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_fault *vmf)
 141 {
 142         unsigned long offset;
 143         struct page *page;
 144         void *vaddr;
 145         struct us122l *us122l = vmf->vma->vm_private_data;
 146         struct usb_stream *s;
 147
 148         mutex_lock(&us122l->mutex);
 149         s = us122l->sk.s;
 150         if (!s)
 151                 goto unlock;
 152
 153         offset = vmf->pgoff << PAGE_SHIFT;
 154         if (offset < PAGE_ALIGN(s->read_size))
 155                 vaddr = (char *)s + offset;
 156         else {
 157                 offset -= PAGE_ALIGN(s->read_size);
 158                 if (offset >= PAGE_ALIGN(s->write_size))
 159                         goto unlock;
 160
 161                 vaddr = us122l->sk.write_page + offset;
 162         }
 163         page = virt_to_page(vaddr);
 164
 165         get_page(page);
 166         mutex_unlock(&us122l->mutex);
 167
 168         vmf->page = page;
 169
 170         return 0;
 171 unlock:
 172         mutex_unlock(&us122l->mutex);
 173         return VM_FAULT_SIGBUS;
 174 }
 175
 176 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
 177 {
 178         struct us122l *us122l = area->vm_private_data;
 179         atomic_dec(&us122l->mmap_count);
 180         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 181 }
 182
 183 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
 184         .open = usb_stream_hwdep_vm_open,
 185         .fault = usb_stream_hwdep_vm_fault,
 186         .close = usb_stream_hwdep_vm_close,
 187 };
 188
 189
 190 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
 191 {
 192         struct us122l   *us122l = hw->private_data;
 193         struct usb_interface *iface;
 194         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 195         if (hw->used >= 2)
 196                 return -EBUSY;
 197
 198         if (!us122l->first)
 199                 us122l->first = file;
 200
 201         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 202             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 203                 iface = usb_ifnum_to_if(us122l->dev, 0);
 204                 usb_autopm_get_interface(iface);
 205         }
 206         iface = usb_ifnum_to_if(us122l->dev, 1);
 207         usb_autopm_get_interface(iface);
 208         return 0;
 209 }
 210
 211 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
 212 {
 213         struct us122l   *us122l = hw->private_data;
 214         struct usb_interface *iface;
 215         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 216
 217         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 218             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 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, "/proc/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->dev->descriptor.idProduct == USB_ID_US144 ||
 487             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 488                 err = usb_set_interface(us122l->dev, 0, 1);
 489                 if (err) {
 490                         snd_printk(KERN_ERR "usb_set_interface error \n");
 491                         return false;
 492                 }
 493         }
 494         err = usb_set_interface(us122l->dev, 1, 1);
 495         if (err) {
 496                 snd_printk(KERN_ERR "usb_set_interface error \n");
 497                 return false;
 498         }
 499
 500         pt_info_set(us122l->dev, 0x11);
 501         pt_info_set(us122l->dev, 0x10);
 502
 503         if (!us122l_start(us122l, 44100, 256))
 504                 return false;
 505
 506         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 507             us122l->dev->descriptor.idProduct == USB_ID_US144MKII)
 508                 err = us144_create_usbmidi(card);
 509         else
 510                 err = us122l_create_usbmidi(card);
 511         if (err < 0) {
 512                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 513                 us122l_stop(us122l);
 514                 return false;
 515         }
 516         err = usb_stream_hwdep_new(card);
 517         if (err < 0) {
 518 /* release the midi resources */
 519                 struct list_head *p;
 520                 list_for_each(p, &us122l->midi_list)
 521                         snd_usbmidi_disconnect(p);
 522
 523                 us122l_stop(us122l);
 524                 return false;
 525         }
 526         return true;
 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 {
 541         int             dev;
 542         struct snd_card *card;
 543         int err;
 544
 545         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 546                 if (enable[dev] && !snd_us122l_card_used[dev])
 547                         break;
 548         if (dev >= SNDRV_CARDS)
 549                 return -ENODEV;
 550         err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
 551                            sizeof(struct us122l), &card);
 552         if (err < 0)
 553                 return err;
 554         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 555         card->private_free = snd_us122l_free;
 556         US122L(card)->dev = device;
 557         mutex_init(&US122L(card)->mutex);
 558         init_waitqueue_head(&US122L(card)->sk.sleep);
 559         INIT_LIST_HEAD(&US122L(card)->midi_list);
 560         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 561         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 562         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 563                 card->shortname,
 564                 le16_to_cpu(device->descriptor.idVendor),
 565                 le16_to_cpu(device->descriptor.idProduct),
 566                 0,
 567                 US122L(card)->dev->bus->busnum,
 568                 US122L(card)->dev->devnum
 569                 );
 570         *cardp = card;
 571         return 0;
 572 }
 573
 574 static int us122l_usb_probe(struct usb_interface *intf,
 575                             const struct usb_device_id *device_id,
 576                             struct snd_card **cardp)
 577 {
 578         struct usb_device *device = interface_to_usbdev(intf);
 579         struct snd_card *card;
 580         int err;
 581
 582         err = usx2y_create_card(device, intf, &card);
 583         if (err < 0)
 584                 return err;
 585
 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);