Commit | Line | Data |
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523f1dce DM |
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/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/usb.h> | |
27 | #include <linux/input.h> | |
28 | #include <linux/spinlock.h> | |
523f1dce DM |
29 | #include <sound/core.h> |
30 | #include <sound/initval.h> | |
31 | #include <sound/pcm.h> | |
32 | #include <sound/rawmidi.h> | |
8e3cd08e | 33 | #include <sound/control.h> |
523f1dce DM |
34 | |
35 | #include "caiaq-device.h" | |
36 | #include "caiaq-audio.h" | |
37 | #include "caiaq-midi.h" | |
8e3cd08e | 38 | #include "caiaq-control.h" |
523f1dce DM |
39 | |
40 | #ifdef CONFIG_SND_USB_CAIAQ_INPUT | |
41 | #include "caiaq-input.h" | |
42 | #endif | |
43 | ||
44 | MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); | |
12666f05 | 45 | MODULE_DESCRIPTION("caiaq USB audio, version 1.3.9"); |
523f1dce DM |
46 | MODULE_LICENSE("GPL"); |
47 | MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2}," | |
ad1e34b5 | 48 | "{Native Instruments, RigKontrol3}," |
523f1dce | 49 | "{Native Instruments, Kore Controller}," |
7829d0ec | 50 | "{Native Instruments, Kore Controller 2}," |
f3e9d5d1 DM |
51 | "{Native Instruments, Audio Kontrol 1}," |
52 | "{Native Instruments, Audio 8 DJ}," | |
53 | "{Native Instruments, Session I/O}}"); | |
523f1dce DM |
54 | |
55 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ | |
56 | static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ | |
57 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ | |
58 | static int snd_card_used[SNDRV_CARDS]; | |
59 | ||
60 | module_param_array(index, int, NULL, 0444); | |
61 | MODULE_PARM_DESC(index, "Index value for the caiaq sound device"); | |
62 | module_param_array(id, charp, NULL, 0444); | |
63 | MODULE_PARM_DESC(id, "ID string for the caiaq soundcard."); | |
64 | module_param_array(enable, bool, NULL, 0444); | |
65 | MODULE_PARM_DESC(enable, "Enable the caiaq soundcard."); | |
66 | ||
67 | enum { | |
68 | SAMPLERATE_44100 = 0, | |
69 | SAMPLERATE_48000 = 1, | |
70 | SAMPLERATE_96000 = 2, | |
71 | SAMPLERATE_192000 = 3, | |
72 | SAMPLERATE_88200 = 4, | |
73 | SAMPLERATE_INVALID = 0xff | |
74 | }; | |
75 | ||
76 | enum { | |
77 | DEPTH_NONE = 0, | |
78 | DEPTH_16 = 1, | |
79 | DEPTH_24 = 2, | |
80 | DEPTH_32 = 3 | |
81 | }; | |
82 | ||
83 | static struct usb_device_id snd_usb_id_table[] = { | |
84 | { | |
85 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
86 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
87 | .idProduct = USB_PID_RIGKONTROL2 | |
88 | }, | |
ad1e34b5 DM |
89 | { |
90 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
91 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
92 | .idProduct = USB_PID_RIGKONTROL3 | |
93 | }, | |
523f1dce DM |
94 | { |
95 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
96 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
97 | .idProduct = USB_PID_KORECONTROLLER | |
98 | }, | |
7829d0ec DM |
99 | { |
100 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
101 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
102 | .idProduct = USB_PID_KORECONTROLLER2 | |
103 | }, | |
523f1dce DM |
104 | { |
105 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
106 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
107 | .idProduct = USB_PID_AK1 | |
108 | }, | |
109 | { | |
110 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
111 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
112 | .idProduct = USB_PID_AUDIO8DJ | |
113 | }, | |
f3e9d5d1 DM |
114 | { |
115 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
116 | .idVendor = USB_VID_NATIVEINSTRUMENTS, | |
117 | .idProduct = USB_PID_SESSIONIO | |
118 | }, | |
523f1dce DM |
119 | { /* terminator */ } |
120 | }; | |
121 | ||
122 | static void usb_ep1_command_reply_dispatch (struct urb* urb) | |
123 | { | |
124 | int ret; | |
125 | struct snd_usb_caiaqdev *dev = urb->context; | |
126 | unsigned char *buf = urb->transfer_buffer; | |
127 | ||
128 | if (urb->status || !dev) { | |
129 | log("received EP1 urb->status = %i\n", urb->status); | |
130 | return; | |
131 | } | |
132 | ||
133 | switch(buf[0]) { | |
134 | case EP1_CMD_GET_DEVICE_INFO: | |
135 | memcpy(&dev->spec, buf+1, sizeof(struct caiaq_device_spec)); | |
136 | dev->spec.fw_version = le16_to_cpu(dev->spec.fw_version); | |
137 | debug("device spec (firmware %d): audio: %d in, %d out, " | |
138 | "MIDI: %d in, %d out, data alignment %d\n", | |
139 | dev->spec.fw_version, | |
140 | dev->spec.num_analog_audio_in, | |
141 | dev->spec.num_analog_audio_out, | |
142 | dev->spec.num_midi_in, | |
143 | dev->spec.num_midi_out, | |
144 | dev->spec.data_alignment); | |
145 | ||
146 | dev->spec_received++; | |
147 | wake_up(&dev->ep1_wait_queue); | |
148 | break; | |
149 | case EP1_CMD_AUDIO_PARAMS: | |
150 | dev->audio_parm_answer = buf[1]; | |
151 | wake_up(&dev->ep1_wait_queue); | |
152 | break; | |
153 | case EP1_CMD_MIDI_READ: | |
154 | snd_usb_caiaq_midi_handle_input(dev, buf[1], buf + 3, buf[2]); | |
155 | break; | |
8e3cd08e DM |
156 | case EP1_CMD_READ_IO: |
157 | if (dev->chip.usb_id == | |
158 | USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ)) { | |
159 | if (urb->actual_length > sizeof(dev->control_state)) | |
160 | urb->actual_length = sizeof(dev->control_state); | |
161 | memcpy(dev->control_state, buf + 1, urb->actual_length); | |
162 | wake_up(&dev->ep1_wait_queue); | |
163 | break; | |
164 | } | |
523f1dce DM |
165 | #ifdef CONFIG_SND_USB_CAIAQ_INPUT |
166 | case EP1_CMD_READ_ERP: | |
167 | case EP1_CMD_READ_ANALOG: | |
523f1dce | 168 | snd_usb_caiaq_input_dispatch(dev, buf, urb->actual_length); |
523f1dce | 169 | #endif |
8e3cd08e | 170 | break; |
523f1dce DM |
171 | } |
172 | ||
173 | dev->ep1_in_urb.actual_length = 0; | |
174 | ret = usb_submit_urb(&dev->ep1_in_urb, GFP_ATOMIC); | |
175 | if (ret < 0) | |
176 | log("unable to submit urb. OOM!?\n"); | |
177 | } | |
178 | ||
8e3cd08e DM |
179 | int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *dev, |
180 | unsigned char command, | |
181 | const unsigned char *buffer, | |
182 | int len) | |
523f1dce DM |
183 | { |
184 | int actual_len; | |
185 | struct usb_device *usb_dev = dev->chip.dev; | |
186 | ||
187 | if (!usb_dev) | |
188 | return -EIO; | |
189 | ||
190 | if (len > EP1_BUFSIZE - 1) | |
191 | len = EP1_BUFSIZE - 1; | |
192 | ||
193 | if (buffer && len > 0) | |
194 | memcpy(dev->ep1_out_buf+1, buffer, len); | |
195 | ||
196 | dev->ep1_out_buf[0] = command; | |
197 | return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1), | |
198 | dev->ep1_out_buf, len+1, &actual_len, 200); | |
199 | } | |
200 | ||
201 | int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev, | |
202 | int rate, int depth, int bpp) | |
203 | { | |
204 | int ret; | |
205 | char tmp[5]; | |
206 | ||
207 | switch (rate) { | |
208 | case 44100: tmp[0] = SAMPLERATE_44100; break; | |
209 | case 48000: tmp[0] = SAMPLERATE_48000; break; | |
210 | case 88200: tmp[0] = SAMPLERATE_88200; break; | |
211 | case 96000: tmp[0] = SAMPLERATE_96000; break; | |
212 | case 192000: tmp[0] = SAMPLERATE_192000; break; | |
213 | default: return -EINVAL; | |
214 | } | |
215 | ||
216 | switch (depth) { | |
217 | case 16: tmp[1] = DEPTH_16; break; | |
218 | case 24: tmp[1] = DEPTH_24; break; | |
219 | default: return -EINVAL; | |
220 | } | |
221 | ||
222 | tmp[2] = bpp & 0xff; | |
223 | tmp[3] = bpp >> 8; | |
224 | tmp[4] = 1; /* packets per microframe */ | |
225 | ||
226 | debug("setting audio params: %d Hz, %d bits, %d bpp\n", | |
227 | rate, depth, bpp); | |
228 | ||
229 | dev->audio_parm_answer = -1; | |
8e3cd08e DM |
230 | ret = snd_usb_caiaq_send_command(dev, EP1_CMD_AUDIO_PARAMS, |
231 | tmp, sizeof(tmp)); | |
523f1dce DM |
232 | |
233 | if (ret) | |
234 | return ret; | |
235 | ||
236 | if (!wait_event_timeout(dev->ep1_wait_queue, | |
237 | dev->audio_parm_answer >= 0, HZ)) | |
238 | return -EPIPE; | |
239 | ||
240 | if (dev->audio_parm_answer != 1) | |
241 | debug("unable to set the device's audio params\n"); | |
242 | ||
243 | return dev->audio_parm_answer == 1 ? 0 : -EINVAL; | |
244 | } | |
245 | ||
246 | int snd_usb_caiaq_set_auto_msg (struct snd_usb_caiaqdev *dev, | |
247 | int digital, int analog, int erp) | |
248 | { | |
249 | char tmp[3] = { digital, analog, erp }; | |
8e3cd08e DM |
250 | return snd_usb_caiaq_send_command(dev, EP1_CMD_AUTO_MSG, |
251 | tmp, sizeof(tmp)); | |
523f1dce DM |
252 | } |
253 | ||
c598195a | 254 | static void __devinit setup_card(struct snd_usb_caiaqdev *dev) |
523f1dce DM |
255 | { |
256 | int ret; | |
ad1e34b5 | 257 | char val[4]; |
523f1dce DM |
258 | |
259 | /* device-specific startup specials */ | |
260 | switch (dev->chip.usb_id) { | |
261 | case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2): | |
262 | /* RigKontrol2 - display centered dash ('-') */ | |
263 | val[0] = 0x00; | |
264 | val[1] = 0x00; | |
265 | val[2] = 0x01; | |
8e3cd08e | 266 | snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO, val, 3); |
523f1dce | 267 | break; |
ad1e34b5 DM |
268 | case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3): |
269 | /* RigKontrol2 - display two centered dashes ('--') */ | |
270 | val[0] = 0x00; | |
271 | val[1] = 0x40; | |
272 | val[2] = 0x40; | |
273 | val[3] = 0x00; | |
8e3cd08e | 274 | snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO, val, 4); |
ad1e34b5 | 275 | break; |
523f1dce DM |
276 | case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1): |
277 | /* Audio Kontrol 1 - make USB-LED stop blinking */ | |
278 | val[0] = 0x00; | |
8e3cd08e DM |
279 | snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO, val, 1); |
280 | break; | |
281 | case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ): | |
282 | /* Audio 8 DJ - trigger read of current settings */ | |
283 | dev->control_state[0] = 0xff; | |
284 | snd_usb_caiaq_set_auto_msg(dev, 1, 0, 0); | |
285 | snd_usb_caiaq_send_command(dev, EP1_CMD_READ_IO, NULL, 0); | |
286 | ||
287 | if (!wait_event_timeout(dev->ep1_wait_queue, | |
288 | dev->control_state[0] != 0xff, HZ)) | |
289 | return; | |
290 | ||
291 | /* fix up some defaults */ | |
292 | if ((dev->control_state[1] != 2) || | |
293 | (dev->control_state[2] != 3) || | |
294 | (dev->control_state[4] != 2)) { | |
295 | dev->control_state[1] = 2; | |
296 | dev->control_state[2] = 3; | |
297 | dev->control_state[4] = 2; | |
298 | snd_usb_caiaq_send_command(dev, | |
299 | EP1_CMD_WRITE_IO, dev->control_state, 6); | |
300 | } | |
301 | ||
523f1dce DM |
302 | break; |
303 | } | |
304 | ||
7829d0ec DM |
305 | if (dev->spec.num_analog_audio_out + |
306 | dev->spec.num_analog_audio_in + | |
307 | dev->spec.num_digital_audio_out + | |
308 | dev->spec.num_digital_audio_in > 0) { | |
309 | ret = snd_usb_caiaq_audio_init(dev); | |
310 | if (ret < 0) | |
311 | log("Unable to set up audio system (ret=%d)\n", ret); | |
312 | } | |
523f1dce | 313 | |
7829d0ec DM |
314 | if (dev->spec.num_midi_in + |
315 | dev->spec.num_midi_out > 0) { | |
316 | ret = snd_usb_caiaq_midi_init(dev); | |
317 | if (ret < 0) | |
318 | log("Unable to set up MIDI system (ret=%d)\n", ret); | |
319 | } | |
523f1dce DM |
320 | |
321 | #ifdef CONFIG_SND_USB_CAIAQ_INPUT | |
322 | ret = snd_usb_caiaq_input_init(dev); | |
323 | if (ret < 0) | |
324 | log("Unable to set up input system (ret=%d)\n", ret); | |
325 | #endif | |
326 | ||
327 | /* finally, register the card and all its sub-instances */ | |
328 | ret = snd_card_register(dev->chip.card); | |
329 | if (ret < 0) { | |
330 | log("snd_card_register() returned %d\n", ret); | |
331 | snd_card_free(dev->chip.card); | |
332 | } | |
8e3cd08e DM |
333 | |
334 | ret = snd_usb_caiaq_control_init(dev); | |
335 | if (ret < 0) | |
336 | log("Unable to set up control system (ret=%d)\n", ret); | |
523f1dce DM |
337 | } |
338 | ||
339 | static struct snd_card* create_card(struct usb_device* usb_dev) | |
340 | { | |
341 | int devnum; | |
342 | struct snd_card *card; | |
343 | struct snd_usb_caiaqdev *dev; | |
344 | ||
345 | for (devnum = 0; devnum < SNDRV_CARDS; devnum++) | |
346 | if (enable[devnum] && !snd_card_used[devnum]) | |
347 | break; | |
348 | ||
349 | if (devnum >= SNDRV_CARDS) | |
350 | return NULL; | |
351 | ||
352 | card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, | |
353 | sizeof(struct snd_usb_caiaqdev)); | |
354 | if (!card) | |
355 | return NULL; | |
356 | ||
357 | dev = caiaqdev(card); | |
358 | dev->chip.dev = usb_dev; | |
359 | dev->chip.card = card; | |
8c5330a5 AV |
360 | dev->chip.usb_id = USB_ID(le16_to_cpu(usb_dev->descriptor.idVendor), |
361 | le16_to_cpu(usb_dev->descriptor.idProduct)); | |
523f1dce DM |
362 | spin_lock_init(&dev->spinlock); |
363 | snd_card_set_dev(card, &usb_dev->dev); | |
364 | ||
365 | return card; | |
366 | } | |
367 | ||
c598195a | 368 | static int __devinit init_card(struct snd_usb_caiaqdev *dev) |
523f1dce DM |
369 | { |
370 | char *c; | |
371 | struct usb_device *usb_dev = dev->chip.dev; | |
372 | struct snd_card *card = dev->chip.card; | |
373 | int err, len; | |
374 | ||
375 | if (usb_set_interface(usb_dev, 0, 1) != 0) { | |
376 | log("can't set alt interface.\n"); | |
377 | return -EIO; | |
378 | } | |
379 | ||
380 | usb_init_urb(&dev->ep1_in_urb); | |
381 | usb_init_urb(&dev->midi_out_urb); | |
382 | ||
383 | usb_fill_bulk_urb(&dev->ep1_in_urb, usb_dev, | |
384 | usb_rcvbulkpipe(usb_dev, 0x1), | |
385 | dev->ep1_in_buf, EP1_BUFSIZE, | |
386 | usb_ep1_command_reply_dispatch, dev); | |
387 | ||
388 | usb_fill_bulk_urb(&dev->midi_out_urb, usb_dev, | |
389 | usb_sndbulkpipe(usb_dev, 0x1), | |
390 | dev->midi_out_buf, EP1_BUFSIZE, | |
391 | snd_usb_caiaq_midi_output_done, dev); | |
392 | ||
393 | init_waitqueue_head(&dev->ep1_wait_queue); | |
394 | init_waitqueue_head(&dev->prepare_wait_queue); | |
395 | ||
396 | if (usb_submit_urb(&dev->ep1_in_urb, GFP_KERNEL) != 0) | |
397 | return -EIO; | |
398 | ||
8e3cd08e | 399 | err = snd_usb_caiaq_send_command(dev, EP1_CMD_GET_DEVICE_INFO, NULL, 0); |
523f1dce DM |
400 | if (err) |
401 | return err; | |
402 | ||
403 | if (!wait_event_timeout(dev->ep1_wait_queue, dev->spec_received, HZ)) | |
404 | return -ENODEV; | |
405 | ||
406 | usb_string(usb_dev, usb_dev->descriptor.iManufacturer, | |
407 | dev->vendor_name, CAIAQ_USB_STR_LEN); | |
408 | ||
409 | usb_string(usb_dev, usb_dev->descriptor.iProduct, | |
410 | dev->product_name, CAIAQ_USB_STR_LEN); | |
411 | ||
412 | usb_string(usb_dev, usb_dev->descriptor.iSerialNumber, | |
413 | dev->serial, CAIAQ_USB_STR_LEN); | |
414 | ||
415 | /* terminate serial string at first white space occurence */ | |
416 | c = strchr(dev->serial, ' '); | |
417 | if (c) | |
418 | *c = '\0'; | |
419 | ||
420 | strcpy(card->driver, MODNAME); | |
421 | strcpy(card->shortname, dev->product_name); | |
422 | ||
423 | len = snprintf(card->longname, sizeof(card->longname), | |
424 | "%s %s (serial %s, ", | |
425 | dev->vendor_name, dev->product_name, dev->serial); | |
426 | ||
427 | if (len < sizeof(card->longname) - 2) | |
428 | len += usb_make_path(usb_dev, card->longname + len, | |
429 | sizeof(card->longname) - len); | |
430 | ||
431 | card->longname[len++] = ')'; | |
432 | card->longname[len] = '\0'; | |
433 | setup_card(dev); | |
434 | return 0; | |
435 | } | |
436 | ||
c598195a | 437 | static int __devinit snd_probe(struct usb_interface *intf, |
523f1dce DM |
438 | const struct usb_device_id *id) |
439 | { | |
440 | int ret; | |
441 | struct snd_card *card; | |
442 | struct usb_device *device = interface_to_usbdev(intf); | |
443 | ||
444 | card = create_card(device); | |
445 | ||
446 | if (!card) | |
447 | return -ENOMEM; | |
448 | ||
f4e9749f | 449 | usb_set_intfdata(intf, card); |
523f1dce DM |
450 | ret = init_card(caiaqdev(card)); |
451 | if (ret < 0) { | |
452 | log("unable to init card! (ret=%d)\n", ret); | |
453 | snd_card_free(card); | |
454 | return ret; | |
455 | } | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static void snd_disconnect(struct usb_interface *intf) | |
461 | { | |
462 | struct snd_usb_caiaqdev *dev; | |
f4e9749f | 463 | struct snd_card *card = usb_get_intfdata(intf); |
523f1dce | 464 | |
8d048841 | 465 | debug("%s(%p)\n", __func__, intf); |
523f1dce DM |
466 | |
467 | if (!card) | |
468 | return; | |
469 | ||
470 | dev = caiaqdev(card); | |
471 | snd_card_disconnect(card); | |
472 | ||
473 | #ifdef CONFIG_SND_USB_CAIAQ_INPUT | |
474 | snd_usb_caiaq_input_free(dev); | |
475 | #endif | |
476 | snd_usb_caiaq_audio_free(dev); | |
477 | ||
478 | usb_kill_urb(&dev->ep1_in_urb); | |
479 | usb_kill_urb(&dev->midi_out_urb); | |
480 | ||
481 | snd_card_free(card); | |
482 | usb_reset_device(interface_to_usbdev(intf)); | |
483 | } | |
484 | ||
485 | ||
486 | MODULE_DEVICE_TABLE(usb, snd_usb_id_table); | |
487 | static struct usb_driver snd_usb_driver = { | |
488 | .name = MODNAME, | |
489 | .probe = snd_probe, | |
490 | .disconnect = snd_disconnect, | |
491 | .id_table = snd_usb_id_table, | |
492 | }; | |
493 | ||
494 | static int __init snd_module_init(void) | |
495 | { | |
496 | return usb_register(&snd_usb_driver); | |
497 | } | |
498 | ||
499 | static void __exit snd_module_exit(void) | |
500 | { | |
501 | usb_deregister(&snd_usb_driver); | |
502 | } | |
503 | ||
504 | module_init(snd_module_init) | |
505 | module_exit(snd_module_exit) | |
506 |