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