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 /* FIXME: need to unlock BKL to allow preemption */
 363 int snd_mixer_oss_ioctl(struct inode *inode, struct file *file,
 364                         unsigned int cmd, unsigned long arg)
 365 {
 366         int err;
 367         /* FIXME: need to unlock BKL to allow preemption */
 368         unlock_kernel();
 369         err = snd_mixer_oss_ioctl1((snd_mixer_oss_file_t *) file->private_data, cmd, arg);
 370         lock_kernel();
 371         return err;
 372 }
 373
 374 int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg)
 375 {
 376         snd_mixer_oss_file_t fmixer;
 377
 378         snd_assert(card != NULL, return -ENXIO);
 379         if (card->mixer_oss == NULL)
 380                 return -ENXIO;
 381         memset(&fmixer, 0, sizeof(fmixer));
 382         fmixer.card = card;
 383         fmixer.mixer = card->mixer_oss;
 384         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 385 }
 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         .ioctl =        snd_mixer_oss_ioctl,
 397 };
 398
 399 static snd_minor_t snd_mixer_oss_reg =
 400 {
 401         .comment =      "mixer",
 402         .f_ops =        &snd_mixer_oss_f_ops,
 403 };
 404
 405 /*
 406  *  utilities
 407  */
 408
 409 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 410 {
 411         long orange = omax - omin, nrange = nmax - nmin;
 412
 413         if (orange == 0)
 414                 return 0;
 415         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 416 }
 417
 418 /* convert from alsa native to oss values (0-100) */
 419 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 420 {
 421         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 422                 return *old;
 423         return snd_mixer_oss_conv(val, min, max, 0, 100);
 424 }
 425
 426 /* convert from oss to alsa native values */
 427 static long snd_mixer_oss_conv2(long val, long min, long max)
 428 {
 429         return snd_mixer_oss_conv(val, 0, 100, min, max);
 430 }
 431
 432 #if 0
 433 static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot)
 434 {
 435         snd_mixer_oss_t *mixer = card->mixer_oss;
 436         if (mixer)
 437                 mixer->mask_recsrc |= 1 << slot;
 438 }
 439
 440 static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot)
 441 {
 442         snd_mixer_oss_t *mixer = card->mixer_oss;
 443         if (mixer && (mixer->mask_recsrc & (1 << slot)))
 444                 return 1;
 445         return 0;
 446 }
 447 #endif
 448
 449 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 450
 451 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 452 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 453 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 454 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 455 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 456 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 457 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 458 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 459 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 460 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 461 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 462
 463 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
 464
 465 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 466 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 467 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 468 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 469 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 470 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 471 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 472 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 473 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 474 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 475 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 476
 477 struct slot {
 478         unsigned int signature;
 479         unsigned int present;
 480         unsigned int channels;
 481         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 482         unsigned int capture_item;
 483         struct snd_mixer_oss_assign_table *assigned;
 484         unsigned int allocated: 1;
 485 };
 486
 487 #define ID_UNKNOWN      ((unsigned int)-1)
 488
 489 static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index)
 490 {
 491         snd_card_t * card = mixer->card;
 492         snd_ctl_elem_id_t id;
 493
 494         memset(&id, 0, sizeof(id));
 495         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 496         strcpy(id.name, name);
 497         id.index = index;
 498         return snd_ctl_find_id(card, &id);
 499 }
 500
 501 static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer,
 502                                           snd_mixer_oss_slot_t *pslot,
 503                                           unsigned int numid,
 504                                           int *left, int *right)
 505 {
 506         snd_ctl_elem_info_t *uinfo;
 507         snd_ctl_elem_value_t *uctl;
 508         snd_kcontrol_t *kctl;
 509         snd_card_t *card = fmixer->card;
 510
 511         if (numid == ID_UNKNOWN)
 512                 return;
 513         down_read(&card->controls_rwsem);
 514         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 515                 up_read(&card->controls_rwsem);
 516                 return;
 517         }
 518         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 519         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 520         if (uinfo == NULL || uctl == NULL)
 521                 goto __unalloc;
 522         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 523         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 524         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, return);
 525         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 526         if (uinfo->count > 1)
 527                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 528       __unalloc:
 529         up_read(&card->controls_rwsem);
 530         if (uctl)
 531                 kfree(uctl);
 532         if (uinfo)
 533                 kfree(uinfo);
 534 }
 535
 536 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
 537                                          snd_mixer_oss_slot_t *pslot,
 538                                          unsigned int numid,
 539                                          int *left, int *right,
 540                                          int route)
 541 {
 542         snd_ctl_elem_info_t *uinfo;
 543         snd_ctl_elem_value_t *uctl;
 544         snd_kcontrol_t *kctl;
 545         snd_card_t *card = fmixer->card;
 546
 547         if (numid == ID_UNKNOWN)
 548                 return;
 549         down_read(&card->controls_rwsem);
 550         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 551                 up_read(&card->controls_rwsem);
 552                 return;
 553         }
 554         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 555         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 556         if (uinfo == NULL || uctl == NULL)
 557                 goto __unalloc;
 558         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 559         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
 560         if (!uctl->value.integer.value[0]) {
 561                 *left = 0;
 562                 if (uinfo->count == 1)
 563                         *right = 0;
 564         }
 565         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 566                 *right = 0;
 567       __unalloc:
 568         up_read(&card->controls_rwsem);
 569         if (uctl)
 570                 kfree(uctl);
 571         if (uinfo)
 572                 kfree(uinfo);
 573 }
 574
 575 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
 576                                      snd_mixer_oss_slot_t *pslot,
 577                                      int *left, int *right)
 578 {
 579         struct slot *slot = (struct slot *)pslot->private_data;
 580
 581         *left = *right = 100;
 582         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 583                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 584         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 585                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 586         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 587                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 588         }
 589         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 590                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 591         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 592                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 593         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 594                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 595         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 596                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 597         }
 598         return 0;
 599 }
 600
 601 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
 602                                           snd_mixer_oss_slot_t *pslot,
 603                                           unsigned int numid,
 604                                           int left, int right)
 605 {
 606         snd_ctl_elem_info_t *uinfo;
 607         snd_ctl_elem_value_t *uctl;
 608         snd_kcontrol_t *kctl;
 609         snd_card_t *card = fmixer->card;
 610         int res;
 611
 612         if (numid == ID_UNKNOWN)
 613                 return;
 614         down_read(&card->controls_rwsem);
 615         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
 616                 return;
 617         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 618         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 619         if (uinfo == NULL || uctl == NULL)
 620                 goto __unalloc;
 621         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 622         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, return);
 623         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 624         if (uinfo->count > 1)
 625                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 626         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 627         if (res > 0)
 628                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 629       __unalloc:
 630         up_read(&card->controls_rwsem);
 631         if (uctl)
 632                 kfree(uctl);
 633         if (uinfo)
 634                 kfree(uinfo);
 635 }
 636
 637 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
 638                                          snd_mixer_oss_slot_t *pslot,
 639                                          unsigned int numid,
 640                                          int left, int right,
 641                                          int route)
 642 {
 643         snd_ctl_elem_info_t *uinfo;
 644         snd_ctl_elem_value_t *uctl;
 645         snd_kcontrol_t *kctl;
 646         snd_card_t *card = fmixer->card;
 647         int res;
 648
 649         if (numid == ID_UNKNOWN)
 650                 return;
 651         down_read(&card->controls_rwsem);
 652         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 653                 up_read(&fmixer->card->controls_rwsem);
 654                 return;
 655         }
 656         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 657         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 658         if (uinfo == NULL || uctl == NULL)
 659                 goto __unalloc;
 660         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
 661         if (uinfo->count > 1) {
 662                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 663                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 664                 if (route) {
 665                         uctl->value.integer.value[1] =
 666                         uctl->value.integer.value[2] = 0;
 667                 }
 668         } else {
 669                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 670         }
 671         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
 672         if (res > 0)
 673                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 674       __unalloc:
 675         up_read(&card->controls_rwsem);
 676         if (uctl)
 677                 kfree(uctl);
 678         if (uinfo)
 679                 kfree(uinfo);
 680 }
 681
 682 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
 683                                      snd_mixer_oss_slot_t *pslot,
 684                                      int left, int right)
 685 {
 686         struct slot *slot = (struct slot *)pslot->private_data;
 687
 688         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 689                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 690                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 691                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 692         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 693                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 694         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 695                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 696         }
 697         if (left || right) {
 698                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 699                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 700                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 701                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 702                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 703                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 704                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 705                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 706         } else {
 707                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 708                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 709                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 710                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 711                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 712                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 713                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 715                 }
 716         }
 717         return 0;
 718 }
 719
 720 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 721                                         snd_mixer_oss_slot_t *pslot,
 722                                         int *active)
 723 {
 724         struct slot *slot = (struct slot *)pslot->private_data;
 725         int left, right;
 726
 727         left = right = 1;
 728         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 729         *active = (left || right) ? 1 : 0;
 730         return 0;
 731 }
 732
 733 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 734                                            snd_mixer_oss_slot_t *pslot,
 735                                            int *active)
 736 {
 737         struct slot *slot = (struct slot *)pslot->private_data;
 738         int left, right;
 739
 740         left = right = 1;
 741         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 742         *active = (left || right) ? 1 : 0;
 743         return 0;
 744 }
 745
 746 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
 747                                         snd_mixer_oss_slot_t *pslot,
 748                                         int active)
 749 {
 750         struct slot *slot = (struct slot *)pslot->private_data;
 751
 752         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 753         return 0;
 754 }
 755
 756 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
 757                                            snd_mixer_oss_slot_t *pslot,
 758                                            int active)
 759 {
 760         struct slot *slot = (struct slot *)pslot->private_data;
 761
 762         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 763         return 0;
 764 }
 765
 766 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
 767 {
 768         snd_card_t *card = fmixer->card;
 769         snd_mixer_oss_t *mixer = fmixer->mixer;
 770         snd_kcontrol_t *kctl;
 771         snd_mixer_oss_slot_t *pslot;
 772         struct slot *slot;
 773         snd_ctl_elem_info_t *uinfo;
 774         snd_ctl_elem_value_t *uctl;
 775         int err, idx;
 776
 777         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 778         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 779         if (uinfo == NULL || uctl == NULL) {
 780                 err = -ENOMEM;
 781                 goto __unlock;
 782         }
 783         down_read(&card->controls_rwsem);
 784         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 785         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 786         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 787         snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock);
 788         for (idx = 0; idx < 32; idx++) {
 789                 if (!(mixer->mask_recsrc & (1 << idx)))
 790                         continue;
 791                 pslot = &mixer->slots[idx];
 792                 slot = (struct slot *)pslot->private_data;
 793                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 794                         continue;
 795                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 796                         continue;
 797                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
 798                         *active_index = idx;
 799                         break;
 800                 }
 801         }
 802         err = 0;
 803       __unlock:
 804         up_read(&card->controls_rwsem);
 805         if (uctl)
 806                 kfree(uctl);
 807         if (uinfo)
 808                 kfree(uinfo);
 809         return err;
 810 }
 811
 812 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
 813 {
 814         snd_card_t *card = fmixer->card;
 815         snd_mixer_oss_t *mixer = fmixer->mixer;
 816         snd_kcontrol_t *kctl;
 817         snd_mixer_oss_slot_t *pslot;
 818         struct slot *slot = NULL;
 819         snd_ctl_elem_info_t *uinfo;
 820         snd_ctl_elem_value_t *uctl;
 821         int err;
 822         unsigned int idx;
 823
 824         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
 825         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
 826         if (uinfo == NULL || uctl == NULL) {
 827                 err = -ENOMEM;
 828                 goto __unlock;
 829         }
 830         down_read(&card->controls_rwsem);
 831         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 832         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
 833         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
 834         for (idx = 0; idx < 32; idx++) {
 835                 if (!(mixer->mask_recsrc & (1 << idx)))
 836                         continue;
 837                 pslot = &mixer->slots[idx];
 838                 slot = (struct slot *)pslot->private_data;
 839                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 840                         continue;
 841                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 842                         continue;
 843                 if (idx == active_index)
 844                         break;
 845                 slot = NULL;
 846         }
 847         snd_runtime_check(slot != NULL, goto __unlock);
 848         for (idx = 0; idx < uinfo->count; idx++)
 849                 uctl->value.enumerated.item[idx] = slot->capture_item;
 850         snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, );
 851         if (err > 0)
 852                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 853         err = 0;
 854       __unlock:
 855         up_read(&card->controls_rwsem);
 856         if (uctl)
 857                 kfree(uctl);
 858         if (uinfo)
 859                 kfree(uinfo);
 860         return err;
 861 }
 862
 863 struct snd_mixer_oss_assign_table {
 864         int oss_id;
 865         const char *name;
 866         int index;
 867 };
 868
 869 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
 870 {
 871         snd_ctl_elem_info_t info;
 872         snd_kcontrol_t *kcontrol;
 873         snd_card_t *card = mixer->card;
 874         int err;
 875
 876         down_read(&card->controls_rwsem);
 877         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 878         if (kcontrol == NULL) {
 879                 up_read(&card->controls_rwsem);
 880                 return 0;
 881         }
 882         if ((err = kcontrol->info(kcontrol, &info)) < 0) {
 883                 up_read(&card->controls_rwsem);
 884                 return err;
 885         }
 886         slot->numid[item] = kcontrol->id.numid;
 887         up_read(&card->controls_rwsem);
 888         if (info.count > slot->channels)
 889                 slot->channels = info.count;
 890         slot->present |= 1 << item;
 891         return 0;
 892 }
 893
 894 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
 895 {
 896         struct slot *p = (struct slot *)chn->private_data;
 897         if (p) {
 898                 if (p->allocated && p->assigned) {
 899                         kfree(p->assigned->name);
 900                         kfree(p->assigned);
 901                 }
 902                 kfree(p);
 903         }
 904 }
 905
 906 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
 907 {
 908         int idx = rslot->number; /* remember this */
 909         if (rslot->private_free)
 910                 rslot->private_free(rslot);
 911         memset(rslot, 0, sizeof(*rslot));
 912         rslot->number = idx;
 913 }
 914
 915 /*
 916  * build an OSS mixer element.
 917  * ptr_allocated means the entry is dynamically allocated (change via proc file).
 918  * when replace_old = 1, the old entry is replaced with the new one.
 919  */
 920 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)
 921 {
 922         struct slot slot;
 923         struct slot *pslot;
 924         snd_kcontrol_t *kctl;
 925         snd_mixer_oss_slot_t *rslot;
 926         char str[64];
 927
 928         /* check if already assigned */
 929         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
 930                 return 0;
 931
 932         memset(&slot, 0, sizeof(slot));
 933         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
 934         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
 935                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
 936                 return 0;
 937         sprintf(str, "%s Switch", ptr->name);
 938         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 939                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
 940                 return 0;
 941         sprintf(str, "%s Route", ptr->name);
 942         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 943                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
 944                 return 0;
 945         sprintf(str, "%s Volume", ptr->name);
 946         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 947                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
 948                 return 0;
 949         sprintf(str, "%s Playback Switch", ptr->name);
 950         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 951                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
 952                 return 0;
 953         sprintf(str, "%s Playback Route", ptr->name);
 954         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 955                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
 956                 return 0;
 957         sprintf(str, "%s Playback Volume", ptr->name);
 958         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 959                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
 960                 return 0;
 961         sprintf(str, "%s Capture Switch", ptr->name);
 962         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 963                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
 964                 return 0;
 965         sprintf(str, "%s Capture Route", ptr->name);
 966         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 967                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
 968                 return 0;
 969         sprintf(str, "%s Capture Volume", ptr->name);
 970         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
 971                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
 972                 return 0;
 973         down_read(&mixer->card->controls_rwsem);
 974         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
 975                 snd_ctl_elem_info_t uinfo;
 976
 977                 memset(&uinfo, 0, sizeof(uinfo));
 978                 if (kctl->info(kctl, &uinfo)) {
 979                         up_read(&mixer->card->controls_rwsem);
 980                         return 0;
 981                 }
 982                 strcpy(str, ptr->name);
 983                 if (!strcmp(str, "Master"))
 984                         strcpy(str, "Mix");
 985                 if (!strcmp(str, "Master Mono"))
 986                         strcpy(str, "Mix Mono");
 987                 slot.capture_item = 0;
 988                 if (!strcmp(uinfo.value.enumerated.name, str)) {
 989                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
 990                 } else {
 991                         for (slot.capture_item = 1; slot.capture_item < uinfo.value.enumerated.items; slot.capture_item++) {
 992                                 uinfo.value.enumerated.item = slot.capture_item;
 993                                 if (kctl->info(kctl, &uinfo)) {
 994                                         up_read(&mixer->card->controls_rwsem);
 995                                         return 0;
 996                                 }
 997                                 if (!strcmp(uinfo.value.enumerated.name, str)) {
 998                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
 999                                         break;
1000                                 }
1001                         }
1002                 }
1003         }
1004         up_read(&mixer->card->controls_rwsem);
1005         if (slot.present != 0) {
1006                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1007                 snd_runtime_check(pslot != NULL, return -ENOMEM);
1008                 *pslot = slot;
1009                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1010                 pslot->assigned = ptr;
1011                 pslot->allocated = ptr_allocated;
1012                 rslot = &mixer->slots[ptr->oss_id];
1013                 mixer_slot_clear(rslot);
1014                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1015                 rslot->get_volume = snd_mixer_oss_get_volume1;
1016                 rslot->put_volume = snd_mixer_oss_put_volume1;
1017                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1018                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1019                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1020                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1021                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1022                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1023                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1024                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1025                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1026                 }
1027                 rslot->private_data = pslot;
1028                 rslot->private_free = snd_mixer_oss_slot_free;
1029                 return 1;
1030         }
1031         return 0;
1032 }
1033
1034 /*
1035  */
1036 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1037 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1038         MIXER_VOL(VOLUME),
1039         MIXER_VOL(BASS),
1040         MIXER_VOL(TREBLE),
1041         MIXER_VOL(SYNTH),
1042         MIXER_VOL(PCM),
1043         MIXER_VOL(SPEAKER),
1044         MIXER_VOL(LINE),
1045         MIXER_VOL(MIC),
1046         MIXER_VOL(CD),
1047         MIXER_VOL(IMIX),
1048         MIXER_VOL(ALTPCM),
1049         MIXER_VOL(RECLEV),
1050         MIXER_VOL(IGAIN),
1051         MIXER_VOL(OGAIN),
1052         MIXER_VOL(LINE1),
1053         MIXER_VOL(LINE2),
1054         MIXER_VOL(LINE3),
1055         MIXER_VOL(DIGITAL1),
1056         MIXER_VOL(DIGITAL2),
1057         MIXER_VOL(DIGITAL3),
1058         MIXER_VOL(PHONEIN),
1059         MIXER_VOL(PHONEOUT),
1060         MIXER_VOL(VIDEO),
1061         MIXER_VOL(RADIO),
1062         MIXER_VOL(MONITOR),
1063 };
1064
1065 /*
1066  *  /proc interface
1067  */
1068
1069 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1070                                     snd_info_buffer_t * buffer)
1071 {
1072         snd_mixer_oss_t *mixer = entry->private_data;
1073         int i;
1074
1075         down(&mixer->reg_mutex);
1076         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1077                 struct slot *p;
1078
1079                 if (! oss_mixer_names[i])
1080                         continue;
1081                 p = (struct slot *)mixer->slots[i].private_data;
1082                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1083                 if (p && p->assigned)
1084                         snd_iprintf(buffer, "\"%s\" %d\n",
1085                                     p->assigned->name,
1086                                     p->assigned->index);
1087                 else
1088                         snd_iprintf(buffer, "\"\" 0\n");
1089         }
1090         up(&mixer->reg_mutex);
1091 }
1092
1093 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1094                                      snd_info_buffer_t * buffer)
1095 {
1096         snd_mixer_oss_t *mixer = entry->private_data;
1097         char line[128], str[32], idxstr[16], *cptr;
1098         int ch, idx;
1099         struct snd_mixer_oss_assign_table *tbl;
1100         struct slot *slot;
1101
1102         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1103                 cptr = snd_info_get_str(str, line, sizeof(str));
1104                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1105                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1106                                 break;
1107                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1108                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1109                         continue;
1110                 }
1111                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1112                 if (! *str) {
1113                         /* remove the entry */
1114                         down(&mixer->reg_mutex);
1115                         mixer_slot_clear(&mixer->slots[ch]);
1116                         up(&mixer->reg_mutex);
1117                         continue;
1118                 }
1119                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1120                 idx = simple_strtoul(idxstr, NULL, 10);
1121                 if (idx >= 0x4000) { /* too big */
1122                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1123                         continue;
1124                 }
1125                 down(&mixer->reg_mutex);
1126                 slot = (struct slot *)mixer->slots[ch].private_data;
1127                 if (slot && slot->assigned &&
1128                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1129                         /* not changed */
1130                         goto __unlock;
1131                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1132                 if (! tbl) {
1133                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1134                         goto __unlock;
1135                 }
1136                 tbl->oss_id = ch;
1137                 tbl->name = snd_kmalloc_strdup(str, GFP_KERNEL);
1138                 if (! tbl->name) {
1139                         kfree(tbl);
1140                         goto __unlock;
1141                 }
1142                 tbl->index = idx;
1143                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1144                         kfree(tbl->name);
1145                         kfree(tbl);
1146                 }
1147         __unlock:
1148                 up(&mixer->reg_mutex);
1149         }
1150 }
1151
1152 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1153 {
1154         snd_info_entry_t *entry;
1155
1156         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1157                                            mixer->card->proc_root);
1158         if (! entry)
1159                 return;
1160         entry->content = SNDRV_INFO_CONTENT_TEXT;
1161         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1162         entry->c.text.read_size = 8192;
1163         entry->c.text.read = snd_mixer_oss_proc_read;
1164         entry->c.text.write_size = 8192;
1165         entry->c.text.write = snd_mixer_oss_proc_write;
1166         entry->private_data = mixer;
1167         if (snd_info_register(entry) < 0) {
1168                 snd_info_free_entry(entry);
1169                 entry = NULL;
1170         }
1171         mixer->proc_entry = entry;
1172 }
1173
1174 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1175 {
1176         if (mixer->proc_entry) {
1177                 snd_info_unregister(mixer->proc_entry);
1178                 mixer->proc_entry = NULL;
1179         }
1180 }
1181
1182 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1183 {
1184         static struct snd_mixer_oss_assign_table table[] = {
1185                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1186                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1187                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1188                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1189                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1190                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1191                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1192                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1193                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1194                 { SOUND_MIXER_LINE,     "Line",                 0 },
1195                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1196                 { SOUND_MIXER_CD,       "CD",                   0 },
1197                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1198                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1199                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1200                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1201                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1202                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1203                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1204                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1205                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1206                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1207                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1208                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1209                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1210                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1211                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1212                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1213                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1214                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1215                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1216                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1217                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1218                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1219         };
1220         unsigned int idx;
1221
1222         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1223                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1224         if (mixer->mask_recsrc) {
1225                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1226                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1227         }
1228 }
1229
1230 /*
1231  *
1232  */
1233
1234 static int snd_mixer_oss_free1(void *private)
1235 {
1236         snd_mixer_oss_t *mixer = private;
1237         snd_card_t * card;
1238         int idx;
1239
1240         snd_assert(mixer != NULL, return -ENXIO);
1241         card = mixer->card;
1242         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1243         card->mixer_oss = NULL;
1244         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1245                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1246                 if (chn->private_free)
1247                         chn->private_free(chn);
1248         }
1249         kfree(mixer);
1250         return 0;
1251 }
1252
1253 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1254 {
1255         snd_mixer_oss_t *mixer;
1256
1257         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1258                 char name[128];
1259                 int idx, err;
1260
1261                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1262                 if (mixer == NULL)
1263                         return -ENOMEM;
1264                 init_MUTEX(&mixer->reg_mutex);
1265                 sprintf(name, "mixer%i%i", card->number, 0);
1266                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1267                                                    card, 0,
1268                                                    &snd_mixer_oss_reg,
1269                                                    name)) < 0) {
1270                         snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0);
1271                         kfree(mixer);
1272                         return err;
1273                 }
1274                 mixer->oss_dev_alloc = 1;
1275                 mixer->card = card;
1276                 if (*card->mixername)
1277                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1278                 else
1279                         strlcpy(mixer->name, name, sizeof(mixer->name));
1280 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1281                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1282                                       card->number,
1283                                       mixer->name);
1284 #endif
1285                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1286                         mixer->slots[idx].number = idx;
1287                 card->mixer_oss = mixer;
1288                 snd_mixer_oss_build(mixer);
1289                 snd_mixer_oss_proc_init(mixer);
1290         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1291                 mixer = card->mixer_oss;
1292                 if (mixer == NULL || !mixer->oss_dev_alloc)
1293                         return 0;
1294                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1295                 mixer->oss_dev_alloc = 0;
1296         } else {                /* free */
1297                 mixer = card->mixer_oss;
1298                 if (mixer == NULL)
1299                         return 0;
1300 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1301                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1302 #endif
1303                 if (mixer->oss_dev_alloc)
1304                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1305                 snd_mixer_oss_proc_done(mixer);
1306                 return snd_mixer_oss_free1(mixer);
1307         }
1308         return 0;
1309 }
1310
1311 static int __init alsa_mixer_oss_init(void)
1312 {
1313         int idx;
1314
1315         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1316         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1317                 if (snd_cards[idx])
1318                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1319         }
1320         return 0;
1321 }
1322
1323 static void __exit alsa_mixer_oss_exit(void)
1324 {
1325         int idx;
1326
1327         snd_mixer_oss_notify_callback = NULL;
1328         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1329                 if (snd_cards[idx])
1330                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1331         }
1332 }
1333
1334 module_init(alsa_mixer_oss_init)
1335 module_exit(alsa_mixer_oss_exit)
1336
1337 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);