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_DONTDUMP;
 266         if (!read)
 267                 area->vm_flags |= VM_DONTEXPAND;
 268         area->vm_private_data = us122l;
 269         atomic_inc(&us122l->mmap_count);
 270 out:
 271         mutex_unlock(&us122l->mutex);
 272         return err;
 273 }
 274
 275 static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
 276                                           struct file *file, poll_table *wait)
 277 {
 278         struct us122l   *us122l = hw->private_data;
 279         unsigned        *polled;
 280         unsigned int    mask;
 281
 282         poll_wait(file, &us122l->sk.sleep, wait);
 283
 284         mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
 285         if (mutex_trylock(&us122l->mutex)) {
 286                 struct usb_stream *s = us122l->sk.s;
 287                 if (s && s->state == usb_stream_ready) {
 288                         if (us122l->first == file)
 289                                 polled = &s->periods_polled;
 290                         else
 291                                 polled = &us122l->second_periods_polled;
 292                         if (*polled != s->periods_done) {
 293                                 *polled = s->periods_done;
 294                                 mask = POLLIN | POLLOUT | POLLWRNORM;
 295                         } else
 296                                 mask = 0;
 297                 }
 298                 mutex_unlock(&us122l->mutex);
 299         }
 300         return mask;
 301 }
 302
 303 static void us122l_stop(struct us122l *us122l)
 304 {
 305         struct list_head *p;
 306         list_for_each(p, &us122l->midi_list)
 307                 snd_usbmidi_input_stop(p);
 308
 309         usb_stream_stop(&us122l->sk);
 310         usb_stream_free(&us122l->sk);
 311 }
 312
 313 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
 314 {
 315         unsigned int ep = 0x81;
 316         unsigned char data[3];
 317         int err;
 318
 319         data[0] = rate;
 320         data[1] = rate >> 8;
 321         data[2] = rate >> 16;
 322         err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
 323                              USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
 324                              UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000);
 325         if (err < 0)
 326                 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
 327                            dev->devnum, rate, ep);
 328         return err;
 329 }
 330
 331 static bool us122l_start(struct us122l *us122l,
 332                          unsigned rate, unsigned period_frames)
 333 {
 334         struct list_head *p;
 335         int err;
 336         unsigned use_packsize = 0;
 337         bool success = false;
 338
 339         if (us122l->dev->speed == USB_SPEED_HIGH) {
 340                 /* The us-122l's descriptor defaults to iso max_packsize 78,
 341                    which isn't needed for samplerates <= 48000.
 342                    Lets save some memory:
 343                 */
 344                 switch (rate) {
 345                 case 44100:
 346                         use_packsize = 36;
 347                         break;
 348                 case 48000:
 349                         use_packsize = 42;
 350                         break;
 351                 case 88200:
 352                         use_packsize = 72;
 353                         break;
 354                 }
 355         }
 356         if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
 357                             rate, use_packsize, period_frames, 6))
 358                 goto out;
 359
 360         err = us122l_set_sample_rate(us122l->dev, rate);
 361         if (err < 0) {
 362                 us122l_stop(us122l);
 363                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 364                 goto out;
 365         }
 366         err = usb_stream_start(&us122l->sk);
 367         if (err < 0) {
 368                 us122l_stop(us122l);
 369                 snd_printk(KERN_ERR "us122l_start error %i \n", err);
 370                 goto out;
 371         }
 372         list_for_each(p, &us122l->midi_list)
 373                 snd_usbmidi_input_start(p);
 374         success = true;
 375 out:
 376         return success;
 377 }
 378
 379 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
 380                                   unsigned cmd, unsigned long arg)
 381 {
 382         struct usb_stream_config *cfg;
 383         struct us122l *us122l = hw->private_data;
 384         struct usb_stream *s;
 385         unsigned min_period_frames;
 386         int err = 0;
 387         bool high_speed;
 388
 389         if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
 390                 return -ENOTTY;
 391
 392         cfg = memdup_user((void *)arg, sizeof(*cfg));
 393         if (IS_ERR(cfg))
 394                 return PTR_ERR(cfg);
 395
 396         if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
 397                 err = -ENXIO;
 398                 goto free;
 399         }
 400         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
 401         if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
 402              (!high_speed ||
 403               (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
 404             cfg->frame_size != 6 ||
 405             cfg->period_frames > 0x3000) {
 406                 err = -EINVAL;
 407                 goto free;
 408         }
 409         switch (cfg->sample_rate) {
 410         case 44100:
 411                 min_period_frames = 48;
 412                 break;
 413         case 48000:
 414                 min_period_frames = 52;
 415                 break;
 416         default:
 417                 min_period_frames = 104;
 418                 break;
 419         }
 420         if (!high_speed)
 421                 min_period_frames <<= 1;
 422         if (cfg->period_frames < min_period_frames) {
 423                 err = -EINVAL;
 424                 goto free;
 425         }
 426
 427         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
 428
 429         mutex_lock(&us122l->mutex);
 430         s = us122l->sk.s;
 431         if (!us122l->master)
 432                 us122l->master = file;
 433         else if (us122l->master != file) {
 434                 if (!s || memcmp(cfg, &s->cfg, sizeof(*cfg))) {
 435                         err = -EIO;
 436                         goto unlock;
 437                 }
 438                 us122l->slave = file;
 439         }
 440         if (!s || memcmp(cfg, &s->cfg, sizeof(*cfg)) ||
 441             s->state == usb_stream_xrun) {
 442                 us122l_stop(us122l);
 443                 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
 444                         err = -EIO;
 445                 else
 446                         err = 1;
 447         }
 448 unlock:
 449         mutex_unlock(&us122l->mutex);
 450 free:
 451         kfree(cfg);
 452         wake_up_all(&us122l->sk.sleep);
 453         return err;
 454 }
 455
 456 #define SND_USB_STREAM_ID "USB STREAM"
 457 static int usb_stream_hwdep_new(struct snd_card *card)
 458 {
 459         int err;
 460         struct snd_hwdep *hw;
 461         struct usb_device *dev = US122L(card)->dev;
 462
 463         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
 464         if (err < 0)
 465                 return err;
 466
 467         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
 468         hw->private_data = US122L(card);
 469         hw->ops.open = usb_stream_hwdep_open;
 470         hw->ops.release = usb_stream_hwdep_release;
 471         hw->ops.ioctl = usb_stream_hwdep_ioctl;
 472         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
 473         hw->ops.mmap = usb_stream_hwdep_mmap;
 474         hw->ops.poll = usb_stream_hwdep_poll;
 475
 476         sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm",
 477                 dev->bus->busnum, dev->devnum);
 478         return 0;
 479 }
 480
 481
 482 static bool us122l_create_card(struct snd_card *card)
 483 {
 484         int err;
 485         struct us122l *us122l = US122L(card);
 486
 487         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 488             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 489                 err = usb_set_interface(us122l->dev, 0, 1);
 490                 if (err) {
 491                         snd_printk(KERN_ERR "usb_set_interface error \n");
 492                         return false;
 493                 }
 494         }
 495         err = usb_set_interface(us122l->dev, 1, 1);
 496         if (err) {
 497                 snd_printk(KERN_ERR "usb_set_interface error \n");
 498                 return false;
 499         }
 500
 501         pt_info_set(us122l->dev, 0x11);
 502         pt_info_set(us122l->dev, 0x10);
 503
 504         if (!us122l_start(us122l, 44100, 256))
 505                 return false;
 506
 507         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 508             us122l->dev->descriptor.idProduct == USB_ID_US144MKII)
 509                 err = us144_create_usbmidi(card);
 510         else
 511                 err = us122l_create_usbmidi(card);
 512         if (err < 0) {
 513                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 514                 us122l_stop(us122l);
 515                 return false;
 516         }
 517         err = usb_stream_hwdep_new(card);
 518         if (err < 0) {
 519 /* release the midi resources */
 520                 struct list_head *p;
 521                 list_for_each(p, &us122l->midi_list)
 522                         snd_usbmidi_disconnect(p);
 523
 524                 us122l_stop(us122l);
 525                 return false;
 526         }
 527         return true;
 528 }
 529
 530 static void snd_us122l_free(struct snd_card *card)
 531 {
 532         struct us122l   *us122l = US122L(card);
 533         int             index = us122l->card_index;
 534         if (index >= 0  &&  index < SNDRV_CARDS)
 535                 snd_us122l_card_used[index] = 0;
 536 }
 537
 538 static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
 539 {
 540         int             dev;
 541         struct snd_card *card;
 542         int err;
 543
 544         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 545                 if (enable[dev] && !snd_us122l_card_used[dev])
 546                         break;
 547         if (dev >= SNDRV_CARDS)
 548                 return -ENODEV;
 549         err = snd_card_create(index[dev], id[dev], THIS_MODULE,
 550                               sizeof(struct us122l), &card);
 551         if (err < 0)
 552                 return err;
 553         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 554         card->private_free = snd_us122l_free;
 555         US122L(card)->dev = device;
 556         mutex_init(&US122L(card)->mutex);
 557         init_waitqueue_head(&US122L(card)->sk.sleep);
 558         INIT_LIST_HEAD(&US122L(card)->midi_list);
 559         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 560         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 561         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 562                 card->shortname,
 563                 le16_to_cpu(device->descriptor.idVendor),
 564                 le16_to_cpu(device->descriptor.idProduct),
 565                 0,
 566                 US122L(card)->dev->bus->busnum,
 567                 US122L(card)->dev->devnum
 568                 );
 569         *cardp = card;
 570         return 0;
 571 }
 572
 573 static int us122l_usb_probe(struct usb_interface *intf,
 574                             const struct usb_device_id *device_id,
 575                             struct snd_card **cardp)
 576 {
 577         struct usb_device *device = interface_to_usbdev(intf);
 578         struct snd_card *card;
 579         int err;
 580
 581         err = usx2y_create_card(device, &card);
 582         if (err < 0)
 583                 return err;
 584
 585         snd_card_set_dev(card, &intf->dev);
 586         if (!us122l_create_card(card)) {
 587                 snd_card_free(card);
 588                 return -EINVAL;
 589         }
 590
 591         err = snd_card_register(card);
 592         if (err < 0) {
 593                 snd_card_free(card);
 594                 return err;
 595         }
 596
 597         usb_get_intf(usb_ifnum_to_if(device, 0));
 598         usb_get_dev(device);
 599         *cardp = card;
 600         return 0;
 601 }
 602
 603 static int snd_us122l_probe(struct usb_interface *intf,
 604                             const struct usb_device_id *id)
 605 {
 606         struct usb_device *device = interface_to_usbdev(intf);
 607         struct snd_card *card;
 608         int err;
 609
 610         if ((device->descriptor.idProduct == USB_ID_US144 ||
 611              device->descriptor.idProduct == USB_ID_US144MKII)
 612                 && device->speed == USB_SPEED_HIGH) {
 613                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
 614                 return -ENODEV;
 615         }
 616
 617         snd_printdd(KERN_DEBUG"%p:%i\n",
 618                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
 619         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
 620                 return 0;
 621
 622         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
 623         if (err < 0) {
 624                 usb_put_intf(intf);
 625                 return err;
 626         }
 627
 628         usb_set_intfdata(intf, card);
 629         return 0;
 630 }
 631
 632 static void snd_us122l_disconnect(struct usb_interface *intf)
 633 {
 634         struct snd_card *card;
 635         struct us122l *us122l;
 636         struct list_head *p;
 637
 638         card = usb_get_intfdata(intf);
 639         if (!card)
 640                 return;
 641
 642         snd_card_disconnect(card);
 643
 644         us122l = US122L(card);
 645         mutex_lock(&us122l->mutex);
 646         us122l_stop(us122l);
 647         mutex_unlock(&us122l->mutex);
 648
 649 /* release the midi resources */
 650         list_for_each(p, &us122l->midi_list) {
 651                 snd_usbmidi_disconnect(p);
 652         }
 653
 654         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
 655         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
 656         usb_put_dev(us122l->dev);
 657
 658         while (atomic_read(&us122l->mmap_count))
 659                 msleep(500);
 660
 661         snd_card_free(card);
 662 }
 663
 664 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
 665 {
 666         struct snd_card *card;
 667         struct us122l *us122l;
 668         struct list_head *p;
 669
 670         card = usb_get_intfdata(intf);
 671         if (!card)
 672                 return 0;
 673         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 674
 675         us122l = US122L(card);
 676         if (!us122l)
 677                 return 0;
 678
 679         list_for_each(p, &us122l->midi_list)
 680                 snd_usbmidi_input_stop(p);
 681
 682         mutex_lock(&us122l->mutex);
 683         usb_stream_stop(&us122l->sk);
 684         mutex_unlock(&us122l->mutex);
 685
 686         return 0;
 687 }
 688
 689 static int snd_us122l_resume(struct usb_interface *intf)
 690 {
 691         struct snd_card *card;
 692         struct us122l *us122l;
 693         struct list_head *p;
 694         int err;
 695
 696         card = usb_get_intfdata(intf);
 697         if (!card)
 698                 return 0;
 699
 700         us122l = US122L(card);
 701         if (!us122l)
 702                 return 0;
 703
 704         mutex_lock(&us122l->mutex);
 705         /* needed, doesn't restart without: */
 706         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 707             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 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 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         },
 752         {
 753                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 754                 .idVendor =     0x0644,
 755                 .idProduct =    USB_ID_US122MKII
 756         },
 757         {
 758                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 759                 .idVendor =     0x0644,
 760                 .idProduct =    USB_ID_US144MKII
 761         },
 762         { /* terminator */ }
 763 };
 764
 765 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 766 static struct usb_driver snd_us122l_usb_driver = {
 767         .name =         "snd-usb-us122l",
 768         .probe =        snd_us122l_probe,
 769         .disconnect =   snd_us122l_disconnect,
 770         .suspend =      snd_us122l_suspend,
 771         .resume =       snd_us122l_resume,
 772         .reset_resume = snd_us122l_resume,
 773         .id_table =     snd_us122l_usb_id_table,
 774         .supports_autosuspend = 1
 775 };
 776
 777 module_usb_driver(snd_us122l_usb_driver);