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 20 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>"); 21 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5"); 22 MODULE_LICENSE("GPL"); 23 24 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ 25 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ 26 /* Enable this card */ 27 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 28 29 module_param_array(index, int, NULL, 0444); 30 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS"."); 31 module_param_array(id, charp, NULL, 0444); 32 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS"."); 33 module_param_array(enable, bool, NULL, 0444); 34 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS"."); 35 36 /* driver_info flags */ 37 #define US122L_FLAG_US144 BIT(0) 38 39 static int snd_us122l_card_used[SNDRV_CARDS]; 40 41 static 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 63 static 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 85 static void pt_info_set(struct usb_device *dev, u8 v) 86 { 87 usb_control_msg_send(dev, 0, 'I', 88 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 89 v, 0, NULL, 0, 1000, GFP_NOIO); 90 } 91 92 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area) 93 { 94 struct us122l *us122l = area->vm_private_data; 95 96 atomic_inc(&us122l->mmap_count); 97 } 98 99 static vm_fault_t usb_stream_hwdep_vm_fault(struct vm_fault *vmf) 100 { 101 unsigned long offset; 102 struct page *page; 103 void *vaddr; 104 struct us122l *us122l = vmf->vma->vm_private_data; 105 struct usb_stream *s; 106 107 mutex_lock(&us122l->mutex); 108 s = us122l->sk.s; 109 if (!s) 110 goto unlock; 111 112 offset = vmf->pgoff << PAGE_SHIFT; 113 if (offset < PAGE_ALIGN(s->read_size)) { 114 vaddr = (char *)s + offset; 115 } else { 116 offset -= PAGE_ALIGN(s->read_size); 117 if (offset >= PAGE_ALIGN(s->write_size)) 118 goto unlock; 119 120 vaddr = us122l->sk.write_page + offset; 121 } 122 page = virt_to_page(vaddr); 123 124 get_page(page); 125 mutex_unlock(&us122l->mutex); 126 127 vmf->page = page; 128 129 return 0; 130 unlock: 131 mutex_unlock(&us122l->mutex); 132 return VM_FAULT_SIGBUS; 133 } 134 135 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area) 136 { 137 struct us122l *us122l = area->vm_private_data; 138 139 atomic_dec(&us122l->mmap_count); 140 } 141 142 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = { 143 .open = usb_stream_hwdep_vm_open, 144 .fault = usb_stream_hwdep_vm_fault, 145 .close = usb_stream_hwdep_vm_close, 146 }; 147 148 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file) 149 { 150 struct us122l *us122l = hw->private_data; 151 struct usb_interface *iface; 152 153 if (hw->used >= 2) 154 return -EBUSY; 155 156 if (!us122l->first) 157 us122l->first = file; 158 159 if (us122l->is_us144) { 160 iface = usb_ifnum_to_if(us122l->dev, 0); 161 usb_autopm_get_interface(iface); 162 } 163 iface = usb_ifnum_to_if(us122l->dev, 1); 164 usb_autopm_get_interface(iface); 165 return 0; 166 } 167 168 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file) 169 { 170 struct us122l *us122l = hw->private_data; 171 struct usb_interface *iface; 172 173 if (us122l->is_us144) { 174 iface = usb_ifnum_to_if(us122l->dev, 0); 175 usb_autopm_put_interface(iface); 176 } 177 iface = usb_ifnum_to_if(us122l->dev, 1); 178 usb_autopm_put_interface(iface); 179 if (us122l->first == file) 180 us122l->first = NULL; 181 mutex_lock(&us122l->mutex); 182 if (us122l->master == file) 183 us122l->master = us122l->slave; 184 185 us122l->slave = NULL; 186 mutex_unlock(&us122l->mutex); 187 return 0; 188 } 189 190 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw, 191 struct file *filp, struct vm_area_struct *area) 192 { 193 unsigned long size = area->vm_end - area->vm_start; 194 struct us122l *us122l = hw->private_data; 195 unsigned long offset; 196 struct usb_stream *s; 197 int err = 0; 198 bool read; 199 200 offset = area->vm_pgoff << PAGE_SHIFT; 201 mutex_lock(&us122l->mutex); 202 s = us122l->sk.s; 203 read = offset < s->read_size; 204 if (read && area->vm_flags & VM_WRITE) { 205 err = -EPERM; 206 goto out; 207 } 208 /* if userspace tries to mmap beyond end of our buffer, fail */ 209 if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) { 210 dev_warn(hw->card->dev, "%s: size %lu > %u\n", __func__, 211 size, read ? s->read_size : s->write_size); 212 err = -EINVAL; 213 goto out; 214 } 215 216 area->vm_ops = &usb_stream_hwdep_vm_ops; 217 vm_flags_set(area, VM_DONTDUMP); 218 if (!read) 219 vm_flags_set(area, VM_DONTEXPAND); 220 area->vm_private_data = us122l; 221 atomic_inc(&us122l->mmap_count); 222 out: 223 mutex_unlock(&us122l->mutex); 224 return err; 225 } 226 227 static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw, 228 struct file *file, poll_table *wait) 229 { 230 struct us122l *us122l = hw->private_data; 231 unsigned int *polled; 232 __poll_t mask; 233 234 poll_wait(file, &us122l->sk.sleep, wait); 235 236 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR; 237 if (mutex_trylock(&us122l->mutex)) { 238 struct usb_stream *s = us122l->sk.s; 239 240 if (s && s->state == usb_stream_ready) { 241 if (us122l->first == file) 242 polled = &s->periods_polled; 243 else 244 polled = &us122l->second_periods_polled; 245 if (*polled != s->periods_done) { 246 *polled = s->periods_done; 247 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM; 248 } else { 249 mask = 0; 250 } 251 } 252 mutex_unlock(&us122l->mutex); 253 } 254 return mask; 255 } 256 257 static void us122l_stop(struct us122l *us122l) 258 { 259 struct list_head *p; 260 261 list_for_each(p, &us122l->midi_list) 262 snd_usbmidi_input_stop(p); 263 264 usb_stream_stop(&us122l->sk); 265 usb_stream_free(&us122l->sk); 266 } 267 268 static int us122l_set_sample_rate(struct usb_device *dev, int rate) 269 { 270 unsigned int ep = 0x81; 271 unsigned char data[3]; 272 int err; 273 274 data[0] = rate; 275 data[1] = rate >> 8; 276 data[2] = rate >> 16; 277 err = usb_control_msg_send(dev, 0, UAC_SET_CUR, 278 USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, 279 UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 280 1000, GFP_NOIO); 281 if (err) 282 dev_err(&dev->dev, "%d: cannot set freq %d to ep 0x%x\n", 283 dev->devnum, rate, ep); 284 return err; 285 } 286 287 static bool us122l_start(struct us122l *us122l, 288 unsigned int rate, unsigned int period_frames) 289 { 290 struct list_head *p; 291 int err; 292 unsigned int use_packsize = 0; 293 bool success = false; 294 295 if (us122l->dev->speed == USB_SPEED_HIGH) { 296 /* The us-122l's descriptor defaults to iso max_packsize 78, 297 which isn't needed for samplerates <= 48000. 298 Lets save some memory: 299 */ 300 switch (rate) { 301 case 44100: 302 use_packsize = 36; 303 break; 304 case 48000: 305 use_packsize = 42; 306 break; 307 case 88200: 308 use_packsize = 72; 309 break; 310 } 311 } 312 if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2, 313 rate, use_packsize, period_frames, 6)) 314 goto out; 315 316 err = us122l_set_sample_rate(us122l->dev, rate); 317 if (err < 0) { 318 us122l_stop(us122l); 319 dev_err(&us122l->dev->dev, "us122l_set_sample_rate error\n"); 320 goto out; 321 } 322 err = usb_stream_start(&us122l->sk); 323 if (err < 0) { 324 us122l_stop(us122l); 325 dev_err(&us122l->dev->dev, "%s error %i\n", __func__, err); 326 goto out; 327 } 328 list_for_each(p, &us122l->midi_list) 329 snd_usbmidi_input_start(p); 330 success = true; 331 out: 332 return success; 333 } 334 335 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, 336 unsigned int cmd, unsigned long arg) 337 { 338 struct usb_stream_config cfg; 339 struct us122l *us122l = hw->private_data; 340 struct usb_stream *s; 341 unsigned int min_period_frames; 342 int err = 0; 343 bool high_speed; 344 345 if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS) 346 return -ENOTTY; 347 348 if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg))) 349 return -EFAULT; 350 351 if (cfg.version != USB_STREAM_INTERFACE_VERSION) 352 return -ENXIO; 353 354 high_speed = us122l->dev->speed == USB_SPEED_HIGH; 355 if ((cfg.sample_rate != 44100 && cfg.sample_rate != 48000 && 356 (!high_speed || 357 (cfg.sample_rate != 88200 && cfg.sample_rate != 96000))) || 358 cfg.frame_size != 6 || 359 cfg.period_frames > 0x3000) 360 return -EINVAL; 361 362 switch (cfg.sample_rate) { 363 case 44100: 364 min_period_frames = 48; 365 break; 366 case 48000: 367 min_period_frames = 52; 368 break; 369 default: 370 min_period_frames = 104; 371 break; 372 } 373 if (!high_speed) 374 min_period_frames <<= 1; 375 if (cfg.period_frames < min_period_frames) 376 return -EINVAL; 377 378 snd_power_wait(hw->card); 379 380 mutex_lock(&us122l->mutex); 381 s = us122l->sk.s; 382 if (!us122l->master) { 383 us122l->master = file; 384 } else if (us122l->master != file) { 385 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) { 386 err = -EIO; 387 goto unlock; 388 } 389 us122l->slave = file; 390 } 391 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) || 392 s->state == usb_stream_xrun) { 393 us122l_stop(us122l); 394 if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames)) 395 err = -EIO; 396 else 397 err = 1; 398 } 399 unlock: 400 mutex_unlock(&us122l->mutex); 401 wake_up_all(&us122l->sk.sleep); 402 return err; 403 } 404 405 #define SND_USB_STREAM_ID "USB STREAM" 406 static int usb_stream_hwdep_new(struct snd_card *card) 407 { 408 int err; 409 struct snd_hwdep *hw; 410 struct usb_device *dev = US122L(card)->dev; 411 412 err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw); 413 if (err < 0) 414 return err; 415 416 hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM; 417 hw->private_data = US122L(card); 418 hw->ops.open = usb_stream_hwdep_open; 419 hw->ops.release = usb_stream_hwdep_release; 420 hw->ops.ioctl = usb_stream_hwdep_ioctl; 421 hw->ops.ioctl_compat = usb_stream_hwdep_ioctl; 422 hw->ops.mmap = usb_stream_hwdep_mmap; 423 hw->ops.poll = usb_stream_hwdep_poll; 424 425 sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm", 426 dev->bus->busnum, dev->devnum); 427 return 0; 428 } 429 430 static bool us122l_create_card(struct snd_card *card) 431 { 432 int err; 433 struct us122l *us122l = US122L(card); 434 435 if (us122l->is_us144) { 436 err = usb_set_interface(us122l->dev, 0, 1); 437 if (err) { 438 dev_err(card->dev, "usb_set_interface error\n"); 439 return false; 440 } 441 } 442 err = usb_set_interface(us122l->dev, 1, 1); 443 if (err) { 444 dev_err(card->dev, "usb_set_interface error\n"); 445 return false; 446 } 447 448 pt_info_set(us122l->dev, 0x11); 449 pt_info_set(us122l->dev, 0x10); 450 451 if (!us122l_start(us122l, 44100, 256)) 452 return false; 453 454 if (us122l->is_us144) 455 err = us144_create_usbmidi(card); 456 else 457 err = us122l_create_usbmidi(card); 458 if (err < 0) { 459 dev_err(card->dev, "us122l_create_usbmidi error %i\n", err); 460 goto stop; 461 } 462 err = usb_stream_hwdep_new(card); 463 if (err < 0) { 464 /* release the midi resources */ 465 struct list_head *p; 466 467 list_for_each(p, &us122l->midi_list) 468 snd_usbmidi_disconnect(p); 469 470 goto stop; 471 } 472 return true; 473 474 stop: 475 us122l_stop(us122l); 476 return false; 477 } 478 479 static void snd_us122l_free(struct snd_card *card) 480 { 481 struct us122l *us122l = US122L(card); 482 int index = us122l->card_index; 483 484 if (index >= 0 && index < SNDRV_CARDS) 485 snd_us122l_card_used[index] = 0; 486 } 487 488 static int usx2y_create_card(struct usb_device *device, 489 struct usb_interface *intf, 490 struct snd_card **cardp, 491 unsigned long flags) 492 { 493 int dev; 494 struct snd_card *card; 495 int err; 496 497 for (dev = 0; dev < SNDRV_CARDS; ++dev) 498 if (enable[dev] && !snd_us122l_card_used[dev]) 499 break; 500 if (dev >= SNDRV_CARDS) 501 return -ENODEV; 502 err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE, 503 sizeof(struct us122l), &card); 504 if (err < 0) 505 return err; 506 snd_us122l_card_used[US122L(card)->card_index = dev] = 1; 507 card->private_free = snd_us122l_free; 508 US122L(card)->dev = device; 509 mutex_init(&US122L(card)->mutex); 510 US122L(card)->sk.dev = device; 511 init_waitqueue_head(&US122L(card)->sk.sleep); 512 US122L(card)->is_us144 = flags & US122L_FLAG_US144; 513 INIT_LIST_HEAD(&US122L(card)->midi_list); 514 strcpy(card->driver, "USB "NAME_ALLCAPS""); 515 sprintf(card->shortname, "TASCAM "NAME_ALLCAPS""); 516 sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)", 517 card->shortname, 518 le16_to_cpu(device->descriptor.idVendor), 519 le16_to_cpu(device->descriptor.idProduct), 520 0, 521 US122L(card)->dev->bus->busnum, 522 US122L(card)->dev->devnum 523 ); 524 *cardp = card; 525 return 0; 526 } 527 528 static int us122l_usb_probe(struct usb_interface *intf, 529 const struct usb_device_id *device_id, 530 struct snd_card **cardp) 531 { 532 struct usb_device *device = interface_to_usbdev(intf); 533 struct snd_card *card; 534 int err; 535 536 err = usx2y_create_card(device, intf, &card, device_id->driver_info); 537 if (err < 0) 538 return err; 539 540 if (!us122l_create_card(card)) { 541 snd_card_free(card); 542 return -EINVAL; 543 } 544 545 err = snd_card_register(card); 546 if (err < 0) { 547 snd_card_free(card); 548 return err; 549 } 550 551 usb_get_intf(usb_ifnum_to_if(device, 0)); 552 usb_get_dev(device); 553 *cardp = card; 554 return 0; 555 } 556 557 static int snd_us122l_probe(struct usb_interface *intf, 558 const struct usb_device_id *id) 559 { 560 struct usb_device *device = interface_to_usbdev(intf); 561 struct snd_card *card; 562 int err; 563 564 if (id->driver_info & US122L_FLAG_US144 && 565 device->speed == USB_SPEED_HIGH) { 566 dev_err(&device->dev, "disable ehci-hcd to run US-144\n"); 567 return -ENODEV; 568 } 569 570 if (intf->cur_altsetting->desc.bInterfaceNumber != 1) 571 return 0; 572 573 err = us122l_usb_probe(usb_get_intf(intf), id, &card); 574 if (err < 0) { 575 usb_put_intf(intf); 576 return err; 577 } 578 579 usb_set_intfdata(intf, card); 580 return 0; 581 } 582 583 static void snd_us122l_disconnect(struct usb_interface *intf) 584 { 585 struct snd_card *card; 586 struct us122l *us122l; 587 struct list_head *p; 588 589 card = usb_get_intfdata(intf); 590 if (!card) 591 return; 592 593 snd_card_disconnect(card); 594 595 us122l = US122L(card); 596 mutex_lock(&us122l->mutex); 597 us122l_stop(us122l); 598 mutex_unlock(&us122l->mutex); 599 600 /* release the midi resources */ 601 list_for_each(p, &us122l->midi_list) { 602 snd_usbmidi_disconnect(p); 603 } 604 605 usb_put_intf(usb_ifnum_to_if(us122l->dev, 0)); 606 usb_put_intf(usb_ifnum_to_if(us122l->dev, 1)); 607 usb_put_dev(us122l->dev); 608 609 while (atomic_read(&us122l->mmap_count)) 610 msleep(500); 611 612 snd_card_free(card); 613 } 614 615 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message) 616 { 617 struct snd_card *card; 618 struct us122l *us122l; 619 struct list_head *p; 620 621 card = usb_get_intfdata(intf); 622 if (!card) 623 return 0; 624 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 625 626 us122l = US122L(card); 627 if (!us122l) 628 return 0; 629 630 list_for_each(p, &us122l->midi_list) 631 snd_usbmidi_input_stop(p); 632 633 mutex_lock(&us122l->mutex); 634 usb_stream_stop(&us122l->sk); 635 mutex_unlock(&us122l->mutex); 636 637 return 0; 638 } 639 640 static int snd_us122l_resume(struct usb_interface *intf) 641 { 642 struct snd_card *card; 643 struct us122l *us122l; 644 struct list_head *p; 645 int err; 646 647 card = usb_get_intfdata(intf); 648 if (!card) 649 return 0; 650 651 us122l = US122L(card); 652 if (!us122l) 653 return 0; 654 655 mutex_lock(&us122l->mutex); 656 /* needed, doesn't restart without: */ 657 if (us122l->is_us144) { 658 err = usb_set_interface(us122l->dev, 0, 1); 659 if (err) { 660 dev_err(&us122l->dev->dev, "usb_set_interface error\n"); 661 goto unlock; 662 } 663 } 664 err = usb_set_interface(us122l->dev, 1, 1); 665 if (err) { 666 dev_err(&us122l->dev->dev, "usb_set_interface error\n"); 667 goto unlock; 668 } 669 670 pt_info_set(us122l->dev, 0x11); 671 pt_info_set(us122l->dev, 0x10); 672 673 err = us122l_set_sample_rate(us122l->dev, 674 us122l->sk.s->cfg.sample_rate); 675 if (err < 0) { 676 dev_err(&us122l->dev->dev, "us122l_set_sample_rate error\n"); 677 goto unlock; 678 } 679 err = usb_stream_start(&us122l->sk); 680 if (err) 681 goto unlock; 682 683 list_for_each(p, &us122l->midi_list) 684 snd_usbmidi_input_start(p); 685 unlock: 686 mutex_unlock(&us122l->mutex); 687 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 688 return err; 689 } 690 691 static const struct usb_device_id snd_us122l_usb_id_table[] = { 692 { 693 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 694 .idVendor = 0x0644, 695 .idProduct = USB_ID_US122L 696 }, 697 { /* US-144 only works at USB1.1! Disable module ehci-hcd. */ 698 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 699 .idVendor = 0x0644, 700 .idProduct = USB_ID_US144, 701 .driver_info = US122L_FLAG_US144 702 }, 703 { 704 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 705 .idVendor = 0x0644, 706 .idProduct = USB_ID_US122MKII 707 }, 708 { 709 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 710 .idVendor = 0x0644, 711 .idProduct = USB_ID_US144MKII, 712 .driver_info = US122L_FLAG_US144 713 }, 714 { /* terminator */ } 715 }; 716 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table); 717 718 static struct usb_driver snd_us122l_usb_driver = { 719 .name = "snd-usb-us122l", 720 .probe = snd_us122l_probe, 721 .disconnect = snd_us122l_disconnect, 722 .suspend = snd_us122l_suspend, 723 .resume = snd_us122l_resume, 724 .reset_resume = snd_us122l_resume, 725 .id_table = snd_us122l_usb_id_table, 726 .supports_autosuspend = 1 727 }; 728 729 module_usb_driver(snd_us122l_usb_driver); 730