sound/usb/caiaq/device.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * caiaq.c: ALSA driver for caiaq/NativeInstruments devices
   4  *
   5  *   Copyright (c) 2007 Daniel Mack <daniel@caiaq.de>
   6  *                      Karsten Wiese <fzu@wemgehoertderstaat.de>
   7 */
   8
   9 #include <linux/moduleparam.h>
  10 #include <linux/device.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/module.h>
  13 #include <linux/init.h>
  14 #include <linux/gfp.h>
  15 #include <linux/usb.h>
  16 #include <sound/initval.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19
  20 #include "device.h"
  21 #include "audio.h"
  22 #include "midi.h"
  23 #include "control.h"
  24 #include "input.h"
  25
  26 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
  27 MODULE_DESCRIPTION("caiaq USB audio");
  28 MODULE_LICENSE("GPL");
  29 MODULE_SUPPORTED_DEVICE("{{Native Instruments,RigKontrol2},"
  30                          "{Native Instruments,RigKontrol3},"
  31                          "{Native Instruments,Kore Controller},"
  32                          "{Native Instruments,Kore Controller 2},"
  33                          "{Native Instruments,Audio Kontrol 1},"
  34                          "{Native Instruments,Audio 2 DJ},"
  35                          "{Native Instruments,Audio 4 DJ},"
  36                          "{Native Instruments,Audio 8 DJ},"
  37                          "{Native Instruments,Traktor Audio 2},"
  38                          "{Native Instruments,Session I/O},"
  39                          "{Native Instruments,GuitarRig mobile},"
  40                          "{Native Instruments,Traktor Kontrol X1},"
  41                          "{Native Instruments,Traktor Kontrol S4},"
  42                          "{Native Instruments,Maschine Controller}}");
  43
  44 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
  45 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
  46 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
  47
  48 module_param_array(index, int, NULL, 0444);
  49 MODULE_PARM_DESC(index, "Index value for the caiaq sound device");
  50 module_param_array(id, charp, NULL, 0444);
  51 MODULE_PARM_DESC(id, "ID string for the caiaq soundcard.");
  52 module_param_array(enable, bool, NULL, 0444);
  53 MODULE_PARM_DESC(enable, "Enable the caiaq soundcard.");
  54
  55 enum {
  56         SAMPLERATE_44100        = 0,
  57         SAMPLERATE_48000        = 1,
  58         SAMPLERATE_96000        = 2,
  59         SAMPLERATE_192000       = 3,
  60         SAMPLERATE_88200        = 4,
  61         SAMPLERATE_INVALID      = 0xff
  62 };
  63
  64 enum {
  65         DEPTH_NONE      = 0,
  66         DEPTH_16        = 1,
  67         DEPTH_24        = 2,
  68         DEPTH_32        = 3
  69 };
  70
  71 static const struct usb_device_id snd_usb_id_table[] = {
  72         {
  73                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  74                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  75                 .idProduct =    USB_PID_RIGKONTROL2
  76         },
  77         {
  78                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  79                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  80                 .idProduct =    USB_PID_RIGKONTROL3
  81         },
  82         {
  83                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  84                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  85                 .idProduct =    USB_PID_KORECONTROLLER
  86         },
  87         {
  88                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  89                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  90                 .idProduct =    USB_PID_KORECONTROLLER2
  91         },
  92         {
  93                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  94                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  95                 .idProduct =    USB_PID_AK1
  96         },
  97         {
  98                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  99                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 100                 .idProduct =    USB_PID_AUDIO8DJ
 101         },
 102         {
 103                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 104                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 105                 .idProduct =    USB_PID_SESSIONIO
 106         },
 107         {
 108                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 109                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 110                 .idProduct =    USB_PID_GUITARRIGMOBILE
 111         },
 112         {
 113                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 114                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 115                 .idProduct =    USB_PID_AUDIO4DJ
 116         },
 117         {
 118                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 119                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 120                 .idProduct =    USB_PID_AUDIO2DJ
 121         },
 122         {
 123                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 124                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 125                 .idProduct =    USB_PID_TRAKTORKONTROLX1
 126         },
 127         {
 128                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 129                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 130                 .idProduct =    USB_PID_TRAKTORKONTROLS4
 131         },
 132         {
 133                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 134                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 135                 .idProduct =    USB_PID_TRAKTORAUDIO2
 136         },
 137         {
 138                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 139                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 140                 .idProduct =    USB_PID_MASCHINECONTROLLER
 141         },
 142         { /* terminator */ }
 143 };
 144
 145 static void usb_ep1_command_reply_dispatch (struct urb* urb)
 146 {
 147         int ret;
 148         struct device *dev = &urb->dev->dev;
 149         struct snd_usb_caiaqdev *cdev = urb->context;
 150         unsigned char *buf = urb->transfer_buffer;
 151
 152         if (urb->status || !cdev) {
 153                 dev_warn(dev, "received EP1 urb->status = %i\n", urb->status);
 154                 return;
 155         }
 156
 157         switch(buf[0]) {
 158         case EP1_CMD_GET_DEVICE_INFO:
 159                 memcpy(&cdev->spec, buf+1, sizeof(struct caiaq_device_spec));
 160                 cdev->spec.fw_version = le16_to_cpu(cdev->spec.fw_version);
 161                 dev_dbg(dev, "device spec (firmware %d): audio: %d in, %d out, "
 162                         "MIDI: %d in, %d out, data alignment %d\n",
 163                         cdev->spec.fw_version,
 164                         cdev->spec.num_analog_audio_in,
 165                         cdev->spec.num_analog_audio_out,
 166                         cdev->spec.num_midi_in,
 167                         cdev->spec.num_midi_out,
 168                         cdev->spec.data_alignment);
 169
 170                 cdev->spec_received++;
 171                 wake_up(&cdev->ep1_wait_queue);
 172                 break;
 173         case EP1_CMD_AUDIO_PARAMS:
 174                 cdev->audio_parm_answer = buf[1];
 175                 wake_up(&cdev->ep1_wait_queue);
 176                 break;
 177         case EP1_CMD_MIDI_READ:
 178                 snd_usb_caiaq_midi_handle_input(cdev, buf[1], buf + 3, buf[2]);
 179                 break;
 180         case EP1_CMD_READ_IO:
 181                 if (cdev->chip.usb_id ==
 182                         USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ)) {
 183                         if (urb->actual_length > sizeof(cdev->control_state))
 184                                 urb->actual_length = sizeof(cdev->control_state);
 185                         memcpy(cdev->control_state, buf + 1, urb->actual_length);
 186                         wake_up(&cdev->ep1_wait_queue);
 187                         break;
 188                 }
 189 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 190                 /* fall through */
 191         case EP1_CMD_READ_ERP:
 192         case EP1_CMD_READ_ANALOG:
 193                 snd_usb_caiaq_input_dispatch(cdev, buf, urb->actual_length);
 194 #endif
 195                 break;
 196         }
 197
 198         cdev->ep1_in_urb.actual_length = 0;
 199         ret = usb_submit_urb(&cdev->ep1_in_urb, GFP_ATOMIC);
 200         if (ret < 0)
 201                 dev_err(dev, "unable to submit urb. OOM!?\n");
 202 }
 203
 204 int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
 205                                unsigned char command,
 206                                const unsigned char *buffer,
 207                                int len)
 208 {
 209         int actual_len;
 210         struct usb_device *usb_dev = cdev->chip.dev;
 211
 212         if (!usb_dev)
 213                 return -EIO;
 214
 215         if (len > EP1_BUFSIZE - 1)
 216                 len = EP1_BUFSIZE - 1;
 217
 218         if (buffer && len > 0)
 219                 memcpy(cdev->ep1_out_buf+1, buffer, len);
 220
 221         cdev->ep1_out_buf[0] = command;
 222         return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
 223                            cdev->ep1_out_buf, len+1, &actual_len, 200);
 224 }
 225
 226 int snd_usb_caiaq_send_command_bank(struct snd_usb_caiaqdev *cdev,
 227                                unsigned char command,
 228                                unsigned char bank,
 229                                const unsigned char *buffer,
 230                                int len)
 231 {
 232         int actual_len;
 233         struct usb_device *usb_dev = cdev->chip.dev;
 234
 235         if (!usb_dev)
 236                 return -EIO;
 237
 238         if (len > EP1_BUFSIZE - 2)
 239                 len = EP1_BUFSIZE - 2;
 240
 241         if (buffer && len > 0)
 242                 memcpy(cdev->ep1_out_buf+2, buffer, len);
 243
 244         cdev->ep1_out_buf[0] = command;
 245         cdev->ep1_out_buf[1] = bank;
 246
 247         return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
 248                            cdev->ep1_out_buf, len+2, &actual_len, 200);
 249 }
 250
 251 int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev,
 252                                     int rate, int depth, int bpp)
 253 {
 254         int ret;
 255         char tmp[5];
 256         struct device *dev = caiaqdev_to_dev(cdev);
 257
 258         switch (rate) {
 259         case 44100:     tmp[0] = SAMPLERATE_44100;   break;
 260         case 48000:     tmp[0] = SAMPLERATE_48000;   break;
 261         case 88200:     tmp[0] = SAMPLERATE_88200;   break;
 262         case 96000:     tmp[0] = SAMPLERATE_96000;   break;
 263         case 192000:    tmp[0] = SAMPLERATE_192000;  break;
 264         default:        return -EINVAL;
 265         }
 266
 267         switch (depth) {
 268         case 16:        tmp[1] = DEPTH_16;   break;
 269         case 24:        tmp[1] = DEPTH_24;   break;
 270         default:        return -EINVAL;
 271         }
 272
 273         tmp[2] = bpp & 0xff;
 274         tmp[3] = bpp >> 8;
 275         tmp[4] = 1; /* packets per microframe */
 276
 277         dev_dbg(dev, "setting audio params: %d Hz, %d bits, %d bpp\n",
 278                 rate, depth, bpp);
 279
 280         cdev->audio_parm_answer = -1;
 281         ret = snd_usb_caiaq_send_command(cdev, EP1_CMD_AUDIO_PARAMS,
 282                                          tmp, sizeof(tmp));
 283
 284         if (ret)
 285                 return ret;
 286
 287         if (!wait_event_timeout(cdev->ep1_wait_queue,
 288             cdev->audio_parm_answer >= 0, HZ))
 289                 return -EPIPE;
 290
 291         if (cdev->audio_parm_answer != 1)
 292                 dev_dbg(dev, "unable to set the device's audio params\n");
 293         else
 294                 cdev->bpp = bpp;
 295
 296         return cdev->audio_parm_answer == 1 ? 0 : -EINVAL;
 297 }
 298
 299 int snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev *cdev,
 300                                int digital, int analog, int erp)
 301 {
 302         char tmp[3] = { digital, analog, erp };
 303         return snd_usb_caiaq_send_command(cdev, EP1_CMD_AUTO_MSG,
 304                                           tmp, sizeof(tmp));
 305 }
 306
 307 static void setup_card(struct snd_usb_caiaqdev *cdev)
 308 {
 309         int ret;
 310         char val[4];
 311         struct device *dev = caiaqdev_to_dev(cdev);
 312
 313         /* device-specific startup specials */
 314         switch (cdev->chip.usb_id) {
 315         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
 316                 /* RigKontrol2 - display centered dash ('-') */
 317                 val[0] = 0x00;
 318                 val[1] = 0x00;
 319                 val[2] = 0x01;
 320                 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 3);
 321                 break;
 322         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 323                 /* RigKontrol2 - display two centered dashes ('--') */
 324                 val[0] = 0x00;
 325                 val[1] = 0x40;
 326                 val[2] = 0x40;
 327                 val[3] = 0x00;
 328                 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 4);
 329                 break;
 330         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 331                 /* Audio Kontrol 1 - make USB-LED stop blinking */
 332                 val[0] = 0x00;
 333                 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 1);
 334                 break;
 335         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
 336                 /* Audio 8 DJ - trigger read of current settings */
 337                 cdev->control_state[0] = 0xff;
 338                 snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 0);
 339                 snd_usb_caiaq_send_command(cdev, EP1_CMD_READ_IO, NULL, 0);
 340
 341                 if (!wait_event_timeout(cdev->ep1_wait_queue,
 342                                         cdev->control_state[0] != 0xff, HZ))
 343                         return;
 344
 345                 /* fix up some defaults */
 346                 if ((cdev->control_state[1] != 2) ||
 347                     (cdev->control_state[2] != 3) ||
 348                     (cdev->control_state[4] != 2)) {
 349                         cdev->control_state[1] = 2;
 350                         cdev->control_state[2] = 3;
 351                         cdev->control_state[4] = 2;
 352                         snd_usb_caiaq_send_command(cdev,
 353                                 EP1_CMD_WRITE_IO, cdev->control_state, 6);
 354                 }
 355
 356                 break;
 357         }
 358
 359         if (cdev->spec.num_analog_audio_out +
 360             cdev->spec.num_analog_audio_in +
 361             cdev->spec.num_digital_audio_out +
 362             cdev->spec.num_digital_audio_in > 0) {
 363                 ret = snd_usb_caiaq_audio_init(cdev);
 364                 if (ret < 0)
 365                         dev_err(dev, "Unable to set up audio system (ret=%d)\n", ret);
 366         }
 367
 368         if (cdev->spec.num_midi_in +
 369             cdev->spec.num_midi_out > 0) {
 370                 ret = snd_usb_caiaq_midi_init(cdev);
 371                 if (ret < 0)
 372                         dev_err(dev, "Unable to set up MIDI system (ret=%d)\n", ret);
 373         }
 374
 375 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 376         ret = snd_usb_caiaq_input_init(cdev);
 377         if (ret < 0)
 378                 dev_err(dev, "Unable to set up input system (ret=%d)\n", ret);
 379 #endif
 380
 381         /* finally, register the card and all its sub-instances */
 382         ret = snd_card_register(cdev->chip.card);
 383         if (ret < 0) {
 384                 dev_err(dev, "snd_card_register() returned %d\n", ret);
 385                 snd_card_free(cdev->chip.card);
 386         }
 387
 388         ret = snd_usb_caiaq_control_init(cdev);
 389         if (ret < 0)
 390                 dev_err(dev, "Unable to set up control system (ret=%d)\n", ret);
 391 }
 392
 393 static int create_card(struct usb_device *usb_dev,
 394                        struct usb_interface *intf,
 395                        struct snd_card **cardp)
 396 {
 397         int devnum;
 398         int err;
 399         struct snd_card *card;
 400         struct snd_usb_caiaqdev *cdev;
 401
 402         for (devnum = 0; devnum < SNDRV_CARDS; devnum++)
 403                 if (enable[devnum])
 404                         break;
 405
 406         if (devnum >= SNDRV_CARDS)
 407                 return -ENODEV;
 408
 409         err = snd_card_new(&intf->dev,
 410                            index[devnum], id[devnum], THIS_MODULE,
 411                            sizeof(struct snd_usb_caiaqdev), &card);
 412         if (err < 0)
 413                 return err;
 414
 415         cdev = caiaqdev(card);
 416         cdev->chip.dev = usb_dev;
 417         cdev->chip.card = card;
 418         cdev->chip.usb_id = USB_ID(le16_to_cpu(usb_dev->descriptor.idVendor),
 419                                   le16_to_cpu(usb_dev->descriptor.idProduct));
 420         spin_lock_init(&cdev->spinlock);
 421
 422         *cardp = card;
 423         return 0;
 424 }
 425
 426 static int init_card(struct snd_usb_caiaqdev *cdev)
 427 {
 428         char *c, usbpath[32];
 429         struct usb_device *usb_dev = cdev->chip.dev;
 430         struct snd_card *card = cdev->chip.card;
 431         struct device *dev = caiaqdev_to_dev(cdev);
 432         int err, len;
 433
 434         if (usb_set_interface(usb_dev, 0, 1) != 0) {
 435                 dev_err(dev, "can't set alt interface.\n");
 436                 return -EIO;
 437         }
 438
 439         usb_init_urb(&cdev->ep1_in_urb);
 440         usb_init_urb(&cdev->midi_out_urb);
 441
 442         usb_fill_bulk_urb(&cdev->ep1_in_urb, usb_dev,
 443                           usb_rcvbulkpipe(usb_dev, 0x1),
 444                           cdev->ep1_in_buf, EP1_BUFSIZE,
 445                           usb_ep1_command_reply_dispatch, cdev);
 446
 447         usb_fill_bulk_urb(&cdev->midi_out_urb, usb_dev,
 448                           usb_sndbulkpipe(usb_dev, 0x1),
 449                           cdev->midi_out_buf, EP1_BUFSIZE,
 450                           snd_usb_caiaq_midi_output_done, cdev);
 451
 452         /* sanity checks of EPs before actually submitting */
 453         if (usb_urb_ep_type_check(&cdev->ep1_in_urb) ||
 454             usb_urb_ep_type_check(&cdev->midi_out_urb)) {
 455                 dev_err(dev, "invalid EPs\n");
 456                 return -EINVAL;
 457         }
 458
 459         init_waitqueue_head(&cdev->ep1_wait_queue);
 460         init_waitqueue_head(&cdev->prepare_wait_queue);
 461
 462         if (usb_submit_urb(&cdev->ep1_in_urb, GFP_KERNEL) != 0)
 463                 return -EIO;
 464
 465         err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
 466         if (err)
 467                 goto err_kill_urb;
 468
 469         if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ)) {
 470                 err = -ENODEV;
 471                 goto err_kill_urb;
 472         }
 473
 474         usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
 475                    cdev->vendor_name, CAIAQ_USB_STR_LEN);
 476
 477         usb_string(usb_dev, usb_dev->descriptor.iProduct,
 478                    cdev->product_name, CAIAQ_USB_STR_LEN);
 479
 480         strlcpy(card->driver, MODNAME, sizeof(card->driver));
 481         strlcpy(card->shortname, cdev->product_name, sizeof(card->shortname));
 482         strlcpy(card->mixername, cdev->product_name, sizeof(card->mixername));
 483
 484         /* if the id was not passed as module option, fill it with a shortened
 485          * version of the product string which does not contain any
 486          * whitespaces */
 487
 488         if (*card->id == '\0') {
 489                 char id[sizeof(card->id)];
 490
 491                 memset(id, 0, sizeof(id));
 492
 493                 for (c = card->shortname, len = 0;
 494                         *c && len < sizeof(card->id); c++)
 495                         if (*c != ' ')
 496                                 id[len++] = *c;
 497
 498                 snd_card_set_id(card, id);
 499         }
 500
 501         usb_make_path(usb_dev, usbpath, sizeof(usbpath));
 502         snprintf(card->longname, sizeof(card->longname), "%s %s (%s)",
 503                        cdev->vendor_name, cdev->product_name, usbpath);
 504
 505         setup_card(cdev);
 506         return 0;
 507
 508  err_kill_urb:
 509         usb_kill_urb(&cdev->ep1_in_urb);
 510         return err;
 511 }
 512
 513 static int snd_probe(struct usb_interface *intf,
 514                      const struct usb_device_id *id)
 515 {
 516         int ret;
 517         struct snd_card *card = NULL;
 518         struct usb_device *usb_dev = interface_to_usbdev(intf);
 519
 520         ret = create_card(usb_dev, intf, &card);
 521
 522         if (ret < 0)
 523                 return ret;
 524
 525         usb_set_intfdata(intf, card);
 526         ret = init_card(caiaqdev(card));
 527         if (ret < 0) {
 528                 dev_err(&usb_dev->dev, "unable to init card! (ret=%d)\n", ret);
 529                 snd_card_free(card);
 530                 return ret;
 531         }
 532
 533         return 0;
 534 }
 535
 536 static void snd_disconnect(struct usb_interface *intf)
 537 {
 538         struct snd_card *card = usb_get_intfdata(intf);
 539         struct device *dev = intf->usb_dev;
 540         struct snd_usb_caiaqdev *cdev;
 541
 542         if (!card)
 543                 return;
 544
 545         cdev = caiaqdev(card);
 546         dev_dbg(dev, "%s(%p)\n", __func__, intf);
 547
 548         snd_card_disconnect(card);
 549
 550 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 551         snd_usb_caiaq_input_free(cdev);
 552 #endif
 553         snd_usb_caiaq_audio_free(cdev);
 554
 555         usb_kill_urb(&cdev->ep1_in_urb);
 556         usb_kill_urb(&cdev->midi_out_urb);
 557
 558         snd_card_free(card);
 559         usb_reset_device(interface_to_usbdev(intf));
 560 }
 561
 562
 563 MODULE_DEVICE_TABLE(usb, snd_usb_id_table);
 564 static struct usb_driver snd_usb_driver = {
 565         .name           = MODNAME,
 566         .probe          = snd_probe,
 567         .disconnect     = snd_disconnect,
 568         .id_table       = snd_usb_id_table,
 569 };
 570
 571 module_usb_driver(snd_usb_driver);