kernel/sound/usb/caiaq/device.c

   1 /*
   2  * caiaq.c: ALSA driver for caiaq/NativeInstruments devices
   3  *
   4  *   Copyright (c) 2007 Daniel Mack <daniel@caiaq.de>
   5  *                      Karsten Wiese <fzu@wemgehoertderstaat.de>
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20 */
  21
  22 #include <linux/moduleparam.h>
  23 #include <linux/device.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/gfp.h>
  28 #include <linux/usb.h>
  29 #include <sound/initval.h>
  30 #include <sound/core.h>
  31 #include <sound/pcm.h>
  32
  33 #include "device.h"
  34 #include "audio.h"
  35 #include "midi.h"
  36 #include "control.h"
  37 #include "input.h"
  38
  39 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
  40 MODULE_DESCRIPTION("caiaq USB audio");
  41 MODULE_LICENSE("GPL");
  42 MODULE_SUPPORTED_DEVICE("{{Native Instruments,RigKontrol2},"
  43                          "{Native Instruments,RigKontrol3},"
  44                          "{Native Instruments,Kore Controller},"
  45                          "{Native Instruments,Kore Controller 2},"
  46                          "{Native Instruments,Audio Kontrol 1},"
  47                          "{Native Instruments,Audio 2 DJ},"
  48                          "{Native Instruments,Audio 4 DJ},"
  49                          "{Native Instruments,Audio 8 DJ},"
  50                          "{Native Instruments,Traktor Audio 2},"
  51                          "{Native Instruments,Session I/O},"
  52                          "{Native Instruments,GuitarRig mobile},"
  53                          "{Native Instruments,Traktor Kontrol X1},"
  54                          "{Native Instruments,Traktor Kontrol S4},"
  55                          "{Native Instruments,Maschine Controller}}");
  56
  57 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
  58 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
  59 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
  60
  61 module_param_array(index, int, NULL, 0444);
  62 MODULE_PARM_DESC(index, "Index value for the caiaq sound device");
  63 module_param_array(id, charp, NULL, 0444);
  64 MODULE_PARM_DESC(id, "ID string for the caiaq soundcard.");
  65 module_param_array(enable, bool, NULL, 0444);
  66 MODULE_PARM_DESC(enable, "Enable the caiaq soundcard.");
  67
  68 enum {
  69         SAMPLERATE_44100        = 0,
  70         SAMPLERATE_48000        = 1,
  71         SAMPLERATE_96000        = 2,
  72         SAMPLERATE_192000       = 3,
  73         SAMPLERATE_88200        = 4,
  74         SAMPLERATE_INVALID      = 0xff
  75 };
  76
  77 enum {
  78         DEPTH_NONE      = 0,
  79         DEPTH_16        = 1,
  80         DEPTH_24        = 2,
  81         DEPTH_32        = 3
  82 };
  83
  84 static struct usb_device_id snd_usb_id_table[] = {
  85         {
  86                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  87                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  88                 .idProduct =    USB_PID_RIGKONTROL2
  89         },
  90         {
  91                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  92                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  93                 .idProduct =    USB_PID_RIGKONTROL3
  94         },
  95         {
  96                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
  97                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
  98                 .idProduct =    USB_PID_KORECONTROLLER
  99         },
 100         {
 101                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 102                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 103                 .idProduct =    USB_PID_KORECONTROLLER2
 104         },
 105         {
 106                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 107                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 108                 .idProduct =    USB_PID_AK1
 109         },
 110         {
 111                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 112                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 113                 .idProduct =    USB_PID_AUDIO8DJ
 114         },
 115         {
 116                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 117                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 118                 .idProduct =    USB_PID_SESSIONIO
 119         },
 120         {
 121                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 122                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 123                 .idProduct =    USB_PID_GUITARRIGMOBILE
 124         },
 125         {
 126                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 127                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 128                 .idProduct =    USB_PID_AUDIO4DJ
 129         },
 130         {
 131                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 132                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 133                 .idProduct =    USB_PID_AUDIO2DJ
 134         },
 135         {
 136                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 137                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 138                 .idProduct =    USB_PID_TRAKTORKONTROLX1
 139         },
 140         {
 141                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 142                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 143                 .idProduct =    USB_PID_TRAKTORKONTROLS4
 144         },
 145         {
 146                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 147                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 148                 .idProduct =    USB_PID_TRAKTORAUDIO2
 149         },
 150         {
 151                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 152                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
 153                 .idProduct =    USB_PID_MASCHINECONTROLLER
 154         },
 155         { /* terminator */ }
 156 };
 157
 158 static void usb_ep1_command_reply_dispatch (struct urb* urb)
 159 {
 160         int ret;
 161         struct device *dev = &urb->dev->dev;
 162         struct snd_usb_caiaqdev *cdev = urb->context;
 163         unsigned char *buf = urb->transfer_buffer;
 164
 165         if (urb->status || !cdev) {
 166                 dev_warn(dev, "received EP1 urb->status = %i\n", urb->status);
 167                 return;
 168         }
 169
 170         switch(buf[0]) {
 171         case EP1_CMD_GET_DEVICE_INFO:
 172                 memcpy(&cdev->spec, buf+1, sizeof(struct caiaq_device_spec));
 173                 cdev->spec.fw_version = le16_to_cpu(cdev->spec.fw_version);
 174                 dev_dbg(dev, "device spec (firmware %d): audio: %d in, %d out, "
 175                         "MIDI: %d in, %d out, data alignment %d\n",
 176                         cdev->spec.fw_version,
 177                         cdev->spec.num_analog_audio_in,
 178                         cdev->spec.num_analog_audio_out,
 179                         cdev->spec.num_midi_in,
 180                         cdev->spec.num_midi_out,
 181                         cdev->spec.data_alignment);
 182
 183                 cdev->spec_received++;
 184                 wake_up(&cdev->ep1_wait_queue);
 185                 break;
 186         case EP1_CMD_AUDIO_PARAMS:
 187                 cdev->audio_parm_answer = buf[1];
 188                 wake_up(&cdev->ep1_wait_queue);
 189                 break;
 190         case EP1_CMD_MIDI_READ:
 191                 snd_usb_caiaq_midi_handle_input(cdev, buf[1], buf + 3, buf[2]);
 192                 break;
 193         case EP1_CMD_READ_IO:
 194                 if (cdev->chip.usb_id ==
 195                         USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ)) {
 196                         if (urb->actual_length > sizeof(cdev->control_state))
 197                                 urb->actual_length = sizeof(cdev->control_state);
 198                         memcpy(cdev->control_state, buf + 1, urb->actual_length);
 199                         wake_up(&cdev->ep1_wait_queue);
 200                         break;
 201                 }
 202 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 203         case EP1_CMD_READ_ERP:
 204         case EP1_CMD_READ_ANALOG:
 205                 snd_usb_caiaq_input_dispatch(cdev, buf, urb->actual_length);
 206 #endif
 207                 break;
 208         }
 209
 210         cdev->ep1_in_urb.actual_length = 0;
 211         ret = usb_submit_urb(&cdev->ep1_in_urb, GFP_ATOMIC);
 212         if (ret < 0)
 213                 dev_err(dev, "unable to submit urb. OOM!?\n");
 214 }
 215
 216 int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
 217                                unsigned char command,
 218                                const unsigned char *buffer,
 219                                int len)
 220 {
 221         int actual_len;
 222         struct usb_device *usb_dev = cdev->chip.dev;
 223
 224         if (!usb_dev)
 225                 return -EIO;
 226
 227         if (len > EP1_BUFSIZE - 1)
 228                 len = EP1_BUFSIZE - 1;
 229
 230         if (buffer && len > 0)
 231                 memcpy(cdev->ep1_out_buf+1, buffer, len);
 232
 233         cdev->ep1_out_buf[0] = command;
 234         return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
 235                            cdev->ep1_out_buf, len+1, &actual_len, 200);
 236 }
 237
 238 int snd_usb_caiaq_send_command_bank(struct snd_usb_caiaqdev *cdev,
 239                                unsigned char command,
 240                                unsigned char bank,
 241                                const unsigned char *buffer,
 242                                int len)
 243 {
 244         int actual_len;
 245         struct usb_device *usb_dev = cdev->chip.dev;
 246
 247         if (!usb_dev)
 248                 return -EIO;
 249
 250         if (len > EP1_BUFSIZE - 2)
 251                 len = EP1_BUFSIZE - 2;
 252
 253         if (buffer && len > 0)
 254                 memcpy(cdev->ep1_out_buf+2, buffer, len);
 255
 256         cdev->ep1_out_buf[0] = command;
 257         cdev->ep1_out_buf[1] = bank;
 258
 259         return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
 260                            cdev->ep1_out_buf, len+2, &actual_len, 200);
 261 }
 262
 263 int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev,
 264                                     int rate, int depth, int bpp)
 265 {
 266         int ret;
 267         char tmp[5];
 268         struct device *dev = caiaqdev_to_dev(cdev);
 269
 270         switch (rate) {
 271         case 44100:     tmp[0] = SAMPLERATE_44100;   break;
 272         case 48000:     tmp[0] = SAMPLERATE_48000;   break;
 273         case 88200:     tmp[0] = SAMPLERATE_88200;   break;
 274         case 96000:     tmp[0] = SAMPLERATE_96000;   break;
 275         case 192000:    tmp[0] = SAMPLERATE_192000;  break;
 276         default:        return -EINVAL;
 277         }
 278
 279         switch (depth) {
 280         case 16:        tmp[1] = DEPTH_16;   break;
 281         case 24:        tmp[1] = DEPTH_24;   break;
 282         default:        return -EINVAL;
 283         }
 284
 285         tmp[2] = bpp & 0xff;
 286         tmp[3] = bpp >> 8;
 287         tmp[4] = 1; /* packets per microframe */
 288
 289         dev_dbg(dev, "setting audio params: %d Hz, %d bits, %d bpp\n",
 290                 rate, depth, bpp);
 291
 292         cdev->audio_parm_answer = -1;
 293         ret = snd_usb_caiaq_send_command(cdev, EP1_CMD_AUDIO_PARAMS,
 294                                          tmp, sizeof(tmp));
 295
 296         if (ret)
 297                 return ret;
 298
 299         if (!wait_event_timeout(cdev->ep1_wait_queue,
 300             cdev->audio_parm_answer >= 0, HZ))
 301                 return -EPIPE;
 302
 303         if (cdev->audio_parm_answer != 1)
 304                 dev_dbg(dev, "unable to set the device's audio params\n");
 305         else
 306                 cdev->bpp = bpp;
 307
 308         return cdev->audio_parm_answer == 1 ? 0 : -EINVAL;
 309 }
 310
 311 int snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev *cdev,
 312                                int digital, int analog, int erp)
 313 {
 314         char tmp[3] = { digital, analog, erp };
 315         return snd_usb_caiaq_send_command(cdev, EP1_CMD_AUTO_MSG,
 316                                           tmp, sizeof(tmp));
 317 }
 318
 319 static void setup_card(struct snd_usb_caiaqdev *cdev)
 320 {
 321         int ret;
 322         char val[4];
 323         struct device *dev = caiaqdev_to_dev(cdev);
 324
 325         /* device-specific startup specials */
 326         switch (cdev->chip.usb_id) {
 327         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
 328                 /* RigKontrol2 - display centered dash ('-') */
 329                 val[0] = 0x00;
 330                 val[1] = 0x00;
 331                 val[2] = 0x01;
 332                 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 3);
 333                 break;
 334         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 335                 /* RigKontrol2 - display two centered dashes ('--') */
 336                 val[0] = 0x00;
 337                 val[1] = 0x40;
 338                 val[2] = 0x40;
 339                 val[3] = 0x00;
 340                 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 4);
 341                 break;
 342         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 343                 /* Audio Kontrol 1 - make USB-LED stop blinking */
 344                 val[0] = 0x00;
 345                 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 1);
 346                 break;
 347         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
 348                 /* Audio 8 DJ - trigger read of current settings */
 349                 cdev->control_state[0] = 0xff;
 350                 snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 0);
 351                 snd_usb_caiaq_send_command(cdev, EP1_CMD_READ_IO, NULL, 0);
 352
 353                 if (!wait_event_timeout(cdev->ep1_wait_queue,
 354                                         cdev->control_state[0] != 0xff, HZ))
 355                         return;
 356
 357                 /* fix up some defaults */
 358                 if ((cdev->control_state[1] != 2) ||
 359                     (cdev->control_state[2] != 3) ||
 360                     (cdev->control_state[4] != 2)) {
 361                         cdev->control_state[1] = 2;
 362                         cdev->control_state[2] = 3;
 363                         cdev->control_state[4] = 2;
 364                         snd_usb_caiaq_send_command(cdev,
 365                                 EP1_CMD_WRITE_IO, cdev->control_state, 6);
 366                 }
 367
 368                 break;
 369         }
 370
 371         if (cdev->spec.num_analog_audio_out +
 372             cdev->spec.num_analog_audio_in +
 373             cdev->spec.num_digital_audio_out +
 374             cdev->spec.num_digital_audio_in > 0) {
 375                 ret = snd_usb_caiaq_audio_init(cdev);
 376                 if (ret < 0)
 377                         dev_err(dev, "Unable to set up audio system (ret=%d)\n", ret);
 378         }
 379
 380         if (cdev->spec.num_midi_in +
 381             cdev->spec.num_midi_out > 0) {
 382                 ret = snd_usb_caiaq_midi_init(cdev);
 383                 if (ret < 0)
 384                         dev_err(dev, "Unable to set up MIDI system (ret=%d)\n", ret);
 385         }
 386
 387 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 388         ret = snd_usb_caiaq_input_init(cdev);
 389         if (ret < 0)
 390                 dev_err(dev, "Unable to set up input system (ret=%d)\n", ret);
 391 #endif
 392
 393         /* finally, register the card and all its sub-instances */
 394         ret = snd_card_register(cdev->chip.card);
 395         if (ret < 0) {
 396                 dev_err(dev, "snd_card_register() returned %d\n", ret);
 397                 snd_card_free(cdev->chip.card);
 398         }
 399
 400         ret = snd_usb_caiaq_control_init(cdev);
 401         if (ret < 0)
 402                 dev_err(dev, "Unable to set up control system (ret=%d)\n", ret);
 403 }
 404
 405 static int create_card(struct usb_device *usb_dev,
 406                        struct usb_interface *intf,
 407                        struct snd_card **cardp)
 408 {
 409         int devnum;
 410         int err;
 411         struct snd_card *card;
 412         struct snd_usb_caiaqdev *cdev;
 413
 414         for (devnum = 0; devnum < SNDRV_CARDS; devnum++)
 415                 if (enable[devnum])
 416                         break;
 417
 418         if (devnum >= SNDRV_CARDS)
 419                 return -ENODEV;
 420
 421         err = snd_card_new(&intf->dev,
 422                            index[devnum], id[devnum], THIS_MODULE,
 423                            sizeof(struct snd_usb_caiaqdev), &card);
 424         if (err < 0)
 425                 return err;
 426
 427         cdev = caiaqdev(card);
 428         cdev->chip.dev = usb_dev;
 429         cdev->chip.card = card;
 430         cdev->chip.usb_id = USB_ID(le16_to_cpu(usb_dev->descriptor.idVendor),
 431                                   le16_to_cpu(usb_dev->descriptor.idProduct));
 432         spin_lock_init(&cdev->spinlock);
 433
 434         *cardp = card;
 435         return 0;
 436 }
 437
 438 static int init_card(struct snd_usb_caiaqdev *cdev)
 439 {
 440         char *c, usbpath[32];
 441         struct usb_device *usb_dev = cdev->chip.dev;
 442         struct snd_card *card = cdev->chip.card;
 443         struct device *dev = caiaqdev_to_dev(cdev);
 444         int err, len;
 445
 446         if (usb_set_interface(usb_dev, 0, 1) != 0) {
 447                 dev_err(dev, "can't set alt interface.\n");
 448                 return -EIO;
 449         }
 450
 451         usb_init_urb(&cdev->ep1_in_urb);
 452         usb_init_urb(&cdev->midi_out_urb);
 453
 454         usb_fill_bulk_urb(&cdev->ep1_in_urb, usb_dev,
 455                           usb_rcvbulkpipe(usb_dev, 0x1),
 456                           cdev->ep1_in_buf, EP1_BUFSIZE,
 457                           usb_ep1_command_reply_dispatch, cdev);
 458
 459         usb_fill_bulk_urb(&cdev->midi_out_urb, usb_dev,
 460                           usb_sndbulkpipe(usb_dev, 0x1),
 461                           cdev->midi_out_buf, EP1_BUFSIZE,
 462                           snd_usb_caiaq_midi_output_done, cdev);
 463
 464         init_waitqueue_head(&cdev->ep1_wait_queue);
 465         init_waitqueue_head(&cdev->prepare_wait_queue);
 466
 467         if (usb_submit_urb(&cdev->ep1_in_urb, GFP_KERNEL) != 0)
 468                 return -EIO;
 469
 470         err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
 471         if (err)
 472                 return err;
 473
 474         if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ))
 475                 return -ENODEV;
 476
 477         usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
 478                    cdev->vendor_name, CAIAQ_USB_STR_LEN);
 479
 480         usb_string(usb_dev, usb_dev->descriptor.iProduct,
 481                    cdev->product_name, CAIAQ_USB_STR_LEN);
 482
 483         strlcpy(card->driver, MODNAME, sizeof(card->driver));
 484         strlcpy(card->shortname, cdev->product_name, sizeof(card->shortname));
 485         strlcpy(card->mixername, cdev->product_name, sizeof(card->mixername));
 486
 487         /* if the id was not passed as module option, fill it with a shortened
 488          * version of the product string which does not contain any
 489          * whitespaces */
 490
 491         if (*card->id == '\0') {
 492                 char id[sizeof(card->id)];
 493
 494                 memset(id, 0, sizeof(id));
 495
 496                 for (c = card->shortname, len = 0;
 497                         *c && len < sizeof(card->id); c++)
 498                         if (*c != ' ')
 499                                 id[len++] = *c;
 500
 501                 snd_card_set_id(card, id);
 502         }
 503
 504         usb_make_path(usb_dev, usbpath, sizeof(usbpath));
 505         snprintf(card->longname, sizeof(card->longname), "%s %s (%s)",
 506                        cdev->vendor_name, cdev->product_name, usbpath);
 507
 508         setup_card(cdev);
 509         return 0;
 510 }
 511
 512 static int snd_probe(struct usb_interface *intf,
 513                      const struct usb_device_id *id)
 514 {
 515         int ret;
 516         struct snd_card *card = NULL;
 517         struct usb_device *usb_dev = interface_to_usbdev(intf);
 518
 519         ret = create_card(usb_dev, intf, &card);
 520
 521         if (ret < 0)
 522                 return ret;
 523
 524         usb_set_intfdata(intf, card);
 525         ret = init_card(caiaqdev(card));
 526         if (ret < 0) {
 527                 dev_err(&usb_dev->dev, "unable to init card! (ret=%d)\n", ret);
 528                 snd_card_free(card);
 529                 return ret;
 530         }
 531
 532         return 0;
 533 }
 534
 535 static void snd_disconnect(struct usb_interface *intf)
 536 {
 537         struct snd_card *card = usb_get_intfdata(intf);
 538         struct device *dev = intf->usb_dev;
 539         struct snd_usb_caiaqdev *cdev;
 540
 541         if (!card)
 542                 return;
 543
 544         cdev = caiaqdev(card);
 545         dev_dbg(dev, "%s(%p)\n", __func__, intf);
 546
 547         snd_card_disconnect(card);
 548
 549 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 550         snd_usb_caiaq_input_free(cdev);
 551 #endif
 552         snd_usb_caiaq_audio_free(cdev);
 553
 554         usb_kill_urb(&cdev->ep1_in_urb);
 555         usb_kill_urb(&cdev->midi_out_urb);
 556
 557         snd_card_free(card);
 558         usb_reset_device(interface_to_usbdev(intf));
 559 }
 560
 561
 562 MODULE_DEVICE_TABLE(usb, snd_usb_id_table);
 563 static struct usb_driver snd_usb_driver = {
 564         .name           = MODNAME,
 565         .probe          = snd_probe,
 566         .disconnect     = snd_disconnect,
 567         .id_table       = snd_usb_id_table,
 568 };
 569
 570 module_usb_driver(snd_usb_driver);