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@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         if (kctl->info(kctl, uinfo))
 525                 goto __unalloc;
 526         if (kctl->get(kctl, uctl))
 527                 goto __unalloc;
 528         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 529             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 530                 goto __unalloc;
 531         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 532         if (uinfo->count > 1)
 533                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 534       __unalloc:
 535         up_read(&card->controls_rwsem);
 536         kfree(uctl);
 537         kfree(uinfo);
 538 }
 539
 540 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
 541                                          snd_mixer_oss_slot_t *pslot,
 542                                          unsigned int numid,
 543                                          int *left, int *right,
 544                                          int route)
 545 {
 546         snd_ctl_elem_info_t *uinfo;
 547         snd_ctl_elem_value_t *uctl;
 548         snd_kcontrol_t *kctl;
 549         snd_card_t *card = fmixer->card;
 550
 551         if (numid == ID_UNKNOWN)
 552                 return;
 553         down_read(&card->controls_rwsem);
 554         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 555                 up_read(&card->controls_rwsem);
 556                 return;
 557         }
 558         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 559         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 560         if (uinfo == NULL || uctl == NULL)
 561                 goto __unalloc;
 562         if (kctl->info(kctl, uinfo))
 563                 goto __unalloc;
 564         if (kctl->get(kctl, uctl))
 565                 goto __unalloc;
 566         if (!uctl->value.integer.value[0]) {
 567                 *left = 0;
 568                 if (uinfo->count == 1)
 569                         *right = 0;
 570         }
 571         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 572                 *right = 0;
 573       __unalloc:
 574         up_read(&card->controls_rwsem);
 575         kfree(uctl);
 576         kfree(uinfo);
 577 }
 578
 579 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
 580                                      snd_mixer_oss_slot_t *pslot,
 581                                      int *left, int *right)
 582 {
 583         struct slot *slot = (struct slot *)pslot->private_data;
 584
 585         *left = *right = 100;
 586         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 587                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 588         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 589                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 590         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 591                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 592         }
 593         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 594                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 595         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 596                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 597         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 598                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 599         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 600                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 601         }
 602         return 0;
 603 }
 604
 605 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
 606                                           snd_mixer_oss_slot_t *pslot,
 607                                           unsigned int numid,
 608                                           int left, int right)
 609 {
 610         snd_ctl_elem_info_t *uinfo;
 611         snd_ctl_elem_value_t *uctl;
 612         snd_kcontrol_t *kctl;
 613         snd_card_t *card = fmixer->card;
 614         int res;
 615
 616         if (numid == ID_UNKNOWN)
 617                 return;
 618         down_read(&card->controls_rwsem);
 619         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 620                 return;
 621         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 622         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 623         if (uinfo == NULL || uctl == NULL)
 624                 goto __unalloc;
 625         if (kctl->info(kctl, uinfo))
 626                 goto __unalloc;
 627         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 628             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 629                 goto __unalloc;
 630         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 631         if (uinfo->count > 1)
 632                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 633         if ((res = kctl->put(kctl, uctl)) < 0)
 634                 goto __unalloc;
 635         if (res > 0)
 636                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 637       __unalloc:
 638         up_read(&card->controls_rwsem);
 639         kfree(uctl);
 640         kfree(uinfo);
 641 }
 642
 643 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
 644                                          snd_mixer_oss_slot_t *pslot,
 645                                          unsigned int numid,
 646                                          int left, int right,
 647                                          int route)
 648 {
 649         snd_ctl_elem_info_t *uinfo;
 650         snd_ctl_elem_value_t *uctl;
 651         snd_kcontrol_t *kctl;
 652         snd_card_t *card = fmixer->card;
 653         int res;
 654
 655         if (numid == ID_UNKNOWN)
 656                 return;
 657         down_read(&card->controls_rwsem);
 658         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 659                 up_read(&fmixer->card->controls_rwsem);
 660                 return;
 661         }
 662         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 663         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 664         if (uinfo == NULL || uctl == NULL)
 665                 goto __unalloc;
 666         if (kctl->info(kctl, uinfo))
 667                 goto __unalloc;
 668         if (uinfo->count > 1) {
 669                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 670                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 671                 if (route) {
 672                         uctl->value.integer.value[1] =
 673                         uctl->value.integer.value[2] = 0;
 674                 }
 675         } else {
 676                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 677         }
 678         if ((res = kctl->put(kctl, uctl)) < 0)
 679                 goto __unalloc;
 680         if (res > 0)
 681                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 682       __unalloc:
 683         up_read(&card->controls_rwsem);
 684         kfree(uctl);
 685         kfree(uinfo);
 686 }
 687
 688 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
 689                                      snd_mixer_oss_slot_t *pslot,
 690                                      int left, int right)
 691 {
 692         struct slot *slot = (struct slot *)pslot->private_data;
 693
 694         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 695                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 696                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 697                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 698         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 699                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 700         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 701                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 702         }
 703         if (left || right) {
 704                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 705                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 706                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 707                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 708                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 709                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 710                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 711                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 712         } else {
 713                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 715                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 716                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 717                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 718                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 719                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 720                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 721                 }
 722         }
 723         return 0;
 724 }
 725
 726 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 727                                         snd_mixer_oss_slot_t *pslot,
 728                                         int *active)
 729 {
 730         struct slot *slot = (struct slot *)pslot->private_data;
 731         int left, right;
 732
 733         left = right = 1;
 734         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 735         *active = (left || right) ? 1 : 0;
 736         return 0;
 737 }
 738
 739 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 740                                            snd_mixer_oss_slot_t *pslot,
 741                                            int *active)
 742 {
 743         struct slot *slot = (struct slot *)pslot->private_data;
 744         int left, right;
 745
 746         left = right = 1;
 747         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 748         *active = (left || right) ? 1 : 0;
 749         return 0;
 750 }
 751
 752 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 753                                         snd_mixer_oss_slot_t *pslot,
 754                                         int active)
 755 {
 756         struct slot *slot = (struct slot *)pslot->private_data;
 757
 758         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 759         return 0;
 760 }
 761
 762 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 763                                            snd_mixer_oss_slot_t *pslot,
 764                                            int active)
 765 {
 766         struct slot *slot = (struct slot *)pslot->private_data;
 767
 768         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 769         return 0;
 770 }
 771
 772 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
 773 {
 774         snd_card_t *card = fmixer->card;
 775         snd_mixer_oss_t *mixer = fmixer->mixer;
 776         snd_kcontrol_t *kctl;
 777         snd_mixer_oss_slot_t *pslot;
 778         struct slot *slot;
 779         snd_ctl_elem_info_t *uinfo;
 780         snd_ctl_elem_value_t *uctl;
 781         int err, idx;
 782
 783         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 784         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 785         if (uinfo == NULL || uctl == NULL) {
 786                 err = -ENOMEM;
 787                 goto __unlock;
 788         }
 789         down_read(&card->controls_rwsem);
 790         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 791         if (! kctl) {
 792                 err = -ENOENT;
 793                 goto __unlock;
 794         }
 795         if ((err = kctl->info(kctl, uinfo)) < 0)
 796                 goto __unlock;
 797         if ((err = kctl->get(kctl, uctl)) < 0)
 798                 goto __unlock;
 799         for (idx = 0; idx < 32; idx++) {
 800                 if (!(mixer->mask_recsrc & (1 << idx)))
 801                         continue;
 802                 pslot = &mixer->slots[idx];
 803                 slot = (struct slot *)pslot->private_data;
 804                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 805                         continue;
 806                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 807                         continue;
 808                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 809                         *active_index = idx;
 810                         break;
 811                 }
 812         }
 813         err = 0;
 814       __unlock:
 815         up_read(&card->controls_rwsem);
 816         kfree(uctl);
 817         kfree(uinfo);
 818         return err;
 819 }
 820
 821 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
 822 {
 823         snd_card_t *card = fmixer->card;
 824         snd_mixer_oss_t *mixer = fmixer->mixer;
 825         snd_kcontrol_t *kctl;
 826         snd_mixer_oss_slot_t *pslot;
 827         struct slot *slot = NULL;
 828         snd_ctl_elem_info_t *uinfo;
 829         snd_ctl_elem_value_t *uctl;
 830         int err;
 831         unsigned int idx;
 832
 833         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 834         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 835         if (uinfo == NULL || uctl == NULL) {
 836                 err = -ENOMEM;
 837                 goto __unlock;
 838         }
 839         down_read(&card->controls_rwsem);
 840         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 841         if (! kctl) {
 842                 err = -ENOENT;
 843                 goto __unlock;
 844         }
 845         if ((err = kctl->info(kctl, uinfo)) < 0)
 846                 goto __unlock;
 847         for (idx = 0; idx < 32; idx++) {
 848                 if (!(mixer->mask_recsrc & (1 << idx)))
 849                         continue;
 850                 pslot = &mixer->slots[idx];
 851                 slot = (struct slot *)pslot->private_data;
 852                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 853                         continue;
 854                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 855                         continue;
 856                 if (idx == active_index)
 857                         break;
 858                 slot = NULL;
 859         }
 860         if (! slot)
 861                 goto __unlock;
 862         for (idx = 0; idx < uinfo->count; idx++)
 863                 uctl->value.enumerated.item[idx] = slot->capture_item;
 864         err = kctl->put(kctl, uctl);
 865         if (err > 0)
 866                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 867         err = 0;
 868       __unlock:
 869         up_read(&card->controls_rwsem);
 870         kfree(uctl);
 871         kfree(uinfo);
 872         return err;
 873 }
 874
 875 struct snd_mixer_oss_assign_table {
 876         int oss_id;
 877         const char *name;
 878         int index;
 879 };
 880
 881 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
 882 {
 883         snd_ctl_elem_info_t *info;
 884         snd_kcontrol_t *kcontrol;
 885         snd_card_t *card = mixer->card;
 886         int err;
 887
 888         down_read(&card->controls_rwsem);
 889         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 890         if (kcontrol == NULL) {
 891                 up_read(&card->controls_rwsem);
 892                 return 0;
 893         }
 894         info = kmalloc(sizeof(*info), GFP_KERNEL);
 895         if (! info) {
 896                 up_read(&card->controls_rwsem);
 897                 return -ENOMEM;
 898         }
 899         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 900                 up_read(&card->controls_rwsem);
 901                 kfree(info);
 902                 return err;
 903         }
 904         slot->numid[item] = kcontrol->id.numid;
 905         up_read(&card->controls_rwsem);
 906         if (info->count > slot->channels)
 907                 slot->channels = info->count;
 908         slot->present |= 1 << item;
 909         kfree(info);
 910         return 0;
 911 }
 912
 913 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
 914 {
 915         struct slot *p = (struct slot *)chn->private_data;
 916         if (p) {
 917                 if (p->allocated && p->assigned) {
 918                         kfree(p->assigned->name);
 919                         kfree(p->assigned);
 920                 }
 921                 kfree(p);
 922         }
 923 }
 924
 925 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
 926 {
 927         int idx = rslot->number; /* remember this */
 928         if (rslot->private_free)
 929                 rslot->private_free(rslot);
 930         memset(rslot, 0, sizeof(*rslot));
 931         rslot->number = idx;
 932 }
 933
 934 /*
 935  * build an OSS mixer element.
 936  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 937  * when replace_old = 1, the old entry is replaced with the new one.
 938  */
 939 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)
 940 {
 941         struct slot slot;
 942         struct slot *pslot;
 943         snd_kcontrol_t *kctl;
 944         snd_mixer_oss_slot_t *rslot;
 945         char str[64];
 946
 947         /* check if already assigned */
 948         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
 949                 return 0;
 950
 951         memset(&slot, 0, sizeof(slot));
 952         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
 953         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
 954                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
 955                 return 0;
 956         sprintf(str, "%s Switch", ptr->name);
 957         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 958                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
 959                 return 0;
 960         sprintf(str, "%s Route", ptr->name);
 961         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 962                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
 963                 return 0;
 964         sprintf(str, "%s Volume", ptr->name);
 965         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 966                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
 967                 return 0;
 968         sprintf(str, "%s Playback Switch", ptr->name);
 969         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 970                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
 971                 return 0;
 972         sprintf(str, "%s Playback Route", ptr->name);
 973         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 974                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
 975                 return 0;
 976         sprintf(str, "%s Playback Volume", ptr->name);
 977         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 978                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
 979                 return 0;
 980         sprintf(str, "%s Capture Switch", ptr->name);
 981         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 982                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
 983                 return 0;
 984         sprintf(str, "%s Capture Route", ptr->name);
 985         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 986                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
 987                 return 0;
 988         sprintf(str, "%s Capture Volume", ptr->name);
 989         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 990                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
 991                 return 0;
 992         down_read(&mixer->card->controls_rwsem);
 993         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
 994                 snd_ctl_elem_info_t *uinfo;
 995
 996                 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
 997                 if (! uinfo) {
 998                         up_read(&mixer->card->controls_rwsem);
 999                         return -ENOMEM;
1000                 }
1001
1002                 memset(uinfo, 0, sizeof(*uinfo));
1003                 if (kctl->info(kctl, uinfo)) {
1004                         up_read(&mixer->card->controls_rwsem);
1005                         return 0;
1006                 }
1007                 strcpy(str, ptr->name);
1008                 if (!strcmp(str, "Master"))
1009                         strcpy(str, "Mix");
1010                 if (!strcmp(str, "Master Mono"))
1011                         strcpy(str, "Mix Mono");
1012                 slot.capture_item = 0;
1013                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1014                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1015                 } else {
1016                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1017                                 uinfo->value.enumerated.item = slot.capture_item;
1018                                 if (kctl->info(kctl, uinfo)) {
1019                                         up_read(&mixer->card->controls_rwsem);
1020                                         return 0;
1021                                 }
1022                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1023                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1024                                         break;
1025                                 }
1026                         }
1027                 }
1028                 kfree(uinfo);
1029         }
1030         up_read(&mixer->card->controls_rwsem);
1031         if (slot.present != 0) {
1032                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1033                 if (! pslot)
1034                         return -ENOMEM;
1035                 *pslot = slot;
1036                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1037                 pslot->assigned = ptr;
1038                 pslot->allocated = ptr_allocated;
1039                 rslot = &mixer->slots[ptr->oss_id];
1040                 mixer_slot_clear(rslot);
1041                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1042                 rslot->get_volume = snd_mixer_oss_get_volume1;
1043                 rslot->put_volume = snd_mixer_oss_put_volume1;
1044                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1045                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1046                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1047                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1048                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1049                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1050                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1051                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1052                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1053                 }
1054                 rslot->private_data = pslot;
1055                 rslot->private_free = snd_mixer_oss_slot_free;
1056                 return 1;
1057         }
1058         return 0;
1059 }
1060
1061 /*
1062  */
1063 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1064 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1065         MIXER_VOL(VOLUME),
1066         MIXER_VOL(BASS),
1067         MIXER_VOL(TREBLE),
1068         MIXER_VOL(SYNTH),
1069         MIXER_VOL(PCM),
1070         MIXER_VOL(SPEAKER),
1071         MIXER_VOL(LINE),
1072         MIXER_VOL(MIC),
1073         MIXER_VOL(CD),
1074         MIXER_VOL(IMIX),
1075         MIXER_VOL(ALTPCM),
1076         MIXER_VOL(RECLEV),
1077         MIXER_VOL(IGAIN),
1078         MIXER_VOL(OGAIN),
1079         MIXER_VOL(LINE1),
1080         MIXER_VOL(LINE2),
1081         MIXER_VOL(LINE3),
1082         MIXER_VOL(DIGITAL1),
1083         MIXER_VOL(DIGITAL2),
1084         MIXER_VOL(DIGITAL3),
1085         MIXER_VOL(PHONEIN),
1086         MIXER_VOL(PHONEOUT),
1087         MIXER_VOL(VIDEO),
1088         MIXER_VOL(RADIO),
1089         MIXER_VOL(MONITOR),
1090 };
1091
1092 /*
1093  *  /proc interface
1094  */
1095
1096 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1097                                     snd_info_buffer_t * buffer)
1098 {
1099         snd_mixer_oss_t *mixer = entry->private_data;
1100         int i;
1101
1102         down(&mixer->reg_mutex);
1103         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1104                 struct slot *p;
1105
1106                 if (! oss_mixer_names[i])
1107                         continue;
1108                 p = (struct slot *)mixer->slots[i].private_data;
1109                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1110                 if (p && p->assigned)
1111                         snd_iprintf(buffer, "\"%s\" %d\n",
1112                                     p->assigned->name,
1113                                     p->assigned->index);
1114                 else
1115                         snd_iprintf(buffer, "\"\" 0\n");
1116         }
1117         up(&mixer->reg_mutex);
1118 }
1119
1120 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1121                                      snd_info_buffer_t * buffer)
1122 {
1123         snd_mixer_oss_t *mixer = entry->private_data;
1124         char line[128], str[32], idxstr[16], *cptr;
1125         int ch, idx;
1126         struct snd_mixer_oss_assign_table *tbl;
1127         struct slot *slot;
1128
1129         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1130                 cptr = snd_info_get_str(str, line, sizeof(str));
1131                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1132                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1133                                 break;
1134                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1135                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1136                         continue;
1137                 }
1138                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1139                 if (! *str) {
1140                         /* remove the entry */
1141                         down(&mixer->reg_mutex);
1142                         mixer_slot_clear(&mixer->slots[ch]);
1143                         up(&mixer->reg_mutex);
1144                         continue;
1145                 }
1146                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1147                 idx = simple_strtoul(idxstr, NULL, 10);
1148                 if (idx >= 0x4000) { /* too big */
1149                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1150                         continue;
1151                 }
1152                 down(&mixer->reg_mutex);
1153                 slot = (struct slot *)mixer->slots[ch].private_data;
1154                 if (slot && slot->assigned &&
1155                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1156                         /* not changed */
1157                         goto __unlock;
1158                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1159                 if (! tbl) {
1160                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1161                         goto __unlock;
1162                 }
1163                 tbl->oss_id = ch;
1164                 tbl->name = kstrdup(str, GFP_KERNEL);
1165                 if (! tbl->name) {
1166                         kfree(tbl);
1167                         goto __unlock;
1168                 }
1169                 tbl->index = idx;
1170                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1171                         kfree(tbl->name);
1172                         kfree(tbl);
1173                 }
1174         __unlock:
1175                 up(&mixer->reg_mutex);
1176         }
1177 }
1178
1179 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1180 {
1181         snd_info_entry_t *entry;
1182
1183         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1184                                            mixer->card->proc_root);
1185         if (! entry)
1186                 return;
1187         entry->content = SNDRV_INFO_CONTENT_TEXT;
1188         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1189         entry->c.text.read_size = 8192;
1190         entry->c.text.read = snd_mixer_oss_proc_read;
1191         entry->c.text.write_size = 8192;
1192         entry->c.text.write = snd_mixer_oss_proc_write;
1193         entry->private_data = mixer;
1194         if (snd_info_register(entry) < 0) {
1195                 snd_info_free_entry(entry);
1196                 entry = NULL;
1197         }
1198         mixer->proc_entry = entry;
1199 }
1200
1201 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1202 {
1203         if (mixer->proc_entry) {
1204                 snd_info_unregister(mixer->proc_entry);
1205                 mixer->proc_entry = NULL;
1206         }
1207 }
1208
1209 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1210 {
1211         static struct snd_mixer_oss_assign_table table[] = {
1212                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1213                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1214                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1215                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1216                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1217                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1218                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1219                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1220                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1221                 { SOUND_MIXER_LINE,     "Line",                 0 },
1222                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1223                 { SOUND_MIXER_CD,       "CD",                   0 },
1224                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1225                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1226                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1227                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1228                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1229                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1230                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1231                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1232                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1233                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1234                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1235                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1236                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1237                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1238                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1239                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1240                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1241                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1242                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1243                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1244                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1245                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1246         };
1247         unsigned int idx;
1248
1249         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1250                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1251         if (mixer->mask_recsrc) {
1252                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1253                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1254         }
1255 }
1256
1257 /*
1258  *
1259  */
1260
1261 static int snd_mixer_oss_free1(void *private)
1262 {
1263         snd_mixer_oss_t *mixer = private;
1264         snd_card_t * card;
1265         int idx;
1266
1267         snd_assert(mixer != NULL, return -ENXIO);
1268         card = mixer->card;
1269         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1270         card->mixer_oss = NULL;
1271         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1272                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1273                 if (chn->private_free)
1274                         chn->private_free(chn);
1275         }
1276         kfree(mixer);
1277         return 0;
1278 }
1279
1280 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1281 {
1282         snd_mixer_oss_t *mixer;
1283
1284         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1285                 char name[128];
1286                 int idx, err;
1287
1288                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1289                 if (mixer == NULL)
1290                         return -ENOMEM;
1291                 init_MUTEX(&mixer->reg_mutex);
1292                 sprintf(name, "mixer%i%i", card->number, 0);
1293                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1294                                                    card, 0,
1295                                                    &snd_mixer_oss_reg,
1296                                                    name)) < 0) {
1297                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1298                                    card->number, 0);
1299                         kfree(mixer);
1300                         return err;
1301                 }
1302                 mixer->oss_dev_alloc = 1;
1303                 mixer->card = card;
1304                 if (*card->mixername)
1305                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1306                 else
1307                         strlcpy(mixer->name, name, sizeof(mixer->name));
1308 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1309                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1310                                       card->number,
1311                                       mixer->name);
1312 #endif
1313                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1314                         mixer->slots[idx].number = idx;
1315                 card->mixer_oss = mixer;
1316                 snd_mixer_oss_build(mixer);
1317                 snd_mixer_oss_proc_init(mixer);
1318         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1319                 mixer = card->mixer_oss;
1320                 if (mixer == NULL || !mixer->oss_dev_alloc)
1321                         return 0;
1322                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1323                 mixer->oss_dev_alloc = 0;
1324         } else {                /* free */
1325                 mixer = card->mixer_oss;
1326                 if (mixer == NULL)
1327                         return 0;
1328 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1329                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1330 #endif
1331                 if (mixer->oss_dev_alloc)
1332                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1333                 snd_mixer_oss_proc_done(mixer);
1334                 return snd_mixer_oss_free1(mixer);
1335         }
1336         return 0;
1337 }
1338
1339 static int __init alsa_mixer_oss_init(void)
1340 {
1341         int idx;
1342
1343         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1344         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1345                 if (snd_cards[idx])
1346                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1347         }
1348         return 0;
1349 }
1350
1351 static void __exit alsa_mixer_oss_exit(void)
1352 {
1353         int idx;
1354
1355         snd_mixer_oss_notify_callback = NULL;
1356         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1357                 if (snd_cards[idx])
1358                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1359         }
1360 }
1361
1362 module_init(alsa_mixer_oss_init)
1363 module_exit(alsa_mixer_oss_exit)
1364
1365 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);