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 <linux/slab.h> 20 #include <linux/usb.h> 21 #include <linux/usb/audio.h> 22 #include <linux/module.h> 23 #include <sound/core.h> 24 #include <sound/hwdep.h> 25 #include <sound/pcm.h> 26 #include <sound/initval.h> 27 #define MODNAME "US122L" 28 #include "usb_stream.c" 29 #include "../usbaudio.h" 30 #include "../midi.h" 31 #include "us122l.h" 32 33 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>"); 34 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5"); 35 MODULE_LICENSE("GPL"); 36 37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ 38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ 39 /* Enable this card */ 40 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 41 42 module_param_array(index, int, NULL, 0444); 43 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS"."); 44 module_param_array(id, charp, NULL, 0444); 45 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS"."); 46 module_param_array(enable, bool, NULL, 0444); 47 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS"."); 48 49 /* driver_info flags */ 50 #define US122L_FLAG_US144 BIT(0) 51 52 static int snd_us122l_card_used[SNDRV_CARDS]; 53 54 static int us122l_create_usbmidi(struct snd_card *card) 55 { 56 static struct snd_usb_midi_endpoint_info quirk_data = { 57 .out_ep = 4, 58 .in_ep = 3, 59 .out_cables = 0x001, 60 .in_cables = 0x001 61 }; 62 static struct snd_usb_audio_quirk quirk = { 63 .vendor_name = "US122L", 64 .product_name = NAME_ALLCAPS, 65 .ifnum = 1, 66 .type = QUIRK_MIDI_US122L, 67 .data = &quirk_data 68 }; 69 struct usb_device *dev = US122L(card)->dev; 70 struct usb_interface *iface = usb_ifnum_to_if(dev, 1); 71 72 return snd_usbmidi_create(card, iface, 73 &US122L(card)->midi_list, &quirk); 74 } 75 76 static int us144_create_usbmidi(struct snd_card *card) 77 { 78 static struct snd_usb_midi_endpoint_info quirk_data = { 79 .out_ep = 4, 80 .in_ep = 3, 81 .out_cables = 0x001, 82 .in_cables = 0x001 83 }; 84 static struct snd_usb_audio_quirk quirk = { 85 .vendor_name = "US144", 86 .product_name = NAME_ALLCAPS, 87 .ifnum = 0, 88 .type = QUIRK_MIDI_US122L, 89 .data = &quirk_data 90 }; 91 struct usb_device *dev = US122L(card)->dev; 92 struct usb_interface *iface = usb_ifnum_to_if(dev, 0); 93 94 return snd_usbmidi_create(card, iface, 95 &US122L(card)->midi_list, &quirk); 96 } 97 98 /* 99 * Wrapper for usb_control_msg(). 100 * Allocates a temp buffer to prevent dmaing from/to the stack. 101 */ 102 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe, 103 __u8 request, __u8 requesttype, 104 __u16 value, __u16 index, void *data, 105 __u16 size, int timeout) 106 { 107 int err; 108 void *buf = NULL; 109 110 if (size > 0) { 111 buf = kmemdup(data, size, GFP_KERNEL); 112 if (!buf) 113 return -ENOMEM; 114 } 115 err = usb_control_msg(dev, pipe, request, requesttype, 116 value, index, buf, size, timeout); 117 if (size > 0) { 118 memcpy(data, buf, size); 119 kfree(buf); 120 } 121 return err; 122 } 123 124 static void pt_info_set(struct usb_device *dev, u8 v) 125 { 126 int ret; 127 128 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 129 'I', 130 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 131 v, 0, NULL, 0, 1000); 132 snd_printdd(KERN_DEBUG "%i\n", ret); 133 } 134 135 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area) 136 { 137 struct us122l *us122l = area->vm_private_data; 138 atomic_inc(&us122l->mmap_count); 139 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); 140 } 141 142 static int usb_stream_hwdep_vm_fault(struct vm_fault *vmf) 143 { 144 unsigned long offset; 145 struct page *page; 146 void *vaddr; 147 struct us122l *us122l = vmf->vma->vm_private_data; 148 struct usb_stream *s; 149 150 mutex_lock(&us122l->mutex); 151 s = us122l->sk.s; 152 if (!s) 153 goto unlock; 154 155 offset = vmf->pgoff << PAGE_SHIFT; 156 if (offset < PAGE_ALIGN(s->read_size)) 157 vaddr = (char *)s + offset; 158 else { 159 offset -= PAGE_ALIGN(s->read_size); 160 if (offset >= PAGE_ALIGN(s->write_size)) 161 goto unlock; 162 163 vaddr = us122l->sk.write_page + offset; 164 } 165 page = virt_to_page(vaddr); 166 167 get_page(page); 168 mutex_unlock(&us122l->mutex); 169 170 vmf->page = page; 171 172 return 0; 173 unlock: 174 mutex_unlock(&us122l->mutex); 175 return VM_FAULT_SIGBUS; 176 } 177 178 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area) 179 { 180 struct us122l *us122l = area->vm_private_data; 181 atomic_dec(&us122l->mmap_count); 182 snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); 183 } 184 185 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = { 186 .open = usb_stream_hwdep_vm_open, 187 .fault = usb_stream_hwdep_vm_fault, 188 .close = usb_stream_hwdep_vm_close, 189 }; 190 191 192 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file) 193 { 194 struct us122l *us122l = hw->private_data; 195 struct usb_interface *iface; 196 snd_printdd(KERN_DEBUG "%p %p\n", hw, file); 197 if (hw->used >= 2) 198 return -EBUSY; 199 200 if (!us122l->first) 201 us122l->first = file; 202 203 if (us122l->is_us144) { 204 iface = usb_ifnum_to_if(us122l->dev, 0); 205 usb_autopm_get_interface(iface); 206 } 207 iface = usb_ifnum_to_if(us122l->dev, 1); 208 usb_autopm_get_interface(iface); 209 return 0; 210 } 211 212 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file) 213 { 214 struct us122l *us122l = hw->private_data; 215 struct usb_interface *iface; 216 snd_printdd(KERN_DEBUG "%p %p\n", hw, file); 217 218 if (us122l->is_us144) { 219 iface = usb_ifnum_to_if(us122l->dev, 0); 220 usb_autopm_put_interface(iface); 221 } 222 iface = usb_ifnum_to_if(us122l->dev, 1); 223 usb_autopm_put_interface(iface); 224 if (us122l->first == file) 225 us122l->first = NULL; 226 mutex_lock(&us122l->mutex); 227 if (us122l->master == file) 228 us122l->master = us122l->slave; 229 230 us122l->slave = NULL; 231 mutex_unlock(&us122l->mutex); 232 return 0; 233 } 234 235 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw, 236 struct file *filp, struct vm_area_struct *area) 237 { 238 unsigned long size = area->vm_end - area->vm_start; 239 struct us122l *us122l = hw->private_data; 240 unsigned long offset; 241 struct usb_stream *s; 242 int err = 0; 243 bool read; 244 245 offset = area->vm_pgoff << PAGE_SHIFT; 246 mutex_lock(&us122l->mutex); 247 s = us122l->sk.s; 248 read = offset < s->read_size; 249 if (read && area->vm_flags & VM_WRITE) { 250 err = -EPERM; 251 goto out; 252 } 253 snd_printdd(KERN_DEBUG "%lu %u\n", size, 254 read ? s->read_size : s->write_size); 255 /* if userspace tries to mmap beyond end of our buffer, fail */ 256 if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) { 257 snd_printk(KERN_WARNING "%lu > %u\n", size, 258 read ? s->read_size : s->write_size); 259 err = -EINVAL; 260 goto out; 261 } 262 263 area->vm_ops = &usb_stream_hwdep_vm_ops; 264 area->vm_flags |= VM_DONTDUMP; 265 if (!read) 266 area->vm_flags |= VM_DONTEXPAND; 267 area->vm_private_data = us122l; 268 atomic_inc(&us122l->mmap_count); 269 out: 270 mutex_unlock(&us122l->mutex); 271 return err; 272 } 273 274 static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw, 275 struct file *file, poll_table *wait) 276 { 277 struct us122l *us122l = hw->private_data; 278 unsigned *polled; 279 __poll_t mask; 280 281 poll_wait(file, &us122l->sk.sleep, wait); 282 283 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR; 284 if (mutex_trylock(&us122l->mutex)) { 285 struct usb_stream *s = us122l->sk.s; 286 if (s && s->state == usb_stream_ready) { 287 if (us122l->first == file) 288 polled = &s->periods_polled; 289 else 290 polled = &us122l->second_periods_polled; 291 if (*polled != s->periods_done) { 292 *polled = s->periods_done; 293 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM; 294 } else 295 mask = 0; 296 } 297 mutex_unlock(&us122l->mutex); 298 } 299 return mask; 300 } 301 302 static void us122l_stop(struct us122l *us122l) 303 { 304 struct list_head *p; 305 list_for_each(p, &us122l->midi_list) 306 snd_usbmidi_input_stop(p); 307 308 usb_stream_stop(&us122l->sk); 309 usb_stream_free(&us122l->sk); 310 } 311 312 static int us122l_set_sample_rate(struct usb_device *dev, int rate) 313 { 314 unsigned int ep = 0x81; 315 unsigned char data[3]; 316 int err; 317 318 data[0] = rate; 319 data[1] = rate >> 8; 320 data[2] = rate >> 16; 321 err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, 322 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, 323 UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000); 324 if (err < 0) 325 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n", 326 dev->devnum, rate, ep); 327 return err; 328 } 329 330 static bool us122l_start(struct us122l *us122l, 331 unsigned rate, unsigned period_frames) 332 { 333 struct list_head *p; 334 int err; 335 unsigned use_packsize = 0; 336 bool success = false; 337 338 if (us122l->dev->speed == USB_SPEED_HIGH) { 339 /* The us-122l's descriptor defaults to iso max_packsize 78, 340 which isn't needed for samplerates <= 48000. 341 Lets save some memory: 342 */ 343 switch (rate) { 344 case 44100: 345 use_packsize = 36; 346 break; 347 case 48000: 348 use_packsize = 42; 349 break; 350 case 88200: 351 use_packsize = 72; 352 break; 353 } 354 } 355 if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2, 356 rate, use_packsize, period_frames, 6)) 357 goto out; 358 359 err = us122l_set_sample_rate(us122l->dev, rate); 360 if (err < 0) { 361 us122l_stop(us122l); 362 snd_printk(KERN_ERR "us122l_set_sample_rate error \n"); 363 goto out; 364 } 365 err = usb_stream_start(&us122l->sk); 366 if (err < 0) { 367 us122l_stop(us122l); 368 snd_printk(KERN_ERR "us122l_start error %i \n", err); 369 goto out; 370 } 371 list_for_each(p, &us122l->midi_list) 372 snd_usbmidi_input_start(p); 373 success = true; 374 out: 375 return success; 376 } 377 378 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, 379 unsigned cmd, unsigned long arg) 380 { 381 struct usb_stream_config cfg; 382 struct us122l *us122l = hw->private_data; 383 struct usb_stream *s; 384 unsigned min_period_frames; 385 int err = 0; 386 bool high_speed; 387 388 if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS) 389 return -ENOTTY; 390 391 if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg))) 392 return -EFAULT; 393 394 if (cfg.version != USB_STREAM_INTERFACE_VERSION) 395 return -ENXIO; 396 397 high_speed = us122l->dev->speed == USB_SPEED_HIGH; 398 if ((cfg.sample_rate != 44100 && cfg.sample_rate != 48000 && 399 (!high_speed || 400 (cfg.sample_rate != 88200 && cfg.sample_rate != 96000))) || 401 cfg.frame_size != 6 || 402 cfg.period_frames > 0x3000) 403 return -EINVAL; 404 405 switch (cfg.sample_rate) { 406 case 44100: 407 min_period_frames = 48; 408 break; 409 case 48000: 410 min_period_frames = 52; 411 break; 412 default: 413 min_period_frames = 104; 414 break; 415 } 416 if (!high_speed) 417 min_period_frames <<= 1; 418 if (cfg.period_frames < min_period_frames) 419 return -EINVAL; 420 421 snd_power_wait(hw->card, SNDRV_CTL_POWER_D0); 422 423 mutex_lock(&us122l->mutex); 424 s = us122l->sk.s; 425 if (!us122l->master) 426 us122l->master = file; 427 else if (us122l->master != file) { 428 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) { 429 err = -EIO; 430 goto unlock; 431 } 432 us122l->slave = file; 433 } 434 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) || 435 s->state == usb_stream_xrun) { 436 us122l_stop(us122l); 437 if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames)) 438 err = -EIO; 439 else 440 err = 1; 441 } 442 unlock: 443 mutex_unlock(&us122l->mutex); 444 wake_up_all(&us122l->sk.sleep); 445 return err; 446 } 447 448 #define SND_USB_STREAM_ID "USB STREAM" 449 static int usb_stream_hwdep_new(struct snd_card *card) 450 { 451 int err; 452 struct snd_hwdep *hw; 453 struct usb_device *dev = US122L(card)->dev; 454 455 err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw); 456 if (err < 0) 457 return err; 458 459 hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM; 460 hw->private_data = US122L(card); 461 hw->ops.open = usb_stream_hwdep_open; 462 hw->ops.release = usb_stream_hwdep_release; 463 hw->ops.ioctl = usb_stream_hwdep_ioctl; 464 hw->ops.ioctl_compat = usb_stream_hwdep_ioctl; 465 hw->ops.mmap = usb_stream_hwdep_mmap; 466 hw->ops.poll = usb_stream_hwdep_poll; 467 468 sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm", 469 dev->bus->busnum, dev->devnum); 470 return 0; 471 } 472 473 474 static bool us122l_create_card(struct snd_card *card) 475 { 476 int err; 477 struct us122l *us122l = US122L(card); 478 479 if (us122l->is_us144) { 480 err = usb_set_interface(us122l->dev, 0, 1); 481 if (err) { 482 snd_printk(KERN_ERR "usb_set_interface error \n"); 483 return false; 484 } 485 } 486 err = usb_set_interface(us122l->dev, 1, 1); 487 if (err) { 488 snd_printk(KERN_ERR "usb_set_interface error \n"); 489 return false; 490 } 491 492 pt_info_set(us122l->dev, 0x11); 493 pt_info_set(us122l->dev, 0x10); 494 495 if (!us122l_start(us122l, 44100, 256)) 496 return false; 497 498 if (us122l->is_us144) 499 err = us144_create_usbmidi(card); 500 else 501 err = us122l_create_usbmidi(card); 502 if (err < 0) { 503 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err); 504 goto stop; 505 } 506 err = usb_stream_hwdep_new(card); 507 if (err < 0) { 508 /* release the midi resources */ 509 struct list_head *p; 510 list_for_each(p, &us122l->midi_list) 511 snd_usbmidi_disconnect(p); 512 513 goto stop; 514 } 515 return true; 516 517 stop: 518 us122l_stop(us122l); 519 return false; 520 } 521 522 static void snd_us122l_free(struct snd_card *card) 523 { 524 struct us122l *us122l = US122L(card); 525 int index = us122l->card_index; 526 if (index >= 0 && index < SNDRV_CARDS) 527 snd_us122l_card_used[index] = 0; 528 } 529 530 static int usx2y_create_card(struct usb_device *device, 531 struct usb_interface *intf, 532 struct snd_card **cardp, 533 unsigned long flags) 534 { 535 int dev; 536 struct snd_card *card; 537 int err; 538 539 for (dev = 0; dev < SNDRV_CARDS; ++dev) 540 if (enable[dev] && !snd_us122l_card_used[dev]) 541 break; 542 if (dev >= SNDRV_CARDS) 543 return -ENODEV; 544 err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE, 545 sizeof(struct us122l), &card); 546 if (err < 0) 547 return err; 548 snd_us122l_card_used[US122L(card)->card_index = dev] = 1; 549 card->private_free = snd_us122l_free; 550 US122L(card)->dev = device; 551 mutex_init(&US122L(card)->mutex); 552 init_waitqueue_head(&US122L(card)->sk.sleep); 553 US122L(card)->is_us144 = flags & US122L_FLAG_US144; 554 INIT_LIST_HEAD(&US122L(card)->midi_list); 555 strcpy(card->driver, "USB "NAME_ALLCAPS""); 556 sprintf(card->shortname, "TASCAM "NAME_ALLCAPS""); 557 sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)", 558 card->shortname, 559 le16_to_cpu(device->descriptor.idVendor), 560 le16_to_cpu(device->descriptor.idProduct), 561 0, 562 US122L(card)->dev->bus->busnum, 563 US122L(card)->dev->devnum 564 ); 565 *cardp = card; 566 return 0; 567 } 568 569 static int us122l_usb_probe(struct usb_interface *intf, 570 const struct usb_device_id *device_id, 571 struct snd_card **cardp) 572 { 573 struct usb_device *device = interface_to_usbdev(intf); 574 struct snd_card *card; 575 int err; 576 577 err = usx2y_create_card(device, intf, &card, device_id->driver_info); 578 if (err < 0) 579 return err; 580 581 if (!us122l_create_card(card)) { 582 snd_card_free(card); 583 return -EINVAL; 584 } 585 586 err = snd_card_register(card); 587 if (err < 0) { 588 snd_card_free(card); 589 return err; 590 } 591 592 usb_get_intf(usb_ifnum_to_if(device, 0)); 593 usb_get_dev(device); 594 *cardp = card; 595 return 0; 596 } 597 598 static int snd_us122l_probe(struct usb_interface *intf, 599 const struct usb_device_id *id) 600 { 601 struct usb_device *device = interface_to_usbdev(intf); 602 struct snd_card *card; 603 int err; 604 605 if (id->driver_info & US122L_FLAG_US144 && 606 device->speed == USB_SPEED_HIGH) { 607 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n"); 608 return -ENODEV; 609 } 610 611 snd_printdd(KERN_DEBUG"%p:%i\n", 612 intf, intf->cur_altsetting->desc.bInterfaceNumber); 613 if (intf->cur_altsetting->desc.bInterfaceNumber != 1) 614 return 0; 615 616 err = us122l_usb_probe(usb_get_intf(intf), id, &card); 617 if (err < 0) { 618 usb_put_intf(intf); 619 return err; 620 } 621 622 usb_set_intfdata(intf, card); 623 return 0; 624 } 625 626 static void snd_us122l_disconnect(struct usb_interface *intf) 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; 635 636 snd_card_disconnect(card); 637 638 us122l = US122L(card); 639 mutex_lock(&us122l->mutex); 640 us122l_stop(us122l); 641 mutex_unlock(&us122l->mutex); 642 643 /* release the midi resources */ 644 list_for_each(p, &us122l->midi_list) { 645 snd_usbmidi_disconnect(p); 646 } 647 648 usb_put_intf(usb_ifnum_to_if(us122l->dev, 0)); 649 usb_put_intf(usb_ifnum_to_if(us122l->dev, 1)); 650 usb_put_dev(us122l->dev); 651 652 while (atomic_read(&us122l->mmap_count)) 653 msleep(500); 654 655 snd_card_free(card); 656 } 657 658 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message) 659 { 660 struct snd_card *card; 661 struct us122l *us122l; 662 struct list_head *p; 663 664 card = usb_get_intfdata(intf); 665 if (!card) 666 return 0; 667 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 668 669 us122l = US122L(card); 670 if (!us122l) 671 return 0; 672 673 list_for_each(p, &us122l->midi_list) 674 snd_usbmidi_input_stop(p); 675 676 mutex_lock(&us122l->mutex); 677 usb_stream_stop(&us122l->sk); 678 mutex_unlock(&us122l->mutex); 679 680 return 0; 681 } 682 683 static int snd_us122l_resume(struct usb_interface *intf) 684 { 685 struct snd_card *card; 686 struct us122l *us122l; 687 struct list_head *p; 688 int err; 689 690 card = usb_get_intfdata(intf); 691 if (!card) 692 return 0; 693 694 us122l = US122L(card); 695 if (!us122l) 696 return 0; 697 698 mutex_lock(&us122l->mutex); 699 /* needed, doesn't restart without: */ 700 if (us122l->is_us144) { 701 err = usb_set_interface(us122l->dev, 0, 1); 702 if (err) { 703 snd_printk(KERN_ERR "usb_set_interface error \n"); 704 goto unlock; 705 } 706 } 707 err = usb_set_interface(us122l->dev, 1, 1); 708 if (err) { 709 snd_printk(KERN_ERR "usb_set_interface error \n"); 710 goto unlock; 711 } 712 713 pt_info_set(us122l->dev, 0x11); 714 pt_info_set(us122l->dev, 0x10); 715 716 err = us122l_set_sample_rate(us122l->dev, 717 us122l->sk.s->cfg.sample_rate); 718 if (err < 0) { 719 snd_printk(KERN_ERR "us122l_set_sample_rate error \n"); 720 goto unlock; 721 } 722 err = usb_stream_start(&us122l->sk); 723 if (err) 724 goto unlock; 725 726 list_for_each(p, &us122l->midi_list) 727 snd_usbmidi_input_start(p); 728 unlock: 729 mutex_unlock(&us122l->mutex); 730 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 731 return err; 732 } 733 734 static const struct usb_device_id snd_us122l_usb_id_table[] = { 735 { 736 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 737 .idVendor = 0x0644, 738 .idProduct = USB_ID_US122L 739 }, 740 { /* US-144 only works at USB1.1! Disable module ehci-hcd. */ 741 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 742 .idVendor = 0x0644, 743 .idProduct = USB_ID_US144, 744 .driver_info = US122L_FLAG_US144 745 }, 746 { 747 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 748 .idVendor = 0x0644, 749 .idProduct = USB_ID_US122MKII 750 }, 751 { 752 .match_flags = USB_DEVICE_ID_MATCH_DEVICE, 753 .idVendor = 0x0644, 754 .idProduct = USB_ID_US144MKII, 755 .driver_info = US122L_FLAG_US144 756 }, 757 { /* terminator */ } 758 }; 759 760 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table); 761 static struct usb_driver snd_us122l_usb_driver = { 762 .name = "snd-usb-us122l", 763 .probe = snd_us122l_probe, 764 .disconnect = snd_us122l_disconnect, 765 .suspend = snd_us122l_suspend, 766 .resume = snd_us122l_resume, 767 .reset_resume = snd_us122l_resume, 768 .id_table = snd_us122l_usb_id_table, 769 .supports_autosuspend = 1 770 }; 771 772 module_usb_driver(snd_us122l_usb_driver); 773