sound/usb/usx2y/us122l.c

   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 unsigned int 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         unsigned int    mask;
 280
 281         poll_wait(file, &us122l->sk.sleep, wait);
 282
 283         mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
 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 = POLLIN | POLLOUT | POLLWRNORM;
 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         cfg = memdup_user((void *)arg, sizeof(*cfg));
 392         if (IS_ERR(cfg))
 393                 return PTR_ERR(cfg);
 394
 395         if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
 396                 err = -ENXIO;
 397                 goto free;
 398         }
 399         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
 400         if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
 401              (!high_speed ||
 402               (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
 403             cfg->frame_size != 6 ||
 404             cfg->period_frames > 0x3000) {
 405                 err = -EINVAL;
 406                 goto free;
 407         }
 408         switch (cfg->sample_rate) {
 409         case 44100:
 410                 min_period_frames = 48;
 411                 break;
 412         case 48000:
 413                 min_period_frames = 52;
 414                 break;
 415         default:
 416                 min_period_frames = 104;
 417                 break;
 418         }
 419         if (!high_speed)
 420                 min_period_frames <<= 1;
 421         if (cfg->period_frames < min_period_frames) {
 422                 err = -EINVAL;
 423                 goto free;
 424         }
 425
 426         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
 427
 428         mutex_lock(&us122l->mutex);
 429         s = us122l->sk.s;
 430         if (!us122l->master)
 431                 us122l->master = file;
 432         else if (us122l->master != file) {
 433                 if (!s || memcmp(cfg, &s->cfg, sizeof(*cfg))) {
 434                         err = -EIO;
 435                         goto unlock;
 436                 }
 437                 us122l->slave = file;
 438         }
 439         if (!s || memcmp(cfg, &s->cfg, sizeof(*cfg)) ||
 440             s->state == usb_stream_xrun) {
 441                 us122l_stop(us122l);
 442                 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
 443                         err = -EIO;
 444                 else
 445                         err = 1;
 446         }
 447 unlock:
 448         mutex_unlock(&us122l->mutex);
 449 free:
 450         kfree(cfg);
 451         wake_up_all(&us122l->sk.sleep);
 452         return err;
 453 }
 454
 455 #define SND_USB_STREAM_ID "USB STREAM"
 456 static int usb_stream_hwdep_new(struct snd_card *card)
 457 {
 458         int err;
 459         struct snd_hwdep *hw;
 460         struct usb_device *dev = US122L(card)->dev;
 461
 462         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
 463         if (err < 0)
 464                 return err;
 465
 466         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
 467         hw->private_data = US122L(card);
 468         hw->ops.open = usb_stream_hwdep_open;
 469         hw->ops.release = usb_stream_hwdep_release;
 470         hw->ops.ioctl = usb_stream_hwdep_ioctl;
 471         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
 472         hw->ops.mmap = usb_stream_hwdep_mmap;
 473         hw->ops.poll = usb_stream_hwdep_poll;
 474
 475         sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm",
 476                 dev->bus->busnum, dev->devnum);
 477         return 0;
 478 }
 479
 480
 481 static bool us122l_create_card(struct snd_card *card)
 482 {
 483         int err;
 484         struct us122l *us122l = US122L(card);
 485
 486         if (us122l->is_us144) {
 487                 err = usb_set_interface(us122l->dev, 0, 1);
 488                 if (err) {
 489                         snd_printk(KERN_ERR "usb_set_interface error \n");
 490                         return false;
 491                 }
 492         }
 493         err = usb_set_interface(us122l->dev, 1, 1);
 494         if (err) {
 495                 snd_printk(KERN_ERR "usb_set_interface error \n");
 496                 return false;
 497         }
 498
 499         pt_info_set(us122l->dev, 0x11);
 500         pt_info_set(us122l->dev, 0x10);
 501
 502         if (!us122l_start(us122l, 44100, 256))
 503                 return false;
 504
 505         if (us122l->is_us144)
 506                 err = us144_create_usbmidi(card);
 507         else
 508                 err = us122l_create_usbmidi(card);
 509         if (err < 0) {
 510                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 511                 goto stop;
 512         }
 513         err = usb_stream_hwdep_new(card);
 514         if (err < 0) {
 515 /* release the midi resources */
 516                 struct list_head *p;
 517                 list_for_each(p, &us122l->midi_list)
 518                         snd_usbmidi_disconnect(p);
 519
 520                 goto stop;
 521         }
 522         return true;
 523
 524 stop:
 525         us122l_stop(us122l);
 526         return false;
 527 }
 528
 529 static void snd_us122l_free(struct snd_card *card)
 530 {
 531         struct us122l   *us122l = US122L(card);
 532         int             index = us122l->card_index;
 533         if (index >= 0  &&  index < SNDRV_CARDS)
 534                 snd_us122l_card_used[index] = 0;
 535 }
 536
 537 static int usx2y_create_card(struct usb_device *device,
 538                              struct usb_interface *intf,
 539                              struct snd_card **cardp,
 540                              unsigned long flags)
 541 {
 542         int             dev;
 543         struct snd_card *card;
 544         int err;
 545
 546         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 547                 if (enable[dev] && !snd_us122l_card_used[dev])
 548                         break;
 549         if (dev >= SNDRV_CARDS)
 550                 return -ENODEV;
 551         err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
 552                            sizeof(struct us122l), &card);
 553         if (err < 0)
 554                 return err;
 555         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 556         card->private_free = snd_us122l_free;
 557         US122L(card)->dev = device;
 558         mutex_init(&US122L(card)->mutex);
 559         init_waitqueue_head(&US122L(card)->sk.sleep);
 560         US122L(card)->is_us144 = flags & US122L_FLAG_US144;
 561         INIT_LIST_HEAD(&US122L(card)->midi_list);
 562         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 563         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 564         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 565                 card->shortname,
 566                 le16_to_cpu(device->descriptor.idVendor),
 567                 le16_to_cpu(device->descriptor.idProduct),
 568                 0,
 569                 US122L(card)->dev->bus->busnum,
 570                 US122L(card)->dev->devnum
 571                 );
 572         *cardp = card;
 573         return 0;
 574 }
 575
 576 static int us122l_usb_probe(struct usb_interface *intf,
 577                             const struct usb_device_id *device_id,
 578                             struct snd_card **cardp)
 579 {
 580         struct usb_device *device = interface_to_usbdev(intf);
 581         struct snd_card *card;
 582         int err;
 583
 584         err = usx2y_create_card(device, intf, &card, device_id->driver_info);
 585         if (err < 0)
 586                 return err;
 587
 588         if (!us122l_create_card(card)) {
 589                 snd_card_free(card);
 590                 return -EINVAL;
 591         }
 592
 593         err = snd_card_register(card);
 594         if (err < 0) {
 595                 snd_card_free(card);
 596                 return err;
 597         }
 598
 599         usb_get_intf(usb_ifnum_to_if(device, 0));
 600         usb_get_dev(device);
 601         *cardp = card;
 602         return 0;
 603 }
 604
 605 static int snd_us122l_probe(struct usb_interface *intf,
 606                             const struct usb_device_id *id)
 607 {
 608         struct usb_device *device = interface_to_usbdev(intf);
 609         struct snd_card *card;
 610         int err;
 611
 612         if (id->driver_info & US122L_FLAG_US144 &&
 613                         device->speed == USB_SPEED_HIGH) {
 614                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
 615                 return -ENODEV;
 616         }
 617
 618         snd_printdd(KERN_DEBUG"%p:%i\n",
 619                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
 620         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
 621                 return 0;
 622
 623         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
 624         if (err < 0) {
 625                 usb_put_intf(intf);
 626                 return err;
 627         }
 628
 629         usb_set_intfdata(intf, card);
 630         return 0;
 631 }
 632
 633 static void snd_us122l_disconnect(struct usb_interface *intf)
 634 {
 635         struct snd_card *card;
 636         struct us122l *us122l;
 637         struct list_head *p;
 638
 639         card = usb_get_intfdata(intf);
 640         if (!card)
 641                 return;
 642
 643         snd_card_disconnect(card);
 644
 645         us122l = US122L(card);
 646         mutex_lock(&us122l->mutex);
 647         us122l_stop(us122l);
 648         mutex_unlock(&us122l->mutex);
 649
 650 /* release the midi resources */
 651         list_for_each(p, &us122l->midi_list) {
 652                 snd_usbmidi_disconnect(p);
 653         }
 654
 655         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
 656         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
 657         usb_put_dev(us122l->dev);
 658
 659         while (atomic_read(&us122l->mmap_count))
 660                 msleep(500);
 661
 662         snd_card_free(card);
 663 }
 664
 665 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
 666 {
 667         struct snd_card *card;
 668         struct us122l *us122l;
 669         struct list_head *p;
 670
 671         card = usb_get_intfdata(intf);
 672         if (!card)
 673                 return 0;
 674         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 675
 676         us122l = US122L(card);
 677         if (!us122l)
 678                 return 0;
 679
 680         list_for_each(p, &us122l->midi_list)
 681                 snd_usbmidi_input_stop(p);
 682
 683         mutex_lock(&us122l->mutex);
 684         usb_stream_stop(&us122l->sk);
 685         mutex_unlock(&us122l->mutex);
 686
 687         return 0;
 688 }
 689
 690 static int snd_us122l_resume(struct usb_interface *intf)
 691 {
 692         struct snd_card *card;
 693         struct us122l *us122l;
 694         struct list_head *p;
 695         int err;
 696
 697         card = usb_get_intfdata(intf);
 698         if (!card)
 699                 return 0;
 700
 701         us122l = US122L(card);
 702         if (!us122l)
 703                 return 0;
 704
 705         mutex_lock(&us122l->mutex);
 706         /* needed, doesn't restart without: */
 707         if (us122l->is_us144) {
 708                 err = usb_set_interface(us122l->dev, 0, 1);
 709                 if (err) {
 710                         snd_printk(KERN_ERR "usb_set_interface error \n");
 711                         goto unlock;
 712                 }
 713         }
 714         err = usb_set_interface(us122l->dev, 1, 1);
 715         if (err) {
 716                 snd_printk(KERN_ERR "usb_set_interface error \n");
 717                 goto unlock;
 718         }
 719
 720         pt_info_set(us122l->dev, 0x11);
 721         pt_info_set(us122l->dev, 0x10);
 722
 723         err = us122l_set_sample_rate(us122l->dev,
 724                                      us122l->sk.s->cfg.sample_rate);
 725         if (err < 0) {
 726                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 727                 goto unlock;
 728         }
 729         err = usb_stream_start(&us122l->sk);
 730         if (err)
 731                 goto unlock;
 732
 733         list_for_each(p, &us122l->midi_list)
 734                 snd_usbmidi_input_start(p);
 735 unlock:
 736         mutex_unlock(&us122l->mutex);
 737         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 738         return err;
 739 }
 740
 741 static const struct usb_device_id snd_us122l_usb_id_table[] = {
 742         {
 743                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 744                 .idVendor =     0x0644,
 745                 .idProduct =    USB_ID_US122L
 746         },
 747         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
 748                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 749                 .idVendor =     0x0644,
 750                 .idProduct =    USB_ID_US144,
 751                 .driver_info =  US122L_FLAG_US144
 752         },
 753         {
 754                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 755                 .idVendor =     0x0644,
 756                 .idProduct =    USB_ID_US122MKII
 757         },
 758         {
 759                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 760                 .idVendor =     0x0644,
 761                 .idProduct =    USB_ID_US144MKII,
 762                 .driver_info =  US122L_FLAG_US144
 763         },
 764         { /* terminator */ }
 765 };
 766
 767 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 768 static struct usb_driver snd_us122l_usb_driver = {
 769         .name =         "snd-usb-us122l",
 770         .probe =        snd_us122l_probe,
 771         .disconnect =   snd_us122l_disconnect,
 772         .suspend =      snd_us122l_suspend,
 773         .resume =       snd_us122l_resume,
 774         .reset_resume = snd_us122l_resume,
 775         .id_table =     snd_us122l_usb_id_table,
 776         .supports_autosuspend = 1
 777 };
 778
 779 module_usb_driver(snd_us122l_usb_driver);