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