sound/core/oss/mixer_oss.c

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