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_uninterruptible(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_uninterruptible(1);
 203                                 barrier();
 204                         }
 205                         if (snd_seq_instr_free(instr, atomic)<0)
 206                                 snd_printk(KERN_WARNING "instrument free problem\n");
 207                         instr = next;
 208                 }
 209         }
 210         snd_instr_unlock_ops(list);
 211         return 0;
 212 }
 213
 214 static int compute_hash_instr_key(struct snd_seq_instr *instr)
 215 {
 216         int result;
 217
 218         result = instr->bank | (instr->prg << 16);
 219         result += result >> 24;
 220         result += result >> 16;
 221         result += result >> 8;
 222         return result & (SNDRV_SEQ_INSTR_HASH_SIZE-1);
 223 }
 224
 225 #if 0
 226 static int compute_hash_cluster_key(snd_seq_instr_cluster_t cluster)
 227 {
 228         int result;
 229
 230         result = cluster;
 231         result += result >> 24;
 232         result += result >> 16;
 233         result += result >> 8;
 234         return result & (SNDRV_SEQ_INSTR_HASH_SIZE-1);
 235 }
 236 #endif
 237
 238 static int compare_instr(struct snd_seq_instr *i1, struct snd_seq_instr *i2, int exact)
 239 {
 240         if (exact) {
 241                 if (i1->cluster != i2->cluster ||
 242                     i1->bank != i2->bank ||
 243                     i1->prg != i2->prg)
 244                         return 1;
 245                 if ((i1->std & 0xff000000) != (i2->std & 0xff000000))
 246                         return 1;
 247                 if (!(i1->std & i2->std))
 248                         return 1;
 249                 return 0;
 250         } else {
 251                 unsigned int client_check;
 252
 253                 if (i2->cluster && i1->cluster != i2->cluster)
 254                         return 1;
 255                 client_check = i2->std & 0xff000000;
 256                 if (client_check) {
 257                         if ((i1->std & 0xff000000) != client_check)
 258                                 return 1;
 259                 } else {
 260                         if ((i1->std & i2->std) != i2->std)
 261                                 return 1;
 262                 }
 263                 return i1->bank != i2->bank || i1->prg != i2->prg;
 264         }
 265 }
 266
 267 struct snd_seq_kinstr *snd_seq_instr_find(struct snd_seq_kinstr_list *list,
 268                                           struct snd_seq_instr *instr,
 269                                           int exact,
 270                                           int follow_alias)
 271 {
 272         unsigned long flags;
 273         int depth = 0;
 274         struct snd_seq_kinstr *result;
 275
 276         if (list == NULL || instr == NULL)
 277                 return NULL;
 278         spin_lock_irqsave(&list->lock, flags);
 279       __again:
 280         result = list->hash[compute_hash_instr_key(instr)];
 281         while (result) {
 282                 if (!compare_instr(&result->instr, instr, exact)) {
 283                         if (follow_alias && (result->type == SNDRV_SEQ_INSTR_ATYPE_ALIAS)) {
 284                                 instr = (struct snd_seq_instr *)KINSTR_DATA(result);
 285                                 if (++depth > 10)
 286                                         goto __not_found;
 287                                 goto __again;
 288                         }
 289                         result->use++;
 290                         spin_unlock_irqrestore(&list->lock, flags);
 291                         return result;
 292                 }
 293                 result = result->next;
 294         }
 295       __not_found:
 296         spin_unlock_irqrestore(&list->lock, flags);
 297         return NULL;
 298 }
 299
 300 void snd_seq_instr_free_use(struct snd_seq_kinstr_list *list,
 301                             struct snd_seq_kinstr *instr)
 302 {
 303         unsigned long flags;
 304
 305         if (list == NULL || instr == NULL)
 306                 return;
 307         spin_lock_irqsave(&list->lock, flags);
 308         if (instr->use <= 0) {
 309                 snd_printk(KERN_ERR "free_use: fatal!!! use = %i, name = '%s'\n", instr->use, instr->name);
 310         } else {
 311                 instr->use--;
 312         }
 313         spin_unlock_irqrestore(&list->lock, flags);
 314 }
 315
 316 static struct snd_seq_kinstr_ops *instr_ops(struct snd_seq_kinstr_ops *ops,
 317                                             char *instr_type)
 318 {
 319         while (ops) {
 320                 if (!strcmp(ops->instr_type, instr_type))
 321                         return ops;
 322                 ops = ops->next;
 323         }
 324         return NULL;
 325 }
 326
 327 static int instr_result(struct snd_seq_event *ev,
 328                         int type, int result,
 329                         int atomic)
 330 {
 331         struct snd_seq_event sev;
 332
 333         memset(&sev, 0, sizeof(sev));
 334         sev.type = SNDRV_SEQ_EVENT_RESULT;
 335         sev.flags = SNDRV_SEQ_TIME_STAMP_REAL | SNDRV_SEQ_EVENT_LENGTH_FIXED |
 336                     SNDRV_SEQ_PRIORITY_NORMAL;
 337         sev.source = ev->dest;
 338         sev.dest = ev->source;
 339         sev.data.result.event = type;
 340         sev.data.result.result = result;
 341 #if 0
 342         printk("instr result - type = %i, result = %i, queue = %i, source.client:port = %i:%i, dest.client:port = %i:%i\n",
 343                                 type, result,
 344                                 sev.queue,
 345                                 sev.source.client, sev.source.port,
 346                                 sev.dest.client, sev.dest.port);
 347 #endif
 348         return snd_seq_kernel_client_dispatch(sev.source.client, &sev, atomic, 0);
 349 }
 350
 351 static int instr_begin(struct snd_seq_kinstr_ops *ops,
 352                        struct snd_seq_kinstr_list *list,
 353                        struct snd_seq_event *ev,
 354                        int atomic, int hop)
 355 {
 356         unsigned long flags;
 357
 358         spin_lock_irqsave(&list->lock, flags);
 359         if (list->owner >= 0 && list->owner != ev->source.client) {
 360                 spin_unlock_irqrestore(&list->lock, flags);
 361                 return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_BEGIN, -EBUSY, atomic);
 362         }
 363         list->owner = ev->source.client;
 364         spin_unlock_irqrestore(&list->lock, flags);
 365         return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_BEGIN, 0, atomic);
 366 }
 367
 368 static int instr_end(struct snd_seq_kinstr_ops *ops,
 369                      struct snd_seq_kinstr_list *list,
 370                      struct snd_seq_event *ev,
 371                      int atomic, int hop)
 372 {
 373         unsigned long flags;
 374
 375         /* TODO: timeout handling */
 376         spin_lock_irqsave(&list->lock, flags);
 377         if (list->owner == ev->source.client) {
 378                 list->owner = -1;
 379                 spin_unlock_irqrestore(&list->lock, flags);
 380                 return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_END, 0, atomic);
 381         }
 382         spin_unlock_irqrestore(&list->lock, flags);
 383         return instr_result(ev, SNDRV_SEQ_EVENT_INSTR_END, -EINVAL, atomic);
 384 }
 385
 386 static int instr_info(struct snd_seq_kinstr_ops *ops,
 387                       struct snd_seq_kinstr_list *list,
 388                       struct snd_seq_event *ev,
 389                       int atomic, int hop)
 390 {
 391         return -ENXIO;
 392 }
 393
 394 static int instr_format_info(struct snd_seq_kinstr_ops *ops,
 395                              struct snd_seq_kinstr_list *list,
 396                              struct snd_seq_event *ev,
 397                              int atomic, int hop)
 398 {
 399         return -ENXIO;
 400 }
 401
 402 static int instr_reset(struct snd_seq_kinstr_ops *ops,
 403                        struct snd_seq_kinstr_list *list,
 404                        struct snd_seq_event *ev,
 405                        int atomic, int hop)
 406 {
 407         return -ENXIO;
 408 }
 409
 410 static int instr_status(struct snd_seq_kinstr_ops *ops,
 411                         struct snd_seq_kinstr_list *list,
 412                         struct snd_seq_event *ev,
 413                         int atomic, int hop)
 414 {
 415         return -ENXIO;
 416 }
 417
 418 static int instr_put(struct snd_seq_kinstr_ops *ops,
 419                      struct snd_seq_kinstr_list *list,
 420                      struct snd_seq_event *ev,
 421                      int atomic, int hop)
 422 {
 423         unsigned long flags;
 424         struct snd_seq_instr_header put;
 425         struct snd_seq_kinstr *instr;
 426         int result = -EINVAL, len, key;
 427
 428         if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARUSR)
 429                 goto __return;
 430
 431         if (ev->data.ext.len < sizeof(struct snd_seq_instr_header))
 432                 goto __return;
 433         if (copy_from_user(&put, (void __user *)ev->data.ext.ptr,
 434                            sizeof(struct snd_seq_instr_header))) {
 435                 result = -EFAULT;
 436                 goto __return;
 437         }
 438         snd_instr_lock_ops(list);
 439         if (put.id.instr.std & 0xff000000) {    /* private instrument */
 440                 put.id.instr.std &= 0x00ffffff;
 441                 put.id.instr.std |= (unsigned int)ev->source.client << 24;
 442         }
 443         if ((instr = snd_seq_instr_find(list, &put.id.instr, 1, 0))) {
 444                 snd_seq_instr_free_use(list, instr);
 445                 snd_instr_unlock_ops(list);
 446                 result = -EBUSY;
 447                 goto __return;
 448         }
 449         ops = instr_ops(ops, put.data.data.format);
 450         if (ops == NULL) {
 451                 snd_instr_unlock_ops(list);
 452                 goto __return;
 453         }
 454         len = ops->add_len;
 455         if (put.data.type == SNDRV_SEQ_INSTR_ATYPE_ALIAS)
 456                 len = sizeof(struct snd_seq_instr);
 457         instr = snd_seq_instr_new(len, atomic);
 458         if (instr == NULL) {
 459                 snd_instr_unlock_ops(list);
 460                 result = -ENOMEM;
 461                 goto __return;
 462         }
 463         instr->ops = ops;
 464         instr->instr = put.id.instr;
 465         strlcpy(instr->name, put.data.name, sizeof(instr->name));
 466         instr->type = put.data.type;
 467         if (instr->type == SNDRV_SEQ_INSTR_ATYPE_DATA) {
 468                 result = ops->put(ops->private_data,
 469                                   instr,
 470                                   (void __user *)ev->data.ext.ptr + sizeof(struct snd_seq_instr_header),
 471                                   ev->data.ext.len - sizeof(struct snd_seq_instr_header),
 472                                   atomic,
 473                                   put.cmd);
 474                 if (result < 0) {
 475                         snd_seq_instr_free(instr, atomic);
 476                         snd_instr_unlock_ops(list);
 477                         goto __return;
 478                 }
 479         }
 480         key = compute_hash_instr_key(&instr->instr);
 481         spin_lock_irqsave(&list->lock, flags);
 482         instr->next = list->hash[key];
 483         list->hash[key] = instr;
 484         list->count++;
 485         spin_unlock_irqrestore(&list->lock, flags);
 486         snd_instr_unlock_ops(list);
 487         result = 0;
 488       __return:
 489         instr_result(ev, SNDRV_SEQ_EVENT_INSTR_PUT, result, atomic);
 490         return result;
 491 }
 492
 493 static int instr_get(struct snd_seq_kinstr_ops *ops,
 494                      struct snd_seq_kinstr_list *list,
 495                      struct snd_seq_event *ev,
 496                      int atomic, int hop)
 497 {
 498         return -ENXIO;
 499 }
 500
 501 static int instr_free(struct snd_seq_kinstr_ops *ops,
 502                       struct snd_seq_kinstr_list *list,
 503                       struct snd_seq_event *ev,
 504                       int atomic, int hop)
 505 {
 506         struct snd_seq_instr_header ifree;
 507         struct snd_seq_kinstr *instr, *prev;
 508         int result = -EINVAL;
 509         unsigned long flags;
 510         unsigned int hash;
 511
 512         if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARUSR)
 513                 goto __return;
 514
 515         if (ev->data.ext.len < sizeof(struct snd_seq_instr_header))
 516                 goto __return;
 517         if (copy_from_user(&ifree, (void __user *)ev->data.ext.ptr,
 518                            sizeof(struct snd_seq_instr_header))) {
 519                 result = -EFAULT;
 520                 goto __return;
 521         }
 522         if (ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_ALL ||
 523             ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE ||
 524             ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_CLUSTER) {
 525                 result = snd_seq_instr_list_free_cond(list, &ifree, ev->dest.client, atomic);
 526                 goto __return;
 527         }
 528         if (ifree.cmd == SNDRV_SEQ_INSTR_FREE_CMD_SINGLE) {
 529                 if (ifree.id.instr.std & 0xff000000) {
 530                         ifree.id.instr.std &= 0x00ffffff;
 531                         ifree.id.instr.std |= (unsigned int)ev->source.client << 24;
 532                 }
 533                 hash = compute_hash_instr_key(&ifree.id.instr);
 534                 snd_instr_lock_ops(list);
 535                 spin_lock_irqsave(&list->lock, flags);
 536                 instr = list->hash[hash];
 537                 prev = NULL;
 538                 while (instr) {
 539                         if (!compare_instr(&instr->instr, &ifree.id.instr, 1))
 540                                 goto __free_single;
 541                         prev = instr;
 542                         instr = instr->next;
 543                 }
 544                 result = -ENOENT;
 545                 spin_unlock_irqrestore(&list->lock, flags);
 546                 snd_instr_unlock_ops(list);
 547                 goto __return;
 548
 549               __free_single:
 550                 if (prev) {
 551                         prev->next = instr->next;
 552                 } else {
 553                         list->hash[hash] = instr->next;
 554                 }
 555                 if (instr->ops && instr->ops->notify)
 556                         instr->ops->notify(instr->ops->private_data, instr,
 557                                            SNDRV_SEQ_INSTR_NOTIFY_REMOVE);
 558                 while (instr->use) {
 559                         spin_unlock_irqrestore(&list->lock, flags);
 560                         schedule_timeout_uninterruptible(1);
 561                         spin_lock_irqsave(&list->lock, flags);
 562                 }
 563                 spin_unlock_irqrestore(&list->lock, flags);
 564                 result = snd_seq_instr_free(instr, atomic);
 565                 snd_instr_unlock_ops(list);
 566                 goto __return;
 567         }
 568
 569       __return:
 570         instr_result(ev, SNDRV_SEQ_EVENT_INSTR_FREE, result, atomic);
 571         return result;
 572 }
 573
 574 static int instr_list(struct snd_seq_kinstr_ops *ops,
 575                       struct snd_seq_kinstr_list *list,
 576                       struct snd_seq_event *ev,
 577                       int atomic, int hop)
 578 {
 579         return -ENXIO;
 580 }
 581
 582 static int instr_cluster(struct snd_seq_kinstr_ops *ops,
 583                          struct snd_seq_kinstr_list *list,
 584                          struct snd_seq_event *ev,
 585                          int atomic, int hop)
 586 {
 587         return -ENXIO;
 588 }
 589
 590 int snd_seq_instr_event(struct snd_seq_kinstr_ops *ops,
 591                         struct snd_seq_kinstr_list *list,
 592                         struct snd_seq_event *ev,
 593                         int client,
 594                         int atomic,
 595                         int hop)
 596 {
 597         int direct = 0;
 598
 599         snd_assert(ops != NULL && list != NULL && ev != NULL, return -EINVAL);
 600         if (snd_seq_ev_is_direct(ev)) {
 601                 direct = 1;
 602                 switch (ev->type) {
 603                 case SNDRV_SEQ_EVENT_INSTR_BEGIN:
 604                         return instr_begin(ops, list, ev, atomic, hop);
 605                 case SNDRV_SEQ_EVENT_INSTR_END:
 606                         return instr_end(ops, list, ev, atomic, hop);
 607                 }
 608         }
 609         if ((list->flags & SNDRV_SEQ_INSTR_FLG_DIRECT) && !direct)
 610                 return -EINVAL;
 611         switch (ev->type) {
 612         case SNDRV_SEQ_EVENT_INSTR_INFO:
 613                 return instr_info(ops, list, ev, atomic, hop);
 614         case SNDRV_SEQ_EVENT_INSTR_FINFO:
 615                 return instr_format_info(ops, list, ev, atomic, hop);
 616         case SNDRV_SEQ_EVENT_INSTR_RESET:
 617                 return instr_reset(ops, list, ev, atomic, hop);
 618         case SNDRV_SEQ_EVENT_INSTR_STATUS:
 619                 return instr_status(ops, list, ev, atomic, hop);
 620         case SNDRV_SEQ_EVENT_INSTR_PUT:
 621                 return instr_put(ops, list, ev, atomic, hop);
 622         case SNDRV_SEQ_EVENT_INSTR_GET:
 623                 return instr_get(ops, list, ev, atomic, hop);
 624         case SNDRV_SEQ_EVENT_INSTR_FREE:
 625                 return instr_free(ops, list, ev, atomic, hop);
 626         case SNDRV_SEQ_EVENT_INSTR_LIST:
 627                 return instr_list(ops, list, ev, atomic, hop);
 628         case SNDRV_SEQ_EVENT_INSTR_CLUSTER:
 629                 return instr_cluster(ops, list, ev, atomic, hop);
 630         }
 631         return -EINVAL;
 632 }
 633
 634 /*
 635  *  Init part
 636  */
 637
 638 static int __init alsa_seq_instr_init(void)
 639 {
 640         return 0;
 641 }
 642
 643 static void __exit alsa_seq_instr_exit(void)
 644 {
 645 }
 646
 647 module_init(alsa_seq_instr_init)
 648 module_exit(alsa_seq_instr_exit)
 649
 650 EXPORT_SYMBOL(snd_seq_instr_list_new);
 651 EXPORT_SYMBOL(snd_seq_instr_list_free);
 652 EXPORT_SYMBOL(snd_seq_instr_list_free_cond);
 653 EXPORT_SYMBOL(snd_seq_instr_find);
 654 EXPORT_SYMBOL(snd_seq_instr_free_use);
 655 EXPORT_SYMBOL(snd_seq_instr_event);