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