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 <sound/core.h>
  20 #include <sound/hwdep.h>
  21 #include <sound/pcm.h>
  22 #include <sound/initval.h>
  23 #define MODNAME "US122L"
  24 #include "usb_stream.c"
  25 #include "../usbaudio.h"
  26 #include "us122l.h"
  27
  28 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
  29 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
  30 MODULE_LICENSE("GPL");
  31
  32 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-max */
  33 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* Id for this card */
  34                                                         /* Enable this card */
  35 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  36
  37 module_param_array(index, int, NULL, 0444);
  38 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
  39 module_param_array(id, charp, NULL, 0444);
  40 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
  41 module_param_array(enable, bool, NULL, 0444);
  42 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
  43
  44 static int snd_us122l_card_used[SNDRV_CARDS];
  45
  46
  47 static int us122l_create_usbmidi(struct snd_card *card)
  48 {
  49         static struct snd_usb_midi_endpoint_info quirk_data = {
  50                 .out_ep = 4,
  51                 .in_ep = 3,
  52                 .out_cables =   0x001,
  53                 .in_cables =    0x001
  54         };
  55         static struct snd_usb_audio_quirk quirk = {
  56                 .vendor_name =  "US122L",
  57                 .product_name = NAME_ALLCAPS,
  58                 .ifnum =        1,
  59                 .type = QUIRK_MIDI_US122L,
  60                 .data = &quirk_data
  61         };
  62         struct usb_device *dev = US122L(card)->dev;
  63         struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
  64
  65         return snd_usbmidi_create(card, iface,
  66                                   &US122L(card)->midi_list, &quirk);
  67 }
  68
  69 static int us144_create_usbmidi(struct snd_card *card)
  70 {
  71         static struct snd_usb_midi_endpoint_info quirk_data = {
  72                 .out_ep = 4,
  73                 .in_ep = 3,
  74                 .out_cables =   0x001,
  75                 .in_cables =    0x001
  76         };
  77         static struct snd_usb_audio_quirk quirk = {
  78                 .vendor_name =  "US144",
  79                 .product_name = NAME_ALLCAPS,
  80                 .ifnum =        0,
  81                 .type = QUIRK_MIDI_US122L,
  82                 .data = &quirk_data
  83         };
  84         struct usb_device *dev = US122L(card)->dev;
  85         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
  86
  87         return snd_usbmidi_create(card, iface,
  88                                   &US122L(card)->midi_list, &quirk);
  89 }
  90
  91 /*
  92  * Wrapper for usb_control_msg().
  93  * Allocates a temp buffer to prevent dmaing from/to the stack.
  94  */
  95 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
  96                           __u8 request, __u8 requesttype,
  97                           __u16 value, __u16 index, void *data,
  98                           __u16 size, int timeout)
  99 {
 100         int err;
 101         void *buf = NULL;
 102
 103         if (size > 0) {
 104                 buf = kmemdup(data, size, GFP_KERNEL);
 105                 if (!buf)
 106                         return -ENOMEM;
 107         }
 108         err = usb_control_msg(dev, pipe, request, requesttype,
 109                               value, index, buf, size, timeout);
 110         if (size > 0) {
 111                 memcpy(data, buf, size);
 112                 kfree(buf);
 113         }
 114         return err;
 115 }
 116
 117 static void pt_info_set(struct usb_device *dev, u8 v)
 118 {
 119         int ret;
 120
 121         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 122                               'I',
 123                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 124                               v, 0, NULL, 0, 1000);
 125         snd_printdd(KERN_DEBUG "%i\n", ret);
 126 }
 127
 128 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
 129 {
 130         struct us122l *us122l = area->vm_private_data;
 131         atomic_inc(&us122l->mmap_count);
 132         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 133 }
 134
 135 static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
 136                                      struct vm_fault *vmf)
 137 {
 138         unsigned long offset;
 139         struct page *page;
 140         void *vaddr;
 141         struct us122l *us122l = area->vm_private_data;
 142         struct usb_stream *s;
 143
 144         mutex_lock(&us122l->mutex);
 145         s = us122l->sk.s;
 146         if (!s)
 147                 goto unlock;
 148
 149         offset = vmf->pgoff << PAGE_SHIFT;
 150         if (offset < PAGE_ALIGN(s->read_size))
 151                 vaddr = (char *)s + offset;
 152         else {
 153                 offset -= PAGE_ALIGN(s->read_size);
 154                 if (offset >= PAGE_ALIGN(s->write_size))
 155                         goto unlock;
 156
 157                 vaddr = us122l->sk.write_page + offset;
 158         }
 159         page = virt_to_page(vaddr);
 160
 161         get_page(page);
 162         mutex_unlock(&us122l->mutex);
 163
 164         vmf->page = page;
 165
 166         return 0;
 167 unlock:
 168         mutex_unlock(&us122l->mutex);
 169         return VM_FAULT_SIGBUS;
 170 }
 171
 172 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
 173 {
 174         struct us122l *us122l = area->vm_private_data;
 175         atomic_dec(&us122l->mmap_count);
 176         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 177 }
 178
 179 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
 180         .open = usb_stream_hwdep_vm_open,
 181         .fault = usb_stream_hwdep_vm_fault,
 182         .close = usb_stream_hwdep_vm_close,
 183 };
 184
 185
 186 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
 187 {
 188         struct us122l   *us122l = hw->private_data;
 189         struct usb_interface *iface;
 190         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 191         if (hw->used >= 2)
 192                 return -EBUSY;
 193
 194         if (!us122l->first)
 195                 us122l->first = file;
 196
 197         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 198             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 199                 iface = usb_ifnum_to_if(us122l->dev, 0);
 200                 usb_autopm_get_interface(iface);
 201         }
 202         iface = usb_ifnum_to_if(us122l->dev, 1);
 203         usb_autopm_get_interface(iface);
 204         return 0;
 205 }
 206
 207 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
 208 {
 209         struct us122l   *us122l = hw->private_data;
 210         struct usb_interface *iface;
 211         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 212
 213         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 214             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 215                 iface = usb_ifnum_to_if(us122l->dev, 0);
 216                 usb_autopm_put_interface(iface);
 217         }
 218         iface = usb_ifnum_to_if(us122l->dev, 1);
 219         usb_autopm_put_interface(iface);
 220         if (us122l->first == file)
 221                 us122l->first = NULL;
 222         mutex_lock(&us122l->mutex);
 223         if (us122l->master == file)
 224                 us122l->master = us122l->slave;
 225
 226         us122l->slave = NULL;
 227         mutex_unlock(&us122l->mutex);
 228         return 0;
 229 }
 230
 231 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
 232                                  struct file *filp, struct vm_area_struct *area)
 233 {
 234         unsigned long   size = area->vm_end - area->vm_start;
 235         struct us122l   *us122l = hw->private_data;
 236         unsigned long offset;
 237         struct usb_stream *s;
 238         int err = 0;
 239         bool read;
 240
 241         offset = area->vm_pgoff << PAGE_SHIFT;
 242         mutex_lock(&us122l->mutex);
 243         s = us122l->sk.s;
 244         read = offset < s->read_size;
 245         if (read && area->vm_flags & VM_WRITE) {
 246                 err = -EPERM;
 247                 goto out;
 248         }
 249         snd_printdd(KERN_DEBUG "%lu %u\n", size,
 250                     read ? s->read_size : s->write_size);
 251         /* if userspace tries to mmap beyond end of our buffer, fail */
 252         if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
 253                 snd_printk(KERN_WARNING "%lu > %u\n", size,
 254                            read ? s->read_size : s->write_size);
 255                 err = -EINVAL;
 256                 goto out;
 257         }
 258
 259         area->vm_ops = &usb_stream_hwdep_vm_ops;
 260         area->vm_flags |= VM_RESERVED;
 261         area->vm_private_data = us122l;
 262         atomic_inc(&us122l->mmap_count);
 263 out:
 264         mutex_unlock(&us122l->mutex);
 265         return err;
 266 }
 267
 268 static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
 269                                           struct file *file, poll_table *wait)
 270 {
 271         struct us122l   *us122l = hw->private_data;
 272         struct usb_stream *s = us122l->sk.s;
 273         unsigned        *polled;
 274         unsigned int    mask;
 275
 276         poll_wait(file, &us122l->sk.sleep, wait);
 277
 278         switch (s->state) {
 279         case usb_stream_ready:
 280                 if (us122l->first == file)
 281                         polled = &s->periods_polled;
 282                 else
 283                         polled = &us122l->second_periods_polled;
 284                 if (*polled != s->periods_done) {
 285                         *polled = s->periods_done;
 286                         mask = POLLIN | POLLOUT | POLLWRNORM;
 287                         break;
 288                 }
 289                 /* Fall through */
 290                 mask = 0;
 291                 break;
 292         default:
 293                 mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
 294                 break;
 295         }
 296         return mask;
 297 }
 298
 299 static void us122l_stop(struct us122l *us122l)
 300 {
 301         struct list_head *p;
 302         list_for_each(p, &us122l->midi_list)
 303                 snd_usbmidi_input_stop(p);
 304
 305         usb_stream_stop(&us122l->sk);
 306         usb_stream_free(&us122l->sk);
 307 }
 308
 309 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
 310 {
 311         unsigned int ep = 0x81;
 312         unsigned char data[3];
 313         int err;
 314
 315         data[0] = rate;
 316         data[1] = rate >> 8;
 317         data[2] = rate >> 16;
 318         err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
 319                              USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
 320                              SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000);
 321         if (err < 0)
 322                 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
 323                            dev->devnum, rate, ep);
 324         return err;
 325 }
 326
 327 static bool us122l_start(struct us122l *us122l,
 328                          unsigned rate, unsigned period_frames)
 329 {
 330         struct list_head *p;
 331         int err;
 332         unsigned use_packsize = 0;
 333         bool success = false;
 334
 335         if (us122l->dev->speed == USB_SPEED_HIGH) {
 336                 /* The us-122l's descriptor defaults to iso max_packsize 78,
 337                    which isn't needed for samplerates <= 48000.
 338                    Lets save some memory:
 339                 */
 340                 switch (rate) {
 341                 case 44100:
 342                         use_packsize = 36;
 343                         break;
 344                 case 48000:
 345                         use_packsize = 42;
 346                         break;
 347                 case 88200:
 348                         use_packsize = 72;
 349                         break;
 350                 }
 351         }
 352         if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
 353                             rate, use_packsize, period_frames, 6))
 354                 goto out;
 355
 356         err = us122l_set_sample_rate(us122l->dev, rate);
 357         if (err < 0) {
 358                 us122l_stop(us122l);
 359                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 360                 goto out;
 361         }
 362         err = usb_stream_start(&us122l->sk);
 363         if (err < 0) {
 364                 us122l_stop(us122l);
 365                 snd_printk(KERN_ERR "us122l_start error %i \n", err);
 366                 goto out;
 367         }
 368         list_for_each(p, &us122l->midi_list)
 369                 snd_usbmidi_input_start(p);
 370         success = true;
 371 out:
 372         return success;
 373 }
 374
 375 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
 376                                   unsigned cmd, unsigned long arg)
 377 {
 378         struct usb_stream_config *cfg;
 379         struct us122l *us122l = hw->private_data;
 380         unsigned min_period_frames;
 381         int err = 0;
 382         bool high_speed;
 383
 384         if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
 385                 return -ENOTTY;
 386
 387         cfg = memdup_user((void *)arg, sizeof(*cfg));
 388         if (IS_ERR(cfg))
 389                 return PTR_ERR(cfg);
 390
 391         if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
 392                 err = -ENXIO;
 393                 goto free;
 394         }
 395         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
 396         if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
 397              (!high_speed ||
 398               (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
 399             cfg->frame_size != 6 ||
 400             cfg->period_frames > 0x3000) {
 401                 err = -EINVAL;
 402                 goto free;
 403         }
 404         switch (cfg->sample_rate) {
 405         case 44100:
 406                 min_period_frames = 48;
 407                 break;
 408         case 48000:
 409                 min_period_frames = 52;
 410                 break;
 411         default:
 412                 min_period_frames = 104;
 413                 break;
 414         }
 415         if (!high_speed)
 416                 min_period_frames <<= 1;
 417         if (cfg->period_frames < min_period_frames) {
 418                 err = -EINVAL;
 419                 goto free;
 420         }
 421
 422         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
 423
 424         mutex_lock(&us122l->mutex);
 425         if (!us122l->master)
 426                 us122l->master = file;
 427         else if (us122l->master != file) {
 428                 if (memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg))) {
 429                         err = -EIO;
 430                         goto unlock;
 431                 }
 432                 us122l->slave = file;
 433         }
 434         if (!us122l->sk.s ||
 435             memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg)) ||
 436             us122l->sk.s->state == usb_stream_xrun) {
 437                 us122l_stop(us122l);
 438                 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
 439                         err = -EIO;
 440                 else
 441                         err = 1;
 442         }
 443 unlock:
 444         mutex_unlock(&us122l->mutex);
 445 free:
 446         kfree(cfg);
 447         return err;
 448 }
 449
 450 #define SND_USB_STREAM_ID "USB STREAM"
 451 static int usb_stream_hwdep_new(struct snd_card *card)
 452 {
 453         int err;
 454         struct snd_hwdep *hw;
 455         struct usb_device *dev = US122L(card)->dev;
 456
 457         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
 458         if (err < 0)
 459                 return err;
 460
 461         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
 462         hw->private_data = US122L(card);
 463         hw->ops.open = usb_stream_hwdep_open;
 464         hw->ops.release = usb_stream_hwdep_release;
 465         hw->ops.ioctl = usb_stream_hwdep_ioctl;
 466         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
 467         hw->ops.mmap = usb_stream_hwdep_mmap;
 468         hw->ops.poll = usb_stream_hwdep_poll;
 469
 470         sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm",
 471                 dev->bus->busnum, dev->devnum);
 472         return 0;
 473 }
 474
 475
 476 static bool us122l_create_card(struct snd_card *card)
 477 {
 478         int err;
 479         struct us122l *us122l = US122L(card);
 480
 481         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 482             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 483                 err = usb_set_interface(us122l->dev, 0, 1);
 484                 if (err) {
 485                         snd_printk(KERN_ERR "usb_set_interface error \n");
 486                         return false;
 487                 }
 488         }
 489         err = usb_set_interface(us122l->dev, 1, 1);
 490         if (err) {
 491                 snd_printk(KERN_ERR "usb_set_interface error \n");
 492                 return false;
 493         }
 494
 495         pt_info_set(us122l->dev, 0x11);
 496         pt_info_set(us122l->dev, 0x10);
 497
 498         if (!us122l_start(us122l, 44100, 256))
 499                 return false;
 500
 501         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 502             us122l->dev->descriptor.idProduct == USB_ID_US144MKII)
 503                 err = us144_create_usbmidi(card);
 504         else
 505                 err = us122l_create_usbmidi(card);
 506         if (err < 0) {
 507                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 508                 us122l_stop(us122l);
 509                 return false;
 510         }
 511         err = usb_stream_hwdep_new(card);
 512         if (err < 0) {
 513 /* release the midi resources */
 514                 struct list_head *p;
 515                 list_for_each(p, &us122l->midi_list)
 516                         snd_usbmidi_disconnect(p);
 517
 518                 us122l_stop(us122l);
 519                 return false;
 520         }
 521         return true;
 522 }
 523
 524 static void snd_us122l_free(struct snd_card *card)
 525 {
 526         struct us122l   *us122l = US122L(card);
 527         int             index = us122l->card_index;
 528         if (index >= 0  &&  index < SNDRV_CARDS)
 529                 snd_us122l_card_used[index] = 0;
 530 }
 531
 532 static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
 533 {
 534         int             dev;
 535         struct snd_card *card;
 536         int err;
 537
 538         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 539                 if (enable[dev] && !snd_us122l_card_used[dev])
 540                         break;
 541         if (dev >= SNDRV_CARDS)
 542                 return -ENODEV;
 543         err = snd_card_create(index[dev], id[dev], THIS_MODULE,
 544                               sizeof(struct us122l), &card);
 545         if (err < 0)
 546                 return err;
 547         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 548         card->private_free = snd_us122l_free;
 549         US122L(card)->dev = device;
 550         mutex_init(&US122L(card)->mutex);
 551         init_waitqueue_head(&US122L(card)->sk.sleep);
 552         INIT_LIST_HEAD(&US122L(card)->midi_list);
 553         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 554         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 555         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 556                 card->shortname,
 557                 le16_to_cpu(device->descriptor.idVendor),
 558                 le16_to_cpu(device->descriptor.idProduct),
 559                 0,
 560                 US122L(card)->dev->bus->busnum,
 561                 US122L(card)->dev->devnum
 562                 );
 563         *cardp = card;
 564         return 0;
 565 }
 566
 567 static int us122l_usb_probe(struct usb_interface *intf,
 568                             const struct usb_device_id *device_id,
 569                             struct snd_card **cardp)
 570 {
 571         struct usb_device *device = interface_to_usbdev(intf);
 572         struct snd_card *card;
 573         int err;
 574
 575         err = usx2y_create_card(device, &card);
 576         if (err < 0)
 577                 return err;
 578
 579         snd_card_set_dev(card, &intf->dev);
 580         if (!us122l_create_card(card)) {
 581                 snd_card_free(card);
 582                 return -EINVAL;
 583         }
 584
 585         err = snd_card_register(card);
 586         if (err < 0) {
 587                 snd_card_free(card);
 588                 return err;
 589         }
 590
 591         usb_get_intf(usb_ifnum_to_if(device, 0));
 592         usb_get_dev(device);
 593         *cardp = card;
 594         return 0;
 595 }
 596
 597 static int snd_us122l_probe(struct usb_interface *intf,
 598                             const struct usb_device_id *id)
 599 {
 600         struct usb_device *device = interface_to_usbdev(intf);
 601         struct snd_card *card;
 602         int err;
 603
 604         if ((device->descriptor.idProduct == USB_ID_US144 ||
 605              device->descriptor.idProduct == USB_ID_US144MKII)
 606                 && device->speed == USB_SPEED_HIGH) {
 607                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
 608                 return -ENODEV;
 609         }
 610
 611         snd_printdd(KERN_DEBUG"%p:%i\n",
 612                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
 613         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
 614                 return 0;
 615
 616         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
 617         if (err < 0) {
 618                 usb_put_intf(intf);
 619                 return err;
 620         }
 621
 622         usb_set_intfdata(intf, card);
 623         return 0;
 624 }
 625
 626 static void snd_us122l_disconnect(struct usb_interface *intf)
 627 {
 628         struct snd_card *card;
 629         struct us122l *us122l;
 630         struct list_head *p;
 631
 632         card = usb_get_intfdata(intf);
 633         if (!card)
 634                 return;
 635
 636         snd_card_disconnect(card);
 637
 638         us122l = US122L(card);
 639         mutex_lock(&us122l->mutex);
 640         us122l_stop(us122l);
 641         mutex_unlock(&us122l->mutex);
 642
 643 /* release the midi resources */
 644         list_for_each(p, &us122l->midi_list) {
 645                 snd_usbmidi_disconnect(p);
 646         }
 647
 648         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
 649         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
 650         usb_put_dev(us122l->dev);
 651
 652         while (atomic_read(&us122l->mmap_count))
 653                 msleep(500);
 654
 655         snd_card_free(card);
 656 }
 657
 658 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
 659 {
 660         struct snd_card *card;
 661         struct us122l *us122l;
 662         struct list_head *p;
 663
 664         card = usb_get_intfdata(intf);
 665         if (!card)
 666                 return 0;
 667         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 668
 669         us122l = US122L(card);
 670         if (!us122l)
 671                 return 0;
 672
 673         list_for_each(p, &us122l->midi_list)
 674                 snd_usbmidi_input_stop(p);
 675
 676         mutex_lock(&us122l->mutex);
 677         usb_stream_stop(&us122l->sk);
 678         mutex_unlock(&us122l->mutex);
 679
 680         return 0;
 681 }
 682
 683 static int snd_us122l_resume(struct usb_interface *intf)
 684 {
 685         struct snd_card *card;
 686         struct us122l *us122l;
 687         struct list_head *p;
 688         int err;
 689
 690         card = usb_get_intfdata(intf);
 691         if (!card)
 692                 return 0;
 693
 694         us122l = US122L(card);
 695         if (!us122l)
 696                 return 0;
 697
 698         mutex_lock(&us122l->mutex);
 699         /* needed, doesn't restart without: */
 700         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
 701             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
 702                 err = usb_set_interface(us122l->dev, 0, 1);
 703                 if (err) {
 704                         snd_printk(KERN_ERR "usb_set_interface error \n");
 705                         goto unlock;
 706                 }
 707         }
 708         err = usb_set_interface(us122l->dev, 1, 1);
 709         if (err) {
 710                 snd_printk(KERN_ERR "usb_set_interface error \n");
 711                 goto unlock;
 712         }
 713
 714         pt_info_set(us122l->dev, 0x11);
 715         pt_info_set(us122l->dev, 0x10);
 716
 717         err = us122l_set_sample_rate(us122l->dev,
 718                                      us122l->sk.s->cfg.sample_rate);
 719         if (err < 0) {
 720                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 721                 goto unlock;
 722         }
 723         err = usb_stream_start(&us122l->sk);
 724         if (err)
 725                 goto unlock;
 726
 727         list_for_each(p, &us122l->midi_list)
 728                 snd_usbmidi_input_start(p);
 729 unlock:
 730         mutex_unlock(&us122l->mutex);
 731         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 732         return err;
 733 }
 734
 735 static struct usb_device_id snd_us122l_usb_id_table[] = {
 736         {
 737                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 738                 .idVendor =     0x0644,
 739                 .idProduct =    USB_ID_US122L
 740         },
 741         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
 742                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 743                 .idVendor =     0x0644,
 744                 .idProduct =    USB_ID_US144
 745         },
 746         {
 747                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 748                 .idVendor =     0x0644,
 749                 .idProduct =    USB_ID_US122MKII
 750         },
 751         {
 752                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 753                 .idVendor =     0x0644,
 754                 .idProduct =    USB_ID_US144MKII
 755         },
 756         { /* terminator */ }
 757 };
 758
 759 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 760 static struct usb_driver snd_us122l_usb_driver = {
 761         .name =         "snd-usb-us122l",
 762         .probe =        snd_us122l_probe,
 763         .disconnect =   snd_us122l_disconnect,
 764         .suspend =      snd_us122l_suspend,
 765         .resume =       snd_us122l_resume,
 766         .reset_resume = snd_us122l_resume,
 767         .id_table =     snd_us122l_usb_id_table,
 768         .supports_autosuspend = 1
 769 };
 770
 771
 772 static int __init snd_us122l_module_init(void)
 773 {
 774         return usb_register(&snd_us122l_usb_driver);
 775 }
 776
 777 static void __exit snd_us122l_module_exit(void)
 778 {
 779         usb_deregister(&snd_us122l_usb_driver);
 780 }
 781
 782 module_init(snd_us122l_module_init)
 783 module_exit(snd_us122l_module_exit)