 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
 191                         return err;
 192                 result = 1 << result;
 193         } else {
 194                 snd_mixer_oss_slot_t *pslot;
 195                 int chn;
 196                 for (chn = 0; chn < 31; chn++) {
 197                         pslot = &mixer->slots[chn];
 198                         if (pslot->get_recsrc) {
 199                                 int active = 0;
 200                                 pslot->get_recsrc(fmixer, pslot, &active);
 201                                 if (active)
 202                                         result |= 1 << chn;
 203                         }
 204                 }
 205         }
 206         return mixer->oss_recsrc = result;
 207 }
 208
 209 static int snd_mixer_oss_set_recsrc(snd_mixer_oss_file_t *fmixer, int recsrc)
 210 {
 211         snd_mixer_oss_t *mixer = fmixer->mixer;
 212         snd_mixer_oss_slot_t *pslot;
 213         int chn, active;
 214         int result = 0;
 215
 216         if (mixer == NULL)
 217                 return -EIO;
 218         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 219                 if (recsrc & ~mixer->oss_recsrc)
 220                         recsrc &= ~mixer->oss_recsrc;
 221                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 222                 mixer->get_recsrc(fmixer, &result);
 223                 result = 1 << result;
 224         }
 225         for (chn = 0; chn < 31; chn++) {
 226                 pslot = &mixer->slots[chn];
 227                 if (pslot->put_recsrc) {
 228                         active = (recsrc & (1 << chn)) ? 1 : 0;
 229                         pslot->put_recsrc(fmixer, pslot, active);
 230                 }
 231         }
 232         if (! result) {
 233                 for (chn = 0; chn < 31; chn++) {
 234                         pslot = &mixer->slots[chn];
 235                         if (pslot->get_recsrc) {
 236                                 active = 0;
 237                                 pslot->get_recsrc(fmixer, pslot, &active);
 238                                 if (active)
 239                                         result |= 1 << chn;
 240                         }
 241                 }
 242         }
 243         return result;
 244 }
 245
 246 static int snd_mixer_oss_get_volume(snd_mixer_oss_file_t *fmixer, int slot)
 247 {
 248         snd_mixer_oss_t *mixer = fmixer->mixer;
 249         snd_mixer_oss_slot_t *pslot;
 250         int result = 0, left, right;
 251
 252         if (mixer == NULL || slot > 30)
 253                 return -EIO;
 254         pslot = &mixer->slots[slot];
 255         left = pslot->volume[0];
 256         right = pslot->volume[1];
 257         if (pslot->get_volume)
 258                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 259         if (!pslot->stereo)
 260                 right = left;
 261         snd_assert(left >= 0 && left <= 100, return -EIO);
 262         snd_assert(right >= 0 && right <= 100, return -EIO);
 263         if (result >= 0) {
 264                 pslot->volume[0] = left;
 265                 pslot->volume[1] = right;
 266                 result = (left & 0xff) | ((right & 0xff) << 8);
 267         }
 268         return result;
 269 }
 270
 271 static int snd_mixer_oss_set_volume(snd_mixer_oss_file_t *fmixer,
 272                                     int slot, int volume)
 273 {
 274         snd_mixer_oss_t *mixer = fmixer->mixer;
 275         snd_mixer_oss_slot_t *pslot;
 276         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 277
 278         if (mixer == NULL || slot > 30)
 279                 return -EIO;
 280         pslot = &mixer->slots[slot];
 281         if (left > 100)
 282                 left = 100;
 283         if (right > 100)
 284                 right = 100;
 285         if (!pslot->stereo)
 286                 right = left;
 287         if (pslot->put_volume)
 288                 result = pslot->put_volume(fmixer, pslot, left, right);
 289         if (result < 0)
 290                 return result;
 291         pslot->volume[0] = left;
 292         pslot->volume[1] = right;
 293         return (left & 0xff) | ((right & 0xff) << 8);
 294 }
 295
 296 static int snd_mixer_oss_ioctl1(snd_mixer_oss_file_t *fmixer, unsigned int cmd, unsigned long arg)
 297 {
 298         void __user *argp = (void __user *)arg;
 299         int __user *p = argp;
 300         int tmp;
 301
 302         snd_assert(fmixer != NULL, return -ENXIO);
 303         if (((cmd >> 8) & 0xff) == 'M') {
 304                 switch (cmd) {
 305                 case SOUND_MIXER_INFO:
 306                         return snd_mixer_oss_info(fmixer, argp);
 307                 case SOUND_OLD_MIXER_INFO:
 308                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 309                 case SOUND_MIXER_WRITE_RECSRC:
 310                         if (get_user(tmp, p))
 311                                 return -EFAULT;
 312                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 313                         if (tmp < 0)
 314                                 return tmp;
 315                         return put_user(tmp, p);
 316                 case OSS_GETVERSION:
 317                         return put_user(SNDRV_OSS_VERSION, p);
 318                 case OSS_ALSAEMULVER:
 319                         return put_user(1, p);
 320                 case SOUND_MIXER_READ_DEVMASK:
 321                         tmp = snd_mixer_oss_devmask(fmixer);
 322                         if (tmp < 0)
 323                                 return tmp;
 324                         return put_user(tmp, p);
 325                 case SOUND_MIXER_READ_STEREODEVS:
 326                         tmp = snd_mixer_oss_stereodevs(fmixer);
 327                         if (tmp < 0)
 328                                 return tmp;
 329                         return put_user(tmp, p);
 330                 case SOUND_MIXER_READ_RECMASK:
 331                         tmp = snd_mixer_oss_recmask(fmixer);
 332                         if (tmp < 0)
 333                                 return tmp;
 334                         return put_user(tmp, p);
 335                 case SOUND_MIXER_READ_CAPS:
 336                         tmp = snd_mixer_oss_caps(fmixer);
 337                         if (tmp < 0)
 338                                 return tmp;
 339                         return put_user(tmp, p);
 340                 case SOUND_MIXER_READ_RECSRC:
 341                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 342                         if (tmp < 0)
 343                                 return tmp;
 344                         return put_user(tmp, p);
 345                 }
 346         }
 347         if (cmd & SIOC_IN) {
 348                 if (get_user(tmp, p))
 349                         return -EFAULT;
 350                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 351                 if (tmp < 0)
 352                         return tmp;
 353                 return put_user(tmp, p);
 354         } else if (cmd & SIOC_OUT) {
 355                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 356                 if (tmp < 0)
 357                         return tmp;
 358                 return put_user(tmp, p);
 359         }
 360         return -ENXIO;
 361 }
 362
 363 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 364 {
 365         return snd_mixer_oss_ioctl1((snd_mixer_oss_file_t *) file->private_data, cmd, arg);
 366 }
 367
 368 int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg)
 369 {
 370         snd_mixer_oss_file_t fmixer;
 371
 372         snd_assert(card != NULL, return -ENXIO);
 373         if (card->mixer_oss == NULL)
 374                 return -ENXIO;
 375         memset(&fmixer, 0, sizeof(fmixer));
 376         fmixer.card = card;
 377         fmixer.mixer = card->mixer_oss;
 378         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 379 }
 380
 381 #ifdef CONFIG_COMPAT
 382 /* all compatible */
 383 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 384 #else
 385 #define snd_mixer_oss_ioctl_compat      NULL
 386 #endif
 387
 388 /*
 389  *  REGISTRATION PART
 390  */
 391
 392 static struct file_operations snd_mixer_oss_f_ops =
 393 {
 394         .owner =        THIS_MODULE,
 395         .open =         snd_mixer_oss_open,
 396         .release =      snd_mixer_oss_release,
 397         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 398         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 399 };
 400
 401 static snd_minor_t snd_mixer_oss_reg =
 402 {
 403         .comment =      "mixer",
 404         .f_ops =        &snd_mixer_oss_f_ops,
 405 };
 406
 407 /*
 408  *  utilities
 409  */
 410
 411 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 412 {
 413         long orange = omax - omin, nrange = nmax - nmin;
 414
 415         if (orange == 0)
 416                 return 0;
 417         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 418 }
 419
 420 /* convert from alsa native to oss values (0-100) */
 421 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 422 {
 423         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 424                 return *old;
 425         return snd_mixer_oss_conv(val, min, max, 0, 100);
 426 }
 427
 428 /* convert from oss to alsa native values */
 429 static long snd_mixer_oss_conv2(long val, long min, long max)
 430 {
 431         return snd_mixer_oss_conv(val, 0, 100, min, max);
 432 }
 433
 434 #if 0
 435 static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot)
 436 {
 437         snd_mixer_oss_t *mixer = card->mixer_oss;
 438         if (mixer)
 439                 mixer->mask_recsrc |= 1 << slot;
 440 }
 441
 442 static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot)
 443 {
 444         snd_mixer_oss_t *mixer = card->mixer_oss;
 445         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 446                 return 1;
 447         return 0;
 448 }
 449 #endif
 450
 451 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 452
 453 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 454 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 455 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 456 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 457 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 458 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 459 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 460 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 461 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 462 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 463 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 464
 465 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 466
 467 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 468 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 469 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 470 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 471 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 472 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 473 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 474 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 475 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 476 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 477 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 478
 479 struct slot {
 480         unsigned int signature;
 481         unsigned int present;
 482         unsigned int channels;
 483         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 484         unsigned int capture_item;
 485         struct snd_mixer_oss_assign_table *assigned;
 486         unsigned int allocated: 1;
 487 };
 488
 489 #define ID_UNKNOWN      ((unsigned int)-1)
 490
 491 static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index)
 492 {
 493         snd_card_t * card = mixer->card;
 494         snd_ctl_elem_id_t id;
 495
 496         memset(&id, 0, sizeof(id));
 497         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 498         strcpy(id.name, name);
 499         id.index = index;
 500         return snd_ctl_find_id(card, &id);
 501 }
 502
 503 static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer,
 504                                           snd_mixer_oss_slot_t *pslot,
 505                                           unsigned int numid,
 506                                           int *left, int *right)
 507 {
 508         snd_ctl_elem_info_t *uinfo;
 509         snd_ctl_elem_value_t *uctl;
 510         snd_kcontrol_t *kctl;
 511         snd_card_t *card = fmixer->card;
 512
 513         if (numid == ID_UNKNOWN)
 514                 return;
 515         down_read(&card->controls_rwsem);
 516         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 517                 up_read(&card->controls_rwsem);
 518                 return;
 519         }
 520         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 521         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 522         if (uinfo == NULL || uctl == NULL)
 523                 goto __unalloc;
 524         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 525         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 526         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
 527         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 528         if (uinfo->count > 1)
 529                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 530       __unalloc:
 531         up_read(&card->controls_rwsem);
 532         kfree(uctl);
 533         kfree(uinfo);
 534 }
 535
 536 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
 537                                          snd_mixer_oss_slot_t *pslot,
 538                                          unsigned int numid,
 539                                          int *left, int *right,
 540                                          int route)
 541 {
 542         snd_ctl_elem_info_t *uinfo;
 543         snd_ctl_elem_value_t *uctl;
 544         snd_kcontrol_t *kctl;
 545         snd_card_t *card = fmixer->card;
 546
 547         if (numid == ID_UNKNOWN)
 548                 return;
 549         down_read(&card->controls_rwsem);
 550         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 551                 up_read(&card->controls_rwsem);
 552                 return;
 553         }
 554         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 555         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 556         if (uinfo == NULL || uctl == NULL)
 557                 goto __unalloc;
 558         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 559         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 560         if (!uctl->value.integer.value[0]) {
 561                 *left = 0;
 562                 if (uinfo->count == 1)
 563                         *right = 0;
 564         }
 565         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 566                 *right = 0;
 567       __unalloc:
 568         up_read(&card->controls_rwsem);
 569         kfree(uctl);
 570         kfree(uinfo);
 571 }
 572
 573 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
 574                                      snd_mixer_oss_slot_t *pslot,
 575                                      int *left, int *right)
 576 {
 577         struct slot *slot = (struct slot *)pslot->private_data;
 578
 579         *left = *right = 100;
 580         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 581                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 582         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 583                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 584         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 585                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 586         }
 587         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 588                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 589         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 590                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 591         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 592                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 593         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 594                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 595         }
 596         return 0;
 597 }
 598
 599 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
 600                                           snd_mixer_oss_slot_t *pslot,
 601                                           unsigned int numid,
 602                                           int left, int right)
 603 {
 604         snd_ctl_elem_info_t *uinfo;
 605         snd_ctl_elem_value_t *uctl;
 606         snd_kcontrol_t *kctl;
 607         snd_card_t *card = fmixer->card;
 608         int res;
 609
 610         if (numid == ID_UNKNOWN)
 611                 return;
 612         down_read(&card->controls_rwsem);
 613         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 614                 return;
 615         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 616         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 617         if (uinfo == NULL || uctl == NULL)
 618                 goto __unalloc;
 619         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 620         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
 621         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 622         if (uinfo->count > 1)
 623                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 624         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 625         if (res > 0)
 626                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 627       __unalloc:
 628         up_read(&card->controls_rwsem);
 629         kfree(uctl);
 630         kfree(uinfo);
 631 }
 632
 633 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
 634                                          snd_mixer_oss_slot_t *pslot,
 635                                          unsigned int numid,
 636                                          int left, int right,
 637                                          int route)
 638 {
 639         snd_ctl_elem_info_t *uinfo;
 640         snd_ctl_elem_value_t *uctl;
 641         snd_kcontrol_t *kctl;
 642         snd_card_t *card = fmixer->card;
 643         int res;
 644
 645         if (numid == ID_UNKNOWN)
 646                 return;
 647         down_read(&card->controls_rwsem);
 648         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 649                 up_read(&fmixer->card->controls_rwsem);
 650                 return;
 651         }
 652         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 653         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 654         if (uinfo == NULL || uctl == NULL)
 655                 goto __unalloc;
 656         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 657         if (uinfo->count > 1) {
 658                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 659                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 660                 if (route) {
 661                         uctl->value.integer.value[1] =
 662                         uctl->value.integer.value[2] = 0;
 663                 }
 664         } else {
 665                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 666         }
 667         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 668         if (res > 0)
 669                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 670       __unalloc:
 671         up_read(&card->controls_rwsem);
 672         kfree(uctl);
 673         kfree(uinfo);
 674 }
 675
 676 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
 677                                      snd_mixer_oss_slot_t *pslot,
 678                                      int left, int right)
 679 {
 680         struct slot *slot = (struct slot *)pslot->private_data;
 681
 682         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 683                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 684                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 685                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 686         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 687                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 688         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 689                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 690         }
 691         if (left || right) {
 692                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 693                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 694                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 695                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 696                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 697                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 698                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 699                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 700         } else {
 701                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 702                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 703                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 704                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 705                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 706                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 707                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 708                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 709                 }
 710         }
 711         return 0;
 712 }
 713
 714 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 715                                         snd_mixer_oss_slot_t *pslot,
 716                                         int *active)
 717 {
 718         struct slot *slot = (struct slot *)pslot->private_data;
 719         int left, right;
 720
 721         left = right = 1;
 722         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 723         *active = (left || right) ? 1 : 0;
 724         return 0;
 725 }
 726
 727 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 728                                            snd_mixer_oss_slot_t *pslot,
 729                                            int *active)
 730 {
 731         struct slot *slot = (struct slot *)pslot->private_data;
 732         int left, right;
 733
 734         left = right = 1;
 735         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 736         *active = (left || right) ? 1 : 0;
 737         return 0;
 738 }
 739
 740 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 741                                         snd_mixer_oss_slot_t *pslot,
 742                                         int active)
 743 {
 744         struct slot *slot = (struct slot *)pslot->private_data;
 745
 746         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 747         return 0;
 748 }
 749
 750 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 751                                            snd_mixer_oss_slot_t *pslot,
 752                                            int active)
 753 {
 754         struct slot *slot = (struct slot *)pslot->private_data;
 755
 756         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 757         return 0;
 758 }
 759
 760 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
 761 {
 762         snd_card_t *card = fmixer->card;
 763         snd_mixer_oss_t *mixer = fmixer->mixer;
 764         snd_kcontrol_t *kctl;
 765         snd_mixer_oss_slot_t *pslot;
 766         struct slot *slot;
 767         snd_ctl_elem_info_t *uinfo;
 768         snd_ctl_elem_value_t *uctl;
 769         int err, idx;
 770
 771         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 772         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 773         if (uinfo == NULL || uctl == NULL) {
 774                 err = -ENOMEM;
 775                 goto __unlock;
 776         }
 777         down_read(&card->controls_rwsem);
 778         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 779         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 780         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 781         snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock);
 782         for (idx = 0; idx < 32; idx++) {
 783                 if (!(mixer->mask_recsrc & (1 << idx)))
 784                         continue;
 785                 pslot = &mixer->slots[idx];
 786                 slot = (struct slot *)pslot->private_data;
 787                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 788                         continue;
 789                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 790                         continue;
 791                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 792                         *active_index = idx;
 793                         break;
 794                 }
 795         }
 796         err = 0;
 797       __unlock:
 798         up_read(&card->controls_rwsem);
 799         kfree(uctl);
 800         kfree(uinfo);
 801         return err;
 802 }
 803
 804 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
 805 {
 806         snd_card_t *card = fmixer->card;
 807         snd_mixer_oss_t *mixer = fmixer->mixer;
 808         snd_kcontrol_t *kctl;
 809         snd_mixer_oss_slot_t *pslot;
 810         struct slot *slot = NULL;
 811         snd_ctl_elem_info_t *uinfo;
 812         snd_ctl_elem_value_t *uctl;
 813         int err;
 814         unsigned int idx;
 815
 816         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 817         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 818         if (uinfo == NULL || uctl == NULL) {
 819                 err = -ENOMEM;
 820                 goto __unlock;
 821         }
 822         down_read(&card->controls_rwsem);
 823         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 824         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 825         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 826         for (idx = 0; idx < 32; idx++) {
 827                 if (!(mixer->mask_recsrc & (1 << idx)))
 828                         continue;
 829                 pslot = &mixer->slots[idx];
 830                 slot = (struct slot *)pslot->private_data;
 831                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 832                         continue;
 833                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 834                         continue;
 835                 if (idx == active_index)
 836                         break;
 837                 slot = NULL;
 838         }
 839         snd_runtime_check(slot != NULL, goto __unlock);
 840         for (idx = 0; idx < uinfo->count; idx++)
 841                 uctl->value.enumerated.item[idx] = slot->capture_item;
 842         snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, );
 843         if (err > 0)
 844                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 845         err = 0;
 846       __unlock:
 847         up_read(&card->controls_rwsem);
 848         kfree(uctl);
 849         kfree(uinfo);
 850         return err;
 851 }
 852
 853 struct snd_mixer_oss_assign_table {
 854         int oss_id;
 855         const char *name;
 856         int index;
 857 };
 858
 859 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
 860 {
 861         snd_ctl_elem_info_t *info;
 862         snd_kcontrol_t *kcontrol;
 863         snd_card_t *card = mixer->card;
 864         int err;
 865
 866         down_read(&card->controls_rwsem);
 867         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 868         if (kcontrol == NULL) {
 869                 up_read(&card->controls_rwsem);
 870                 return 0;
 871         }
 872         info = kmalloc(sizeof(*info), GFP_KERNEL);
 873         if (! info) {
 874                 up_read(&card->controls_rwsem);
 875                 return -ENOMEM;
 876         }
 877         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 878                 up_read(&card->controls_rwsem);
 879                 kfree(info);
 880                 return err;
 881         }
 882         slot->numid[item] = kcontrol->id.numid;
 883         up_read(&card->controls_rwsem);
 884         if (info->count > slot->channels)
 885                 slot->channels = info->count;
 886         slot->present |= 1 << item;
 887         kfree(info);
 888         return 0;
 889 }
 890
 891 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
 892 {
 893         struct slot *p = (struct slot *)chn->private_data;
 894         if (p) {
 895                 if (p->allocated && p->assigned) {
 896                         kfree(p->assigned->name);
 897                         kfree(p->assigned);
 898                 }
 899                 kfree(p);
 900         }
 901 }
 902
 903 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
 904 {
 905         int idx = rslot->number; /* remember this */
 906         if (rslot->private_free)
 907                 rslot->private_free(rslot);
 908         memset(rslot, 0, sizeof(*rslot));
 909         rslot->number = idx;
 910 }
 911
 912 /*
 913  * build an OSS mixer element.
 914  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 915  * when replace_old = 1, the old entry is replaced with the new one.
 916  */
 917 static int snd_mixer_oss_build_input(snd_mixer_oss_t *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
 918 {
 919         struct slot slot;
 920         struct slot *pslot;
 921         snd_kcontrol_t *kctl;
 922         snd_mixer_oss_slot_t *rslot;
 923         char str[64];
 924
 925         /* check if already assigned */
 926         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
 927                 return 0;
 928
 929         memset(&slot, 0, sizeof(slot));
 930         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
 931         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
 932                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
 933                 return 0;
 934         sprintf(str, "%s Switch", ptr->name);
 935         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 936                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
 937                 return 0;
 938         sprintf(str, "%s Route", ptr->name);
 939         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 940                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
 941                 return 0;
 942         sprintf(str, "%s Volume", ptr->name);
 943         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 944                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
 945                 return 0;
 946         sprintf(str, "%s Playback Switch", ptr->name);
 947         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 948                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
 949                 return 0;
 950         sprintf(str, "%s Playback Route", ptr->name);
 951         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 952                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
 953                 return 0;
 954         sprintf(str, "%s Playback Volume", ptr->name);
 955         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 956                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
 957                 return 0;
 958         sprintf(str, "%s Capture Switch", ptr->name);
 959         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 960                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
 961                 return 0;
 962         sprintf(str, "%s Capture Route", ptr->name);
 963         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 964                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
 965                 return 0;
 966         sprintf(str, "%s Capture Volume", ptr->name);
 967         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 968                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
 969                 return 0;
 970         down_read(&mixer->card->controls_rwsem);
 971         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
 972                 snd_ctl_elem_info_t *uinfo;
 973
 974                 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
 975                 if (! uinfo) {
 976                         up_read(&mixer->card->controls_rwsem);
 977                         return -ENOMEM;
 978                 }
 979
 980                 memset(uinfo, 0, sizeof(*uinfo));
 981                 if (kctl->info(kctl, uinfo)) {
 982                         up_read(&mixer->card->controls_rwsem);
 983                         return 0;
 984                 }
 985                 strcpy(str, ptr->name);
 986                 if (!strcmp(str, "Master"))
 987                         strcpy(str, "Mix");
 988                 if (!strcmp(str, "Master Mono"))
 989                         strcpy(str, "Mix Mono");
 990                 slot.capture_item = 0;
 991                 if (!strcmp(uinfo->value.enumerated.name, str)) {
 992                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
 993                 } else {
 994                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
 995                                 uinfo->value.enumerated.item = slot.capture_item;
 996                                 if (kctl->info(kctl, uinfo)) {
 997                                         up_read(&mixer->card->controls_rwsem);
 998                                         return 0;
 999                                 }
1000                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1001                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1002                                         break;
1003                                 }
1004                         }
1005                 }
1006                 kfree(uinfo);
1007         }
1008         up_read(&mixer->card->controls_rwsem);
1009         if (slot.present != 0) {
1010                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1011                 snd_runtime_check(pslot != NULL, return -ENOMEM);
1012                 *pslot = slot;
1013                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1014                 pslot->assigned = ptr;
1015                 pslot->allocated = ptr_allocated;
1016                 rslot = &mixer->slots[ptr->oss_id];
1017                 mixer_slot_clear(rslot);
1018                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1019                 rslot->get_volume = snd_mixer_oss_get_volume1;
1020                 rslot->put_volume = snd_mixer_oss_put_volume1;
1021                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1022                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1023                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1024                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1025                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1026                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1027                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1028                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1029                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1030                 }
1031                 rslot->private_data = pslot;
1032                 rslot->private_free = snd_mixer_oss_slot_free;
1033                 return 1;
1034         }
1035         return 0;
1036 }
1037
1038 /*
1039  */
1040 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1041 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1042         MIXER_VOL(VOLUME),
1043         MIXER_VOL(BASS),
1044         MIXER_VOL(TREBLE),
1045         MIXER_VOL(SYNTH),
1046         MIXER_VOL(PCM),
1047         MIXER_VOL(SPEAKER),
1048         MIXER_VOL(LINE),
1049         MIXER_VOL(MIC),
1050         MIXER_VOL(CD),
1051         MIXER_VOL(IMIX),
1052         MIXER_VOL(ALTPCM),
1053         MIXER_VOL(RECLEV),
1054         MIXER_VOL(IGAIN),
1055         MIXER_VOL(OGAIN),
1056         MIXER_VOL(LINE1),
1057         MIXER_VOL(LINE2),
1058         MIXER_VOL(LINE3),
1059         MIXER_VOL(DIGITAL1),
1060         MIXER_VOL(DIGITAL2),
1061         MIXER_VOL(DIGITAL3),
1062         MIXER_VOL(PHONEIN),
1063         MIXER_VOL(PHONEOUT),
1064         MIXER_VOL(VIDEO),
1065         MIXER_VOL(RADIO),
1066         MIXER_VOL(MONITOR),
1067 };
1068
1069 /*
1070  *  /proc interface
1071  */
1072
1073 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1074                                     snd_info_buffer_t * buffer)
1075 {
1076         snd_mixer_oss_t *mixer = entry->private_data;
1077         int i;
1078
1079         down(&mixer->reg_mutex);
1080         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1081                 struct slot *p;
1082
1083                 if (! oss_mixer_names[i])
1084                         continue;
1085                 p = (struct slot *)mixer->slots[i].private_data;
1086                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1087                 if (p && p->assigned)
1088                         snd_iprintf(buffer, "\"%s\" %d\n",
1089                                     p->assigned->name,
1090                                     p->assigned->index);
1091                 else
1092                         snd_iprintf(buffer, "\"\" 0\n");
1093         }
1094         up(&mixer->reg_mutex);
1095 }
1096
1097 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1098                                      snd_info_buffer_t * buffer)
1099 {
1100         snd_mixer_oss_t *mixer = entry->private_data;
1101         char line[128], str[32], idxstr[16], *cptr;
1102         int ch, idx;
1103         struct snd_mixer_oss_assign_table *tbl;
1104         struct slot *slot;
1105
1106         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1107                 cptr = snd_info_get_str(str, line, sizeof(str));
1108                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1109                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1110                                 break;
1111                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1112                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1113                         continue;
1114                 }
1115                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1116                 if (! *str) {
1117                         /* remove the entry */
1118                         down(&mixer->reg_mutex);
1119                         mixer_slot_clear(&mixer->slots[ch]);
1120                         up(&mixer->reg_mutex);
1121                         continue;
1122                 }
1123                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1124                 idx = simple_strtoul(idxstr, NULL, 10);
1125                 if (idx >= 0x4000) { /* too big */
1126                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1127                         continue;
1128                 }
1129                 down(&mixer->reg_mutex);
1130                 slot = (struct slot *)mixer->slots[ch].private_data;
1131                 if (slot && slot->assigned &&
1132                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1133                         /* not changed */
1134                         goto __unlock;
1135                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1136                 if (! tbl) {
1137                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1138                         goto __unlock;
1139                 }
1140                 tbl->oss_id = ch;
1141                 tbl->name = kstrdup(str, GFP_KERNEL);
1142                 if (! tbl->name) {
1143                         kfree(tbl);
1144                         goto __unlock;
1145                 }
1146                 tbl->index = idx;
1147                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1148                         kfree(tbl->name);
1149                         kfree(tbl);
1150                 }
1151         __unlock:
1152                 up(&mixer->reg_mutex);
1153         }
1154 }
1155
1156 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1157 {
1158         snd_info_entry_t *entry;
1159
1160         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1161                                            mixer->card->proc_root);
1162         if (! entry)
1163                 return;
1164         entry->content = SNDRV_INFO_CONTENT_TEXT;
1165         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1166         entry->c.text.read_size = 8192;
1167         entry->c.text.read = snd_mixer_oss_proc_read;
1168         entry->c.text.write_size = 8192;
1169         entry->c.text.write = snd_mixer_oss_proc_write;
1170         entry->private_data = mixer;
1171         if (snd_info_register(entry) < 0) {
1172                 snd_info_free_entry(entry);
1173                 entry = NULL;
1174         }
1175         mixer->proc_entry = entry;
1176 }
1177
1178 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1179 {
1180         if (mixer->proc_entry) {
1181                 snd_info_unregister(mixer->proc_entry);
1182                 mixer->proc_entry = NULL;
1183         }
1184 }
1185
1186 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1187 {
1188         static struct snd_mixer_oss_assign_table table[] = {
1189                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1190                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1191                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1192                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1193                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1194                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1195                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1196                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1197                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1198                 { SOUND_MIXER_LINE,     "Line",                 0 },
1199                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1200                 { SOUND_MIXER_CD,       "CD",                   0 },
1201                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1202                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1203                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1204                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1205                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1206                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1207                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1208                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1209                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1210                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1211                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1212                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1213                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1214                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1215                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1216                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1217                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1218                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1219                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1220                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1221                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1222                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1223         };
1224         unsigned int idx;
1225
1226         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1227                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1228         if (mixer->mask_recsrc) {
1229                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1230                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1231         }
1232 }
1233
1234 /*
1235  *
1236  */
1237
1238 static int snd_mixer_oss_free1(void *private)
1239 {
1240         snd_mixer_oss_t *mixer = private;
1241         snd_card_t * card;
1242         int idx;
1243
1244         snd_assert(mixer != NULL, return -ENXIO);
1245         card = mixer->card;
1246         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1247         card->mixer_oss = NULL;
1248         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1249                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1250                 if (chn->private_free)
1251                         chn->private_free(chn);
1252         }
1253         kfree(mixer);
1254         return 0;
1255 }
1256
1257 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1258 {
1259         snd_mixer_oss_t *mixer;
1260
1261         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1262                 char name[128];
1263                 int idx, err;
1264
1265                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1266                 if (mixer == NULL)
1267                         return -ENOMEM;
1268                 init_MUTEX(&mixer->reg_mutex);
1269                 sprintf(name, "mixer%i%i", card->number, 0);
1270                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1271                                                    card, 0,
1272                                                    &snd_mixer_oss_reg,
1273                                                    name)) < 0) {
1274                         snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0);
1275                         kfree(mixer);
1276                         return err;
1277                 }
1278                 mixer->oss_dev_alloc = 1;
1279                 mixer->card = card;
1280                 if (*card->mixername)
1281                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1282                 else
1283                         strlcpy(mixer->name, name, sizeof(mixer->name));
1284 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1285                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1286                                       card->number,
1287                                       mixer->name);
1288 #endif
1289                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1290                         mixer->slots[idx].number = idx;
1291                 card->mixer_oss = mixer;
1292                 snd_mixer_oss_build(mixer);
1293                 snd_mixer_oss_proc_init(mixer);
1294         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1295                 mixer = card->mixer_oss;
1296                 if (mixer == NULL || !mixer->oss_dev_alloc)
1297                         return 0;
1298                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1299                 mixer->oss_dev_alloc = 0;
1300         } else {                /* free */
1301                 mixer = card->mixer_oss;
1302                 if (mixer == NULL)
1303                         return 0;
1304 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1305                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1306 #endif
1307                 if (mixer->oss_dev_alloc)
1308                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1309                 snd_mixer_oss_proc_done(mixer);
1310                 return snd_mixer_oss_free1(mixer);
1311         }
1312         return 0;
1313 }
1314
1315 static int __init alsa_mixer_oss_init(void)
1316 {
1317         int idx;
1318
1319         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1320         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1321                 if (snd_cards[idx])
1322                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1323         }
1324         return 0;
1325 }
1326
1327 static void __exit alsa_mixer_oss_exit(void)
1328 {
1329         int idx;
1330
1331         snd_mixer_oss_notify_callback = NULL;
1332         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1333                 if (snd_cards[idx])
1334                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1335         }
1336 }
1337
1338 module_init(alsa_mixer_oss_init)
1339 module_exit(alsa_mixer_oss_exit)
1340
1341 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);