sound/firewire/bebob/bebob.c

   1 /*
   2  * bebob.c - a part of driver for BeBoB based devices
   3  *
   4  * Copyright (c) 2013-2014 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 /*
  10  * BeBoB is 'BridgeCo enhanced Breakout Box'. This is installed to firewire
  11  * devices with DM1000/DM1100/DM1500 chipset. It gives common way for host
  12  * system to handle BeBoB based devices.
  13  */
  14
  15 #include "bebob.h"
  16
  17 MODULE_DESCRIPTION("BridgeCo BeBoB driver");
  18 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
  19 MODULE_LICENSE("GPL v2");
  20
  21 static int index[SNDRV_CARDS]   = SNDRV_DEFAULT_IDX;
  22 static char *id[SNDRV_CARDS]    = SNDRV_DEFAULT_STR;
  23 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  24
  25 module_param_array(index, int, NULL, 0444);
  26 MODULE_PARM_DESC(index, "card index");
  27 module_param_array(id, charp, NULL, 0444);
  28 MODULE_PARM_DESC(id, "ID string");
  29 module_param_array(enable, bool, NULL, 0444);
  30 MODULE_PARM_DESC(enable, "enable BeBoB sound card");
  31
  32 static DEFINE_MUTEX(devices_mutex);
  33 static DECLARE_BITMAP(devices_used, SNDRV_CARDS);
  34
  35 /* Offsets from information register. */
  36 #define INFO_OFFSET_BEBOB_VERSION       0x08
  37 #define INFO_OFFSET_GUID                0x10
  38 #define INFO_OFFSET_HW_MODEL_ID         0x18
  39 #define INFO_OFFSET_HW_MODEL_REVISION   0x1c
  40
  41 #define VEN_EDIROL      0x000040ab
  42 #define VEN_PRESONUS    0x00000a92
  43 #define VEN_BRIDGECO    0x000007f5
  44 #define VEN_MACKIE1     0x0000000f
  45 #define VEN_MACKIE2     0x00000ff2
  46 #define VEN_STANTON     0x00001260
  47 #define VEN_TASCAM      0x0000022e
  48 #define VEN_BEHRINGER   0x00001564
  49 #define VEN_APOGEE      0x000003db
  50 #define VEN_ESI         0x00000f1b
  51 #define VEN_ACOUSTIC    0x00000002
  52 #define VEN_CME         0x0000000a
  53 #define VEN_PHONIC      0x00001496
  54 #define VEN_LYNX        0x000019e5
  55 #define VEN_ICON        0x00001a9e
  56 #define VEN_PRISMSOUND  0x00001198
  57 #define VEN_TERRATEC    0x00000aac
  58 #define VEN_YAMAHA      0x0000a0de
  59 #define VEN_FOCUSRITE   0x0000130e
  60 #define VEN_MAUDIO1     0x00000d6c
  61 #define VEN_MAUDIO2     0x000007f5
  62 #define VEN_DIGIDESIGN  0x00a07e
  63
  64 #define MODEL_FOCUSRITE_SAFFIRE_BOTH    0x00000000
  65 #define MODEL_MAUDIO_AUDIOPHILE_BOTH    0x00010060
  66 #define MODEL_MAUDIO_FW1814             0x00010071
  67 #define MODEL_MAUDIO_PROJECTMIX         0x00010091
  68
  69 static int
  70 name_device(struct snd_bebob *bebob, unsigned int vendor_id)
  71 {
  72         struct fw_device *fw_dev = fw_parent_device(bebob->unit);
  73         char vendor[24] = {0};
  74         char model[32] = {0};
  75         u32 hw_id;
  76         u32 data[2] = {0};
  77         u32 revision;
  78         u32 version;
  79         int err;
  80
  81         /* get vendor name from root directory */
  82         err = fw_csr_string(fw_dev->config_rom + 5, CSR_VENDOR,
  83                             vendor, sizeof(vendor));
  84         if (err < 0)
  85                 goto end;
  86
  87         /* get model name from unit directory */
  88         err = fw_csr_string(bebob->unit->directory, CSR_MODEL,
  89                             model, sizeof(model));
  90         if (err < 0)
  91                 goto end;
  92
  93         /* get hardware id */
  94         err = snd_bebob_read_quad(bebob->unit, INFO_OFFSET_HW_MODEL_ID,
  95                                   &hw_id);
  96         if (err < 0)
  97                 goto end;
  98
  99         /* get hardware revision */
 100         err = snd_bebob_read_quad(bebob->unit, INFO_OFFSET_HW_MODEL_REVISION,
 101                                   &revision);
 102         if (err < 0)
 103                 goto end;
 104
 105         /* get GUID */
 106         err = snd_bebob_read_block(bebob->unit, INFO_OFFSET_GUID,
 107                                    data, sizeof(data));
 108         if (err < 0)
 109                 goto end;
 110
 111         err = snd_bebob_read_quad(bebob->unit, INFO_OFFSET_BEBOB_VERSION,
 112                                   &version);
 113         if (err < 0)
 114                 goto end;
 115         bebob->version = version;
 116
 117         strcpy(bebob->card->driver, "BeBoB");
 118         strcpy(bebob->card->shortname, model);
 119         strcpy(bebob->card->mixername, model);
 120         snprintf(bebob->card->longname, sizeof(bebob->card->longname),
 121                  "%s %s (id:%d, rev:%d), GUID %08x%08x at %s, S%d",
 122                  vendor, model, hw_id, revision,
 123                  data[0], data[1], dev_name(&bebob->unit->device),
 124                  100 << fw_dev->max_speed);
 125 end:
 126         return err;
 127 }
 128
 129 /*
 130  * This module releases the FireWire unit data after all ALSA character devices
 131  * are released by applications. This is for releasing stream data or finishing
 132  * transactions safely. Thus at returning from .remove(), this module still keep
 133  * references for the unit.
 134  */
 135 static void
 136 bebob_card_free(struct snd_card *card)
 137 {
 138         struct snd_bebob *bebob = card->private_data;
 139
 140         snd_bebob_stream_destroy_duplex(bebob);
 141         fw_unit_put(bebob->unit);
 142
 143         kfree(bebob->maudio_special_quirk);
 144
 145         if (bebob->card_index >= 0) {
 146                 mutex_lock(&devices_mutex);
 147                 clear_bit(bebob->card_index, devices_used);
 148                 mutex_unlock(&devices_mutex);
 149         }
 150
 151         mutex_destroy(&bebob->mutex);
 152 }
 153
 154 static const struct snd_bebob_spec *
 155 get_saffire_spec(struct fw_unit *unit)
 156 {
 157         char name[24] = {0};
 158
 159         if (fw_csr_string(unit->directory, CSR_MODEL, name, sizeof(name)) < 0)
 160                 return NULL;
 161
 162         if (strcmp(name, "SaffireLE") == 0)
 163                 return &saffire_le_spec;
 164         else
 165                 return &saffire_spec;
 166 }
 167
 168 static bool
 169 check_audiophile_booted(struct fw_unit *unit)
 170 {
 171         char name[24] = {0};
 172
 173         if (fw_csr_string(unit->directory, CSR_MODEL, name, sizeof(name)) < 0)
 174                 return false;
 175
 176         return strncmp(name, "FW Audiophile Bootloader", 15) != 0;
 177 }
 178
 179 static int
 180 bebob_probe(struct fw_unit *unit,
 181             const struct ieee1394_device_id *entry)
 182 {
 183         struct snd_card *card;
 184         struct snd_bebob *bebob;
 185         const struct snd_bebob_spec *spec;
 186         unsigned int card_index;
 187         int err;
 188
 189         mutex_lock(&devices_mutex);
 190
 191         for (card_index = 0; card_index < SNDRV_CARDS; card_index++) {
 192                 if (!test_bit(card_index, devices_used) && enable[card_index])
 193                         break;
 194         }
 195         if (card_index >= SNDRV_CARDS) {
 196                 err = -ENOENT;
 197                 goto end;
 198         }
 199
 200         if ((entry->vendor_id == VEN_FOCUSRITE) &&
 201             (entry->model_id == MODEL_FOCUSRITE_SAFFIRE_BOTH))
 202                 spec = get_saffire_spec(unit);
 203         else if ((entry->vendor_id == VEN_MAUDIO1) &&
 204                  (entry->model_id == MODEL_MAUDIO_AUDIOPHILE_BOTH) &&
 205                  !check_audiophile_booted(unit))
 206                 spec = NULL;
 207         else
 208                 spec = (const struct snd_bebob_spec *)entry->driver_data;
 209
 210         if (spec == NULL) {
 211                 if ((entry->vendor_id == VEN_MAUDIO1) ||
 212                     (entry->vendor_id == VEN_MAUDIO2))
 213                         err = snd_bebob_maudio_load_firmware(unit);
 214                 else
 215                         err = -ENOSYS;
 216                 goto end;
 217         }
 218
 219         err = snd_card_new(&unit->device, index[card_index], id[card_index],
 220                            THIS_MODULE, sizeof(struct snd_bebob), &card);
 221         if (err < 0)
 222                 goto end;
 223         bebob = card->private_data;
 224         bebob->card_index = card_index;
 225         set_bit(card_index, devices_used);
 226         card->private_free = bebob_card_free;
 227
 228         bebob->card = card;
 229         bebob->unit = fw_unit_get(unit);
 230         bebob->spec = spec;
 231         mutex_init(&bebob->mutex);
 232         spin_lock_init(&bebob->lock);
 233         init_waitqueue_head(&bebob->hwdep_wait);
 234
 235         err = name_device(bebob, entry->vendor_id);
 236         if (err < 0)
 237                 goto error;
 238
 239         if ((entry->vendor_id == VEN_MAUDIO1) &&
 240             (entry->model_id == MODEL_MAUDIO_FW1814))
 241                 err = snd_bebob_maudio_special_discover(bebob, true);
 242         else if ((entry->vendor_id == VEN_MAUDIO1) &&
 243                  (entry->model_id == MODEL_MAUDIO_PROJECTMIX))
 244                 err = snd_bebob_maudio_special_discover(bebob, false);
 245         else
 246                 err = snd_bebob_stream_discover(bebob);
 247         if (err < 0)
 248                 goto error;
 249
 250         snd_bebob_proc_init(bebob);
 251
 252         if ((bebob->midi_input_ports > 0) ||
 253             (bebob->midi_output_ports > 0)) {
 254                 err = snd_bebob_create_midi_devices(bebob);
 255                 if (err < 0)
 256                         goto error;
 257         }
 258
 259         err = snd_bebob_create_pcm_devices(bebob);
 260         if (err < 0)
 261                 goto error;
 262
 263         err = snd_bebob_create_hwdep_device(bebob);
 264         if (err < 0)
 265                 goto error;
 266
 267         err = snd_bebob_stream_init_duplex(bebob);
 268         if (err < 0)
 269                 goto error;
 270
 271         if (!bebob->maudio_special_quirk) {
 272                 err = snd_card_register(card);
 273                 if (err < 0) {
 274                         snd_bebob_stream_destroy_duplex(bebob);
 275                         goto error;
 276                 }
 277         } else {
 278                 /*
 279                  * This is a workaround. This bus reset seems to have an effect
 280                  * to make devices correctly handling transactions. Without
 281                  * this, the devices have gap_count mismatch. This causes much
 282                  * failure of transaction.
 283                  *
 284                  * Just after registration, user-land application receive
 285                  * signals from dbus and starts I/Os. To avoid I/Os till the
 286                  * future bus reset, registration is done in next update().
 287                  */
 288                 bebob->deferred_registration = true;
 289                 fw_schedule_bus_reset(fw_parent_device(bebob->unit)->card,
 290                                       false, true);
 291         }
 292
 293         dev_set_drvdata(&unit->device, bebob);
 294 end:
 295         mutex_unlock(&devices_mutex);
 296         return err;
 297 error:
 298         mutex_unlock(&devices_mutex);
 299         snd_card_free(card);
 300         return err;
 301 }
 302
 303 /*
 304  * This driver doesn't update streams in bus reset handler.
 305  *
 306  * DM1000/ DM1100/DM1500 chipsets with BeBoB firmware transfer packets with
 307  * discontinued counter at bus reset. This discontinuity is immediately
 308  * detected in packet streaming layer, then it sets XRUN to PCM substream.
 309  *
 310  * ALSA PCM applications can know the XRUN by getting -EPIPE from PCM operation.
 311  * Then, they can recover the PCM substream by executing ioctl(2) with
 312  * SNDRV_PCM_IOCTL_PREPARE. 'struct snd_pcm_ops.prepare' is called and drivers
 313  * restart packet streaming.
 314  *
 315  * The above processing may be executed before this bus-reset handler is
 316  * executed. When this handler updates streams with current isochronous
 317  * channels, the streams already have the current ones.
 318  */
 319 static void
 320 bebob_update(struct fw_unit *unit)
 321 {
 322         struct snd_bebob *bebob = dev_get_drvdata(&unit->device);
 323
 324         if (bebob == NULL)
 325                 return;
 326
 327         fcp_bus_reset(bebob->unit);
 328
 329         if (bebob->deferred_registration) {
 330                 if (snd_card_register(bebob->card) < 0) {
 331                         snd_bebob_stream_destroy_duplex(bebob);
 332                         snd_card_free(bebob->card);
 333                 }
 334                 bebob->deferred_registration = false;
 335         }
 336 }
 337
 338 static void bebob_remove(struct fw_unit *unit)
 339 {
 340         struct snd_bebob *bebob = dev_get_drvdata(&unit->device);
 341
 342         if (bebob == NULL)
 343                 return;
 344
 345         /* No need to wait for releasing card object in this context. */
 346         snd_card_free_when_closed(bebob->card);
 347 }
 348
 349 static const struct snd_bebob_rate_spec normal_rate_spec = {
 350         .get    = &snd_bebob_stream_get_rate,
 351         .set    = &snd_bebob_stream_set_rate
 352 };
 353 static const struct snd_bebob_spec spec_normal = {
 354         .clock  = NULL,
 355         .rate   = &normal_rate_spec,
 356         .meter  = NULL
 357 };
 358
 359 static const struct ieee1394_device_id bebob_id_table[] = {
 360         /* Edirol, FA-66 */
 361         SND_BEBOB_DEV_ENTRY(VEN_EDIROL, 0x00010049, &spec_normal),
 362         /* Edirol, FA-101 */
 363         SND_BEBOB_DEV_ENTRY(VEN_EDIROL, 0x00010048, &spec_normal),
 364         /* Presonus, FIREBOX */
 365         SND_BEBOB_DEV_ENTRY(VEN_PRESONUS, 0x00010000, &spec_normal),
 366         /* PreSonus, FIREPOD/FP10 */
 367         SND_BEBOB_DEV_ENTRY(VEN_PRESONUS, 0x00010066, &spec_normal),
 368         /* PreSonus, Inspire1394 */
 369         SND_BEBOB_DEV_ENTRY(VEN_PRESONUS, 0x00010001, &spec_normal),
 370         /* BridgeCo, RDAudio1 */
 371         SND_BEBOB_DEV_ENTRY(VEN_BRIDGECO, 0x00010048, &spec_normal),
 372         /* BridgeCo, Audio5 */
 373         SND_BEBOB_DEV_ENTRY(VEN_BRIDGECO, 0x00010049, &spec_normal),
 374         /* Mackie, Onyx 1220/1620/1640 (Firewire I/O Card) */
 375         SND_BEBOB_DEV_ENTRY(VEN_MACKIE2, 0x00010065, &spec_normal),
 376         /* Mackie, d.2 (Firewire Option) */
 377         SND_BEBOB_DEV_ENTRY(VEN_MACKIE1, 0x00010067, &spec_normal),
 378         /* Stanton, ScratchAmp */
 379         SND_BEBOB_DEV_ENTRY(VEN_STANTON, 0x00000001, &spec_normal),
 380         /* Tascam, IF-FW DM */
 381         SND_BEBOB_DEV_ENTRY(VEN_TASCAM, 0x00010067, &spec_normal),
 382         /* Behringer, XENIX UFX 1204 */
 383         SND_BEBOB_DEV_ENTRY(VEN_BEHRINGER, 0x00001204, &spec_normal),
 384         /* Behringer, XENIX UFX 1604 */
 385         SND_BEBOB_DEV_ENTRY(VEN_BEHRINGER, 0x00001604, &spec_normal),
 386         /* Behringer, Digital Mixer X32 series (X-UF Card) */
 387         SND_BEBOB_DEV_ENTRY(VEN_BEHRINGER, 0x00000006, &spec_normal),
 388         /*  Behringer, F-Control Audio 1616 */
 389         SND_BEBOB_DEV_ENTRY(VEN_BEHRINGER, 0x001616, &spec_normal),
 390         /*  Behringer, F-Control Audio 610 */
 391         SND_BEBOB_DEV_ENTRY(VEN_BEHRINGER, 0x000610, &spec_normal),
 392         /* Apogee Electronics, Rosetta 200/400 (X-FireWire card) */
 393         /* Apogee Electronics, DA/AD/DD-16X (X-FireWire card) */
 394         SND_BEBOB_DEV_ENTRY(VEN_APOGEE, 0x00010048, &spec_normal),
 395         /* Apogee Electronics, Ensemble */
 396         SND_BEBOB_DEV_ENTRY(VEN_APOGEE, 0x00001eee, &spec_normal),
 397         /* ESI, Quatafire610 */
 398         SND_BEBOB_DEV_ENTRY(VEN_ESI, 0x00010064, &spec_normal),
 399         /* AcousticReality, eARMasterOne */
 400         SND_BEBOB_DEV_ENTRY(VEN_ACOUSTIC, 0x00000002, &spec_normal),
 401         /* CME, MatrixKFW */
 402         SND_BEBOB_DEV_ENTRY(VEN_CME, 0x00030000, &spec_normal),
 403         /* Phonic, Helix Board 12 MkII */
 404         SND_BEBOB_DEV_ENTRY(VEN_PHONIC, 0x00050000, &spec_normal),
 405         /* Phonic, Helix Board 18 MkII */
 406         SND_BEBOB_DEV_ENTRY(VEN_PHONIC, 0x00060000, &spec_normal),
 407         /* Phonic, Helix Board 24 MkII */
 408         SND_BEBOB_DEV_ENTRY(VEN_PHONIC, 0x00070000, &spec_normal),
 409         /* Phonic, Helix Board 12 Universal/18 Universal/24 Universal */
 410         SND_BEBOB_DEV_ENTRY(VEN_PHONIC, 0x00000000, &spec_normal),
 411         /* Lynx, Aurora 8/16 (LT-FW) */
 412         SND_BEBOB_DEV_ENTRY(VEN_LYNX, 0x00000001, &spec_normal),
 413         /* ICON, FireXon */
 414         SND_BEBOB_DEV_ENTRY(VEN_ICON, 0x00000001, &spec_normal),
 415         /* PrismSound, Orpheus */
 416         SND_BEBOB_DEV_ENTRY(VEN_PRISMSOUND, 0x00010048, &spec_normal),
 417         /* PrismSound, ADA-8XR */
 418         SND_BEBOB_DEV_ENTRY(VEN_PRISMSOUND, 0x0000ada8, &spec_normal),
 419         /* TerraTec Electronic GmbH, PHASE 88 Rack FW */
 420         SND_BEBOB_DEV_ENTRY(VEN_TERRATEC, 0x00000003, &phase88_rack_spec),
 421         /* TerraTec Electronic GmbH, PHASE 24 FW */
 422         SND_BEBOB_DEV_ENTRY(VEN_TERRATEC, 0x00000004, &phase24_series_spec),
 423         /* TerraTec Electronic GmbH, Phase X24 FW */
 424         SND_BEBOB_DEV_ENTRY(VEN_TERRATEC, 0x00000007, &phase24_series_spec),
 425         /* TerraTec Electronic GmbH, EWS MIC2/MIC8 */
 426         SND_BEBOB_DEV_ENTRY(VEN_TERRATEC, 0x00000005, &spec_normal),
 427         /* Terratec Electronic GmbH, Aureon 7.1 Firewire */
 428         SND_BEBOB_DEV_ENTRY(VEN_TERRATEC, 0x00000002, &spec_normal),
 429         /* Yamaha, GO44 */
 430         SND_BEBOB_DEV_ENTRY(VEN_YAMAHA, 0x0010000b, &yamaha_go_spec),
 431         /* YAMAHA, GO46 */
 432         SND_BEBOB_DEV_ENTRY(VEN_YAMAHA, 0x0010000c, &yamaha_go_spec),
 433         /* Focusrite, SaffirePro 26 I/O */
 434         SND_BEBOB_DEV_ENTRY(VEN_FOCUSRITE, 0x00000003, &saffirepro_26_spec),
 435         /* Focusrite, SaffirePro 10 I/O */
 436         SND_BEBOB_DEV_ENTRY(VEN_FOCUSRITE, 0x00000006, &saffirepro_10_spec),
 437         /* Focusrite, Saffire(no label and LE) */
 438         SND_BEBOB_DEV_ENTRY(VEN_FOCUSRITE, MODEL_FOCUSRITE_SAFFIRE_BOTH,
 439                             &saffire_spec),
 440         /* M-Audio, Firewire 410 */
 441         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO2, 0x00010058, NULL),     /* bootloader */
 442         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO2, 0x00010046, &maudio_fw410_spec),
 443         /* M-Audio, Firewire Audiophile */
 444         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_AUDIOPHILE_BOTH,
 445                             &maudio_audiophile_spec),
 446         /* M-Audio, Firewire Solo */
 447         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010062, &maudio_solo_spec),
 448         /* M-Audio, Ozonic */
 449         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x0000000a, &maudio_ozonic_spec),
 450         /* M-Audio NRV10 */
 451         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010081, &maudio_nrv10_spec),
 452         /* M-Audio, ProFireLightbridge */
 453         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x000100a1, &spec_normal),
 454         /* Firewire 1814 */
 455         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010070, NULL),     /* bootloader */
 456         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_FW1814,
 457                             &maudio_special_spec),
 458         /* M-Audio ProjectMix */
 459         SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_PROJECTMIX,
 460                             &maudio_special_spec),
 461         /* Digidesign Mbox 2 Pro */
 462         SND_BEBOB_DEV_ENTRY(VEN_DIGIDESIGN, 0x0000a9, &spec_normal),
 463         /* IDs are unknown but able to be supported */
 464         /*  Apogee, Mini-ME Firewire */
 465         /*  Apogee, Mini-DAC Firewire */
 466         /*  Cakawalk, Sonar Power Studio 66 */
 467         /*  CME, UF400e */
 468         /*  ESI, Quotafire XL */
 469         /*  Infrasonic, DewX */
 470         /*  Infrasonic, Windy6 */
 471         /*  Mackie, Digital X Bus x.200 */
 472         /*  Mackie, Digital X Bus x.400 */
 473         /*  Phonic, HB 12 */
 474         /*  Phonic, HB 24 */
 475         /*  Phonic, HB 18 */
 476         /*  Phonic, FireFly 202 */
 477         /*  Phonic, FireFly 302 */
 478         /*  Rolf Spuler, Firewire Guitar */
 479         {}
 480 };
 481 MODULE_DEVICE_TABLE(ieee1394, bebob_id_table);
 482
 483 static struct fw_driver bebob_driver = {
 484         .driver = {
 485                 .owner  = THIS_MODULE,
 486                 .name   = "snd-bebob",
 487                 .bus    = &fw_bus_type,
 488         },
 489         .probe    = bebob_probe,
 490         .update   = bebob_update,
 491         .remove   = bebob_remove,
 492         .id_table = bebob_id_table,
 493 };
 494
 495 static int __init
 496 snd_bebob_init(void)
 497 {
 498         return driver_register(&bebob_driver.driver);
 499 }
 500
 501 static void __exit
 502 snd_bebob_exit(void)
 503 {
 504         driver_unregister(&bebob_driver.driver);
 505 }
 506
 507 module_init(snd_bebob_init);
 508 module_exit(snd_bebob_exit);