1 /*
2 * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19 #include <sound/core.h>
20 #include <sound/hwdep.h>
21 #include <sound/pcm.h>
22 #include <sound/initval.h>
23 #define MODNAME "US122L"
24 #include "usb_stream.c"
25 #include "../usbaudio.h"
26 #include "us122l.h"
27
28 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
29 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
30 MODULE_LICENSE("GPL");
31
32 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
33 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
34 /* Enable this card */
35 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
36
37 module_param_array(index, int, NULL, 0444);
38 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
39 module_param_array(id, charp, NULL, 0444);
40 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
41 module_param_array(enable, bool, NULL, 0444);
42 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
43
44 static int snd_us122l_card_used[SNDRV_CARDS];
45
46
us122l_create_usbmidi(struct snd_card * card)47 static int us122l_create_usbmidi(struct snd_card *card)
48 {
49 static struct snd_usb_midi_endpoint_info quirk_data = {
50 .out_ep = 4,
51 .in_ep = 3,
52 .out_cables = 0x001,
53 .in_cables = 0x001
54 };
55 static struct snd_usb_audio_quirk quirk = {
56 .vendor_name = "US122L",
57 .product_name = NAME_ALLCAPS,
58 .ifnum = 1,
59 .type = QUIRK_MIDI_US122L,
60 .data = &quirk_data
61 };
62 struct usb_device *dev = US122L(card)->chip.dev;
63 struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
64
65 return snd_usb_create_midi_interface(&US122L(card)->chip,
66 iface, &quirk);
67 }
68
69 /*
70 * Wrapper for usb_control_msg().
71 * Allocates a temp buffer to prevent dmaing from/to the stack.
72 */
us122l_ctl_msg(struct usb_device * dev,unsigned int pipe,__u8 request,__u8 requesttype,__u16 value,__u16 index,void * data,__u16 size,int timeout)73 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
74 __u8 request, __u8 requesttype,
75 __u16 value, __u16 index, void *data,
76 __u16 size, int timeout)
77 {
78 int err;
79 void *buf = NULL;
80
81 if (size > 0) {
82 buf = kmemdup(data, size, GFP_KERNEL);
83 if (!buf)
84 return -ENOMEM;
85 }
86 err = usb_control_msg(dev, pipe, request, requesttype,
87 value, index, buf, size, timeout);
88 if (size > 0) {
89 memcpy(data, buf, size);
90 kfree(buf);
91 }
92 return err;
93 }
94
pt_info_set(struct usb_device * dev,u8 v)95 static void pt_info_set(struct usb_device *dev, u8 v)
96 {
97 int ret;
98
99 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
100 'I',
101 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
102 v, 0, NULL, 0, 1000);
103 snd_printdd(KERN_DEBUG "%i\n", ret);
104 }
105
usb_stream_hwdep_vm_open(struct vm_area_struct * area)106 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
107 {
108 struct us122l *us122l = area->vm_private_data;
109 atomic_inc(&us122l->mmap_count);
110 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
111 }
112
usb_stream_hwdep_vm_fault(struct vm_area_struct * area,struct vm_fault * vmf)113 static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
114 struct vm_fault *vmf)
115 {
116 unsigned long offset;
117 struct page *page;
118 void *vaddr;
119 struct us122l *us122l = area->vm_private_data;
120 struct usb_stream *s;
121
122 mutex_lock(&us122l->mutex);
123 s = us122l->sk.s;
124 if (!s)
125 goto unlock;
126
127 offset = vmf->pgoff << PAGE_SHIFT;
128 if (offset < PAGE_ALIGN(s->read_size))
129 vaddr = (char *)s + offset;
130 else {
131 offset -= PAGE_ALIGN(s->read_size);
132 if (offset >= PAGE_ALIGN(s->write_size))
133 goto unlock;
134
135 vaddr = us122l->sk.write_page + offset;
136 }
137 page = virt_to_page(vaddr);
138
139 get_page(page);
140 mutex_unlock(&us122l->mutex);
141
142 vmf->page = page;
143
144 return 0;
145 unlock:
146 mutex_unlock(&us122l->mutex);
147 return VM_FAULT_SIGBUS;
148 }
149
usb_stream_hwdep_vm_close(struct vm_area_struct * area)150 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
151 {
152 struct us122l *us122l = area->vm_private_data;
153 atomic_dec(&us122l->mmap_count);
154 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
155 }
156
157 static struct vm_operations_struct usb_stream_hwdep_vm_ops = {
158 .open = usb_stream_hwdep_vm_open,
159 .fault = usb_stream_hwdep_vm_fault,
160 .close = usb_stream_hwdep_vm_close,
161 };
162
163
usb_stream_hwdep_open(struct snd_hwdep * hw,struct file * file)164 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
165 {
166 struct us122l *us122l = hw->private_data;
167 struct usb_interface *iface;
168 snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
169 if (hw->used >= 2)
170 return -EBUSY;
171
172 if (!us122l->first)
173 us122l->first = file;
174 iface = usb_ifnum_to_if(us122l->chip.dev, 1);
175 usb_autopm_get_interface(iface);
176 return 0;
177 }
178
usb_stream_hwdep_release(struct snd_hwdep * hw,struct file * file)179 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
180 {
181 struct us122l *us122l = hw->private_data;
182 struct usb_interface *iface = usb_ifnum_to_if(us122l->chip.dev, 1);
183 snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
184 usb_autopm_put_interface(iface);
185 if (us122l->first == file)
186 us122l->first = NULL;
187 mutex_lock(&us122l->mutex);
188 if (us122l->master == file)
189 us122l->master = us122l->slave;
190
191 us122l->slave = NULL;
192 mutex_unlock(&us122l->mutex);
193 return 0;
194 }
195
usb_stream_hwdep_mmap(struct snd_hwdep * hw,struct file * filp,struct vm_area_struct * area)196 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
197 struct file *filp, struct vm_area_struct *area)
198 {
199 unsigned long size = area->vm_end - area->vm_start;
200 struct us122l *us122l = hw->private_data;
201 unsigned long offset;
202 struct usb_stream *s;
203 int err = 0;
204 bool read;
205
206 offset = area->vm_pgoff << PAGE_SHIFT;
207 mutex_lock(&us122l->mutex);
208 s = us122l->sk.s;
209 read = offset < s->read_size;
210 if (read && area->vm_flags & VM_WRITE) {
211 err = -EPERM;
212 goto out;
213 }
214 snd_printdd(KERN_DEBUG "%lu %u\n", size,
215 read ? s->read_size : s->write_size);
216 /* if userspace tries to mmap beyond end of our buffer, fail */
217 if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
218 snd_printk(KERN_WARNING "%lu > %u\n", size,
219 read ? s->read_size : s->write_size);
220 err = -EINVAL;
221 goto out;
222 }
223
224 area->vm_ops = &usb_stream_hwdep_vm_ops;
225 area->vm_flags |= VM_RESERVED;
226 area->vm_private_data = us122l;
227 atomic_inc(&us122l->mmap_count);
228 out:
229 mutex_unlock(&us122l->mutex);
230 return err;
231 }
232
usb_stream_hwdep_poll(struct snd_hwdep * hw,struct file * file,poll_table * wait)233 static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
234 struct file *file, poll_table *wait)
235 {
236 struct us122l *us122l = hw->private_data;
237 struct usb_stream *s = us122l->sk.s;
238 unsigned *polled;
239 unsigned int mask;
240
241 poll_wait(file, &us122l->sk.sleep, wait);
242
243 switch (s->state) {
244 case usb_stream_ready:
245 if (us122l->first == file)
246 polled = &s->periods_polled;
247 else
248 polled = &us122l->second_periods_polled;
249 if (*polled != s->periods_done) {
250 *polled = s->periods_done;
251 mask = POLLIN | POLLOUT | POLLWRNORM;
252 break;
253 }
254 /* Fall through */
255 mask = 0;
256 break;
257 default:
258 mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
259 break;
260 }
261 return mask;
262 }
263
us122l_stop(struct us122l * us122l)264 static void us122l_stop(struct us122l *us122l)
265 {
266 struct list_head *p;
267 list_for_each(p, &us122l->chip.midi_list)
268 snd_usbmidi_input_stop(p);
269
270 usb_stream_stop(&us122l->sk);
271 usb_stream_free(&us122l->sk);
272 }
273
us122l_set_sample_rate(struct usb_device * dev,int rate)274 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
275 {
276 unsigned int ep = 0x81;
277 unsigned char data[3];
278 int err;
279
280 data[0] = rate;
281 data[1] = rate >> 8;
282 data[2] = rate >> 16;
283 err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
284 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
285 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000);
286 if (err < 0)
287 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
288 dev->devnum, rate, ep);
289 return err;
290 }
291
us122l_start(struct us122l * us122l,unsigned rate,unsigned period_frames)292 static bool us122l_start(struct us122l *us122l,
293 unsigned rate, unsigned period_frames)
294 {
295 struct list_head *p;
296 int err;
297 unsigned use_packsize = 0;
298 bool success = false;
299
300 if (us122l->chip.dev->speed == USB_SPEED_HIGH) {
301 /* The us-122l's descriptor defaults to iso max_packsize 78,
302 which isn't needed for samplerates <= 48000.
303 Lets save some memory:
304 */
305 switch (rate) {
306 case 44100:
307 use_packsize = 36;
308 break;
309 case 48000:
310 use_packsize = 42;
311 break;
312 case 88200:
313 use_packsize = 72;
314 break;
315 }
316 }
317 if (!usb_stream_new(&us122l->sk, us122l->chip.dev, 1, 2,
318 rate, use_packsize, period_frames, 6))
319 goto out;
320
321 err = us122l_set_sample_rate(us122l->chip.dev, rate);
322 if (err < 0) {
323 us122l_stop(us122l);
324 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
325 goto out;
326 }
327 err = usb_stream_start(&us122l->sk);
328 if (err < 0) {
329 us122l_stop(us122l);
330 snd_printk(KERN_ERR "us122l_start error %i \n", err);
331 goto out;
332 }
333 list_for_each(p, &us122l->chip.midi_list)
334 snd_usbmidi_input_start(p);
335 success = true;
336 out:
337 return success;
338 }
339
usb_stream_hwdep_ioctl(struct snd_hwdep * hw,struct file * file,unsigned cmd,unsigned long arg)340 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
341 unsigned cmd, unsigned long arg)
342 {
343 struct usb_stream_config *cfg;
344 struct us122l *us122l = hw->private_data;
345 unsigned min_period_frames;
346 int err = 0;
347 bool high_speed;
348
349 if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
350 return -ENOTTY;
351
352 cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
353 if (!cfg)
354 return -ENOMEM;
355
356 if (copy_from_user(cfg, (void *)arg, sizeof(*cfg))) {
357 err = -EFAULT;
358 goto free;
359 }
360 if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
361 err = -ENXIO;
362 goto free;
363 }
364 high_speed = us122l->chip.dev->speed == USB_SPEED_HIGH;
365 if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000 &&
366 (!high_speed ||
367 (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
368 cfg->frame_size != 6 ||
369 cfg->period_frames > 0x3000) {
370 err = -EINVAL;
371 goto free;
372 }
373 switch (cfg->sample_rate) {
374 case 44100:
375 min_period_frames = 48;
376 break;
377 case 48000:
378 min_period_frames = 52;
379 break;
380 default:
381 min_period_frames = 104;
382 break;
383 }
384 if (!high_speed)
385 min_period_frames <<= 1;
386 if (cfg->period_frames < min_period_frames) {
387 err = -EINVAL;
388 goto free;
389 }
390
391 snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
392
393 mutex_lock(&us122l->mutex);
394 if (!us122l->master)
395 us122l->master = file;
396 else if (us122l->master != file) {
397 if (memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg))) {
398 err = -EIO;
399 goto unlock;
400 }
401 us122l->slave = file;
402 }
403 if (!us122l->sk.s ||
404 memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg)) ||
405 us122l->sk.s->state == usb_stream_xrun) {
406 us122l_stop(us122l);
407 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
408 err = -EIO;
409 else
410 err = 1;
411 }
412 unlock:
413 mutex_unlock(&us122l->mutex);
414 free:
415 kfree(cfg);
416 return err;
417 }
418
419 #define SND_USB_STREAM_ID "USB STREAM"
usb_stream_hwdep_new(struct snd_card * card)420 static int usb_stream_hwdep_new(struct snd_card *card)
421 {
422 int err;
423 struct snd_hwdep *hw;
424 struct usb_device *dev = US122L(card)->chip.dev;
425
426 err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
427 if (err < 0)
428 return err;
429
430 hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
431 hw->private_data = US122L(card);
432 hw->ops.open = usb_stream_hwdep_open;
433 hw->ops.release = usb_stream_hwdep_release;
434 hw->ops.ioctl = usb_stream_hwdep_ioctl;
435 hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
436 hw->ops.mmap = usb_stream_hwdep_mmap;
437 hw->ops.poll = usb_stream_hwdep_poll;
438
439 sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm",
440 dev->bus->busnum, dev->devnum);
441 return 0;
442 }
443
444
us122l_create_card(struct snd_card * card)445 static bool us122l_create_card(struct snd_card *card)
446 {
447 int err;
448 struct us122l *us122l = US122L(card);
449
450 err = usb_set_interface(us122l->chip.dev, 1, 1);
451 if (err) {
452 snd_printk(KERN_ERR "usb_set_interface error \n");
453 return false;
454 }
455
456 pt_info_set(us122l->chip.dev, 0x11);
457 pt_info_set(us122l->chip.dev, 0x10);
458
459 if (!us122l_start(us122l, 44100, 256))
460 return false;
461
462 err = us122l_create_usbmidi(card);
463 if (err < 0) {
464 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
465 us122l_stop(us122l);
466 return false;
467 }
468 err = usb_stream_hwdep_new(card);
469 if (err < 0) {
470 /* release the midi resources */
471 struct list_head *p;
472 list_for_each(p, &us122l->chip.midi_list)
473 snd_usbmidi_disconnect(p);
474
475 us122l_stop(us122l);
476 return false;
477 }
478 return true;
479 }
480
usx2y_create_card(struct usb_device * device)481 static struct snd_card *usx2y_create_card(struct usb_device *device)
482 {
483 int dev;
484 struct snd_card *card;
485 for (dev = 0; dev < SNDRV_CARDS; ++dev)
486 if (enable[dev] && !snd_us122l_card_used[dev])
487 break;
488 if (dev >= SNDRV_CARDS)
489 return NULL;
490 card = snd_card_new(index[dev], id[dev], THIS_MODULE,
491 sizeof(struct us122l));
492 if (!card)
493 return NULL;
494 snd_us122l_card_used[US122L(card)->chip.index = dev] = 1;
495
496 US122L(card)->chip.dev = device;
497 US122L(card)->chip.card = card;
498 mutex_init(&US122L(card)->mutex);
499 init_waitqueue_head(&US122L(card)->sk.sleep);
500 INIT_LIST_HEAD(&US122L(card)->chip.midi_list);
501 strcpy(card->driver, "USB "NAME_ALLCAPS"");
502 sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
503 sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
504 card->shortname,
505 le16_to_cpu(device->descriptor.idVendor),
506 le16_to_cpu(device->descriptor.idProduct),
507 0,
508 US122L(card)->chip.dev->bus->busnum,
509 US122L(card)->chip.dev->devnum
510 );
511 snd_card_set_dev(card, &device->dev);
512 return card;
513 }
514
us122l_usb_probe(struct usb_interface * intf,const struct usb_device_id * device_id)515 static void *us122l_usb_probe(struct usb_interface *intf,
516 const struct usb_device_id *device_id)
517 {
518 struct usb_device *device = interface_to_usbdev(intf);
519 struct snd_card *card = usx2y_create_card(device);
520
521 if (!card)
522 return NULL;
523
524 if (!us122l_create_card(card) ||
525 snd_card_register(card) < 0) {
526 snd_card_free(card);
527 return NULL;
528 }
529
530 usb_get_dev(device);
531 return card;
532 }
533
snd_us122l_probe(struct usb_interface * intf,const struct usb_device_id * id)534 static int snd_us122l_probe(struct usb_interface *intf,
535 const struct usb_device_id *id)
536 {
537 struct snd_card *card;
538 snd_printdd(KERN_DEBUG"%p:%i\n",
539 intf, intf->cur_altsetting->desc.bInterfaceNumber);
540 if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
541 return 0;
542
543 card = us122l_usb_probe(usb_get_intf(intf), id);
544
545 if (card) {
546 usb_set_intfdata(intf, card);
547 return 0;
548 }
549
550 usb_put_intf(intf);
551 return -EIO;
552 }
553
snd_us122l_disconnect(struct usb_interface * intf)554 static void snd_us122l_disconnect(struct usb_interface *intf)
555 {
556 struct snd_card *card;
557 struct us122l *us122l;
558 struct list_head *p;
559
560 card = usb_get_intfdata(intf);
561 if (!card)
562 return;
563
564 snd_card_disconnect(card);
565
566 us122l = US122L(card);
567 mutex_lock(&us122l->mutex);
568 us122l_stop(us122l);
569 mutex_unlock(&us122l->mutex);
570 us122l->chip.shutdown = 1;
571
572 /* release the midi resources */
573 list_for_each(p, &us122l->chip.midi_list) {
574 snd_usbmidi_disconnect(p);
575 }
576
577 usb_put_intf(intf);
578 usb_put_dev(US122L(card)->chip.dev);
579
580 while (atomic_read(&us122l->mmap_count))
581 msleep(500);
582
583 snd_card_free(card);
584 }
585
snd_us122l_suspend(struct usb_interface * intf,pm_message_t message)586 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
587 {
588 struct snd_card *card;
589 struct us122l *us122l;
590 struct list_head *p;
591
592 card = usb_get_intfdata(intf);
593 if (!card)
594 return 0;
595 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
596
597 us122l = US122L(card);
598 if (!us122l)
599 return 0;
600
601 list_for_each(p, &us122l->chip.midi_list)
602 snd_usbmidi_input_stop(p);
603
604 mutex_lock(&us122l->mutex);
605 usb_stream_stop(&us122l->sk);
606 mutex_unlock(&us122l->mutex);
607
608 return 0;
609 }
610
snd_us122l_resume(struct usb_interface * intf)611 static int snd_us122l_resume(struct usb_interface *intf)
612 {
613 struct snd_card *card;
614 struct us122l *us122l;
615 struct list_head *p;
616 int err;
617
618 card = usb_get_intfdata(intf);
619 if (!card)
620 return 0;
621
622 us122l = US122L(card);
623 if (!us122l)
624 return 0;
625
626 mutex_lock(&us122l->mutex);
627 /* needed, doesn't restart without: */
628 err = usb_set_interface(us122l->chip.dev, 1, 1);
629 if (err) {
630 snd_printk(KERN_ERR "usb_set_interface error \n");
631 goto unlock;
632 }
633
634 pt_info_set(us122l->chip.dev, 0x11);
635 pt_info_set(us122l->chip.dev, 0x10);
636
637 err = us122l_set_sample_rate(us122l->chip.dev,
638 us122l->sk.s->cfg.sample_rate);
639 if (err < 0) {
640 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
641 goto unlock;
642 }
643 err = usb_stream_start(&us122l->sk);
644 if (err)
645 goto unlock;
646
647 list_for_each(p, &us122l->chip.midi_list)
648 snd_usbmidi_input_start(p);
649 unlock:
650 mutex_unlock(&us122l->mutex);
651 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
652 return err;
653 }
654
655 static struct usb_device_id snd_us122l_usb_id_table[] = {
656 {
657 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
658 .idVendor = 0x0644,
659 .idProduct = USB_ID_US122L
660 },
661 /* { */ /* US-144 maybe works when @USB1.1. Untested. */
662 /* .match_flags = USB_DEVICE_ID_MATCH_DEVICE, */
663 /* .idVendor = 0x0644, */
664 /* .idProduct = USB_ID_US144 */
665 /* }, */
666 { /* terminator */ }
667 };
668
669 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
670 static struct usb_driver snd_us122l_usb_driver = {
671 .name = "snd-usb-us122l",
672 .probe = snd_us122l_probe,
673 .disconnect = snd_us122l_disconnect,
674 .suspend = snd_us122l_suspend,
675 .resume = snd_us122l_resume,
676 .reset_resume = snd_us122l_resume,
677 .id_table = snd_us122l_usb_id_table,
678 .supports_autosuspend = 1
679 };
680
681
snd_us122l_module_init(void)682 static int __init snd_us122l_module_init(void)
683 {
684 return usb_register(&snd_us122l_usb_driver);
685 }
686
snd_us122l_module_exit(void)687 static void __exit snd_us122l_module_exit(void)
688 {
689 usb_deregister(&snd_us122l_usb_driver);
690 }
691
692 module_init(snd_us122l_module_init)
693 module_exit(snd_us122l_module_exit)
694