sound/usb/quirks.c

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This source file includes following definitions.
create_composite_quirk
ignore_interface_quirk
create_align_transfer_quirk
create_any_midi_quirk
create_standard_audio_quirk
create_fixed_stream_quirk
create_auto_pcm_quirk
create_yamaha_midi_quirk
create_roland_midi_quirk
create_std_midi_quirk
create_auto_midi_quirk
create_autodetect_quirk
create_autodetect_quirks
create_uaxx_quirk
create_standard_mixer_quirk
setup_fmt_after_resume_quirk
snd_usb_create_quirk
snd_usb_extigy_boot_quirk
snd_usb_audigy2nx_boot_quirk
snd_usb_fasttrackpro_boot_quirk
snd_usb_cm106_write_int_reg
snd_usb_cm106_boot_quirk
snd_usb_cm6206_boot_quirk
snd_usb_gamecon780_boot_quirk
snd_usb_novation_boot_quirk
snd_usb_accessmusic_boot_quirk
snd_usb_nativeinstruments_boot_quirk
mbox2_setup_48_24_magic
snd_usb_mbox2_boot_quirk
snd_usb_axefx3_boot_quirk
snd_usb_motu_microbookii_communicate
snd_usb_motu_microbookii_boot_quirk
snd_usb_motu_m_series_boot_quirk
quattro_skip_setting_quirk
audiophile_skip_setting_quirk
fasttrackpro_skip_setting_quirk
snd_usb_apply_interface_quirk
snd_usb_apply_boot_quirk
snd_usb_apply_boot_quirk_once
snd_usb_is_big_endian_format
set_format_emu_quirk
snd_usb_set_format_quirk
snd_usb_get_sample_rate_quirk
is_itf_usb_dsd_dac
snd_usb_select_mode_quirk
snd_usb_endpoint_start_quirk
snd_usb_set_interface_quirk
snd_usb_ctl_msg_quirk
snd_usb_interface_dsd_format_quirks
snd_usb_audioformat_attributes_quirk
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  */
   4 
   5 #include <linux/init.h>
   6 #include <linux/slab.h>
   7 #include <linux/usb.h>
   8 #include <linux/usb/audio.h>
   9 #include <linux/usb/midi.h>
  10 #include <linux/bits.h>
  11 
  12 #include <sound/control.h>
  13 #include <sound/core.h>
  14 #include <sound/info.h>
  15 #include <sound/pcm.h>
  16 
  17 #include "usbaudio.h"
  18 #include "card.h"
  19 #include "mixer.h"
  20 #include "mixer_quirks.h"
  21 #include "midi.h"
  22 #include "quirks.h"
  23 #include "helper.h"
  24 #include "endpoint.h"
  25 #include "pcm.h"
  26 #include "clock.h"
  27 #include "stream.h"
  28 
  29 /*
  30  * handle the quirks for the contained interfaces
  31  */
  32 static int create_composite_quirk(struct snd_usb_audio *chip,
  33                                   struct usb_interface *iface,
  34                                   struct usb_driver *driver,
  35                                   const struct snd_usb_audio_quirk *quirk_comp)
  36 {
  37         int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
  38         const struct snd_usb_audio_quirk *quirk;
  39         int err;
  40 
  41         for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
  42                 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
  43                 if (!iface)
  44                         continue;
  45                 if (quirk->ifnum != probed_ifnum &&
  46                     usb_interface_claimed(iface))
  47                         continue;
  48                 err = snd_usb_create_quirk(chip, iface, driver, quirk);
  49                 if (err < 0)
  50                         return err;
  51         }
  52 
  53         for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
  54                 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
  55                 if (!iface)
  56                         continue;
  57                 if (quirk->ifnum != probed_ifnum &&
  58                     !usb_interface_claimed(iface))
  59                         usb_driver_claim_interface(driver, iface, (void *)-1L);
  60         }
  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         if (chip->usb_id == USB_ID(0x1686, 0x00dd)) /* Zoom R16/24 */
 108                 chip->tx_length_quirk = 1;
 109 
 110         alts = &iface->altsetting[0];
 111         altsd = get_iface_desc(alts);
 112         err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber);
 113         if (err < 0) {
 114                 usb_audio_err(chip, "cannot setup if %d: error %d\n",
 115                            altsd->bInterfaceNumber, err);
 116                 return err;
 117         }
 118         /* reset the current interface */
 119         usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
 120         return 0;
 121 }
 122 
 123 /*
 124  * create a stream for an endpoint/altsetting without proper descriptors
 125  */
 126 static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
 127                                      struct usb_interface *iface,
 128                                      struct usb_driver *driver,
 129                                      const struct snd_usb_audio_quirk *quirk)
 130 {
 131         struct audioformat *fp;
 132         struct usb_host_interface *alts;
 133         struct usb_interface_descriptor *altsd;
 134         int stream, err;
 135         unsigned *rate_table = NULL;
 136 
 137         fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
 138         if (!fp)
 139                 return -ENOMEM;
 140 
 141         INIT_LIST_HEAD(&fp->list);
 142         if (fp->nr_rates > MAX_NR_RATES) {
 143                 kfree(fp);
 144                 return -EINVAL;
 145         }
 146         if (fp->nr_rates > 0) {
 147                 rate_table = kmemdup(fp->rate_table,
 148                                      sizeof(int) * fp->nr_rates, GFP_KERNEL);
 149                 if (!rate_table) {
 150                         kfree(fp);
 151                         return -ENOMEM;
 152                 }
 153                 fp->rate_table = rate_table;
 154         }
 155 
 156         stream = (fp->endpoint & USB_DIR_IN)
 157                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 158         err = snd_usb_add_audio_stream(chip, stream, fp);
 159         if (err < 0)
 160                 goto error;
 161         if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
 162             fp->altset_idx >= iface->num_altsetting) {
 163                 err = -EINVAL;
 164                 goto error;
 165         }
 166         alts = &iface->altsetting[fp->altset_idx];
 167         altsd = get_iface_desc(alts);
 168         if (altsd->bNumEndpoints < 1) {
 169                 err = -EINVAL;
 170                 goto error;
 171         }
 172 
 173         fp->protocol = altsd->bInterfaceProtocol;
 174 
 175         if (fp->datainterval == 0)
 176                 fp->datainterval = snd_usb_parse_datainterval(chip, alts);
 177         if (fp->maxpacksize == 0)
 178                 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 179         usb_set_interface(chip->dev, fp->iface, 0);
 180         snd_usb_init_pitch(chip, fp->iface, alts, fp);
 181         snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
 182         return 0;
 183 
 184  error:
 185         list_del(&fp->list); /* unlink for avoiding double-free */
 186         kfree(fp);
 187         kfree(rate_table);
 188         return err;
 189 }
 190 
 191 static int create_auto_pcm_quirk(struct snd_usb_audio *chip,
 192                                  struct usb_interface *iface,
 193                                  struct usb_driver *driver)
 194 {
 195         struct usb_host_interface *alts;
 196         struct usb_interface_descriptor *altsd;
 197         struct usb_endpoint_descriptor *epd;
 198         struct uac1_as_header_descriptor *ashd;
 199         struct uac_format_type_i_discrete_descriptor *fmtd;
 200 
 201         /*
 202          * Most Roland/Yamaha audio streaming interfaces have more or less
 203          * standard descriptors, but older devices might lack descriptors, and
 204          * future ones might change, so ensure that we fail silently if the
 205          * interface doesn't look exactly right.
 206          */
 207 
 208         /* must have a non-zero altsetting for streaming */
 209         if (iface->num_altsetting < 2)
 210                 return -ENODEV;
 211         alts = &iface->altsetting[1];
 212         altsd = get_iface_desc(alts);
 213 
 214         /* must have an isochronous endpoint for streaming */
 215         if (altsd->bNumEndpoints < 1)
 216                 return -ENODEV;
 217         epd = get_endpoint(alts, 0);
 218         if (!usb_endpoint_xfer_isoc(epd))
 219                 return -ENODEV;
 220 
 221         /* must have format descriptors */
 222         ashd = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL,
 223                                        UAC_AS_GENERAL);
 224         fmtd = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL,
 225                                        UAC_FORMAT_TYPE);
 226         if (!ashd || ashd->bLength < 7 ||
 227             !fmtd || fmtd->bLength < 8)
 228                 return -ENODEV;
 229 
 230         return create_standard_audio_quirk(chip, iface, driver, NULL);
 231 }
 232 
 233 static int create_yamaha_midi_quirk(struct snd_usb_audio *chip,
 234                                     struct usb_interface *iface,
 235                                     struct usb_driver *driver,
 236                                     struct usb_host_interface *alts)
 237 {
 238         static const struct snd_usb_audio_quirk yamaha_midi_quirk = {
 239                 .type = QUIRK_MIDI_YAMAHA
 240         };
 241         struct usb_midi_in_jack_descriptor *injd;
 242         struct usb_midi_out_jack_descriptor *outjd;
 243 
 244         /* must have some valid jack descriptors */
 245         injd = snd_usb_find_csint_desc(alts->extra, alts->extralen,
 246                                        NULL, USB_MS_MIDI_IN_JACK);
 247         outjd = snd_usb_find_csint_desc(alts->extra, alts->extralen,
 248                                         NULL, USB_MS_MIDI_OUT_JACK);
 249         if (!injd && !outjd)
 250                 return -ENODEV;
 251         if ((injd && !snd_usb_validate_midi_desc(injd)) ||
 252             (outjd && !snd_usb_validate_midi_desc(outjd)))
 253                 return -ENODEV;
 254         if (injd && (injd->bLength < 5 ||
 255                      (injd->bJackType != USB_MS_EMBEDDED &&
 256                       injd->bJackType != USB_MS_EXTERNAL)))
 257                 return -ENODEV;
 258         if (outjd && (outjd->bLength < 6 ||
 259                       (outjd->bJackType != USB_MS_EMBEDDED &&
 260                        outjd->bJackType != USB_MS_EXTERNAL)))
 261                 return -ENODEV;
 262         return create_any_midi_quirk(chip, iface, driver, &yamaha_midi_quirk);
 263 }
 264 
 265 static int create_roland_midi_quirk(struct snd_usb_audio *chip,
 266                                     struct usb_interface *iface,
 267                                     struct usb_driver *driver,
 268                                     struct usb_host_interface *alts)
 269 {
 270         static const struct snd_usb_audio_quirk roland_midi_quirk = {
 271                 .type = QUIRK_MIDI_ROLAND
 272         };
 273         u8 *roland_desc = NULL;
 274 
 275         /* might have a vendor-specific descriptor <06 24 F1 02 ...> */
 276         for (;;) {
 277                 roland_desc = snd_usb_find_csint_desc(alts->extra,
 278                                                       alts->extralen,
 279                                                       roland_desc, 0xf1);
 280                 if (!roland_desc)
 281                         return -ENODEV;
 282                 if (roland_desc[0] < 6 || roland_desc[3] != 2)
 283                         continue;
 284                 return create_any_midi_quirk(chip, iface, driver,
 285                                              &roland_midi_quirk);
 286         }
 287 }
 288 
 289 static int create_std_midi_quirk(struct snd_usb_audio *chip,
 290                                  struct usb_interface *iface,
 291                                  struct usb_driver *driver,
 292                                  struct usb_host_interface *alts)
 293 {
 294         struct usb_ms_header_descriptor *mshd;
 295         struct usb_ms_endpoint_descriptor *msepd;
 296 
 297         /* must have the MIDIStreaming interface header descriptor*/
 298         mshd = (struct usb_ms_header_descriptor *)alts->extra;
 299         if (alts->extralen < 7 ||
 300             mshd->bLength < 7 ||
 301             mshd->bDescriptorType != USB_DT_CS_INTERFACE ||
 302             mshd->bDescriptorSubtype != USB_MS_HEADER)
 303                 return -ENODEV;
 304         /* must have the MIDIStreaming endpoint descriptor*/
 305         msepd = (struct usb_ms_endpoint_descriptor *)alts->endpoint[0].extra;
 306         if (alts->endpoint[0].extralen < 4 ||
 307             msepd->bLength < 4 ||
 308             msepd->bDescriptorType != USB_DT_CS_ENDPOINT ||
 309             msepd->bDescriptorSubtype != UAC_MS_GENERAL ||
 310             msepd->bNumEmbMIDIJack < 1 ||
 311             msepd->bNumEmbMIDIJack > 16)
 312                 return -ENODEV;
 313 
 314         return create_any_midi_quirk(chip, iface, driver, NULL);
 315 }
 316 
 317 static int create_auto_midi_quirk(struct snd_usb_audio *chip,
 318                                   struct usb_interface *iface,
 319                                   struct usb_driver *driver)
 320 {
 321         struct usb_host_interface *alts;
 322         struct usb_interface_descriptor *altsd;
 323         struct usb_endpoint_descriptor *epd;
 324         int err;
 325 
 326         alts = &iface->altsetting[0];
 327         altsd = get_iface_desc(alts);
 328 
 329         /* must have at least one bulk/interrupt endpoint for streaming */
 330         if (altsd->bNumEndpoints < 1)
 331                 return -ENODEV;
 332         epd = get_endpoint(alts, 0);
 333         if (!usb_endpoint_xfer_bulk(epd) &&
 334             !usb_endpoint_xfer_int(epd))
 335                 return -ENODEV;
 336 
 337         switch (USB_ID_VENDOR(chip->usb_id)) {
 338         case 0x0499: /* Yamaha */
 339                 err = create_yamaha_midi_quirk(chip, iface, driver, alts);
 340                 if (err != -ENODEV)
 341                         return err;
 342                 break;
 343         case 0x0582: /* Roland */
 344                 err = create_roland_midi_quirk(chip, iface, driver, alts);
 345                 if (err != -ENODEV)
 346                         return err;
 347                 break;
 348         }
 349 
 350         return create_std_midi_quirk(chip, iface, driver, alts);
 351 }
 352 
 353 static int create_autodetect_quirk(struct snd_usb_audio *chip,
 354                                    struct usb_interface *iface,
 355                                    struct usb_driver *driver)
 356 {
 357         int err;
 358 
 359         err = create_auto_pcm_quirk(chip, iface, driver);
 360         if (err == -ENODEV)
 361                 err = create_auto_midi_quirk(chip, iface, driver);
 362         return err;
 363 }
 364 
 365 static int create_autodetect_quirks(struct snd_usb_audio *chip,
 366                                     struct usb_interface *iface,
 367                                     struct usb_driver *driver,
 368                                     const struct snd_usb_audio_quirk *quirk)
 369 {
 370         int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
 371         int ifcount, ifnum, err;
 372 
 373         err = create_autodetect_quirk(chip, iface, driver);
 374         if (err < 0)
 375                 return err;
 376 
 377         /*
 378          * ALSA PCM playback/capture devices cannot be registered in two steps,
 379          * so we have to claim the other corresponding interface here.
 380          */
 381         ifcount = chip->dev->actconfig->desc.bNumInterfaces;
 382         for (ifnum = 0; ifnum < ifcount; ifnum++) {
 383                 if (ifnum == probed_ifnum || quirk->ifnum >= 0)
 384                         continue;
 385                 iface = usb_ifnum_to_if(chip->dev, ifnum);
 386                 if (!iface ||
 387                     usb_interface_claimed(iface) ||
 388                     get_iface_desc(iface->altsetting)->bInterfaceClass !=
 389                                                         USB_CLASS_VENDOR_SPEC)
 390                         continue;
 391 
 392                 err = create_autodetect_quirk(chip, iface, driver);
 393                 if (err >= 0)
 394                         usb_driver_claim_interface(driver, iface, (void *)-1L);
 395         }
 396 
 397         return 0;
 398 }
 399 
 400 /*
 401  * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.  
 402  * The only way to detect the sample rate is by looking at wMaxPacketSize.
 403  */
 404 static int create_uaxx_quirk(struct snd_usb_audio *chip,
 405                              struct usb_interface *iface,
 406                              struct usb_driver *driver,
 407                              const struct snd_usb_audio_quirk *quirk)
 408 {
 409         static const struct audioformat ua_format = {
 410                 .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 411                 .channels = 2,
 412                 .fmt_type = UAC_FORMAT_TYPE_I,
 413                 .altsetting = 1,
 414                 .altset_idx = 1,
 415                 .rates = SNDRV_PCM_RATE_CONTINUOUS,
 416         };
 417         struct usb_host_interface *alts;
 418         struct usb_interface_descriptor *altsd;
 419         struct audioformat *fp;
 420         int stream, err;
 421 
 422         /* both PCM and MIDI interfaces have 2 or more altsettings */
 423         if (iface->num_altsetting < 2)
 424                 return -ENXIO;
 425         alts = &iface->altsetting[1];
 426         altsd = get_iface_desc(alts);
 427 
 428         if (altsd->bNumEndpoints == 2) {
 429                 static const struct snd_usb_midi_endpoint_info ua700_ep = {
 430                         .out_cables = 0x0003,
 431                         .in_cables  = 0x0003
 432                 };
 433                 static const struct snd_usb_audio_quirk ua700_quirk = {
 434                         .type = QUIRK_MIDI_FIXED_ENDPOINT,
 435                         .data = &ua700_ep
 436                 };
 437                 static const struct snd_usb_midi_endpoint_info uaxx_ep = {
 438                         .out_cables = 0x0001,
 439                         .in_cables  = 0x0001
 440                 };
 441                 static const struct snd_usb_audio_quirk uaxx_quirk = {
 442                         .type = QUIRK_MIDI_FIXED_ENDPOINT,
 443                         .data = &uaxx_ep
 444                 };
 445                 const struct snd_usb_audio_quirk *quirk =
 446                         chip->usb_id == USB_ID(0x0582, 0x002b)
 447                         ? &ua700_quirk : &uaxx_quirk;
 448                 return __snd_usbmidi_create(chip->card, iface,
 449                                           &chip->midi_list, quirk,
 450                                           chip->usb_id);
 451         }
 452 
 453         if (altsd->bNumEndpoints != 1)
 454                 return -ENXIO;
 455 
 456         fp = kmemdup(&ua_format, sizeof(*fp), GFP_KERNEL);
 457         if (!fp)
 458                 return -ENOMEM;
 459 
 460         fp->iface = altsd->bInterfaceNumber;
 461         fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
 462         fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
 463         fp->datainterval = 0;
 464         fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 465         INIT_LIST_HEAD(&fp->list);
 466 
 467         switch (fp->maxpacksize) {
 468         case 0x120:
 469                 fp->rate_max = fp->rate_min = 44100;
 470                 break;
 471         case 0x138:
 472         case 0x140:
 473                 fp->rate_max = fp->rate_min = 48000;
 474                 break;
 475         case 0x258:
 476         case 0x260:
 477                 fp->rate_max = fp->rate_min = 96000;
 478                 break;
 479         default:
 480                 usb_audio_err(chip, "unknown sample rate\n");
 481                 kfree(fp);
 482                 return -ENXIO;
 483         }
 484 
 485         stream = (fp->endpoint & USB_DIR_IN)
 486                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 487         err = snd_usb_add_audio_stream(chip, stream, fp);
 488         if (err < 0) {
 489                 list_del(&fp->list); /* unlink for avoiding double-free */
 490                 kfree(fp);
 491                 return err;
 492         }
 493         usb_set_interface(chip->dev, fp->iface, 0);
 494         return 0;
 495 }
 496 
 497 /*
 498  * Create a standard mixer for the specified interface.
 499  */
 500 static int create_standard_mixer_quirk(struct snd_usb_audio *chip,
 501                                        struct usb_interface *iface,
 502                                        struct usb_driver *driver,
 503                                        const struct snd_usb_audio_quirk *quirk)
 504 {
 505         if (quirk->ifnum < 0)
 506                 return 0;
 507 
 508         return snd_usb_create_mixer(chip, quirk->ifnum, 0);
 509 }
 510 
 511 
 512 static int setup_fmt_after_resume_quirk(struct snd_usb_audio *chip,
 513                                        struct usb_interface *iface,
 514                                        struct usb_driver *driver,
 515                                        const struct snd_usb_audio_quirk *quirk)
 516 {
 517         chip->setup_fmt_after_resume_quirk = 1;
 518         return 1;       /* Continue with creating streams and mixer */
 519 }
 520 
 521 /*
 522  * audio-interface quirks
 523  *
 524  * returns zero if no standard audio/MIDI parsing is needed.
 525  * returns a positive value if standard audio/midi interfaces are parsed
 526  * after this.
 527  * returns a negative value at error.
 528  */
 529 int snd_usb_create_quirk(struct snd_usb_audio *chip,
 530                          struct usb_interface *iface,
 531                          struct usb_driver *driver,
 532                          const struct snd_usb_audio_quirk *quirk)
 533 {
 534         typedef int (*quirk_func_t)(struct snd_usb_audio *,
 535                                     struct usb_interface *,
 536                                     struct usb_driver *,
 537                                     const struct snd_usb_audio_quirk *);
 538         static const quirk_func_t quirk_funcs[] = {
 539                 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
 540                 [QUIRK_COMPOSITE] = create_composite_quirk,
 541                 [QUIRK_AUTODETECT] = create_autodetect_quirks,
 542                 [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
 543                 [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
 544                 [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
 545                 [QUIRK_MIDI_ROLAND] = create_any_midi_quirk,
 546                 [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
 547                 [QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
 548                 [QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
 549                 [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
 550                 [QUIRK_MIDI_CME] = create_any_midi_quirk,
 551                 [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
 552                 [QUIRK_MIDI_FTDI] = create_any_midi_quirk,
 553                 [QUIRK_MIDI_CH345] = create_any_midi_quirk,
 554                 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
 555                 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
 556                 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
 557                 [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk,
 558                 [QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
 559                 [QUIRK_SETUP_FMT_AFTER_RESUME] = setup_fmt_after_resume_quirk,
 560         };
 561 
 562         if (quirk->type < QUIRK_TYPE_COUNT) {
 563                 return quirk_funcs[quirk->type](chip, iface, driver, quirk);
 564         } else {
 565                 usb_audio_err(chip, "invalid quirk type %d\n", quirk->type);
 566                 return -ENXIO;
 567         }
 568 }
 569 
 570 /*
 571  * boot quirks
 572  */
 573 
 574 #define EXTIGY_FIRMWARE_SIZE_OLD 794
 575 #define EXTIGY_FIRMWARE_SIZE_NEW 483
 576 
 577 static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
 578 {
 579         struct usb_host_config *config = dev->actconfig;
 580         int err;
 581 
 582         if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
 583             le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
 584                 dev_dbg(&dev->dev, "sending Extigy boot sequence...\n");
 585                 /* Send message to force it to reconnect with full interface. */
 586                 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
 587                                       0x10, 0x43, 0x0001, 0x000a, NULL, 0);
 588                 if (err < 0)
 589                         dev_dbg(&dev->dev, "error sending boot message: %d\n", err);
 590                 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
 591                                 &dev->descriptor, sizeof(dev->descriptor));
 592                 config = dev->actconfig;
 593                 if (err < 0)
 594                         dev_dbg(&dev->dev, "error usb_get_descriptor: %d\n", err);
 595                 err = usb_reset_configuration(dev);
 596                 if (err < 0)
 597                         dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err);
 598                 dev_dbg(&dev->dev, "extigy_boot: new boot length = %d\n",
 599                             le16_to_cpu(get_cfg_desc(config)->wTotalLength));
 600                 return -ENODEV; /* quit this anyway */
 601         }
 602         return 0;
 603 }
 604 
 605 static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
 606 {
 607         u8 buf = 1;
 608 
 609         snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
 610                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 611                         0, 0, &buf, 1);
 612         if (buf == 0) {
 613                 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
 614                                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 615                                 1, 2000, NULL, 0);
 616                 return -ENODEV;
 617         }
 618         return 0;
 619 }
 620 
 621 static int snd_usb_fasttrackpro_boot_quirk(struct usb_device *dev)
 622 {
 623         int err;
 624 
 625         if (dev->actconfig->desc.bConfigurationValue == 1) {
 626                 dev_info(&dev->dev,
 627                            "Fast Track Pro switching to config #2\n");
 628                 /* This function has to be available by the usb core module.
 629                  * if it is not avialable the boot quirk has to be left out
 630                  * and the configuration has to be set by udev or hotplug
 631                  * rules
 632                  */
 633                 err = usb_driver_set_configuration(dev, 2);
 634                 if (err < 0)
 635                         dev_dbg(&dev->dev,
 636                                 "error usb_driver_set_configuration: %d\n",
 637                                 err);
 638                 /* Always return an error, so that we stop creating a device
 639                    that will just be destroyed and recreated with a new
 640                    configuration */
 641                 return -ENODEV;
 642         } else
 643                 dev_info(&dev->dev, "Fast Track Pro config OK\n");
 644 
 645         return 0;
 646 }
 647 
 648 /*
 649  * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
 650  * documented in the device's data sheet.
 651  */
 652 static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
 653 {
 654         u8 buf[4];
 655         buf[0] = 0x20;
 656         buf[1] = value & 0xff;
 657         buf[2] = (value >> 8) & 0xff;
 658         buf[3] = reg;
 659         return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
 660                                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
 661                                0, 0, &buf, 4);
 662 }
 663 
 664 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
 665 {
 666         /*
 667          * Enable line-out driver mode, set headphone source to front
 668          * channels, enable stereo mic.
 669          */
 670         return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
 671 }
 672 
 673 /*
 674  * CM6206 registers from the CM6206 datasheet rev 2.1
 675  */
 676 #define CM6206_REG0_DMA_MASTER BIT(15)
 677 #define CM6206_REG0_SPDIFO_RATE_48K (2 << 12)
 678 #define CM6206_REG0_SPDIFO_RATE_96K (7 << 12)
 679 /* Bit 4 thru 11 is the S/PDIF category code */
 680 #define CM6206_REG0_SPDIFO_CAT_CODE_GENERAL (0 << 4)
 681 #define CM6206_REG0_SPDIFO_EMPHASIS_CD BIT(3)
 682 #define CM6206_REG0_SPDIFO_COPYRIGHT_NA BIT(2)
 683 #define CM6206_REG0_SPDIFO_NON_AUDIO BIT(1)
 684 #define CM6206_REG0_SPDIFO_PRO_FORMAT BIT(0)
 685 
 686 #define CM6206_REG1_TEST_SEL_CLK BIT(14)
 687 #define CM6206_REG1_PLLBIN_EN BIT(13)
 688 #define CM6206_REG1_SOFT_MUTE_EN BIT(12)
 689 #define CM6206_REG1_GPIO4_OUT BIT(11)
 690 #define CM6206_REG1_GPIO4_OE BIT(10)
 691 #define CM6206_REG1_GPIO3_OUT BIT(9)
 692 #define CM6206_REG1_GPIO3_OE BIT(8)
 693 #define CM6206_REG1_GPIO2_OUT BIT(7)
 694 #define CM6206_REG1_GPIO2_OE BIT(6)
 695 #define CM6206_REG1_GPIO1_OUT BIT(5)
 696 #define CM6206_REG1_GPIO1_OE BIT(4)
 697 #define CM6206_REG1_SPDIFO_INVALID BIT(3)
 698 #define CM6206_REG1_SPDIF_LOOP_EN BIT(2)
 699 #define CM6206_REG1_SPDIFO_DIS BIT(1)
 700 #define CM6206_REG1_SPDIFI_MIX BIT(0)
 701 
 702 #define CM6206_REG2_DRIVER_ON BIT(15)
 703 #define CM6206_REG2_HEADP_SEL_SIDE_CHANNELS (0 << 13)
 704 #define CM6206_REG2_HEADP_SEL_SURROUND_CHANNELS (1 << 13)
 705 #define CM6206_REG2_HEADP_SEL_CENTER_SUBW (2 << 13)
 706 #define CM6206_REG2_HEADP_SEL_FRONT_CHANNELS (3 << 13)
 707 #define CM6206_REG2_MUTE_HEADPHONE_RIGHT BIT(12)
 708 #define CM6206_REG2_MUTE_HEADPHONE_LEFT BIT(11)
 709 #define CM6206_REG2_MUTE_REAR_SURROUND_RIGHT BIT(10)
 710 #define CM6206_REG2_MUTE_REAR_SURROUND_LEFT BIT(9)
 711 #define CM6206_REG2_MUTE_SIDE_SURROUND_RIGHT BIT(8)
 712 #define CM6206_REG2_MUTE_SIDE_SURROUND_LEFT BIT(7)
 713 #define CM6206_REG2_MUTE_SUBWOOFER BIT(6)
 714 #define CM6206_REG2_MUTE_CENTER BIT(5)
 715 #define CM6206_REG2_MUTE_RIGHT_FRONT BIT(3)
 716 #define CM6206_REG2_MUTE_LEFT_FRONT BIT(3)
 717 #define CM6206_REG2_EN_BTL BIT(2)
 718 #define CM6206_REG2_MCUCLKSEL_1_5_MHZ (0)
 719 #define CM6206_REG2_MCUCLKSEL_3_MHZ (1)
 720 #define CM6206_REG2_MCUCLKSEL_6_MHZ (2)
 721 #define CM6206_REG2_MCUCLKSEL_12_MHZ (3)
 722 
 723 /* Bit 11..13 sets the sensitivity to FLY tuner volume control VP/VD signal */
 724 #define CM6206_REG3_FLYSPEED_DEFAULT (2 << 11)
 725 #define CM6206_REG3_VRAP25EN BIT(10)
 726 #define CM6206_REG3_MSEL1 BIT(9)
 727 #define CM6206_REG3_SPDIFI_RATE_44_1K BIT(0 << 7)
 728 #define CM6206_REG3_SPDIFI_RATE_48K BIT(2 << 7)
 729 #define CM6206_REG3_SPDIFI_RATE_32K BIT(3 << 7)
 730 #define CM6206_REG3_PINSEL BIT(6)
 731 #define CM6206_REG3_FOE BIT(5)
 732 #define CM6206_REG3_ROE BIT(4)
 733 #define CM6206_REG3_CBOE BIT(3)
 734 #define CM6206_REG3_LOSE BIT(2)
 735 #define CM6206_REG3_HPOE BIT(1)
 736 #define CM6206_REG3_SPDIFI_CANREC BIT(0)
 737 
 738 #define CM6206_REG5_DA_RSTN BIT(13)
 739 #define CM6206_REG5_AD_RSTN BIT(12)
 740 #define CM6206_REG5_SPDIFO_AD2SPDO BIT(12)
 741 #define CM6206_REG5_SPDIFO_SEL_FRONT (0 << 9)
 742 #define CM6206_REG5_SPDIFO_SEL_SIDE_SUR (1 << 9)
 743 #define CM6206_REG5_SPDIFO_SEL_CEN_LFE (2 << 9)
 744 #define CM6206_REG5_SPDIFO_SEL_REAR_SUR (3 << 9)
 745 #define CM6206_REG5_CODECM BIT(8)
 746 #define CM6206_REG5_EN_HPF BIT(7)
 747 #define CM6206_REG5_T_SEL_DSDA4 BIT(6)
 748 #define CM6206_REG5_T_SEL_DSDA3 BIT(5)
 749 #define CM6206_REG5_T_SEL_DSDA2 BIT(4)
 750 #define CM6206_REG5_T_SEL_DSDA1 BIT(3)
 751 #define CM6206_REG5_T_SEL_DSDAD_NORMAL 0
 752 #define CM6206_REG5_T_SEL_DSDAD_FRONT 4
 753 #define CM6206_REG5_T_SEL_DSDAD_S_SURROUND 5
 754 #define CM6206_REG5_T_SEL_DSDAD_CEN_LFE 6
 755 #define CM6206_REG5_T_SEL_DSDAD_R_SURROUND 7
 756 
 757 static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
 758 {
 759         int err  = 0, reg;
 760         int val[] = {
 761                 /*
 762                  * Values here are chosen based on sniffing USB traffic
 763                  * under Windows.
 764                  *
 765                  * REG0: DAC is master, sample rate 48kHz, no copyright
 766                  */
 767                 CM6206_REG0_SPDIFO_RATE_48K |
 768                 CM6206_REG0_SPDIFO_COPYRIGHT_NA,
 769                 /*
 770                  * REG1: PLL binary search enable, soft mute enable.
 771                  */
 772                 CM6206_REG1_PLLBIN_EN |
 773                 CM6206_REG1_SOFT_MUTE_EN,
 774                 /*
 775                  * REG2: enable output drivers,
 776                  * select front channels to the headphone output,
 777                  * then mute the headphone channels, run the MCU
 778                  * at 1.5 MHz.
 779                  */
 780                 CM6206_REG2_DRIVER_ON |
 781                 CM6206_REG2_HEADP_SEL_FRONT_CHANNELS |
 782                 CM6206_REG2_MUTE_HEADPHONE_RIGHT |
 783                 CM6206_REG2_MUTE_HEADPHONE_LEFT,
 784                 /*
 785                  * REG3: default flyspeed, set 2.5V mic bias
 786                  * enable all line out ports and enable SPDIF
 787                  */
 788                 CM6206_REG3_FLYSPEED_DEFAULT |
 789                 CM6206_REG3_VRAP25EN |
 790                 CM6206_REG3_FOE |
 791                 CM6206_REG3_ROE |
 792                 CM6206_REG3_CBOE |
 793                 CM6206_REG3_LOSE |
 794                 CM6206_REG3_HPOE |
 795                 CM6206_REG3_SPDIFI_CANREC,
 796                 /* REG4 is just a bunch of GPIO lines */
 797                 0x0000,
 798                 /* REG5: de-assert AD/DA reset signals */
 799                 CM6206_REG5_DA_RSTN |
 800                 CM6206_REG5_AD_RSTN };
 801 
 802         for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
 803                 err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
 804                 if (err < 0)
 805                         return err;
 806         }
 807 
 808         return err;
 809 }
 810 
 811 /* quirk for Plantronics GameCom 780 with CM6302 chip */
 812 static int snd_usb_gamecon780_boot_quirk(struct usb_device *dev)
 813 {
 814         /* set the initial volume and don't change; other values are either
 815          * too loud or silent due to firmware bug (bko#65251)
 816          */
 817         u8 buf[2] = { 0x74, 0xe3 };
 818         return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
 819                         USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
 820                         UAC_FU_VOLUME << 8, 9 << 8, buf, 2);
 821 }
 822 
 823 /*
 824  * Novation Twitch DJ controller
 825  * Focusrite Novation Saffire 6 USB audio card
 826  */
 827 static int snd_usb_novation_boot_quirk(struct usb_device *dev)
 828 {
 829         /* preemptively set up the device because otherwise the
 830          * raw MIDI endpoints are not active */
 831         usb_set_interface(dev, 0, 1);
 832         return 0;
 833 }
 834 
 835 /*
 836  * This call will put the synth in "USB send" mode, i.e it will send MIDI
 837  * messages through USB (this is disabled at startup). The synth will
 838  * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
 839  * sign on its LCD. Values here are chosen based on sniffing USB traffic
 840  * under Windows.
 841  */
 842 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
 843 {
 844         int err, actual_length;
 845         /* "midi send" enable */
 846         static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
 847         void *buf;
 848 
 849         if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05)))
 850                 return -EINVAL;
 851         buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
 852         if (!buf)
 853                 return -ENOMEM;
 854         err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
 855                         ARRAY_SIZE(seq), &actual_length, 1000);
 856         kfree(buf);
 857         if (err < 0)
 858                 return err;
 859 
 860         return 0;
 861 }
 862 
 863 /*
 864  * Some sound cards from Native Instruments are in fact compliant to the USB
 865  * audio standard of version 2 and other approved USB standards, even though
 866  * they come up as vendor-specific device when first connected.
 867  *
 868  * However, they can be told to come up with a new set of descriptors
 869  * upon their next enumeration, and the interfaces announced by the new
 870  * descriptors will then be handled by the kernel's class drivers. As the
 871  * product ID will also change, no further checks are required.
 872  */
 873 
 874 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
 875 {
 876         int ret;
 877 
 878         if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
 879                 return -EINVAL;
 880         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 881                                   0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 882                                   1, 0, NULL, 0, 1000);
 883 
 884         if (ret < 0)
 885                 return ret;
 886 
 887         usb_reset_device(dev);
 888 
 889         /* return -EAGAIN, so the creation of an audio interface for this
 890          * temporary device is aborted. The device will reconnect with a
 891          * new product ID */
 892         return -EAGAIN;
 893 }
 894 
 895 static void mbox2_setup_48_24_magic(struct usb_device *dev)
 896 {
 897         u8 srate[3];
 898         u8 temp[12];
 899 
 900         /* Choose 48000Hz permanently */
 901         srate[0] = 0x80;
 902         srate[1] = 0xbb;
 903         srate[2] = 0x00;
 904 
 905         /* Send the magic! */
 906         snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
 907                 0x01, 0x22, 0x0100, 0x0085, &temp, 0x0003);
 908         snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
 909                 0x81, 0xa2, 0x0100, 0x0085, &srate, 0x0003);
 910         snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
 911                 0x81, 0xa2, 0x0100, 0x0086, &srate, 0x0003);
 912         snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
 913                 0x81, 0xa2, 0x0100, 0x0003, &srate, 0x0003);
 914         return;
 915 }
 916 
 917 /* Digidesign Mbox 2 needs to load firmware onboard
 918  * and driver must wait a few seconds for initialisation.
 919  */
 920 
 921 #define MBOX2_FIRMWARE_SIZE    646
 922 #define MBOX2_BOOT_LOADING     0x01 /* Hard coded into the device */
 923 #define MBOX2_BOOT_READY       0x02 /* Hard coded into the device */
 924 
 925 static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
 926 {
 927         struct usb_host_config *config = dev->actconfig;
 928         int err;
 929         u8 bootresponse[0x12];
 930         int fwsize;
 931         int count;
 932 
 933         fwsize = le16_to_cpu(get_cfg_desc(config)->wTotalLength);
 934 
 935         if (fwsize != MBOX2_FIRMWARE_SIZE) {
 936                 dev_err(&dev->dev, "Invalid firmware size=%d.\n", fwsize);
 937                 return -ENODEV;
 938         }
 939 
 940         dev_dbg(&dev->dev, "Sending Digidesign Mbox 2 boot sequence...\n");
 941 
 942         count = 0;
 943         bootresponse[0] = MBOX2_BOOT_LOADING;
 944         while ((bootresponse[0] == MBOX2_BOOT_LOADING) && (count < 10)) {
 945                 msleep(500); /* 0.5 second delay */
 946                 snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
 947                         /* Control magic - load onboard firmware */
 948                         0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012);
 949                 if (bootresponse[0] == MBOX2_BOOT_READY)
 950                         break;
 951                 dev_dbg(&dev->dev, "device not ready, resending boot sequence...\n");
 952                 count++;
 953         }
 954 
 955         if (bootresponse[0] != MBOX2_BOOT_READY) {
 956                 dev_err(&dev->dev, "Unknown bootresponse=%d, or timed out, ignoring device.\n", bootresponse[0]);
 957                 return -ENODEV;
 958         }
 959 
 960         dev_dbg(&dev->dev, "device initialised!\n");
 961 
 962         err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
 963                 &dev->descriptor, sizeof(dev->descriptor));
 964         config = dev->actconfig;
 965         if (err < 0)
 966                 dev_dbg(&dev->dev, "error usb_get_descriptor: %d\n", err);
 967 
 968         err = usb_reset_configuration(dev);
 969         if (err < 0)
 970                 dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err);
 971         dev_dbg(&dev->dev, "mbox2_boot: new boot length = %d\n",
 972                 le16_to_cpu(get_cfg_desc(config)->wTotalLength));
 973 
 974         mbox2_setup_48_24_magic(dev);
 975 
 976         dev_info(&dev->dev, "Digidesign Mbox 2: 24bit 48kHz");
 977 
 978         return 0; /* Successful boot */
 979 }
 980 
 981 static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
 982 {
 983         int err;
 984 
 985         dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
 986 
 987         if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
 988                 return -EINVAL;
 989         /* If the Axe-Fx III has not fully booted, it will timeout when trying
 990          * to enable the audio streaming interface. A more generous timeout is
 991          * used here to detect when the Axe-Fx III has finished booting as the
 992          * set interface message will be acked once it has
 993          */
 994         err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 995                                 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
 996                                 1, 1, NULL, 0, 120000);
 997         if (err < 0) {
 998                 dev_err(&dev->dev,
 999                         "failed waiting for Axe-Fx III to boot: %d\n", err);
1000                 return err;
1001         }
1002 
1003         dev_dbg(&dev->dev, "Axe-Fx III is now ready\n");
1004 
1005         err = usb_set_interface(dev, 1, 0);
1006         if (err < 0)
1007                 dev_dbg(&dev->dev,
1008                         "error stopping Axe-Fx III interface: %d\n", err);
1009 
1010         return 0;
1011 }
1012 
1013 
1014 #define MICROBOOK_BUF_SIZE 128
1015 
1016 static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
1017                                                 int buf_size, int *length)
1018 {
1019         int err, actual_length;
1020 
1021         if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x01)))
1022                 return -EINVAL;
1023         err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
1024                                 &actual_length, 1000);
1025         if (err < 0)
1026                 return err;
1027 
1028         print_hex_dump(KERN_DEBUG, "MicroBookII snd: ", DUMP_PREFIX_NONE, 16, 1,
1029                        buf, actual_length, false);
1030 
1031         memset(buf, 0, buf_size);
1032 
1033         if (snd_usb_pipe_sanity_check(dev, usb_rcvintpipe(dev, 0x82)))
1034                 return -EINVAL;
1035         err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
1036                                 &actual_length, 1000);
1037         if (err < 0)
1038                 return err;
1039 
1040         print_hex_dump(KERN_DEBUG, "MicroBookII rcv: ", DUMP_PREFIX_NONE, 16, 1,
1041                        buf, actual_length, false);
1042 
1043         *length = actual_length;
1044         return 0;
1045 }
1046 
1047 static int snd_usb_motu_microbookii_boot_quirk(struct usb_device *dev)
1048 {
1049         int err, actual_length, poll_attempts = 0;
1050         static const u8 set_samplerate_seq[] = { 0x00, 0x00, 0x00, 0x00,
1051                                                  0x00, 0x00, 0x0b, 0x14,
1052                                                  0x00, 0x00, 0x00, 0x01 };
1053         static const u8 poll_ready_seq[] = { 0x00, 0x04, 0x00, 0x00,
1054                                              0x00, 0x00, 0x0b, 0x18 };
1055         u8 *buf = kzalloc(MICROBOOK_BUF_SIZE, GFP_KERNEL);
1056 
1057         if (!buf)
1058                 return -ENOMEM;
1059 
1060         dev_info(&dev->dev, "Waiting for MOTU Microbook II to boot up...\n");
1061 
1062         /* First we tell the device which sample rate to use. */
1063         memcpy(buf, set_samplerate_seq, sizeof(set_samplerate_seq));
1064         actual_length = sizeof(set_samplerate_seq);
1065         err = snd_usb_motu_microbookii_communicate(dev, buf, MICROBOOK_BUF_SIZE,
1066                                                    &actual_length);
1067 
1068         if (err < 0) {
1069                 dev_err(&dev->dev,
1070                         "failed setting the sample rate for Motu MicroBook II: %d\n",
1071                         err);
1072                 goto free_buf;
1073         }
1074 
1075         /* Then we poll every 100 ms until the device informs of its readiness. */
1076         while (true) {
1077                 if (++poll_attempts > 100) {
1078                         dev_err(&dev->dev,
1079                                 "failed booting Motu MicroBook II: timeout\n");
1080                         err = -ENODEV;
1081                         goto free_buf;
1082                 }
1083 
1084                 memset(buf, 0, MICROBOOK_BUF_SIZE);
1085                 memcpy(buf, poll_ready_seq, sizeof(poll_ready_seq));
1086 
1087                 actual_length = sizeof(poll_ready_seq);
1088                 err = snd_usb_motu_microbookii_communicate(
1089                         dev, buf, MICROBOOK_BUF_SIZE, &actual_length);
1090                 if (err < 0) {
1091                         dev_err(&dev->dev,
1092                                 "failed booting Motu MicroBook II: communication error %d\n",
1093                                 err);
1094                         goto free_buf;
1095                 }
1096 
1097                 /* the device signals its readiness through a message of the
1098                  * form
1099                  *           XX 06 00 00 00 00 0b 18  00 00 00 01
1100                  * If the device is not yet ready to accept audio data, the
1101                  * last byte of that sequence is 00.
1102                  */
1103                 if (actual_length == 12 && buf[actual_length - 1] == 1)
1104                         break;
1105 
1106                 msleep(100);
1107         }
1108 
1109         dev_info(&dev->dev, "MOTU MicroBook II ready\n");
1110 
1111 free_buf:
1112         kfree(buf);
1113         return err;
1114 }
1115 
1116 static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev)
1117 {
1118         int ret;
1119 
1120         if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
1121                 return -EINVAL;
1122         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1123                               1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1124                               0x0, 0, NULL, 0, 1000);
1125 
1126         if (ret < 0)
1127                 return ret;
1128 
1129         msleep(2000);
1130 
1131         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1132                               1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1133                               0x20, 0, NULL, 0, 1000);
1134 
1135         if (ret < 0)
1136                 return ret;
1137 
1138         return 0;
1139 }
1140 
1141 /*
1142  * Setup quirks
1143  */
1144 #define MAUDIO_SET              0x01 /* parse device_setup */
1145 #define MAUDIO_SET_COMPATIBLE   0x80 /* use only "win-compatible" interfaces */
1146 #define MAUDIO_SET_DTS          0x02 /* enable DTS Digital Output */
1147 #define MAUDIO_SET_96K          0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
1148 #define MAUDIO_SET_24B          0x08 /* 24bits sample if set, 16bits otherwise */
1149 #define MAUDIO_SET_DI           0x10 /* enable Digital Input */
1150 #define MAUDIO_SET_MASK         0x1f /* bit mask for setup value */
1151 #define MAUDIO_SET_24B_48K_DI    0x19 /* 24bits+48KHz+Digital Input */
1152 #define MAUDIO_SET_24B_48K_NOTDI 0x09 /* 24bits+48KHz+No Digital Input */
1153 #define MAUDIO_SET_16B_48K_DI    0x11 /* 16bits+48KHz+Digital Input */
1154 #define MAUDIO_SET_16B_48K_NOTDI 0x01 /* 16bits+48KHz+No Digital Input */
1155 
1156 static int quattro_skip_setting_quirk(struct snd_usb_audio *chip,
1157                                       int iface, int altno)
1158 {
1159         /* Reset ALL ifaces to 0 altsetting.
1160          * Call it for every possible altsetting of every interface.
1161          */
1162         usb_set_interface(chip->dev, iface, 0);
1163         if (chip->setup & MAUDIO_SET) {
1164                 if (chip->setup & MAUDIO_SET_COMPATIBLE) {
1165                         if (iface != 1 && iface != 2)
1166                                 return 1; /* skip all interfaces but 1 and 2 */
1167                 } else {
1168                         unsigned int mask;
1169                         if (iface == 1 || iface == 2)
1170                                 return 1; /* skip interfaces 1 and 2 */
1171                         if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
1172                                 return 1; /* skip this altsetting */
1173                         mask = chip->setup & MAUDIO_SET_MASK;
1174                         if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
1175                                 return 1; /* skip this altsetting */
1176                         if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
1177                                 return 1; /* skip this altsetting */
1178                         if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 4)
1179                                 return 1; /* skip this altsetting */
1180                 }
1181         }
1182         usb_audio_dbg(chip,
1183                     "using altsetting %d for interface %d config %d\n",
1184                     altno, iface, chip->setup);
1185         return 0; /* keep this altsetting */
1186 }
1187 
1188 static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
1189                                          int iface,
1190                                          int altno)
1191 {
1192         /* Reset ALL ifaces to 0 altsetting.
1193          * Call it for every possible altsetting of every interface.
1194          */
1195         usb_set_interface(chip->dev, iface, 0);
1196 
1197         if (chip->setup & MAUDIO_SET) {
1198                 unsigned int mask;
1199                 if ((chip->setup & MAUDIO_SET_DTS) && altno != 6)
1200                         return 1; /* skip this altsetting */
1201                 if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
1202                         return 1; /* skip this altsetting */
1203                 mask = chip->setup & MAUDIO_SET_MASK;
1204                 if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
1205                         return 1; /* skip this altsetting */
1206                 if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
1207                         return 1; /* skip this altsetting */
1208                 if (mask == MAUDIO_SET_16B_48K_DI && altno != 4)
1209                         return 1; /* skip this altsetting */
1210                 if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 5)
1211                         return 1; /* skip this altsetting */
1212         }
1213 
1214         return 0; /* keep this altsetting */
1215 }
1216 
1217 static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
1218                                            int iface, int altno)
1219 {
1220         /* Reset ALL ifaces to 0 altsetting.
1221          * Call it for every possible altsetting of every interface.
1222          */
1223         usb_set_interface(chip->dev, iface, 0);
1224 
1225         /* possible configuration where both inputs and only one output is
1226          *used is not supported by the current setup
1227          */
1228         if (chip->setup & (MAUDIO_SET | MAUDIO_SET_24B)) {
1229                 if (chip->setup & MAUDIO_SET_96K) {
1230                         if (altno != 3 && altno != 6)
1231                                 return 1;
1232                 } else if (chip->setup & MAUDIO_SET_DI) {
1233                         if (iface == 4)
1234                                 return 1; /* no analog input */
1235                         if (altno != 2 && altno != 5)
1236                                 return 1; /* enable only altsets 2 and 5 */
1237                 } else {
1238                         if (iface == 5)
1239                                 return 1; /* disable digialt input */
1240                         if (altno != 2 && altno != 5)
1241                                 return 1; /* enalbe only altsets 2 and 5 */
1242                 }
1243         } else {
1244                 /* keep only 16-Bit mode */
1245                 if (altno != 1)
1246                         return 1;
1247         }
1248 
1249         usb_audio_dbg(chip,
1250                     "using altsetting %d for interface %d config %d\n",
1251                     altno, iface, chip->setup);
1252         return 0; /* keep this altsetting */
1253 }
1254 
1255 int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
1256                                   int iface,
1257                                   int altno)
1258 {
1259         /* audiophile usb: skip altsets incompatible with device_setup */
1260         if (chip->usb_id == USB_ID(0x0763, 0x2003))
1261                 return audiophile_skip_setting_quirk(chip, iface, altno);
1262         /* quattro usb: skip altsets incompatible with device_setup */
1263         if (chip->usb_id == USB_ID(0x0763, 0x2001))
1264                 return quattro_skip_setting_quirk(chip, iface, altno);
1265         /* fasttrackpro usb: skip altsets incompatible with device_setup */
1266         if (chip->usb_id == USB_ID(0x0763, 0x2012))
1267                 return fasttrackpro_skip_setting_quirk(chip, iface, altno);
1268 
1269         return 0;
1270 }
1271 
1272 int snd_usb_apply_boot_quirk(struct usb_device *dev,
1273                              struct usb_interface *intf,
1274                              const struct snd_usb_audio_quirk *quirk,
1275                              unsigned int id)
1276 {
1277         switch (id) {
1278         case USB_ID(0x041e, 0x3000):
1279                 /* SB Extigy needs special boot-up sequence */
1280                 /* if more models come, this will go to the quirk list. */
1281                 return snd_usb_extigy_boot_quirk(dev, intf);
1282 
1283         case USB_ID(0x041e, 0x3020):
1284                 /* SB Audigy 2 NX needs its own boot-up magic, too */
1285                 return snd_usb_audigy2nx_boot_quirk(dev);
1286 
1287         case USB_ID(0x10f5, 0x0200):
1288                 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
1289                 return snd_usb_cm106_boot_quirk(dev);
1290 
1291         case USB_ID(0x0d8c, 0x0102):
1292                 /* C-Media CM6206 / CM106-Like Sound Device */
1293         case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
1294                 return snd_usb_cm6206_boot_quirk(dev);
1295 
1296         case USB_ID(0x0dba, 0x3000):
1297                 /* Digidesign Mbox 2 */
1298                 return snd_usb_mbox2_boot_quirk(dev);
1299 
1300         case USB_ID(0x1235, 0x0010): /* Focusrite Novation Saffire 6 USB */
1301         case USB_ID(0x1235, 0x0018): /* Focusrite Novation Twitch */
1302                 return snd_usb_novation_boot_quirk(dev);
1303 
1304         case USB_ID(0x133e, 0x0815):
1305                 /* Access Music VirusTI Desktop */
1306                 return snd_usb_accessmusic_boot_quirk(dev);
1307 
1308         case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
1309         case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
1310         case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
1311                 return snd_usb_nativeinstruments_boot_quirk(dev);
1312         case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
1313                 return snd_usb_fasttrackpro_boot_quirk(dev);
1314         case USB_ID(0x047f, 0xc010): /* Plantronics Gamecom 780 */
1315                 return snd_usb_gamecon780_boot_quirk(dev);
1316         case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx 3 */
1317                 return snd_usb_axefx3_boot_quirk(dev);
1318         case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II */
1319                 return snd_usb_motu_microbookii_boot_quirk(dev);
1320         }
1321 
1322         return 0;
1323 }
1324 
1325 int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
1326                                   struct usb_interface *intf,
1327                                   const struct snd_usb_audio_quirk *quirk,
1328                                   unsigned int id)
1329 {
1330         switch (id) {
1331         case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
1332                 return snd_usb_motu_m_series_boot_quirk(dev);
1333         }
1334 
1335         return 0;
1336 }
1337 
1338 /*
1339  * check if the device uses big-endian samples
1340  */
1341 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
1342 {
1343         /* it depends on altsetting whether the device is big-endian or not */
1344         switch (chip->usb_id) {
1345         case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
1346                 if (fp->altsetting == 2 || fp->altsetting == 3 ||
1347                         fp->altsetting == 5 || fp->altsetting == 6)
1348                         return 1;
1349                 break;
1350         case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
1351                 if (chip->setup == 0x00 ||
1352                         fp->altsetting == 1 || fp->altsetting == 2 ||
1353                         fp->altsetting == 3)
1354                         return 1;
1355                 break;
1356         case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro */
1357                 if (fp->altsetting == 2 || fp->altsetting == 3 ||
1358                         fp->altsetting == 5 || fp->altsetting == 6)
1359                         return 1;
1360                 break;
1361         }
1362         return 0;
1363 }
1364 
1365 /*
1366  * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
1367  * not for interface.
1368  */
1369 
1370 enum {
1371         EMU_QUIRK_SR_44100HZ = 0,
1372         EMU_QUIRK_SR_48000HZ,
1373         EMU_QUIRK_SR_88200HZ,
1374         EMU_QUIRK_SR_96000HZ,
1375         EMU_QUIRK_SR_176400HZ,
1376         EMU_QUIRK_SR_192000HZ
1377 };
1378 
1379 static void set_format_emu_quirk(struct snd_usb_substream *subs,
1380                                  struct audioformat *fmt)
1381 {
1382         unsigned char emu_samplerate_id = 0;
1383 
1384         /* When capture is active
1385          * sample rate shouldn't be changed
1386          * by playback substream
1387          */
1388         if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
1389                 if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
1390                         return;
1391         }
1392 
1393         switch (fmt->rate_min) {
1394         case 48000:
1395                 emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
1396                 break;
1397         case 88200:
1398                 emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
1399                 break;
1400         case 96000:
1401                 emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
1402                 break;
1403         case 176400:
1404                 emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
1405                 break;
1406         case 192000:
1407                 emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
1408                 break;
1409         default:
1410                 emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
1411                 break;
1412         }
1413         snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
1414         subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0;
1415 }
1416 
1417 void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
1418                               struct audioformat *fmt)
1419 {
1420         switch (subs->stream->chip->usb_id) {
1421         case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
1422         case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
1423         case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
1424         case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
1425                 set_format_emu_quirk(subs, fmt);
1426                 break;
1427         }
1428 }
1429 
1430 bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
1431 {
1432         /* devices which do not support reading the sample rate. */
1433         switch (chip->usb_id) {
1434         case USB_ID(0x041E, 0x4080): /* Creative Live Cam VF0610 */
1435         case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
1436         case USB_ID(0x0556, 0x0014): /* Phoenix Audio TMX320VC */
1437         case USB_ID(0x05A3, 0x9420): /* ELP HD USB Camera */
1438         case USB_ID(0x05a7, 0x1020): /* Bose Companion 5 */
1439         case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
1440         case USB_ID(0x1395, 0x740a): /* Sennheiser DECT */
1441         case USB_ID(0x1901, 0x0191): /* GE B850V3 CP2114 audio interface */
1442         case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
1443         case USB_ID(0x2912, 0x30c8): /* Audioengine D1 */
1444                 return true;
1445         }
1446 
1447         /* devices of these vendors don't support reading rate, either */
1448         switch (USB_ID_VENDOR(chip->usb_id)) {
1449         case 0x045E: /* MS Lifecam */
1450         case 0x047F: /* Plantronics */
1451         case 0x1de7: /* Phoenix Audio */
1452                 return true;
1453         }
1454 
1455         return false;
1456 }
1457 
1458 /* ITF-USB DSD based DACs need a vendor cmd to switch
1459  * between PCM and native DSD mode
1460  */
1461 static bool is_itf_usb_dsd_dac(unsigned int id)
1462 {
1463         switch (id) {
1464         case USB_ID(0x154e, 0x1003): /* Denon DA-300USB */
1465         case USB_ID(0x154e, 0x3005): /* Marantz HD-DAC1 */
1466         case USB_ID(0x154e, 0x3006): /* Marantz SA-14S1 */
1467         case USB_ID(0x1852, 0x5065): /* Luxman DA-06 */
1468         case USB_ID(0x0644, 0x8043): /* TEAC UD-501/UD-501V2/UD-503/NT-503 */
1469         case USB_ID(0x0644, 0x8044): /* Esoteric D-05X */
1470         case USB_ID(0x0644, 0x804a): /* TEAC UD-301 */
1471                 return true;
1472         }
1473         return false;
1474 }
1475 
1476 int snd_usb_select_mode_quirk(struct snd_usb_substream *subs,
1477                               struct audioformat *fmt)
1478 {
1479         struct usb_device *dev = subs->dev;
1480         int err;
1481 
1482         if (is_itf_usb_dsd_dac(subs->stream->chip->usb_id)) {
1483                 /* First switch to alt set 0, otherwise the mode switch cmd
1484                  * will not be accepted by the DAC
1485                  */
1486                 err = usb_set_interface(dev, fmt->iface, 0);
1487                 if (err < 0)
1488                         return err;
1489 
1490                 msleep(20); /* Delay needed after setting the interface */
1491 
1492                 /* Vendor mode switch cmd is required. */
1493                 if (fmt->formats & SNDRV_PCM_FMTBIT_DSD_U32_BE) {
1494                         /* DSD mode (DSD_U32) requested */
1495                         err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
1496                                               USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
1497                                               1, 1, NULL, 0);
1498                         if (err < 0)
1499                                 return err;
1500 
1501                 } else {
1502                         /* PCM or DOP mode (S32) requested */
1503                         /* PCM mode (S16) requested */
1504                         err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
1505                                               USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
1506                                               0, 1, NULL, 0);
1507                         if (err < 0)
1508                                 return err;
1509 
1510                 }
1511                 msleep(20);
1512         }
1513         return 0;
1514 }
1515 
1516 void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
1517 {
1518         /*
1519          * "Playback Design" products send bogus feedback data at the start
1520          * of the stream. Ignore them.
1521          */
1522         if (USB_ID_VENDOR(ep->chip->usb_id) == 0x23ba &&
1523             ep->type == SND_USB_ENDPOINT_TYPE_SYNC)
1524                 ep->skip_packets = 4;
1525 
1526         /*
1527          * M-Audio Fast Track C400/C600 - when packets are not skipped, real
1528          * world latency varies by approx. +/- 50 frames (at 96KHz) each time
1529          * the stream is (re)started. When skipping packets 16 at endpoint
1530          * start up, the real world latency is stable within +/- 1 frame (also
1531          * across power cycles).
1532          */
1533         if ((ep->chip->usb_id == USB_ID(0x0763, 0x2030) ||
1534              ep->chip->usb_id == USB_ID(0x0763, 0x2031)) &&
1535             ep->type == SND_USB_ENDPOINT_TYPE_DATA)
1536                 ep->skip_packets = 16;
1537 
1538         /* Work around devices that report unreasonable feedback data */
1539         if ((ep->chip->usb_id == USB_ID(0x0644, 0x8038) ||  /* TEAC UD-H01 */
1540              ep->chip->usb_id == USB_ID(0x1852, 0x5034)) && /* T+A Dac8 */
1541             ep->syncmaxsize == 4)
1542                 ep->tenor_fb_quirk = 1;
1543 }
1544 
1545 void snd_usb_set_interface_quirk(struct usb_device *dev)
1546 {
1547         struct snd_usb_audio *chip = dev_get_drvdata(&dev->dev);
1548 
1549         if (!chip)
1550                 return;
1551         /*
1552          * "Playback Design" products need a 50ms delay after setting the
1553          * USB interface.
1554          */
1555         switch (USB_ID_VENDOR(chip->usb_id)) {
1556         case 0x23ba: /* Playback Design */
1557         case 0x0644: /* TEAC Corp. */
1558                 msleep(50);
1559                 break;
1560         }
1561 }
1562 
1563 /* quirk applied after snd_usb_ctl_msg(); not applied during boot quirks */
1564 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
1565                            __u8 request, __u8 requesttype, __u16 value,
1566                            __u16 index, void *data, __u16 size)
1567 {
1568         struct snd_usb_audio *chip = dev_get_drvdata(&dev->dev);
1569 
1570         if (!chip)
1571                 return;
1572         /*
1573          * "Playback Design" products need a 20ms delay after each
1574          * class compliant request
1575          */
1576         if (USB_ID_VENDOR(chip->usb_id) == 0x23ba &&
1577             (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
1578                 msleep(20);
1579 
1580         /*
1581          * "TEAC Corp." products need a 20ms delay after each
1582          * class compliant request
1583          */
1584         if (USB_ID_VENDOR(chip->usb_id) == 0x0644 &&
1585             (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
1586                 msleep(20);
1587 
1588         /* ITF-USB DSD based DACs functionality need a delay
1589          * after each class compliant request
1590          */
1591         if (is_itf_usb_dsd_dac(chip->usb_id)
1592             && (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
1593                 msleep(20);
1594 
1595         /* Zoom R16/24, Logitech H650e, Jabra 550a, Kingston HyperX needs a tiny
1596          * delay here, otherwise requests like get/set frequency return as
1597          * failed despite actually succeeding.
1598          */
1599         if ((chip->usb_id == USB_ID(0x1686, 0x00dd) ||
1600              chip->usb_id == USB_ID(0x046d, 0x0a46) ||
1601              chip->usb_id == USB_ID(0x0b0e, 0x0349) ||
1602              chip->usb_id == USB_ID(0x0951, 0x16ad)) &&
1603             (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
1604                 usleep_range(1000, 2000);
1605 }
1606 
1607 /*
1608  * snd_usb_interface_dsd_format_quirks() is called from format.c to
1609  * augment the PCM format bit-field for DSD types. The UAC standards
1610  * don't have a designated bit field to denote DSD-capable interfaces,
1611  * hence all hardware that is known to support this format has to be
1612  * listed here.
1613  */
1614 u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
1615                                         struct audioformat *fp,
1616                                         unsigned int sample_bytes)
1617 {
1618         struct usb_interface *iface;
1619 
1620         /* Playback Designs */
1621         if (USB_ID_VENDOR(chip->usb_id) == 0x23ba &&
1622             USB_ID_PRODUCT(chip->usb_id) < 0x0110) {
1623                 switch (fp->altsetting) {
1624                 case 1:
1625                         fp->dsd_dop = true;
1626                         return SNDRV_PCM_FMTBIT_DSD_U16_LE;
1627                 case 2:
1628                         fp->dsd_bitrev = true;
1629                         return SNDRV_PCM_FMTBIT_DSD_U8;
1630                 case 3:
1631                         fp->dsd_bitrev = true;
1632                         return SNDRV_PCM_FMTBIT_DSD_U16_LE;
1633                 }
1634         }
1635 
1636         /* XMOS based USB DACs */
1637         switch (chip->usb_id) {
1638         case USB_ID(0x1511, 0x0037): /* AURALiC VEGA */
1639         case USB_ID(0x2522, 0x0012): /* LH Labs VI DAC Infinity */
1640         case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */
1641                 if (fp->altsetting == 2)
1642                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1643                 break;
1644 
1645         case USB_ID(0x0d8c, 0x0316): /* Hegel HD12 DSD */
1646         case USB_ID(0x10cb, 0x0103): /* The Bit Opus #3; with fp->dsd_raw */
1647         case USB_ID(0x16d0, 0x06b2): /* NuPrime DAC-10 */
1648         case USB_ID(0x16d0, 0x09dd): /* Encore mDSD */
1649         case USB_ID(0x16d0, 0x0733): /* Furutech ADL Stratos */
1650         case USB_ID(0x16d0, 0x09db): /* NuPrime Audio DAC-9 */
1651         case USB_ID(0x1db5, 0x0003): /* Bryston BDA3 */
1652         case USB_ID(0x22e1, 0xca01): /* HDTA Serenade DSD */
1653         case USB_ID(0x249c, 0x9326): /* M2Tech Young MkIII */
1654         case USB_ID(0x2616, 0x0106): /* PS Audio NuWave DAC */
1655         case USB_ID(0x2622, 0x0041): /* Audiolab M-DAC+ */
1656         case USB_ID(0x27f7, 0x3002): /* W4S DAC-2v2SE */
1657         case USB_ID(0x29a2, 0x0086): /* Mutec MC3+ USB */
1658         case USB_ID(0x6b42, 0x0042): /* MSB Technology */
1659                 if (fp->altsetting == 3)
1660                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1661                 break;
1662 
1663         /* Amanero Combo384 USB based DACs with native DSD support */
1664         case USB_ID(0x16d0, 0x071a):  /* Amanero - Combo384 */
1665         case USB_ID(0x2ab6, 0x0004):  /* T+A DAC8DSD-V2.0, MP1000E-V2.0, MP2000R-V2.0, MP2500R-V2.0, MP3100HV-V2.0 */
1666         case USB_ID(0x2ab6, 0x0005):  /* T+A USB HD Audio 1 */
1667         case USB_ID(0x2ab6, 0x0006):  /* T+A USB HD Audio 2 */
1668                 if (fp->altsetting == 2) {
1669                         switch (le16_to_cpu(chip->dev->descriptor.bcdDevice)) {
1670                         case 0x199:
1671                                 return SNDRV_PCM_FMTBIT_DSD_U32_LE;
1672                         case 0x19b:
1673                         case 0x203:
1674                                 return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1675                         default:
1676                                 break;
1677                         }
1678                 }
1679                 break;
1680         case USB_ID(0x16d0, 0x0a23):
1681                 if (fp->altsetting == 2)
1682                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1683                 break;
1684 
1685         default:
1686                 break;
1687         }
1688 
1689         /* ITF-USB DSD based DACs */
1690         if (is_itf_usb_dsd_dac(chip->usb_id)) {
1691                 iface = usb_ifnum_to_if(chip->dev, fp->iface);
1692 
1693                 /* Altsetting 2 support native DSD if the num of altsets is
1694                  * three (0-2),
1695                  * Altsetting 3 support native DSD if the num of altsets is
1696                  * four (0-3).
1697                  */
1698                 if (fp->altsetting == iface->num_altsetting - 1)
1699                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1700         }
1701 
1702         /* Mostly generic method to detect many DSD-capable implementations -
1703          * from XMOS/Thesycon
1704          */
1705         switch (USB_ID_VENDOR(chip->usb_id)) {
1706         case 0x152a:  /* Thesycon devices */
1707         case 0x20b1:  /* XMOS based devices */
1708         case 0x22d9:  /* Oppo */
1709         case 0x23ba:  /* Playback Designs */
1710         case 0x25ce:  /* Mytek devices */
1711         case 0x278b:  /* Rotel? */
1712         case 0x292b:  /* Gustard/Ess based devices */
1713         case 0x2ab6:  /* T+A devices */
1714         case 0x3842:  /* EVGA */
1715         case 0xc502:  /* HiBy devices */
1716                 if (fp->dsd_raw)
1717                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1718                 break;
1719         default:
1720                 break;
1721 
1722         }
1723 
1724         return 0;
1725 }
1726 
1727 void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
1728                                           struct audioformat *fp,
1729                                           int stream)
1730 {
1731         switch (chip->usb_id) {
1732         case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
1733                 /* Optoplay sets the sample rate attribute although
1734                  * it seems not supporting it in fact.
1735                  */
1736                 fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
1737                 break;
1738         case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
1739         case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
1740                 /* doesn't set the sample rate attribute, but supports it */
1741                 fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
1742                 break;
1743         case USB_ID(0x0763, 0x2001):  /* M-Audio Quattro USB */
1744         case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
1745         case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
1746         case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
1747                                         an older model 77d:223) */
1748         /*
1749          * plantronics headset and Griffin iMic have set adaptive-in
1750          * although it's really not...
1751          */
1752                 fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
1753                 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1754                         fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
1755                 else
1756                         fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
1757                 break;
1758         }
1759 }
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root/sound/usb/quirks.c

DEFINITIONS
