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 = 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                 unsigned int index;
 194                 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
 195                         return err;
 196                 result = 1 << index;
 197         } else {
 198                 struct snd_mixer_oss_slot *pslot;
 199                 int chn;
 200                 for (chn = 0; chn < 31; chn++) {
 201                         pslot = &mixer->slots[chn];
 202                         if (pslot->get_recsrc) {
 203                                 int active = 0;
 204                                 pslot->get_recsrc(fmixer, pslot, &active);
 205                                 if (active)
 206                                         result |= 1 << chn;
 207                         }
 208                 }
 209         }
 210         return mixer->oss_recsrc = result;
 211 }
 212
 213 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 214 {
 215         struct snd_mixer_oss *mixer = fmixer->mixer;
 216         struct snd_mixer_oss_slot *pslot;
 217         int chn, active;
 218         unsigned int index;
 219         int result = 0;
 220
 221         if (mixer == NULL)
 222                 return -EIO;
 223         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 224                 if (recsrc & ~mixer->oss_recsrc)
 225                         recsrc &= ~mixer->oss_recsrc;
 226                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 227                 mixer->get_recsrc(fmixer, &index);
 228                 result = 1 << index;
 229         }
 230         for (chn = 0; chn < 31; chn++) {
 231                 pslot = &mixer->slots[chn];
 232                 if (pslot->put_recsrc) {
 233                         active = (recsrc & (1 << chn)) ? 1 : 0;
 234                         pslot->put_recsrc(fmixer, pslot, active);
 235                 }
 236         }
 237         if (! result) {
 238                 for (chn = 0; chn < 31; chn++) {
 239                         pslot = &mixer->slots[chn];
 240                         if (pslot->get_recsrc) {
 241                                 active = 0;
 242                                 pslot->get_recsrc(fmixer, pslot, &active);
 243                                 if (active)
 244                                         result |= 1 << chn;
 245                         }
 246                 }
 247         }
 248         return result;
 249 }
 250
 251 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 252 {
 253         struct snd_mixer_oss *mixer = fmixer->mixer;
 254         struct snd_mixer_oss_slot *pslot;
 255         int result = 0, left, right;
 256
 257         if (mixer == NULL || slot > 30)
 258                 return -EIO;
 259         pslot = &mixer->slots[slot];
 260         left = pslot->volume[0];
 261         right = pslot->volume[1];
 262         if (pslot->get_volume)
 263                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 264         if (!pslot->stereo)
 265                 right = left;
 266         if (snd_BUG_ON(left < 0 || left > 100))
 267                 return -EIO;
 268         if (snd_BUG_ON(right < 0 || right > 100))
 269                 return -EIO;
 270         if (result >= 0) {
 271                 pslot->volume[0] = left;
 272                 pslot->volume[1] = right;
 273                 result = (left & 0xff) | ((right & 0xff) << 8);
 274         }
 275         return result;
 276 }
 277
 278 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 279                                     int slot, int volume)
 280 {
 281         struct snd_mixer_oss *mixer = fmixer->mixer;
 282         struct snd_mixer_oss_slot *pslot;
 283         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 284
 285         if (mixer == NULL || slot > 30)
 286                 return -EIO;
 287         pslot = &mixer->slots[slot];
 288         if (left > 100)
 289                 left = 100;
 290         if (right > 100)
 291                 right = 100;
 292         if (!pslot->stereo)
 293                 right = left;
 294         if (pslot->put_volume)
 295                 result = pslot->put_volume(fmixer, pslot, left, right);
 296         if (result < 0)
 297                 return result;
 298         pslot->volume[0] = left;
 299         pslot->volume[1] = right;
 300         return (left & 0xff) | ((right & 0xff) << 8);
 301 }
 302
 303 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 304 {
 305         void __user *argp = (void __user *)arg;
 306         int __user *p = argp;
 307         int tmp;
 308
 309         if (snd_BUG_ON(!fmixer))
 310                 return -ENXIO;
 311         if (((cmd >> 8) & 0xff) == 'M') {
 312                 switch (cmd) {
 313                 case SOUND_MIXER_INFO:
 314                         return snd_mixer_oss_info(fmixer, argp);
 315                 case SOUND_OLD_MIXER_INFO:
 316                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 317                 case SOUND_MIXER_WRITE_RECSRC:
 318                         if (get_user(tmp, p))
 319                                 return -EFAULT;
 320                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 321                         if (tmp < 0)
 322                                 return tmp;
 323                         return put_user(tmp, p);
 324                 case OSS_GETVERSION:
 325                         return put_user(SNDRV_OSS_VERSION, p);
 326                 case OSS_ALSAEMULVER:
 327                         return put_user(1, p);
 328                 case SOUND_MIXER_READ_DEVMASK:
 329                         tmp = snd_mixer_oss_devmask(fmixer);
 330                         if (tmp < 0)
 331                                 return tmp;
 332                         return put_user(tmp, p);
 333                 case SOUND_MIXER_READ_STEREODEVS:
 334                         tmp = snd_mixer_oss_stereodevs(fmixer);
 335                         if (tmp < 0)
 336                                 return tmp;
 337                         return put_user(tmp, p);
 338                 case SOUND_MIXER_READ_RECMASK:
 339                         tmp = snd_mixer_oss_recmask(fmixer);
 340                         if (tmp < 0)
 341                                 return tmp;
 342                         return put_user(tmp, p);
 343                 case SOUND_MIXER_READ_CAPS:
 344                         tmp = snd_mixer_oss_caps(fmixer);
 345                         if (tmp < 0)
 346                                 return tmp;
 347                         return put_user(tmp, p);
 348                 case SOUND_MIXER_READ_RECSRC:
 349                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 350                         if (tmp < 0)
 351                                 return tmp;
 352                         return put_user(tmp, p);
 353                 }
 354         }
 355         if (cmd & SIOC_IN) {
 356                 if (get_user(tmp, p))
 357                         return -EFAULT;
 358                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 359                 if (tmp < 0)
 360                         return tmp;
 361                 return put_user(tmp, p);
 362         } else if (cmd & SIOC_OUT) {
 363                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 364                 if (tmp < 0)
 365                         return tmp;
 366                 return put_user(tmp, p);
 367         }
 368         return -ENXIO;
 369 }
 370
 371 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 372 {
 373         return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 374 }
 375
 376 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 377 {
 378         struct snd_mixer_oss_file fmixer;
 379
 380         if (snd_BUG_ON(!card))
 381                 return -ENXIO;
 382         if (card->mixer_oss == NULL)
 383                 return -ENXIO;
 384         memset(&fmixer, 0, sizeof(fmixer));
 385         fmixer.card = card;
 386         fmixer.mixer = card->mixer_oss;
 387         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 388 }
 389
 390 #ifdef CONFIG_COMPAT
 391 /* all compatible */
 392 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 393 #else
 394 #define snd_mixer_oss_ioctl_compat      NULL
 395 #endif
 396
 397 /*
 398  *  REGISTRATION PART
 399  */
 400
 401 static const struct file_operations snd_mixer_oss_f_ops =
 402 {
 403         .owner =        THIS_MODULE,
 404         .open =         snd_mixer_oss_open,
 405         .release =      snd_mixer_oss_release,
 406         .llseek =       no_llseek,
 407         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 408         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 409 };
 410
 411 /*
 412  *  utilities
 413  */
 414
 415 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 416 {
 417         long orange = omax - omin, nrange = nmax - nmin;
 418
 419         if (orange == 0)
 420                 return 0;
 421         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 422 }
 423
 424 /* convert from alsa native to oss values (0-100) */
 425 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 426 {
 427         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 428                 return *old;
 429         return snd_mixer_oss_conv(val, min, max, 0, 100);
 430 }
 431
 432 /* convert from oss to alsa native values */
 433 static long snd_mixer_oss_conv2(long val, long min, long max)
 434 {
 435         return snd_mixer_oss_conv(val, 0, 100, min, max);
 436 }
 437
 438 #if 0
 439 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 440 {
 441         struct snd_mixer_oss *mixer = card->mixer_oss;
 442         if (mixer)
 443                 mixer->mask_recsrc |= 1 << slot;
 444 }
 445
 446 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 447 {
 448         struct snd_mixer_oss *mixer = card->mixer_oss;
 449         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 450                 return 1;
 451         return 0;
 452 }
 453 #endif
 454
 455 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 456
 457 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 458 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 459 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 460 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 461 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 462 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 463 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 464 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 465 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 466 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 467 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 468
 469 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 470
 471 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 472 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 473 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 474 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 475 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 476 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 477 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 478 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 479 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 480 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 481 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 482
 483 struct slot {
 484         unsigned int signature;
 485         unsigned int present;
 486         unsigned int channels;
 487         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 488         unsigned int capture_item;
 489         struct snd_mixer_oss_assign_table *assigned;
 490         unsigned int allocated: 1;
 491 };
 492
 493 #define ID_UNKNOWN      ((unsigned int)-1)
 494
 495 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 496 {
 497         struct snd_card *card = mixer->card;
 498         struct snd_ctl_elem_id id;
 499
 500         memset(&id, 0, sizeof(id));
 501         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 502         strlcpy(id.name, name, sizeof(id.name));
 503         id.index = index;
 504         return snd_ctl_find_id(card, &id);
 505 }
 506
 507 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 508                                           struct snd_mixer_oss_slot *pslot,
 509                                           unsigned int numid,
 510                                           int *left, int *right)
 511 {
 512         struct snd_ctl_elem_info *uinfo;
 513         struct snd_ctl_elem_value *uctl;
 514         struct snd_kcontrol *kctl;
 515         struct snd_card *card = fmixer->card;
 516
 517         if (numid == ID_UNKNOWN)
 518                 return;
 519         down_read(&card->controls_rwsem);
 520         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 521                 up_read(&card->controls_rwsem);
 522                 return;
 523         }
 524         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 525         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 526         if (uinfo == NULL || uctl == NULL)
 527                 goto __unalloc;
 528         if (kctl->info(kctl, uinfo))
 529                 goto __unalloc;
 530         if (kctl->get(kctl, uctl))
 531                 goto __unalloc;
 532         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 533             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 534                 goto __unalloc;
 535         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 536         if (uinfo->count > 1)
 537                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 538       __unalloc:
 539         up_read(&card->controls_rwsem);
 540         kfree(uctl);
 541         kfree(uinfo);
 542 }
 543
 544 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 545                                          struct snd_mixer_oss_slot *pslot,
 546                                          unsigned int numid,
 547                                          int *left, int *right,
 548                                          int route)
 549 {
 550         struct snd_ctl_elem_info *uinfo;
 551         struct snd_ctl_elem_value *uctl;
 552         struct snd_kcontrol *kctl;
 553         struct snd_card *card = fmixer->card;
 554
 555         if (numid == ID_UNKNOWN)
 556                 return;
 557         down_read(&card->controls_rwsem);
 558         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 559                 up_read(&card->controls_rwsem);
 560                 return;
 561         }
 562         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 563         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 564         if (uinfo == NULL || uctl == NULL)
 565                 goto __unalloc;
 566         if (kctl->info(kctl, uinfo))
 567                 goto __unalloc;
 568         if (kctl->get(kctl, uctl))
 569                 goto __unalloc;
 570         if (!uctl->value.integer.value[0]) {
 571                 *left = 0;
 572                 if (uinfo->count == 1)
 573                         *right = 0;
 574         }
 575         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 576                 *right = 0;
 577       __unalloc:
 578         up_read(&card->controls_rwsem);
 579         kfree(uctl);
 580         kfree(uinfo);
 581 }
 582
 583 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 584                                      struct snd_mixer_oss_slot *pslot,
 585                                      int *left, int *right)
 586 {
 587         struct slot *slot = pslot->private_data;
 588
 589         *left = *right = 100;
 590         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 591                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 592         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 593                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 594         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 595                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 596         }
 597         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 598                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 599         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 600                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 601         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 602                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 603         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 604                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 605         }
 606         return 0;
 607 }
 608
 609 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 610                                           struct snd_mixer_oss_slot *pslot,
 611                                           unsigned int numid,
 612                                           int left, int right)
 613 {
 614         struct snd_ctl_elem_info *uinfo;
 615         struct snd_ctl_elem_value *uctl;
 616         struct snd_kcontrol *kctl;
 617         struct snd_card *card = fmixer->card;
 618         int res;
 619
 620         if (numid == ID_UNKNOWN)
 621                 return;
 622         down_read(&card->controls_rwsem);
 623         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 624                 up_read(&card->controls_rwsem);
 625                 return;
 626         }
 627         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 628         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 629         if (uinfo == NULL || uctl == NULL)
 630                 goto __unalloc;
 631         if (kctl->info(kctl, uinfo))
 632                 goto __unalloc;
 633         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 634             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 635                 goto __unalloc;
 636         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 637         if (uinfo->count > 1)
 638                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 639         if ((res = kctl->put(kctl, uctl)) < 0)
 640                 goto __unalloc;
 641         if (res > 0)
 642                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 643       __unalloc:
 644         up_read(&card->controls_rwsem);
 645         kfree(uctl);
 646         kfree(uinfo);
 647 }
 648
 649 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 650                                          struct snd_mixer_oss_slot *pslot,
 651                                          unsigned int numid,
 652                                          int left, int right,
 653                                          int route)
 654 {
 655         struct snd_ctl_elem_info *uinfo;
 656         struct snd_ctl_elem_value *uctl;
 657         struct snd_kcontrol *kctl;
 658         struct snd_card *card = fmixer->card;
 659         int res;
 660
 661         if (numid == ID_UNKNOWN)
 662                 return;
 663         down_read(&card->controls_rwsem);
 664         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 665                 up_read(&card->controls_rwsem);
 666                 return;
 667         }
 668         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 669         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 670         if (uinfo == NULL || uctl == NULL)
 671                 goto __unalloc;
 672         if (kctl->info(kctl, uinfo))
 673                 goto __unalloc;
 674         if (uinfo->count > 1) {
 675                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 676                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 677                 if (route) {
 678                         uctl->value.integer.value[1] =
 679                         uctl->value.integer.value[2] = 0;
 680                 }
 681         } else {
 682                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 683         }
 684         if ((res = kctl->put(kctl, uctl)) < 0)
 685                 goto __unalloc;
 686         if (res > 0)
 687                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 688       __unalloc:
 689         up_read(&card->controls_rwsem);
 690         kfree(uctl);
 691         kfree(uinfo);
 692 }
 693
 694 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 695                                      struct snd_mixer_oss_slot *pslot,
 696                                      int left, int right)
 697 {
 698         struct slot *slot = pslot->private_data;
 699
 700         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 701                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 702                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 703                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 704         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 705                 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 706                         slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 707         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 708                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 709         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 710                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 711         }
 712         if (left || right) {
 713                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 715                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
 716                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 717                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 718                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 719                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 720                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 721                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
 722                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 723                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 724                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 725         } else {
 726                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 727                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 728                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 729                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 730                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 731                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 732                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 733                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 734                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 735                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 736                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 737                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 738                 }
 739         }
 740         return 0;
 741 }
 742
 743 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 744                                         struct snd_mixer_oss_slot *pslot,
 745                                         int *active)
 746 {
 747         struct slot *slot = pslot->private_data;
 748         int left, right;
 749
 750         left = right = 1;
 751         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 752         *active = (left || right) ? 1 : 0;
 753         return 0;
 754 }
 755
 756 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 757                                            struct snd_mixer_oss_slot *pslot,
 758                                            int *active)
 759 {
 760         struct slot *slot = pslot->private_data;
 761         int left, right;
 762
 763         left = right = 1;
 764         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 765         *active = (left || right) ? 1 : 0;
 766         return 0;
 767 }
 768
 769 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 770                                         struct snd_mixer_oss_slot *pslot,
 771                                         int active)
 772 {
 773         struct slot *slot = pslot->private_data;
 774
 775         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 776         return 0;
 777 }
 778
 779 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 780                                            struct snd_mixer_oss_slot *pslot,
 781                                            int active)
 782 {
 783         struct slot *slot = pslot->private_data;
 784
 785         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 786         return 0;
 787 }
 788
 789 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 790 {
 791         struct snd_card *card = fmixer->card;
 792         struct snd_mixer_oss *mixer = fmixer->mixer;
 793         struct snd_kcontrol *kctl;
 794         struct snd_mixer_oss_slot *pslot;
 795         struct slot *slot;
 796         struct snd_ctl_elem_info *uinfo;
 797         struct snd_ctl_elem_value *uctl;
 798         int err, idx;
 799
 800         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 801         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 802         if (uinfo == NULL || uctl == NULL) {
 803                 err = -ENOMEM;
 804                 goto __free_only;
 805         }
 806         down_read(&card->controls_rwsem);
 807         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 808         if (! kctl) {
 809                 err = -ENOENT;
 810                 goto __unlock;
 811         }
 812         if ((err = kctl->info(kctl, uinfo)) < 0)
 813                 goto __unlock;
 814         if ((err = kctl->get(kctl, uctl)) < 0)
 815                 goto __unlock;
 816         for (idx = 0; idx < 32; idx++) {
 817                 if (!(mixer->mask_recsrc & (1 << idx)))
 818                         continue;
 819                 pslot = &mixer->slots[idx];
 820                 slot = pslot->private_data;
 821                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 822                         continue;
 823                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 824                         continue;
 825                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 826                         *active_index = idx;
 827                         break;
 828                 }
 829         }
 830         err = 0;
 831       __unlock:
 832         up_read(&card->controls_rwsem);
 833       __free_only:
 834         kfree(uctl);
 835         kfree(uinfo);
 836         return err;
 837 }
 838
 839 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 840 {
 841         struct snd_card *card = fmixer->card;
 842         struct snd_mixer_oss *mixer = fmixer->mixer;
 843         struct snd_kcontrol *kctl;
 844         struct snd_mixer_oss_slot *pslot;
 845         struct slot *slot = NULL;
 846         struct snd_ctl_elem_info *uinfo;
 847         struct snd_ctl_elem_value *uctl;
 848         int err;
 849         unsigned int idx;
 850
 851         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 852         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 853         if (uinfo == NULL || uctl == NULL) {
 854                 err = -ENOMEM;
 855                 goto __free_only;
 856         }
 857         down_read(&card->controls_rwsem);
 858         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 859         if (! kctl) {
 860                 err = -ENOENT;
 861                 goto __unlock;
 862         }
 863         if ((err = kctl->info(kctl, uinfo)) < 0)
 864                 goto __unlock;
 865         for (idx = 0; idx < 32; idx++) {
 866                 if (!(mixer->mask_recsrc & (1 << idx)))
 867                         continue;
 868                 pslot = &mixer->slots[idx];
 869                 slot = pslot->private_data;
 870                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 871                         continue;
 872                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 873                         continue;
 874                 if (idx == active_index)
 875                         break;
 876                 slot = NULL;
 877         }
 878         if (! slot)
 879                 goto __unlock;
 880         for (idx = 0; idx < uinfo->count; idx++)
 881                 uctl->value.enumerated.item[idx] = slot->capture_item;
 882         err = kctl->put(kctl, uctl);
 883         if (err > 0)
 884                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 885         err = 0;
 886       __unlock:
 887         up_read(&card->controls_rwsem);
 888       __free_only:
 889         kfree(uctl);
 890         kfree(uinfo);
 891         return err;
 892 }
 893
 894 struct snd_mixer_oss_assign_table {
 895         int oss_id;
 896         const char *name;
 897         int index;
 898 };
 899
 900 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 901 {
 902         struct snd_ctl_elem_info *info;
 903         struct snd_kcontrol *kcontrol;
 904         struct snd_card *card = mixer->card;
 905         int err;
 906
 907         down_read(&card->controls_rwsem);
 908         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 909         if (kcontrol == NULL) {
 910                 up_read(&card->controls_rwsem);
 911                 return 0;
 912         }
 913         info = kmalloc(sizeof(*info), GFP_KERNEL);
 914         if (! info) {
 915                 up_read(&card->controls_rwsem);
 916                 return -ENOMEM;
 917         }
 918         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 919                 up_read(&card->controls_rwsem);
 920                 kfree(info);
 921                 return err;
 922         }
 923         slot->numid[item] = kcontrol->id.numid;
 924         up_read(&card->controls_rwsem);
 925         if (info->count > slot->channels)
 926                 slot->channels = info->count;
 927         slot->present |= 1 << item;
 928         kfree(info);
 929         return 0;
 930 }
 931
 932 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 933 {
 934         struct slot *p = chn->private_data;
 935         if (p) {
 936                 if (p->allocated && p->assigned) {
 937                         kfree(p->assigned->name);
 938                         kfree(p->assigned);
 939                 }
 940                 kfree(p);
 941         }
 942 }
 943
 944 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 945 {
 946         int idx = rslot->number; /* remember this */
 947         if (rslot->private_free)
 948                 rslot->private_free(rslot);
 949         memset(rslot, 0, sizeof(*rslot));
 950         rslot->number = idx;
 951 }
 952
 953 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 954    snd_mixer_oss_build_input! */
 955 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 956                                         struct snd_mixer_oss_assign_table *ptr,
 957                                         struct slot *slot)
 958 {
 959         char str[64];
 960         int err;
 961
 962         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 963                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 964         if (err)
 965                 return err;
 966         sprintf(str, "%s Switch", ptr->name);
 967         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 968                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 969         if (err)
 970                 return err;
 971         sprintf(str, "%s Route", ptr->name);
 972         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 973                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 974         if (err)
 975                 return err;
 976         sprintf(str, "%s Volume", ptr->name);
 977         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 978                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 979         if (err)
 980                 return err;
 981         sprintf(str, "%s Playback Switch", ptr->name);
 982         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 983                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 984         if (err)
 985                 return err;
 986         sprintf(str, "%s Playback Route", ptr->name);
 987         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 988                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
 989         if (err)
 990                 return err;
 991         sprintf(str, "%s Playback Volume", ptr->name);
 992         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 993                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
 994         if (err)
 995                 return err;
 996         sprintf(str, "%s Capture Switch", ptr->name);
 997         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 998                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
 999         if (err)
1000                 return err;
1001         sprintf(str, "%s Capture Route", ptr->name);
1002         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1003                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
1004         if (err)
1005                 return err;
1006         sprintf(str, "%s Capture Volume", ptr->name);
1007         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1008                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
1009         if (err)
1010                 return err;
1011
1012         return 0;
1013 }
1014
1015 /*
1016  * build an OSS mixer element.
1017  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1018  * when replace_old = 1, the old entry is replaced with the new one.
1019  */
1020 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)
1021 {
1022         struct slot slot;
1023         struct slot *pslot;
1024         struct snd_kcontrol *kctl;
1025         struct snd_mixer_oss_slot *rslot;
1026         char str[64];
1027
1028         /* check if already assigned */
1029         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1030                 return 0;
1031
1032         memset(&slot, 0, sizeof(slot));
1033         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1034         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1035                 return 0;
1036         down_read(&mixer->card->controls_rwsem);
1037         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1038                 struct snd_ctl_elem_info *uinfo;
1039
1040                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1041                 if (! uinfo) {
1042                         up_read(&mixer->card->controls_rwsem);
1043                         return -ENOMEM;
1044                 }
1045
1046                 if (kctl->info(kctl, uinfo)) {
1047                         up_read(&mixer->card->controls_rwsem);
1048                         return 0;
1049                 }
1050                 strcpy(str, ptr->name);
1051                 if (!strcmp(str, "Master"))
1052                         strcpy(str, "Mix");
1053                 if (!strcmp(str, "Master Mono"))
1054                         strcpy(str, "Mix Mono");
1055                 slot.capture_item = 0;
1056                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1057                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1058                 } else {
1059                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1060                                 uinfo->value.enumerated.item = slot.capture_item;
1061                                 if (kctl->info(kctl, uinfo)) {
1062                                         up_read(&mixer->card->controls_rwsem);
1063                                         return 0;
1064                                 }
1065                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1066                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1067                                         break;
1068                                 }
1069                         }
1070                 }
1071                 kfree(uinfo);
1072         }
1073         up_read(&mixer->card->controls_rwsem);
1074         if (slot.present != 0) {
1075                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1076                 if (! pslot)
1077                         return -ENOMEM;
1078                 *pslot = slot;
1079                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1080                 pslot->assigned = ptr;
1081                 pslot->allocated = ptr_allocated;
1082                 rslot = &mixer->slots[ptr->oss_id];
1083                 mixer_slot_clear(rslot);
1084                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1085                 rslot->get_volume = snd_mixer_oss_get_volume1;
1086                 rslot->put_volume = snd_mixer_oss_put_volume1;
1087                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1088                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1089                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1090                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1091                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1092                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1093                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1094                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1095                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1096                 }
1097                 rslot->private_data = pslot;
1098                 rslot->private_free = snd_mixer_oss_slot_free;
1099                 return 1;
1100         }
1101         return 0;
1102 }
1103
1104 #ifdef CONFIG_PROC_FS
1105 /*
1106  */
1107 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1108 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1109         MIXER_VOL(VOLUME),
1110         MIXER_VOL(BASS),
1111         MIXER_VOL(TREBLE),
1112         MIXER_VOL(SYNTH),
1113         MIXER_VOL(PCM),
1114         MIXER_VOL(SPEAKER),
1115         MIXER_VOL(LINE),
1116         MIXER_VOL(MIC),
1117         MIXER_VOL(CD),
1118         MIXER_VOL(IMIX),
1119         MIXER_VOL(ALTPCM),
1120         MIXER_VOL(RECLEV),
1121         MIXER_VOL(IGAIN),
1122         MIXER_VOL(OGAIN),
1123         MIXER_VOL(LINE1),
1124         MIXER_VOL(LINE2),
1125         MIXER_VOL(LINE3),
1126         MIXER_VOL(DIGITAL1),
1127         MIXER_VOL(DIGITAL2),
1128         MIXER_VOL(DIGITAL3),
1129         MIXER_VOL(PHONEIN),
1130         MIXER_VOL(PHONEOUT),
1131         MIXER_VOL(VIDEO),
1132         MIXER_VOL(RADIO),
1133         MIXER_VOL(MONITOR),
1134 };
1135
1136 /*
1137  *  /proc interface
1138  */
1139
1140 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1141                                     struct snd_info_buffer *buffer)
1142 {
1143         struct snd_mixer_oss *mixer = entry->private_data;
1144         int i;
1145
1146         mutex_lock(&mixer->reg_mutex);
1147         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1148                 struct slot *p;
1149
1150                 if (! oss_mixer_names[i])
1151                         continue;
1152                 p = (struct slot *)mixer->slots[i].private_data;
1153                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1154                 if (p && p->assigned)
1155                         snd_iprintf(buffer, "\"%s\" %d\n",
1156                                     p->assigned->name,
1157                                     p->assigned->index);
1158                 else
1159                         snd_iprintf(buffer, "\"\" 0\n");
1160         }
1161         mutex_unlock(&mixer->reg_mutex);
1162 }
1163
1164 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1165                                      struct snd_info_buffer *buffer)
1166 {
1167         struct snd_mixer_oss *mixer = entry->private_data;
1168         char line[128], str[32], idxstr[16];
1169         const char *cptr;
1170         int ch, idx;
1171         struct snd_mixer_oss_assign_table *tbl;
1172         struct slot *slot;
1173
1174         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1175                 cptr = snd_info_get_str(str, line, sizeof(str));
1176                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1177                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1178                                 break;
1179                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1180                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1181                         continue;
1182                 }
1183                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1184                 if (! *str) {
1185                         /* remove the entry */
1186                         mutex_lock(&mixer->reg_mutex);
1187                         mixer_slot_clear(&mixer->slots[ch]);
1188                         mutex_unlock(&mixer->reg_mutex);
1189                         continue;
1190                 }
1191                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1192                 idx = simple_strtoul(idxstr, NULL, 10);
1193                 if (idx >= 0x4000) { /* too big */
1194                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1195                         continue;
1196                 }
1197                 mutex_lock(&mixer->reg_mutex);
1198                 slot = (struct slot *)mixer->slots[ch].private_data;
1199                 if (slot && slot->assigned &&
1200                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1201                         /* not changed */
1202                         goto __unlock;
1203                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1204                 if (! tbl) {
1205                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1206                         goto __unlock;
1207                 }
1208                 tbl->oss_id = ch;
1209                 tbl->name = kstrdup(str, GFP_KERNEL);
1210                 if (! tbl->name) {
1211                         kfree(tbl);
1212                         goto __unlock;
1213                 }
1214                 tbl->index = idx;
1215                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1216                         kfree(tbl->name);
1217                         kfree(tbl);
1218                 }
1219         __unlock:
1220                 mutex_unlock(&mixer->reg_mutex);
1221         }
1222 }
1223
1224 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1225 {
1226         struct snd_info_entry *entry;
1227
1228         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1229                                            mixer->card->proc_root);
1230         if (! entry)
1231                 return;
1232         entry->content = SNDRV_INFO_CONTENT_TEXT;
1233         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1234         entry->c.text.read = snd_mixer_oss_proc_read;
1235         entry->c.text.write = snd_mixer_oss_proc_write;
1236         entry->private_data = mixer;
1237         if (snd_info_register(entry) < 0) {
1238                 snd_info_free_entry(entry);
1239                 entry = NULL;
1240         }
1241         mixer->proc_entry = entry;
1242 }
1243
1244 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1245 {
1246         snd_info_free_entry(mixer->proc_entry);
1247         mixer->proc_entry = NULL;
1248 }
1249 #else /* !CONFIG_PROC_FS */
1250 #define snd_mixer_oss_proc_init(mix)
1251 #define snd_mixer_oss_proc_done(mix)
1252 #endif /* CONFIG_PROC_FS */
1253
1254 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1255 {
1256         static struct snd_mixer_oss_assign_table table[] = {
1257                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1258                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1259                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1260                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1261                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1262                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1263                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1264                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1265                 { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1266                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1267                 { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1268                 { SOUND_MIXER_LINE,     "Line",                 0 },
1269                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1270                 { SOUND_MIXER_CD,       "CD",                   0 },
1271                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1272                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1273                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1274                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1275                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1276                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1277                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1278                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1279                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1280                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1281                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1282                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1283                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1284                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1285                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1286                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1287                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1288                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1289                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1290                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1291                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1292                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1293                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1294                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1295         };
1296         unsigned int idx;
1297
1298         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1299                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1300         if (mixer->mask_recsrc) {
1301                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1302                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1303         }
1304 }
1305
1306 /*
1307  *
1308  */
1309
1310 static int snd_mixer_oss_free1(void *private)
1311 {
1312         struct snd_mixer_oss *mixer = private;
1313         struct snd_card *card;
1314         int idx;
1315
1316         if (!mixer)
1317                 return 0;
1318         card = mixer->card;
1319         if (snd_BUG_ON(mixer != card->mixer_oss))
1320                 return -ENXIO;
1321         card->mixer_oss = NULL;
1322         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1323                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1324                 if (chn->private_free)
1325                         chn->private_free(chn);
1326         }
1327         kfree(mixer);
1328         return 0;
1329 }
1330
1331 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1332 {
1333         struct snd_mixer_oss *mixer;
1334
1335         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1336                 char name[128];
1337                 int idx, err;
1338
1339                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1340                 if (mixer == NULL)
1341                         return -ENOMEM;
1342                 mutex_init(&mixer->reg_mutex);
1343                 sprintf(name, "mixer%i%i", card->number, 0);
1344                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1345                                                    card, 0,
1346                                                    &snd_mixer_oss_f_ops, card,
1347                                                    name)) < 0) {
1348                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1349                                    card->number, 0);
1350                         kfree(mixer);
1351                         return err;
1352                 }
1353                 mixer->oss_dev_alloc = 1;
1354                 mixer->card = card;
1355                 if (*card->mixername)
1356                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1357                 else
1358                         strlcpy(mixer->name, name, sizeof(mixer->name));
1359 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1360                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1361                                       card->number,
1362                                       mixer->name);
1363 #endif
1364                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1365                         mixer->slots[idx].number = idx;
1366                 card->mixer_oss = mixer;
1367                 snd_mixer_oss_build(mixer);
1368                 snd_mixer_oss_proc_init(mixer);
1369         } else {
1370                 mixer = card->mixer_oss;
1371                 if (mixer == NULL)
1372                         return 0;
1373                 if (mixer->oss_dev_alloc) {
1374 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1375                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1376 #endif
1377                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1378                         mixer->oss_dev_alloc = 0;
1379                 }
1380                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1381                         return 0;
1382                 snd_mixer_oss_proc_done(mixer);
1383                 return snd_mixer_oss_free1(mixer);
1384         }
1385         return 0;
1386 }
1387
1388 static int __init alsa_mixer_oss_init(void)
1389 {
1390         int idx;
1391
1392         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1393         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1394                 if (snd_cards[idx])
1395                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1396         }
1397         return 0;
1398 }
1399
1400 static void __exit alsa_mixer_oss_exit(void)
1401 {
1402         int idx;
1403
1404         snd_mixer_oss_notify_callback = NULL;
1405         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1406                 if (snd_cards[idx])
1407                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1408         }
1409 }
1410
1411 module_init(alsa_mixer_oss_init)
1412 module_exit(alsa_mixer_oss_exit)
1413
1414 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);