sound/usb/usx2y/us122l.c

   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         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
  95 static 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
 103 static 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;
 134 unlock:
 135         mutex_unlock(&us122l->mutex);
 136         return VM_FAULT_SIGBUS;
 137 }
 138
 139 static 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
 147 static 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
 153 static 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
 174 static 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
 198 static 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);
 232 out:
 233         mutex_unlock(&us122l->mutex);
 234         return err;
 235 }
 236
 237 static __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
 267 static 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
 278 static 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
 297 static 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;
 341 out:
 342         return success;
 343 }
 344
 345 static 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         }
 409 unlock:
 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"
 416 static 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
 440 static 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
 484 stop:
 485         us122l_stop(us122l);
 486         return false;
 487 }
 488
 489 static 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
 498 static 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
 537 static 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
 566 static 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
 594 static 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
 626 static 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
 651 static 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);
 696 unlock:
 697         mutex_unlock(&us122l->mutex);
 698         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 699         return err;
 700 }
 701
 702 static 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 };
 727 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 728
 729 static 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
 740 module_usb_driver(snd_us122l_usb_driver);