sound/core/oss/mixer_oss.c

   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/time.h>
  26 #include <linux/string.h>
  27 #include <sound/core.h>
  28 #include <sound/minors.h>
  29 #include <sound/control.h>
  30 #include <sound/info.h>
  31 #include <sound/mixer_oss.h>
  32 #include <linux/soundcard.h>
  33
  34 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  35
  36 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  38 MODULE_LICENSE("GPL");
  39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  40
  41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  42 {
  43         struct snd_card *card;
  44         struct snd_mixer_oss_file *fmixer;
  45         int err;
  46
  47         card = snd_lookup_oss_minor_data(iminor(inode),
  48                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  49         if (card == 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         struct snd_mixer_oss_file *fmixer;
  75
  76         if (file->private_data) {
  77                 fmixer = (struct snd_mixer_oss_file *) 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(struct snd_mixer_oss_file *fmixer,
  86                               mixer_info __user *_info)
  87 {
  88         struct snd_card *card = fmixer->card;
  89         struct snd_mixer_oss *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(struct snd_mixer_oss_file *fmixer,
 102                                        _old_mixer_info __user *_info)
 103 {
 104         struct snd_card *card = fmixer->card;
 105         struct snd_mixer_oss *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(struct snd_mixer_oss_file *fmixer)
 117 {
 118         struct snd_mixer_oss *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(struct snd_mixer_oss_file *fmixer)
 129 {
 130         struct snd_mixer_oss *mixer = fmixer->mixer;
 131         struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer)
 145 {
 146         struct snd_mixer_oss *mixer = fmixer->mixer;
 147         struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer)
 161 {
 162         struct snd_mixer_oss *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                 struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer)
 182 {
 183         struct snd_mixer_oss *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                 struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer, int recsrc)
 210 {
 211         struct snd_mixer_oss *mixer = fmixer->mixer;
 212         struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer, int slot)
 247 {
 248         struct snd_mixer_oss *mixer = fmixer->mixer;
 249         struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer,
 272                                     int slot, int volume)
 273 {
 274         struct snd_mixer_oss *mixer = fmixer->mixer;
 275         struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *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((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
 366 }
 367
 368 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 369 {
 370         struct snd_mixer_oss_file 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 const 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 /*
 402  *  utilities
 403  */
 404
 405 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 406 {
 407         long orange = omax - omin, nrange = nmax - nmin;
 408
 409         if (orange == 0)
 410                 return 0;
 411         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 412 }
 413
 414 /* convert from alsa native to oss values (0-100) */
 415 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 416 {
 417         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 418                 return *old;
 419         return snd_mixer_oss_conv(val, min, max, 0, 100);
 420 }
 421
 422 /* convert from oss to alsa native values */
 423 static long snd_mixer_oss_conv2(long val, long min, long max)
 424 {
 425         return snd_mixer_oss_conv(val, 0, 100, min, max);
 426 }
 427
 428 #if 0
 429 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 430 {
 431         struct snd_mixer_oss *mixer = card->mixer_oss;
 432         if (mixer)
 433                 mixer->mask_recsrc |= 1 << slot;
 434 }
 435
 436 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 437 {
 438         struct snd_mixer_oss *mixer = card->mixer_oss;
 439         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 440                 return 1;
 441         return 0;
 442 }
 443 #endif
 444
 445 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 446
 447 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 448 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 449 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 450 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 451 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 452 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 453 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 454 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 455 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 456 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 457 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 458
 459 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 460
 461 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 462 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 463 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 464 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 465 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 466 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 467 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 468 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 469 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 470 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 471 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 472
 473 struct slot {
 474         unsigned int signature;
 475         unsigned int present;
 476         unsigned int channels;
 477         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 478         unsigned int capture_item;
 479         struct snd_mixer_oss_assign_table *assigned;
 480         unsigned int allocated: 1;
 481 };
 482
 483 #define ID_UNKNOWN      ((unsigned int)-1)
 484
 485 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 486 {
 487         struct snd_card *card = mixer->card;
 488         struct snd_ctl_elem_id id;
 489
 490         memset(&id, 0, sizeof(id));
 491         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 492         strcpy(id.name, name);
 493         id.index = index;
 494         return snd_ctl_find_id(card, &id);
 495 }
 496
 497 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 498                                           struct snd_mixer_oss_slot *pslot,
 499                                           unsigned int numid,
 500                                           int *left, int *right)
 501 {
 502         struct snd_ctl_elem_info *uinfo;
 503         struct snd_ctl_elem_value *uctl;
 504         struct snd_kcontrol *kctl;
 505         struct snd_card *card = fmixer->card;
 506
 507         if (numid == ID_UNKNOWN)
 508                 return;
 509         down_read(&card->controls_rwsem);
 510         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 511                 up_read(&card->controls_rwsem);
 512                 return;
 513         }
 514         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 515         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 516         if (uinfo == NULL || uctl == NULL)
 517                 goto __unalloc;
 518         if (kctl->info(kctl, uinfo))
 519                 goto __unalloc;
 520         if (kctl->get(kctl, uctl))
 521                 goto __unalloc;
 522         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 523             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 524                 goto __unalloc;
 525         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 526         if (uinfo->count > 1)
 527                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 528       __unalloc:
 529         up_read(&card->controls_rwsem);
 530         kfree(uctl);
 531         kfree(uinfo);
 532 }
 533
 534 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 535                                          struct snd_mixer_oss_slot *pslot,
 536                                          unsigned int numid,
 537                                          int *left, int *right,
 538                                          int route)
 539 {
 540         struct snd_ctl_elem_info *uinfo;
 541         struct snd_ctl_elem_value *uctl;
 542         struct snd_kcontrol *kctl;
 543         struct snd_card *card = fmixer->card;
 544
 545         if (numid == ID_UNKNOWN)
 546                 return;
 547         down_read(&card->controls_rwsem);
 548         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 549                 up_read(&card->controls_rwsem);
 550                 return;
 551         }
 552         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 553         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 554         if (uinfo == NULL || uctl == NULL)
 555                 goto __unalloc;
 556         if (kctl->info(kctl, uinfo))
 557                 goto __unalloc;
 558         if (kctl->get(kctl, uctl))
 559                 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(struct snd_mixer_oss_file *fmixer,
 574                                      struct snd_mixer_oss_slot *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(struct snd_mixer_oss_file *fmixer,
 600                                           struct snd_mixer_oss_slot *pslot,
 601                                           unsigned int numid,
 602                                           int left, int right)
 603 {
 604         struct snd_ctl_elem_info *uinfo;
 605         struct snd_ctl_elem_value *uctl;
 606         struct snd_kcontrol *kctl;
 607         struct snd_card *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         if (kctl->info(kctl, uinfo))
 620                 goto __unalloc;
 621         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 622             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 623                 goto __unalloc;
 624         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 625         if (uinfo->count > 1)
 626                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 627         if ((res = kctl->put(kctl, uctl)) < 0)
 628                 goto __unalloc;
 629         if (res > 0)
 630                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 631       __unalloc:
 632         up_read(&card->controls_rwsem);
 633         kfree(uctl);
 634         kfree(uinfo);
 635 }
 636
 637 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 638                                          struct snd_mixer_oss_slot *pslot,
 639                                          unsigned int numid,
 640                                          int left, int right,
 641                                          int route)
 642 {
 643         struct snd_ctl_elem_info *uinfo;
 644         struct snd_ctl_elem_value *uctl;
 645         struct snd_kcontrol *kctl;
 646         struct snd_card *card = fmixer->card;
 647         int res;
 648
 649         if (numid == ID_UNKNOWN)
 650                 return;
 651         down_read(&card->controls_rwsem);
 652         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 653                 up_read(&fmixer->card->controls_rwsem);
 654                 return;
 655         }
 656         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 657         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 658         if (uinfo == NULL || uctl == NULL)
 659                 goto __unalloc;
 660         if (kctl->info(kctl, uinfo))
 661                 goto __unalloc;
 662         if (uinfo->count > 1) {
 663                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 664                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 665                 if (route) {
 666                         uctl->value.integer.value[1] =
 667                         uctl->value.integer.value[2] = 0;
 668                 }
 669         } else {
 670                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 671         }
 672         if ((res = kctl->put(kctl, uctl)) < 0)
 673                 goto __unalloc;
 674         if (res > 0)
 675                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 676       __unalloc:
 677         up_read(&card->controls_rwsem);
 678         kfree(uctl);
 679         kfree(uinfo);
 680 }
 681
 682 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 683                                      struct snd_mixer_oss_slot *pslot,
 684                                      int left, int right)
 685 {
 686         struct slot *slot = (struct slot *)pslot->private_data;
 687
 688         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 689                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 690                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 691                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 692         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 693                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 694         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 695                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 696         }
 697         if (left || right) {
 698                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 699                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 700                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 701                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 702                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 703                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 704                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 705                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 706         } else {
 707                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 708                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 709                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 710                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 711                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 712                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 713                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 715                 }
 716         }
 717         return 0;
 718 }
 719
 720 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 721                                         struct snd_mixer_oss_slot *pslot,
 722                                         int *active)
 723 {
 724         struct slot *slot = (struct slot *)pslot->private_data;
 725         int left, right;
 726
 727         left = right = 1;
 728         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 729         *active = (left || right) ? 1 : 0;
 730         return 0;
 731 }
 732
 733 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 734                                            struct snd_mixer_oss_slot *pslot,
 735                                            int *active)
 736 {
 737         struct slot *slot = (struct slot *)pslot->private_data;
 738         int left, right;
 739
 740         left = right = 1;
 741         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 742         *active = (left || right) ? 1 : 0;
 743         return 0;
 744 }
 745
 746 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 747                                         struct snd_mixer_oss_slot *pslot,
 748                                         int active)
 749 {
 750         struct slot *slot = (struct slot *)pslot->private_data;
 751
 752         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 753         return 0;
 754 }
 755
 756 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 757                                            struct snd_mixer_oss_slot *pslot,
 758                                            int active)
 759 {
 760         struct slot *slot = (struct slot *)pslot->private_data;
 761
 762         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 763         return 0;
 764 }
 765
 766 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 767 {
 768         struct snd_card *card = fmixer->card;
 769         struct snd_mixer_oss *mixer = fmixer->mixer;
 770         struct snd_kcontrol *kctl;
 771         struct snd_mixer_oss_slot *pslot;
 772         struct slot *slot;
 773         struct snd_ctl_elem_info *uinfo;
 774         struct snd_ctl_elem_value *uctl;
 775         int err, idx;
 776
 777         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 778         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 779         if (uinfo == NULL || uctl == NULL) {
 780                 err = -ENOMEM;
 781                 goto __unlock;
 782         }
 783         down_read(&card->controls_rwsem);
 784         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 785         if (! kctl) {
 786                 err = -ENOENT;
 787                 goto __unlock;
 788         }
 789         if ((err = kctl->info(kctl, uinfo)) < 0)
 790                 goto __unlock;
 791         if ((err = kctl->get(kctl, uctl)) < 0)
 792                 goto __unlock;
 793         for (idx = 0; idx < 32; idx++) {
 794                 if (!(mixer->mask_recsrc & (1 << idx)))
 795                         continue;
 796                 pslot = &mixer->slots[idx];
 797                 slot = (struct slot *)pslot->private_data;
 798                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 799                         continue;
 800                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 801                         continue;
 802                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 803                         *active_index = idx;
 804                         break;
 805                 }
 806         }
 807         err = 0;
 808       __unlock:
 809         up_read(&card->controls_rwsem);
 810         kfree(uctl);
 811         kfree(uinfo);
 812         return err;
 813 }
 814
 815 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 816 {
 817         struct snd_card *card = fmixer->card;
 818         struct snd_mixer_oss *mixer = fmixer->mixer;
 819         struct snd_kcontrol *kctl;
 820         struct snd_mixer_oss_slot *pslot;
 821         struct slot *slot = NULL;
 822         struct snd_ctl_elem_info *uinfo;
 823         struct snd_ctl_elem_value *uctl;
 824         int err;
 825         unsigned int idx;
 826
 827         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 828         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 829         if (uinfo == NULL || uctl == NULL) {
 830                 err = -ENOMEM;
 831                 goto __unlock;
 832         }
 833         down_read(&card->controls_rwsem);
 834         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 835         if (! kctl) {
 836                 err = -ENOENT;
 837                 goto __unlock;
 838         }
 839         if ((err = kctl->info(kctl, uinfo)) < 0)
 840                 goto __unlock;
 841         for (idx = 0; idx < 32; idx++) {
 842                 if (!(mixer->mask_recsrc & (1 << idx)))
 843                         continue;
 844                 pslot = &mixer->slots[idx];
 845                 slot = (struct slot *)pslot->private_data;
 846                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 847                         continue;
 848                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 849                         continue;
 850                 if (idx == active_index)
 851                         break;
 852                 slot = NULL;
 853         }
 854         if (! slot)
 855                 goto __unlock;
 856         for (idx = 0; idx < uinfo->count; idx++)
 857                 uctl->value.enumerated.item[idx] = slot->capture_item;
 858         err = kctl->put(kctl, uctl);
 859         if (err > 0)
 860                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 861         err = 0;
 862       __unlock:
 863         up_read(&card->controls_rwsem);
 864         kfree(uctl);
 865         kfree(uinfo);
 866         return err;
 867 }
 868
 869 struct snd_mixer_oss_assign_table {
 870         int oss_id;
 871         const char *name;
 872         int index;
 873 };
 874
 875 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 876 {
 877         struct snd_ctl_elem_info *info;
 878         struct snd_kcontrol *kcontrol;
 879         struct snd_card *card = mixer->card;
 880         int err;
 881
 882         down_read(&card->controls_rwsem);
 883         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 884         if (kcontrol == NULL) {
 885                 up_read(&card->controls_rwsem);
 886                 return 0;
 887         }
 888         info = kmalloc(sizeof(*info), GFP_KERNEL);
 889         if (! info) {
 890                 up_read(&card->controls_rwsem);
 891                 return -ENOMEM;
 892         }
 893         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 894                 up_read(&card->controls_rwsem);
 895                 kfree(info);
 896                 return err;
 897         }
 898         slot->numid[item] = kcontrol->id.numid;
 899         up_read(&card->controls_rwsem);
 900         if (info->count > slot->channels)
 901                 slot->channels = info->count;
 902         slot->present |= 1 << item;
 903         kfree(info);
 904         return 0;
 905 }
 906
 907 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 908 {
 909         struct slot *p = (struct slot *)chn->private_data;
 910         if (p) {
 911                 if (p->allocated && p->assigned) {
 912                         kfree(p->assigned->name);
 913                         kfree(p->assigned);
 914                 }
 915                 kfree(p);
 916         }
 917 }
 918
 919 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 920 {
 921         int idx = rslot->number; /* remember this */
 922         if (rslot->private_free)
 923                 rslot->private_free(rslot);
 924         memset(rslot, 0, sizeof(*rslot));
 925         rslot->number = idx;
 926 }
 927
 928 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 929    snd_mixer_oss_build_input! */
 930 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 931                                         struct snd_mixer_oss_assign_table *ptr,
 932                                         struct slot *slot)
 933 {
 934         char str[64];
 935         int err;
 936
 937         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 938                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 939         if (err)
 940                 return err;
 941         sprintf(str, "%s Switch", ptr->name);
 942         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 943                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 944         if (err)
 945                 return err;
 946         sprintf(str, "%s Route", ptr->name);
 947         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 948                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 949         if (err)
 950                 return err;
 951         sprintf(str, "%s Volume", ptr->name);
 952         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 953                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 954         if (err)
 955                 return err;
 956         sprintf(str, "%s Playback Switch", ptr->name);
 957         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 958                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 959         if (err)
 960                 return err;
 961         sprintf(str, "%s Playback Route", ptr->name);
 962         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 963                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
 964         if (err)
 965                 return err;
 966         sprintf(str, "%s Playback Volume", ptr->name);
 967         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 968                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
 969         if (err)
 970                 return err;
 971         sprintf(str, "%s Capture Switch", ptr->name);
 972         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 973                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
 974         if (err)
 975                 return err;
 976         sprintf(str, "%s Capture Route", ptr->name);
 977         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 978                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
 979         if (err)
 980                 return err;
 981         sprintf(str, "%s Capture Volume", ptr->name);
 982         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 983                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
 984         if (err)
 985                 return err;
 986
 987         return 0;
 988 }
 989
 990 /*
 991  * build an OSS mixer element.
 992  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 993  * when replace_old = 1, the old entry is replaced with the new one.
 994  */
 995 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
 996 {
 997         struct slot slot;
 998         struct slot *pslot;
 999         struct snd_kcontrol *kctl;
1000         struct snd_mixer_oss_slot *rslot;
1001         char str[64];
1002
1003         /* check if already assigned */
1004         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1005                 return 0;
1006
1007         memset(&slot, 0, sizeof(slot));
1008         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1009         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1010                 return 0;
1011         down_read(&mixer->card->controls_rwsem);
1012         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1013                 struct snd_ctl_elem_info *uinfo;
1014
1015                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1016                 if (! uinfo) {
1017                         up_read(&mixer->card->controls_rwsem);
1018                         return -ENOMEM;
1019                 }
1020
1021                 if (kctl->info(kctl, uinfo)) {
1022                         up_read(&mixer->card->controls_rwsem);
1023                         return 0;
1024                 }
1025                 strcpy(str, ptr->name);
1026                 if (!strcmp(str, "Master"))
1027                         strcpy(str, "Mix");
1028                 if (!strcmp(str, "Master Mono"))
1029                         strcpy(str, "Mix Mono");
1030                 slot.capture_item = 0;
1031                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1032                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1033                 } else {
1034                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1035                                 uinfo->value.enumerated.item = slot.capture_item;
1036                                 if (kctl->info(kctl, uinfo)) {
1037                                         up_read(&mixer->card->controls_rwsem);
1038                                         return 0;
1039                                 }
1040                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1041                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1042                                         break;
1043                                 }
1044                         }
1045                 }
1046                 kfree(uinfo);
1047         }
1048         up_read(&mixer->card->controls_rwsem);
1049         if (slot.present != 0) {
1050                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1051                 if (! pslot)
1052                         return -ENOMEM;
1053                 *pslot = slot;
1054                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1055                 pslot->assigned = ptr;
1056                 pslot->allocated = ptr_allocated;
1057                 rslot = &mixer->slots[ptr->oss_id];
1058                 mixer_slot_clear(rslot);
1059                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1060                 rslot->get_volume = snd_mixer_oss_get_volume1;
1061                 rslot->put_volume = snd_mixer_oss_put_volume1;
1062                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1063                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1064                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1065                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1066                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1067                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1068                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1069                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1070                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1071                 }
1072                 rslot->private_data = pslot;
1073                 rslot->private_free = snd_mixer_oss_slot_free;
1074                 return 1;
1075         }
1076         return 0;
1077 }
1078
1079 #ifdef CONFIG_PROC_FS
1080 /*
1081  */
1082 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1083 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1084         MIXER_VOL(VOLUME),
1085         MIXER_VOL(BASS),
1086         MIXER_VOL(TREBLE),
1087         MIXER_VOL(SYNTH),
1088         MIXER_VOL(PCM),
1089         MIXER_VOL(SPEAKER),
1090         MIXER_VOL(LINE),
1091         MIXER_VOL(MIC),
1092         MIXER_VOL(CD),
1093         MIXER_VOL(IMIX),
1094         MIXER_VOL(ALTPCM),
1095         MIXER_VOL(RECLEV),
1096         MIXER_VOL(IGAIN),
1097         MIXER_VOL(OGAIN),
1098         MIXER_VOL(LINE1),
1099         MIXER_VOL(LINE2),
1100         MIXER_VOL(LINE3),
1101         MIXER_VOL(DIGITAL1),
1102         MIXER_VOL(DIGITAL2),
1103         MIXER_VOL(DIGITAL3),
1104         MIXER_VOL(PHONEIN),
1105         MIXER_VOL(PHONEOUT),
1106         MIXER_VOL(VIDEO),
1107         MIXER_VOL(RADIO),
1108         MIXER_VOL(MONITOR),
1109 };
1110
1111 /*
1112  *  /proc interface
1113  */
1114
1115 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1116                                     struct snd_info_buffer *buffer)
1117 {
1118         struct snd_mixer_oss *mixer = entry->private_data;
1119         int i;
1120
1121         mutex_lock(&mixer->reg_mutex);
1122         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1123                 struct slot *p;
1124
1125                 if (! oss_mixer_names[i])
1126                         continue;
1127                 p = (struct slot *)mixer->slots[i].private_data;
1128                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1129                 if (p && p->assigned)
1130                         snd_iprintf(buffer, "\"%s\" %d\n",
1131                                     p->assigned->name,
1132                                     p->assigned->index);
1133                 else
1134                         snd_iprintf(buffer, "\"\" 0\n");
1135         }
1136         mutex_unlock(&mixer->reg_mutex);
1137 }
1138
1139 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1140                                      struct snd_info_buffer *buffer)
1141 {
1142         struct snd_mixer_oss *mixer = entry->private_data;
1143         char line[128], str[32], idxstr[16], *cptr;
1144         int ch, idx;
1145         struct snd_mixer_oss_assign_table *tbl;
1146         struct slot *slot;
1147
1148         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1149                 cptr = snd_info_get_str(str, line, sizeof(str));
1150                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1151                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1152                                 break;
1153                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1154                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1155                         continue;
1156                 }
1157                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1158                 if (! *str) {
1159                         /* remove the entry */
1160                         mutex_lock(&mixer->reg_mutex);
1161                         mixer_slot_clear(&mixer->slots[ch]);
1162                         mutex_unlock(&mixer->reg_mutex);
1163                         continue;
1164                 }
1165                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1166                 idx = simple_strtoul(idxstr, NULL, 10);
1167                 if (idx >= 0x4000) { /* too big */
1168                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1169                         continue;
1170                 }
1171                 mutex_lock(&mixer->reg_mutex);
1172                 slot = (struct slot *)mixer->slots[ch].private_data;
1173                 if (slot && slot->assigned &&
1174                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1175                         /* not changed */
1176                         goto __unlock;
1177                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1178                 if (! tbl) {
1179                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1180                         goto __unlock;
1181                 }
1182                 tbl->oss_id = ch;
1183                 tbl->name = kstrdup(str, GFP_KERNEL);
1184                 if (! tbl->name) {
1185                         kfree(tbl);
1186                         goto __unlock;
1187                 }
1188                 tbl->index = idx;
1189                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1190                         kfree(tbl->name);
1191                         kfree(tbl);
1192                 }
1193         __unlock:
1194                 mutex_unlock(&mixer->reg_mutex);
1195         }
1196 }
1197
1198 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1199 {
1200         struct snd_info_entry *entry;
1201
1202         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1203                                            mixer->card->proc_root);
1204         if (! entry)
1205                 return;
1206         entry->content = SNDRV_INFO_CONTENT_TEXT;
1207         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1208         entry->c.text.read = snd_mixer_oss_proc_read;
1209         entry->c.text.write = snd_mixer_oss_proc_write;
1210         entry->private_data = mixer;
1211         if (snd_info_register(entry) < 0) {
1212                 snd_info_free_entry(entry);
1213                 entry = NULL;
1214         }
1215         mixer->proc_entry = entry;
1216 }
1217
1218 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1219 {
1220         snd_info_free_entry(mixer->proc_entry);
1221         mixer->proc_entry = NULL;
1222 }
1223 #else /* !CONFIG_PROC_FS */
1224 #define snd_mixer_oss_proc_init(mix)
1225 #define snd_mixer_oss_proc_done(mix)
1226 #endif /* CONFIG_PROC_FS */
1227
1228 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1229 {
1230         static struct snd_mixer_oss_assign_table table[] = {
1231                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1232                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1233                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1234                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1235                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1236                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1237                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1238                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1239                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1240                 { SOUND_MIXER_LINE,     "Line",                 0 },
1241                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1242                 { SOUND_MIXER_CD,       "CD",                   0 },
1243                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1244                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1245                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1246                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1247                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1248                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1249                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1250                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1251                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1252                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1253                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1254                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1255                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1256                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1257                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1258                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1259                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1260                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1261                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1262                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1263                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1264                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1265         };
1266         unsigned int idx;
1267
1268         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1269                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1270         if (mixer->mask_recsrc) {
1271                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1272                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1273         }
1274 }
1275
1276 /*
1277  *
1278  */
1279
1280 static int snd_mixer_oss_free1(void *private)
1281 {
1282         struct snd_mixer_oss *mixer = private;
1283         struct snd_card *card;
1284         int idx;
1285
1286         snd_assert(mixer != NULL, return -ENXIO);
1287         card = mixer->card;
1288         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1289         card->mixer_oss = NULL;
1290         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1291                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1292                 if (chn->private_free)
1293                         chn->private_free(chn);
1294         }
1295         kfree(mixer);
1296         return 0;
1297 }
1298
1299 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1300 {
1301         struct snd_mixer_oss *mixer;
1302
1303         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1304                 char name[128];
1305                 int idx, err;
1306
1307                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1308                 if (mixer == NULL)
1309                         return -ENOMEM;
1310                 mutex_init(&mixer->reg_mutex);
1311                 sprintf(name, "mixer%i%i", card->number, 0);
1312                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1313                                                    card, 0,
1314                                                    &snd_mixer_oss_f_ops, card,
1315                                                    name)) < 0) {
1316                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1317                                    card->number, 0);
1318                         kfree(mixer);
1319                         return err;
1320                 }
1321                 mixer->oss_dev_alloc = 1;
1322                 mixer->card = card;
1323                 if (*card->mixername)
1324                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1325                 else
1326                         strlcpy(mixer->name, name, sizeof(mixer->name));
1327 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1328                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1329                                       card->number,
1330                                       mixer->name);
1331 #endif
1332                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1333                         mixer->slots[idx].number = idx;
1334                 card->mixer_oss = mixer;
1335                 snd_mixer_oss_build(mixer);
1336                 snd_mixer_oss_proc_init(mixer);
1337         } else {
1338                 mixer = card->mixer_oss;
1339                 if (mixer == NULL)
1340                         return 0;
1341                 if (mixer->oss_dev_alloc) {
1342 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1343                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1344 #endif
1345                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1346                         mixer->oss_dev_alloc = 0;
1347                 }
1348                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1349                         return 0;
1350                 snd_mixer_oss_proc_done(mixer);
1351                 return snd_mixer_oss_free1(mixer);
1352         }
1353         return 0;
1354 }
1355
1356 static int __init alsa_mixer_oss_init(void)
1357 {
1358         int idx;
1359
1360         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1361         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1362                 if (snd_cards[idx])
1363                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1364         }
1365         return 0;
1366 }
1367
1368 static void __exit alsa_mixer_oss_exit(void)
1369 {
1370         int idx;
1371
1372         snd_mixer_oss_notify_callback = NULL;
1373         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1374                 if (snd_cards[idx])
1375                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1376         }
1377 }
1378
1379 module_init(alsa_mixer_oss_init)
1380 module_exit(alsa_mixer_oss_exit)
1381
1382 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);