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 <linux/compat.h>
  28 #include <sound/core.h>
  29 #include <sound/minors.h>
  30 #include <sound/control.h>
  31 #include <sound/info.h>
  32 #include <sound/mixer_oss.h>
  33 #include <linux/soundcard.h>
  34
  35 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  36
  37 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  38 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  39 MODULE_LICENSE("GPL");
  40 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  41
  42 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  43 {
  44         struct snd_card *card;
  45         struct snd_mixer_oss_file *fmixer;
  46         int err;
  47
  48         err = nonseekable_open(inode, file);
  49         if (err < 0)
  50                 return err;
  51
  52         card = snd_lookup_oss_minor_data(iminor(inode),
  53                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
  54         if (card == NULL)
  55                 return -ENODEV;
  56         if (card->mixer_oss == NULL) {
  57                 snd_card_unref(card);
  58                 return -ENODEV;
  59         }
  60         err = snd_card_file_add(card, file);
  61         if (err < 0) {
  62                 snd_card_unref(card);
  63                 return err;
  64         }
  65         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  66         if (fmixer == NULL) {
  67                 snd_card_file_remove(card, file);
  68                 snd_card_unref(card);
  69                 return -ENOMEM;
  70         }
  71         fmixer->card = card;
  72         fmixer->mixer = card->mixer_oss;
  73         file->private_data = fmixer;
  74         if (!try_module_get(card->module)) {
  75                 kfree(fmixer);
  76                 snd_card_file_remove(card, file);
  77                 snd_card_unref(card);
  78                 return -EFAULT;
  79         }
  80         snd_card_unref(card);
  81         return 0;
  82 }
  83
  84 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  85 {
  86         struct snd_mixer_oss_file *fmixer;
  87
  88         if (file->private_data) {
  89                 fmixer = file->private_data;
  90                 module_put(fmixer->card->module);
  91                 snd_card_file_remove(fmixer->card, file);
  92                 kfree(fmixer);
  93         }
  94         return 0;
  95 }
  96
  97 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  98                               mixer_info __user *_info)
  99 {
 100         struct snd_card *card = fmixer->card;
 101         struct snd_mixer_oss *mixer = fmixer->mixer;
 102         struct mixer_info info;
 103
 104         memset(&info, 0, sizeof(info));
 105         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 106         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 107         info.modify_counter = card->mixer_oss_change_count;
 108         if (copy_to_user(_info, &info, sizeof(info)))
 109                 return -EFAULT;
 110         return 0;
 111 }
 112
 113 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 114                                        _old_mixer_info __user *_info)
 115 {
 116         struct snd_card *card = fmixer->card;
 117         struct snd_mixer_oss *mixer = fmixer->mixer;
 118         _old_mixer_info info;
 119
 120         memset(&info, 0, sizeof(info));
 121         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 122         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 123         if (copy_to_user(_info, &info, sizeof(info)))
 124                 return -EFAULT;
 125         return 0;
 126 }
 127
 128 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 129 {
 130         struct snd_mixer_oss *mixer = fmixer->mixer;
 131         int result = 0;
 132
 133         if (mixer == NULL)
 134                 return -EIO;
 135         if (mixer->get_recsrc && mixer->put_recsrc)
 136                 result |= SOUND_CAP_EXCL_INPUT;
 137         return result;
 138 }
 139
 140 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 141 {
 142         struct snd_mixer_oss *mixer = fmixer->mixer;
 143         struct snd_mixer_oss_slot *pslot;
 144         int result = 0, chn;
 145
 146         if (mixer == NULL)
 147                 return -EIO;
 148         for (chn = 0; chn < 31; chn++) {
 149                 pslot = &mixer->slots[chn];
 150                 if (pslot->put_volume || pslot->put_recsrc)
 151                         result |= 1 << chn;
 152         }
 153         return result;
 154 }
 155
 156 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 157 {
 158         struct snd_mixer_oss *mixer = fmixer->mixer;
 159         struct snd_mixer_oss_slot *pslot;
 160         int result = 0, chn;
 161
 162         if (mixer == NULL)
 163                 return -EIO;
 164         for (chn = 0; chn < 31; chn++) {
 165                 pslot = &mixer->slots[chn];
 166                 if (pslot->put_volume && pslot->stereo)
 167                         result |= 1 << chn;
 168         }
 169         return result;
 170 }
 171
 172 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 173 {
 174         struct snd_mixer_oss *mixer = fmixer->mixer;
 175         int result = 0;
 176
 177         if (mixer == NULL)
 178                 return -EIO;
 179         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 180                 result = mixer->mask_recsrc;
 181         } else {
 182                 struct snd_mixer_oss_slot *pslot;
 183                 int chn;
 184                 for (chn = 0; chn < 31; chn++) {
 185                         pslot = &mixer->slots[chn];
 186                         if (pslot->put_recsrc)
 187                                 result |= 1 << chn;
 188                 }
 189         }
 190         return result;
 191 }
 192
 193 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 194 {
 195         struct snd_mixer_oss *mixer = fmixer->mixer;
 196         int result = 0;
 197
 198         if (mixer == NULL)
 199                 return -EIO;
 200         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 201                 int err;
 202                 unsigned int index;
 203                 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
 204                         return err;
 205                 result = 1 << index;
 206         } else {
 207                 struct snd_mixer_oss_slot *pslot;
 208                 int chn;
 209                 for (chn = 0; chn < 31; chn++) {
 210                         pslot = &mixer->slots[chn];
 211                         if (pslot->get_recsrc) {
 212                                 int active = 0;
 213                                 pslot->get_recsrc(fmixer, pslot, &active);
 214                                 if (active)
 215                                         result |= 1 << chn;
 216                         }
 217                 }
 218         }
 219         return mixer->oss_recsrc = result;
 220 }
 221
 222 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 223 {
 224         struct snd_mixer_oss *mixer = fmixer->mixer;
 225         struct snd_mixer_oss_slot *pslot;
 226         int chn, active;
 227         unsigned int index;
 228         int result = 0;
 229
 230         if (mixer == NULL)
 231                 return -EIO;
 232         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 233                 if (recsrc & ~mixer->oss_recsrc)
 234                         recsrc &= ~mixer->oss_recsrc;
 235                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 236                 mixer->get_recsrc(fmixer, &index);
 237                 result = 1 << index;
 238         }
 239         for (chn = 0; chn < 31; chn++) {
 240                 pslot = &mixer->slots[chn];
 241                 if (pslot->put_recsrc) {
 242                         active = (recsrc & (1 << chn)) ? 1 : 0;
 243                         pslot->put_recsrc(fmixer, pslot, active);
 244                 }
 245         }
 246         if (! result) {
 247                 for (chn = 0; chn < 31; chn++) {
 248                         pslot = &mixer->slots[chn];
 249                         if (pslot->get_recsrc) {
 250                                 active = 0;
 251                                 pslot->get_recsrc(fmixer, pslot, &active);
 252                                 if (active)
 253                                         result |= 1 << chn;
 254                         }
 255                 }
 256         }
 257         return result;
 258 }
 259
 260 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 261 {
 262         struct snd_mixer_oss *mixer = fmixer->mixer;
 263         struct snd_mixer_oss_slot *pslot;
 264         int result = 0, left, right;
 265
 266         if (mixer == NULL || slot > 30)
 267                 return -EIO;
 268         pslot = &mixer->slots[slot];
 269         left = pslot->volume[0];
 270         right = pslot->volume[1];
 271         if (pslot->get_volume)
 272                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 273         if (!pslot->stereo)
 274                 right = left;
 275         if (snd_BUG_ON(left < 0 || left > 100))
 276                 return -EIO;
 277         if (snd_BUG_ON(right < 0 || right > 100))
 278                 return -EIO;
 279         if (result >= 0) {
 280                 pslot->volume[0] = left;
 281                 pslot->volume[1] = right;
 282                 result = (left & 0xff) | ((right & 0xff) << 8);
 283         }
 284         return result;
 285 }
 286
 287 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 288                                     int slot, int volume)
 289 {
 290         struct snd_mixer_oss *mixer = fmixer->mixer;
 291         struct snd_mixer_oss_slot *pslot;
 292         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 293
 294         if (mixer == NULL || slot > 30)
 295                 return -EIO;
 296         pslot = &mixer->slots[slot];
 297         if (left > 100)
 298                 left = 100;
 299         if (right > 100)
 300                 right = 100;
 301         if (!pslot->stereo)
 302                 right = left;
 303         if (pslot->put_volume)
 304                 result = pslot->put_volume(fmixer, pslot, left, right);
 305         if (result < 0)
 306                 return result;
 307         pslot->volume[0] = left;
 308         pslot->volume[1] = right;
 309         return (left & 0xff) | ((right & 0xff) << 8);
 310 }
 311
 312 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 313 {
 314         void __user *argp = (void __user *)arg;
 315         int __user *p = argp;
 316         int tmp;
 317
 318         if (snd_BUG_ON(!fmixer))
 319                 return -ENXIO;
 320         if (((cmd >> 8) & 0xff) == 'M') {
 321                 switch (cmd) {
 322                 case SOUND_MIXER_INFO:
 323                         return snd_mixer_oss_info(fmixer, argp);
 324                 case SOUND_OLD_MIXER_INFO:
 325                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 326                 case SOUND_MIXER_WRITE_RECSRC:
 327                         if (get_user(tmp, p))
 328                                 return -EFAULT;
 329                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 330                         if (tmp < 0)
 331                                 return tmp;
 332                         return put_user(tmp, p);
 333                 case OSS_GETVERSION:
 334                         return put_user(SNDRV_OSS_VERSION, p);
 335                 case OSS_ALSAEMULVER:
 336                         return put_user(1, p);
 337                 case SOUND_MIXER_READ_DEVMASK:
 338                         tmp = snd_mixer_oss_devmask(fmixer);
 339                         if (tmp < 0)
 340                                 return tmp;
 341                         return put_user(tmp, p);
 342                 case SOUND_MIXER_READ_STEREODEVS:
 343                         tmp = snd_mixer_oss_stereodevs(fmixer);
 344                         if (tmp < 0)
 345                                 return tmp;
 346                         return put_user(tmp, p);
 347                 case SOUND_MIXER_READ_RECMASK:
 348                         tmp = snd_mixer_oss_recmask(fmixer);
 349                         if (tmp < 0)
 350                                 return tmp;
 351                         return put_user(tmp, p);
 352                 case SOUND_MIXER_READ_CAPS:
 353                         tmp = snd_mixer_oss_caps(fmixer);
 354                         if (tmp < 0)
 355                                 return tmp;
 356                         return put_user(tmp, p);
 357                 case SOUND_MIXER_READ_RECSRC:
 358                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 359                         if (tmp < 0)
 360                                 return tmp;
 361                         return put_user(tmp, p);
 362                 }
 363         }
 364         if (cmd & SIOC_IN) {
 365                 if (get_user(tmp, p))
 366                         return -EFAULT;
 367                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 368                 if (tmp < 0)
 369                         return tmp;
 370                 return put_user(tmp, p);
 371         } else if (cmd & SIOC_OUT) {
 372                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 373                 if (tmp < 0)
 374                         return tmp;
 375                 return put_user(tmp, p);
 376         }
 377         return -ENXIO;
 378 }
 379
 380 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 381 {
 382         return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 383 }
 384
 385 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 386 {
 387         struct snd_mixer_oss_file fmixer;
 388
 389         if (snd_BUG_ON(!card))
 390                 return -ENXIO;
 391         if (card->mixer_oss == NULL)
 392                 return -ENXIO;
 393         memset(&fmixer, 0, sizeof(fmixer));
 394         fmixer.card = card;
 395         fmixer.mixer = card->mixer_oss;
 396         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 397 }
 398
 399 #ifdef CONFIG_COMPAT
 400 /* all compatible */
 401 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
 402                                        unsigned long arg)
 403 {
 404         return snd_mixer_oss_ioctl1(file->private_data, cmd,
 405                                     (unsigned long)compat_ptr(arg));
 406 }
 407 #else
 408 #define snd_mixer_oss_ioctl_compat      NULL
 409 #endif
 410
 411 /*
 412  *  REGISTRATION PART
 413  */
 414
 415 static const struct file_operations snd_mixer_oss_f_ops =
 416 {
 417         .owner =        THIS_MODULE,
 418         .open =         snd_mixer_oss_open,
 419         .release =      snd_mixer_oss_release,
 420         .llseek =       no_llseek,
 421         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 422         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 423 };
 424
 425 /*
 426  *  utilities
 427  */
 428
 429 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 430 {
 431         long orange = omax - omin, nrange = nmax - nmin;
 432
 433         if (orange == 0)
 434                 return 0;
 435         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 436 }
 437
 438 /* convert from alsa native to oss values (0-100) */
 439 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 440 {
 441         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 442                 return *old;
 443         return snd_mixer_oss_conv(val, min, max, 0, 100);
 444 }
 445
 446 /* convert from oss to alsa native values */
 447 static long snd_mixer_oss_conv2(long val, long min, long max)
 448 {
 449         return snd_mixer_oss_conv(val, 0, 100, min, max);
 450 }
 451
 452 #if 0
 453 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 454 {
 455         struct snd_mixer_oss *mixer = card->mixer_oss;
 456         if (mixer)
 457                 mixer->mask_recsrc |= 1 << slot;
 458 }
 459
 460 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 461 {
 462         struct snd_mixer_oss *mixer = card->mixer_oss;
 463         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 464                 return 1;
 465         return 0;
 466 }
 467 #endif
 468
 469 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 470
 471 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 472 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 473 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 474 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 475 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 476 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 477 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 478 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 479 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 480 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 481 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 482
 483 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 484
 485 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 486 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 487 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 488 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 489 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 490 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 491 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 492 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 493 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 494 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 495 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 496
 497 struct slot {
 498         unsigned int signature;
 499         unsigned int present;
 500         unsigned int channels;
 501         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 502         unsigned int capture_item;
 503         struct snd_mixer_oss_assign_table *assigned;
 504         unsigned int allocated: 1;
 505 };
 506
 507 #define ID_UNKNOWN      ((unsigned int)-1)
 508
 509 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 510 {
 511         struct snd_card *card = mixer->card;
 512         struct snd_ctl_elem_id id;
 513
 514         memset(&id, 0, sizeof(id));
 515         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 516         strlcpy(id.name, name, sizeof(id.name));
 517         id.index = index;
 518         return snd_ctl_find_id(card, &id);
 519 }
 520
 521 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 522                                           struct snd_mixer_oss_slot *pslot,
 523                                           unsigned int numid,
 524                                           int *left, int *right)
 525 {
 526         struct snd_ctl_elem_info *uinfo;
 527         struct snd_ctl_elem_value *uctl;
 528         struct snd_kcontrol *kctl;
 529         struct snd_card *card = fmixer->card;
 530
 531         if (numid == ID_UNKNOWN)
 532                 return;
 533         down_read(&card->controls_rwsem);
 534         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 535                 up_read(&card->controls_rwsem);
 536                 return;
 537         }
 538         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 539         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 540         if (uinfo == NULL || uctl == NULL)
 541                 goto __unalloc;
 542         if (kctl->info(kctl, uinfo))
 543                 goto __unalloc;
 544         if (kctl->get(kctl, uctl))
 545                 goto __unalloc;
 546         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 547             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 548                 goto __unalloc;
 549         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 550         if (uinfo->count > 1)
 551                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 552       __unalloc:
 553         up_read(&card->controls_rwsem);
 554         kfree(uctl);
 555         kfree(uinfo);
 556 }
 557
 558 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 559                                          struct snd_mixer_oss_slot *pslot,
 560                                          unsigned int numid,
 561                                          int *left, int *right,
 562                                          int route)
 563 {
 564         struct snd_ctl_elem_info *uinfo;
 565         struct snd_ctl_elem_value *uctl;
 566         struct snd_kcontrol *kctl;
 567         struct snd_card *card = fmixer->card;
 568
 569         if (numid == ID_UNKNOWN)
 570                 return;
 571         down_read(&card->controls_rwsem);
 572         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 573                 up_read(&card->controls_rwsem);
 574                 return;
 575         }
 576         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 577         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 578         if (uinfo == NULL || uctl == NULL)
 579                 goto __unalloc;
 580         if (kctl->info(kctl, uinfo))
 581                 goto __unalloc;
 582         if (kctl->get(kctl, uctl))
 583                 goto __unalloc;
 584         if (!uctl->value.integer.value[0]) {
 585                 *left = 0;
 586                 if (uinfo->count == 1)
 587                         *right = 0;
 588         }
 589         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 590                 *right = 0;
 591       __unalloc:
 592         up_read(&card->controls_rwsem);
 593         kfree(uctl);
 594         kfree(uinfo);
 595 }
 596
 597 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 598                                      struct snd_mixer_oss_slot *pslot,
 599                                      int *left, int *right)
 600 {
 601         struct slot *slot = pslot->private_data;
 602
 603         *left = *right = 100;
 604         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 605                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 606         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 607                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 608         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 609                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 610         }
 611         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 612                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 613         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 614                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 615         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 616                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 617         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 618                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 619         }
 620         return 0;
 621 }
 622
 623 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 624                                           struct snd_mixer_oss_slot *pslot,
 625                                           unsigned int numid,
 626                                           int left, int right)
 627 {
 628         struct snd_ctl_elem_info *uinfo;
 629         struct snd_ctl_elem_value *uctl;
 630         struct snd_kcontrol *kctl;
 631         struct snd_card *card = fmixer->card;
 632         int res;
 633
 634         if (numid == ID_UNKNOWN)
 635                 return;
 636         down_read(&card->controls_rwsem);
 637         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 638                 up_read(&card->controls_rwsem);
 639                 return;
 640         }
 641         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 642         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 643         if (uinfo == NULL || uctl == NULL)
 644                 goto __unalloc;
 645         if (kctl->info(kctl, uinfo))
 646                 goto __unalloc;
 647         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 648             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 649                 goto __unalloc;
 650         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 651         if (uinfo->count > 1)
 652                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 653         if ((res = kctl->put(kctl, uctl)) < 0)
 654                 goto __unalloc;
 655         if (res > 0)
 656                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 657       __unalloc:
 658         up_read(&card->controls_rwsem);
 659         kfree(uctl);
 660         kfree(uinfo);
 661 }
 662
 663 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 664                                          struct snd_mixer_oss_slot *pslot,
 665                                          unsigned int numid,
 666                                          int left, int right,
 667                                          int route)
 668 {
 669         struct snd_ctl_elem_info *uinfo;
 670         struct snd_ctl_elem_value *uctl;
 671         struct snd_kcontrol *kctl;
 672         struct snd_card *card = fmixer->card;
 673         int res;
 674
 675         if (numid == ID_UNKNOWN)
 676                 return;
 677         down_read(&card->controls_rwsem);
 678         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 679                 up_read(&card->controls_rwsem);
 680                 return;
 681         }
 682         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 683         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 684         if (uinfo == NULL || uctl == NULL)
 685                 goto __unalloc;
 686         if (kctl->info(kctl, uinfo))
 687                 goto __unalloc;
 688         if (uinfo->count > 1) {
 689                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 690                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 691                 if (route) {
 692                         uctl->value.integer.value[1] =
 693                         uctl->value.integer.value[2] = 0;
 694                 }
 695         } else {
 696                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 697         }
 698         if ((res = kctl->put(kctl, uctl)) < 0)
 699                 goto __unalloc;
 700         if (res > 0)
 701                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 702       __unalloc:
 703         up_read(&card->controls_rwsem);
 704         kfree(uctl);
 705         kfree(uinfo);
 706 }
 707
 708 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 709                                      struct snd_mixer_oss_slot *pslot,
 710                                      int left, int right)
 711 {
 712         struct slot *slot = pslot->private_data;
 713
 714         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 715                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 716                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 717                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 718         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 719                 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 720                         slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 721         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 722                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 723         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 724                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 725         }
 726         if (left || right) {
 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                 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                 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                 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                 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                 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         } else {
 740                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 741                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 742                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 743                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 744                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 745                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 746                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 747                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 748                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 749                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 750                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 751                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 752                 }
 753         }
 754         return 0;
 755 }
 756
 757 static int snd_mixer_oss_get_recsrc1_sw(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_CSWITCH], &left, &right, 0);
 766         *active = (left || right) ? 1 : 0;
 767         return 0;
 768 }
 769
 770 static int snd_mixer_oss_get_recsrc1_route(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         int left, right;
 776
 777         left = right = 1;
 778         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 779         *active = (left || right) ? 1 : 0;
 780         return 0;
 781 }
 782
 783 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 784                                         struct snd_mixer_oss_slot *pslot,
 785                                         int active)
 786 {
 787         struct slot *slot = pslot->private_data;
 788
 789         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 790         return 0;
 791 }
 792
 793 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 794                                            struct snd_mixer_oss_slot *pslot,
 795                                            int active)
 796 {
 797         struct slot *slot = pslot->private_data;
 798
 799         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 800         return 0;
 801 }
 802
 803 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 804 {
 805         struct snd_card *card = fmixer->card;
 806         struct snd_mixer_oss *mixer = fmixer->mixer;
 807         struct snd_kcontrol *kctl;
 808         struct snd_mixer_oss_slot *pslot;
 809         struct slot *slot;
 810         struct snd_ctl_elem_info *uinfo;
 811         struct snd_ctl_elem_value *uctl;
 812         int err, idx;
 813
 814         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 815         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 816         if (uinfo == NULL || uctl == NULL) {
 817                 err = -ENOMEM;
 818                 goto __free_only;
 819         }
 820         down_read(&card->controls_rwsem);
 821         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 822         if (! kctl) {
 823                 err = -ENOENT;
 824                 goto __unlock;
 825         }
 826         if ((err = kctl->info(kctl, uinfo)) < 0)
 827                 goto __unlock;
 828         if ((err = kctl->get(kctl, uctl)) < 0)
 829                 goto __unlock;
 830         for (idx = 0; idx < 32; idx++) {
 831                 if (!(mixer->mask_recsrc & (1 << idx)))
 832                         continue;
 833                 pslot = &mixer->slots[idx];
 834                 slot = pslot->private_data;
 835                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 836                         continue;
 837                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 838                         continue;
 839                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 840                         *active_index = idx;
 841                         break;
 842                 }
 843         }
 844         err = 0;
 845       __unlock:
 846         up_read(&card->controls_rwsem);
 847       __free_only:
 848         kfree(uctl);
 849         kfree(uinfo);
 850         return err;
 851 }
 852
 853 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 854 {
 855         struct snd_card *card = fmixer->card;
 856         struct snd_mixer_oss *mixer = fmixer->mixer;
 857         struct snd_kcontrol *kctl;
 858         struct snd_mixer_oss_slot *pslot;
 859         struct slot *slot = NULL;
 860         struct snd_ctl_elem_info *uinfo;
 861         struct snd_ctl_elem_value *uctl;
 862         int err;
 863         unsigned int idx;
 864
 865         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 866         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 867         if (uinfo == NULL || uctl == NULL) {
 868                 err = -ENOMEM;
 869                 goto __free_only;
 870         }
 871         down_read(&card->controls_rwsem);
 872         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 873         if (! kctl) {
 874                 err = -ENOENT;
 875                 goto __unlock;
 876         }
 877         if ((err = kctl->info(kctl, uinfo)) < 0)
 878                 goto __unlock;
 879         for (idx = 0; idx < 32; idx++) {
 880                 if (!(mixer->mask_recsrc & (1 << idx)))
 881                         continue;
 882                 pslot = &mixer->slots[idx];
 883                 slot = pslot->private_data;
 884                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 885                         continue;
 886                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 887                         continue;
 888                 if (idx == active_index)
 889                         break;
 890                 slot = NULL;
 891         }
 892         if (! slot)
 893                 goto __unlock;
 894         for (idx = 0; idx < uinfo->count; idx++)
 895                 uctl->value.enumerated.item[idx] = slot->capture_item;
 896         err = kctl->put(kctl, uctl);
 897         if (err > 0)
 898                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 899         err = 0;
 900       __unlock:
 901         up_read(&card->controls_rwsem);
 902       __free_only:
 903         kfree(uctl);
 904         kfree(uinfo);
 905         return err;
 906 }
 907
 908 struct snd_mixer_oss_assign_table {
 909         int oss_id;
 910         const char *name;
 911         int index;
 912 };
 913
 914 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 915 {
 916         struct snd_ctl_elem_info *info;
 917         struct snd_kcontrol *kcontrol;
 918         struct snd_card *card = mixer->card;
 919         int err;
 920
 921         down_read(&card->controls_rwsem);
 922         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 923         if (kcontrol == NULL) {
 924                 up_read(&card->controls_rwsem);
 925                 return 0;
 926         }
 927         info = kmalloc(sizeof(*info), GFP_KERNEL);
 928         if (! info) {
 929                 up_read(&card->controls_rwsem);
 930                 return -ENOMEM;
 931         }
 932         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 933                 up_read(&card->controls_rwsem);
 934                 kfree(info);
 935                 return err;
 936         }
 937         slot->numid[item] = kcontrol->id.numid;
 938         up_read(&card->controls_rwsem);
 939         if (info->count > slot->channels)
 940                 slot->channels = info->count;
 941         slot->present |= 1 << item;
 942         kfree(info);
 943         return 0;
 944 }
 945
 946 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 947 {
 948         struct slot *p = chn->private_data;
 949         if (p) {
 950                 if (p->allocated && p->assigned) {
 951                         kfree(p->assigned->name);
 952                         kfree(p->assigned);
 953                 }
 954                 kfree(p);
 955         }
 956 }
 957
 958 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 959 {
 960         int idx = rslot->number; /* remember this */
 961         if (rslot->private_free)
 962                 rslot->private_free(rslot);
 963         memset(rslot, 0, sizeof(*rslot));
 964         rslot->number = idx;
 965 }
 966
 967 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 968    snd_mixer_oss_build_input! */
 969 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 970                                         struct snd_mixer_oss_assign_table *ptr,
 971                                         struct slot *slot)
 972 {
 973         char str[64];
 974         int err;
 975
 976         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 977                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
 978         if (err)
 979                 return err;
 980         sprintf(str, "%s Switch", ptr->name);
 981         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 982                                        SNDRV_MIXER_OSS_ITEM_GSWITCH);
 983         if (err)
 984                 return err;
 985         sprintf(str, "%s Route", ptr->name);
 986         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 987                                        SNDRV_MIXER_OSS_ITEM_GROUTE);
 988         if (err)
 989                 return err;
 990         sprintf(str, "%s Volume", ptr->name);
 991         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 992                                        SNDRV_MIXER_OSS_ITEM_GVOLUME);
 993         if (err)
 994                 return err;
 995         sprintf(str, "%s Playback Switch", ptr->name);
 996         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 997                                        SNDRV_MIXER_OSS_ITEM_PSWITCH);
 998         if (err)
 999                 return err;
1000         sprintf(str, "%s Playback Route", ptr->name);
1001         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1002                                        SNDRV_MIXER_OSS_ITEM_PROUTE);
1003         if (err)
1004                 return err;
1005         sprintf(str, "%s Playback Volume", ptr->name);
1006         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1007                                        SNDRV_MIXER_OSS_ITEM_PVOLUME);
1008         if (err)
1009                 return err;
1010         sprintf(str, "%s Capture Switch", ptr->name);
1011         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1012                                        SNDRV_MIXER_OSS_ITEM_CSWITCH);
1013         if (err)
1014                 return err;
1015         sprintf(str, "%s Capture Route", ptr->name);
1016         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1017                                        SNDRV_MIXER_OSS_ITEM_CROUTE);
1018         if (err)
1019                 return err;
1020         sprintf(str, "%s Capture Volume", ptr->name);
1021         err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1022                                        SNDRV_MIXER_OSS_ITEM_CVOLUME);
1023         if (err)
1024                 return err;
1025
1026         return 0;
1027 }
1028
1029 /*
1030  * build an OSS mixer element.
1031  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1032  * when replace_old = 1, the old entry is replaced with the new one.
1033  */
1034 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)
1035 {
1036         struct slot slot;
1037         struct slot *pslot;
1038         struct snd_kcontrol *kctl;
1039         struct snd_mixer_oss_slot *rslot;
1040         char str[64];
1041
1042         /* check if already assigned */
1043         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1044                 return 0;
1045
1046         memset(&slot, 0, sizeof(slot));
1047         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1048         if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1049                 return 0;
1050         down_read(&mixer->card->controls_rwsem);
1051         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1052                 struct snd_ctl_elem_info *uinfo;
1053
1054                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1055                 if (! uinfo) {
1056                         up_read(&mixer->card->controls_rwsem);
1057                         return -ENOMEM;
1058                 }
1059
1060                 if (kctl->info(kctl, uinfo)) {
1061                         up_read(&mixer->card->controls_rwsem);
1062                         kfree(uinfo);
1063                         return 0;
1064                 }
1065                 strcpy(str, ptr->name);
1066                 if (!strcmp(str, "Master"))
1067                         strcpy(str, "Mix");
1068                 if (!strcmp(str, "Master Mono"))
1069                         strcpy(str, "Mix Mono");
1070                 slot.capture_item = 0;
1071                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1072                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1073                 } else {
1074                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1075                                 uinfo->value.enumerated.item = slot.capture_item;
1076                                 if (kctl->info(kctl, uinfo)) {
1077                                         up_read(&mixer->card->controls_rwsem);
1078                                         kfree(uinfo);
1079                                         return 0;
1080                                 }
1081                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1082                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1083                                         break;
1084                                 }
1085                         }
1086                 }
1087                 kfree(uinfo);
1088         }
1089         up_read(&mixer->card->controls_rwsem);
1090         if (slot.present != 0) {
1091                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1092                 if (! pslot)
1093                         return -ENOMEM;
1094                 *pslot = slot;
1095                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1096                 pslot->assigned = ptr;
1097                 pslot->allocated = ptr_allocated;
1098                 rslot = &mixer->slots[ptr->oss_id];
1099                 mixer_slot_clear(rslot);
1100                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1101                 rslot->get_volume = snd_mixer_oss_get_volume1;
1102                 rslot->put_volume = snd_mixer_oss_put_volume1;
1103                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1104                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1105                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1106                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1107                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1108                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1109                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1110                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1111                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1112                 }
1113                 rslot->private_data = pslot;
1114                 rslot->private_free = snd_mixer_oss_slot_free;
1115                 return 1;
1116         }
1117         return 0;
1118 }
1119
1120 #ifdef CONFIG_SND_PROC_FS
1121 /*
1122  */
1123 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1124 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1125         MIXER_VOL(VOLUME),
1126         MIXER_VOL(BASS),
1127         MIXER_VOL(TREBLE),
1128         MIXER_VOL(SYNTH),
1129         MIXER_VOL(PCM),
1130         MIXER_VOL(SPEAKER),
1131         MIXER_VOL(LINE),
1132         MIXER_VOL(MIC),
1133         MIXER_VOL(CD),
1134         MIXER_VOL(IMIX),
1135         MIXER_VOL(ALTPCM),
1136         MIXER_VOL(RECLEV),
1137         MIXER_VOL(IGAIN),
1138         MIXER_VOL(OGAIN),
1139         MIXER_VOL(LINE1),
1140         MIXER_VOL(LINE2),
1141         MIXER_VOL(LINE3),
1142         MIXER_VOL(DIGITAL1),
1143         MIXER_VOL(DIGITAL2),
1144         MIXER_VOL(DIGITAL3),
1145         MIXER_VOL(PHONEIN),
1146         MIXER_VOL(PHONEOUT),
1147         MIXER_VOL(VIDEO),
1148         MIXER_VOL(RADIO),
1149         MIXER_VOL(MONITOR),
1150 };
1151
1152 /*
1153  *  /proc interface
1154  */
1155
1156 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1157                                     struct snd_info_buffer *buffer)
1158 {
1159         struct snd_mixer_oss *mixer = entry->private_data;
1160         int i;
1161
1162         mutex_lock(&mixer->reg_mutex);
1163         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1164                 struct slot *p;
1165
1166                 if (! oss_mixer_names[i])
1167                         continue;
1168                 p = (struct slot *)mixer->slots[i].private_data;
1169                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1170                 if (p && p->assigned)
1171                         snd_iprintf(buffer, "\"%s\" %d\n",
1172                                     p->assigned->name,
1173                                     p->assigned->index);
1174                 else
1175                         snd_iprintf(buffer, "\"\" 0\n");
1176         }
1177         mutex_unlock(&mixer->reg_mutex);
1178 }
1179
1180 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1181                                      struct snd_info_buffer *buffer)
1182 {
1183         struct snd_mixer_oss *mixer = entry->private_data;
1184         char line[128], str[32], idxstr[16];
1185         const char *cptr;
1186         unsigned int idx;
1187         int ch;
1188         struct snd_mixer_oss_assign_table *tbl;
1189         struct slot *slot;
1190
1191         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1192                 cptr = snd_info_get_str(str, line, sizeof(str));
1193                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1194                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1195                                 break;
1196                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1197                         pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1198                                str);
1199                         continue;
1200                 }
1201                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1202                 if (! *str) {
1203                         /* remove the entry */
1204                         mutex_lock(&mixer->reg_mutex);
1205                         mixer_slot_clear(&mixer->slots[ch]);
1206                         mutex_unlock(&mixer->reg_mutex);
1207                         continue;
1208                 }
1209                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1210                 idx = simple_strtoul(idxstr, NULL, 10);
1211                 if (idx >= 0x4000) { /* too big */
1212                         pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1213                         continue;
1214                 }
1215                 mutex_lock(&mixer->reg_mutex);
1216                 slot = (struct slot *)mixer->slots[ch].private_data;
1217                 if (slot && slot->assigned &&
1218                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1219                         /* not changed */
1220                         goto __unlock;
1221                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1222                 if (!tbl)
1223                         goto __unlock;
1224                 tbl->oss_id = ch;
1225                 tbl->name = kstrdup(str, GFP_KERNEL);
1226                 if (! tbl->name) {
1227                         kfree(tbl);
1228                         goto __unlock;
1229                 }
1230                 tbl->index = idx;
1231                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1232                         kfree(tbl->name);
1233                         kfree(tbl);
1234                 }
1235         __unlock:
1236                 mutex_unlock(&mixer->reg_mutex);
1237         }
1238 }
1239
1240 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1241 {
1242         struct snd_info_entry *entry;
1243
1244         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1245                                            mixer->card->proc_root);
1246         if (! entry)
1247                 return;
1248         entry->content = SNDRV_INFO_CONTENT_TEXT;
1249         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1250         entry->c.text.read = snd_mixer_oss_proc_read;
1251         entry->c.text.write = snd_mixer_oss_proc_write;
1252         entry->private_data = mixer;
1253         if (snd_info_register(entry) < 0) {
1254                 snd_info_free_entry(entry);
1255                 entry = NULL;
1256         }
1257         mixer->proc_entry = entry;
1258 }
1259
1260 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1261 {
1262         snd_info_free_entry(mixer->proc_entry);
1263         mixer->proc_entry = NULL;
1264 }
1265 #else /* !CONFIG_SND_PROC_FS */
1266 #define snd_mixer_oss_proc_init(mix)
1267 #define snd_mixer_oss_proc_done(mix)
1268 #endif /* CONFIG_SND_PROC_FS */
1269
1270 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1271 {
1272         static struct snd_mixer_oss_assign_table table[] = {
1273                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1274                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1275                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1276                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1277                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1278                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1279                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1280                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1281                 { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1282                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1283                 { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1284                 { SOUND_MIXER_LINE,     "Line",                 0 },
1285                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1286                 { SOUND_MIXER_CD,       "CD",                   0 },
1287                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1288                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1289                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1290                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1291                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1292                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1293                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1294                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1295                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1296                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1297                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1298                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1299                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1300                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1301                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1302                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1303                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1304                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1305                 { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1306                 { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1307                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1308                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1309                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1310                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1311         };
1312         unsigned int idx;
1313
1314         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1315                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1316         if (mixer->mask_recsrc) {
1317                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1318                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1319         }
1320 }
1321
1322 /*
1323  *
1324  */
1325
1326 static int snd_mixer_oss_free1(void *private)
1327 {
1328         struct snd_mixer_oss *mixer = private;
1329         struct snd_card *card;
1330         int idx;
1331
1332         if (!mixer)
1333                 return 0;
1334         card = mixer->card;
1335         if (snd_BUG_ON(mixer != card->mixer_oss))
1336                 return -ENXIO;
1337         card->mixer_oss = NULL;
1338         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1339                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1340                 if (chn->private_free)
1341                         chn->private_free(chn);
1342         }
1343         kfree(mixer);
1344         return 0;
1345 }
1346
1347 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1348 {
1349         struct snd_mixer_oss *mixer;
1350
1351         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1352                 int idx, err;
1353
1354                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1355                 if (mixer == NULL)
1356                         return -ENOMEM;
1357                 mutex_init(&mixer->reg_mutex);
1358                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1359                                                    card, 0,
1360                                                    &snd_mixer_oss_f_ops, card)) < 0) {
1361                         dev_err(card->dev,
1362                                 "unable to register OSS mixer device %i:%i\n",
1363                                 card->number, 0);
1364                         kfree(mixer);
1365                         return err;
1366                 }
1367                 mixer->oss_dev_alloc = 1;
1368                 mixer->card = card;
1369                 if (*card->mixername)
1370                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1371                 else
1372                         snprintf(mixer->name, sizeof(mixer->name),
1373                                  "mixer%i", card->number);
1374 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1375                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1376                                       card->number,
1377                                       mixer->name);
1378 #endif
1379                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1380                         mixer->slots[idx].number = idx;
1381                 card->mixer_oss = mixer;
1382                 snd_mixer_oss_build(mixer);
1383                 snd_mixer_oss_proc_init(mixer);
1384         } else {
1385                 mixer = card->mixer_oss;
1386                 if (mixer == NULL)
1387                         return 0;
1388                 if (mixer->oss_dev_alloc) {
1389 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1390                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1391 #endif
1392                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1393                         mixer->oss_dev_alloc = 0;
1394                 }
1395                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1396                         return 0;
1397                 snd_mixer_oss_proc_done(mixer);
1398                 return snd_mixer_oss_free1(mixer);
1399         }
1400         return 0;
1401 }
1402
1403 static int __init alsa_mixer_oss_init(void)
1404 {
1405         int idx;
1406
1407         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1408         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1409                 if (snd_cards[idx])
1410                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1411         }
1412         return 0;
1413 }
1414
1415 static void __exit alsa_mixer_oss_exit(void)
1416 {
1417         int idx;
1418
1419         snd_mixer_oss_notify_callback = NULL;
1420         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1421                 if (snd_cards[idx])
1422                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1423         }
1424 }
1425
1426 module_init(alsa_mixer_oss_init)
1427 module_exit(alsa_mixer_oss_exit)
1428
1429 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);