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 <linux/module.h>
  27 #include <sound/core.h>
  28 #include <sound/minors.h>
  29 #include <sound/control.h>
  30 #include <sound/info.h>
  31 #include <sound/mixer_oss.h>
  32 #include <linux/soundcard.h>
  33
  34 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  35
  36 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  38 MODULE_LICENSE("GPL");
  39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  40
  41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  42 {
  43         struct snd_card *card;
  44         struct snd_mixer_oss_file *fmixer;
  45         int err;
  46
  47         err = nonseekable_open(inode, file);
  48         if (err < 0)
  49                 return err;
  50
  51         card = snd_lookup_oss_minor_data(iminor(inode),
  52                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  53         if (card == NULL)
  54                 return -ENODEV;
  55         if (card->mixer_oss == NULL) {
  56                 snd_card_unref(card);
  57                 return -ENODEV;
  58         }
  59         err = snd_card_file_add(card, file);
  60         if (err < 0) {
  61                 snd_card_unref(card);
  62                 return err;
  63         }
  64         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  65         if (fmixer == NULL) {
  66                 snd_card_file_remove(card, file);
  67                 snd_card_unref(card);
  68                 return -ENOMEM;
  69         }
  70         fmixer->card = card;
  71         fmixer->mixer = card->mixer_oss;
  72         file->private_data = fmixer;
  73         if (!try_module_get(card->module)) {
  74                 kfree(fmixer);
  75                 snd_card_file_remove(card, file);
  76                 snd_card_unref(card);
  77                 return -EFAULT;
  78         }
  79         return 0;
  80 }
  81
  82 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  83 {
  84         struct snd_mixer_oss_file *fmixer;
  85
  86         if (file->private_data) {
  87                 fmixer = file->private_data;
  88                 module_put(fmixer->card->module);
  89                 snd_card_file_remove(fmixer->card, file);
  90                 kfree(fmixer);
  91         }
  92         return 0;
  93 }
  94
  95 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  96                               mixer_info __user *_info)
  97 {
  98         struct snd_card *card = fmixer->card;
  99         struct snd_mixer_oss *mixer = fmixer->mixer;
 100         struct mixer_info info;
 101
 102         memset(&info, 0, sizeof(info));
 103         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 104         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 105         info.modify_counter = card->mixer_oss_change_count;
 106         if (copy_to_user(_info, &info, sizeof(info)))
 107                 return -EFAULT;
 108         return 0;
 109 }
 110
 111 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 112                                        _old_mixer_info __user *_info)
 113 {
 114         struct snd_card *card = fmixer->card;
 115         struct snd_mixer_oss *mixer = fmixer->mixer;
 116         _old_mixer_info info;
 117
 118         memset(&info, 0, sizeof(info));
 119         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 120         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 121         if (copy_to_user(_info, &info, sizeof(info)))
 122                 return -EFAULT;
 123         return 0;
 124 }
 125
 126 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 127 {
 128         struct snd_mixer_oss *mixer = fmixer->mixer;
 129         int result = 0;
 130
 131         if (mixer == NULL)
 132                 return -EIO;
 133         if (mixer->get_recsrc && mixer->put_recsrc)
 134                 result |= SOUND_CAP_EXCL_INPUT;
 135         return result;
 136 }
 137
 138 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 139 {
 140         struct snd_mixer_oss *mixer = fmixer->mixer;
 141         struct snd_mixer_oss_slot *pslot;
 142         int result = 0, chn;
 143
 144         if (mixer == NULL)
 145                 return -EIO;
 146         for (chn = 0; chn < 31; chn++) {
 147                 pslot = &mixer->slots[chn];
 148                 if (pslot->put_volume || pslot->put_recsrc)
 149                         result |= 1 << chn;
 150         }
 151         return result;
 152 }
 153
 154 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 155 {
 156         struct snd_mixer_oss *mixer = fmixer->mixer;
 157         struct snd_mixer_oss_slot *pslot;
 158         int result = 0, chn;
 159
 160         if (mixer == NULL)
 161                 return -EIO;
 162         for (chn = 0; chn < 31; chn++) {
 163                 pslot = &mixer->slots[chn];
 164                 if (pslot->put_volume && pslot->stereo)
 165                         result |= 1 << chn;
 166         }
 167         return result;
 168 }
 169
 170 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 171 {
 172         struct snd_mixer_oss *mixer = fmixer->mixer;
 173         int result = 0;
 174
 175         if (mixer == NULL)
 176                 return -EIO;
 177         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 178                 result = mixer->mask_recsrc;
 179         } else {
 180                 struct snd_mixer_oss_slot *pslot;
 181                 int chn;
 182                 for (chn = 0; chn < 31; chn++) {
 183                         pslot = &mixer->slots[chn];
 184                         if (pslot->put_recsrc)
 185                                 result |= 1 << chn;
 186                 }
 187         }
 188         return result;
 189 }
 190
 191 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 192 {
 193         struct snd_mixer_oss *mixer = fmixer->mixer;
 194         int result = 0;
 195
 196         if (mixer == NULL)
 197                 return -EIO;
 198         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 199                 int err;
 200                 unsigned int index;
 201                 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
 202                         return err;
 203                 result = 1 << index;
 204         } else {
 205                 struct snd_mixer_oss_slot *pslot;
 206                 int chn;
 207                 for (chn = 0; chn < 31; chn++) {
 208                         pslot = &mixer->slots[chn];
 209                         if (pslot->get_recsrc) {
 210                                 int active = 0;
 211                                 pslot->get_recsrc(fmixer, pslot, &active);
 212                                 if (active)
 213                                         result |= 1 << chn;
 214                         }
 215                 }
 216         }
 217         return mixer->oss_recsrc = result;
 218 }
 219
 220 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 221 {
 222         struct snd_mixer_oss *mixer = fmixer->mixer;
 223         struct snd_mixer_oss_slot *pslot;
 224         int chn, active;
 225         unsigned int index;
 226         int result = 0;
 227
 228         if (mixer == NULL)
 229                 return -EIO;
 230         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 231                 if (recsrc & ~mixer->oss_recsrc)
 232                         recsrc &= ~mixer->oss_recsrc;
 233                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 234                 mixer->get_recsrc(fmixer, &index);
 235                 result = 1 << index;
 236         }
 237         for (chn = 0; chn < 31; chn++) {
 238                 pslot = &mixer->slots[chn];
 239                 if (pslot->put_recsrc) {
 240                         active = (recsrc & (1 << chn)) ? 1 : 0;
 241                         pslot->put_recsrc(fmixer, pslot, active);
 242                 }
 243         }
 244         if (! result) {
 245                 for (chn = 0; chn < 31; chn++) {
 246                         pslot = &mixer->slots[chn];
 247                         if (pslot->get_recsrc) {
 248                                 active = 0;
 249                                 pslot->get_recsrc(fmixer, pslot, &active);
 250                                 if (active)
 251                                         result |= 1 << chn;
 252                         }
 253                 }
 254         }
 255         return result;
 256 }
 257
 258 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 259 {
 260         struct snd_mixer_oss *mixer = fmixer->mixer;
 261         struct snd_mixer_oss_slot *pslot;
 262         int result = 0, left, right;
 263
 264         if (mixer == NULL || slot > 30)
 265                 return -EIO;
 266         pslot = &mixer->slots[slot];
 267         left = pslot->volume[0];
 268         right = pslot->volume[1];
 269         if (pslot->get_volume)
 270                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 271         if (!pslot->stereo)
 272                 right = left;
 273         if (snd_BUG_ON(left < 0 || left > 100))
 274                 return -EIO;
 275         if (snd_BUG_ON(right < 0 || right > 100))
 276                 return -EIO;
 277         if (result >= 0) {
 278                 pslot->volume[0] = left;
 279                 pslot->volume[1] = right;
 280                 result = (left & 0xff) | ((right & 0xff) << 8);
 281         }
 282         return result;
 283 }
 284
 285 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 286                                     int slot, int volume)
 287 {
 288         struct snd_mixer_oss *mixer = fmixer->mixer;
 289         struct snd_mixer_oss_slot *pslot;
 290         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 291
 292         if (mixer == NULL || slot > 30)
 293                 return -EIO;
 294         pslot = &mixer->slots[slot];
 295         if (left > 100)
 296                 left = 100;
 297         if (right > 100)
 298                 right = 100;
 299         if (!pslot->stereo)
 300                 right = left;
 301         if (pslot->put_volume)
 302                 result = pslot->put_volume(fmixer, pslot, left, right);
 303         if (result < 0)
 304                 return result;
 305         pslot->volume[0] = left;
 306         pslot->volume[1] = right;
 307         return (left & 0xff) | ((right & 0xff) << 8);
 308 }
 309
 310 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 311 {
 312         void __user *argp = (void __user *)arg;
 313         int __user *p = argp;
 314         int tmp;
 315
 316         if (snd_BUG_ON(!fmixer))
 317                 return -ENXIO;
 318         if (((cmd >> 8) & 0xff) == 'M') {
 319                 switch (cmd) {
 320                 case SOUND_MIXER_INFO:
 321                         return snd_mixer_oss_info(fmixer, argp);
 322                 case SOUND_OLD_MIXER_INFO:
 323                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 324                 case SOUND_MIXER_WRITE_RECSRC:
 325                         if (get_user(tmp, p))
 326                                 return -EFAULT;
 327                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 328                         if (tmp < 0)
 329                                 return tmp;
 330                         return put_user(tmp, p);
 331                 case OSS_GETVERSION:
 332                         return put_user(SNDRV_OSS_VERSION, p);
 333                 case OSS_ALSAEMULVER:
 334                         return put_user(1, p);
 335                 case SOUND_MIXER_READ_DEVMASK:
 336                         tmp = snd_mixer_oss_devmask(fmixer);
 337                         if (tmp < 0)
 338                                 return tmp;
 339                         return put_user(tmp, p);
 340                 case SOUND_MIXER_READ_STEREODEVS:
 341                         tmp = snd_mixer_oss_stereodevs(fmixer);
 342                         if (tmp < 0)
 343                                 return tmp;
 344                         return put_user(tmp, p);
 345                 case SOUND_MIXER_READ_RECMASK:
 346                         tmp = snd_mixer_oss_recmask(fmixer);
 347                         if (tmp < 0)
 348                                 return tmp;
 349                         return put_user(tmp, p);
 350                 case SOUND_MIXER_READ_CAPS:
 351                         tmp = snd_mixer_oss_caps(fmixer);
 352                         if (tmp < 0)
 353                                 return tmp;
 354                         return put_user(tmp, p);
 355                 case SOUND_MIXER_READ_RECSRC:
 356                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 357                         if (tmp < 0)
 358                                 return tmp;
 359                         return put_user(tmp, p);
 360                 }
 361         }
 362         if (cmd & SIOC_IN) {
 363                 if (get_user(tmp, p))
 364                         return -EFAULT;
 365                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 366                 if (tmp < 0)
 367                         return tmp;
 368                 return put_user(tmp, p);
 369         } else if (cmd & SIOC_OUT) {
 370                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 371                 if (tmp < 0)
 372                         return tmp;
 373                 return put_user(tmp, p);
 374         }
 375         return -ENXIO;
 376 }
 377
 378 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 379 {
 380         return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 381 }
 382
 383 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 384 {
 385         struct snd_mixer_oss_file fmixer;
 386
 387         if (snd_BUG_ON(!card))
 388                 return -ENXIO;
 389         if (card->mixer_oss == NULL)
 390                 return -ENXIO;
 391         memset(&fmixer, 0, sizeof(fmixer));
 392         fmixer.card = card;
 393         fmixer.mixer = card->mixer_oss;
 394         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 395 }
 396
 397 #ifdef CONFIG_COMPAT
 398 /* all compatible */
 399 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 400 #else
 401 #define snd_mixer_oss_ioctl_compat      NULL
 402 #endif
 403
 404 /*
 405  *  REGISTRATION PART
 406  */
 407
 408 static const struct file_operations snd_mixer_oss_f_ops =
 409 {
 410         .owner =        THIS_MODULE,
 411         .open =         snd_mixer_oss_open,
 412         .release =      snd_mixer_oss_release,
 413         .llseek =       no_llseek,
 414         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 415         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 416 };
 417
 418 /*
 419  *  utilities
 420  */
 421
 422 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 423 {
 424         long orange = omax - omin, nrange = nmax - nmin;
 425
 426         if (orange == 0)
 427                 return 0;
 428         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 429 }
 430
 431 /* convert from alsa native to oss values (0-100) */
 432 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 433 {
 434         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 435                 return *old;
 436         return snd_mixer_oss_conv(val, min, max, 0, 100);
 437 }
 438
 439 /* convert from oss to alsa native values */
 440 static long snd_mixer_oss_conv2(long val, long min, long max)
 441 {
 442         return snd_mixer_oss_conv(val, 0, 100, min, max);
 443 }
 444
 445 #if 0
 446 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 447 {
 448         struct snd_mixer_oss *mixer = card->mixer_oss;
 449         if (mixer)
 450                 mixer->mask_recsrc |= 1 << slot;
 451 }
 452
 453 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 454 {
 455         struct snd_mixer_oss *mixer = card->mixer_oss;
 456         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 457                 return 1;
 458         return 0;
 459 }
 460 #endif
 461
 462 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 463
 464 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 465 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 466 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 467 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 468 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 469 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 470 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 471 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 472 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 473 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 474 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 475
 476 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 477
 478 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 479 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 480 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 481 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 482 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 483 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 484 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 485 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 486 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 487 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 488 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 489
 490 struct slot {
 491         unsigned int signature;
 492         unsigned int present;
 493         unsigned int channels;
 494         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 495         unsigned int capture_item;
 496         struct snd_mixer_oss_assign_table *assigned;
 497         unsigned int allocated: 1;
 498 };
 499
 500 #define ID_UNKNOWN      ((unsigned int)-1)
 501
 502 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 503 {
 504         struct snd_card *card = mixer->card;
 505         struct snd_ctl_elem_id id;
 506
 507         memset(&id, 0, sizeof(id));
 508         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 509         strlcpy(id.name, name, sizeof(id.name));
 510         id.index = index;
 511         return snd_ctl_find_id(card, &id);
 512 }
 513
 514 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 515                                           struct snd_mixer_oss_slot *pslot,
 516                                           unsigned int numid,
 517                                           int *left, int *right)
 518 {
 519         struct snd_ctl_elem_info *uinfo;
 520         struct snd_ctl_elem_value *uctl;
 521         struct snd_kcontrol *kctl;
 522         struct snd_card *card = fmixer->card;
 523
 524         if (numid == ID_UNKNOWN)
 525                 return;
 526         down_read(&card->controls_rwsem);
 527         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 528                 up_read(&card->controls_rwsem);
 529                 return;
 530         }
 531         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 532         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 533         if (uinfo == NULL || uctl == NULL)
 534                 goto __unalloc;
 535         if (kctl->info(kctl, uinfo))
 536                 goto __unalloc;
 537         if (kctl->get(kctl, uctl))
 538                 goto __unalloc;
 539         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 540             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 541                 goto __unalloc;
 542         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 543         if (uinfo->count > 1)
 544                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 545       __unalloc:
 546         up_read(&card->controls_rwsem);
 547         kfree(uctl);
 548         kfree(uinfo);
 549 }
 550
 551 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 552                                          struct snd_mixer_oss_slot *pslot,
 553                                          unsigned int numid,
 554                                          int *left, int *right,
 555                                          int route)
 556 {
 557         struct snd_ctl_elem_info *uinfo;
 558         struct snd_ctl_elem_value *uctl;
 559         struct snd_kcontrol *kctl;
 560         struct snd_card *card = fmixer->card;
 561
 562         if (numid == ID_UNKNOWN)
 563                 return;
 564         down_read(&card->controls_rwsem);
 565         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 566                 up_read(&card->controls_rwsem);
 567                 return;
 568         }
 569         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 570         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 571         if (uinfo == NULL || uctl == NULL)
 572                 goto __unalloc;
 573         if (kctl->info(kctl, uinfo))
 574                 goto __unalloc;
 575         if (kctl->get(kctl, uctl))
 576                 goto __unalloc;
 577         if (!uctl->value.integer.value[0]) {
 578                 *left = 0;
 579                 if (uinfo->count == 1)
 580                         *right = 0;
 581         }
 582         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 583                 *right = 0;
 584       __unalloc:
 585         up_read(&card->controls_rwsem);
 586         kfree(uctl);
 587         kfree(uinfo);
 588 }
 589
 590 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 591                                      struct snd_mixer_oss_slot *pslot,
 592                                      int *left, int *right)
 593 {
 594         struct slot *slot = pslot->private_data;
 595
 596         *left = *right = 100;
 597         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 598                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 599         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 600                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 601         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 602                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 603         }
 604         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 605                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 606         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 607                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 608         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 609                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 610         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 611                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 612         }
 613         return 0;
 614 }
 615
 616 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 617                                           struct snd_mixer_oss_slot *pslot,
 618                                           unsigned int numid,
 619                                           int left, int right)
 620 {
 621         struct snd_ctl_elem_info *uinfo;
 622         struct snd_ctl_elem_value *uctl;
 623         struct snd_kcontrol *kctl;
 624         struct snd_card *card = fmixer->card;
 625         int res;
 626
 627         if (numid == ID_UNKNOWN)
 628                 return;
 629         down_read(&card->controls_rwsem);
 630         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 631                 up_read(&card->controls_rwsem);
 632                 return;
 633         }
 634         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 635         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 636         if (uinfo == NULL || uctl == NULL)
 637                 goto __unalloc;
 638         if (kctl->info(kctl, uinfo))
 639                 goto __unalloc;
 640         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 641             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 642                 goto __unalloc;
 643         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 644         if (uinfo->count > 1)
 645                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 646         if ((res = kctl->put(kctl, uctl)) < 0)
 647                 goto __unalloc;
 648         if (res > 0)
 649                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 650       __unalloc:
 651         up_read(&card->controls_rwsem);
 652         kfree(uctl);
 653         kfree(uinfo);
 654 }
 655
 656 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 657                                          struct snd_mixer_oss_slot *pslot,
 658                                          unsigned int numid,
 659                                          int left, int right,
 660                                          int route)
 661 {
 662         struct snd_ctl_elem_info *uinfo;
 663         struct snd_ctl_elem_value *uctl;
 664         struct snd_kcontrol *kctl;
 665         struct snd_card *card = fmixer->card;
 666         int res;
 667
 668         if (numid == ID_UNKNOWN)
 669                 return;
 670         down_read(&card->controls_rwsem);
 671         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 672                 up_read(&card->controls_rwsem);
 673                 return;
 674         }
 675         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 676         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 677         if (uinfo == NULL || uctl == NULL)
 678                 goto __unalloc;
 679         if (kctl->info(kctl, uinfo))
 680                 goto __unalloc;
 681         if (uinfo->count > 1) {
 682                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 683                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 684                 if (route) {
 685                         uctl->value.integer.value[1] =
 686                         uctl->value.integer.value[2] = 0;
 687                 }
 688         } else {
 689                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 690         }
 691         if ((res = kctl->put(kctl, uctl)) < 0)
 692                 goto __unalloc;
 693         if (res > 0)
 694                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 695       __unalloc:
 696         up_read(&card->controls_rwsem);
 697         kfree(uctl);
 698         kfree(uinfo);
 699 }
 700
 701 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 702                                      struct snd_mixer_oss_slot *pslot,
 703                                      int left, int right)
 704 {
 705         struct slot *slot = pslot->private_data;
 706
 707         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 708                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 709                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 710                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 711         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 712                 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 713                         slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 714         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 715                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 716         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 717                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 718         }
 719         if (left || right) {
 720                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 721                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 722                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
 723                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 724                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 725                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 726                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 727                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 728                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
 729                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 730                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 731                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 732         } else {
 733                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 734                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 735                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 736                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 737                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 738                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 739                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 740                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 741                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 742                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 743                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 744                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 745                 }
 746         }
 747         return 0;
 748 }
 749
 750 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 751                                         struct snd_mixer_oss_slot *pslot,
 752                                         int *active)
 753 {
 754         struct slot *slot = pslot->private_data;
 755         int left, right;
 756
 757         left = right = 1;
 758         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 759         *active = (left || right) ? 1 : 0;
 760         return 0;
 761 }
 762
 763 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 764                                            struct snd_mixer_oss_slot *pslot,
 765                                            int *active)
 766 {
 767         struct slot *slot = pslot->private_data;
 768         int left, right;
 769
 770         left = right = 1;
 771         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 772         *active = (left || right) ? 1 : 0;
 773         return 0;
 774 }
 775
 776 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 777                                         struct snd_mixer_oss_slot *pslot,
 778                                         int active)
 779 {
 780         struct slot *slot = pslot->private_data;
 781
 782         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 783         return 0;
 784 }
 785
 786 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 787                                            struct snd_mixer_oss_slot *pslot,
 788                                            int active)
 789 {
 790         struct slot *slot = pslot->private_data;
 791
 792         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 793         return 0;
 794 }
 795
 796 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 797 {
 798         struct snd_card *card = fmixer->card;
 799         struct snd_mixer_oss *mixer = fmixer->mixer;
 800         struct snd_kcontrol *kctl;
 801         struct snd_mixer_oss_slot *pslot;
 802         struct slot *slot;
 803         struct snd_ctl_elem_info *uinfo;
 804         struct snd_ctl_elem_value *uctl;
 805         int err, idx;
 806
 807         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 808         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 809         if (uinfo == NULL || uctl == NULL) {
 810                 err = -ENOMEM;
 811                 goto __free_only;
 812         }
 813         down_read(&card->controls_rwsem);
 814         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 815         if (! kctl) {
 816                 err = -ENOENT;
 817                 goto __unlock;
 818         }
 819         if ((err = kctl->info(kctl, uinfo)) < 0)
 820                 goto __unlock;
 821         if ((err = kctl->get(kctl, uctl)) < 0)
 822                 goto __unlock;
 823         for (idx = 0; idx < 32; idx++) {
 824                 if (!(mixer->mask_recsrc & (1 << idx)))
 825                         continue;
 826                 pslot = &mixer->slots[idx];
 827                 slot = pslot->private_data;
 828                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 829                         continue;
 830                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 831                         continue;
 832                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 833                         *active_index = idx;
 834                         break;
 835                 }
 836         }
 837         err = 0;
 838       __unlock:
 839         up_read(&card->controls_rwsem);
 840       __free_only:
 841         kfree(uctl);
 842         kfree(uinfo);
 843         return err;
 844 }
 845
 846 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 847 {
 848         struct snd_card *card = fmixer->card;
 849         struct snd_mixer_oss *mixer = fmixer->mixer;
 850         struct snd_kcontrol *kctl;
 851         struct snd_mixer_oss_slot *pslot;
 852         struct slot *slot = NULL;
 853         struct snd_ctl_elem_info *uinfo;
 854         struct snd_ctl_elem_value *uctl;
 855         int err;
 856         unsigned int idx;
 857
 858         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 859         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 860         if (uinfo == NULL || uctl == NULL) {
 861                 err = -ENOMEM;
 862                 goto __free_only;
 863         }
 864         down_read(&card->controls_rwsem);
 865         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 866         if (! kctl) {
 867                 err = -ENOENT;
 868                 goto __unlock;
 869         }
 870         if ((err = kctl->info(kctl, uinfo)) < 0)
 871                 goto __unlock;
 872         for (idx = 0; idx < 32; idx++) {
 873                 if (!(mixer->mask_recsrc & (1 << idx)))
 874                         continue;
 875                 pslot = &mixer->slots[idx];
 876                 slot = pslot->private_data;
 877                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 878                         continue;
 879                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 880                         continue;
 881                 if (idx == active_index)
 882                         break;
 883                 slot = NULL;
 884         }
 885         if (! slot)
 886                 goto __unlock;
 887         for (idx = 0; idx < uinfo->count; idx++)
 888                 uctl->value.enumerated.item[idx] = slot->capture_item;
 889         err = kctl->put(kctl, uctl);
 890         if (err > 0)
 891                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 892         err = 0;
 893       __unlock:
 894         up_read(&card->controls_rwsem);
 895       __free_only:
 896         kfree(uctl);
 897         kfree(uinfo);
 898         return err;
 899 }
 900
 901 struct snd_mixer_oss_assign_table {
 902         int oss_id;
 903         const char *name;
 904         int index;
 905 };
 906
 907 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 908 {
 909         struct snd_ctl_elem_info *info;
 910         struct snd_kcontrol *kcontrol;
 911         struct snd_card *card = mixer->card;
 912         int err;
 913
 914         down_read(&card->controls_rwsem);
 915         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 916         if (kcontrol == NULL) {
 917                 up_read(&card->controls_rwsem);
 918                 return 0;
 919         }
 920         info = kmalloc(sizeof(*info), GFP_KERNEL);
 921         if (! info) {
 922                 up_read(&card->controls_rwsem);
 923                 return -ENOMEM;
 924         }
 925         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 926                 up_read(&card->controls_rwsem);
 927                 kfree(info);
 928                 return err;
 929         }
 930         slot->numid[item] = kcontrol->id.numid;
 931         up_read(&card->controls_rwsem);
 932         if (info->count > slot->channels)
 933                 slot->channels = info->count;
 934         slot->present |= 1 << item;
 935         kfree(info);
 936         return 0;
 937 }
 938
 939 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 940 {
 941         struct slot *p = chn->private_data;
 942         if (p) {
 943                 if (p->allocated && p->assigned) {
 944                         kfree(p->assigned->name);
 945                         kfree(p->assigned);
 946                 }
 947                 kfree(p);
 948         }
 949 }
 950
 951 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 952 {
 953         int idx = rslot->number; /* remember this */
 954         if (rslot->private_free)
 955                 rslot->private_free(rslot);
 956         memset(rslot, 0, sizeof(*rslot));
 957         rslot->number = idx;
 958 }
 959
 960 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 961    snd_mixer_oss_build_input! */
 962 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 963                                         struct snd_mixer_oss_assign_table *ptr,
 964                                         struct slot *slot)
 965 {
 966         char str[64];
 967         int err;
 968
 969         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 970                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 971         if (err)
 972                 return err;
 973         sprintf(str, "%s Switch", ptr->name);
 974         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 975                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 976         if (err)
 977                 return err;
 978         sprintf(str, "%s Route", ptr->name);
 979         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 980                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 981         if (err)
 982                 return err;
 983         sprintf(str, "%s Volume", ptr->name);
 984         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 985                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 986         if (err)
 987                 return err;
 988         sprintf(str, "%s Playback Switch", ptr->name);
 989         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 990                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 991         if (err)
 992                 return err;
 993         sprintf(str, "%s Playback Route", ptr->name);
 994         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 995                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
 996         if (err)
 997                 return err;
 998         sprintf(str, "%s Playback Volume", ptr->name);
 999         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1000                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
1001         if (err)
1002                 return err;
1003         sprintf(str, "%s Capture Switch", ptr->name);
1004         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1005                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
1006         if (err)
1007                 return err;
1008         sprintf(str, "%s Capture Route", ptr->name);
1009         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1010                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
1011         if (err)
1012                 return err;
1013         sprintf(str, "%s Capture Volume", ptr->name);
1014         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1015                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
1016         if (err)
1017                 return err;
1018
1019         return 0;
1020 }
1021
1022 /*
1023  * build an OSS mixer element.
1024  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1025  * when replace_old = 1, the old entry is replaced with the new one.
1026  */
1027 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)
1028 {
1029         struct slot slot;
1030         struct slot *pslot;
1031         struct snd_kcontrol *kctl;
1032         struct snd_mixer_oss_slot *rslot;
1033         char str[64];
1034
1035         /* check if already assigned */
1036         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1037                 return 0;
1038
1039         memset(&slot, 0, sizeof(slot));
1040         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1041         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1042                 return 0;
1043         down_read(&mixer->card->controls_rwsem);
1044         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1045                 struct snd_ctl_elem_info *uinfo;
1046
1047                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1048                 if (! uinfo) {
1049                         up_read(&mixer->card->controls_rwsem);
1050                         return -ENOMEM;
1051                 }
1052
1053                 if (kctl->info(kctl, uinfo)) {
1054                         up_read(&mixer->card->controls_rwsem);
1055                         kfree(uinfo);
1056                         return 0;
1057                 }
1058                 strcpy(str, ptr->name);
1059                 if (!strcmp(str, "Master"))
1060                         strcpy(str, "Mix");
1061                 if (!strcmp(str, "Master Mono"))
1062                         strcpy(str, "Mix Mono");
1063                 slot.capture_item = 0;
1064                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1065                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1066                 } else {
1067                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1068                                 uinfo->value.enumerated.item = slot.capture_item;
1069                                 if (kctl->info(kctl, uinfo)) {
1070                                         up_read(&mixer->card->controls_rwsem);
1071                                         kfree(uinfo);
1072                                         return 0;
1073                                 }
1074                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1075                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1076                                         break;
1077                                 }
1078                         }
1079                 }
1080                 kfree(uinfo);
1081         }
1082         up_read(&mixer->card->controls_rwsem);
1083         if (slot.present != 0) {
1084                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1085                 if (! pslot)
1086                         return -ENOMEM;
1087                 *pslot = slot;
1088                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1089                 pslot->assigned = ptr;
1090                 pslot->allocated = ptr_allocated;
1091                 rslot = &mixer->slots[ptr->oss_id];
1092                 mixer_slot_clear(rslot);
1093                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1094                 rslot->get_volume = snd_mixer_oss_get_volume1;
1095                 rslot->put_volume = snd_mixer_oss_put_volume1;
1096                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1097                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1098                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1099                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1100                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1101                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1102                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1103                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1104                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1105                 }
1106                 rslot->private_data = pslot;
1107                 rslot->private_free = snd_mixer_oss_slot_free;
1108                 return 1;
1109         }
1110         return 0;
1111 }
1112
1113 #ifdef CONFIG_PROC_FS
1114 /*
1115  */
1116 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1117 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1118         MIXER_VOL(VOLUME),
1119         MIXER_VOL(BASS),
1120         MIXER_VOL(TREBLE),
1121         MIXER_VOL(SYNTH),
1122         MIXER_VOL(PCM),
1123         MIXER_VOL(SPEAKER),
1124         MIXER_VOL(LINE),
1125         MIXER_VOL(MIC),
1126         MIXER_VOL(CD),
1127         MIXER_VOL(IMIX),
1128         MIXER_VOL(ALTPCM),
1129         MIXER_VOL(RECLEV),
1130         MIXER_VOL(IGAIN),
1131         MIXER_VOL(OGAIN),
1132         MIXER_VOL(LINE1),
1133         MIXER_VOL(LINE2),
1134         MIXER_VOL(LINE3),
1135         MIXER_VOL(DIGITAL1),
1136         MIXER_VOL(DIGITAL2),
1137         MIXER_VOL(DIGITAL3),
1138         MIXER_VOL(PHONEIN),
1139         MIXER_VOL(PHONEOUT),
1140         MIXER_VOL(VIDEO),
1141         MIXER_VOL(RADIO),
1142         MIXER_VOL(MONITOR),
1143 };
1144
1145 /*
1146  *  /proc interface
1147  */
1148
1149 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1150                                     struct snd_info_buffer *buffer)
1151 {
1152         struct snd_mixer_oss *mixer = entry->private_data;
1153         int i;
1154
1155         mutex_lock(&mixer->reg_mutex);
1156         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1157                 struct slot *p;
1158
1159                 if (! oss_mixer_names[i])
1160                         continue;
1161                 p = (struct slot *)mixer->slots[i].private_data;
1162                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1163                 if (p && p->assigned)
1164                         snd_iprintf(buffer, "\"%s\" %d\n",
1165                                     p->assigned->name,
1166                                     p->assigned->index);
1167                 else
1168                         snd_iprintf(buffer, "\"\" 0\n");
1169         }
1170         mutex_unlock(&mixer->reg_mutex);
1171 }
1172
1173 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1174                                      struct snd_info_buffer *buffer)
1175 {
1176         struct snd_mixer_oss *mixer = entry->private_data;
1177         char line[128], str[32], idxstr[16];
1178         const char *cptr;
1179         int ch, idx;
1180         struct snd_mixer_oss_assign_table *tbl;
1181         struct slot *slot;
1182
1183         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1184                 cptr = snd_info_get_str(str, line, sizeof(str));
1185                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1186                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1187                                 break;
1188                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1189                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1190                         continue;
1191                 }
1192                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1193                 if (! *str) {
1194                         /* remove the entry */
1195                         mutex_lock(&mixer->reg_mutex);
1196                         mixer_slot_clear(&mixer->slots[ch]);
1197                         mutex_unlock(&mixer->reg_mutex);
1198                         continue;
1199                 }
1200                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1201                 idx = simple_strtoul(idxstr, NULL, 10);
1202                 if (idx >= 0x4000) { /* too big */
1203                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1204                         continue;
1205                 }
1206                 mutex_lock(&mixer->reg_mutex);
1207                 slot = (struct slot *)mixer->slots[ch].private_data;
1208                 if (slot && slot->assigned &&
1209                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1210                         /* not changed */
1211                         goto __unlock;
1212                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1213                 if (! tbl) {
1214                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1215                         goto __unlock;
1216                 }
1217                 tbl->oss_id = ch;
1218                 tbl->name = kstrdup(str, GFP_KERNEL);
1219                 if (! tbl->name) {
1220                         kfree(tbl);
1221                         goto __unlock;
1222                 }
1223                 tbl->index = idx;
1224                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1225                         kfree(tbl->name);
1226                         kfree(tbl);
1227                 }
1228         __unlock:
1229                 mutex_unlock(&mixer->reg_mutex);
1230         }
1231 }
1232
1233 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1234 {
1235         struct snd_info_entry *entry;
1236
1237         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1238                                            mixer->card->proc_root);
1239         if (! entry)
1240                 return;
1241         entry->content = SNDRV_INFO_CONTENT_TEXT;
1242         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1243         entry->c.text.read = snd_mixer_oss_proc_read;
1244         entry->c.text.write = snd_mixer_oss_proc_write;
1245         entry->private_data = mixer;
1246         if (snd_info_register(entry) < 0) {
1247                 snd_info_free_entry(entry);
1248                 entry = NULL;
1249         }
1250         mixer->proc_entry = entry;
1251 }
1252
1253 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1254 {
1255         snd_info_free_entry(mixer->proc_entry);
1256         mixer->proc_entry = NULL;
1257 }
1258 #else /* !CONFIG_PROC_FS */
1259 #define snd_mixer_oss_proc_init(mix)
1260 #define snd_mixer_oss_proc_done(mix)
1261 #endif /* CONFIG_PROC_FS */
1262
1263 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1264 {
1265         static struct snd_mixer_oss_assign_table table[] = {
1266                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1267                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1268                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1269                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1270                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1271                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1272                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1273                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1274                 { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1275                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1276                 { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1277                 { SOUND_MIXER_LINE,     "Line",                 0 },
1278                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1279                 { SOUND_MIXER_CD,       "CD",                   0 },
1280                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1281                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1282                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1283                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1284                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1285                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1286                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1287                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1288                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1289                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1290                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1291                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1292                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1293                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1294                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1295                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1296                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1297                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1298                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1299                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1300                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1301                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1302                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1303                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1304         };
1305         unsigned int idx;
1306
1307         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1308                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1309         if (mixer->mask_recsrc) {
1310                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1311                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1312         }
1313 }
1314
1315 /*
1316  *
1317  */
1318
1319 static int snd_mixer_oss_free1(void *private)
1320 {
1321         struct snd_mixer_oss *mixer = private;
1322         struct snd_card *card;
1323         int idx;
1324
1325         if (!mixer)
1326                 return 0;
1327         card = mixer->card;
1328         if (snd_BUG_ON(mixer != card->mixer_oss))
1329                 return -ENXIO;
1330         card->mixer_oss = NULL;
1331         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1332                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1333                 if (chn->private_free)
1334                         chn->private_free(chn);
1335         }
1336         kfree(mixer);
1337         return 0;
1338 }
1339
1340 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1341 {
1342         struct snd_mixer_oss *mixer;
1343
1344         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1345                 char name[128];
1346                 int idx, err;
1347
1348                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1349                 if (mixer == NULL)
1350                         return -ENOMEM;
1351                 mutex_init(&mixer->reg_mutex);
1352                 sprintf(name, "mixer%i%i", card->number, 0);
1353                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1354                                                    card, 0,
1355                                                    &snd_mixer_oss_f_ops, card,
1356                                                    name)) < 0) {
1357                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1358                                    card->number, 0);
1359                         kfree(mixer);
1360                         return err;
1361                 }
1362                 mixer->oss_dev_alloc = 1;
1363                 mixer->card = card;
1364                 if (*card->mixername)
1365                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1366                 else
1367                         strlcpy(mixer->name, name, sizeof(mixer->name));
1368 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1369                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1370                                       card->number,
1371                                       mixer->name);
1372 #endif
1373                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1374                         mixer->slots[idx].number = idx;
1375                 card->mixer_oss = mixer;
1376                 snd_mixer_oss_build(mixer);
1377                 snd_mixer_oss_proc_init(mixer);
1378         } else {
1379                 mixer = card->mixer_oss;
1380                 if (mixer == NULL)
1381                         return 0;
1382                 if (mixer->oss_dev_alloc) {
1383 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1384                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1385 #endif
1386                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1387                         mixer->oss_dev_alloc = 0;
1388                 }
1389                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1390                         return 0;
1391                 snd_mixer_oss_proc_done(mixer);
1392                 return snd_mixer_oss_free1(mixer);
1393         }
1394         return 0;
1395 }
1396
1397 static int __init alsa_mixer_oss_init(void)
1398 {
1399         int idx;
1400
1401         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1402         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1403                 if (snd_cards[idx])
1404                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1405         }
1406         return 0;
1407 }
1408
1409 static void __exit alsa_mixer_oss_exit(void)
1410 {
1411         int idx;
1412
1413         snd_mixer_oss_notify_callback = NULL;
1414         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1415                 if (snd_cards[idx])
1416                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1417         }
1418 }
1419
1420 module_init(alsa_mixer_oss_init)
1421 module_exit(alsa_mixer_oss_exit)
1422
1423 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);