sound/usb/quirks.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License, or
   5  *   (at your option) any later version.
   6  *
   7  *   This program is distributed in the hope that it will be useful,
   8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *   GNU General Public License for more details.
  11  *
  12  *   You should have received a copy of the GNU General Public License
  13  *   along with this program; if not, write to the Free Software
  14  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  15  */
  16
  17 #include <linux/init.h>
  18 #include <linux/slab.h>
  19 #include <linux/usb.h>
  20 #include <linux/usb/audio.h>
  21
  22 #include <sound/control.h>
  23 #include <sound/core.h>
  24 #include <sound/info.h>
  25 #include <sound/pcm.h>
  26
  27 #include "usbaudio.h"
  28 #include "card.h"
  29 #include "mixer.h"
  30 #include "mixer_quirks.h"
  31 #include "midi.h"
  32 #include "quirks.h"
  33 #include "helper.h"
  34 #include "endpoint.h"
  35 #include "pcm.h"
  36 #include "clock.h"
  37
  38 /*
  39  * handle the quirks for the contained interfaces
  40  */
  41 static int create_composite_quirk(struct snd_usb_audio *chip,
  42                                   struct usb_interface *iface,
  43                                   struct usb_driver *driver,
  44                                   const struct snd_usb_audio_quirk *quirk)
  45 {
  46         int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
  47         int err;
  48
  49         for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
  50                 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
  51                 if (!iface)
  52                         continue;
  53                 if (quirk->ifnum != probed_ifnum &&
  54                     usb_interface_claimed(iface))
  55                         continue;
  56                 err = snd_usb_create_quirk(chip, iface, driver, quirk);
  57                 if (err < 0)
  58                         return err;
  59                 if (quirk->ifnum != probed_ifnum)
  60                         usb_driver_claim_interface(driver, iface, (void *)-1L);
  61         }
  62         return 0;
  63 }
  64
  65 static int ignore_interface_quirk(struct snd_usb_audio *chip,
  66                                   struct usb_interface *iface,
  67                                   struct usb_driver *driver,
  68                                   const struct snd_usb_audio_quirk *quirk)
  69 {
  70         return 0;
  71 }
  72
  73
  74 /*
  75  * Allow alignment on audio sub-slot (channel samples) rather than
  76  * on audio slots (audio frames)
  77  */
  78 static int create_align_transfer_quirk(struct snd_usb_audio *chip,
  79                                        struct usb_interface *iface,
  80                                        struct usb_driver *driver,
  81                                        const struct snd_usb_audio_quirk *quirk)
  82 {
  83         chip->txfr_quirk = 1;
  84         return 1;       /* Continue with creating streams and mixer */
  85 }
  86
  87 static int create_any_midi_quirk(struct snd_usb_audio *chip,
  88                                  struct usb_interface *intf,
  89                                  struct usb_driver *driver,
  90                                  const struct snd_usb_audio_quirk *quirk)
  91 {
  92         return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
  93 }
  94
  95 /*
  96  * create a stream for an interface with proper descriptors
  97  */
  98 static int create_standard_audio_quirk(struct snd_usb_audio *chip,
  99                                        struct usb_interface *iface,
 100                                        struct usb_driver *driver,
 101                                        const struct snd_usb_audio_quirk *quirk)
 102 {
 103         struct usb_host_interface *alts;
 104         struct usb_interface_descriptor *altsd;
 105         int err;
 106
 107         alts = &iface->altsetting[0];
 108         altsd = get_iface_desc(alts);
 109         err = snd_usb_parse_audio_endpoints(chip, altsd->bInterfaceNumber);
 110         if (err < 0) {
 111                 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
 112                            altsd->bInterfaceNumber, err);
 113                 return err;
 114         }
 115         /* reset the current interface */
 116         usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
 117         return 0;
 118 }
 119
 120 /*
 121  * create a stream for an endpoint/altsetting without proper descriptors
 122  */
 123 static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
 124                                      struct usb_interface *iface,
 125                                      struct usb_driver *driver,
 126                                      const struct snd_usb_audio_quirk *quirk)
 127 {
 128         struct audioformat *fp;
 129         struct usb_host_interface *alts;
 130         int stream, err;
 131         unsigned *rate_table = NULL;
 132
 133         fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
 134         if (! fp) {
 135                 snd_printk(KERN_ERR "cannot memdup\n");
 136                 return -ENOMEM;
 137         }
 138         if (fp->nr_rates > 0) {
 139                 rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
 140                 if (!rate_table) {
 141                         kfree(fp);
 142                         return -ENOMEM;
 143                 }
 144                 memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
 145                 fp->rate_table = rate_table;
 146         }
 147
 148         stream = (fp->endpoint & USB_DIR_IN)
 149                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 150         err = snd_usb_add_audio_endpoint(chip, stream, fp);
 151         if (err < 0) {
 152                 kfree(fp);
 153                 kfree(rate_table);
 154                 return err;
 155         }
 156         if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
 157             fp->altset_idx >= iface->num_altsetting) {
 158                 kfree(fp);
 159                 kfree(rate_table);
 160                 return -EINVAL;
 161         }
 162         alts = &iface->altsetting[fp->altset_idx];
 163         fp->datainterval = snd_usb_parse_datainterval(chip, alts);
 164         fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 165         usb_set_interface(chip->dev, fp->iface, 0);
 166         snd_usb_init_pitch(chip, fp->iface, alts, fp);
 167         snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
 168         return 0;
 169 }
 170
 171 /*
 172  * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
 173  * The only way to detect the sample rate is by looking at wMaxPacketSize.
 174  */
 175 static int create_uaxx_quirk(struct snd_usb_audio *chip,
 176                              struct usb_interface *iface,
 177                              struct usb_driver *driver,
 178                              const struct snd_usb_audio_quirk *quirk)
 179 {
 180         static const struct audioformat ua_format = {
 181                 .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 182                 .channels = 2,
 183                 .fmt_type = UAC_FORMAT_TYPE_I,
 184                 .altsetting = 1,
 185                 .altset_idx = 1,
 186                 .rates = SNDRV_PCM_RATE_CONTINUOUS,
 187         };
 188         struct usb_host_interface *alts;
 189         struct usb_interface_descriptor *altsd;
 190         struct audioformat *fp;
 191         int stream, err;
 192
 193         /* both PCM and MIDI interfaces have 2 or more altsettings */
 194         if (iface->num_altsetting < 2)
 195                 return -ENXIO;
 196         alts = &iface->altsetting[1];
 197         altsd = get_iface_desc(alts);
 198
 199         if (altsd->bNumEndpoints == 2) {
 200                 static const struct snd_usb_midi_endpoint_info ua700_ep = {
 201                         .out_cables = 0x0003,
 202                         .in_cables  = 0x0003
 203                 };
 204                 static const struct snd_usb_audio_quirk ua700_quirk = {
 205                         .type = QUIRK_MIDI_FIXED_ENDPOINT,
 206                         .data = &ua700_ep
 207                 };
 208                 static const struct snd_usb_midi_endpoint_info uaxx_ep = {
 209                         .out_cables = 0x0001,
 210                         .in_cables  = 0x0001
 211                 };
 212                 static const struct snd_usb_audio_quirk uaxx_quirk = {
 213                         .type = QUIRK_MIDI_FIXED_ENDPOINT,
 214                         .data = &uaxx_ep
 215                 };
 216                 const struct snd_usb_audio_quirk *quirk =
 217                         chip->usb_id == USB_ID(0x0582, 0x002b)
 218                         ? &ua700_quirk : &uaxx_quirk;
 219                 return snd_usbmidi_create(chip->card, iface,
 220                                           &chip->midi_list, quirk);
 221         }
 222
 223         if (altsd->bNumEndpoints != 1)
 224                 return -ENXIO;
 225
 226         fp = kmalloc(sizeof(*fp), GFP_KERNEL);
 227         if (!fp)
 228                 return -ENOMEM;
 229         memcpy(fp, &ua_format, sizeof(*fp));
 230
 231         fp->iface = altsd->bInterfaceNumber;
 232         fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
 233         fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
 234         fp->datainterval = 0;
 235         fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 236
 237         switch (fp->maxpacksize) {
 238         case 0x120:
 239                 fp->rate_max = fp->rate_min = 44100;
 240                 break;
 241         case 0x138:
 242         case 0x140:
 243                 fp->rate_max = fp->rate_min = 48000;
 244                 break;
 245         case 0x258:
 246         case 0x260:
 247                 fp->rate_max = fp->rate_min = 96000;
 248                 break;
 249         default:
 250                 snd_printk(KERN_ERR "unknown sample rate\n");
 251                 kfree(fp);
 252                 return -ENXIO;
 253         }
 254
 255         stream = (fp->endpoint & USB_DIR_IN)
 256                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 257         err = snd_usb_add_audio_endpoint(chip, stream, fp);
 258         if (err < 0) {
 259                 kfree(fp);
 260                 return err;
 261         }
 262         usb_set_interface(chip->dev, fp->iface, 0);
 263         return 0;
 264 }
 265
 266 /*
 267  * Create a standard mixer for the specified interface.
 268  */
 269 static int create_standard_mixer_quirk(struct snd_usb_audio *chip,
 270                                        struct usb_interface *iface,
 271                                        struct usb_driver *driver,
 272                                        const struct snd_usb_audio_quirk *quirk)
 273 {
 274         if (quirk->ifnum < 0)
 275                 return 0;
 276
 277         return snd_usb_create_mixer(chip, quirk->ifnum, 0);
 278 }
 279
 280 /*
 281  * audio-interface quirks
 282  *
 283  * returns zero if no standard audio/MIDI parsing is needed.
 284  * returns a positive value if standard audio/midi interfaces are parsed
 285  * after this.
 286  * returns a negative value at error.
 287  */
 288 int snd_usb_create_quirk(struct snd_usb_audio *chip,
 289                          struct usb_interface *iface,
 290                          struct usb_driver *driver,
 291                          const struct snd_usb_audio_quirk *quirk)
 292 {
 293         typedef int (*quirk_func_t)(struct snd_usb_audio *,
 294                                     struct usb_interface *,
 295                                     struct usb_driver *,
 296                                     const struct snd_usb_audio_quirk *);
 297         static const quirk_func_t quirk_funcs[] = {
 298                 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
 299                 [QUIRK_COMPOSITE] = create_composite_quirk,
 300                 [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
 301                 [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
 302                 [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
 303                 [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
 304                 [QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
 305                 [QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
 306                 [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
 307                 [QUIRK_MIDI_CME] = create_any_midi_quirk,
 308                 [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
 309                 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
 310                 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
 311                 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
 312                 [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk,
 313                 [QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
 314         };
 315
 316         if (quirk->type < QUIRK_TYPE_COUNT) {
 317                 return quirk_funcs[quirk->type](chip, iface, driver, quirk);
 318         } else {
 319                 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
 320                 return -ENXIO;
 321         }
 322 }
 323
 324 /*
 325  * boot quirks
 326  */
 327
 328 #define EXTIGY_FIRMWARE_SIZE_OLD 794
 329 #define EXTIGY_FIRMWARE_SIZE_NEW 483
 330
 331 static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
 332 {
 333         struct usb_host_config *config = dev->actconfig;
 334         int err;
 335
 336         if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
 337             le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
 338                 snd_printdd("sending Extigy boot sequence...\n");
 339                 /* Send message to force it to reconnect with full interface. */
 340                 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
 341                                       0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
 342                 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
 343                 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
 344                                 &dev->descriptor, sizeof(dev->descriptor));
 345                 config = dev->actconfig;
 346                 if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
 347                 err = usb_reset_configuration(dev);
 348                 if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
 349                 snd_printdd("extigy_boot: new boot length = %d\n",
 350                             le16_to_cpu(get_cfg_desc(config)->wTotalLength));
 351                 return -ENODEV; /* quit this anyway */
 352         }
 353         return 0;
 354 }
 355
 356 static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
 357 {
 358         u8 buf = 1;
 359
 360         snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
 361                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 362                         0, 0, &buf, 1, 1000);
 363         if (buf == 0) {
 364                 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
 365                                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 366                                 1, 2000, NULL, 0, 1000);
 367                 return -ENODEV;
 368         }
 369         return 0;
 370 }
 371
 372 /*
 373  * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
 374  * documented in the device's data sheet.
 375  */
 376 static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
 377 {
 378         u8 buf[4];
 379         buf[0] = 0x20;
 380         buf[1] = value & 0xff;
 381         buf[2] = (value >> 8) & 0xff;
 382         buf[3] = reg;
 383         return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
 384                                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
 385                                0, 0, &buf, 4, 1000);
 386 }
 387
 388 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
 389 {
 390         /*
 391          * Enable line-out driver mode, set headphone source to front
 392          * channels, enable stereo mic.
 393          */
 394         return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
 395 }
 396
 397 /*
 398  * C-Media CM6206 is based on CM106 with two additional
 399  * registers that are not documented in the data sheet.
 400  * Values here are chosen based on sniffing USB traffic
 401  * under Windows.
 402  */
 403 static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
 404 {
 405         int err, reg;
 406         int val[] = {0x2004, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
 407
 408         for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
 409                 err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
 410                 if (err < 0)
 411                         return err;
 412         }
 413
 414         return err;
 415 }
 416
 417 /*
 418  * This call will put the synth in "USB send" mode, i.e it will send MIDI
 419  * messages through USB (this is disabled at startup). The synth will
 420  * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
 421  * sign on its LCD. Values here are chosen based on sniffing USB traffic
 422  * under Windows.
 423  */
 424 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
 425 {
 426         int err, actual_length;
 427
 428         /* "midi send" enable */
 429         static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
 430
 431         void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
 432         if (!buf)
 433                 return -ENOMEM;
 434         err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
 435                         ARRAY_SIZE(seq), &actual_length, 1000);
 436         kfree(buf);
 437         if (err < 0)
 438                 return err;
 439
 440         return 0;
 441 }
 442
 443 /*
 444  * Some sound cards from Native Instruments are in fact compliant to the USB
 445  * audio standard of version 2 and other approved USB standards, even though
 446  * they come up as vendor-specific device when first connected.
 447  *
 448  * However, they can be told to come up with a new set of descriptors
 449  * upon their next enumeration, and the interfaces announced by the new
 450  * descriptors will then be handled by the kernel's class drivers. As the
 451  * product ID will also change, no further checks are required.
 452  */
 453
 454 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
 455 {
 456         int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 457                                   0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 458                                   cpu_to_le16(1), 0, NULL, 0, 1000);
 459
 460         if (ret < 0)
 461                 return ret;
 462
 463         usb_reset_device(dev);
 464
 465         /* return -EAGAIN, so the creation of an audio interface for this
 466          * temporary device is aborted. The device will reconnect with a
 467          * new product ID */
 468         return -EAGAIN;
 469 }
 470
 471 /*
 472  * Setup quirks
 473  */
 474 #define AUDIOPHILE_SET                  0x01 /* if set, parse device_setup */
 475 #define AUDIOPHILE_SET_DTS              0x02 /* if set, enable DTS Digital Output */
 476 #define AUDIOPHILE_SET_96K              0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
 477 #define AUDIOPHILE_SET_24B              0x08 /* 24bits sample if set, 16bits otherwise */
 478 #define AUDIOPHILE_SET_DI               0x10 /* if set, enable Digital Input */
 479 #define AUDIOPHILE_SET_MASK             0x1F /* bit mask for setup value */
 480 #define AUDIOPHILE_SET_24B_48K_DI       0x19 /* value for 24bits+48KHz+Digital Input */
 481 #define AUDIOPHILE_SET_24B_48K_NOTDI    0x09 /* value for 24bits+48KHz+No Digital Input */
 482 #define AUDIOPHILE_SET_16B_48K_DI       0x11 /* value for 16bits+48KHz+Digital Input */
 483 #define AUDIOPHILE_SET_16B_48K_NOTDI    0x01 /* value for 16bits+48KHz+No Digital Input */
 484
 485 static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
 486                                          int iface,
 487                                          int altno)
 488 {
 489         /* Reset ALL ifaces to 0 altsetting.
 490          * Call it for every possible altsetting of every interface.
 491          */
 492         usb_set_interface(chip->dev, iface, 0);
 493
 494         if (chip->setup & AUDIOPHILE_SET) {
 495                 if ((chip->setup & AUDIOPHILE_SET_DTS)
 496                     && altno != 6)
 497                         return 1; /* skip this altsetting */
 498                 if ((chip->setup & AUDIOPHILE_SET_96K)
 499                     && altno != 1)
 500                         return 1; /* skip this altsetting */
 501                 if ((chip->setup & AUDIOPHILE_SET_MASK) ==
 502                     AUDIOPHILE_SET_24B_48K_DI && altno != 2)
 503                         return 1; /* skip this altsetting */
 504                 if ((chip->setup & AUDIOPHILE_SET_MASK) ==
 505                     AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
 506                         return 1; /* skip this altsetting */
 507                 if ((chip->setup & AUDIOPHILE_SET_MASK) ==
 508                     AUDIOPHILE_SET_16B_48K_DI && altno != 4)
 509                         return 1; /* skip this altsetting */
 510                 if ((chip->setup & AUDIOPHILE_SET_MASK) ==
 511                     AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
 512                         return 1; /* skip this altsetting */
 513         }
 514
 515         return 0; /* keep this altsetting */
 516 }
 517
 518 int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
 519                                   int iface,
 520                                   int altno)
 521 {
 522         /* audiophile usb: skip altsets incompatible with device_setup */
 523         if (chip->usb_id == USB_ID(0x0763, 0x2003))
 524                 return audiophile_skip_setting_quirk(chip, iface, altno);
 525
 526         return 0;
 527 }
 528
 529 int snd_usb_apply_boot_quirk(struct usb_device *dev,
 530                              struct usb_interface *intf,
 531                              const struct snd_usb_audio_quirk *quirk)
 532 {
 533         u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
 534                         le16_to_cpu(dev->descriptor.idProduct));
 535
 536         switch (id) {
 537         case USB_ID(0x041e, 0x3000):
 538                 /* SB Extigy needs special boot-up sequence */
 539                 /* if more models come, this will go to the quirk list. */
 540                 return snd_usb_extigy_boot_quirk(dev, intf);
 541
 542         case USB_ID(0x041e, 0x3020):
 543                 /* SB Audigy 2 NX needs its own boot-up magic, too */
 544                 return snd_usb_audigy2nx_boot_quirk(dev);
 545
 546         case USB_ID(0x10f5, 0x0200):
 547                 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
 548                 return snd_usb_cm106_boot_quirk(dev);
 549
 550         case USB_ID(0x0d8c, 0x0102):
 551                 /* C-Media CM6206 / CM106-Like Sound Device */
 552         case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
 553                 return snd_usb_cm6206_boot_quirk(dev);
 554
 555         case USB_ID(0x133e, 0x0815):
 556                 /* Access Music VirusTI Desktop */
 557                 return snd_usb_accessmusic_boot_quirk(dev);
 558
 559         case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
 560         case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
 561         case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
 562                 return snd_usb_nativeinstruments_boot_quirk(dev);
 563         }
 564
 565         return 0;
 566 }
 567
 568 /*
 569  * check if the device uses big-endian samples
 570  */
 571 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
 572 {
 573         switch (chip->usb_id) {
 574         case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
 575                 if (fp->endpoint & USB_DIR_IN)
 576                         return 1;
 577                 break;
 578         case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
 579                 if (chip->setup == 0x00 ||
 580                     fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
 581                         return 1;
 582         }
 583         return 0;
 584 }
 585
 586 /*
 587  * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
 588  * not for interface.
 589  */
 590
 591 enum {
 592         EMU_QUIRK_SR_44100HZ = 0,
 593         EMU_QUIRK_SR_48000HZ,
 594         EMU_QUIRK_SR_88200HZ,
 595         EMU_QUIRK_SR_96000HZ,
 596         EMU_QUIRK_SR_176400HZ,
 597         EMU_QUIRK_SR_192000HZ
 598 };
 599
 600 static void set_format_emu_quirk(struct snd_usb_substream *subs,
 601                                  struct audioformat *fmt)
 602 {
 603         unsigned char emu_samplerate_id = 0;
 604
 605         /* When capture is active
 606          * sample rate shouldn't be changed
 607          * by playback substream
 608          */
 609         if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
 610                 if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
 611                         return;
 612         }
 613
 614         switch (fmt->rate_min) {
 615         case 48000:
 616                 emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
 617                 break;
 618         case 88200:
 619                 emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
 620                 break;
 621         case 96000:
 622                 emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
 623                 break;
 624         case 176400:
 625                 emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
 626                 break;
 627         case 192000:
 628                 emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
 629                 break;
 630         default:
 631                 emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
 632                 break;
 633         }
 634         snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
 635 }
 636
 637 void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
 638                               struct audioformat *fmt)
 639 {
 640         switch (subs->stream->chip->usb_id) {
 641         case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
 642         case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
 643         case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
 644         case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
 645                 set_format_emu_quirk(subs, fmt);
 646                 break;
 647         }
 648 }
 649