linux/sound/usb/quirks.c
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   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 */
  42static 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
  66static 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 */
  79static 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
  88static 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 */
  99static 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 */
 124static 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 */
 180static 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 */
 273static 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 */
 292int 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
 336static 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
 361static 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
 377static 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 */
 407static 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
 419static 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 */
 434static 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 */
 455static 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
 485static 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/*
 503 * Setup quirks
 504 */
 505#define MAUDIO_SET              0x01 /* parse device_setup */
 506#define MAUDIO_SET_COMPATIBLE   0x80 /* use only "win-compatible" interfaces */
 507#define MAUDIO_SET_DTS          0x02 /* enable DTS Digital Output */
 508#define MAUDIO_SET_96K          0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
 509#define MAUDIO_SET_24B          0x08 /* 24bits sample if set, 16bits otherwise */
 510#define MAUDIO_SET_DI           0x10 /* enable Digital Input */
 511#define MAUDIO_SET_MASK         0x1f /* bit mask for setup value */
 512#define MAUDIO_SET_24B_48K_DI    0x19 /* 24bits+48KHz+Digital Input */
 513#define MAUDIO_SET_24B_48K_NOTDI 0x09 /* 24bits+48KHz+No Digital Input */
 514#define MAUDIO_SET_16B_48K_DI    0x11 /* 16bits+48KHz+Digital Input */
 515#define MAUDIO_SET_16B_48K_NOTDI 0x01 /* 16bits+48KHz+No Digital Input */
 516
 517static int quattro_skip_setting_quirk(struct snd_usb_audio *chip,
 518                                      int iface, int altno)
 519{
 520        /* Reset ALL ifaces to 0 altsetting.
 521         * Call it for every possible altsetting of every interface.
 522         */
 523        usb_set_interface(chip->dev, iface, 0);
 524        if (chip->setup & MAUDIO_SET) {
 525                if (chip->setup & MAUDIO_SET_COMPATIBLE) {
 526                        if (iface != 1 && iface != 2)
 527                                return 1; /* skip all interfaces but 1 and 2 */
 528                } else {
 529                        unsigned int mask;
 530                        if (iface == 1 || iface == 2)
 531                                return 1; /* skip interfaces 1 and 2 */
 532                        if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
 533                                return 1; /* skip this altsetting */
 534                        mask = chip->setup & MAUDIO_SET_MASK;
 535                        if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
 536                                return 1; /* skip this altsetting */
 537                        if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
 538                                return 1; /* skip this altsetting */
 539                        if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 4)
 540                                return 1; /* skip this altsetting */
 541                }
 542        }
 543        snd_printdd(KERN_INFO
 544                    "using altsetting %d for interface %d config %d\n",
 545                    altno, iface, chip->setup);
 546        return 0; /* keep this altsetting */
 547}
 548
 549static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
 550                                         int iface,
 551                                         int altno)
 552{
 553        /* Reset ALL ifaces to 0 altsetting.
 554         * Call it for every possible altsetting of every interface.
 555         */
 556        usb_set_interface(chip->dev, iface, 0);
 557
 558        if (chip->setup & MAUDIO_SET) {
 559                unsigned int mask;
 560                if ((chip->setup & MAUDIO_SET_DTS) && altno != 6)
 561                        return 1; /* skip this altsetting */
 562                if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
 563                        return 1; /* skip this altsetting */
 564                mask = chip->setup & MAUDIO_SET_MASK;
 565                if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
 566                        return 1; /* skip this altsetting */
 567                if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
 568                        return 1; /* skip this altsetting */
 569                if (mask == MAUDIO_SET_16B_48K_DI && altno != 4)
 570                        return 1; /* skip this altsetting */
 571                if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 5)
 572                        return 1; /* skip this altsetting */
 573        }
 574
 575        return 0; /* keep this altsetting */
 576}
 577
 578
 579static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
 580                                           int iface, int altno)
 581{
 582        /* Reset ALL ifaces to 0 altsetting.
 583         * Call it for every possible altsetting of every interface.
 584         */
 585        usb_set_interface(chip->dev, iface, 0);
 586
 587        /* possible configuration where both inputs and only one output is
 588         *used is not supported by the current setup
 589         */
 590        if (chip->setup & (MAUDIO_SET | MAUDIO_SET_24B)) {
 591                if (chip->setup & MAUDIO_SET_96K) {
 592                        if (altno != 3 && altno != 6)
 593                                return 1;
 594                } else if (chip->setup & MAUDIO_SET_DI) {
 595                        if (iface == 4)
 596                                return 1; /* no analog input */
 597                        if (altno != 2 && altno != 5)
 598                                return 1; /* enable only altsets 2 and 5 */
 599                } else {
 600                        if (iface == 5)
 601                                return 1; /* disable digialt input */
 602                        if (altno != 2 && altno != 5)
 603                                return 1; /* enalbe only altsets 2 and 5 */
 604                }
 605        } else {
 606                /* keep only 16-Bit mode */
 607                if (altno != 1)
 608                        return 1;
 609        }
 610
 611        snd_printdd(KERN_INFO
 612                    "using altsetting %d for interface %d config %d\n",
 613                    altno, iface, chip->setup);
 614        return 0; /* keep this altsetting */
 615}
 616
 617int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
 618                                  int iface,
 619                                  int altno)
 620{
 621        /* audiophile usb: skip altsets incompatible with device_setup */
 622        if (chip->usb_id == USB_ID(0x0763, 0x2003))
 623                return audiophile_skip_setting_quirk(chip, iface, altno);
 624        /* quattro usb: skip altsets incompatible with device_setup */
 625        if (chip->usb_id == USB_ID(0x0763, 0x2001))
 626                return quattro_skip_setting_quirk(chip, iface, altno);
 627        /* fasttrackpro usb: skip altsets incompatible with device_setup */
 628        if (chip->usb_id == USB_ID(0x0763, 0x2012))
 629                return fasttrackpro_skip_setting_quirk(chip, iface, altno);
 630
 631        return 0;
 632}
 633
 634int snd_usb_apply_boot_quirk(struct usb_device *dev,
 635                             struct usb_interface *intf,
 636                             const struct snd_usb_audio_quirk *quirk)
 637{
 638        u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
 639                        le16_to_cpu(dev->descriptor.idProduct));
 640
 641        switch (id) {
 642        case USB_ID(0x041e, 0x3000):
 643                /* SB Extigy needs special boot-up sequence */
 644                /* if more models come, this will go to the quirk list. */
 645                return snd_usb_extigy_boot_quirk(dev, intf);
 646
 647        case USB_ID(0x041e, 0x3020):
 648                /* SB Audigy 2 NX needs its own boot-up magic, too */
 649                return snd_usb_audigy2nx_boot_quirk(dev);
 650
 651        case USB_ID(0x10f5, 0x0200):
 652                /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
 653                return snd_usb_cm106_boot_quirk(dev);
 654
 655        case USB_ID(0x0d8c, 0x0102):
 656                /* C-Media CM6206 / CM106-Like Sound Device */
 657        case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
 658                return snd_usb_cm6206_boot_quirk(dev);
 659
 660        case USB_ID(0x133e, 0x0815):
 661                /* Access Music VirusTI Desktop */
 662                return snd_usb_accessmusic_boot_quirk(dev);
 663
 664        case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
 665        case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
 666        case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
 667                return snd_usb_nativeinstruments_boot_quirk(dev);
 668        case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
 669                return snd_usb_fasttrackpro_boot_quirk(dev);
 670        }
 671
 672        return 0;
 673}
 674
 675/*
 676 * check if the device uses big-endian samples
 677 */
 678int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
 679{
 680        /* it depends on altsetting wether the device is big-endian or not */
 681        switch (chip->usb_id) {
 682        case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
 683                if (fp->altsetting == 2 || fp->altsetting == 3 ||
 684                        fp->altsetting == 5 || fp->altsetting == 6)
 685                        return 1;
 686                break;
 687        case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
 688                if (chip->setup == 0x00 ||
 689                        fp->altsetting == 1 || fp->altsetting == 2 ||
 690                        fp->altsetting == 3)
 691                        return 1;
 692                break;
 693        case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro */
 694                if (fp->altsetting == 2 || fp->altsetting == 3 ||
 695                        fp->altsetting == 5 || fp->altsetting == 6)
 696                        return 1;
 697                break;
 698        }
 699        return 0;
 700}
 701
 702/*
 703 * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
 704 * not for interface.
 705 */
 706
 707enum {
 708        EMU_QUIRK_SR_44100HZ = 0,
 709        EMU_QUIRK_SR_48000HZ,
 710        EMU_QUIRK_SR_88200HZ,
 711        EMU_QUIRK_SR_96000HZ,
 712        EMU_QUIRK_SR_176400HZ,
 713        EMU_QUIRK_SR_192000HZ
 714};
 715
 716static void set_format_emu_quirk(struct snd_usb_substream *subs,
 717                                 struct audioformat *fmt)
 718{
 719        unsigned char emu_samplerate_id = 0;
 720
 721        /* When capture is active
 722         * sample rate shouldn't be changed
 723         * by playback substream
 724         */
 725        if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
 726                if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
 727                        return;
 728        }
 729
 730        switch (fmt->rate_min) {
 731        case 48000:
 732                emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
 733                break;
 734        case 88200:
 735                emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
 736                break;
 737        case 96000:
 738                emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
 739                break;
 740        case 176400:
 741                emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
 742                break;
 743        case 192000:
 744                emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
 745                break;
 746        default:
 747                emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
 748                break;
 749        }
 750        snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
 751}
 752
 753void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
 754                              struct audioformat *fmt)
 755{
 756        switch (subs->stream->chip->usb_id) {
 757        case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
 758        case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
 759        case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
 760        case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
 761                set_format_emu_quirk(subs, fmt);
 762                break;
 763        }
 764}
 765
 766void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
 767{
 768        /*
 769         * "Playback Design" products send bogus feedback data at the start
 770         * of the stream. Ignore them.
 771         */
 772        if ((le16_to_cpu(ep->chip->dev->descriptor.idVendor) == 0x23ba) &&
 773            ep->type == SND_USB_ENDPOINT_TYPE_SYNC)
 774                ep->skip_packets = 4;
 775}
 776
 777void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
 778                           __u8 request, __u8 requesttype, __u16 value,
 779                           __u16 index, void *data, __u16 size)
 780{
 781        /*
 782         * "Playback Design" products need a 20ms delay after each
 783         * class compliant request
 784         */
 785        if ((le16_to_cpu(dev->descriptor.idVendor) == 0x23ba) &&
 786            (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 787                mdelay(20);
 788}
 789
 790
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