git.oblomov.eu Git - linux-2.6/blob - sound/core/seq/seq_instr.c

   1 /*
   2  *   Generic Instrument routines for ALSA sequencer
   3  *   Copyright (c) 1999 by Jaroslav Kysela <perex@suse.cz>
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program; if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  */
  20
  21 #include <sound/driver.h>
  22 #include <linux/init.h>
  23 #include <linux/slab.h>
  24 #include <sound/core.h>
  25 #include "seq_clientmgr.h"
  26 #include <sound/seq_instr.h>
  27 #include <sound/initval.h>
  28
  29 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  30 MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer instrument library.");
  31 MODULE_LICENSE("GPL");
  32
  33
  34 static void snd_instr_lock_ops(struct snd_seq_kinstr_list *list)
  35 {
  36         if (!(list->flags & SNDRV_SEQ_INSTR_FLG_DIRECT)) {
  37                 spin_lock_irqsave(&list->ops_lock, list->ops_flags);
  38         } else {
  39                 mutex_lock(&list->ops_mutex);
  40         }
  41 }
  42
  43 static void snd_instr_unlock_ops(struct snd_seq_kinstr_list *list)
  44 {
  45         if (!(list->flags & SNDRV_SEQ_INSTR_FLG_DIRECT)) {
  46                 spin_unlock_irqrestore(&list->ops_lock, list->ops_flags);
  47         } else {
  48                 mutex_unlock(&list->ops_mutex);
  49         }
  50 }
  51
  52 static struct snd_seq_kinstr *snd_seq_instr_new(int add_len, int atomic)
  53 {
  54         struct snd_seq_kinstr *instr;
  55
  56         instr = kzalloc(sizeof(struct snd_seq_kinstr) + add_len, atomic ? GFP_ATOMIC : GFP_KERNEL);
  57         if (instr == NULL)
  58                 return NULL;
  59         instr->add_len = add_len;
  60         return instr;
  61 }
  62
  63 static int snd_seq_instr_free(struct snd_seq_kinstr *instr, int atomic)
  64 {
  65         int result = 0;
  66
  67         if (instr == NULL)
  68                 return -EINVAL;
  69         if (instr->ops && instr->ops->remove)
  70                 result = instr->ops->remove(instr->ops->private_data, instr, 1);
  71         if (!result)
  72                 kfree(instr);
  73         return result;
  74 }
  75
  76 struct snd_seq_kinstr_list *snd_seq_instr_list_new(void)
  77 {
  78         struct snd_seq_kinstr_list *list;
  79
  80         list = kzalloc(sizeof(struct snd_seq_kinstr_list), GFP_KERNEL);
  81         if (list == NULL)
  82                 return NULL;
  83         spin_lock_init(&list->lock);
  84         spin_lock_init(&list->ops_lock);
  85         mutex_init(&list->ops_mutex);
  86         list->owner = -1;
  87         return list;
  88 }
  89
  90 void snd_seq_instr_list_free(struct snd_seq_kinstr_list **list_ptr)
  91 {
  92         struct snd_seq_kinstr_list *list;
  93         struct snd_seq_kinstr *instr;
  94         struct snd_seq_kcluster *cluster;
  95         int idx;
  96         unsigned long flags;
  97
  98         if (list_ptr == NULL)
  99                 return;
 100         list = *list_ptr;
 101         *list_ptr = NULL;
 102         if (list == NULL)
 103                 return;
 104
 105         for (idx = 0; idx < SNDRV_SEQ_INSTR_HASH_SIZE; idx++) {
 106                 while ((instr = list->hash[idx]) != NULL) {
 107                         list->hash[idx] = instr->next;
 108                         list->count--;
 109                         spin_lock_irqsave(&list->lock, flags);
 110                         while (instr->use) {
 111                                 spin_unlock_irqrestore(&list->lock, flags);
 112                                 schedule_timeout_interruptible(1);
 113                                 spin_lock_irqsave(&list->lock, flags);
 114                         }
 115                         spin_unlock_irqrestore(&list->lock, flags);
 116                         if (snd_seq_instr_free(instr, 0)<0)
 117                                 snd_printk(KERN_WARNING "instrument free problem\n");
 118                 }
 119                 while ((cluster = list->chash[idx]) != NULL) {
 120                         list->chash[idx] = cluster->next;
 121                         list->ccount--;
 122                         kfree(cluster);
 123                 }
 124         }
 125         kfree(list);
 126 }
 127
 128 static int instr_free_compare(struct snd_seq_kinstr *instr,
 129                               struct snd_seq_instr_header *ifree,
 130                               unsigned int client)
 131 {
 132         switch (ifree->cmd) {
 133         case SNDRV_SEQ_INSTR_FREE_CMD_ALL:
 134                 /* all, except private for other clients */
 135                 if ((instr->instr.std & 0xff000000) == 0)
 136                         return 0;
 137                 if (((instr->instr.std >> 24) & 0xff) == client)
 138                         return 0;
 139                 return 1;
 140         case SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE:
 141                 /* all my private instruments */
 142                 if ((instr->instr.std & 0xff000000) == 0)
 143                         return 1;
 144                 if (((instr->instr.std >> 24) & 0xff) == client)
 145                         return 0;
 146                 return 1;
 147         case SNDRV_SEQ_INSTR_FREE_CMD_CLUSTER:
 148                 /* all my private instruments */
 149                 if ((instr->instr.std & 0xff000000) == 0) {
 150                         if (instr->instr.cluster == ifree->id.cluster)
 151                                 return 0;
 152                         return 1;
 153                 }
 154                 if (((instr->instr.std >> 24) & 0xff) == client) {
 155                         if (instr->instr.cluster == ifree->id.cluster)
 156                                 return 0;
 157                 }
 158                 return 1;
 159         }
 160         return 1;
 161 }
 162
 163 int snd_seq_instr_list_free_cond(struct snd_seq_kinstr_list *list,
 164                                  struct snd_seq_instr_header *ifree,
 165                                  int client,
 166                                  int atomic)
 167 {
 168         struct snd_seq_kinstr *instr, *prev, *next, *flist;
 169         int idx;
 170         unsigned long flags;
 171
 172         snd_instr_lock_ops(list);
 173         for (idx = 0; idx < SNDRV_SEQ_INSTR_HASH_SIZE; idx++) {
 174                 spin_lock_irqsave(&list->lock, flags);
 175                 instr = list->hash[idx];
 176                 prev = flist = NULL;
 177                 while (instr) {
 178                         while (instr && instr_free_compare(instr, ifree, (unsigned int)client)) {
 179                                 prev = instr;
 180                                 instr = instr->next;
 181                         }
 182                         if (instr == NULL)
 183                                 continue;
 184                         if (instr->ops && instr->ops->notify)
 185                                 instr->ops->notify(instr->ops->private_data, instr, SNDRV_SEQ_INSTR_NOTIFY_REMOVE);
 186                         next = instr->next;
 187                         if (prev == NULL) {
 188                                 list->hash[idx] = next;
 189                         } else {
 190                                 prev->next = next;
 191                         }
 192                         list->count--;
 193                         instr->next = flist;
 194                         flist = instr;
 195                         instr = next;
 196                 }
 197                 spin_unlock_irqrestore(&list->lock, flags);
 198                 while (flist) {
 199                         instr = flist;
 200                         flist = instr->next;
 201                         while (instr->use)
 202                                 schedule_timeout_interruptible(1);
 203                         if (snd_seq_instr_free(instr, atomic)<0)
 204                                 snd_printk(KERN_WARNING "instrument free problem\n");
 205                         instr = next;
 206                 }
 207         }
 208         snd_instr_unlock_ops(list);
 209         return 0;
 210 }
 211
 212 static int compute_hash_instr_key(struct snd_seq_instr *instr)
 213 {
 214         int result;
 215
 216         result = instr->bank | (instr->prg << 16);
 217         result += result >> 24;
 218         result += result >> 16;
 219         result += result >> 8;
 220         return result & (SNDRV_SEQ_INSTR_HASH_SIZE-1);
 221 }
 222
 223 #if 0
 224 static int compute_hash_cluster_key(snd_seq_instr_cluster_t cluster)
 225 {
 226         int result;
 227
 228         result = cluster;
 229         result += result >> 24;
 230         result += result >> 16;
 231         result += result >> 8;
 232         return result & (SNDRV_SEQ_INSTR_HASH_SIZE-1);
 233 }
 234 #endif
 235
 236 static int compare_instr(struct snd_seq_instr *i1, struct snd_seq_instr *i2, int exact)
 237 {
 238         if (exact) {
 239                 if (i1->cluster != i2->cluster ||
 240                     i1->bank != i2->bank ||
 241                     i1->prg != i2->prg)
 242                         return 1;
 243                 if ((i1->std & 0xff000000) != (i2->std & 0xff000000))
 244                         return 1;
 245                 if (!(i1->std & i2->std))
 246                         return 1;
 247                 return 0;
 248         } else {
 249                 unsigned int client_check;
 250
 251                 if (i2->cluster && i1->cluster != i2->cluster)
 252                         return 1;
 253                 client_check = i2->std & 0xff000000;
 254                 if (client_check) {
 255                         if ((i1->std & 0xff000000) != client_check)
 256                                 return 1;
 257                 } else {
 258                         if ((i1->std & i2->std) != i2->std)
 259                                 return 1;
 260                 }
 261                 return i1->bank != i2->bank || i1->prg != i2->prg;
 262         }
 263 }
 264
 265 struct snd_seq_kinstr *snd_seq_instr_find(struct snd_seq_kinstr_list *list,
 266                                           struct snd_seq_instr *instr,
 267                                           int exact,
 268                                           int follow_alias)
 269 {
 270         unsigned long flags;
 271         int depth = 0;
 272         struct snd_seq_kinstr *result;
 273
 274         if (list == NULL || instr == NULL)
 275                 return NULL;
 276         spin_lock_irqsave(&list->lock, flags);
 277       __again:
 278         result = list->hash[compute_hash_instr_key(instr)];
 279         while (result) {
 280                 if (!compare_instr(&result->instr, instr, exact)) {
 281                         if (follow_alias && (result->type == SNDRV_SEQ_INSTR_ATYPE_ALIAS)) {
 282                                 instr = (struct snd_seq_instr *)KINSTR_DATA(result);
 283                                 if (++depth > 10)
 284                                         goto __not_found;
 285                                 goto __again;
 286                         }
 287                         result->use++;
 288                         spin_unlock_irqrestore(&list->lock, flags);
 289                         return result;
 290                 }
 291                 result = result->next;
 292         }
 293       __not_found:
 294         spin_unlock_irqrestore(&list->lock, flags);
 295         return NULL;
 296 }
 297
 298 void snd_seq_instr_free_use(struct snd_seq_kinstr_list *list,
 299                             struct snd_seq_kinstr *instr)
 300 {
 301         unsigned long flags;
 302
 303         if (list == NULL || instr == NULL)
 304                 return;
 305         spin_lock_irqsave(&list->lock, flags);
 306         if (instr->use <= 0) {
 307                 snd_printk(KERN_ERR "free_use: fatal!!! use = %i, name = '%s'\n", instr->use, instr->name);
 308         } else {
 309                 instr->use--;
 310         }
 311         spin_unlock_irqrestore(&list->lock, flags);
 312 }
 313
 314 static struct snd_seq_kinstr_ops *instr_ops(struct snd_seq_kinstr_ops *ops,
 315                                             char *instr_type)
 316 {
 317         while (ops) {
 318                 if (!strcmp(ops->instr_type, instr_type))
 319                         return ops;
 320                 ops = ops->next;
 321         }
 322         return NULL;
 323 }
 324
 325 static int instr_result(struct snd_seq_event *ev,
 326                         int type, int result,
 327                         int atomic)
 328 {
 329         struct snd_seq_event sev;
 330
 331         memset(&sev, 0, sizeof(sev));
 332         sev.type = SNDRV_SEQ_EVENT_RESULT;
 333         sev.flags = SNDRV_SEQ_TIME_STAMP_REAL | SNDRV_SEQ_EVENT_LENGTH_FIXED |
 334                     SNDRV_SEQ_PRIORITY_NORMAL;
 335         sev.source = ev->dest;
 336         sev.dest = ev->source;
 337         sev.data.result.event = type;
 338         sev.data.result.result = result;
 339 #if 0
 340         printk("instr result - type = %i, result = %i, queue = %i, source.client:port = %i:%i, dest.client:port = %i:%i\n",
 341                                 type, result,
 342                                 sev.queue,
 343                                 sev.source.client, sev.source.port,
 344                                 sev.dest.client, sev.dest.port);
 345 #endif
 346         return snd_seq_kernel_client_dispatch(sev.source.client, &sev, atomic, 0);
 347 }
 348
 349 static int instr_begin(struct snd_seq_kinstr_ops *ops,
 350                        struct snd_seq_kinstr_list *list,
 351                        struct snd_seq_event *ev,
 352                        int atomic, int hop)
 353 {
 354         unsigned long flags;
 355
 356         spin_lock_irqsave(&list->lock, flags);
 357         if (list->owner >= 0 && list->owner != ev->source.client) {
 358                 spin_unlock_irqrestore(&list->lock, flags);
 359                 return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_BEGIN, -EBUSY, atomic);
 360         }
 361         list->owner = ev->source.client;
 362         spin_unlock_irqrestore(&list->lock, flags);
 363         return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_BEGIN, 0, atomic);
 364 }
 365
 366 static int instr_end(struct snd_seq_kinstr_ops *ops,
 367                      struct snd_seq_kinstr_list *list,
 368                      struct snd_seq_event *ev,
 369                      int atomic, int hop)
 370 {
 371         unsigned long flags;
 372
 373         /* TODO: timeout handling */
 374         spin_lock_irqsave(&list->lock, flags);
 375         if (list->owner == ev->source.client) {
 376                 list->owner = -1;
 377                 spin_unlock_irqrestore(&list->lock, flags);
 378                 return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_END, 0, atomic);
 379         }
 380         spin_unlock_irqrestore(&list->lock, flags);
 381         return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_END, -EINVAL, atomic);
 382 }
 383
 384 static int instr_info(struct snd_seq_kinstr_ops *ops,
 385                       struct snd_seq_kinstr_list *list,
 386                       struct snd_seq_event *ev,
 387                       int atomic, int hop)
 388 {
 389         return -ENXIO;
 390 }
 391
 392 static int instr_format_info(struct snd_seq_kinstr_ops *ops,
 393                              struct snd_seq_kinstr_list *list,
 394                              struct snd_seq_event *ev,
 395                              int atomic, int hop)
 396 {
 397         return -ENXIO;
 398 }
 399
 400 static int instr_reset(struct snd_seq_kinstr_ops *ops,
 401                        struct snd_seq_kinstr_list *list,
 402                        struct snd_seq_event *ev,
 403                        int atomic, int hop)
 404 {
 405         return -ENXIO;
 406 }
 407
 408 static int instr_status(struct snd_seq_kinstr_ops *ops,
 409                         struct snd_seq_kinstr_list *list,
 410                         struct snd_seq_event *ev,
 411                         int atomic, int hop)
 412 {
 413         return -ENXIO;
 414 }
 415
 416 static int instr_put(struct snd_seq_kinstr_ops *ops,
 417                      struct snd_seq_kinstr_list *list,
 418                      struct snd_seq_event *ev,
 419                      int atomic, int hop)
 420 {
 421         unsigned long flags;
 422         struct snd_seq_instr_header put;
 423         struct snd_seq_kinstr *instr;
 424         int result = -EINVAL, len, key;
 425
 426         if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARUSR)
 427                 goto __return;
 428
 429         if (ev->data.ext.len < sizeof(struct snd_seq_instr_header))
 430                 goto __return;
 431         if (copy_from_user(&put, (void __user *)ev->data.ext.ptr,
 432                            sizeof(struct snd_seq_instr_header))) {
 433                 result = -EFAULT;
 434                 goto __return;
 435         }
 436         snd_instr_lock_ops(list);
 437         if (put.id.instr.std & 0xff000000) {    /* private instrument */
 438                 put.id.instr.std &= 0x00ffffff;
 439                 put.id.instr.std |= (unsigned int)ev->source.client << 24;
 440         }
 441         if ((instr = snd_seq_instr_find(list, &put.id.instr, 1, 0))) {
 442                 snd_seq_instr_free_use(list, instr);
 443                 snd_instr_unlock_ops(list);
 444                 result = -EBUSY;
 445                 goto __return;
 446         }
 447         ops = instr_ops(ops, put.data.data.format);
 448         if (ops == NULL) {
 449                 snd_instr_unlock_ops(list);
 450                 goto __return;
 451         }
 452         len = ops->add_len;
 453         if (put.data.type == SNDRV_SEQ_INSTR_ATYPE_ALIAS)
 454                 len = sizeof(struct snd_seq_instr);
 455         instr = snd_seq_instr_new(len, atomic);
 456         if (instr == NULL) {
 457                 snd_instr_unlock_ops(list);
 458                 result = -ENOMEM;
 459                 goto __return;
 460         }
 461         instr->ops = ops;
 462         instr->instr = put.id.instr;
 463         strlcpy(instr->name, put.data.name, sizeof(instr->name));
 464         instr->type = put.data.type;
 465         if (instr->type == SNDRV_SEQ_INSTR_ATYPE_DATA) {
 466                 result = ops->put(ops->private_data,
 467                                   instr,
 468                                   (void __user *)ev->data.ext.ptr + sizeof(struct snd_seq_instr_header),
 469                                   ev->data.ext.len - sizeof(struct snd_seq_instr_header),
 470                                   atomic,
 471                                   put.cmd);
 472                 if (result < 0) {
 473                         snd_seq_instr_free(instr, atomic);
 474                         snd_instr_unlock_ops(list);
 475                         goto __return;
 476                 }
 477         }
 478         key = compute_hash_instr_key(&instr->instr);
 479         spin_lock_irqsave(&list->lock, flags);
 480         instr->next = list->hash[key];
 481         list->hash[key] = instr;
 482         list->count++;
 483         spin_unlock_irqrestore(&list->lock, flags);
 484         snd_instr_unlock_ops(list);
 485         result = 0;
 486       __return:
 487         instr_result(ev, SNDRV_SEQ_EVENT_INSTR_PUT, result, atomic);
 488         return result;
 489 }
 490
 491 static int instr_get(struct snd_seq_kinstr_ops *ops,
 492                      struct snd_seq_kinstr_list *list,
 493                      struct snd_seq_event *ev,
 494                      int atomic, int hop)
 495 {
 496         return -ENXIO;
 497 }
 498
 499 static int instr_free(struct snd_seq_kinstr_ops *ops,
 500                       struct snd_seq_kinstr_list *list,
 501                       struct snd_seq_event *ev,
 502                       int atomic, int hop)
 503 {
 504         struct snd_seq_instr_header ifree;
 505         struct snd_seq_kinstr *instr, *prev;
 506         int result = -EINVAL;
 507         unsigned long flags;
 508         unsigned int hash;
 509
 510         if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARUSR)
 511                 goto __return;
 512
 513         if (ev->data.ext.len < sizeof(struct snd_seq_instr_header))
 514                 goto __return;
 515         if (copy_from_user(&ifree, (void __user *)ev->data.ext.ptr,
 516                            sizeof(struct snd_seq_instr_header))) {
 517                 result = -EFAULT;
 518                 goto __return;
 519         }
 520         if (ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_ALL ||
 521             ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE ||
 522             ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_CLUSTER) {
 523                 result = snd_seq_instr_list_free_cond(list, &ifree, ev->dest.client, atomic);
 524                 goto __return;
 525         }
 526         if (ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_SINGLE) {
 527                 if (ifree.id.instr.std & 0xff000000) {
 528                         ifree.id.instr.std &= 0x00ffffff;
 529                         ifree.id.instr.std |= (unsigned int)ev->source.client << 24;
 530                 }
 531                 hash = compute_hash_instr_key(&ifree.id.instr);
 532                 snd_instr_lock_ops(list);
 533                 spin_lock_irqsave(&list->lock, flags);
 534                 instr = list->hash[hash];
 535                 prev = NULL;
 536                 while (instr) {
 537                         if (!compare_instr(&instr->instr, &ifree.id.instr, 1))
 538                                 goto __free_single;
 539                         prev = instr;
 540                         instr = instr->next;
 541                 }
 542                 result = -ENOENT;
 543                 spin_unlock_irqrestore(&list->lock, flags);
 544                 snd_instr_unlock_ops(list);
 545                 goto __return;
 546
 547               __free_single:
 548                 if (prev) {
 549                         prev->next = instr->next;
 550                 } else {
 551                         list->hash[hash] = instr->next;
 552                 }
 553                 if (instr->ops && instr->ops->notify)
 554                         instr->ops->notify(instr->ops->private_data, instr,
 555                                            SNDRV_SEQ_INSTR_NOTIFY_REMOVE);
 556                 while (instr->use) {
 557                         spin_unlock_irqrestore(&list->lock, flags);
 558                         schedule_timeout_interruptible(1);
 559                         spin_lock_irqsave(&list->lock, flags);
 560                 }
 561                 spin_unlock_irqrestore(&list->lock, flags);
 562                 result = snd_seq_instr_free(instr, atomic);
 563                 snd_instr_unlock_ops(list);
 564                 goto __return;
 565         }
 566
 567       __return:
 568         instr_result(ev, SNDRV_SEQ_EVENT_INSTR_FREE, result, atomic);
 569         return result;
 570 }
 571
 572 static int instr_list(struct snd_seq_kinstr_ops *ops,
 573                       struct snd_seq_kinstr_list *list,
 574                       struct snd_seq_event *ev,
 575                       int atomic, int hop)
 576 {
 577         return -ENXIO;
 578 }
 579
 580 static int instr_cluster(struct snd_seq_kinstr_ops *ops,
 581                          struct snd_seq_kinstr_list *list,
 582                          struct snd_seq_event *ev,
 583                          int atomic, int hop)
 584 {
 585         return -ENXIO;
 586 }
 587
 588 int snd_seq_instr_event(struct snd_seq_kinstr_ops *ops,
 589                         struct snd_seq_kinstr_list *list,
 590                         struct snd_seq_event *ev,
 591                         int client,
 592                         int atomic,
 593                         int hop)
 594 {
 595         int direct = 0;
 596
 597         snd_assert(ops != NULL && list != NULL && ev != NULL, return -EINVAL);
 598         if (snd_seq_ev_is_direct(ev)) {
 599                 direct = 1;
 600                 switch (ev->type) {
 601                 case SNDRV_SEQ_EVENT_INSTR_BEGIN:
 602                         return instr_begin(ops, list, ev, atomic, hop);
 603                 case SNDRV_SEQ_EVENT_INSTR_END:
 604                         return instr_end(ops, list, ev, atomic, hop);
 605                 }
 606         }
 607         if ((list->flags & SNDRV_SEQ_INSTR_FLG_DIRECT) && !direct)
 608                 return -EINVAL;
 609         switch (ev->type) {
 610         case SNDRV_SEQ_EVENT_INSTR_INFO:
 611                 return instr_info(ops, list, ev, atomic, hop);
 612         case SNDRV_SEQ_EVENT_INSTR_FINFO:
 613                 return instr_format_info(ops, list, ev, atomic, hop);
 614         case SNDRV_SEQ_EVENT_INSTR_RESET:
 615                 return instr_reset(ops, list, ev, atomic, hop);
 616         case SNDRV_SEQ_EVENT_INSTR_STATUS:
 617                 return instr_status(ops, list, ev, atomic, hop);
 618         case SNDRV_SEQ_EVENT_INSTR_PUT:
 619                 return instr_put(ops, list, ev, atomic, hop);
 620         case SNDRV_SEQ_EVENT_INSTR_GET:
 621                 return instr_get(ops, list, ev, atomic, hop);
 622         case SNDRV_SEQ_EVENT_INSTR_FREE:
 623                 return instr_free(ops, list, ev, atomic, hop);
 624         case SNDRV_SEQ_EVENT_INSTR_LIST:
 625                 return instr_list(ops, list, ev, atomic, hop);
 626         case SNDRV_SEQ_EVENT_INSTR_CLUSTER:
 627                 return instr_cluster(ops, list, ev, atomic, hop);
 628         }
 629         return -EINVAL;
 630 }
 631
 632 /*
 633  *  Init part
 634  */
 635
 636 static int __init alsa_seq_instr_init(void)
 637 {
 638         return 0;
 639 }
 640
 641 static void __exit alsa_seq_instr_exit(void)
 642 {
 643 }
 644
 645 module_init(alsa_seq_instr_init)
 646 module_exit(alsa_seq_instr_exit)
 647
 648 EXPORT_SYMBOL(snd_seq_instr_list_new);
 649 EXPORT_SYMBOL(snd_seq_instr_list_free);
 650 EXPORT_SYMBOL(snd_seq_instr_list_free_cond);
 651 EXPORT_SYMBOL(snd_seq_instr_find);
 652 EXPORT_SYMBOL(snd_seq_instr_free_use);
 653 EXPORT_SYMBOL(snd_seq_instr_event);