sound/usb/usx2y/us122l.c

   1 /*
   2  * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2 of the License, or (at your
   7  * option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #include <linux/slab.h>
  20 #include <linux/usb.h>
  21 #include <linux/usb/audio.h>
  22 #include <linux/module.h>
  23 #include <sound/core.h>
  24 #include <sound/hwdep.h>
  25 #include <sound/pcm.h>
  26 #include <sound/initval.h>
  27 #define MODNAME "US122L"
  28 #include "usb_stream.c"
  29 #include "../usbaudio.h"
  30 #include "../midi.h"
  31 #include "us122l.h"
  32
  33 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
  34 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
  35 MODULE_LICENSE("GPL");
  36
  37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-max */
  38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* Id for this card */
  39                                                         /* Enable this card */
  40 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  41
  42 module_param_array(index, int, NULL, 0444);
  43 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
  44 module_param_array(id, charp, NULL, 0444);
  45 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
  46 module_param_array(enable, bool, NULL, 0444);
  47 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
  48
  49 /* driver_info flags */
  50 #define US122L_FLAG_US144       BIT(0)
  51
  52 static int snd_us122l_card_used[SNDRV_CARDS];
  53
  54 static int us122l_create_usbmidi(struct snd_card *card)
  55 {
  56         static struct snd_usb_midi_endpoint_info quirk_data = {
  57                 .out_ep = 4,
  58                 .in_ep = 3,
  59                 .out_cables =   0x001,
  60                 .in_cables =    0x001
  61         };
  62         static struct snd_usb_audio_quirk quirk = {
  63                 .vendor_name =  "US122L",
  64                 .product_name = NAME_ALLCAPS,
  65                 .ifnum =        1,
  66                 .type = QUIRK_MIDI_US122L,
  67                 .data = &quirk_data
  68         };
  69         struct usb_device *dev = US122L(card)->dev;
  70         struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
  71
  72         return snd_usbmidi_create(card, iface,
  73                                   &US122L(card)->midi_list, &quirk);
  74 }
  75
  76 static int us144_create_usbmidi(struct snd_card *card)
  77 {
  78         static struct snd_usb_midi_endpoint_info quirk_data = {
  79                 .out_ep = 4,
  80                 .in_ep = 3,
  81                 .out_cables =   0x001,
  82                 .in_cables =    0x001
  83         };
  84         static struct snd_usb_audio_quirk quirk = {
  85                 .vendor_name =  "US144",
  86                 .product_name = NAME_ALLCAPS,
  87                 .ifnum =        0,
  88                 .type = QUIRK_MIDI_US122L,
  89                 .data = &quirk_data
  90         };
  91         struct usb_device *dev = US122L(card)->dev;
  92         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
  93
  94         return snd_usbmidi_create(card, iface,
  95                                   &US122L(card)->midi_list, &quirk);
  96 }
  97
  98 /*
  99  * Wrapper for usb_control_msg().
 100  * Allocates a temp buffer to prevent dmaing from/to the stack.
 101  */
 102 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
 103                           __u8 request, __u8 requesttype,
 104                           __u16 value, __u16 index, void *data,
 105                           __u16 size, int timeout)
 106 {
 107         int err;
 108         void *buf = NULL;
 109
 110         if (size > 0) {
 111                 buf = kmemdup(data, size, GFP_KERNEL);
 112                 if (!buf)
 113                         return -ENOMEM;
 114         }
 115         err = usb_control_msg(dev, pipe, request, requesttype,
 116                               value, index, buf, size, timeout);
 117         if (size > 0) {
 118                 memcpy(data, buf, size);
 119                 kfree(buf);
 120         }
 121         return err;
 122 }
 123
 124 static void pt_info_set(struct usb_device *dev, u8 v)
 125 {
 126         int ret;
 127
 128         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 129                               'I',
 130                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 131                               v, 0, NULL, 0, 1000);
 132         snd_printdd(KERN_DEBUG "%i\n", ret);
 133 }
 134
 135 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
 136 {
 137         struct us122l *us122l = area->vm_private_data;
 138         atomic_inc(&us122l->mmap_count);
 139         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 140 }
 141
 142 static vm_fault_t usb_stream_hwdep_vm_fault(struct vm_fault *vmf)
 143 {
 144         unsigned long offset;
 145         struct page *page;
 146         void *vaddr;
 147         struct us122l *us122l = vmf->vma->vm_private_data;
 148         struct usb_stream *s;
 149
 150         mutex_lock(&us122l->mutex);
 151         s = us122l->sk.s;
 152         if (!s)
 153                 goto unlock;
 154
 155         offset = vmf->pgoff << PAGE_SHIFT;
 156         if (offset < PAGE_ALIGN(s->read_size))
 157                 vaddr = (char *)s + offset;
 158         else {
 159                 offset -= PAGE_ALIGN(s->read_size);
 160                 if (offset >= PAGE_ALIGN(s->write_size))
 161                         goto unlock;
 162
 163                 vaddr = us122l->sk.write_page + offset;
 164         }
 165         page = virt_to_page(vaddr);
 166
 167         get_page(page);
 168         mutex_unlock(&us122l->mutex);
 169
 170         vmf->page = page;
 171
 172         return 0;
 173 unlock:
 174         mutex_unlock(&us122l->mutex);
 175         return VM_FAULT_SIGBUS;
 176 }
 177
 178 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
 179 {
 180         struct us122l *us122l = area->vm_private_data;
 181         atomic_dec(&us122l->mmap_count);
 182         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
 183 }
 184
 185 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
 186         .open = usb_stream_hwdep_vm_open,
 187         .fault = usb_stream_hwdep_vm_fault,
 188         .close = usb_stream_hwdep_vm_close,
 189 };
 190
 191
 192 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
 193 {
 194         struct us122l   *us122l = hw->private_data;
 195         struct usb_interface *iface;
 196         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 197         if (hw->used >= 2)
 198                 return -EBUSY;
 199
 200         if (!us122l->first)
 201                 us122l->first = file;
 202
 203         if (us122l->is_us144) {
 204                 iface = usb_ifnum_to_if(us122l->dev, 0);
 205                 usb_autopm_get_interface(iface);
 206         }
 207         iface = usb_ifnum_to_if(us122l->dev, 1);
 208         usb_autopm_get_interface(iface);
 209         return 0;
 210 }
 211
 212 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
 213 {
 214         struct us122l   *us122l = hw->private_data;
 215         struct usb_interface *iface;
 216         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
 217
 218         if (us122l->is_us144) {
 219                 iface = usb_ifnum_to_if(us122l->dev, 0);
 220                 usb_autopm_put_interface(iface);
 221         }
 222         iface = usb_ifnum_to_if(us122l->dev, 1);
 223         usb_autopm_put_interface(iface);
 224         if (us122l->first == file)
 225                 us122l->first = NULL;
 226         mutex_lock(&us122l->mutex);
 227         if (us122l->master == file)
 228                 us122l->master = us122l->slave;
 229
 230         us122l->slave = NULL;
 231         mutex_unlock(&us122l->mutex);
 232         return 0;
 233 }
 234
 235 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
 236                                  struct file *filp, struct vm_area_struct *area)
 237 {
 238         unsigned long   size = area->vm_end - area->vm_start;
 239         struct us122l   *us122l = hw->private_data;
 240         unsigned long offset;
 241         struct usb_stream *s;
 242         int err = 0;
 243         bool read;
 244
 245         offset = area->vm_pgoff << PAGE_SHIFT;
 246         mutex_lock(&us122l->mutex);
 247         s = us122l->sk.s;
 248         read = offset < s->read_size;
 249         if (read && area->vm_flags & VM_WRITE) {
 250                 err = -EPERM;
 251                 goto out;
 252         }
 253         snd_printdd(KERN_DEBUG "%lu %u\n", size,
 254                     read ? s->read_size : s->write_size);
 255         /* if userspace tries to mmap beyond end of our buffer, fail */
 256         if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
 257                 snd_printk(KERN_WARNING "%lu > %u\n", size,
 258                            read ? s->read_size : s->write_size);
 259                 err = -EINVAL;
 260                 goto out;
 261         }
 262
 263         area->vm_ops = &usb_stream_hwdep_vm_ops;
 264         area->vm_flags |= VM_DONTDUMP;
 265         if (!read)
 266                 area->vm_flags |= VM_DONTEXPAND;
 267         area->vm_private_data = us122l;
 268         atomic_inc(&us122l->mmap_count);
 269 out:
 270         mutex_unlock(&us122l->mutex);
 271         return err;
 272 }
 273
 274 static __poll_t 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         __poll_t        mask;
 280
 281         poll_wait(file, &us122l->sk.sleep, wait);
 282
 283         mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR;
 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 = EPOLLIN | EPOLLOUT | EPOLLWRNORM;
 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         if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg)))
 392                 return -EFAULT;
 393
 394         if (cfg.version != USB_STREAM_INTERFACE_VERSION)
 395                 return -ENXIO;
 396
 397         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
 398         if ((cfg.sample_rate != 44100 && cfg.sample_rate != 48000  &&
 399              (!high_speed ||
 400               (cfg.sample_rate != 88200 && cfg.sample_rate != 96000))) ||
 401             cfg.frame_size != 6 ||
 402             cfg.period_frames > 0x3000)
 403                 return -EINVAL;
 404
 405         switch (cfg.sample_rate) {
 406         case 44100:
 407                 min_period_frames = 48;
 408                 break;
 409         case 48000:
 410                 min_period_frames = 52;
 411                 break;
 412         default:
 413                 min_period_frames = 104;
 414                 break;
 415         }
 416         if (!high_speed)
 417                 min_period_frames <<= 1;
 418         if (cfg.period_frames < min_period_frames)
 419                 return -EINVAL;
 420
 421         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
 422
 423         mutex_lock(&us122l->mutex);
 424         s = us122l->sk.s;
 425         if (!us122l->master)
 426                 us122l->master = file;
 427         else if (us122l->master != file) {
 428                 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) {
 429                         err = -EIO;
 430                         goto unlock;
 431                 }
 432                 us122l->slave = file;
 433         }
 434         if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) ||
 435             s->state == usb_stream_xrun) {
 436                 us122l_stop(us122l);
 437                 if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames))
 438                         err = -EIO;
 439                 else
 440                         err = 1;
 441         }
 442 unlock:
 443         mutex_unlock(&us122l->mutex);
 444         wake_up_all(&us122l->sk.sleep);
 445         return err;
 446 }
 447
 448 #define SND_USB_STREAM_ID "USB STREAM"
 449 static int usb_stream_hwdep_new(struct snd_card *card)
 450 {
 451         int err;
 452         struct snd_hwdep *hw;
 453         struct usb_device *dev = US122L(card)->dev;
 454
 455         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
 456         if (err < 0)
 457                 return err;
 458
 459         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
 460         hw->private_data = US122L(card);
 461         hw->ops.open = usb_stream_hwdep_open;
 462         hw->ops.release = usb_stream_hwdep_release;
 463         hw->ops.ioctl = usb_stream_hwdep_ioctl;
 464         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
 465         hw->ops.mmap = usb_stream_hwdep_mmap;
 466         hw->ops.poll = usb_stream_hwdep_poll;
 467
 468         sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm",
 469                 dev->bus->busnum, dev->devnum);
 470         return 0;
 471 }
 472
 473
 474 static bool us122l_create_card(struct snd_card *card)
 475 {
 476         int err;
 477         struct us122l *us122l = US122L(card);
 478
 479         if (us122l->is_us144) {
 480                 err = usb_set_interface(us122l->dev, 0, 1);
 481                 if (err) {
 482                         snd_printk(KERN_ERR "usb_set_interface error \n");
 483                         return false;
 484                 }
 485         }
 486         err = usb_set_interface(us122l->dev, 1, 1);
 487         if (err) {
 488                 snd_printk(KERN_ERR "usb_set_interface error \n");
 489                 return false;
 490         }
 491
 492         pt_info_set(us122l->dev, 0x11);
 493         pt_info_set(us122l->dev, 0x10);
 494
 495         if (!us122l_start(us122l, 44100, 256))
 496                 return false;
 497
 498         if (us122l->is_us144)
 499                 err = us144_create_usbmidi(card);
 500         else
 501                 err = us122l_create_usbmidi(card);
 502         if (err < 0) {
 503                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
 504                 goto stop;
 505         }
 506         err = usb_stream_hwdep_new(card);
 507         if (err < 0) {
 508 /* release the midi resources */
 509                 struct list_head *p;
 510                 list_for_each(p, &us122l->midi_list)
 511                         snd_usbmidi_disconnect(p);
 512
 513                 goto stop;
 514         }
 515         return true;
 516
 517 stop:
 518         us122l_stop(us122l);
 519         return false;
 520 }
 521
 522 static void snd_us122l_free(struct snd_card *card)
 523 {
 524         struct us122l   *us122l = US122L(card);
 525         int             index = us122l->card_index;
 526         if (index >= 0  &&  index < SNDRV_CARDS)
 527                 snd_us122l_card_used[index] = 0;
 528 }
 529
 530 static int usx2y_create_card(struct usb_device *device,
 531                              struct usb_interface *intf,
 532                              struct snd_card **cardp,
 533                              unsigned long flags)
 534 {
 535         int             dev;
 536         struct snd_card *card;
 537         int err;
 538
 539         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 540                 if (enable[dev] && !snd_us122l_card_used[dev])
 541                         break;
 542         if (dev >= SNDRV_CARDS)
 543                 return -ENODEV;
 544         err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
 545                            sizeof(struct us122l), &card);
 546         if (err < 0)
 547                 return err;
 548         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
 549         card->private_free = snd_us122l_free;
 550         US122L(card)->dev = device;
 551         mutex_init(&US122L(card)->mutex);
 552         init_waitqueue_head(&US122L(card)->sk.sleep);
 553         US122L(card)->is_us144 = flags & US122L_FLAG_US144;
 554         INIT_LIST_HEAD(&US122L(card)->midi_list);
 555         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 556         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 557         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 558                 card->shortname,
 559                 le16_to_cpu(device->descriptor.idVendor),
 560                 le16_to_cpu(device->descriptor.idProduct),
 561                 0,
 562                 US122L(card)->dev->bus->busnum,
 563                 US122L(card)->dev->devnum
 564                 );
 565         *cardp = card;
 566         return 0;
 567 }
 568
 569 static int us122l_usb_probe(struct usb_interface *intf,
 570                             const struct usb_device_id *device_id,
 571                             struct snd_card **cardp)
 572 {
 573         struct usb_device *device = interface_to_usbdev(intf);
 574         struct snd_card *card;
 575         int err;
 576
 577         err = usx2y_create_card(device, intf, &card, device_id->driver_info);
 578         if (err < 0)
 579                 return err;
 580
 581         if (!us122l_create_card(card)) {
 582                 snd_card_free(card);
 583                 return -EINVAL;
 584         }
 585
 586         err = snd_card_register(card);
 587         if (err < 0) {
 588                 snd_card_free(card);
 589                 return err;
 590         }
 591
 592         usb_get_intf(usb_ifnum_to_if(device, 0));
 593         usb_get_dev(device);
 594         *cardp = card;
 595         return 0;
 596 }
 597
 598 static int snd_us122l_probe(struct usb_interface *intf,
 599                             const struct usb_device_id *id)
 600 {
 601         struct usb_device *device = interface_to_usbdev(intf);
 602         struct snd_card *card;
 603         int err;
 604
 605         if (id->driver_info & US122L_FLAG_US144 &&
 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->is_us144) {
 701                 err = usb_set_interface(us122l->dev, 0, 1);
 702                 if (err) {
 703                         snd_printk(KERN_ERR "usb_set_interface error \n");
 704                         goto unlock;
 705                 }
 706         }
 707         err = usb_set_interface(us122l->dev, 1, 1);
 708         if (err) {
 709                 snd_printk(KERN_ERR "usb_set_interface error \n");
 710                 goto unlock;
 711         }
 712
 713         pt_info_set(us122l->dev, 0x11);
 714         pt_info_set(us122l->dev, 0x10);
 715
 716         err = us122l_set_sample_rate(us122l->dev,
 717                                      us122l->sk.s->cfg.sample_rate);
 718         if (err < 0) {
 719                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
 720                 goto unlock;
 721         }
 722         err = usb_stream_start(&us122l->sk);
 723         if (err)
 724                 goto unlock;
 725
 726         list_for_each(p, &us122l->midi_list)
 727                 snd_usbmidi_input_start(p);
 728 unlock:
 729         mutex_unlock(&us122l->mutex);
 730         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 731         return err;
 732 }
 733
 734 static const struct usb_device_id snd_us122l_usb_id_table[] = {
 735         {
 736                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 737                 .idVendor =     0x0644,
 738                 .idProduct =    USB_ID_US122L
 739         },
 740         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
 741                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 742                 .idVendor =     0x0644,
 743                 .idProduct =    USB_ID_US144,
 744                 .driver_info =  US122L_FLAG_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                 .driver_info =  US122L_FLAG_US144
 756         },
 757         { /* terminator */ }
 758 };
 759
 760 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
 761 static struct usb_driver snd_us122l_usb_driver = {
 762         .name =         "snd-usb-us122l",
 763         .probe =        snd_us122l_probe,
 764         .disconnect =   snd_us122l_disconnect,
 765         .suspend =      snd_us122l_suspend,
 766         .resume =       snd_us122l_resume,
 767         .reset_resume = snd_us122l_resume,
 768         .id_table =     snd_us122l_usb_id_table,
 769         .supports_autosuspend = 1
 770 };
 771
 772 module_usb_driver(snd_us122l_usb_driver);