sound/core/oss/mixer_oss.c

   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/smp_lock.h>
  25 #include <linux/slab.h>
  26 #include <linux/time.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@suse.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         int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
  44         snd_card_t *card;
  45         snd_mixer_oss_file_t *fmixer;
  46         int err;
  47
  48         if ((card = snd_cards[cardnum]) == NULL)
  49                 return -ENODEV;
  50         if (card->mixer_oss == NULL)
  51                 return -ENODEV;
  52         err = snd_card_file_add(card, file);
  53         if (err < 0)
  54                 return err;
  55         fmixer = kcalloc(1, sizeof(*fmixer), GFP_KERNEL);
  56         if (fmixer == NULL) {
  57                 snd_card_file_remove(card, file);
  58                 return -ENOMEM;
  59         }
  60         fmixer->card = card;
  61         fmixer->mixer = card->mixer_oss;
  62         file->private_data = fmixer;
  63         if (!try_module_get(card->module)) {
  64                 kfree(fmixer);
  65                 snd_card_file_remove(card, file);
  66                 return -EFAULT;
  67         }
  68         return 0;
  69 }
  70
  71 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  72 {
  73         snd_mixer_oss_file_t *fmixer;
  74
  75         if (file->private_data) {
  76                 fmixer = (snd_mixer_oss_file_t *) file->private_data;
  77                 module_put(fmixer->card->module);
  78                 snd_card_file_remove(fmixer->card, file);
  79                 kfree(fmixer);
  80         }
  81         return 0;
  82 }
  83
  84 static int snd_mixer_oss_info(snd_mixer_oss_file_t *fmixer,
  85                               mixer_info __user *_info)
  86 {
  87         snd_card_t *card = fmixer->card;
  88         snd_mixer_oss_t *mixer = fmixer->mixer;
  89         struct mixer_info info;
  90
  91         memset(&info, 0, sizeof(info));
  92         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
  93         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
  94         info.modify_counter = card->mixer_oss_change_count;
  95         if (copy_to_user(_info, &info, sizeof(info)))
  96                 return -EFAULT;
  97         return 0;
  98 }
  99
 100 static int snd_mixer_oss_info_obsolete(snd_mixer_oss_file_t *fmixer,
 101                                        _old_mixer_info __user *_info)
 102 {
 103         snd_card_t *card = fmixer->card;
 104         snd_mixer_oss_t *mixer = fmixer->mixer;
 105         _old_mixer_info info;
 106
 107         memset(&info, 0, sizeof(info));
 108         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 109         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 110         if (copy_to_user(_info, &info, sizeof(info)))
 111                 return -EFAULT;
 112         return 0;
 113 }
 114
 115 static int snd_mixer_oss_caps(snd_mixer_oss_file_t *fmixer)
 116 {
 117         snd_mixer_oss_t *mixer = fmixer->mixer;
 118         int result = 0;
 119
 120         if (mixer == NULL)
 121                 return -EIO;
 122         if (mixer->get_recsrc && mixer->put_recsrc)
 123                 result |= SOUND_CAP_EXCL_INPUT;
 124         return result;
 125 }
 126
 127 static int snd_mixer_oss_devmask(snd_mixer_oss_file_t *fmixer)
 128 {
 129         snd_mixer_oss_t *mixer = fmixer->mixer;
 130         snd_mixer_oss_slot_t *pslot;
 131         int result = 0, chn;
 132
 133         if (mixer == NULL)
 134                 return -EIO;
 135         for (chn = 0; chn < 31; chn++) {
 136                 pslot = &mixer->slots[chn];
 137                 if (pslot->put_volume || pslot->put_recsrc)
 138                         result |= 1 << chn;
 139         }
 140         return result;
 141 }
 142
 143 static int snd_mixer_oss_stereodevs(snd_mixer_oss_file_t *fmixer)
 144 {
 145         snd_mixer_oss_t *mixer = fmixer->mixer;
 146         snd_mixer_oss_slot_t *pslot;
 147         int result = 0, chn;
 148
 149         if (mixer == NULL)
 150                 return -EIO;
 151         for (chn = 0; chn < 31; chn++) {
 152                 pslot = &mixer->slots[chn];
 153                 if (pslot->put_volume && pslot->stereo)
 154                         result |= 1 << chn;
 155         }
 156         return result;
 157 }
 158
 159 static int snd_mixer_oss_recmask(snd_mixer_oss_file_t *fmixer)
 160 {
 161         snd_mixer_oss_t *mixer = fmixer->mixer;
 162         int result = 0;
 163
 164         if (mixer == NULL)
 165                 return -EIO;
 166         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 167                 result = mixer->mask_recsrc;
 168         } else {
 169                 snd_mixer_oss_slot_t *pslot;
 170                 int chn;
 171                 for (chn = 0; chn < 31; chn++) {
 172                         pslot = &mixer->slots[chn];
 173                         if (pslot->put_recsrc)
 174                                 result |= 1 << chn;
 175                 }
 176         }
 177         return result;
 178 }
 179
 180 static int snd_mixer_oss_get_recsrc(snd_mixer_oss_file_t *fmixer)
 181 {
 182         snd_mixer_oss_t *mixer = fmixer->mixer;
 183         int result = 0;
 184
 185         if (mixer == NULL)
 186                 return -EIO;
 187         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 188                 int err;
 189                 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
 190                         return err;
 191                 result = 1 << result;
 192         } else {
 193                 snd_mixer_oss_slot_t *pslot;
 194                 int chn;
 195                 for (chn = 0; chn < 31; chn++) {
 196                         pslot = &mixer->slots[chn];
 197                         if (pslot->get_recsrc) {
 198                                 int active = 0;
 199                                 pslot->get_recsrc(fmixer, pslot, &active);
 200                                 if (active)
 201                                         result |= 1 << chn;
 202                         }
 203                 }
 204         }
 205         return mixer->oss_recsrc = result;
 206 }
 207
 208 static int snd_mixer_oss_set_recsrc(snd_mixer_oss_file_t *fmixer, int recsrc)
 209 {
 210         snd_mixer_oss_t *mixer = fmixer->mixer;
 211         snd_mixer_oss_slot_t *pslot;
 212         int chn, active;
 213         int result = 0;
 214
 215         if (mixer == NULL)
 216                 return -EIO;
 217         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 218                 if (recsrc & ~mixer->oss_recsrc)
 219                         recsrc &= ~mixer->oss_recsrc;
 220                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 221                 mixer->get_recsrc(fmixer, &result);
 222                 result = 1 << result;
 223         }
 224         for (chn = 0; chn < 31; chn++) {
 225                 pslot = &mixer->slots[chn];
 226                 if (pslot->put_recsrc) {
 227                         active = (recsrc & (1 << chn)) ? 1 : 0;
 228                         pslot->put_recsrc(fmixer, pslot, active);
 229                 }
 230         }
 231         if (! result) {
 232                 for (chn = 0; chn < 31; chn++) {
 233                         pslot = &mixer->slots[chn];
 234                         if (pslot->get_recsrc) {
 235                                 active = 0;
 236                                 pslot->get_recsrc(fmixer, pslot, &active);
 237                                 if (active)
 238                                         result |= 1 << chn;
 239                         }
 240                 }
 241         }
 242         return result;
 243 }
 244
 245 static int snd_mixer_oss_get_volume(snd_mixer_oss_file_t *fmixer, int slot)
 246 {
 247         snd_mixer_oss_t *mixer = fmixer->mixer;
 248         snd_mixer_oss_slot_t *pslot;
 249         int result = 0, left, right;
 250
 251         if (mixer == NULL || slot > 30)
 252                 return -EIO;
 253         pslot = &mixer->slots[slot];
 254         left = pslot->volume[0];
 255         right = pslot->volume[1];
 256         if (pslot->get_volume)
 257                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 258         if (!pslot->stereo)
 259                 right = left;
 260         snd_assert(left >= 0 && left <= 100, return -EIO);
 261         snd_assert(right >= 0 && right <= 100, return -EIO);
 262         if (result >= 0) {
 263                 pslot->volume[0] = left;
 264                 pslot->volume[1] = right;
 265                 result = (left & 0xff) | ((right & 0xff) << 8);
 266         }
 267         return result;
 268 }
 269
 270 static int snd_mixer_oss_set_volume(snd_mixer_oss_file_t *fmixer,
 271                                     int slot, int volume)
 272 {
 273         snd_mixer_oss_t *mixer = fmixer->mixer;
 274         snd_mixer_oss_slot_t *pslot;
 275         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 276
 277         if (mixer == NULL || slot > 30)
 278                 return -EIO;
 279         pslot = &mixer->slots[slot];
 280         if (left > 100)
 281                 left = 100;
 282         if (right > 100)
 283                 right = 100;
 284         if (!pslot->stereo)
 285                 right = left;
 286         if (pslot->put_volume)
 287                 result = pslot->put_volume(fmixer, pslot, left, right);
 288         if (result < 0)
 289                 return result;
 290         pslot->volume[0] = left;
 291         pslot->volume[1] = right;
 292         return (left & 0xff) | ((right & 0xff) << 8);
 293 }
 294
 295 static int snd_mixer_oss_ioctl1(snd_mixer_oss_file_t *fmixer, unsigned int cmd, unsigned long arg)
 296 {
 297         void __user *argp = (void __user *)arg;
 298         int __user *p = argp;
 299         int tmp;
 300
 301         snd_assert(fmixer != NULL, return -ENXIO);
 302         if (((cmd >> 8) & 0xff) == 'M') {
 303                 switch (cmd) {
 304                 case SOUND_MIXER_INFO:
 305                         return snd_mixer_oss_info(fmixer, argp);
 306                 case SOUND_OLD_MIXER_INFO:
 307                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 308                 case SOUND_MIXER_WRITE_RECSRC:
 309                         if (get_user(tmp, p))
 310                                 return -EFAULT;
 311                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 312                         if (tmp < 0)
 313                                 return tmp;
 314                         return put_user(tmp, p);
 315                 case OSS_GETVERSION:
 316                         return put_user(SNDRV_OSS_VERSION, p);
 317                 case OSS_ALSAEMULVER:
 318                         return put_user(1, p);
 319                 case SOUND_MIXER_READ_DEVMASK:
 320                         tmp = snd_mixer_oss_devmask(fmixer);
 321                         if (tmp < 0)
 322                                 return tmp;
 323                         return put_user(tmp, p);
 324                 case SOUND_MIXER_READ_STEREODEVS:
 325                         tmp = snd_mixer_oss_stereodevs(fmixer);
 326                         if (tmp < 0)
 327                                 return tmp;
 328                         return put_user(tmp, p);
 329                 case SOUND_MIXER_READ_RECMASK:
 330                         tmp = snd_mixer_oss_recmask(fmixer);
 331                         if (tmp < 0)
 332                                 return tmp;
 333                         return put_user(tmp, p);
 334                 case SOUND_MIXER_READ_CAPS:
 335                         tmp = snd_mixer_oss_caps(fmixer);
 336                         if (tmp < 0)
 337                                 return tmp;
 338                         return put_user(tmp, p);
 339                 case SOUND_MIXER_READ_RECSRC:
 340                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 341                         if (tmp < 0)
 342                                 return tmp;
 343                         return put_user(tmp, p);
 344                 }
 345         }
 346         if (cmd & SIOC_IN) {
 347                 if (get_user(tmp, p))
 348                         return -EFAULT;
 349                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 350                 if (tmp < 0)
 351                         return tmp;
 352                 return put_user(tmp, p);
 353         } else if (cmd & SIOC_OUT) {
 354                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 355                 if (tmp < 0)
 356                         return tmp;
 357                 return put_user(tmp, p);
 358         }
 359         return -ENXIO;
 360 }
 361
 362 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 363 {
 364         return snd_mixer_oss_ioctl1((snd_mixer_oss_file_t *) file->private_data, cmd, arg);
 365 }
 366
 367 int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg)
 368 {
 369         snd_mixer_oss_file_t fmixer;
 370
 371         snd_assert(card != NULL, return -ENXIO);
 372         if (card->mixer_oss == NULL)
 373                 return -ENXIO;
 374         memset(&fmixer, 0, sizeof(fmixer));
 375         fmixer.card = card;
 376         fmixer.mixer = card->mixer_oss;
 377         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 378 }
 379
 380 #ifdef CONFIG_COMPAT
 381 /* all compatible */
 382 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 383 #else
 384 #define snd_mixer_oss_ioctl_compat      NULL
 385 #endif
 386
 387 /*
 388  *  REGISTRATION PART
 389  */
 390
 391 static struct file_operations snd_mixer_oss_f_ops =
 392 {
 393         .owner =        THIS_MODULE,
 394         .open =         snd_mixer_oss_open,
 395         .release =      snd_mixer_oss_release,
 396         .unlocked_ioctl =       snd_mixer_oss_ioctl,
 397         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 398 };
 399
 400 static snd_minor_t snd_mixer_oss_reg =
 401 {
 402         .comment =      "mixer",
 403         .f_ops =        &snd_mixer_oss_f_ops,
 404 };
 405
 406 /*
 407  *  utilities
 408  */
 409
 410 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 411 {
 412         long orange = omax - omin, nrange = nmax - nmin;
 413
 414         if (orange == 0)
 415                 return 0;
 416         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 417 }
 418
 419 /* convert from alsa native to oss values (0-100) */
 420 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 421 {
 422         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 423                 return *old;
 424         return snd_mixer_oss_conv(val, min, max, 0, 100);
 425 }
 426
 427 /* convert from oss to alsa native values */
 428 static long snd_mixer_oss_conv2(long val, long min, long max)
 429 {
 430         return snd_mixer_oss_conv(val, 0, 100, min, max);
 431 }
 432
 433 #if 0
 434 static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot)
 435 {
 436         snd_mixer_oss_t *mixer = card->mixer_oss;
 437         if (mixer)
 438                 mixer->mask_recsrc |= 1 << slot;
 439 }
 440
 441 static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot)
 442 {
 443         snd_mixer_oss_t *mixer = card->mixer_oss;
 444         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 445                 return 1;
 446         return 0;
 447 }
 448 #endif
 449
 450 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 451
 452 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 453 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 454 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 455 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 456 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 457 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 458 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 459 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 460 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 461 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 462 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 463
 464 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 465
 466 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 467 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 468 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 469 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 470 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 471 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 472 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 473 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 474 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 475 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 476 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 477
 478 struct slot {
 479         unsigned int signature;
 480         unsigned int present;
 481         unsigned int channels;
 482         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 483         unsigned int capture_item;
 484         struct snd_mixer_oss_assign_table *assigned;
 485         unsigned int allocated: 1;
 486 };
 487
 488 #define ID_UNKNOWN      ((unsigned int)-1)
 489
 490 static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index)
 491 {
 492         snd_card_t * card = mixer->card;
 493         snd_ctl_elem_id_t id;
 494
 495         memset(&id, 0, sizeof(id));
 496         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 497         strcpy(id.name, name);
 498         id.index = index;
 499         return snd_ctl_find_id(card, &id);
 500 }
 501
 502 static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer,
 503                                           snd_mixer_oss_slot_t *pslot,
 504                                           unsigned int numid,
 505                                           int *left, int *right)
 506 {
 507         snd_ctl_elem_info_t *uinfo;
 508         snd_ctl_elem_value_t *uctl;
 509         snd_kcontrol_t *kctl;
 510         snd_card_t *card = fmixer->card;
 511
 512         if (numid == ID_UNKNOWN)
 513                 return;
 514         down_read(&card->controls_rwsem);
 515         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 516                 up_read(&card->controls_rwsem);
 517                 return;
 518         }
 519         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 520         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 521         if (uinfo == NULL || uctl == NULL)
 522                 goto __unalloc;
 523         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 524         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 525         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
 526         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 527         if (uinfo->count > 1)
 528                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 529       __unalloc:
 530         up_read(&card->controls_rwsem);
 531         kfree(uctl);
 532         kfree(uinfo);
 533 }
 534
 535 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
 536                                          snd_mixer_oss_slot_t *pslot,
 537                                          unsigned int numid,
 538                                          int *left, int *right,
 539                                          int route)
 540 {
 541         snd_ctl_elem_info_t *uinfo;
 542         snd_ctl_elem_value_t *uctl;
 543         snd_kcontrol_t *kctl;
 544         snd_card_t *card = fmixer->card;
 545
 546         if (numid == ID_UNKNOWN)
 547                 return;
 548         down_read(&card->controls_rwsem);
 549         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 550                 up_read(&card->controls_rwsem);
 551                 return;
 552         }
 553         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 554         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 555         if (uinfo == NULL || uctl == NULL)
 556                 goto __unalloc;
 557         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 558         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 559         if (!uctl->value.integer.value[0]) {
 560                 *left = 0;
 561                 if (uinfo->count == 1)
 562                         *right = 0;
 563         }
 564         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 565                 *right = 0;
 566       __unalloc:
 567         up_read(&card->controls_rwsem);
 568         kfree(uctl);
 569         kfree(uinfo);
 570 }
 571
 572 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
 573                                      snd_mixer_oss_slot_t *pslot,
 574                                      int *left, int *right)
 575 {
 576         struct slot *slot = (struct slot *)pslot->private_data;
 577
 578         *left = *right = 100;
 579         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 580                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 581         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 582                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 583         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 584                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 585         }
 586         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 587                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 588         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 589                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 590         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 591                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 592         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 593                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 594         }
 595         return 0;
 596 }
 597
 598 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
 599                                           snd_mixer_oss_slot_t *pslot,
 600                                           unsigned int numid,
 601                                           int left, int right)
 602 {
 603         snd_ctl_elem_info_t *uinfo;
 604         snd_ctl_elem_value_t *uctl;
 605         snd_kcontrol_t *kctl;
 606         snd_card_t *card = fmixer->card;
 607         int res;
 608
 609         if (numid == ID_UNKNOWN)
 610                 return;
 611         down_read(&card->controls_rwsem);
 612         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 613                 return;
 614         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 615         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 616         if (uinfo == NULL || uctl == NULL)
 617                 goto __unalloc;
 618         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 619         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
 620         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 621         if (uinfo->count > 1)
 622                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 623         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 624         if (res > 0)
 625                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 626       __unalloc:
 627         up_read(&card->controls_rwsem);
 628         kfree(uctl);
 629         kfree(uinfo);
 630 }
 631
 632 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
 633                                          snd_mixer_oss_slot_t *pslot,
 634                                          unsigned int numid,
 635                                          int left, int right,
 636                                          int route)
 637 {
 638         snd_ctl_elem_info_t *uinfo;
 639         snd_ctl_elem_value_t *uctl;
 640         snd_kcontrol_t *kctl;
 641         snd_card_t *card = fmixer->card;
 642         int res;
 643
 644         if (numid == ID_UNKNOWN)
 645                 return;
 646         down_read(&card->controls_rwsem);
 647         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 648                 up_read(&fmixer->card->controls_rwsem);
 649                 return;
 650         }
 651         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 652         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 653         if (uinfo == NULL || uctl == NULL)
 654                 goto __unalloc;
 655         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 656         if (uinfo->count > 1) {
 657                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 658                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 659                 if (route) {
 660                         uctl->value.integer.value[1] =
 661                         uctl->value.integer.value[2] = 0;
 662                 }
 663         } else {
 664                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 665         }
 666         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 667         if (res > 0)
 668                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 669       __unalloc:
 670         up_read(&card->controls_rwsem);
 671         kfree(uctl);
 672         kfree(uinfo);
 673 }
 674
 675 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
 676                                      snd_mixer_oss_slot_t *pslot,
 677                                      int left, int right)
 678 {
 679         struct slot *slot = (struct slot *)pslot->private_data;
 680
 681         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 682                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 683                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 684                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 685         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 686                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 687         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 688                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 689         }
 690         if (left || right) {
 691                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 692                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 693                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 694                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 695                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 696                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 697                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 698                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 699         } else {
 700                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 701                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 702                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 703                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 704                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 705                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 706                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 707                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 708                 }
 709         }
 710         return 0;
 711 }
 712
 713 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 714                                         snd_mixer_oss_slot_t *pslot,
 715                                         int *active)
 716 {
 717         struct slot *slot = (struct slot *)pslot->private_data;
 718         int left, right;
 719
 720         left = right = 1;
 721         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 722         *active = (left || right) ? 1 : 0;
 723         return 0;
 724 }
 725
 726 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 727                                            snd_mixer_oss_slot_t *pslot,
 728                                            int *active)
 729 {
 730         struct slot *slot = (struct slot *)pslot->private_data;
 731         int left, right;
 732
 733         left = right = 1;
 734         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 735         *active = (left || right) ? 1 : 0;
 736         return 0;
 737 }
 738
 739 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 740                                         snd_mixer_oss_slot_t *pslot,
 741                                         int active)
 742 {
 743         struct slot *slot = (struct slot *)pslot->private_data;
 744
 745         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 746         return 0;
 747 }
 748
 749 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 750                                            snd_mixer_oss_slot_t *pslot,
 751                                            int active)
 752 {
 753         struct slot *slot = (struct slot *)pslot->private_data;
 754
 755         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 756         return 0;
 757 }
 758
 759 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
 760 {
 761         snd_card_t *card = fmixer->card;
 762         snd_mixer_oss_t *mixer = fmixer->mixer;
 763         snd_kcontrol_t *kctl;
 764         snd_mixer_oss_slot_t *pslot;
 765         struct slot *slot;
 766         snd_ctl_elem_info_t *uinfo;
 767         snd_ctl_elem_value_t *uctl;
 768         int err, idx;
 769
 770         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 771         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 772         if (uinfo == NULL || uctl == NULL) {
 773                 err = -ENOMEM;
 774                 goto __unlock;
 775         }
 776         down_read(&card->controls_rwsem);
 777         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 778         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 779         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 780         snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock);
 781         for (idx = 0; idx < 32; idx++) {
 782                 if (!(mixer->mask_recsrc & (1 << idx)))
 783                         continue;
 784                 pslot = &mixer->slots[idx];
 785                 slot = (struct slot *)pslot->private_data;
 786                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 787                         continue;
 788                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 789                         continue;
 790                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 791                         *active_index = idx;
 792                         break;
 793                 }
 794         }
 795         err = 0;
 796       __unlock:
 797         up_read(&card->controls_rwsem);
 798         kfree(uctl);
 799         kfree(uinfo);
 800         return err;
 801 }
 802
 803 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
 804 {
 805         snd_card_t *card = fmixer->card;
 806         snd_mixer_oss_t *mixer = fmixer->mixer;
 807         snd_kcontrol_t *kctl;
 808         snd_mixer_oss_slot_t *pslot;
 809         struct slot *slot = NULL;
 810         snd_ctl_elem_info_t *uinfo;
 811         snd_ctl_elem_value_t *uctl;
 812         int err;
 813         unsigned int idx;
 814
 815         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 816         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 817         if (uinfo == NULL || uctl == NULL) {
 818                 err = -ENOMEM;
 819                 goto __unlock;
 820         }
 821         down_read(&card->controls_rwsem);
 822         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 823         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 824         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 825         for (idx = 0; idx < 32; idx++) {
 826                 if (!(mixer->mask_recsrc & (1 << idx)))
 827                         continue;
 828                 pslot = &mixer->slots[idx];
 829                 slot = (struct slot *)pslot->private_data;
 830                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 831                         continue;
 832                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 833                         continue;
 834                 if (idx == active_index)
 835                         break;
 836                 slot = NULL;
 837         }
 838         snd_runtime_check(slot != NULL, goto __unlock);
 839         for (idx = 0; idx < uinfo->count; idx++)
 840                 uctl->value.enumerated.item[idx] = slot->capture_item;
 841         snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, );
 842         if (err > 0)
 843                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 844         err = 0;
 845       __unlock:
 846         up_read(&card->controls_rwsem);
 847         kfree(uctl);
 848         kfree(uinfo);
 849         return err;
 850 }
 851
 852 struct snd_mixer_oss_assign_table {
 853         int oss_id;
 854         const char *name;
 855         int index;
 856 };
 857
 858 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
 859 {
 860         snd_ctl_elem_info_t *info;
 861         snd_kcontrol_t *kcontrol;
 862         snd_card_t *card = mixer->card;
 863         int err;
 864
 865         down_read(&card->controls_rwsem);
 866         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 867         if (kcontrol == NULL) {
 868                 up_read(&card->controls_rwsem);
 869                 return 0;
 870         }
 871         info = kmalloc(sizeof(*info), GFP_KERNEL);
 872         if (! info) {
 873                 up_read(&card->controls_rwsem);
 874                 return -ENOMEM;
 875         }
 876         if ((err = kcontrol->info(kcontrol, info)) < 0) {
 877                 up_read(&card->controls_rwsem);
 878                 kfree(info);
 879                 return err;
 880         }
 881         slot->numid[item] = kcontrol->id.numid;
 882         up_read(&card->controls_rwsem);
 883         if (info->count > slot->channels)
 884                 slot->channels = info->count;
 885         slot->present |= 1 << item;
 886         kfree(info);
 887         return 0;
 888 }
 889
 890 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
 891 {
 892         struct slot *p = (struct slot *)chn->private_data;
 893         if (p) {
 894                 if (p->allocated && p->assigned) {
 895                         kfree(p->assigned->name);
 896                         kfree(p->assigned);
 897                 }
 898                 kfree(p);
 899         }
 900 }
 901
 902 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
 903 {
 904         int idx = rslot->number; /* remember this */
 905         if (rslot->private_free)
 906                 rslot->private_free(rslot);
 907         memset(rslot, 0, sizeof(*rslot));
 908         rslot->number = idx;
 909 }
 910
 911 /*
 912  * build an OSS mixer element.
 913  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 914  * when replace_old = 1, the old entry is replaced with the new one.
 915  */
 916 static int snd_mixer_oss_build_input(snd_mixer_oss_t *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
 917 {
 918         struct slot slot;
 919         struct slot *pslot;
 920         snd_kcontrol_t *kctl;
 921         snd_mixer_oss_slot_t *rslot;
 922         char str[64];
 923
 924         /* check if already assigned */
 925         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
 926                 return 0;
 927
 928         memset(&slot, 0, sizeof(slot));
 929         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
 930         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
 931                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
 932                 return 0;
 933         sprintf(str, "%s Switch", ptr->name);
 934         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 935                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
 936                 return 0;
 937         sprintf(str, "%s Route", ptr->name);
 938         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 939                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
 940                 return 0;
 941         sprintf(str, "%s Volume", ptr->name);
 942         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 943                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
 944                 return 0;
 945         sprintf(str, "%s Playback Switch", ptr->name);
 946         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 947                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
 948                 return 0;
 949         sprintf(str, "%s Playback Route", ptr->name);
 950         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 951                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
 952                 return 0;
 953         sprintf(str, "%s Playback Volume", ptr->name);
 954         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 955                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
 956                 return 0;
 957         sprintf(str, "%s Capture Switch", ptr->name);
 958         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 959                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
 960                 return 0;
 961         sprintf(str, "%s Capture Route", ptr->name);
 962         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 963                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
 964                 return 0;
 965         sprintf(str, "%s Capture Volume", ptr->name);
 966         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 967                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
 968                 return 0;
 969         down_read(&mixer->card->controls_rwsem);
 970         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
 971                 snd_ctl_elem_info_t *uinfo;
 972
 973                 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
 974                 if (! uinfo) {
 975                         up_read(&mixer->card->controls_rwsem);
 976                         return -ENOMEM;
 977                 }
 978
 979                 memset(uinfo, 0, sizeof(*uinfo));
 980                 if (kctl->info(kctl, uinfo)) {
 981                         up_read(&mixer->card->controls_rwsem);
 982                         return 0;
 983                 }
 984                 strcpy(str, ptr->name);
 985                 if (!strcmp(str, "Master"))
 986                         strcpy(str, "Mix");
 987                 if (!strcmp(str, "Master Mono"))
 988                         strcpy(str, "Mix Mono");
 989                 slot.capture_item = 0;
 990                 if (!strcmp(uinfo->value.enumerated.name, str)) {
 991                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
 992                 } else {
 993                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
 994                                 uinfo->value.enumerated.item = slot.capture_item;
 995                                 if (kctl->info(kctl, uinfo)) {
 996                                         up_read(&mixer->card->controls_rwsem);
 997                                         return 0;
 998                                 }
 999                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1000                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1001                                         break;
1002                                 }
1003                         }
1004                 }
1005                 kfree(uinfo);
1006         }
1007         up_read(&mixer->card->controls_rwsem);
1008         if (slot.present != 0) {
1009                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1010                 snd_runtime_check(pslot != NULL, return -ENOMEM);
1011                 *pslot = slot;
1012                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1013                 pslot->assigned = ptr;
1014                 pslot->allocated = ptr_allocated;
1015                 rslot = &mixer->slots[ptr->oss_id];
1016                 mixer_slot_clear(rslot);
1017                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1018                 rslot->get_volume = snd_mixer_oss_get_volume1;
1019                 rslot->put_volume = snd_mixer_oss_put_volume1;
1020                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1021                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1022                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1023                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1024                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1025                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1026                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1027                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1028                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1029                 }
1030                 rslot->private_data = pslot;
1031                 rslot->private_free = snd_mixer_oss_slot_free;
1032                 return 1;
1033         }
1034         return 0;
1035 }
1036
1037 /*
1038  */
1039 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1040 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1041         MIXER_VOL(VOLUME),
1042         MIXER_VOL(BASS),
1043         MIXER_VOL(TREBLE),
1044         MIXER_VOL(SYNTH),
1045         MIXER_VOL(PCM),
1046         MIXER_VOL(SPEAKER),
1047         MIXER_VOL(LINE),
1048         MIXER_VOL(MIC),
1049         MIXER_VOL(CD),
1050         MIXER_VOL(IMIX),
1051         MIXER_VOL(ALTPCM),
1052         MIXER_VOL(RECLEV),
1053         MIXER_VOL(IGAIN),
1054         MIXER_VOL(OGAIN),
1055         MIXER_VOL(LINE1),
1056         MIXER_VOL(LINE2),
1057         MIXER_VOL(LINE3),
1058         MIXER_VOL(DIGITAL1),
1059         MIXER_VOL(DIGITAL2),
1060         MIXER_VOL(DIGITAL3),
1061         MIXER_VOL(PHONEIN),
1062         MIXER_VOL(PHONEOUT),
1063         MIXER_VOL(VIDEO),
1064         MIXER_VOL(RADIO),
1065         MIXER_VOL(MONITOR),
1066 };
1067
1068 /*
1069  *  /proc interface
1070  */
1071
1072 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1073                                     snd_info_buffer_t * buffer)
1074 {
1075         snd_mixer_oss_t *mixer = entry->private_data;
1076         int i;
1077
1078         down(&mixer->reg_mutex);
1079         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1080                 struct slot *p;
1081
1082                 if (! oss_mixer_names[i])
1083                         continue;
1084                 p = (struct slot *)mixer->slots[i].private_data;
1085                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1086                 if (p && p->assigned)
1087                         snd_iprintf(buffer, "\"%s\" %d\n",
1088                                     p->assigned->name,
1089                                     p->assigned->index);
1090                 else
1091                         snd_iprintf(buffer, "\"\" 0\n");
1092         }
1093         up(&mixer->reg_mutex);
1094 }
1095
1096 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1097                                      snd_info_buffer_t * buffer)
1098 {
1099         snd_mixer_oss_t *mixer = entry->private_data;
1100         char line[128], str[32], idxstr[16], *cptr;
1101         int ch, idx;
1102         struct snd_mixer_oss_assign_table *tbl;
1103         struct slot *slot;
1104
1105         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1106                 cptr = snd_info_get_str(str, line, sizeof(str));
1107                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1108                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1109                                 break;
1110                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1111                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1112                         continue;
1113                 }
1114                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1115                 if (! *str) {
1116                         /* remove the entry */
1117                         down(&mixer->reg_mutex);
1118                         mixer_slot_clear(&mixer->slots[ch]);
1119                         up(&mixer->reg_mutex);
1120                         continue;
1121                 }
1122                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1123                 idx = simple_strtoul(idxstr, NULL, 10);
1124                 if (idx >= 0x4000) { /* too big */
1125                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1126                         continue;
1127                 }
1128                 down(&mixer->reg_mutex);
1129                 slot = (struct slot *)mixer->slots[ch].private_data;
1130                 if (slot && slot->assigned &&
1131                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1132                         /* not changed */
1133                         goto __unlock;
1134                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1135                 if (! tbl) {
1136                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1137                         goto __unlock;
1138                 }
1139                 tbl->oss_id = ch;
1140                 tbl->name = snd_kmalloc_strdup(str, GFP_KERNEL);
1141                 if (! tbl->name) {
1142                         kfree(tbl);
1143                         goto __unlock;
1144                 }
1145                 tbl->index = idx;
1146                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1147                         kfree(tbl->name);
1148                         kfree(tbl);
1149                 }
1150         __unlock:
1151                 up(&mixer->reg_mutex);
1152         }
1153 }
1154
1155 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1156 {
1157         snd_info_entry_t *entry;
1158
1159         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1160                                            mixer->card->proc_root);
1161         if (! entry)
1162                 return;
1163         entry->content = SNDRV_INFO_CONTENT_TEXT;
1164         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1165         entry->c.text.read_size = 8192;
1166         entry->c.text.read = snd_mixer_oss_proc_read;
1167         entry->c.text.write_size = 8192;
1168         entry->c.text.write = snd_mixer_oss_proc_write;
1169         entry->private_data = mixer;
1170         if (snd_info_register(entry) < 0) {
1171                 snd_info_free_entry(entry);
1172                 entry = NULL;
1173         }
1174         mixer->proc_entry = entry;
1175 }
1176
1177 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1178 {
1179         if (mixer->proc_entry) {
1180                 snd_info_unregister(mixer->proc_entry);
1181                 mixer->proc_entry = NULL;
1182         }
1183 }
1184
1185 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1186 {
1187         static struct snd_mixer_oss_assign_table table[] = {
1188                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1189                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1190                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1191                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1192                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1193                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1194                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1195                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1196                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1197                 { SOUND_MIXER_LINE,     "Line",                 0 },
1198                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1199                 { SOUND_MIXER_CD,       "CD",                   0 },
1200                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1201                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1202                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1203                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1204                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1205                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1206                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1207                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1208                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1209                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1210                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1211                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1212                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1213                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1214                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1215                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1216                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1217                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1218                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1219                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1220                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1221                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1222         };
1223         unsigned int idx;
1224
1225         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1226                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1227         if (mixer->mask_recsrc) {
1228                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1229                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1230         }
1231 }
1232
1233 /*
1234  *
1235  */
1236
1237 static int snd_mixer_oss_free1(void *private)
1238 {
1239         snd_mixer_oss_t *mixer = private;
1240         snd_card_t * card;
1241         int idx;
1242
1243         snd_assert(mixer != NULL, return -ENXIO);
1244         card = mixer->card;
1245         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1246         card->mixer_oss = NULL;
1247         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1248                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1249                 if (chn->private_free)
1250                         chn->private_free(chn);
1251         }
1252         kfree(mixer);
1253         return 0;
1254 }
1255
1256 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1257 {
1258         snd_mixer_oss_t *mixer;
1259
1260         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1261                 char name[128];
1262                 int idx, err;
1263
1264                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1265                 if (mixer == NULL)
1266                         return -ENOMEM;
1267                 init_MUTEX(&mixer->reg_mutex);
1268                 sprintf(name, "mixer%i%i", card->number, 0);
1269                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1270                                                    card, 0,
1271                                                    &snd_mixer_oss_reg,
1272                                                    name)) < 0) {
1273                         snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0);
1274                         kfree(mixer);
1275                         return err;
1276                 }
1277                 mixer->oss_dev_alloc = 1;
1278                 mixer->card = card;
1279                 if (*card->mixername)
1280                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1281                 else
1282                         strlcpy(mixer->name, name, sizeof(mixer->name));
1283 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1284                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1285                                       card->number,
1286                                       mixer->name);
1287 #endif
1288                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1289                         mixer->slots[idx].number = idx;
1290                 card->mixer_oss = mixer;
1291                 snd_mixer_oss_build(mixer);
1292                 snd_mixer_oss_proc_init(mixer);
1293         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1294                 mixer = card->mixer_oss;
1295                 if (mixer == NULL || !mixer->oss_dev_alloc)
1296                         return 0;
1297                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1298                 mixer->oss_dev_alloc = 0;
1299         } else {                /* free */
1300                 mixer = card->mixer_oss;
1301                 if (mixer == NULL)
1302                         return 0;
1303 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1304                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1305 #endif
1306                 if (mixer->oss_dev_alloc)
1307                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1308                 snd_mixer_oss_proc_done(mixer);
1309                 return snd_mixer_oss_free1(mixer);
1310         }
1311         return 0;
1312 }
1313
1314 static int __init alsa_mixer_oss_init(void)
1315 {
1316         int idx;
1317
1318         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1319         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1320                 if (snd_cards[idx])
1321                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1322         }
1323         return 0;
1324 }
1325
1326 static void __exit alsa_mixer_oss_exit(void)
1327 {
1328         int idx;
1329
1330         snd_mixer_oss_notify_callback = NULL;
1331         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1332                 if (snd_cards[idx])
1333                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1334         }
1335 }
1336
1337 module_init(alsa_mixer_oss_init)
1338 module_exit(alsa_mixer_oss_exit)
1339
1340 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);