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 #include "stream.h"
  38
  39 /*
  40  * handle the quirks for the contained interfaces
  41  */
  42 static int create_composite_quirk(struct snd_usb_audio *chip,
  43                                   struct usb_interface *iface,
  44                                   struct usb_driver *driver,
  45                                   const struct snd_usb_audio_quirk *quirk)
  46 {
  47         int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
  48         int err;
  49
  50         for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
  51                 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
  52                 if (!iface)
  53                         continue;
  54                 if (quirk->ifnum != probed_ifnum &&
  55                     usb_interface_claimed(iface))
  56                         continue;
  57                 err = snd_usb_create_quirk(chip, iface, driver, quirk);
  58                 if (err < 0)
  59                         return err;
  60                 if (quirk->ifnum != probed_ifnum)
  61                         usb_driver_claim_interface(driver, iface, (void *)-1L);
  62         }
  63         return 0;
  64 }
  65
  66 static int ignore_interface_quirk(struct snd_usb_audio *chip,
  67                                   struct usb_interface *iface,
  68                                   struct usb_driver *driver,
  69                                   const struct snd_usb_audio_quirk *quirk)
  70 {
  71         return 0;
  72 }
  73
  74
  75 /*
  76  * Allow alignment on audio sub-slot (channel samples) rather than
  77  * on audio slots (audio frames)
  78  */
  79 static int create_align_transfer_quirk(struct snd_usb_audio *chip,
  80                                        struct usb_interface *iface,
  81                                        struct usb_driver *driver,
  82                                        const struct snd_usb_audio_quirk *quirk)
  83 {
  84         chip->txfr_quirk = 1;
  85         return 1;       /* Continue with creating streams and mixer */
  86 }
  87
  88 static int create_any_midi_quirk(struct snd_usb_audio *chip,
  89                                  struct usb_interface *intf,
  90                                  struct usb_driver *driver,
  91                                  const struct snd_usb_audio_quirk *quirk)
  92 {
  93         return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
  94 }
  95
  96 /*
  97  * create a stream for an interface with proper descriptors
  98  */
  99 static int create_standard_audio_quirk(struct snd_usb_audio *chip,
 100                                        struct usb_interface *iface,
 101                                        struct usb_driver *driver,
 102                                        const struct snd_usb_audio_quirk *quirk)
 103 {
 104         struct usb_host_interface *alts;
 105         struct usb_interface_descriptor *altsd;
 106         int err;
 107
 108         alts = &iface->altsetting[0];
 109         altsd = get_iface_desc(alts);
 110         err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber);
 111         if (err < 0) {
 112                 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
 113                            altsd->bInterfaceNumber, err);
 114                 return err;
 115         }
 116         /* reset the current interface */
 117         usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
 118         return 0;
 119 }
 120
 121 /*
 122  * create a stream for an endpoint/altsetting without proper descriptors
 123  */
 124 static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
 125                                      struct usb_interface *iface,
 126                                      struct usb_driver *driver,
 127                                      const struct snd_usb_audio_quirk *quirk)
 128 {
 129         struct audioformat *fp;
 130         struct usb_host_interface *alts;
 131         int stream, err;
 132         unsigned *rate_table = NULL;
 133
 134         fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
 135         if (!fp) {
 136                 snd_printk(KERN_ERR "cannot memdup\n");
 137                 return -ENOMEM;
 138         }
 139         if (fp->nr_rates > MAX_NR_RATES) {
 140                 kfree(fp);
 141                 return -EINVAL;
 142         }
 143         if (fp->nr_rates > 0) {
 144                 rate_table = kmemdup(fp->rate_table,
 145                                      sizeof(int) * fp->nr_rates, GFP_KERNEL);
 146                 if (!rate_table) {
 147                         kfree(fp);
 148                         return -ENOMEM;
 149                 }
 150                 fp->rate_table = rate_table;
 151         }
 152
 153         stream = (fp->endpoint & USB_DIR_IN)
 154                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 155         err = snd_usb_add_audio_stream(chip, stream, fp);
 156         if (err < 0) {
 157                 kfree(fp);
 158                 kfree(rate_table);
 159                 return err;
 160         }
 161         if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
 162             fp->altset_idx >= iface->num_altsetting) {
 163                 kfree(fp);
 164                 kfree(rate_table);
 165                 return -EINVAL;
 166         }
 167         alts = &iface->altsetting[fp->altset_idx];
 168         fp->datainterval = snd_usb_parse_datainterval(chip, alts);
 169         fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 170         usb_set_interface(chip->dev, fp->iface, 0);
 171         snd_usb_init_pitch(chip, fp->iface, alts, fp);
 172         snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
 173         return 0;
 174 }
 175
 176 /*
 177  * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
 178  * The only way to detect the sample rate is by looking at wMaxPacketSize.
 179  */
 180 static int create_uaxx_quirk(struct snd_usb_audio *chip,
 181                              struct usb_interface *iface,
 182                              struct usb_driver *driver,
 183                              const struct snd_usb_audio_quirk *quirk)
 184 {
 185         static const struct audioformat ua_format = {
 186                 .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 187                 .channels = 2,
 188                 .fmt_type = UAC_FORMAT_TYPE_I,
 189                 .altsetting = 1,
 190                 .altset_idx = 1,
 191                 .rates = SNDRV_PCM_RATE_CONTINUOUS,
 192         };
 193         struct usb_host_interface *alts;
 194         struct usb_interface_descriptor *altsd;
 195         struct audioformat *fp;
 196         int stream, err;
 197
 198         /* both PCM and MIDI interfaces have 2 or more altsettings */
 199         if (iface->num_altsetting < 2)
 200                 return -ENXIO;
 201         alts = &iface->altsetting[1];
 202         altsd = get_iface_desc(alts);
 203
 204         if (altsd->bNumEndpoints == 2) {
 205                 static const struct snd_usb_midi_endpoint_info ua700_ep = {
 206                         .out_cables = 0x0003,
 207                         .in_cables  = 0x0003
 208                 };
 209                 static const struct snd_usb_audio_quirk ua700_quirk = {
 210                         .type = QUIRK_MIDI_FIXED_ENDPOINT,
 211                         .data = &ua700_ep
 212                 };
 213                 static const struct snd_usb_midi_endpoint_info uaxx_ep = {
 214                         .out_cables = 0x0001,
 215                         .in_cables  = 0x0001
 216                 };
 217                 static const struct snd_usb_audio_quirk uaxx_quirk = {
 218                         .type = QUIRK_MIDI_FIXED_ENDPOINT,
 219                         .data = &uaxx_ep
 220                 };
 221                 const struct snd_usb_audio_quirk *quirk =
 222                         chip->usb_id == USB_ID(0x0582, 0x002b)
 223                         ? &ua700_quirk : &uaxx_quirk;
 224                 return snd_usbmidi_create(chip->card, iface,
 225                                           &chip->midi_list, quirk);
 226         }
 227
 228         if (altsd->bNumEndpoints != 1)
 229                 return -ENXIO;
 230
 231         fp = kmemdup(&ua_format, sizeof(*fp), GFP_KERNEL);
 232         if (!fp)
 233                 return -ENOMEM;
 234
 235         fp->iface = altsd->bInterfaceNumber;
 236         fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
 237         fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
 238         fp->datainterval = 0;
 239         fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 240
 241         switch (fp->maxpacksize) {
 242         case 0x120:
 243                 fp->rate_max = fp->rate_min = 44100;
 244                 break;
 245         case 0x138:
 246         case 0x140:
 247                 fp->rate_max = fp->rate_min = 48000;
 248                 break;
 249         case 0x258:
 250         case 0x260:
 251                 fp->rate_max = fp->rate_min = 96000;
 252                 break;
 253         default:
 254                 snd_printk(KERN_ERR "unknown sample rate\n");
 255                 kfree(fp);
 256                 return -ENXIO;
 257         }
 258
 259         stream = (fp->endpoint & USB_DIR_IN)
 260                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 261         err = snd_usb_add_audio_stream(chip, stream, fp);
 262         if (err < 0) {
 263                 kfree(fp);
 264                 return err;
 265         }
 266         usb_set_interface(chip->dev, fp->iface, 0);
 267         return 0;
 268 }
 269
 270 /*
 271  * Create a standard mixer for the specified interface.
 272  */
 273 static int create_standard_mixer_quirk(struct snd_usb_audio *chip,
 274                                        struct usb_interface *iface,
 275                                        struct usb_driver *driver,
 276                                        const struct snd_usb_audio_quirk *quirk)
 277 {
 278         if (quirk->ifnum < 0)
 279                 return 0;
 280
 281         return snd_usb_create_mixer(chip, quirk->ifnum, 0);
 282 }
 283
 284 /*
 285  * audio-interface quirks
 286  *
 287  * returns zero if no standard audio/MIDI parsing is needed.
 288  * returns a positive value if standard audio/midi interfaces are parsed
 289  * after this.
 290  * returns a negative value at error.
 291  */
 292 int snd_usb_create_quirk(struct snd_usb_audio *chip,
 293                          struct usb_interface *iface,
 294                          struct usb_driver *driver,
 295                          const struct snd_usb_audio_quirk *quirk)
 296 {
 297         typedef int (*quirk_func_t)(struct snd_usb_audio *,
 298                                     struct usb_interface *,
 299                                     struct usb_driver *,
 300                                     const struct snd_usb_audio_quirk *);
 301         static const quirk_func_t quirk_funcs[] = {
 302                 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
 303                 [QUIRK_COMPOSITE] = create_composite_quirk,
 304                 [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
 305                 [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
 306                 [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
 307                 [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
 308                 [QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
 309                 [QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
 310                 [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
 311                 [QUIRK_MIDI_CME] = create_any_midi_quirk,
 312                 [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
 313                 [QUIRK_MIDI_FTDI] = create_any_midi_quirk,
 314                 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
 315                 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
 316                 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
 317                 [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk,
 318                 [QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
 319         };
 320
 321         if (quirk->type < QUIRK_TYPE_COUNT) {
 322                 return quirk_funcs[quirk->type](chip, iface, driver, quirk);
 323         } else {
 324                 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
 325                 return -ENXIO;
 326         }
 327 }
 328
 329 /*
 330  * boot quirks
 331  */
 332
 333 #define EXTIGY_FIRMWARE_SIZE_OLD 794
 334 #define EXTIGY_FIRMWARE_SIZE_NEW 483
 335
 336 static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
 337 {
 338         struct usb_host_config *config = dev->actconfig;
 339         int err;
 340
 341         if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
 342             le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
 343                 snd_printdd("sending Extigy boot sequence...\n");
 344                 /* Send message to force it to reconnect with full interface. */
 345                 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
 346                                       0x10, 0x43, 0x0001, 0x000a, NULL, 0);
 347                 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
 348                 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
 349                                 &dev->descriptor, sizeof(dev->descriptor));
 350                 config = dev->actconfig;
 351                 if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
 352                 err = usb_reset_configuration(dev);
 353                 if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
 354                 snd_printdd("extigy_boot: new boot length = %d\n",
 355                             le16_to_cpu(get_cfg_desc(config)->wTotalLength));
 356                 return -ENODEV; /* quit this anyway */
 357         }
 358         return 0;
 359 }
 360
 361 static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
 362 {
 363         u8 buf = 1;
 364
 365         snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
 366                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 367                         0, 0, &buf, 1);
 368         if (buf == 0) {
 369                 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
 370                                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 371                                 1, 2000, NULL, 0);
 372                 return -ENODEV;
 373         }
 374         return 0;
 375 }
 376
 377 static int snd_usb_fasttrackpro_boot_quirk(struct usb_device *dev)
 378 {
 379         int err;
 380
 381         if (dev->actconfig->desc.bConfigurationValue == 1) {
 382                 snd_printk(KERN_INFO "usb-audio: "
 383                            "Fast Track Pro switching to config #2\n");
 384                 /* This function has to be available by the usb core module.
 385                  * if it is not avialable the boot quirk has to be left out
 386                  * and the configuration has to be set by udev or hotplug
 387                  * rules
 388                  */
 389                 err = usb_driver_set_configuration(dev, 2);
 390                 if (err < 0)
 391                         snd_printdd("error usb_driver_set_configuration: %d\n",
 392                                     err);
 393                 /* Always return an error, so that we stop creating a device
 394                    that will just be destroyed and recreated with a new
 395                    configuration */
 396                 return -ENODEV;
 397         } else
 398                 snd_printk(KERN_INFO "usb-audio: Fast Track Pro config OK\n");
 399
 400         return 0;
 401 }
 402
 403 /*
 404  * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
 405  * documented in the device's data sheet.
 406  */
 407 static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
 408 {
 409         u8 buf[4];
 410         buf[0] = 0x20;
 411         buf[1] = value & 0xff;
 412         buf[2] = (value >> 8) & 0xff;
 413         buf[3] = reg;
 414         return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
 415                                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
 416                                0, 0, &buf, 4);
 417 }
 418
 419 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
 420 {
 421         /*
 422          * Enable line-out driver mode, set headphone source to front
 423          * channels, enable stereo mic.
 424          */
 425         return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
 426 }
 427
 428 /*
 429  * C-Media CM6206 is based on CM106 with two additional
 430  * registers that are not documented in the data sheet.
 431  * Values here are chosen based on sniffing USB traffic
 432  * under Windows.
 433  */
 434 static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
 435 {
 436         int err  = 0, reg;
 437         int val[] = {0x2004, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
 438
 439         for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
 440                 err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
 441                 if (err < 0)
 442                         return err;
 443         }
 444
 445         return err;
 446 }
 447
 448 /*
 449  * This call will put the synth in "USB send" mode, i.e it will send MIDI
 450  * messages through USB (this is disabled at startup). The synth will
 451  * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
 452  * sign on its LCD. Values here are chosen based on sniffing USB traffic
 453  * under Windows.
 454  */
 455 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
 456 {
 457         int err, actual_length;
 458
 459         /* "midi send" enable */
 460         static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
 461
 462         void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
 463         if (!buf)
 464                 return -ENOMEM;
 465         err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
 466                         ARRAY_SIZE(seq), &actual_length, 1000);
 467         kfree(buf);
 468         if (err < 0)
 469                 return err;
 470
 471         return 0;
 472 }
 473
 474 /*
 475  * Some sound cards from Native Instruments are in fact compliant to the USB
 476  * audio standard of version 2 and other approved USB standards, even though
 477  * they come up as vendor-specific device when first connected.
 478  *
 479  * However, they can be told to come up with a new set of descriptors
 480  * upon their next enumeration, and the interfaces announced by the new
 481  * descriptors will then be handled by the kernel's class drivers. As the
 482  * product ID will also change, no further checks are required.
 483  */
 484
 485 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
 486 {
 487         int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 488                                   0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 489                                   cpu_to_le16(1), 0, NULL, 0, 1000);
 490
 491         if (ret < 0)
 492                 return ret;
 493
 494         usb_reset_device(dev);
 495
 496         /* return -EAGAIN, so the creation of an audio interface for this
 497          * temporary device is aborted. The device will reconnect with a
 498          * new product ID */
 499         return -EAGAIN;
 500 }
 501
 502 static void mbox2_setup_48_24_magic(struct usb_device *dev)
 503 {
 504         u8 srate[3];
 505         u8 temp[12];
 506
 507         /* Choose 48000Hz permanently */
 508         srate[0] = 0x80;
 509         srate[1] = 0xbb;
 510         srate[2] = 0x00;
 511
 512         /* Send the magic! */
 513         snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
 514                 0x01, 0x22, 0x0100, 0x0085, &temp, 0x0003);
 515         snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
 516                 0x81, 0xa2, 0x0100, 0x0085, &srate, 0x0003);
 517         snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
 518                 0x81, 0xa2, 0x0100, 0x0086, &srate, 0x0003);
 519         snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
 520                 0x81, 0xa2, 0x0100, 0x0003, &srate, 0x0003);
 521         return;
 522 }
 523
 524 /* Digidesign Mbox 2 needs to load firmware onboard
 525  * and driver must wait a few seconds for initialisation.
 526  */
 527
 528 #define MBOX2_FIRMWARE_SIZE    646
 529 #define MBOX2_BOOT_LOADING     0x01 /* Hard coded into the device */
 530 #define MBOX2_BOOT_READY       0x02 /* Hard coded into the device */
 531
 532 static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
 533 {
 534         struct usb_host_config *config = dev->actconfig;
 535         int err;
 536         u8 bootresponse[0x12];
 537         int fwsize;
 538         int count;
 539
 540         fwsize = le16_to_cpu(get_cfg_desc(config)->wTotalLength);
 541
 542         if (fwsize != MBOX2_FIRMWARE_SIZE) {
 543                 snd_printk(KERN_ERR "usb-audio: Invalid firmware size=%d.\n", fwsize);
 544                 return -ENODEV;
 545         }
 546
 547         snd_printd("usb-audio: Sending Digidesign Mbox 2 boot sequence...\n");
 548
 549         count = 0;
 550         bootresponse[0] = MBOX2_BOOT_LOADING;
 551         while ((bootresponse[0] == MBOX2_BOOT_LOADING) && (count < 10)) {
 552                 msleep(500); /* 0.5 second delay */
 553                 snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
 554                         /* Control magic - load onboard firmware */
 555                         0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012);
 556                 if (bootresponse[0] == MBOX2_BOOT_READY)
 557                         break;
 558                 snd_printd("usb-audio: device not ready, resending boot sequence...\n");
 559                 count++;
 560         }
 561
 562         if (bootresponse[0] != MBOX2_BOOT_READY) {
 563                 snd_printk(KERN_ERR "usb-audio: Unknown bootresponse=%d, or timed out, ignoring device.\n", bootresponse[0]);
 564                 return -ENODEV;
 565         }
 566
 567         snd_printdd("usb-audio: device initialised!\n");
 568
 569         err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
 570                 &dev->descriptor, sizeof(dev->descriptor));
 571         config = dev->actconfig;
 572         if (err < 0)
 573                 snd_printd("error usb_get_descriptor: %d\n", err);
 574
 575         err = usb_reset_configuration(dev);
 576         if (err < 0)
 577                 snd_printd("error usb_reset_configuration: %d\n", err);
 578         snd_printdd("mbox2_boot: new boot length = %d\n",
 579                 le16_to_cpu(get_cfg_desc(config)->wTotalLength));
 580
 581         mbox2_setup_48_24_magic(dev);
 582
 583         snd_printk(KERN_INFO "usb-audio: Digidesign Mbox 2: 24bit 48kHz");
 584
 585         return 0; /* Successful boot */
 586 }
 587
 588 /*
 589  * Setup quirks
 590  */
 591 #define MAUDIO_SET              0x01 /* parse device_setup */
 592 #define MAUDIO_SET_COMPATIBLE   0x80 /* use only "win-compatible" interfaces */
 593 #define MAUDIO_SET_DTS          0x02 /* enable DTS Digital Output */
 594 #define MAUDIO_SET_96K          0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
 595 #define MAUDIO_SET_24B          0x08 /* 24bits sample if set, 16bits otherwise */
 596 #define MAUDIO_SET_DI           0x10 /* enable Digital Input */
 597 #define MAUDIO_SET_MASK         0x1f /* bit mask for setup value */
 598 #define MAUDIO_SET_24B_48K_DI    0x19 /* 24bits+48KHz+Digital Input */
 599 #define MAUDIO_SET_24B_48K_NOTDI 0x09 /* 24bits+48KHz+No Digital Input */
 600 #define MAUDIO_SET_16B_48K_DI    0x11 /* 16bits+48KHz+Digital Input */
 601 #define MAUDIO_SET_16B_48K_NOTDI 0x01 /* 16bits+48KHz+No Digital Input */
 602
 603 static int quattro_skip_setting_quirk(struct snd_usb_audio *chip,
 604                                       int iface, int altno)
 605 {
 606         /* Reset ALL ifaces to 0 altsetting.
 607          * Call it for every possible altsetting of every interface.
 608          */
 609         usb_set_interface(chip->dev, iface, 0);
 610         if (chip->setup & MAUDIO_SET) {
 611                 if (chip->setup & MAUDIO_SET_COMPATIBLE) {
 612                         if (iface != 1 && iface != 2)
 613                                 return 1; /* skip all interfaces but 1 and 2 */
 614                 } else {
 615                         unsigned int mask;
 616                         if (iface == 1 || iface == 2)
 617                                 return 1; /* skip interfaces 1 and 2 */
 618                         if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
 619                                 return 1; /* skip this altsetting */
 620                         mask = chip->setup & MAUDIO_SET_MASK;
 621                         if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
 622                                 return 1; /* skip this altsetting */
 623                         if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
 624                                 return 1; /* skip this altsetting */
 625                         if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 4)
 626                                 return 1; /* skip this altsetting */
 627                 }
 628         }
 629         snd_printdd(KERN_INFO
 630                     "using altsetting %d for interface %d config %d\n",
 631                     altno, iface, chip->setup);
 632         return 0; /* keep this altsetting */
 633 }
 634
 635 static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
 636                                          int iface,
 637                                          int altno)
 638 {
 639         /* Reset ALL ifaces to 0 altsetting.
 640          * Call it for every possible altsetting of every interface.
 641          */
 642         usb_set_interface(chip->dev, iface, 0);
 643
 644         if (chip->setup & MAUDIO_SET) {
 645                 unsigned int mask;
 646                 if ((chip->setup & MAUDIO_SET_DTS) && altno != 6)
 647                         return 1; /* skip this altsetting */
 648                 if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
 649                         return 1; /* skip this altsetting */
 650                 mask = chip->setup & MAUDIO_SET_MASK;
 651                 if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
 652                         return 1; /* skip this altsetting */
 653                 if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
 654                         return 1; /* skip this altsetting */
 655                 if (mask == MAUDIO_SET_16B_48K_DI && altno != 4)
 656                         return 1; /* skip this altsetting */
 657                 if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 5)
 658                         return 1; /* skip this altsetting */
 659         }
 660
 661         return 0; /* keep this altsetting */
 662 }
 663
 664 static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
 665                                            int iface, int altno)
 666 {
 667         /* Reset ALL ifaces to 0 altsetting.
 668          * Call it for every possible altsetting of every interface.
 669          */
 670         usb_set_interface(chip->dev, iface, 0);
 671
 672         /* possible configuration where both inputs and only one output is
 673          *used is not supported by the current setup
 674          */
 675         if (chip->setup & (MAUDIO_SET | MAUDIO_SET_24B)) {
 676                 if (chip->setup & MAUDIO_SET_96K) {
 677                         if (altno != 3 && altno != 6)
 678                                 return 1;
 679                 } else if (chip->setup & MAUDIO_SET_DI) {
 680                         if (iface == 4)
 681                                 return 1; /* no analog input */
 682                         if (altno != 2 && altno != 5)
 683                                 return 1; /* enable only altsets 2 and 5 */
 684                 } else {
 685                         if (iface == 5)
 686                                 return 1; /* disable digialt input */
 687                         if (altno != 2 && altno != 5)
 688                                 return 1; /* enalbe only altsets 2 and 5 */
 689                 }
 690         } else {
 691                 /* keep only 16-Bit mode */
 692                 if (altno != 1)
 693                         return 1;
 694         }
 695
 696         snd_printdd(KERN_INFO
 697                     "using altsetting %d for interface %d config %d\n",
 698                     altno, iface, chip->setup);
 699         return 0; /* keep this altsetting */
 700 }
 701
 702 int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
 703                                   int iface,
 704                                   int altno)
 705 {
 706         /* audiophile usb: skip altsets incompatible with device_setup */
 707         if (chip->usb_id == USB_ID(0x0763, 0x2003))
 708                 return audiophile_skip_setting_quirk(chip, iface, altno);
 709         /* quattro usb: skip altsets incompatible with device_setup */
 710         if (chip->usb_id == USB_ID(0x0763, 0x2001))
 711                 return quattro_skip_setting_quirk(chip, iface, altno);
 712         /* fasttrackpro usb: skip altsets incompatible with device_setup */
 713         if (chip->usb_id == USB_ID(0x0763, 0x2012))
 714                 return fasttrackpro_skip_setting_quirk(chip, iface, altno);
 715
 716         return 0;
 717 }
 718
 719 int snd_usb_apply_boot_quirk(struct usb_device *dev,
 720                              struct usb_interface *intf,
 721                              const struct snd_usb_audio_quirk *quirk)
 722 {
 723         u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
 724                         le16_to_cpu(dev->descriptor.idProduct));
 725
 726         switch (id) {
 727         case USB_ID(0x041e, 0x3000):
 728                 /* SB Extigy needs special boot-up sequence */
 729                 /* if more models come, this will go to the quirk list. */
 730                 return snd_usb_extigy_boot_quirk(dev, intf);
 731
 732         case USB_ID(0x041e, 0x3020):
 733                 /* SB Audigy 2 NX needs its own boot-up magic, too */
 734                 return snd_usb_audigy2nx_boot_quirk(dev);
 735
 736         case USB_ID(0x10f5, 0x0200):
 737                 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
 738                 return snd_usb_cm106_boot_quirk(dev);
 739
 740         case USB_ID(0x0d8c, 0x0102):
 741                 /* C-Media CM6206 / CM106-Like Sound Device */
 742         case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
 743                 return snd_usb_cm6206_boot_quirk(dev);
 744
 745         case USB_ID(0x0dba, 0x3000):
 746                 /* Digidesign Mbox 2 */
 747                 return snd_usb_mbox2_boot_quirk(dev);
 748
 749         case USB_ID(0x133e, 0x0815):
 750                 /* Access Music VirusTI Desktop */
 751                 return snd_usb_accessmusic_boot_quirk(dev);
 752
 753         case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
 754         case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
 755         case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
 756                 return snd_usb_nativeinstruments_boot_quirk(dev);
 757         case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
 758                 return snd_usb_fasttrackpro_boot_quirk(dev);
 759         }
 760
 761         return 0;
 762 }
 763
 764 /*
 765  * check if the device uses big-endian samples
 766  */
 767 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
 768 {
 769         /* it depends on altsetting whether the device is big-endian or not */
 770         switch (chip->usb_id) {
 771         case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
 772                 if (fp->altsetting == 2 || fp->altsetting == 3 ||
 773                         fp->altsetting == 5 || fp->altsetting == 6)
 774                         return 1;
 775                 break;
 776         case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
 777                 if (chip->setup == 0x00 ||
 778                         fp->altsetting == 1 || fp->altsetting == 2 ||
 779                         fp->altsetting == 3)
 780                         return 1;
 781                 break;
 782         case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro */
 783                 if (fp->altsetting == 2 || fp->altsetting == 3 ||
 784                         fp->altsetting == 5 || fp->altsetting == 6)
 785                         return 1;
 786                 break;
 787         }
 788         return 0;
 789 }
 790
 791 /*
 792  * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
 793  * not for interface.
 794  */
 795
 796 enum {
 797         EMU_QUIRK_SR_44100HZ = 0,
 798         EMU_QUIRK_SR_48000HZ,
 799         EMU_QUIRK_SR_88200HZ,
 800         EMU_QUIRK_SR_96000HZ,
 801         EMU_QUIRK_SR_176400HZ,
 802         EMU_QUIRK_SR_192000HZ
 803 };
 804
 805 static void set_format_emu_quirk(struct snd_usb_substream *subs,
 806                                  struct audioformat *fmt)
 807 {
 808         unsigned char emu_samplerate_id = 0;
 809
 810         /* When capture is active
 811          * sample rate shouldn't be changed
 812          * by playback substream
 813          */
 814         if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
 815                 if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
 816                         return;
 817         }
 818
 819         switch (fmt->rate_min) {
 820         case 48000:
 821                 emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
 822                 break;
 823         case 88200:
 824                 emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
 825                 break;
 826         case 96000:
 827                 emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
 828                 break;
 829         case 176400:
 830                 emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
 831                 break;
 832         case 192000:
 833                 emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
 834                 break;
 835         default:
 836                 emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
 837                 break;
 838         }
 839         snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
 840 }
 841
 842 void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
 843                               struct audioformat *fmt)
 844 {
 845         switch (subs->stream->chip->usb_id) {
 846         case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
 847         case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
 848         case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
 849         case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
 850                 set_format_emu_quirk(subs, fmt);
 851                 break;
 852         }
 853 }
 854
 855 void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
 856 {
 857         /*
 858          * "Playback Design" products send bogus feedback data at the start
 859          * of the stream. Ignore them.
 860          */
 861         if ((le16_to_cpu(ep->chip->dev->descriptor.idVendor) == 0x23ba) &&
 862             ep->type == SND_USB_ENDPOINT_TYPE_SYNC)
 863                 ep->skip_packets = 4;
 864
 865         /*
 866          * M-Audio Fast Track C400/C600 - when packets are not skipped, real
 867          * world latency varies by approx. +/- 50 frames (at 96KHz) each time
 868          * the stream is (re)started. When skipping packets 16 at endpoint
 869          * start up, the real world latency is stable within +/- 1 frame (also
 870          * across power cycles).
 871          */
 872         if ((ep->chip->usb_id == USB_ID(0x0763, 0x2030) ||
 873              ep->chip->usb_id == USB_ID(0x0763, 0x2031)) &&
 874             ep->type == SND_USB_ENDPOINT_TYPE_DATA)
 875                 ep->skip_packets = 16;
 876 }
 877
 878 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
 879                            __u8 request, __u8 requesttype, __u16 value,
 880                            __u16 index, void *data, __u16 size)
 881 {
 882         /*
 883          * "Playback Design" products need a 20ms delay after each
 884          * class compliant request
 885          */
 886         if ((le16_to_cpu(dev->descriptor.idVendor) == 0x23ba) &&
 887             (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 888                 mdelay(20);
 889 }
 890