sound/core/oss/mixer_oss.c

   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/slab.h>
  24 #include <linux/time.h>
  25 #include <linux/string.h>
  26 #include <sound/core.h>
  27 #include <sound/minors.h>
  28 #include <sound/control.h>
  29 #include <sound/info.h>
  30 #include <sound/mixer_oss.h>
  31 #include <linux/soundcard.h>
  32
  33 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  34
  35 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  36 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  37 MODULE_LICENSE("GPL");
  38 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  39
  40 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  41 {
  42         struct snd_card *card;
  43         struct snd_mixer_oss_file *fmixer;
  44         int err;
  45
  46         err = nonseekable_open(inode, file);
  47         if (err < 0)
  48                 return err;
  49
  50         card = snd_lookup_oss_minor_data(iminor(inode),
  51                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  52         if (card == NULL)
  53                 return -ENODEV;
  54         if (card->mixer_oss == NULL)
  55                 return -ENODEV;
  56         err = snd_card_file_add(card, file);
  57         if (err < 0)
  58                 return err;
  59         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  60         if (fmixer == NULL) {
  61                 snd_card_file_remove(card, file);
  62                 return -ENOMEM;
  63         }
  64         fmixer->card = card;
  65         fmixer->mixer = card->mixer_oss;
  66         file->private_data = fmixer;
  67         if (!try_module_get(card->module)) {
  68                 kfree(fmixer);
  69                 snd_card_file_remove(card, file);
  70                 return -EFAULT;
  71         }
  72         return 0;
  73 }
  74
  75 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  76 {
  77         struct snd_mixer_oss_file *fmixer;
  78
  79         if (file->private_data) {
  80                 fmixer = (struct snd_mixer_oss_file *) file->private_data;
  81                 module_put(fmixer->card->module);
  82                 snd_card_file_remove(fmixer->card, file);
  83                 kfree(fmixer);
  84         }
  85         return 0;
  86 }
  87
  88 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  89                               mixer_info __user *_info)
  90 {
  91         struct snd_card *card = fmixer->card;
  92         struct snd_mixer_oss *mixer = fmixer->mixer;
  93         struct mixer_info info;
  94
  95         memset(&info, 0, sizeof(info));
  96         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
  97         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
  98         info.modify_counter = card->mixer_oss_change_count;
  99         if (copy_to_user(_info, &info, sizeof(info)))
 100                 return -EFAULT;
 101         return 0;
 102 }
 103
 104 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 105                                        _old_mixer_info __user *_info)
 106 {
 107         struct snd_card *card = fmixer->card;
 108         struct snd_mixer_oss *mixer = fmixer->mixer;
 109         _old_mixer_info info;
 110
 111         memset(&info, 0, sizeof(info));
 112         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 113         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 114         if (copy_to_user(_info, &info, sizeof(info)))
 115                 return -EFAULT;
 116         return 0;
 117 }
 118
 119 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 120 {
 121         struct snd_mixer_oss *mixer = fmixer->mixer;
 122         int result = 0;
 123
 124         if (mixer == NULL)
 125                 return -EIO;
 126         if (mixer->get_recsrc && mixer->put_recsrc)
 127                 result |= SOUND_CAP_EXCL_INPUT;
 128         return result;
 129 }
 130
 131 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 132 {
 133         struct snd_mixer_oss *mixer = fmixer->mixer;
 134         struct snd_mixer_oss_slot *pslot;
 135         int result = 0, chn;
 136
 137         if (mixer == NULL)
 138                 return -EIO;
 139         for (chn = 0; chn < 31; chn++) {
 140                 pslot = &mixer->slots[chn];
 141                 if (pslot->put_volume || pslot->put_recsrc)
 142                         result |= 1 << chn;
 143         }
 144         return result;
 145 }
 146
 147 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 148 {
 149         struct snd_mixer_oss *mixer = fmixer->mixer;
 150         struct snd_mixer_oss_slot *pslot;
 151         int result = 0, chn;
 152
 153         if (mixer == NULL)
 154                 return -EIO;
 155         for (chn = 0; chn < 31; chn++) {
 156                 pslot = &mixer->slots[chn];
 157                 if (pslot->put_volume && pslot->stereo)
 158                         result |= 1 << chn;
 159         }
 160         return result;
 161 }
 162
 163 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 164 {
 165         struct snd_mixer_oss *mixer = fmixer->mixer;
 166         int result = 0;
 167
 168         if (mixer == NULL)
 169                 return -EIO;
 170         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 171                 result = mixer->mask_recsrc;
 172         } else {
 173                 struct snd_mixer_oss_slot *pslot;
 174                 int chn;
 175                 for (chn = 0; chn < 31; chn++) {
 176                         pslot = &mixer->slots[chn];
 177                         if (pslot->put_recsrc)
 178                                 result |= 1 << chn;
 179                 }
 180         }
 181         return result;
 182 }
 183
 184 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 185 {
 186         struct snd_mixer_oss *mixer = fmixer->mixer;
 187         int result = 0;
 188
 189         if (mixer == NULL)
 190                 return -EIO;
 191         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 192                 int err;
 193                 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
 194                         return err;
 195                 result = 1 << result;
 196         } else {
 197                 struct snd_mixer_oss_slot *pslot;
 198                 int chn;
 199                 for (chn = 0; chn < 31; chn++) {
 200                         pslot = &mixer->slots[chn];
 201                         if (pslot->get_recsrc) {
 202                                 int active = 0;
 203                                 pslot->get_recsrc(fmixer, pslot, &active);
 204                                 if (active)
 205                                         result |= 1 << chn;
 206                         }
 207                 }
 208         }
 209         return mixer->oss_recsrc = result;
 210 }
 211
 212 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 213 {
 214         struct snd_mixer_oss *mixer = fmixer->mixer;
 215         struct snd_mixer_oss_slot *pslot;
 216         int chn, active;
 217         int result = 0;
 218
 219         if (mixer == NULL)
 220                 return -EIO;
 221         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 222                 if (recsrc & ~mixer->oss_recsrc)
 223                         recsrc &= ~mixer->oss_recsrc;
 224                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 225                 mixer->get_recsrc(fmixer, &result);
 226                 result = 1 << result;
 227         }
 228         for (chn = 0; chn < 31; chn++) {
 229                 pslot = &mixer->slots[chn];
 230                 if (pslot->put_recsrc) {
 231                         active = (recsrc & (1 << chn)) ? 1 : 0;
 232                         pslot->put_recsrc(fmixer, pslot, active);
 233                 }
 234         }
 235         if (! result) {
 236                 for (chn = 0; chn < 31; chn++) {
 237                         pslot = &mixer->slots[chn];
 238                         if (pslot->get_recsrc) {
 239                                 active = 0;
 240                                 pslot->get_recsrc(fmixer, pslot, &active);
 241                                 if (active)
 242                                         result |= 1 << chn;
 243                         }
 244                 }
 245         }
 246         return result;
 247 }
 248
 249 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 250 {
 251         struct snd_mixer_oss *mixer = fmixer->mixer;
 252         struct snd_mixer_oss_slot *pslot;
 253         int result = 0, left, right;
 254
 255         if (mixer == NULL || slot > 30)
 256                 return -EIO;
 257         pslot = &mixer->slots[slot];
 258         left = pslot->volume[0];
 259         right = pslot->volume[1];
 260         if (pslot->get_volume)
 261                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 262         if (!pslot->stereo)
 263                 right = left;
 264         if (snd_BUG_ON(left < 0 || left > 100))
 265                 return -EIO;
 266         if (snd_BUG_ON(right < 0 || right > 100))
 267                 return -EIO;
 268         if (result >= 0) {
 269                 pslot->volume[0] = left;
 270                 pslot->volume[1] = right;
 271                 result = (left & 0xff) | ((right & 0xff) << 8);
 272         }
 273         return result;
 274 }
 275
 276 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 277                                     int slot, int volume)
 278 {
 279         struct snd_mixer_oss *mixer = fmixer->mixer;
 280         struct snd_mixer_oss_slot *pslot;
 281         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 282
 283         if (mixer == NULL || slot > 30)
 284                 return -EIO;
 285         pslot = &mixer->slots[slot];
 286         if (left > 100)
 287                 left = 100;
 288         if (right > 100)
 289                 right = 100;
 290         if (!pslot->stereo)
 291                 right = left;
 292         if (pslot->put_volume)
 293                 result = pslot->put_volume(fmixer, pslot, left, right);
 294         if (result < 0)
 295                 return result;
 296         pslot->volume[0] = left;
 297         pslot->volume[1] = right;
 298         return (left & 0xff) | ((right & 0xff) << 8);
 299 }
 300
 301 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 302 {
 303         void __user *argp = (void __user *)arg;
 304         int __user *p = argp;
 305         int tmp;
 306
 307         if (snd_BUG_ON(!fmixer))
 308                 return -ENXIO;
 309         if (((cmd >> 8) & 0xff) == 'M') {
 310                 switch (cmd) {
 311                 case SOUND_MIXER_INFO:
 312                         return snd_mixer_oss_info(fmixer, argp);
 313                 case SOUND_OLD_MIXER_INFO:
 314                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 315                 case SOUND_MIXER_WRITE_RECSRC:
 316                         if (get_user(tmp, p))
 317                                 return -EFAULT;
 318                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 319                         if (tmp < 0)
 320                                 return tmp;
 321                         return put_user(tmp, p);
 322                 case OSS_GETVERSION:
 323                         return put_user(SNDRV_OSS_VERSION, p);
 324                 case OSS_ALSAEMULVER:
 325                         return put_user(1, p);
 326                 case SOUND_MIXER_READ_DEVMASK:
 327                         tmp = snd_mixer_oss_devmask(fmixer);
 328                         if (tmp < 0)
 329                                 return tmp;
 330                         return put_user(tmp, p);
 331                 case SOUND_MIXER_READ_STEREODEVS:
 332                         tmp = snd_mixer_oss_stereodevs(fmixer);
 333                         if (tmp < 0)
 334                                 return tmp;
 335                         return put_user(tmp, p);
 336                 case SOUND_MIXER_READ_RECMASK:
 337                         tmp = snd_mixer_oss_recmask(fmixer);
 338                         if (tmp < 0)
 339                                 return tmp;
 340                         return put_user(tmp, p);
 341                 case SOUND_MIXER_READ_CAPS:
 342                         tmp = snd_mixer_oss_caps(fmixer);
 343                         if (tmp < 0)
 344                                 return tmp;
 345                         return put_user(tmp, p);
 346                 case SOUND_MIXER_READ_RECSRC:
 347                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 348                         if (tmp < 0)
 349                                 return tmp;
 350                         return put_user(tmp, p);
 351                 }
 352         }
 353         if (cmd & SIOC_IN) {
 354                 if (get_user(tmp, p))
 355                         return -EFAULT;
 356                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 357                 if (tmp < 0)
 358                         return tmp;
 359                 return put_user(tmp, p);
 360         } else if (cmd & SIOC_OUT) {
 361                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 362                 if (tmp < 0)
 363                         return tmp;
 364                 return put_user(tmp, p);
 365         }
 366         return -ENXIO;
 367 }
 368
 369 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 370 {
 371         return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
 372 }
 373
 374 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 375 {
 376         struct snd_mixer_oss_file fmixer;
 377
 378         if (snd_BUG_ON(!card))
 379                 return -ENXIO;
 380         if (card->mixer_oss == NULL)
 381                 return -ENXIO;
 382         memset(&fmixer, 0, sizeof(fmixer));
 383         fmixer.card = card;
 384         fmixer.mixer = card->mixer_oss;
 385         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 386 }
 387
 388 #ifdef CONFIG_COMPAT
 389 /* all compatible */
 390 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 391 #else
 392 #define snd_mixer_oss_ioctl_compat      NULL
 393 #endif
 394
 395 /*
 396  *  REGISTRATION PART
 397  */
 398
 399 static const struct file_operations snd_mixer_oss_f_ops =
 400 {
 401         .owner =        THIS_MODULE,
 402         .open =         snd_mixer_oss_open,
 403         .release =      snd_mixer_oss_release,
 404         .llseek =       no_llseek,
 405         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 406         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 407 };
 408
 409 /*
 410  *  utilities
 411  */
 412
 413 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 414 {
 415         long orange = omax - omin, nrange = nmax - nmin;
 416
 417         if (orange == 0)
 418                 return 0;
 419         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 420 }
 421
 422 /* convert from alsa native to oss values (0-100) */
 423 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 424 {
 425         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 426                 return *old;
 427         return snd_mixer_oss_conv(val, min, max, 0, 100);
 428 }
 429
 430 /* convert from oss to alsa native values */
 431 static long snd_mixer_oss_conv2(long val, long min, long max)
 432 {
 433         return snd_mixer_oss_conv(val, 0, 100, min, max);
 434 }
 435
 436 #if 0
 437 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 438 {
 439         struct snd_mixer_oss *mixer = card->mixer_oss;
 440         if (mixer)
 441                 mixer->mask_recsrc |= 1 << slot;
 442 }
 443
 444 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 445 {
 446         struct snd_mixer_oss *mixer = card->mixer_oss;
 447         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 448                 return 1;
 449         return 0;
 450 }
 451 #endif
 452
 453 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 454
 455 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 456 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 457 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 458 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 459 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 460 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 461 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 462 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 463 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 464 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 465 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 466
 467 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 468
 469 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 470 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 471 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 472 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 473 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 474 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 475 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 476 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 477 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 478 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 479 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 480
 481 struct slot {
 482         unsigned int signature;
 483         unsigned int present;
 484         unsigned int channels;
 485         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 486         unsigned int capture_item;
 487         struct snd_mixer_oss_assign_table *assigned;
 488         unsigned int allocated: 1;
 489 };
 490
 491 #define ID_UNKNOWN      ((unsigned int)-1)
 492
 493 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 494 {
 495         struct snd_card *card = mixer->card;
 496         struct snd_ctl_elem_id id;
 497
 498         memset(&id, 0, sizeof(id));
 499         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 500         strcpy(id.name, name);
 501         id.index = index;
 502         return snd_ctl_find_id(card, &id);
 503 }
 504
 505 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 506                                           struct snd_mixer_oss_slot *pslot,
 507                                           unsigned int numid,
 508                                           int *left, int *right)
 509 {
 510         struct snd_ctl_elem_info *uinfo;
 511         struct snd_ctl_elem_value *uctl;
 512         struct snd_kcontrol *kctl;
 513         struct snd_card *card = fmixer->card;
 514
 515         if (numid == ID_UNKNOWN)
 516                 return;
 517         down_read(&card->controls_rwsem);
 518         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 519                 up_read(&card->controls_rwsem);
 520                 return;
 521         }
 522         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 523         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 524         if (uinfo == NULL || uctl == NULL)
 525                 goto __unalloc;
 526         if (kctl->info(kctl, uinfo))
 527                 goto __unalloc;
 528         if (kctl->get(kctl, uctl))
 529                 goto __unalloc;
 530         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 531             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 532                 goto __unalloc;
 533         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 534         if (uinfo->count > 1)
 535                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 536       __unalloc:
 537         up_read(&card->controls_rwsem);
 538         kfree(uctl);
 539         kfree(uinfo);
 540 }
 541
 542 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 543                                          struct snd_mixer_oss_slot *pslot,
 544                                          unsigned int numid,
 545                                          int *left, int *right,
 546                                          int route)
 547 {
 548         struct snd_ctl_elem_info *uinfo;
 549         struct snd_ctl_elem_value *uctl;
 550         struct snd_kcontrol *kctl;
 551         struct snd_card *card = fmixer->card;
 552
 553         if (numid == ID_UNKNOWN)
 554                 return;
 555         down_read(&card->controls_rwsem);
 556         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 557                 up_read(&card->controls_rwsem);
 558                 return;
 559         }
 560         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 561         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 562         if (uinfo == NULL || uctl == NULL)
 563                 goto __unalloc;
 564         if (kctl->info(kctl, uinfo))
 565                 goto __unalloc;
 566         if (kctl->get(kctl, uctl))
 567                 goto __unalloc;
 568         if (!uctl->value.integer.value[0]) {
 569                 *left = 0;
 570                 if (uinfo->count == 1)
 571                         *right = 0;
 572         }
 573         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 574                 *right = 0;
 575       __unalloc:
 576         up_read(&card->controls_rwsem);
 577         kfree(uctl);
 578         kfree(uinfo);
 579 }
 580
 581 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 582                                      struct snd_mixer_oss_slot *pslot,
 583                                      int *left, int *right)
 584 {
 585         struct slot *slot = (struct slot *)pslot->private_data;
 586
 587         *left = *right = 100;
 588         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 589                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 590         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 591                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 592         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 593                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 594         }
 595         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 596                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 597         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 598                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 599         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 600                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 601         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 602                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 603         }
 604         return 0;
 605 }
 606
 607 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 608                                           struct snd_mixer_oss_slot *pslot,
 609                                           unsigned int numid,
 610                                           int left, int right)
 611 {
 612         struct snd_ctl_elem_info *uinfo;
 613         struct snd_ctl_elem_value *uctl;
 614         struct snd_kcontrol *kctl;
 615         struct snd_card *card = fmixer->card;
 616         int res;
 617
 618         if (numid == ID_UNKNOWN)
 619                 return;
 620         down_read(&card->controls_rwsem);
 621         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 622                 return;
 623         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 624         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 625         if (uinfo == NULL || uctl == NULL)
 626                 goto __unalloc;
 627         if (kctl->info(kctl, uinfo))
 628                 goto __unalloc;
 629         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 630             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 631                 goto __unalloc;
 632         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 633         if (uinfo->count > 1)
 634                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 635         if ((res = kctl->put(kctl, uctl)) < 0)
 636                 goto __unalloc;
 637         if (res > 0)
 638                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 639       __unalloc:
 640         up_read(&card->controls_rwsem);
 641         kfree(uctl);
 642         kfree(uinfo);
 643 }
 644
 645 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 646                                          struct snd_mixer_oss_slot *pslot,
 647                                          unsigned int numid,
 648                                          int left, int right,
 649                                          int route)
 650 {
 651         struct snd_ctl_elem_info *uinfo;
 652         struct snd_ctl_elem_value *uctl;
 653         struct snd_kcontrol *kctl;
 654         struct snd_card *card = fmixer->card;
 655         int res;
 656
 657         if (numid == ID_UNKNOWN)
 658                 return;
 659         down_read(&card->controls_rwsem);
 660         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 661                 up_read(&fmixer->card->controls_rwsem);
 662                 return;
 663         }
 664         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 665         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 666         if (uinfo == NULL || uctl == NULL)
 667                 goto __unalloc;
 668         if (kctl->info(kctl, uinfo))
 669                 goto __unalloc;
 670         if (uinfo->count > 1) {
 671                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 672                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 673                 if (route) {
 674                         uctl->value.integer.value[1] =
 675                         uctl->value.integer.value[2] = 0;
 676                 }
 677         } else {
 678                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 679         }
 680         if ((res = kctl->put(kctl, uctl)) < 0)
 681                 goto __unalloc;
 682         if (res > 0)
 683                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 684       __unalloc:
 685         up_read(&card->controls_rwsem);
 686         kfree(uctl);
 687         kfree(uinfo);
 688 }
 689
 690 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 691                                      struct snd_mixer_oss_slot *pslot,
 692                                      int left, int right)
 693 {
 694         struct slot *slot = (struct slot *)pslot->private_data;
 695
 696         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 697                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 698                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 699                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 700         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 701                 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 702                         slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 703         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 704                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 705         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 706                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 707         }
 708         if (left || right) {
 709                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 710                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 711                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
 712                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 713                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 715                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 716                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 717                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
 718                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 719                 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         } else {
 722                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 723                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 724                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 725                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 726                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 727                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 728                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 729                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 730                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 731                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 732                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 733                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 734                 }
 735         }
 736         return 0;
 737 }
 738
 739 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 740                                         struct snd_mixer_oss_slot *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_CSWITCH], &left, &right, 0);
 748         *active = (left || right) ? 1 : 0;
 749         return 0;
 750 }
 751
 752 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 753                                            struct snd_mixer_oss_slot *pslot,
 754                                            int *active)
 755 {
 756         struct slot *slot = (struct slot *)pslot->private_data;
 757         int left, right;
 758
 759         left = right = 1;
 760         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 761         *active = (left || right) ? 1 : 0;
 762         return 0;
 763 }
 764
 765 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 766                                         struct snd_mixer_oss_slot *pslot,
 767                                         int active)
 768 {
 769         struct slot *slot = (struct slot *)pslot->private_data;
 770
 771         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 772         return 0;
 773 }
 774
 775 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 776                                            struct snd_mixer_oss_slot *pslot,
 777                                            int active)
 778 {
 779         struct slot *slot = (struct slot *)pslot->private_data;
 780
 781         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 782         return 0;
 783 }
 784
 785 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 786 {
 787         struct snd_card *card = fmixer->card;
 788         struct snd_mixer_oss *mixer = fmixer->mixer;
 789         struct snd_kcontrol *kctl;
 790         struct snd_mixer_oss_slot *pslot;
 791         struct slot *slot;
 792         struct snd_ctl_elem_info *uinfo;
 793         struct snd_ctl_elem_value *uctl;
 794         int err, idx;
 795
 796         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 797         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 798         if (uinfo == NULL || uctl == NULL) {
 799                 err = -ENOMEM;
 800                 goto __unlock;
 801         }
 802         down_read(&card->controls_rwsem);
 803         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 804         if (! kctl) {
 805                 err = -ENOENT;
 806                 goto __unlock;
 807         }
 808         if ((err = kctl->info(kctl, uinfo)) < 0)
 809                 goto __unlock;
 810         if ((err = kctl->get(kctl, uctl)) < 0)
 811                 goto __unlock;
 812         for (idx = 0; idx < 32; idx++) {
 813                 if (!(mixer->mask_recsrc & (1 << idx)))
 814                         continue;
 815                 pslot = &mixer->slots[idx];
 816                 slot = (struct slot *)pslot->private_data;
 817                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 818                         continue;
 819                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 820                         continue;
 821                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 822                         *active_index = idx;
 823                         break;
 824                 }
 825         }
 826         err = 0;
 827       __unlock:
 828         up_read(&card->controls_rwsem);
 829         kfree(uctl);
 830         kfree(uinfo);
 831         return err;
 832 }
 833
 834 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 835 {
 836         struct snd_card *card = fmixer->card;
 837         struct snd_mixer_oss *mixer = fmixer->mixer;
 838         struct snd_kcontrol *kctl;
 839         struct snd_mixer_oss_slot *pslot;
 840         struct slot *slot = NULL;
 841         struct snd_ctl_elem_info *uinfo;
 842         struct snd_ctl_elem_value *uctl;
 843         int err;
 844         unsigned int idx;
 845
 846         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 847         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 848         if (uinfo == NULL || uctl == NULL) {
 849                 err = -ENOMEM;
 850                 goto __unlock;
 851         }
 852         down_read(&card->controls_rwsem);
 853         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 854         if (! kctl) {
 855                 err = -ENOENT;
 856                 goto __unlock;
 857         }
 858         if ((err = kctl->info(kctl, uinfo)) < 0)
 859                 goto __unlock;
 860         for (idx = 0; idx < 32; idx++) {
 861                 if (!(mixer->mask_recsrc & (1 << idx)))
 862                         continue;
 863                 pslot = &mixer->slots[idx];
 864                 slot = (struct slot *)pslot->private_data;
 865                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 866                         continue;
 867                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 868                         continue;
 869                 if (idx == active_index)
 870                         break;
 871                 slot = NULL;
 872         }
 873         if (! slot)
 874                 goto __unlock;
 875         for (idx = 0; idx < uinfo->count; idx++)
 876                 uctl->value.enumerated.item[idx] = slot->capture_item;
 877         err = kctl->put(kctl, uctl);
 878         if (err > 0)
 879                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 880         err = 0;
 881       __unlock:
 882         up_read(&card->controls_rwsem);
 883         kfree(uctl);
 884         kfree(uinfo);
 885         return err;
 886 }
 887
 888 struct snd_mixer_oss_assign_table {
 889         int oss_id;
 890         const char *name;
 891         int index;
 892 };
 893
 894 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 895 {
 896         struct snd_ctl_elem_info *info;
 897         struct snd_kcontrol *kcontrol;
 898         struct snd_card *card = mixer->card;
 899         int err;
 900
 901         down_read(&card->controls_rwsem);
 902         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 903         if (kcontrol == NULL) {
 904                 up_read(&card->controls_rwsem);
 905                 return 0;
 906         }
 907         info = kmalloc(sizeof(*info), GFP_KERNEL);
 908         if (! info) {
 909                 up_read(&card->controls_rwsem);
 910                 return -ENOMEM;
 911         }
 912         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 913                 up_read(&card->controls_rwsem);
 914                 kfree(info);
 915                 return err;
 916         }
 917         slot->numid[item] = kcontrol->id.numid;
 918         up_read(&card->controls_rwsem);
 919         if (info->count > slot->channels)
 920                 slot->channels = info->count;
 921         slot->present |= 1 << item;
 922         kfree(info);
 923         return 0;
 924 }
 925
 926 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 927 {
 928         struct slot *p = (struct slot *)chn->private_data;
 929         if (p) {
 930                 if (p->allocated && p->assigned) {
 931                         kfree(p->assigned->name);
 932                         kfree(p->assigned);
 933                 }
 934                 kfree(p);
 935         }
 936 }
 937
 938 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 939 {
 940         int idx = rslot->number; /* remember this */
 941         if (rslot->private_free)
 942                 rslot->private_free(rslot);
 943         memset(rslot, 0, sizeof(*rslot));
 944         rslot->number = idx;
 945 }
 946
 947 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 948    snd_mixer_oss_build_input! */
 949 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 950                                         struct snd_mixer_oss_assign_table *ptr,
 951                                         struct slot *slot)
 952 {
 953         char str[64];
 954         int err;
 955
 956         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 957                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 958         if (err)
 959                 return err;
 960         sprintf(str, "%s Switch", ptr->name);
 961         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 962                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 963         if (err)
 964                 return err;
 965         sprintf(str, "%s Route", ptr->name);
 966         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 967                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 968         if (err)
 969                 return err;
 970         sprintf(str, "%s Volume", ptr->name);
 971         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 972                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 973         if (err)
 974                 return err;
 975         sprintf(str, "%s Playback Switch", ptr->name);
 976         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 977                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 978         if (err)
 979                 return err;
 980         sprintf(str, "%s Playback Route", ptr->name);
 981         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 982                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
 983         if (err)
 984                 return err;
 985         sprintf(str, "%s Playback Volume", ptr->name);
 986         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 987                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
 988         if (err)
 989                 return err;
 990         sprintf(str, "%s Capture Switch", ptr->name);
 991         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 992                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
 993         if (err)
 994                 return err;
 995         sprintf(str, "%s Capture Route", ptr->name);
 996         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 997                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
 998         if (err)
 999                 return err;
1000         sprintf(str, "%s Capture Volume", ptr->name);
1001         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1002                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
1003         if (err)
1004                 return err;
1005
1006         return 0;
1007 }
1008
1009 /*
1010  * build an OSS mixer element.
1011  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1012  * when replace_old = 1, the old entry is replaced with the new one.
1013  */
1014 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)
1015 {
1016         struct slot slot;
1017         struct slot *pslot;
1018         struct snd_kcontrol *kctl;
1019         struct snd_mixer_oss_slot *rslot;
1020         char str[64];
1021
1022         /* check if already assigned */
1023         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1024                 return 0;
1025
1026         memset(&slot, 0, sizeof(slot));
1027         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1028         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1029                 return 0;
1030         down_read(&mixer->card->controls_rwsem);
1031         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1032                 struct snd_ctl_elem_info *uinfo;
1033
1034                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1035                 if (! uinfo) {
1036                         up_read(&mixer->card->controls_rwsem);
1037                         return -ENOMEM;
1038                 }
1039
1040                 if (kctl->info(kctl, uinfo)) {
1041                         up_read(&mixer->card->controls_rwsem);
1042                         return 0;
1043                 }
1044                 strcpy(str, ptr->name);
1045                 if (!strcmp(str, "Master"))
1046                         strcpy(str, "Mix");
1047                 if (!strcmp(str, "Master Mono"))
1048                         strcpy(str, "Mix Mono");
1049                 slot.capture_item = 0;
1050                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1051                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1052                 } else {
1053                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1054                                 uinfo->value.enumerated.item = slot.capture_item;
1055                                 if (kctl->info(kctl, uinfo)) {
1056                                         up_read(&mixer->card->controls_rwsem);
1057                                         return 0;
1058                                 }
1059                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1060                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1061                                         break;
1062                                 }
1063                         }
1064                 }
1065                 kfree(uinfo);
1066         }
1067         up_read(&mixer->card->controls_rwsem);
1068         if (slot.present != 0) {
1069                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1070                 if (! pslot)
1071                         return -ENOMEM;
1072                 *pslot = slot;
1073                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1074                 pslot->assigned = ptr;
1075                 pslot->allocated = ptr_allocated;
1076                 rslot = &mixer->slots[ptr->oss_id];
1077                 mixer_slot_clear(rslot);
1078                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1079                 rslot->get_volume = snd_mixer_oss_get_volume1;
1080                 rslot->put_volume = snd_mixer_oss_put_volume1;
1081                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1082                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1083                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1084                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1085                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1086                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1087                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1088                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1089                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1090                 }
1091                 rslot->private_data = pslot;
1092                 rslot->private_free = snd_mixer_oss_slot_free;
1093                 return 1;
1094         }
1095         return 0;
1096 }
1097
1098 #ifdef CONFIG_PROC_FS
1099 /*
1100  */
1101 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1102 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1103         MIXER_VOL(VOLUME),
1104         MIXER_VOL(BASS),
1105         MIXER_VOL(TREBLE),
1106         MIXER_VOL(SYNTH),
1107         MIXER_VOL(PCM),
1108         MIXER_VOL(SPEAKER),
1109         MIXER_VOL(LINE),
1110         MIXER_VOL(MIC),
1111         MIXER_VOL(CD),
1112         MIXER_VOL(IMIX),
1113         MIXER_VOL(ALTPCM),
1114         MIXER_VOL(RECLEV),
1115         MIXER_VOL(IGAIN),
1116         MIXER_VOL(OGAIN),
1117         MIXER_VOL(LINE1),
1118         MIXER_VOL(LINE2),
1119         MIXER_VOL(LINE3),
1120         MIXER_VOL(DIGITAL1),
1121         MIXER_VOL(DIGITAL2),
1122         MIXER_VOL(DIGITAL3),
1123         MIXER_VOL(PHONEIN),
1124         MIXER_VOL(PHONEOUT),
1125         MIXER_VOL(VIDEO),
1126         MIXER_VOL(RADIO),
1127         MIXER_VOL(MONITOR),
1128 };
1129
1130 /*
1131  *  /proc interface
1132  */
1133
1134 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1135                                     struct snd_info_buffer *buffer)
1136 {
1137         struct snd_mixer_oss *mixer = entry->private_data;
1138         int i;
1139
1140         mutex_lock(&mixer->reg_mutex);
1141         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1142                 struct slot *p;
1143
1144                 if (! oss_mixer_names[i])
1145                         continue;
1146                 p = (struct slot *)mixer->slots[i].private_data;
1147                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1148                 if (p && p->assigned)
1149                         snd_iprintf(buffer, "\"%s\" %d\n",
1150                                     p->assigned->name,
1151                                     p->assigned->index);
1152                 else
1153                         snd_iprintf(buffer, "\"\" 0\n");
1154         }
1155         mutex_unlock(&mixer->reg_mutex);
1156 }
1157
1158 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1159                                      struct snd_info_buffer *buffer)
1160 {
1161         struct snd_mixer_oss *mixer = entry->private_data;
1162         char line[128], str[32], idxstr[16];
1163         const char *cptr;
1164         int ch, idx;
1165         struct snd_mixer_oss_assign_table *tbl;
1166         struct slot *slot;
1167
1168         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1169                 cptr = snd_info_get_str(str, line, sizeof(str));
1170                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1171                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1172                                 break;
1173                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1174                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1175                         continue;
1176                 }
1177                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1178                 if (! *str) {
1179                         /* remove the entry */
1180                         mutex_lock(&mixer->reg_mutex);
1181                         mixer_slot_clear(&mixer->slots[ch]);
1182                         mutex_unlock(&mixer->reg_mutex);
1183                         continue;
1184                 }
1185                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1186                 idx = simple_strtoul(idxstr, NULL, 10);
1187                 if (idx >= 0x4000) { /* too big */
1188                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1189                         continue;
1190                 }
1191                 mutex_lock(&mixer->reg_mutex);
1192                 slot = (struct slot *)mixer->slots[ch].private_data;
1193                 if (slot && slot->assigned &&
1194                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1195                         /* not changed */
1196                         goto __unlock;
1197                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1198                 if (! tbl) {
1199                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1200                         goto __unlock;
1201                 }
1202                 tbl->oss_id = ch;
1203                 tbl->name = kstrdup(str, GFP_KERNEL);
1204                 if (! tbl->name) {
1205                         kfree(tbl);
1206                         goto __unlock;
1207                 }
1208                 tbl->index = idx;
1209                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1210                         kfree(tbl->name);
1211                         kfree(tbl);
1212                 }
1213         __unlock:
1214                 mutex_unlock(&mixer->reg_mutex);
1215         }
1216 }
1217
1218 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1219 {
1220         struct snd_info_entry *entry;
1221
1222         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1223                                            mixer->card->proc_root);
1224         if (! entry)
1225                 return;
1226         entry->content = SNDRV_INFO_CONTENT_TEXT;
1227         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1228         entry->c.text.read = snd_mixer_oss_proc_read;
1229         entry->c.text.write = snd_mixer_oss_proc_write;
1230         entry->private_data = mixer;
1231         if (snd_info_register(entry) < 0) {
1232                 snd_info_free_entry(entry);
1233                 entry = NULL;
1234         }
1235         mixer->proc_entry = entry;
1236 }
1237
1238 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1239 {
1240         snd_info_free_entry(mixer->proc_entry);
1241         mixer->proc_entry = NULL;
1242 }
1243 #else /* !CONFIG_PROC_FS */
1244 #define snd_mixer_oss_proc_init(mix)
1245 #define snd_mixer_oss_proc_done(mix)
1246 #endif /* CONFIG_PROC_FS */
1247
1248 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1249 {
1250         static struct snd_mixer_oss_assign_table table[] = {
1251                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1252                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1253                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1254                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1255                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1256                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1257                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1258                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1259                 { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1260                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1261                 { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1262                 { SOUND_MIXER_LINE,     "Line",                 0 },
1263                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1264                 { SOUND_MIXER_CD,       "CD",                   0 },
1265                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1266                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1267                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1268                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1269                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1270                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1271                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1272                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1273                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1274                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1275                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1276                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1277                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1278                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1279                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1280                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1281                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1282                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1283                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1284                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1285                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1286                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1287                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1288                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1289         };
1290         unsigned int idx;
1291
1292         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1293                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1294         if (mixer->mask_recsrc) {
1295                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1296                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1297         }
1298 }
1299
1300 /*
1301  *
1302  */
1303
1304 static int snd_mixer_oss_free1(void *private)
1305 {
1306         struct snd_mixer_oss *mixer = private;
1307         struct snd_card *card;
1308         int idx;
1309
1310         if (!mixer)
1311                 return 0;
1312         card = mixer->card;
1313         if (snd_BUG_ON(mixer != card->mixer_oss))
1314                 return -ENXIO;
1315         card->mixer_oss = NULL;
1316         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1317                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1318                 if (chn->private_free)
1319                         chn->private_free(chn);
1320         }
1321         kfree(mixer);
1322         return 0;
1323 }
1324
1325 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1326 {
1327         struct snd_mixer_oss *mixer;
1328
1329         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1330                 char name[128];
1331                 int idx, err;
1332
1333                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1334                 if (mixer == NULL)
1335                         return -ENOMEM;
1336                 mutex_init(&mixer->reg_mutex);
1337                 sprintf(name, "mixer%i%i", card->number, 0);
1338                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1339                                                    card, 0,
1340                                                    &snd_mixer_oss_f_ops, card,
1341                                                    name)) < 0) {
1342                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1343                                    card->number, 0);
1344                         kfree(mixer);
1345                         return err;
1346                 }
1347                 mixer->oss_dev_alloc = 1;
1348                 mixer->card = card;
1349                 if (*card->mixername)
1350                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1351                 else
1352                         strlcpy(mixer->name, name, sizeof(mixer->name));
1353 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1354                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1355                                       card->number,
1356                                       mixer->name);
1357 #endif
1358                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1359                         mixer->slots[idx].number = idx;
1360                 card->mixer_oss = mixer;
1361                 snd_mixer_oss_build(mixer);
1362                 snd_mixer_oss_proc_init(mixer);
1363         } else {
1364                 mixer = card->mixer_oss;
1365                 if (mixer == NULL)
1366                         return 0;
1367                 if (mixer->oss_dev_alloc) {
1368 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1369                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1370 #endif
1371                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1372                         mixer->oss_dev_alloc = 0;
1373                 }
1374                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1375                         return 0;
1376                 snd_mixer_oss_proc_done(mixer);
1377                 return snd_mixer_oss_free1(mixer);
1378         }
1379         return 0;
1380 }
1381
1382 static int __init alsa_mixer_oss_init(void)
1383 {
1384         int idx;
1385
1386         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1387         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1388                 if (snd_cards[idx])
1389                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1390         }
1391         return 0;
1392 }
1393
1394 static void __exit alsa_mixer_oss_exit(void)
1395 {
1396         int idx;
1397
1398         snd_mixer_oss_notify_callback = NULL;
1399         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1400                 if (snd_cards[idx])
1401                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1402         }
1403 }
1404
1405 module_init(alsa_mixer_oss_init)
1406 module_exit(alsa_mixer_oss_exit)
1407
1408 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);