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 99 atomic_inc(&us122l->mmap_count); 100 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); 101} 102 103static vm_fault_t usb_stream_hwdep_vm_fault(struct vm_fault *vmf) 104{ 105 unsigned long offset; 106 struct page *page; 107 void *vaddr; 108 struct us122l *us122l = vmf->vma->vm_private_data; 109 struct usb_stream *s; 110 111 mutex_lock(&us122l->mutex); 112 s = us122l->sk.s; 113 if (!s) 114 goto unlock; 115 116 offset = vmf->pgoff << PAGE_SHIFT; 117 if (offset < PAGE_ALIGN(s->read_size)) { 118 vaddr = (char *)s + offset; 119 } else { 120 offset -= PAGE_ALIGN(s->read_size); 121 if (offset >= PAGE_ALIGN(s->write_size)) 122 goto unlock; 123 124 vaddr = us122l->sk.write_page + offset; 125 } 126 page = virt_to_page(vaddr); 127 128 get_page(page); 129 mutex_unlock(&us122l->mutex); 130 131 vmf->page = page; 132 133 return 0; 134unlock: 135 mutex_unlock(&us122l->mutex); 136 return VM_FAULT_SIGBUS; 137} 138 139static void usb_stream_hwdep_vm_close(struct vm_area_struct *area) 140{ 141 struct us122l *us122l = area->vm_private_data; 142 143 atomic_dec(&us122l->mmap_count); 144 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); 145} 146 147static const struct vm_operations_struct usb_stream_hwdep_vm_ops = { 148 .open = usb_stream_hwdep_vm_open, 149 .fault = usb_stream_hwdep_vm_fault, 150 .close = usb_stream_hwdep_vm_close, 151}; 152 153static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file) 154{ 155 struct us122l *us122l = hw->private_data; 156 struct usb_interface *iface; 157 158 snd_printdd(KERN_DEBUG "%p %p\n", hw, file); 159 if (hw->used >= 2) 160 return -EBUSY; 161 162 if (!us122l->first) 163 us122l->first = file; 164 165 if (us122l->is_us144) { 166 iface = usb_ifnum_to_if(us122l->dev, 0); 167 usb_autopm_get_interface(iface); 168 } 169 iface = usb_ifnum_to_if(us122l->dev, 1); 170 usb_autopm_get_interface(iface); 171 return 0; 172} 173 174static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file) 175{ 176 struct us122l *us122l = hw->private_data; 177 struct usb_interface *iface; 178 179 snd_printdd(KERN_DEBUG "%p %p\n", hw, file); 180 181 if (us122l->is_us144) { 182 iface = usb_ifnum_to_if(us122l->dev, 0); 183 usb_autopm_put_interface(iface); 184 } 185 iface = usb_ifnum_to_if(us122l->dev, 1); 186 usb_autopm_put_interface(iface); 187 if (us122l->first == file) 188 us122l->first = NULL; 189 mutex_lock(&us122l->mutex); 190 if (us122l->master == file) 191 us122l->master = us122l->slave; 192 193 us122l->slave = NULL; 194 mutex_unlock(&us122l->mutex); 195 return 0; 196} 197 198static int usb_stream_hwdep_mmap(struct snd_hwdep *hw, 199 struct file *filp, struct vm_area_struct *area) 200{ 201 unsigned long size = area->vm_end - area->vm_start; 202 struct us122l *us122l = hw->private_data; 203 unsigned long offset; 204 struct usb_stream *s; 205 int err = 0; 206 bool read; 207 208 offset = area->vm_pgoff << PAGE_SHIFT; 209 mutex_lock(&us122l->mutex); 210 s = us122l->sk.s; 211 read = offset < s->read_size; 212 if (read && area->vm_flags & VM_WRITE) { 213 err = -EPERM; 214 goto out; 215 } 216 snd_printdd(KERN_DEBUG "%lu %u\n", size, 217 read ? s->read_size : s->write_size); 218 /* if userspace tries to mmap beyond end of our buffer, fail */ 219 if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) { 220 snd_printk(KERN_WARNING "%lu > %u\n", size, 221 read ? s->read_size : s->write_size); 222 err = -EINVAL; 223 goto out; 224 } 225 226 area->vm_ops = &usb_stream_hwdep_vm_ops; 227 vm_flags_set(area, VM_DONTDUMP); 228 if (!read) 229 vm_flags_set(area, VM_DONTEXPAND); 230 area->vm_private_data = us122l; 231 atomic_inc(&us122l->mmap_count); 232out: 233 mutex_unlock(&us122l->mutex); 234 return err; 235} 236 237static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw, 238 struct file *file, poll_table *wait) 239{ 240 struct us122l *us122l = hw->private_data; 241 unsigned int *polled; 242 __poll_t mask; 243 244 poll_wait(file, &us122l->sk.sleep, wait); 245 246 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR; 247 if (mutex_trylock(&us122l->mutex)) { 248 struct usb_stream *s = us122l->sk.s; 249 250 if (s && s->state == usb_stream_ready) { 251 if (us122l->first == file) 252 polled = &s->periods_polled; 253 else 254 polled = &us122l->second_periods_polled; 255 if (*polled != s->periods_done) { 256 *polled = s->periods_done; 257 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM; 258 } else { 259 mask = 0; 260 } 261 } 262 mutex_unlock(&us122l->mutex); 263 } 264 return mask; 265} 266 267static void us122l_stop(struct us122l *us122l) 268{ 269 struct list_head *p; 270 271 list_for_each(p, &us122l->midi_list) 272 snd_usbmidi_input_stop(p); 273 274 usb_stream_stop(&us122l->sk); 275 usb_stream_free(&us122l->sk); 276} 277 278static int us122l_set_sample_rate(struct usb_device *dev, int rate) 279{ 280 unsigned int ep = 0x81; 281 unsigned char data[3]; 282 int err; 283 284 data[0] = rate; 285 data[1] = rate >> 8; 286 data[2] = rate >> 16; 287 err = usb_control_msg_send(dev, 0, UAC_SET_CUR, 288 USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, 289 UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 290 1000, GFP_NOIO); 291 if (err) 292 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n", 293 dev->devnum, rate, ep); 294 return err; 295} 296 297static bool us122l_start(struct us122l *us122l, 298 unsigned int rate, unsigned int period_frames) 299{ 300 struct list_head *p; 301 int err; 302 unsigned int use_packsize = 0; 303 bool success = false; 304 305 if (us122l->dev->speed == USB_SPEED_HIGH) { 306 /* The us-122l's descriptor defaults to iso max_packsize 78, 307 which isn't needed for samplerates <= 48000. 308 Lets save some memory: 309 */ 310 switch (rate) { 311 case 44100: 312 use_packsize = 36; 313 break; 314 case 48000: 315 use_packsize = 42; 316 break; 317 case 88200: 318 use_packsize = 72; 319 break; 320 } 321 } 322 if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2, 323 rate, use_packsize, period_frames, 6)) 324 goto out; 325 326 err = us122l_set_sample_rate(us122l->dev, rate); 327 if (err < 0) { 328 us122l_stop(us122l); 329 snd_printk(KERN_ERR "us122l_set_sample_rate error\n"); 330 goto out; 331 } 332 err = usb_stream_start(&us122l->sk); 333 if (err < 0) { 334 us122l_stop(us122l); 335 snd_printk(KERN_ERR "%s error %i\n", __func__, err); 336 goto out; 337 } 338 list_for_each(p, &us122l->midi_list) 339 snd_usbmidi_input_start(p); 340 success = true; 341out: 342 return success; 343} 344 345static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, 346 unsigned int cmd, unsigned long arg) 347{ 348 struct usb_stream_config cfg; 349 struct us122l *us122l = hw->private_data; 350 struct usb_stream *s; 351 unsigned int min_period_frames; 352 int err = 0; 353 bool high_speed; 354 355 if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS) 356 return -ENOTTY; 357 358 if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg))) 359 return -EFAULT; 360 361 if (cfg.version != USB_STREAM_INTERFACE_VERSION) 362 return -ENXIO; 363 364 high_speed = us122l->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 return -EINVAL; 371 372 switch (cfg.sample_rate) { 373 case 44100: 374 min_period_frames = 48; 375 break; 376 case 48000: 377 min_period_frames = 52; 378 break; 379 default: 380 min_period_frames = 104; 381 break; 382 } 383 if (!high_speed) 384 min_period_frames <<= 1; 385 if (cfg.period_frames < min_period_frames) 386 return -EINVAL; 387 388 snd_power_wait(hw->card); 389 390 mutex_lock(&us122l->mutex); 391 s = us122l->sk.s; 392 if (!us122l->master) { 393 us122l->master = file; 394 } else if (us122l->master != file) { 395 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) { 396 err = -EIO; 397 goto unlock; 398 } 399 us122l->slave = file; 400 } 401 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) || 402 s->state == usb_stream_xrun) { 403 us122l_stop(us122l); 404 if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames)) 405 err = -EIO; 406 else 407 err = 1; 408 } 409unlock: 410 mutex_unlock(&us122l->mutex); 411 wake_up_all(&us122l->sk.sleep); 412 return err; 413} 414 415#define SND_USB_STREAM_ID "USB STREAM" 416static int usb_stream_hwdep_new(struct snd_card *card) 417{ 418 int err; 419 struct snd_hwdep *hw; 420 struct usb_device *dev = US122L(card)->dev; 421 422 err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw); 423 if (err < 0) 424 return err; 425 426 hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM; 427 hw->private_data = US122L(card); 428 hw->ops.open = usb_stream_hwdep_open; 429 hw->ops.release = usb_stream_hwdep_release; 430 hw->ops.ioctl = usb_stream_hwdep_ioctl; 431 hw->ops.ioctl_compat = usb_stream_hwdep_ioctl; 432 hw->ops.mmap = usb_stream_hwdep_mmap; 433 hw->ops.poll = usb_stream_hwdep_poll; 434 435 sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm", 436 dev->bus->busnum, dev->devnum); 437 return 0; 438} 439 440static bool us122l_create_card(struct snd_card *card) 441{ 442 int err; 443 struct us122l *us122l = US122L(card); 444 445 if (us122l->is_us144) { 446 err = usb_set_interface(us122l->dev, 0, 1); 447 if (err) { 448 snd_printk(KERN_ERR "usb_set_interface error\n"); 449 return false; 450 } 451 } 452 err = usb_set_interface(us122l->dev, 1, 1); 453 if (err) { 454 snd_printk(KERN_ERR "usb_set_interface error\n"); 455 return false; 456 } 457 458 pt_info_set(us122l->dev, 0x11); 459 pt_info_set(us122l->dev, 0x10); 460 461 if (!us122l_start(us122l, 44100, 256)) 462 return false; 463 464 if (us122l->is_us144) 465 err = us144_create_usbmidi(card); 466 else 467 err = us122l_create_usbmidi(card); 468 if (err < 0) { 469 snd_printk(KERN_ERR "us122l_create_usbmidi error %i\n", err); 470 goto stop; 471 } 472 err = usb_stream_hwdep_new(card); 473 if (err < 0) { 474 /* release the midi resources */ 475 struct list_head *p; 476 477 list_for_each(p, &us122l->midi_list) 478 snd_usbmidi_disconnect(p); 479 480 goto stop; 481 } 482 return true; 483 484stop: 485 us122l_stop(us122l); 486 return false; 487} 488 489static void snd_us122l_free(struct snd_card *card) 490{ 491 struct us122l *us122l = US122L(card); 492 int index = us122l->card_index; 493 494 if (index >= 0 && index < SNDRV_CARDS) 495 snd_us122l_card_used[index] = 0; 496} 497 498static int usx2y_create_card(struct usb_device *device, 499 struct usb_interface *intf, 500 struct snd_card **cardp, 501 unsigned long flags) 502{ 503 int dev; 504 struct snd_card *card; 505 int err; 506 507 for (dev = 0; dev < SNDRV_CARDS; ++dev) 508 if (enable[dev] && !snd_us122l_card_used[dev]) 509 break; 510 if (dev >= SNDRV_CARDS) 511 return -ENODEV; 512 err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE, 513 sizeof(struct us122l), &card); 514 if (err < 0) 515 return err; 516 snd_us122l_card_used[US122L(card)->card_index = dev] = 1; 517 card->private_free = snd_us122l_free; 518 US122L(card)->dev = device; 519 mutex_init(&US122L(card)->mutex); 520 init_waitqueue_head(&US122L(card)->sk.sleep); 521 US122L(card)->is_us144 = flags & US122L_FLAG_US144; 522 INIT_LIST_HEAD(&US122L(card)->midi_list); 523 strcpy(card->driver, "USB "NAME_ALLCAPS""); 524 sprintf(card->shortname, "TASCAM "NAME_ALLCAPS""); 525 sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)", 526 card->shortname, 527 le16_to_cpu(device->descriptor.idVendor), 528 le16_to_cpu(device->descriptor.idProduct), 529 0, 530 US122L(card)->dev->bus->busnum, 531 US122L(card)->dev->devnum 532 ); 533 *cardp = card; 534 return 0; 535} 536 537static int us122l_usb_probe(struct usb_interface *intf, 538 const struct usb_device_id *device_id, 539 struct snd_card **cardp) 540{ 541 struct usb_device *device = interface_to_usbdev(intf); 542 struct snd_card *card; 543 int err; 544 545 err = usx2y_create_card(device, intf, &card, device_id->driver_info); 546 if (err < 0) 547 return err; 548 549 if (!us122l_create_card(card)) { 550 snd_card_free(card); 551 return -EINVAL; 552 } 553 554 err = snd_card_register(card); 555 if (err < 0) { 556 snd_card_free(card); 557 return err; 558 } 559 560 usb_get_intf(usb_ifnum_to_if(device, 0)); 561 usb_get_dev(device); 562 *cardp = card; 563 return 0; 564} 565 566static int snd_us122l_probe(struct usb_interface *intf, 567 const struct usb_device_id *id) 568{ 569 struct usb_device *device = interface_to_usbdev(intf); 570 struct snd_card *card; 571 int err; 572 573 if (id->driver_info & US122L_FLAG_US144 && 574 device->speed == USB_SPEED_HIGH) { 575 snd_printk(KERN_ERR "disable ehci-hcd to run US-144\n"); 576 return -ENODEV; 577 } 578 579 snd_printdd(KERN_DEBUG"%p:%i\n", 580 intf, intf->cur_altsetting->desc.bInterfaceNumber); 581 if (intf->cur_altsetting->desc.bInterfaceNumber != 1) 582 return 0; 583 584 err = us122l_usb_probe(usb_get_intf(intf), id, &card); 585 if (err < 0) { 586 usb_put_intf(intf); 587 return err; 588 } 589 590 usb_set_intfdata(intf, card); 591 return 0; 592} 593 594static void snd_us122l_disconnect(struct usb_interface *intf) 595{ 596 struct snd_card *card; 597 struct us122l *us122l; 598 struct list_head *p; 599 600 card = usb_get_intfdata(intf); 601 if (!card) 602 return; 603 604 snd_card_disconnect(card); 605 606 us122l = US122L(card); 607 mutex_lock(&us122l->mutex); 608 us122l_stop(us122l); 609 mutex_unlock(&us122l->mutex); 610 611 /* release the midi resources */ 612 list_for_each(p, &us122l->midi_list) { 613 snd_usbmidi_disconnect(p); 614 } 615 616 usb_put_intf(usb_ifnum_to_if(us122l->dev, 0)); 617 usb_put_intf(usb_ifnum_to_if(us122l->dev, 1)); 618 usb_put_dev(us122l->dev); 619 620 while (atomic_read(&us122l->mmap_count)) 621 msleep(500); 622 623 snd_card_free(card); 624} 625 626static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message) 627{ 628 struct snd_card *card; 629 struct us122l *us122l; 630 struct list_head *p; 631 632 card = usb_get_intfdata(intf); 633 if (!card) 634 return 0; 635 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 636 637 us122l = US122L(card); 638 if (!us122l) 639 return 0; 640 641 list_for_each(p, &us122l->midi_list) 642 snd_usbmidi_input_stop(p); 643 644 mutex_lock(&us122l->mutex); 645 usb_stream_stop(&us122l->sk); 646 mutex_unlock(&us122l->mutex); 647 648 return 0; 649} 650 651static int snd_us122l_resume(struct usb_interface *intf) 652{ 653 struct snd_card *card; 654 struct us122l *us122l; 655 struct list_head *p; 656 int err; 657 658 card = usb_get_intfdata(intf); 659 if (!card) 660 return 0; 661 662 us122l = US122L(card); 663 if (!us122l) 664 return 0; 665 666 mutex_lock(&us122l->mutex); 667 /* needed, doesn't restart without: */ 668 if (us122l->is_us144) { 669 err = usb_set_interface(us122l->dev, 0, 1); 670 if (err) { 671 snd_printk(KERN_ERR "usb_set_interface error\n"); 672 goto unlock; 673 } 674 } 675 err = usb_set_interface(us122l->dev, 1, 1); 676 if (err) { 677 snd_printk(KERN_ERR "usb_set_interface error\n"); 678 goto unlock; 679 } 680 681 pt_info_set(us122l->dev, 0x11); 682 pt_info_set(us122l->dev, 0x10); 683 684 err = us122l_set_sample_rate(us122l->dev, 685 us122l->sk.s->cfg.sample_rate); 686 if (err < 0) { 687 snd_printk(KERN_ERR "us122l_set_sample_rate error\n"); 688 goto unlock; 689 } 690 err = usb_stream_start(&us122l->sk); 691 if (err) 692 goto unlock; 693 694 list_for_each(p, &us122l->midi_list) 695 snd_usbmidi_input_start(p); 696unlock: 697 mutex_unlock(&us122l->mutex); 698 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 699 return err; 700} 701 702static const struct usb_device_id snd_us122l_usb_id_table[] = { 703 { 704 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 705 .idVendor = 0x0644, 706 .idProduct = USB_ID_US122L 707 }, 708 { /* US-144 only works at USB1.1! Disable module ehci-hcd. */ 709 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 710 .idVendor = 0x0644, 711 .idProduct = USB_ID_US144, 712 .driver_info = US122L_FLAG_US144 713 }, 714 { 715 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 716 .idVendor = 0x0644, 717 .idProduct = USB_ID_US122MKII 718 }, 719 { 720 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 721 .idVendor = 0x0644, 722 .idProduct = USB_ID_US144MKII, 723 .driver_info = US122L_FLAG_US144 724 }, 725 { /* terminator */ } 726}; 727MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table); 728 729static struct usb_driver snd_us122l_usb_driver = { 730 .name = "snd-usb-us122l", 731 .probe = snd_us122l_probe, 732 .disconnect = snd_us122l_disconnect, 733 .suspend = snd_us122l_suspend, 734 .resume = snd_us122l_resume, 735 .reset_resume = snd_us122l_resume, 736 .id_table = snd_us122l_usb_id_table, 737 .supports_autosuspend = 1 738}; 739 740module_usb_driver(snd_us122l_usb_driver); 741