sound/core/oss/mixer_oss.c

   1 /*
   2  *  OSS emulation layer for the mixer interface
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/time.h>
  26 #include <sound/core.h>
  27 #include <sound/minors.h>
  28 #include <sound/control.h>
  29 #include <sound/info.h>
  30 #include <sound/mixer_oss.h>
  31 #include <linux/soundcard.h>
  32
  33 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  34
  35 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  36 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  37 MODULE_LICENSE("GPL");
  38 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  39
  40 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  41 {
  42         int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
  43         snd_card_t *card;
  44         snd_mixer_oss_file_t *fmixer;
  45         int err;
  46
  47         if ((card = snd_cards[cardnum]) == NULL)
  48                 return -ENODEV;
  49         if (card->mixer_oss == NULL)
  50                 return -ENODEV;
  51         err = snd_card_file_add(card, file);
  52         if (err < 0)
  53                 return err;
  54         fmixer = (snd_mixer_oss_file_t *)snd_kcalloc(sizeof(*fmixer), GFP_KERNEL);
  55         if (fmixer == NULL) {
  56                 snd_card_file_remove(card, file);
  57                 return -ENOMEM;
  58         }
  59         fmixer->card = card;
  60         fmixer->mixer = card->mixer_oss;
  61         file->private_data = fmixer;
  62         if (!try_module_get(card->module)) {
  63                 kfree(fmixer);
  64                 snd_card_file_remove(card, file);
  65                 return -EFAULT;
  66         }
  67         return 0;
  68 }
  69
  70 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  71 {
  72         snd_mixer_oss_file_t *fmixer;
  73
  74         if (file->private_data) {
  75                 fmixer = (snd_mixer_oss_file_t *) file->private_data;
  76                 module_put(fmixer->card->module);
  77                 snd_card_file_remove(fmixer->card, file);
  78                 kfree(fmixer);
  79         }
  80         return 0;
  81 }
  82
  83 static int snd_mixer_oss_info(snd_mixer_oss_file_t *fmixer,
  84                               mixer_info __user *_info)
  85 {
  86         snd_card_t *card = fmixer->card;
  87         snd_mixer_oss_t *mixer = fmixer->mixer;
  88         struct mixer_info info;
  89
  90         memset(&info, 0, sizeof(info));
  91         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
  92         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
  93         info.modify_counter = card->mixer_oss_change_count;
  94         if (copy_to_user(_info, &info, sizeof(info)))
  95                 return -EFAULT;
  96         return 0;
  97 }
  98
  99 static int snd_mixer_oss_info_obsolete(snd_mixer_oss_file_t *fmixer,
 100                                        _old_mixer_info __user *_info)
 101 {
 102         snd_card_t *card = fmixer->card;
 103         snd_mixer_oss_t *mixer = fmixer->mixer;
 104         _old_mixer_info info;
 105
 106         memset(&info, 0, sizeof(info));
 107         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 108         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 109         if (copy_to_user(_info, &info, sizeof(info)))
 110                 return -EFAULT;
 111         return 0;
 112 }
 113
 114 static int snd_mixer_oss_caps(snd_mixer_oss_file_t *fmixer)
 115 {
 116         snd_mixer_oss_t *mixer = fmixer->mixer;
 117         int result = 0;
 118
 119         if (mixer == NULL)
 120                 return -EIO;
 121         if (mixer->get_recsrc && mixer->put_recsrc)
 122                 result |= SOUND_CAP_EXCL_INPUT;
 123         return result;
 124 }
 125
 126 static int snd_mixer_oss_devmask(snd_mixer_oss_file_t *fmixer)
 127 {
 128         snd_mixer_oss_t *mixer = fmixer->mixer;
 129         snd_mixer_oss_slot_t *pslot;
 130         int result = 0, chn;
 131
 132         if (mixer == NULL)
 133                 return -EIO;
 134         for (chn = 0; chn < 31; chn++) {
 135                 pslot = &mixer->slots[chn];
 136                 if (pslot->put_volume || pslot->put_recsrc)
 137                         result |= 1 << chn;
 138         }
 139         return result;
 140 }
 141
 142 static int snd_mixer_oss_stereodevs(snd_mixer_oss_file_t *fmixer)
 143 {
 144         snd_mixer_oss_t *mixer = fmixer->mixer;
 145         snd_mixer_oss_slot_t *pslot;
 146         int result = 0, chn;
 147
 148         if (mixer == NULL)
 149                 return -EIO;
 150         for (chn = 0; chn < 31; chn++) {
 151                 pslot = &mixer->slots[chn];
 152                 if (pslot->put_volume && pslot->stereo)
 153                         result |= 1 << chn;
 154         }
 155         return result;
 156 }
 157
 158 static int snd_mixer_oss_recmask(snd_mixer_oss_file_t *fmixer)
 159 {
 160         snd_mixer_oss_t *mixer = fmixer->mixer;
 161         int result = 0;
 162
 163         if (mixer == NULL)
 164                 return -EIO;
 165         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 166                 result = mixer->mask_recsrc;
 167         } else {
 168                 snd_mixer_oss_slot_t *pslot;
 169                 int chn;
 170                 for (chn = 0; chn < 31; chn++) {
 171                         pslot = &mixer->slots[chn];
 172                         if (pslot->put_recsrc)
 173                                 result |= 1 << chn;
 174                 }
 175         }
 176         return result;
 177 }
 178
 179 static int snd_mixer_oss_get_recsrc(snd_mixer_oss_file_t *fmixer)
 180 {
 181         snd_mixer_oss_t *mixer = fmixer->mixer;
 182         int result = 0;
 183
 184         if (mixer == NULL)
 185                 return -EIO;
 186         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 187                 int err;
 188                 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
 189                         return err;
 190                 result = 1 << result;
 191         } else {
 192                 snd_mixer_oss_slot_t *pslot;
 193                 int chn;
 194                 for (chn = 0; chn < 31; chn++) {
 195                         pslot = &mixer->slots[chn];
 196                         if (pslot->get_recsrc) {
 197                                 int active = 0;
 198                                 pslot->get_recsrc(fmixer, pslot, &active);
 199                                 if (active)
 200                                         result |= 1 << chn;
 201                         }
 202                 }
 203         }
 204         return mixer->oss_recsrc = result;
 205 }
 206
 207 static int snd_mixer_oss_set_recsrc(snd_mixer_oss_file_t *fmixer, int recsrc)
 208 {
 209         snd_mixer_oss_t *mixer = fmixer->mixer;
 210         snd_mixer_oss_slot_t *pslot;
 211         int chn, active;
 212         int result = 0;
 213
 214         if (mixer == NULL)
 215                 return -EIO;
 216         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 217                 if (recsrc & ~mixer->oss_recsrc)
 218                         recsrc &= ~mixer->oss_recsrc;
 219                 mixer->put_recsrc(fmixer, ffz(~recsrc));
 220                 mixer->get_recsrc(fmixer, &result);
 221                 result = 1 << result;
 222         }
 223         for (chn = 0; chn < 31; chn++) {
 224                 pslot = &mixer->slots[chn];
 225                 if (pslot->put_recsrc) {
 226                         active = (recsrc & (1 << chn)) ? 1 : 0;
 227                         pslot->put_recsrc(fmixer, pslot, active);
 228                 }
 229         }
 230         if (! result) {
 231                 for (chn = 0; chn < 31; chn++) {
 232                         pslot = &mixer->slots[chn];
 233                         if (pslot->get_recsrc) {
 234                                 active = 0;
 235                                 pslot->get_recsrc(fmixer, pslot, &active);
 236                                 if (active)
 237                                         result |= 1 << chn;
 238                         }
 239                 }
 240         }
 241         return result;
 242 }
 243
 244 static int snd_mixer_oss_get_volume(snd_mixer_oss_file_t *fmixer, int slot)
 245 {
 246         snd_mixer_oss_t *mixer = fmixer->mixer;
 247         snd_mixer_oss_slot_t *pslot;
 248         int result = 0, left, right;
 249
 250         if (mixer == NULL || slot > 30)
 251                 return -EIO;
 252         pslot = &mixer->slots[slot];
 253         left = pslot->volume[0];
 254         right = pslot->volume[1];
 255         if (pslot->get_volume)
 256                 result = pslot->get_volume(fmixer, pslot, &left, &right);
 257         if (!pslot->stereo)
 258                 right = left;
 259         snd_assert(left >= 0 && left <= 100, return -EIO);
 260         snd_assert(right >= 0 && right <= 100, return -EIO);
 261         if (result >= 0) {
 262                 pslot->volume[0] = left;
 263                 pslot->volume[1] = right;
 264                 result = (left & 0xff) | ((right & 0xff) << 8);
 265         }
 266         return result;
 267 }
 268
 269 static int snd_mixer_oss_set_volume(snd_mixer_oss_file_t *fmixer,
 270                                     int slot, int volume)
 271 {
 272         snd_mixer_oss_t *mixer = fmixer->mixer;
 273         snd_mixer_oss_slot_t *pslot;
 274         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 275
 276         if (mixer == NULL || slot > 30)
 277                 return -EIO;
 278         pslot = &mixer->slots[slot];
 279         if (left > 100)
 280                 left = 100;
 281         if (right > 100)
 282                 right = 100;
 283         if (!pslot->stereo)
 284                 right = left;
 285         if (pslot->put_volume)
 286                 result = pslot->put_volume(fmixer, pslot, left, right);
 287         if (result < 0)
 288                 return result;
 289         pslot->volume[0] = left;
 290         pslot->volume[1] = right;
 291         return (left & 0xff) | ((right & 0xff) << 8);
 292 }
 293
 294 static int snd_mixer_oss_ioctl1(snd_mixer_oss_file_t *fmixer, unsigned int cmd, unsigned long arg)
 295 {
 296         void __user *argp = (void __user *)arg;
 297         int __user *p = argp;
 298         int tmp;
 299
 300         snd_assert(fmixer != NULL, return -ENXIO);
 301         if (((cmd >> 8) & 0xff) == 'M') {
 302                 switch (cmd) {
 303                 case SOUND_MIXER_INFO:
 304                         return snd_mixer_oss_info(fmixer, argp);
 305                 case SOUND_OLD_MIXER_INFO:
 306                         return snd_mixer_oss_info_obsolete(fmixer, argp);
 307                 case SOUND_MIXER_WRITE_RECSRC:
 308                         if (get_user(tmp, p))
 309                                 return -EFAULT;
 310                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 311                         if (tmp < 0)
 312                                 return tmp;
 313                         return put_user(tmp, p);
 314                 case OSS_GETVERSION:
 315                         return put_user(SNDRV_OSS_VERSION, p);
 316                 case OSS_ALSAEMULVER:
 317                         return put_user(1, p);
 318                 case SOUND_MIXER_READ_DEVMASK:
 319                         tmp = snd_mixer_oss_devmask(fmixer);
 320                         if (tmp < 0)
 321                                 return tmp;
 322                         return put_user(tmp, p);
 323                 case SOUND_MIXER_READ_STEREODEVS:
 324                         tmp = snd_mixer_oss_stereodevs(fmixer);
 325                         if (tmp < 0)
 326                                 return tmp;
 327                         return put_user(tmp, p);
 328                 case SOUND_MIXER_READ_RECMASK:
 329                         tmp = snd_mixer_oss_recmask(fmixer);
 330                         if (tmp < 0)
 331                                 return tmp;
 332                         return put_user(tmp, p);
 333                 case SOUND_MIXER_READ_CAPS:
 334                         tmp = snd_mixer_oss_caps(fmixer);
 335                         if (tmp < 0)
 336                                 return tmp;
 337                         return put_user(tmp, p);
 338                 case SOUND_MIXER_READ_RECSRC:
 339                         tmp = snd_mixer_oss_get_recsrc(fmixer);
 340                         if (tmp < 0)
 341                                 return tmp;
 342                         return put_user(tmp, p);
 343                 }
 344         }
 345         if (cmd & SIOC_IN) {
 346                 if (get_user(tmp, p))
 347                         return -EFAULT;
 348                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 349                 if (tmp < 0)
 350                         return tmp;
 351                 return put_user(tmp, p);
 352         } else if (cmd & SIOC_OUT) {
 353                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 354                 if (tmp < 0)
 355                         return tmp;
 356                 return put_user(tmp, p);
 357         }
 358         return -ENXIO;
 359 }
 360
 361 int snd_mixer_oss_ioctl(struct inode *inode, struct file *file,
 362                         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 /*
 381  *  REGISTRATION PART
 382  */
 383
 384 static struct file_operations snd_mixer_oss_f_ops =
 385 {
 386         .owner =        THIS_MODULE,
 387         .open =         snd_mixer_oss_open,
 388         .release =      snd_mixer_oss_release,
 389         .ioctl =        snd_mixer_oss_ioctl,
 390 };
 391
 392 static snd_minor_t snd_mixer_oss_reg =
 393 {
 394         .comment =      "mixer",
 395         .f_ops =        &snd_mixer_oss_f_ops,
 396 };
 397
 398 /*
 399  *  utilities
 400  */
 401
 402 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 403 {
 404         long orange = omax - omin, nrange = nmax - nmin;
 405
 406         if (orange == 0)
 407                 return 0;
 408         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 409 }
 410
 411 /* convert from alsa native to oss values (0-100) */
 412 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 413 {
 414         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 415                 return *old;
 416         return snd_mixer_oss_conv(val, min, max, 0, 100);
 417 }
 418
 419 /* convert from oss to alsa native values */
 420 static long snd_mixer_oss_conv2(long val, long min, long max)
 421 {
 422         return snd_mixer_oss_conv(val, 0, 100, min, max);
 423 }
 424
 425 #if 0
 426 static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot)
 427 {
 428         snd_mixer_oss_t *mixer = card->mixer_oss;
 429         if (mixer)
 430                 mixer->mask_recsrc |= 1 << slot;
 431 }
 432
 433 static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot)
 434 {
 435         snd_mixer_oss_t *mixer = card->mixer_oss;
 436         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 437                 return 1;
 438         return 0;
 439 }
 440 #endif
 441
 442 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 443
 444 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 445 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 446 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 447 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 448 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 449 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 450 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 451 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 452 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 453 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 454 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 455
 456 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 457
 458 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 459 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 460 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 461 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 462 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 463 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 464 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 465 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 466 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 467 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 468 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 469
 470 struct slot {
 471         unsigned int signature;
 472         unsigned int present;
 473         unsigned int channels;
 474         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 475         unsigned int capture_item;
 476         struct snd_mixer_oss_assign_table *assigned;
 477         unsigned int allocated: 1;
 478 };
 479
 480 #define ID_UNKNOWN      ((unsigned int)-1)
 481
 482 static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index)
 483 {
 484         snd_card_t * card = mixer->card;
 485         snd_ctl_elem_id_t id;
 486
 487         memset(&id, 0, sizeof(id));
 488         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 489         strcpy(id.name, name);
 490         id.index = index;
 491         return snd_ctl_find_id(card, &id);
 492 }
 493
 494 static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer,
 495                                           snd_mixer_oss_slot_t *pslot,
 496                                           unsigned int numid,
 497                                           int *left, int *right)
 498 {
 499         snd_ctl_elem_info_t *uinfo;
 500         snd_ctl_elem_value_t *uctl;
 501         snd_kcontrol_t *kctl;
 502         snd_card_t *card = fmixer->card;
 503
 504         if (numid == ID_UNKNOWN)
 505                 return;
 506         down_read(&card->controls_rwsem);
 507         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 508                 up_read(&card->controls_rwsem);
 509                 return;
 510         }
 511         uinfo = snd_kcalloc(sizeof(*uinfo), GFP_KERNEL);
 512         uctl = snd_kcalloc(sizeof(*uctl), GFP_KERNEL);
 513         if (uinfo == NULL || uctl == NULL)
 514                 goto __unalloc;
 515         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 516         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 517         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, return);
 518         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 519         if (uinfo->count > 1)
 520                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 521       __unalloc:
 522         up_read(&card->controls_rwsem);
 523         if (uctl)
 524                 kfree(uctl);
 525         if (uinfo)
 526                 kfree(uinfo);
 527 }
 528
 529 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
 530                                          snd_mixer_oss_slot_t *pslot,
 531                                          unsigned int numid,
 532                                          int *left, int *right,
 533                                          int route)
 534 {
 535         snd_ctl_elem_info_t *uinfo;
 536         snd_ctl_elem_value_t *uctl;
 537         snd_kcontrol_t *kctl;
 538         snd_card_t *card = fmixer->card;
 539
 540         if (numid == ID_UNKNOWN)
 541                 return;
 542         down_read(&card->controls_rwsem);
 543         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 544                 up_read(&card->controls_rwsem);
 545                 return;
 546         }
 547         uinfo = snd_kcalloc(sizeof(*uinfo), GFP_KERNEL);
 548         uctl = snd_kcalloc(sizeof(*uctl), GFP_KERNEL);
 549         if (uinfo == NULL || uctl == NULL)
 550                 goto __unalloc;
 551         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 552         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 553         if (!uctl->value.integer.value[0]) {
 554                 *left = 0;
 555                 if (uinfo->count == 1)
 556                         *right = 0;
 557         }
 558         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 559                 *right = 0;
 560       __unalloc:
 561         up_read(&card->controls_rwsem);
 562         if (uctl)
 563                 kfree(uctl);
 564         if (uinfo)
 565                 kfree(uinfo);
 566 }
 567
 568 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
 569                                      snd_mixer_oss_slot_t *pslot,
 570                                      int *left, int *right)
 571 {
 572         struct slot *slot = (struct slot *)pslot->private_data;
 573
 574         *left = *right = 100;
 575         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 576                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 577         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 578                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 579         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 580                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 581         }
 582         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 583                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 584         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 585                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 586         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 587                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 588         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 589                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 590         }
 591         return 0;
 592 }
 593
 594 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
 595                                           snd_mixer_oss_slot_t *pslot,
 596                                           unsigned int numid,
 597                                           int left, int right)
 598 {
 599         snd_ctl_elem_info_t *uinfo;
 600         snd_ctl_elem_value_t *uctl;
 601         snd_kcontrol_t *kctl;
 602         snd_card_t *card = fmixer->card;
 603         int res;
 604
 605         if (numid == ID_UNKNOWN)
 606                 return;
 607         down_read(&card->controls_rwsem);
 608         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 609                 return;
 610         uinfo = snd_kcalloc(sizeof(*uinfo), GFP_KERNEL);
 611         uctl = snd_kcalloc(sizeof(*uctl), GFP_KERNEL);
 612         if (uinfo == NULL || uctl == NULL)
 613                 goto __unalloc;
 614         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 615         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, return);
 616         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 617         if (uinfo->count > 1)
 618                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 619         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 620         if (res > 0)
 621                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 622       __unalloc:
 623         up_read(&card->controls_rwsem);
 624         if (uctl)
 625                 kfree(uctl);
 626         if (uinfo)
 627                 kfree(uinfo);
 628 }
 629
 630 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
 631                                          snd_mixer_oss_slot_t *pslot,
 632                                          unsigned int numid,
 633                                          int left, int right,
 634                                          int route)
 635 {
 636         snd_ctl_elem_info_t *uinfo;
 637         snd_ctl_elem_value_t *uctl;
 638         snd_kcontrol_t *kctl;
 639         snd_card_t *card = fmixer->card;
 640         int res;
 641
 642         if (numid == ID_UNKNOWN)
 643                 return;
 644         down_read(&card->controls_rwsem);
 645         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 646                 up_read(&fmixer->card->controls_rwsem);
 647                 return;
 648         }
 649         uinfo = snd_kcalloc(sizeof(*uinfo), GFP_KERNEL);
 650         uctl = snd_kcalloc(sizeof(*uctl), GFP_KERNEL);
 651         if (uinfo == NULL || uctl == NULL)
 652                 goto __unalloc;
 653         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 654         if (uinfo->count > 1) {
 655                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 656                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 657                 if (route) {
 658                         uctl->value.integer.value[1] =
 659                         uctl->value.integer.value[2] = 0;
 660                 }
 661         } else {
 662                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 663         }
 664         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 665         if (res > 0)
 666                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 667       __unalloc:
 668         up_read(&card->controls_rwsem);
 669         if (uctl)
 670                 kfree(uctl);
 671         if (uinfo)
 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 = snd_kcalloc(sizeof(*uinfo), GFP_KERNEL);
 771         uctl = snd_kcalloc(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         if (uctl)
 799                 kfree(uctl);
 800         if (uinfo)
 801                 kfree(uinfo);
 802         return err;
 803 }
 804
 805 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
 806 {
 807         snd_card_t *card = fmixer->card;
 808         snd_mixer_oss_t *mixer = fmixer->mixer;
 809         snd_kcontrol_t *kctl;
 810         snd_mixer_oss_slot_t *pslot;
 811         struct slot *slot = NULL;
 812         snd_ctl_elem_info_t *uinfo;
 813         snd_ctl_elem_value_t *uctl;
 814         int err;
 815         unsigned int idx;
 816
 817         uinfo = snd_kcalloc(sizeof(*uinfo), GFP_KERNEL);
 818         uctl = snd_kcalloc(sizeof(*uctl), GFP_KERNEL);
 819         if (uinfo == NULL || uctl == NULL) {
 820                 err = -ENOMEM;
 821                 goto __unlock;
 822         }
 823         down_read(&card->controls_rwsem);
 824         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 825         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 826         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 827         for (idx = 0; idx < 32; idx++) {
 828                 if (!(mixer->mask_recsrc & (1 << idx)))
 829                         continue;
 830                 pslot = &mixer->slots[idx];
 831                 slot = (struct slot *)pslot->private_data;
 832                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 833                         continue;
 834                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 835                         continue;
 836                 if (idx == active_index)
 837                         break;
 838                 slot = NULL;
 839         }
 840         snd_runtime_check(slot != NULL, goto __unlock);
 841         for (idx = 0; idx < uinfo->count; idx++)
 842                 uctl->value.enumerated.item[idx] = slot->capture_item;
 843         snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, );
 844         if (err > 0)
 845                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 846         err = 0;
 847       __unlock:
 848         up_read(&card->controls_rwsem);
 849         if (uctl)
 850                 kfree(uctl);
 851         if (uinfo)
 852                 kfree(uinfo);
 853         return err;
 854 }
 855
 856 struct snd_mixer_oss_assign_table {
 857         int oss_id;
 858         const char *name;
 859         int index;
 860 };
 861
 862 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
 863 {
 864         snd_ctl_elem_info_t info;
 865         snd_kcontrol_t *kcontrol;
 866         snd_card_t *card = mixer->card;
 867         int err;
 868
 869         down_read(&card->controls_rwsem);
 870         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 871         if (kcontrol == NULL) {
 872                 up_read(&card->controls_rwsem);
 873                 return 0;
 874         }
 875         if ((err = kcontrol->info(kcontrol, &info)) < 0) {
 876                 up_read(&card->controls_rwsem);
 877                 return err;
 878         }
 879         slot->numid[item] = kcontrol->id.numid;
 880         up_read(&card->controls_rwsem);
 881         if (info.count > slot->channels)
 882                 slot->channels = info.count;
 883         slot->present |= 1 << item;
 884         return 0;
 885 }
 886
 887 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
 888 {
 889         struct slot *p = (struct slot *)chn->private_data;
 890         if (p) {
 891                 if (p->allocated && p->assigned) {
 892                         kfree(p->assigned->name);
 893                         kfree(p->assigned);
 894                 }
 895                 kfree(p);
 896         }
 897 }
 898
 899 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
 900 {
 901         int idx = rslot->number; /* remember this */
 902         if (rslot->private_free)
 903                 rslot->private_free(rslot);
 904         memset(rslot, 0, sizeof(*rslot));
 905         rslot->number = idx;
 906 }
 907
 908 /*
 909  * build an OSS mixer element.
 910  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 911  * when replace_old = 1, the old entry is replaced with the new one.
 912  */
 913 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)
 914 {
 915         struct slot slot;
 916         struct slot *pslot;
 917         snd_kcontrol_t *kctl;
 918         snd_mixer_oss_slot_t *rslot;
 919         char str[64];
 920
 921         /* check if already assigned */
 922         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
 923                 return 0;
 924
 925         memset(&slot, 0, sizeof(slot));
 926         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
 927         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
 928                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
 929                 return 0;
 930         sprintf(str, "%s Switch", ptr->name);
 931         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 932                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
 933                 return 0;
 934         sprintf(str, "%s Route", ptr->name);
 935         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 936                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
 937                 return 0;
 938         sprintf(str, "%s Volume", ptr->name);
 939         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 940                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
 941                 return 0;
 942         sprintf(str, "%s Playback Switch", ptr->name);
 943         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 944                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
 945                 return 0;
 946         sprintf(str, "%s Playback Route", ptr->name);
 947         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 948                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
 949                 return 0;
 950         sprintf(str, "%s Playback Volume", ptr->name);
 951         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 952                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
 953                 return 0;
 954         sprintf(str, "%s Capture Switch", ptr->name);
 955         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 956                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
 957                 return 0;
 958         sprintf(str, "%s Capture Route", ptr->name);
 959         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 960                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
 961                 return 0;
 962         sprintf(str, "%s Capture Volume", ptr->name);
 963         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 964                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
 965                 return 0;
 966         down_read(&mixer->card->controls_rwsem);
 967         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
 968                 snd_ctl_elem_info_t uinfo;
 969
 970                 memset(&uinfo, 0, sizeof(uinfo));
 971                 if (kctl->info(kctl, &uinfo))
 972                         return 0;
 973                 strcpy(str, ptr->name);
 974                 if (!strcmp(str, "Master"))
 975                         strcpy(str, "Mix");
 976                 if (!strcmp(str, "Master Mono"))
 977                         strcpy(str, "Mix Mono");
 978                 slot.capture_item = 0;
 979                 if (!strcmp(uinfo.value.enumerated.name, str)) {
 980                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
 981                 } else {
 982                         for (slot.capture_item = 1; slot.capture_item < uinfo.value.enumerated.items; slot.capture_item++) {
 983                                 uinfo.value.enumerated.item = slot.capture_item;
 984                                 if (kctl->info(kctl, &uinfo)) {
 985                                         up_read(&mixer->card->controls_rwsem);
 986                                         return 0;
 987                                 }
 988                                 if (!strcmp(uinfo.value.enumerated.name, str)) {
 989                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
 990                                         break;
 991                                 }
 992                         }
 993                 }
 994         }
 995         up_read(&mixer->card->controls_rwsem);
 996         if (slot.present != 0) {
 997                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
 998                 snd_runtime_check(pslot != NULL, return -ENOMEM);
 999                 *pslot = slot;
1000                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1001                 pslot->assigned = ptr;
1002                 pslot->allocated = ptr_allocated;
1003                 rslot = &mixer->slots[ptr->oss_id];
1004                 mixer_slot_clear(rslot);
1005                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1006                 rslot->get_volume = snd_mixer_oss_get_volume1;
1007                 rslot->put_volume = snd_mixer_oss_put_volume1;
1008                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1009                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1010                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1011                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1012                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1013                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1014                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1015                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1016                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1017                 }
1018                 rslot->private_data = pslot;
1019                 rslot->private_free = snd_mixer_oss_slot_free;
1020                 return 1;
1021         }
1022         return 0;
1023 }
1024
1025 /*
1026  */
1027 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1028 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1029         MIXER_VOL(VOLUME),
1030         MIXER_VOL(BASS),
1031         MIXER_VOL(TREBLE),
1032         MIXER_VOL(SYNTH),
1033         MIXER_VOL(PCM),
1034         MIXER_VOL(SPEAKER),
1035         MIXER_VOL(LINE),
1036         MIXER_VOL(MIC),
1037         MIXER_VOL(CD),
1038         MIXER_VOL(IMIX),
1039         MIXER_VOL(ALTPCM),
1040         MIXER_VOL(RECLEV),
1041         MIXER_VOL(IGAIN),
1042         MIXER_VOL(OGAIN),
1043         MIXER_VOL(LINE1),
1044         MIXER_VOL(LINE2),
1045         MIXER_VOL(LINE3),
1046         MIXER_VOL(DIGITAL1),
1047         MIXER_VOL(DIGITAL2),
1048         MIXER_VOL(DIGITAL3),
1049         MIXER_VOL(PHONEIN),
1050         MIXER_VOL(PHONEOUT),
1051         MIXER_VOL(VIDEO),
1052         MIXER_VOL(RADIO),
1053         MIXER_VOL(MONITOR),
1054 };
1055
1056 /*
1057  *  /proc interface
1058  */
1059
1060 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1061                                     snd_info_buffer_t * buffer)
1062 {
1063         snd_mixer_oss_t *mixer = snd_magic_cast(snd_mixer_oss_t, entry->private_data, return);
1064         int i;
1065
1066         down(&mixer->reg_mutex);
1067         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1068                 struct slot *p;
1069
1070                 if (! oss_mixer_names[i])
1071                         continue;
1072                 p = (struct slot *)mixer->slots[i].private_data;
1073                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1074                 if (p && p->assigned)
1075                         snd_iprintf(buffer, "\"%s\" %d\n",
1076                                     p->assigned->name,
1077                                     p->assigned->index);
1078                 else
1079                         snd_iprintf(buffer, "\"\" 0\n");
1080         }
1081         up(&mixer->reg_mutex);
1082 }
1083
1084 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1085                                      snd_info_buffer_t * buffer)
1086 {
1087         snd_mixer_oss_t *mixer = snd_magic_cast(snd_mixer_oss_t, entry->private_data, return);
1088         char line[128], str[32], idxstr[16], *cptr;
1089         int ch, idx;
1090         struct snd_mixer_oss_assign_table *tbl;
1091         struct slot *slot;
1092
1093         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1094                 cptr = snd_info_get_str(str, line, sizeof(str));
1095                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1096                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1097                                 break;
1098                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1099                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1100                         continue;
1101                 }
1102                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1103                 if (! *str) {
1104                         /* remove the entry */
1105                         down(&mixer->reg_mutex);
1106                         mixer_slot_clear(&mixer->slots[ch]);
1107                         up(&mixer->reg_mutex);
1108                         continue;
1109                 }
1110                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1111                 idx = simple_strtoul(idxstr, NULL, 10);
1112                 if (idx >= 0x4000) { /* too big */
1113                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1114                         continue;
1115                 }
1116                 down(&mixer->reg_mutex);
1117                 slot = (struct slot *)mixer->slots[ch].private_data;
1118                 if (slot && slot->assigned &&
1119                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1120                         /* not changed */
1121                         goto __unlock;
1122                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1123                 if (! tbl) {
1124                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1125                         goto __unlock;
1126                 }
1127                 tbl->oss_id = ch;
1128                 tbl->name = snd_kmalloc_strdup(str, GFP_KERNEL);
1129                 if (! tbl->name) {
1130                         kfree(tbl);
1131                         goto __unlock;
1132                 }
1133                 tbl->index = idx;
1134                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1135                         kfree(tbl->name);
1136                         kfree(tbl);
1137                 }
1138         __unlock:
1139                 up(&mixer->reg_mutex);
1140         }
1141 }
1142
1143 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1144 {
1145         snd_info_entry_t *entry;
1146
1147         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1148                                            mixer->card->proc_root);
1149         if (! entry)
1150                 return;
1151         entry->content = SNDRV_INFO_CONTENT_TEXT;
1152         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1153         entry->c.text.read_size = 8192;
1154         entry->c.text.read = snd_mixer_oss_proc_read;
1155         entry->c.text.write_size = 8192;
1156         entry->c.text.write = snd_mixer_oss_proc_write;
1157         entry->private_data = mixer;
1158         if (snd_info_register(entry) < 0) {
1159                 snd_info_free_entry(entry);
1160                 entry = NULL;
1161         }
1162         mixer->proc_entry = entry;
1163 }
1164
1165 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1166 {
1167         if (mixer->proc_entry) {
1168                 snd_info_unregister(mixer->proc_entry);
1169                 mixer->proc_entry = NULL;
1170         }
1171 }
1172
1173 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1174 {
1175         static struct snd_mixer_oss_assign_table table[] = {
1176                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1177                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1178                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1179                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1180                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1181                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1182                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1183                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1184                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1185                 { SOUND_MIXER_LINE,     "Line",                 0 },
1186                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1187                 { SOUND_MIXER_CD,       "CD",                   0 },
1188                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1189                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1190                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1191                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1192                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1193                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1194                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1195                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1196                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1197                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1198                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1199                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1200                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1201                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1202                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1203                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1204                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1205                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1206                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1207                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1208                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1209                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1210         };
1211         unsigned int idx;
1212
1213         for (idx = 0; idx < sizeof(table) / sizeof(struct snd_mixer_oss_assign_table); idx++)
1214                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1215         if (mixer->mask_recsrc) {
1216                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1217                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1218         }
1219 }
1220
1221 /*
1222  *
1223  */
1224
1225 static int snd_mixer_oss_free1(void *private)
1226 {
1227         snd_mixer_oss_t *mixer = snd_magic_cast(snd_mixer_oss_t, private, return -ENXIO);
1228         snd_card_t * card;
1229         int idx;
1230
1231         snd_assert(mixer != NULL, return -ENXIO);
1232         card = mixer->card;
1233         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1234         card->mixer_oss = NULL;
1235         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1236                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1237                 if (chn->private_free)
1238                         chn->private_free(chn);
1239         }
1240         snd_magic_kfree(mixer);
1241         return 0;
1242 }
1243
1244 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1245 {
1246         snd_mixer_oss_t *mixer;
1247
1248         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1249                 char name[128];
1250                 int idx, err;
1251
1252                 mixer = snd_magic_kcalloc(snd_mixer_oss_t, sizeof(snd_mixer_oss_t), GFP_KERNEL);
1253                 if (mixer == NULL)
1254                         return -ENOMEM;
1255                 init_MUTEX(&mixer->reg_mutex);
1256                 sprintf(name, "mixer%i%i", card->number, 0);
1257                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1258                                                    card, 0,
1259                                                    &snd_mixer_oss_reg,
1260                                                    name)) < 0) {
1261                         snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0);
1262                         snd_magic_kfree(mixer);
1263                         return err;
1264                 }
1265                 mixer->oss_dev_alloc = 1;
1266                 mixer->card = card;
1267                 if (*card->mixername)
1268                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1269                 else
1270                         strlcpy(mixer->name, name, sizeof(mixer->name));
1271 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1272                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1273                                       card->number,
1274                                       mixer->name);
1275 #endif
1276                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1277                         mixer->slots[idx].number = idx;
1278                 card->mixer_oss = mixer;
1279                 snd_mixer_oss_build(mixer);
1280                 snd_mixer_oss_proc_init(mixer);
1281         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1282                 mixer = card->mixer_oss;
1283                 if (mixer == NULL || !mixer->oss_dev_alloc)
1284                         return 0;
1285                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1286                 mixer->oss_dev_alloc = 0;
1287         } else {                /* free */
1288                 mixer = card->mixer_oss;
1289                 if (mixer == NULL)
1290                         return 0;
1291 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1292                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1293 #endif
1294                 if (mixer->oss_dev_alloc)
1295                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1296                 snd_mixer_oss_proc_done(mixer);
1297                 return snd_mixer_oss_free1(mixer);
1298         }
1299         return 0;
1300 }
1301
1302 static int __init alsa_mixer_oss_init(void)
1303 {
1304         int idx;
1305
1306         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1307         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1308                 if (snd_cards[idx])
1309                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1310         }
1311         return 0;
1312 }
1313
1314 static void __exit alsa_mixer_oss_exit(void)
1315 {
1316         int idx;
1317
1318         snd_mixer_oss_notify_callback = NULL;
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_FREE);
1322         }
1323 }
1324
1325 module_init(alsa_mixer_oss_init)
1326 module_exit(alsa_mixer_oss_exit)
1327
1328 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);