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 static int snd_us122l_card_used[SNDRV_CARDS];
  50
  51
  52 static int us122l_create_usbmidi(struct snd_card *card)
  53 {
  54         static struct snd_usb_midi_endpoint_info quirk_data = {
  55                 .out_ep = 4,
  56                 .in_ep = 3,
  57                 .out_cables =   0x001,
  58                 .in_cables =    0x001
  59         };
  60         static struct snd_usb_audio_quirk quirk = {
  61                 .vendor_name =  "US122L",
  62                 .product_name = NAME_ALLCAPS,
  63                 .ifnum =        1,
  64                 .type = QUIRK_MIDI_US122L,
  65                 .data = &quirk_data
  66         };
  67         struct usb_device *dev = US122L(card)->dev;
  68         struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
  69
  70         return snd_usbmidi_create(card, iface,
  71                                   &US122L(card)->midi_list, &quirk);
  72 }
  73
  74 static int us144_create_usbmidi(struct snd_card *card)
  75 {
  76         static struct snd_usb_midi_endpoint_info quirk_data = {
  77                 .out_ep = 4,
  78                 .in_ep = 3,
  79                 .out_cables =   0x001,
  80                 .in_cables =    0x001
  81         };
  82         static struct snd_usb_audio_quirk quirk = {
  83                 .vendor_name =  "US144",
  84                 .product_name = NAME_ALLCAPS,
  85                 .ifnum =        0,
  86                 .type = QUIRK_MIDI_US122L,
  87                 .data = &quirk_data
  88         };
  89         struct usb_device *dev = US122L(card)->dev;
  90         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
  91
  92         return snd_usbmidi_create(card, iface,
  93                                   &US122L(card)->midi_list, &quirk);
  94 }
  95
  96 /*
  97  * Wrapper for usb_control_msg().
  98  * Allocates a temp buffer to prevent dmaing from/to the stack.
  99  */
 100 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
 101                           __u8 request, __u8 requesttype,
 102                           __u16 value, __u16 index, void *data,
 103                           __u16 size, int timeout)
 104 {
 105         int err;
 106         void *buf = NULL;
 107
 108         if (size > 0) {
 109                 buf = kmemdup(data, size, GFP_KERNEL);
 110                 if (!buf)
 111                         return -ENOMEM;
 112         }
 113         err = usb_control_msg(dev, pipe, request, requesttype,
 114                               value, index, buf, size, timeout);
 115         if (size > 0) {
 116                 memcpy(data, buf, size);
 117                 kfree(buf);
 118         }
 119         return err;
 120 }
 121
 122 static void pt_info_set(struct usb_device *dev, u8 v)
 123 {
 124         int ret;
 125
 126         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 127                               'I',
 128                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 129                               v, 0, NULL, 0, 1000);
 130         snd_printdd(KERN_DEBUG "%i\n", ret);
 131 }
 132
 133 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
 134 {
 135         struct us122l *us122l = area->vm_private_data;
 136         atomic_inc(&us122l->mmap_count);
 137         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 138 }
 139
 140 static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
 141                                      struct vm_fault *vmf)
 142 {
 143         unsigned long offset;
 144         struct page *page;
 145         void *vaddr;
 146         struct us122l *us122l = area->vm_private_data;
 147         struct usb_stream *s;
 148
 149         mutex_lock(&us122l->mutex);
 150         s = us122l->sk.s;
 151         if (!s)
 152                 goto unlock;
 153
 154         offset = vmf->pgoff << PAGE_SHIFT;
 155         if (offset < PAGE_ALIGN(s->read_size))
 156                 vaddr = (char *)s + offset;
 157         else {
 158                 offset -= PAGE_ALIGN(s->read_size);
 159                 if (offset >= PAGE_ALIGN(s->write_size))
 160                         goto unlock;
 161
 162                 vaddr = us122l->sk.write_page + offset;
 163         }
 164         page = virt_to_page(vaddr);
 165
 166         get_page(page);
 167         mutex_unlock(&us122l->mutex);
 168
 169         vmf->page = page;
 170
 171         return 0;
 172 unlock:
 173         mutex_unlock(&us122l->mutex);
 174         return VM_FAULT_SIGBUS;
 175 }
 176
 177 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
 178 {
 179         struct us122l *us122l = area->vm_private_data;
 180         atomic_dec(&us122l->mmap_count);
 181         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 182 }
 183
 184 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
 185         .open = usb_stream_hwdep_vm_open,
 186         .fault = usb_stream_hwdep_vm_fault,
 187         .close = usb_stream_hwdep_vm_close,
 188 };
 189
 190
 191 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
 192 {
 193         struct us122l   *us122l = hw->private_data;
 194         struct usb_interface *iface;
 195         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 196         if (hw->used >= 2)
 197                 return -EBUSY;
 198
 199         if (!us122l->first)
 200                 us122l->first = file;
 201
 202         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 203             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 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->dev->descriptor.idProduct == USB_ID_US144 ||
 219             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 220                 iface = usb_ifnum_to_if(us122l->dev, 0);
 221                 usb_autopm_put_interface(iface);
 222         }
 223         iface = usb_ifnum_to_if(us122l->dev, 1);
 224         usb_autopm_put_interface(iface);
 225         if (us122l->first == file)
 226                 us122l->first = NULL;
 227         mutex_lock(&us122l->mutex);
 228         if (us122l->master == file)
 229                 us122l->master = us122l->slave;
 230
 231         us122l->slave = NULL;
 232         mutex_unlock(&us122l->mutex);
 233         return 0;
 234 }
 235
 236 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
 237                                  struct file *filp, struct vm_area_struct *area)
 238 {
 239         unsigned long   size = area->vm_end - area->vm_start;
 240         struct us122l   *us122l = hw->private_data;
 241         unsigned long offset;
 242         struct usb_stream *s;
 243         int err = 0;
 244         bool read;
 245
 246         offset = area->vm_pgoff << PAGE_SHIFT;
 247         mutex_lock(&us122l->mutex);
 248         s = us122l->sk.s;
 249         read = offset < s->read_size;
 250         if (read && area->vm_flags & VM_WRITE) {
 251                 err = -EPERM;
 252                 goto out;
 253         }
 254         snd_printdd(KERN_DEBUG "%lu %u\n", size,
 255                     read ? s->read_size : s->write_size);
 256         /* if userspace tries to mmap beyond end of our buffer, fail */
 257         if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
 258                 snd_printk(KERN_WARNING "%lu > %u\n", size,
 259                            read ? s->read_size : s->write_size);
 260                 err = -EINVAL;
 261                 goto out;
 262         }
 263
 264         area->vm_ops = &usb_stream_hwdep_vm_ops;
 265         area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 266         area->vm_private_data = us122l;
 267         atomic_inc(&us122l->mmap_count);
 268 out:
 269         mutex_unlock(&us122l->mutex);
 270         return err;
 271 }
 272
 273 static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
 274                                           struct file *file, poll_table *wait)
 275 {
 276         struct us122l   *us122l = hw->private_data;
 277         unsigned        *polled;
 278         unsigned int    mask;
 279
 280         poll_wait(file, &us122l->sk.sleep, wait);
 281
 282         mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
 283         if (mutex_trylock(&us122l->mutex)) {
 284                 struct usb_stream *s = us122l->sk.s;
 285                 if (s && s->state == usb_stream_ready) {
 286                         if (us122l->first == file)
 287                                 polled = &s->periods_polled;
 288                         else
 289                                 polled = &us122l->second_periods_polled;
 290                         if (*polled != s->periods_done) {
 291                                 *polled = s->periods_done;
 292                                 mask = POLLIN | POLLOUT | POLLWRNORM;
 293                         } else
 294                                 mask = 0;
 295                 }
 296                 mutex_unlock(&us122l->mutex);
 297         }
 298         return mask;
 299 }
 300
 301 static void us122l_stop(struct us122l *us122l)
 302 {
 303         struct list_head *p;
 304         list_for_each(p, &us122l->midi_list)
 305                 snd_usbmidi_input_stop(p);
 306
 307         usb_stream_stop(&us122l->sk);
 308         usb_stream_free(&us122l->sk);
 309 }
 310
 311 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
 312 {
 313         unsigned int ep = 0x81;
 314         unsigned char data[3];
 315         int err;
 316
 317         data[0] = rate;
 318         data[1] = rate >> 8;
 319         data[2] = rate >> 16;
 320         err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
 321                              USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
 322                              UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000);
 323         if (err < 0)
 324                 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
 325                            dev->devnum, rate, ep);
 326         return err;
 327 }
 328
 329 static bool us122l_start(struct us122l *us122l,
 330                          unsigned rate, unsigned period_frames)
 331 {
 332         struct list_head *p;
 333         int err;
 334         unsigned use_packsize = 0;
 335         bool success = false;
 336
 337         if (us122l->dev->speed == USB_SPEED_HIGH) {
 338                 /* The us-122l's descriptor defaults to iso max_packsize 78,
 339                    which isn't needed for samplerates <= 48000.
 340                    Lets save some memory:
 341                 */
 342                 switch (rate) {
 343                 case 44100:
 344                         use_packsize = 36;
 345                         break;
 346                 case 48000:
 347                         use_packsize = 42;
 348                         break;
 349                 case 88200:
 350                         use_packsize = 72;
 351                         break;
 352                 }
 353         }
 354         if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
 355                             rate, use_packsize, period_frames, 6))
 356                 goto out;
 357
 358         err = us122l_set_sample_rate(us122l->dev, rate);
 359         if (err < 0) {
 360                 us122l_stop(us122l);
 361                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 362                 goto out;
 363         }
 364         err = usb_stream_start(&us122l->sk);
 365         if (err < 0) {
 366                 us122l_stop(us122l);
 367                 snd_printk(KERN_ERR "us122l_start error %i \n", err);
 368                 goto out;
 369         }
 370         list_for_each(p, &us122l->midi_list)
 371                 snd_usbmidi_input_start(p);
 372         success = true;
 373 out:
 374         return success;
 375 }
 376
 377 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
 378                                   unsigned cmd, unsigned long arg)
 379 {
 380         struct usb_stream_config *cfg;
 381         struct us122l *us122l = hw->private_data;
 382         struct usb_stream *s;
 383         unsigned min_period_frames;
 384         int err = 0;
 385         bool high_speed;
 386
 387         if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
 388                 return -ENOTTY;
 389
 390         cfg = memdup_user((void *)arg, sizeof(*cfg));
 391         if (IS_ERR(cfg))
 392                 return PTR_ERR(cfg);
 393
 394         if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
 395                 err = -ENXIO;
 396                 goto free;
 397         }
 398         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
 399         if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
 400              (!high_speed ||
 401               (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
 402             cfg->frame_size != 6 ||
 403             cfg->period_frames > 0x3000) {
 404                 err = -EINVAL;
 405                 goto free;
 406         }
 407         switch (cfg->sample_rate) {
 408         case 44100:
 409                 min_period_frames = 48;
 410                 break;
 411         case 48000:
 412                 min_period_frames = 52;
 413                 break;
 414         default:
 415                 min_period_frames = 104;
 416                 break;
 417         }
 418         if (!high_speed)
 419                 min_period_frames <<= 1;
 420         if (cfg->period_frames < min_period_frames) {
 421                 err = -EINVAL;
 422                 goto free;
 423         }
 424
 425         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
 426
 427         mutex_lock(&us122l->mutex);
 428         s = us122l->sk.s;
 429         if (!us122l->master)
 430                 us122l->master = file;
 431         else if (us122l->master != file) {
 432                 if (!s || memcmp(cfg, &s->cfg, sizeof(*cfg))) {
 433                         err = -EIO;
 434                         goto unlock;
 435                 }
 436                 us122l->slave = file;
 437         }
 438         if (!s || memcmp(cfg, &s->cfg, sizeof(*cfg)) ||
 439             s->state == usb_stream_xrun) {
 440                 us122l_stop(us122l);
 441                 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
 442                         err = -EIO;
 443                 else
 444                         err = 1;
 445         }
 446 unlock:
 447         mutex_unlock(&us122l->mutex);
 448 free:
 449         kfree(cfg);
 450         wake_up_all(&us122l->sk.sleep);
 451         return err;
 452 }
 453
 454 #define SND_USB_STREAM_ID "USB STREAM"
 455 static int usb_stream_hwdep_new(struct snd_card *card)
 456 {
 457         int err;
 458         struct snd_hwdep *hw;
 459         struct usb_device *dev = US122L(card)->dev;
 460
 461         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
 462         if (err < 0)
 463                 return err;
 464
 465         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
 466         hw->private_data = US122L(card);
 467         hw->ops.open = usb_stream_hwdep_open;
 468         hw->ops.release = usb_stream_hwdep_release;
 469         hw->ops.ioctl = usb_stream_hwdep_ioctl;
 470         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
 471         hw->ops.mmap = usb_stream_hwdep_mmap;
 472         hw->ops.poll = usb_stream_hwdep_poll;
 473
 474         sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm",
 475                 dev->bus->busnum, dev->devnum);
 476         return 0;
 477 }
 478
 479
 480 static bool us122l_create_card(struct snd_card *card)
 481 {
 482         int err;
 483         struct us122l *us122l = US122L(card);
 484
 485         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 486             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 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->dev->descriptor.idProduct == USB_ID_US144 ||
 506             us122l->dev->descriptor.idProduct == USB_ID_US144MKII)
 507                 err = us144_create_usbmidi(card);
 508         else
 509                 err = us122l_create_usbmidi(card);
 510         if (err < 0) {
 511                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 512                 us122l_stop(us122l);
 513                 return false;
 514         }
 515         err = usb_stream_hwdep_new(card);
 516         if (err < 0) {
 517 /* release the midi resources */
 518                 struct list_head *p;
 519                 list_for_each(p, &us122l->midi_list)
 520                         snd_usbmidi_disconnect(p);
 521
 522                 us122l_stop(us122l);
 523                 return false;
 524         }
 525         return true;
 526 }
 527
 528 static void snd_us122l_free(struct snd_card *card)
 529 {
 530         struct us122l   *us122l = US122L(card);
 531         int             index = us122l->card_index;
 532         if (index >= 0  &&  index < SNDRV_CARDS)
 533                 snd_us122l_card_used[index] = 0;
 534 }
 535
 536 static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
 537 {
 538         int             dev;
 539         struct snd_card *card;
 540         int err;
 541
 542         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 543                 if (enable[dev] && !snd_us122l_card_used[dev])
 544                         break;
 545         if (dev >= SNDRV_CARDS)
 546                 return -ENODEV;
 547         err = snd_card_create(index[dev], id[dev], THIS_MODULE,
 548                               sizeof(struct us122l), &card);
 549         if (err < 0)
 550                 return err;
 551         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 552         card->private_free = snd_us122l_free;
 553         US122L(card)->dev = device;
 554         mutex_init(&US122L(card)->mutex);
 555         init_waitqueue_head(&US122L(card)->sk.sleep);
 556         INIT_LIST_HEAD(&US122L(card)->midi_list);
 557         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 558         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 559         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 560                 card->shortname,
 561                 le16_to_cpu(device->descriptor.idVendor),
 562                 le16_to_cpu(device->descriptor.idProduct),
 563                 0,
 564                 US122L(card)->dev->bus->busnum,
 565                 US122L(card)->dev->devnum
 566                 );
 567         *cardp = card;
 568         return 0;
 569 }
 570
 571 static int us122l_usb_probe(struct usb_interface *intf,
 572                             const struct usb_device_id *device_id,
 573                             struct snd_card **cardp)
 574 {
 575         struct usb_device *device = interface_to_usbdev(intf);
 576         struct snd_card *card;
 577         int err;
 578
 579         err = usx2y_create_card(device, &card);
 580         if (err < 0)
 581                 return err;
 582
 583         snd_card_set_dev(card, &intf->dev);
 584         if (!us122l_create_card(card)) {
 585                 snd_card_free(card);
 586                 return -EINVAL;
 587         }
 588
 589         err = snd_card_register(card);
 590         if (err < 0) {
 591                 snd_card_free(card);
 592                 return err;
 593         }
 594
 595         usb_get_intf(usb_ifnum_to_if(device, 0));
 596         usb_get_dev(device);
 597         *cardp = card;
 598         return 0;
 599 }
 600
 601 static int snd_us122l_probe(struct usb_interface *intf,
 602                             const struct usb_device_id *id)
 603 {
 604         struct usb_device *device = interface_to_usbdev(intf);
 605         struct snd_card *card;
 606         int err;
 607
 608         if ((device->descriptor.idProduct == USB_ID_US144 ||
 609              device->descriptor.idProduct == USB_ID_US144MKII)
 610                 && device->speed == USB_SPEED_HIGH) {
 611                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
 612                 return -ENODEV;
 613         }
 614
 615         snd_printdd(KERN_DEBUG"%p:%i\n",
 616                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
 617         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
 618                 return 0;
 619
 620         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
 621         if (err < 0) {
 622                 usb_put_intf(intf);
 623                 return err;
 624         }
 625
 626         usb_set_intfdata(intf, card);
 627         return 0;
 628 }
 629
 630 static void snd_us122l_disconnect(struct usb_interface *intf)
 631 {
 632         struct snd_card *card;
 633         struct us122l *us122l;
 634         struct list_head *p;
 635
 636         card = usb_get_intfdata(intf);
 637         if (!card)
 638                 return;
 639
 640         snd_card_disconnect(card);
 641
 642         us122l = US122L(card);
 643         mutex_lock(&us122l->mutex);
 644         us122l_stop(us122l);
 645         mutex_unlock(&us122l->mutex);
 646
 647 /* release the midi resources */
 648         list_for_each(p, &us122l->midi_list) {
 649                 snd_usbmidi_disconnect(p);
 650         }
 651
 652         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
 653         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
 654         usb_put_dev(us122l->dev);
 655
 656         while (atomic_read(&us122l->mmap_count))
 657                 msleep(500);
 658
 659         snd_card_free(card);
 660 }
 661
 662 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
 663 {
 664         struct snd_card *card;
 665         struct us122l *us122l;
 666         struct list_head *p;
 667
 668         card = usb_get_intfdata(intf);
 669         if (!card)
 670                 return 0;
 671         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 672
 673         us122l = US122L(card);
 674         if (!us122l)
 675                 return 0;
 676
 677         list_for_each(p, &us122l->midi_list)
 678                 snd_usbmidi_input_stop(p);
 679
 680         mutex_lock(&us122l->mutex);
 681         usb_stream_stop(&us122l->sk);
 682         mutex_unlock(&us122l->mutex);
 683
 684         return 0;
 685 }
 686
 687 static int snd_us122l_resume(struct usb_interface *intf)
 688 {
 689         struct snd_card *card;
 690         struct us122l *us122l;
 691         struct list_head *p;
 692         int err;
 693
 694         card = usb_get_intfdata(intf);
 695         if (!card)
 696                 return 0;
 697
 698         us122l = US122L(card);
 699         if (!us122l)
 700                 return 0;
 701
 702         mutex_lock(&us122l->mutex);
 703         /* needed, doesn't restart without: */
 704         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 705             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 706                 err = usb_set_interface(us122l->dev, 0, 1);
 707                 if (err) {
 708                         snd_printk(KERN_ERR "usb_set_interface error \n");
 709                         goto unlock;
 710                 }
 711         }
 712         err = usb_set_interface(us122l->dev, 1, 1);
 713         if (err) {
 714                 snd_printk(KERN_ERR "usb_set_interface error \n");
 715                 goto unlock;
 716         }
 717
 718         pt_info_set(us122l->dev, 0x11);
 719         pt_info_set(us122l->dev, 0x10);
 720
 721         err = us122l_set_sample_rate(us122l->dev,
 722                                      us122l->sk.s->cfg.sample_rate);
 723         if (err < 0) {
 724                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 725                 goto unlock;
 726         }
 727         err = usb_stream_start(&us122l->sk);
 728         if (err)
 729                 goto unlock;
 730
 731         list_for_each(p, &us122l->midi_list)
 732                 snd_usbmidi_input_start(p);
 733 unlock:
 734         mutex_unlock(&us122l->mutex);
 735         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 736         return err;
 737 }
 738
 739 static struct usb_device_id snd_us122l_usb_id_table[] = {
 740         {
 741                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 742                 .idVendor =     0x0644,
 743                 .idProduct =    USB_ID_US122L
 744         },
 745         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
 746                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 747                 .idVendor =     0x0644,
 748                 .idProduct =    USB_ID_US144
 749         },
 750         {
 751                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 752                 .idVendor =     0x0644,
 753                 .idProduct =    USB_ID_US122MKII
 754         },
 755         {
 756                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 757                 .idVendor =     0x0644,
 758                 .idProduct =    USB_ID_US144MKII
 759         },
 760         { /* terminator */ }
 761 };
 762
 763 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 764 static struct usb_driver snd_us122l_usb_driver = {
 765         .name =         "snd-usb-us122l",
 766         .probe =        snd_us122l_probe,
 767         .disconnect =   snd_us122l_disconnect,
 768         .suspend =      snd_us122l_suspend,
 769         .resume =       snd_us122l_resume,
 770         .reset_resume = snd_us122l_resume,
 771         .id_table =     snd_us122l_usb_id_table,
 772         .supports_autosuspend = 1
 773 };
 774
 775 module_usb_driver(snd_us122l_usb_driver);