1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de> 4 */ 5 6#include <linux/slab.h> 7#include <linux/usb.h> 8#include <linux/usb/audio.h> 9#include <linux/module.h> 10#include <sound/core.h> 11#include <sound/hwdep.h> 12#include <sound/pcm.h> 13#include <sound/initval.h> 14#define MODNAME "US122L" 15#include "usb_stream.c" 16#include "../usbaudio.h" 17#include "../midi.h" 18#include "us122l.h" 19 20MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>"); 21MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5"); 22MODULE_LICENSE("GPL"); 23 24static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ 25static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ 26 /* Enable this card */ 27static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 28 29module_param_array(index, int, NULL, 0444); 30MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS"."); 31module_param_array(id, charp, NULL, 0444); 32MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS"."); 33module_param_array(enable, bool, NULL, 0444); 34MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS"."); 35 36/* driver_info flags */ 37#define US122L_FLAG_US144 BIT(0) 38 39static int snd_us122l_card_used[SNDRV_CARDS]; 40 41static int us122l_create_usbmidi(struct snd_card *card) 42{ 43 static const struct snd_usb_midi_endpoint_info quirk_data = { 44 .out_ep = 4, 45 .in_ep = 3, 46 .out_cables = 0x001, 47 .in_cables = 0x001 48 }; 49 static const struct snd_usb_audio_quirk quirk = { 50 .vendor_name = "US122L", 51 .product_name = NAME_ALLCAPS, 52 .ifnum = 1, 53 .type = QUIRK_MIDI_US122L, 54 .data = &quirk_data 55 }; 56 struct usb_device *dev = US122L(card)->dev; 57 struct usb_interface *iface = usb_ifnum_to_if(dev, 1); 58 59 return snd_usbmidi_create(card, iface, 60 &US122L(card)->midi_list, &quirk); 61} 62 63static int us144_create_usbmidi(struct snd_card *card) 64{ 65 static const struct snd_usb_midi_endpoint_info quirk_data = { 66 .out_ep = 4, 67 .in_ep = 3, 68 .out_cables = 0x001, 69 .in_cables = 0x001 70 }; 71 static const struct snd_usb_audio_quirk quirk = { 72 .vendor_name = "US144", 73 .product_name = NAME_ALLCAPS, 74 .ifnum = 0, 75 .type = QUIRK_MIDI_US122L, 76 .data = &quirk_data 77 }; 78 struct usb_device *dev = US122L(card)->dev; 79 struct usb_interface *iface = usb_ifnum_to_if(dev, 0); 80 81 return snd_usbmidi_create(card, iface, 82 &US122L(card)->midi_list, &quirk); 83} 84 85static void pt_info_set(struct usb_device *dev, u8 v) 86{ 87 int ret; 88 89 ret = usb_control_msg_send(dev, 0, 'I', 90 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 91 v, 0, NULL, 0, 1000, GFP_NOIO); 92 snd_printdd(KERN_DEBUG "%i\n", ret); 93} 94 95static void usb_stream_hwdep_vm_open(struct vm_area_struct *area) 96{ 97 struct us122l *us122l = area->vm_private_data; 98 atomic_inc(&us122l->mmap_count); 99 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); 100} 101 102static vm_fault_t usb_stream_hwdep_vm_fault(struct vm_fault *vmf) 103{ 104 unsigned long offset; 105 struct page *page; 106 void *vaddr; 107 struct us122l *us122l = vmf->vma->vm_private_data; 108 struct usb_stream *s; 109 110 mutex_lock(&us122l->mutex); 111 s = us122l->sk.s; 112 if (!s) 113 goto unlock; 114 115 offset = vmf->pgoff << PAGE_SHIFT; 116 if (offset < PAGE_ALIGN(s->read_size)) 117 vaddr = (char *)s + offset; 118 else { 119 offset -= PAGE_ALIGN(s->read_size); 120 if (offset >= PAGE_ALIGN(s->write_size)) 121 goto unlock; 122 123 vaddr = us122l->sk.write_page + offset; 124 } 125 page = virt_to_page(vaddr); 126 127 get_page(page); 128 mutex_unlock(&us122l->mutex); 129 130 vmf->page = page; 131 132 return 0; 133unlock: 134 mutex_unlock(&us122l->mutex); 135 return VM_FAULT_SIGBUS; 136} 137 138static void usb_stream_hwdep_vm_close(struct vm_area_struct *area) 139{ 140 struct us122l *us122l = area->vm_private_data; 141 atomic_dec(&us122l->mmap_count); 142 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); 143} 144 145static const struct vm_operations_struct usb_stream_hwdep_vm_ops = { 146 .open = usb_stream_hwdep_vm_open, 147 .fault = usb_stream_hwdep_vm_fault, 148 .close = usb_stream_hwdep_vm_close, 149}; 150 151 152static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file) 153{ 154 struct us122l *us122l = hw->private_data; 155 struct usb_interface *iface; 156 snd_printdd(KERN_DEBUG "%p %p\n", hw, file); 157 if (hw->used >= 2) 158 return -EBUSY; 159 160 if (!us122l->first) 161 us122l->first = file; 162 163 if (us122l->is_us144) { 164 iface = usb_ifnum_to_if(us122l->dev, 0); 165 usb_autopm_get_interface(iface); 166 } 167 iface = usb_ifnum_to_if(us122l->dev, 1); 168 usb_autopm_get_interface(iface); 169 return 0; 170} 171 172static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file) 173{ 174 struct us122l *us122l = hw->private_data; 175 struct usb_interface *iface; 176 snd_printdd(KERN_DEBUG "%p %p\n", hw, file); 177 178 if (us122l->is_us144) { 179 iface = usb_ifnum_to_if(us122l->dev, 0); 180 usb_autopm_put_interface(iface); 181 } 182 iface = usb_ifnum_to_if(us122l->dev, 1); 183 usb_autopm_put_interface(iface); 184 if (us122l->first == file) 185 us122l->first = NULL; 186 mutex_lock(&us122l->mutex); 187 if (us122l->master == file) 188 us122l->master = us122l->slave; 189 190 us122l->slave = NULL; 191 mutex_unlock(&us122l->mutex); 192 return 0; 193} 194 195static int usb_stream_hwdep_mmap(struct snd_hwdep *hw, 196 struct file *filp, struct vm_area_struct *area) 197{ 198 unsigned long size = area->vm_end - area->vm_start; 199 struct us122l *us122l = hw->private_data; 200 unsigned long offset; 201 struct usb_stream *s; 202 int err = 0; 203 bool read; 204 205 offset = area->vm_pgoff << PAGE_SHIFT; 206 mutex_lock(&us122l->mutex); 207 s = us122l->sk.s; 208 read = offset < s->read_size; 209 if (read && area->vm_flags & VM_WRITE) { 210 err = -EPERM; 211 goto out; 212 } 213 snd_printdd(KERN_DEBUG "%lu %u\n", size, 214 read ? s->read_size : s->write_size); 215 /* if userspace tries to mmap beyond end of our buffer, fail */ 216 if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) { 217 snd_printk(KERN_WARNING "%lu > %u\n", size, 218 read ? s->read_size : s->write_size); 219 err = -EINVAL; 220 goto out; 221 } 222 223 area->vm_ops = &usb_stream_hwdep_vm_ops; 224 area->vm_flags |= VM_DONTDUMP; 225 if (!read) 226 area->vm_flags |= VM_DONTEXPAND; 227 area->vm_private_data = us122l; 228 atomic_inc(&us122l->mmap_count); 229out: 230 mutex_unlock(&us122l->mutex); 231 return err; 232} 233 234static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw, 235 struct file *file, poll_table *wait) 236{ 237 struct us122l *us122l = hw->private_data; 238 unsigned *polled; 239 __poll_t mask; 240 241 poll_wait(file, &us122l->sk.sleep, wait); 242 243 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR; 244 if (mutex_trylock(&us122l->mutex)) { 245 struct usb_stream *s = us122l->sk.s; 246 if (s && s->state == usb_stream_ready) { 247 if (us122l->first == file) 248 polled = &s->periods_polled; 249 else 250 polled = &us122l->second_periods_polled; 251 if (*polled != s->periods_done) { 252 *polled = s->periods_done; 253 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM; 254 } else 255 mask = 0; 256 } 257 mutex_unlock(&us122l->mutex); 258 } 259 return mask; 260} 261 262static void us122l_stop(struct us122l *us122l) 263{ 264 struct list_head *p; 265 list_for_each(p, &us122l->midi_list) 266 snd_usbmidi_input_stop(p); 267 268 usb_stream_stop(&us122l->sk); 269 usb_stream_free(&us122l->sk); 270} 271 272static int us122l_set_sample_rate(struct usb_device *dev, int rate) 273{ 274 unsigned int ep = 0x81; 275 unsigned char data[3]; 276 int err; 277 278 data[0] = rate; 279 data[1] = rate >> 8; 280 data[2] = rate >> 16; 281 err = usb_control_msg_send(dev, 0, UAC_SET_CUR, 282 USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, 283 UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 284 1000, GFP_NOIO); 285 if (err) 286 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n", 287 dev->devnum, rate, ep); 288 return err; 289} 290 291static bool us122l_start(struct us122l *us122l, 292 unsigned rate, unsigned period_frames) 293{ 294 struct list_head *p; 295 int err; 296 unsigned use_packsize = 0; 297 bool success = false; 298 299 if (us122l->dev->speed == USB_SPEED_HIGH) { 300 /* The us-122l's descriptor defaults to iso max_packsize 78, 301 which isn't needed for samplerates <= 48000. 302 Lets save some memory: 303 */ 304 switch (rate) { 305 case 44100: 306 use_packsize = 36; 307 break; 308 case 48000: 309 use_packsize = 42; 310 break; 311 case 88200: 312 use_packsize = 72; 313 break; 314 } 315 } 316 if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2, 317 rate, use_packsize, period_frames, 6)) 318 goto out; 319 320 err = us122l_set_sample_rate(us122l->dev, rate); 321 if (err < 0) { 322 us122l_stop(us122l); 323 snd_printk(KERN_ERR "us122l_set_sample_rate error \n"); 324 goto out; 325 } 326 err = usb_stream_start(&us122l->sk); 327 if (err < 0) { 328 us122l_stop(us122l); 329 snd_printk(KERN_ERR "us122l_start error %i \n", err); 330 goto out; 331 } 332 list_for_each(p, &us122l->midi_list) 333 snd_usbmidi_input_start(p); 334 success = true; 335out: 336 return success; 337} 338 339static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, 340 unsigned cmd, unsigned long arg) 341{ 342 struct usb_stream_config cfg; 343 struct us122l *us122l = hw->private_data; 344 struct usb_stream *s; 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 if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg))) 353 return -EFAULT; 354 355 if (cfg.version != USB_STREAM_INTERFACE_VERSION) 356 return -ENXIO; 357 358 high_speed = us122l->dev->speed == USB_SPEED_HIGH; 359 if ((cfg.sample_rate != 44100 && cfg.sample_rate != 48000 && 360 (!high_speed || 361 (cfg.sample_rate != 88200 && cfg.sample_rate != 96000))) || 362 cfg.frame_size != 6 || 363 cfg.period_frames > 0x3000) 364 return -EINVAL; 365 366 switch (cfg.sample_rate) { 367 case 44100: 368 min_period_frames = 48; 369 break; 370 case 48000: 371 min_period_frames = 52; 372 break; 373 default: 374 min_period_frames = 104; 375 break; 376 } 377 if (!high_speed) 378 min_period_frames <<= 1; 379 if (cfg.period_frames < min_period_frames) 380 return -EINVAL; 381 382 snd_power_wait(hw->card, SNDRV_CTL_POWER_D0); 383 384 mutex_lock(&us122l->mutex); 385 s = us122l->sk.s; 386 if (!us122l->master) 387 us122l->master = file; 388 else if (us122l->master != file) { 389 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) { 390 err = -EIO; 391 goto unlock; 392 } 393 us122l->slave = file; 394 } 395 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) || 396 s->state == usb_stream_xrun) { 397 us122l_stop(us122l); 398 if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames)) 399 err = -EIO; 400 else 401 err = 1; 402 } 403unlock: 404 mutex_unlock(&us122l->mutex); 405 wake_up_all(&us122l->sk.sleep); 406 return err; 407} 408 409#define SND_USB_STREAM_ID "USB STREAM" 410static int usb_stream_hwdep_new(struct snd_card *card) 411{ 412 int err; 413 struct snd_hwdep *hw; 414 struct usb_device *dev = US122L(card)->dev; 415 416 err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw); 417 if (err < 0) 418 return err; 419 420 hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM; 421 hw->private_data = US122L(card); 422 hw->ops.open = usb_stream_hwdep_open; 423 hw->ops.release = usb_stream_hwdep_release; 424 hw->ops.ioctl = usb_stream_hwdep_ioctl; 425 hw->ops.ioctl_compat = usb_stream_hwdep_ioctl; 426 hw->ops.mmap = usb_stream_hwdep_mmap; 427 hw->ops.poll = usb_stream_hwdep_poll; 428 429 sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm", 430 dev->bus->busnum, dev->devnum); 431 return 0; 432} 433 434 435static bool us122l_create_card(struct snd_card *card) 436{ 437 int err; 438 struct us122l *us122l = US122L(card); 439 440 if (us122l->is_us144) { 441 err = usb_set_interface(us122l->dev, 0, 1); 442 if (err) { 443 snd_printk(KERN_ERR "usb_set_interface error \n"); 444 return false; 445 } 446 } 447 err = usb_set_interface(us122l->dev, 1, 1); 448 if (err) { 449 snd_printk(KERN_ERR "usb_set_interface error \n"); 450 return false; 451 } 452 453 pt_info_set(us122l->dev, 0x11); 454 pt_info_set(us122l->dev, 0x10); 455 456 if (!us122l_start(us122l, 44100, 256)) 457 return false; 458 459 if (us122l->is_us144) 460 err = us144_create_usbmidi(card); 461 else 462 err = us122l_create_usbmidi(card); 463 if (err < 0) { 464 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err); 465 goto stop; 466 } 467 err = usb_stream_hwdep_new(card); 468 if (err < 0) { 469/* release the midi resources */ 470 struct list_head *p; 471 list_for_each(p, &us122l->midi_list) 472 snd_usbmidi_disconnect(p); 473 474 goto stop; 475 } 476 return true; 477 478stop: 479 us122l_stop(us122l); 480 return false; 481} 482 483static void snd_us122l_free(struct snd_card *card) 484{ 485 struct us122l *us122l = US122L(card); 486 int index = us122l->card_index; 487 if (index >= 0 && index < SNDRV_CARDS) 488 snd_us122l_card_used[index] = 0; 489} 490 491static int usx2y_create_card(struct usb_device *device, 492 struct usb_interface *intf, 493 struct snd_card **cardp, 494 unsigned long flags) 495{ 496 int dev; 497 struct snd_card *card; 498 int err; 499 500 for (dev = 0; dev < SNDRV_CARDS; ++dev) 501 if (enable[dev] && !snd_us122l_card_used[dev]) 502 break; 503 if (dev >= SNDRV_CARDS) 504 return -ENODEV; 505 err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE, 506 sizeof(struct us122l), &card); 507 if (err < 0) 508 return err; 509 snd_us122l_card_used[US122L(card)->card_index = dev] = 1; 510 card->private_free = snd_us122l_free; 511 US122L(card)->dev = device; 512 mutex_init(&US122L(card)->mutex); 513 init_waitqueue_head(&US122L(card)->sk.sleep); 514 US122L(card)->is_us144 = flags & US122L_FLAG_US144; 515 INIT_LIST_HEAD(&US122L(card)->midi_list); 516 strcpy(card->driver, "USB "NAME_ALLCAPS""); 517 sprintf(card->shortname, "TASCAM "NAME_ALLCAPS""); 518 sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)", 519 card->shortname, 520 le16_to_cpu(device->descriptor.idVendor), 521 le16_to_cpu(device->descriptor.idProduct), 522 0, 523 US122L(card)->dev->bus->busnum, 524 US122L(card)->dev->devnum 525 ); 526 *cardp = card; 527 return 0; 528} 529 530static int us122l_usb_probe(struct usb_interface *intf, 531 const struct usb_device_id *device_id, 532 struct snd_card **cardp) 533{ 534 struct usb_device *device = interface_to_usbdev(intf); 535 struct snd_card *card; 536 int err; 537 538 err = usx2y_create_card(device, intf, &card, device_id->driver_info); 539 if (err < 0) 540 return err; 541 542 if (!us122l_create_card(card)) { 543 snd_card_free(card); 544 return -EINVAL; 545 } 546 547 err = snd_card_register(card); 548 if (err < 0) { 549 snd_card_free(card); 550 return err; 551 } 552 553 usb_get_intf(usb_ifnum_to_if(device, 0)); 554 usb_get_dev(device); 555 *cardp = card; 556 return 0; 557} 558 559static int snd_us122l_probe(struct usb_interface *intf, 560 const struct usb_device_id *id) 561{ 562 struct usb_device *device = interface_to_usbdev(intf); 563 struct snd_card *card; 564 int err; 565 566 if (id->driver_info & US122L_FLAG_US144 && 567 device->speed == USB_SPEED_HIGH) { 568 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n"); 569 return -ENODEV; 570 } 571 572 snd_printdd(KERN_DEBUG"%p:%i\n", 573 intf, intf->cur_altsetting->desc.bInterfaceNumber); 574 if (intf->cur_altsetting->desc.bInterfaceNumber != 1) 575 return 0; 576 577 err = us122l_usb_probe(usb_get_intf(intf), id, &card); 578 if (err < 0) { 579 usb_put_intf(intf); 580 return err; 581 } 582 583 usb_set_intfdata(intf, card); 584 return 0; 585} 586 587static void snd_us122l_disconnect(struct usb_interface *intf) 588{ 589 struct snd_card *card; 590 struct us122l *us122l; 591 struct list_head *p; 592 593 card = usb_get_intfdata(intf); 594 if (!card) 595 return; 596 597 snd_card_disconnect(card); 598 599 us122l = US122L(card); 600 mutex_lock(&us122l->mutex); 601 us122l_stop(us122l); 602 mutex_unlock(&us122l->mutex); 603 604/* release the midi resources */ 605 list_for_each(p, &us122l->midi_list) { 606 snd_usbmidi_disconnect(p); 607 } 608 609 usb_put_intf(usb_ifnum_to_if(us122l->dev, 0)); 610 usb_put_intf(usb_ifnum_to_if(us122l->dev, 1)); 611 usb_put_dev(us122l->dev); 612 613 while (atomic_read(&us122l->mmap_count)) 614 msleep(500); 615 616 snd_card_free(card); 617} 618 619static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message) 620{ 621 struct snd_card *card; 622 struct us122l *us122l; 623 struct list_head *p; 624 625 card = usb_get_intfdata(intf); 626 if (!card) 627 return 0; 628 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 629 630 us122l = US122L(card); 631 if (!us122l) 632 return 0; 633 634 list_for_each(p, &us122l->midi_list) 635 snd_usbmidi_input_stop(p); 636 637 mutex_lock(&us122l->mutex); 638 usb_stream_stop(&us122l->sk); 639 mutex_unlock(&us122l->mutex); 640 641 return 0; 642} 643 644static int snd_us122l_resume(struct usb_interface *intf) 645{ 646 struct snd_card *card; 647 struct us122l *us122l; 648 struct list_head *p; 649 int err; 650 651 card = usb_get_intfdata(intf); 652 if (!card) 653 return 0; 654 655 us122l = US122L(card); 656 if (!us122l) 657 return 0; 658 659 mutex_lock(&us122l->mutex); 660 /* needed, doesn't restart without: */ 661 if (us122l->is_us144) { 662 err = usb_set_interface(us122l->dev, 0, 1); 663 if (err) { 664 snd_printk(KERN_ERR "usb_set_interface error \n"); 665 goto unlock; 666 } 667 } 668 err = usb_set_interface(us122l->dev, 1, 1); 669 if (err) { 670 snd_printk(KERN_ERR "usb_set_interface error \n"); 671 goto unlock; 672 } 673 674 pt_info_set(us122l->dev, 0x11); 675 pt_info_set(us122l->dev, 0x10); 676 677 err = us122l_set_sample_rate(us122l->dev, 678 us122l->sk.s->cfg.sample_rate); 679 if (err < 0) { 680 snd_printk(KERN_ERR "us122l_set_sample_rate error \n"); 681 goto unlock; 682 } 683 err = usb_stream_start(&us122l->sk); 684 if (err) 685 goto unlock; 686 687 list_for_each(p, &us122l->midi_list) 688 snd_usbmidi_input_start(p); 689unlock: 690 mutex_unlock(&us122l->mutex); 691 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 692 return err; 693} 694 695static const struct usb_device_id snd_us122l_usb_id_table[] = { 696 { 697 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 698 .idVendor = 0x0644, 699 .idProduct = USB_ID_US122L 700 }, 701 { /* US-144 only works at USB1.1! Disable module ehci-hcd. */ 702 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 703 .idVendor = 0x0644, 704 .idProduct = USB_ID_US144, 705 .driver_info = US122L_FLAG_US144 706 }, 707 { 708 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 709 .idVendor = 0x0644, 710 .idProduct = USB_ID_US122MKII 711 }, 712 { 713 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 714 .idVendor = 0x0644, 715 .idProduct = USB_ID_US144MKII, 716 .driver_info = US122L_FLAG_US144 717 }, 718 { /* terminator */ } 719}; 720 721MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table); 722static struct usb_driver snd_us122l_usb_driver = { 723 .name = "snd-usb-us122l", 724 .probe = snd_us122l_probe, 725 .disconnect = snd_us122l_disconnect, 726 .suspend = snd_us122l_suspend, 727 .resume = snd_us122l_resume, 728 .reset_resume = snd_us122l_resume, 729 .id_table = snd_us122l_usb_id_table, 730 .supports_autosuspend = 1 731}; 732 733module_usb_driver(snd_us122l_usb_driver); 734