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/audio-v2.h> 10 #include <linux/usb/audio-v3.h> 11 12 #include <sound/core.h> 13 #include <sound/pcm.h> 14 15 #include "usbaudio.h" 16 #include "card.h" 17 #include "quirks.h" 18 #include "helper.h" 19 #include "debug.h" 20 #include "clock.h" 21 #include "format.h" 22 23 /* 24 * parse the audio format type I descriptor 25 * and returns the corresponding pcm format 26 * 27 * @dev: usb device 28 * @fp: audioformat record 29 * @format: the format tag (wFormatTag) 30 * @fmt: the format type descriptor (v1/v2) or AudioStreaming descriptor (v3) 31 */ 32 static u64 parse_audio_format_i_type(struct snd_usb_audio *chip, 33 struct audioformat *fp, 34 u64 format, void *_fmt) 35 { 36 int sample_width, sample_bytes; 37 u64 pcm_formats = 0; 38 39 switch (fp->protocol) { 40 case UAC_VERSION_1: 41 default: { 42 struct uac_format_type_i_discrete_descriptor *fmt = _fmt; 43 sample_width = fmt->bBitResolution; 44 sample_bytes = fmt->bSubframeSize; 45 format = 1ULL << format; 46 break; 47 } 48 49 case UAC_VERSION_2: { 50 struct uac_format_type_i_ext_descriptor *fmt = _fmt; 51 sample_width = fmt->bBitResolution; 52 sample_bytes = fmt->bSubslotSize; 53 54 if (format & UAC2_FORMAT_TYPE_I_RAW_DATA) { 55 pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; 56 /* flag potentially raw DSD capable altsettings */ 57 fp->dsd_raw = true; 58 } 59 60 format <<= 1; 61 break; 62 } 63 case UAC_VERSION_3: { 64 struct uac3_as_header_descriptor *as = _fmt; 65 66 sample_width = as->bBitResolution; 67 sample_bytes = as->bSubslotSize; 68 69 if (format & UAC3_FORMAT_TYPE_I_RAW_DATA) 70 pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; 71 72 format <<= 1; 73 break; 74 } 75 } 76 77 fp->fmt_bits = sample_width; 78 79 if ((pcm_formats == 0) && 80 (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) { 81 /* some devices don't define this correctly... */ 82 usb_audio_info(chip, "%u:%d : format type 0 is detected, processed as PCM\n", 83 fp->iface, fp->altsetting); 84 format = 1 << UAC_FORMAT_TYPE_I_PCM; 85 } 86 if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) { 87 if (((chip->usb_id == USB_ID(0x0582, 0x0016)) || 88 /* Edirol SD-90 */ 89 (chip->usb_id == USB_ID(0x0582, 0x000c))) && 90 /* Roland SC-D70 */ 91 sample_width == 24 && sample_bytes == 2) 92 sample_bytes = 3; 93 else if (sample_width > sample_bytes * 8) { 94 usb_audio_info(chip, "%u:%d : sample bitwidth %d in over sample bytes %d\n", 95 fp->iface, fp->altsetting, 96 sample_width, sample_bytes); 97 } 98 /* check the format byte size */ 99 switch (sample_bytes) { 100 case 1: 101 pcm_formats |= SNDRV_PCM_FMTBIT_S8; 102 break; 103 case 2: 104 if (snd_usb_is_big_endian_format(chip, fp)) 105 pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */ 106 else 107 pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE; 108 break; 109 case 3: 110 if (snd_usb_is_big_endian_format(chip, fp)) 111 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */ 112 else 113 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE; 114 break; 115 case 4: 116 pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE; 117 break; 118 default: 119 usb_audio_info(chip, 120 "%u:%d : unsupported sample bitwidth %d in %d bytes\n", 121 fp->iface, fp->altsetting, 122 sample_width, sample_bytes); 123 break; 124 } 125 } 126 if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) { 127 /* Dallas DS4201 workaround: it advertises U8 format, but really 128 supports S8. */ 129 if (chip->usb_id == USB_ID(0x04fa, 0x4201)) 130 pcm_formats |= SNDRV_PCM_FMTBIT_S8; 131 else 132 pcm_formats |= SNDRV_PCM_FMTBIT_U8; 133 } 134 if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) { 135 pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 136 } 137 if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) { 138 pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW; 139 } 140 if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) { 141 pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW; 142 } 143 if (format & ~0x3f) { 144 usb_audio_info(chip, 145 "%u:%d : unsupported format bits %#llx\n", 146 fp->iface, fp->altsetting, format); 147 } 148 149 pcm_formats |= snd_usb_interface_dsd_format_quirks(chip, fp, sample_bytes); 150 151 return pcm_formats; 152 } 153 154 static int set_fixed_rate(struct audioformat *fp, int rate, int rate_bits) 155 { 156 kfree(fp->rate_table); 157 fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL); 158 if (!fp->rate_table) 159 return -ENOMEM; 160 fp->nr_rates = 1; 161 fp->rate_min = rate; 162 fp->rate_max = rate; 163 fp->rates = rate_bits; 164 fp->rate_table[0] = rate; 165 return 0; 166 } 167 168 /* 169 * parse the format descriptor and stores the possible sample rates 170 * on the audioformat table (audio class v1). 171 * 172 * @dev: usb device 173 * @fp: audioformat record 174 * @fmt: the format descriptor 175 * @offset: the start offset of descriptor pointing the rate type 176 * (7 for type I and II, 8 for type II) 177 */ 178 static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, 179 unsigned char *fmt, int offset) 180 { 181 int nr_rates = fmt[offset]; 182 183 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { 184 usb_audio_err(chip, 185 "%u:%d : invalid UAC_FORMAT_TYPE desc\n", 186 fp->iface, fp->altsetting); 187 return -EINVAL; 188 } 189 190 if (nr_rates) { 191 /* 192 * build the rate table and bitmap flags 193 */ 194 int r, idx; 195 196 fp->rate_table = kmalloc_array(nr_rates, sizeof(int), 197 GFP_KERNEL); 198 if (fp->rate_table == NULL) 199 return -ENOMEM; 200 201 fp->nr_rates = 0; 202 fp->rate_min = fp->rate_max = 0; 203 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { 204 unsigned int rate = combine_triple(&fmt[idx]); 205 if (!rate) 206 continue; 207 /* C-Media CM6501 mislabels its 96 kHz altsetting */ 208 /* Terratec Aureon 7.1 USB C-Media 6206, too */ 209 if (rate == 48000 && nr_rates == 1 && 210 (chip->usb_id == USB_ID(0x0d8c, 0x0201) || 211 chip->usb_id == USB_ID(0x0d8c, 0x0102) || 212 chip->usb_id == USB_ID(0x0ccd, 0x00b1)) && 213 fp->altsetting == 5 && fp->maxpacksize == 392) 214 rate = 96000; 215 /* Creative VF0420/VF0470 Live Cams report 16 kHz instead of 8kHz */ 216 if (rate == 16000 && 217 (chip->usb_id == USB_ID(0x041e, 0x4064) || 218 chip->usb_id == USB_ID(0x041e, 0x4068))) 219 rate = 8000; 220 221 fp->rate_table[fp->nr_rates] = rate; 222 if (!fp->rate_min || rate < fp->rate_min) 223 fp->rate_min = rate; 224 if (!fp->rate_max || rate > fp->rate_max) 225 fp->rate_max = rate; 226 fp->rates |= snd_pcm_rate_to_rate_bit(rate); 227 fp->nr_rates++; 228 } 229 if (!fp->nr_rates) { 230 hwc_debug("All rates were zero. Skipping format!\n"); 231 return -EINVAL; 232 } 233 } else { 234 /* continuous rates */ 235 fp->rates = SNDRV_PCM_RATE_CONTINUOUS; 236 fp->rate_min = combine_triple(&fmt[offset + 1]); 237 fp->rate_max = combine_triple(&fmt[offset + 4]); 238 } 239 240 /* Jabra Evolve 65 headset */ 241 if (chip->usb_id == USB_ID(0x0b0e, 0x030b)) { 242 /* only 48kHz for playback while keeping 16kHz for capture */ 243 if (fp->nr_rates != 1) 244 return set_fixed_rate(fp, 48000, SNDRV_PCM_RATE_48000); 245 } 246 247 return 0; 248 } 249 250 251 /* 252 * Presonus Studio 1810c supports a limited set of sampling 253 * rates per altsetting but reports the full set each time. 254 * If we don't filter out the unsupported rates and attempt 255 * to configure the card, it will hang refusing to do any 256 * further audio I/O until a hard reset is performed. 257 * 258 * The list of supported rates per altsetting (set of available 259 * I/O channels) is described in the owner's manual, section 2.2. 260 */ 261 static bool s1810c_valid_sample_rate(struct audioformat *fp, 262 unsigned int rate) 263 { 264 switch (fp->altsetting) { 265 case 1: 266 /* All ADAT ports available */ 267 return rate <= 48000; 268 case 2: 269 /* Half of ADAT ports available */ 270 return (rate == 88200 || rate == 96000); 271 case 3: 272 /* Analog I/O only (no S/PDIF nor ADAT) */ 273 return rate >= 176400; 274 default: 275 return false; 276 } 277 return false; 278 } 279 280 /* 281 * Many Focusrite devices supports a limited set of sampling rates per 282 * altsetting. Maximum rate is exposed in the last 4 bytes of Format Type 283 * descriptor which has a non-standard bLength = 10. 284 */ 285 static bool focusrite_valid_sample_rate(struct snd_usb_audio *chip, 286 struct audioformat *fp, 287 unsigned int rate) 288 { 289 struct usb_interface *iface; 290 struct usb_host_interface *alts; 291 unsigned char *fmt; 292 unsigned int max_rate; 293 294 iface = usb_ifnum_to_if(chip->dev, fp->iface); 295 if (!iface) 296 return true; 297 298 alts = &iface->altsetting[fp->altset_idx]; 299 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, 300 NULL, UAC_FORMAT_TYPE); 301 if (!fmt) 302 return true; 303 304 if (fmt[0] == 10) { /* bLength */ 305 max_rate = combine_quad(&fmt[6]); 306 307 /* Validate max rate */ 308 if (max_rate != 48000 && 309 max_rate != 96000 && 310 max_rate != 192000 && 311 max_rate != 384000) { 312 313 usb_audio_info(chip, 314 "%u:%d : unexpected max rate: %u\n", 315 fp->iface, fp->altsetting, max_rate); 316 317 return true; 318 } 319 320 return rate <= max_rate; 321 } 322 323 return true; 324 } 325 326 /* 327 * Helper function to walk the array of sample rate triplets reported by 328 * the device. The problem is that we need to parse whole array first to 329 * get to know how many sample rates we have to expect. 330 * Then fp->rate_table can be allocated and filled. 331 */ 332 static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip, 333 struct audioformat *fp, int nr_triplets, 334 const unsigned char *data) 335 { 336 int i, nr_rates = 0; 337 338 fp->rates = fp->rate_min = fp->rate_max = 0; 339 340 for (i = 0; i < nr_triplets; i++) { 341 int min = combine_quad(&data[2 + 12 * i]); 342 int max = combine_quad(&data[6 + 12 * i]); 343 int res = combine_quad(&data[10 + 12 * i]); 344 unsigned int rate; 345 346 if ((max < 0) || (min < 0) || (res < 0) || (max < min)) 347 continue; 348 349 /* 350 * for ranges with res == 1, we announce a continuous sample 351 * rate range, and this function should return 0 for no further 352 * parsing. 353 */ 354 if (res == 1) { 355 fp->rate_min = min; 356 fp->rate_max = max; 357 fp->rates = SNDRV_PCM_RATE_CONTINUOUS; 358 return 0; 359 } 360 361 for (rate = min; rate <= max; rate += res) { 362 363 /* Filter out invalid rates on Presonus Studio 1810c */ 364 if (chip->usb_id == USB_ID(0x0194f, 0x010c) && 365 !s1810c_valid_sample_rate(fp, rate)) 366 goto skip_rate; 367 368 /* Filter out invalid rates on Focusrite devices */ 369 if (USB_ID_VENDOR(chip->usb_id) == 0x1235 && 370 !focusrite_valid_sample_rate(chip, fp, rate)) 371 goto skip_rate; 372 373 if (fp->rate_table) 374 fp->rate_table[nr_rates] = rate; 375 if (!fp->rate_min || rate < fp->rate_min) 376 fp->rate_min = rate; 377 if (!fp->rate_max || rate > fp->rate_max) 378 fp->rate_max = rate; 379 fp->rates |= snd_pcm_rate_to_rate_bit(rate); 380 381 nr_rates++; 382 if (nr_rates >= MAX_NR_RATES) { 383 usb_audio_err(chip, "invalid uac2 rates\n"); 384 break; 385 } 386 387 skip_rate: 388 /* avoid endless loop */ 389 if (res == 0) 390 break; 391 } 392 } 393 394 return nr_rates; 395 } 396 397 /* Line6 Helix series don't support the UAC2_CS_RANGE usb function 398 * call. Return a static table of known clock rates. 399 */ 400 static int line6_parse_audio_format_rates_quirk(struct snd_usb_audio *chip, 401 struct audioformat *fp) 402 { 403 switch (chip->usb_id) { 404 case USB_ID(0x0e41, 0x4241): /* Line6 Helix */ 405 case USB_ID(0x0e41, 0x4242): /* Line6 Helix Rack */ 406 case USB_ID(0x0e41, 0x4244): /* Line6 Helix LT */ 407 case USB_ID(0x0e41, 0x4246): /* Line6 HX-Stomp */ 408 case USB_ID(0x0e41, 0x4248): /* Line6 Helix >= fw 2.82 */ 409 case USB_ID(0x0e41, 0x4249): /* Line6 Helix Rack >= fw 2.82 */ 410 case USB_ID(0x0e41, 0x424a): /* Line6 Helix LT >= fw 2.82 */ 411 return set_fixed_rate(fp, 48000, SNDRV_PCM_RATE_48000); 412 } 413 414 return -ENODEV; 415 } 416 417 /* 418 * parse the format descriptor and stores the possible sample rates 419 * on the audioformat table (audio class v2 and v3). 420 */ 421 static int parse_audio_format_rates_v2v3(struct snd_usb_audio *chip, 422 struct audioformat *fp) 423 { 424 struct usb_device *dev = chip->dev; 425 unsigned char tmp[2], *data; 426 int nr_triplets, data_size, ret = 0, ret_l6; 427 int clock = snd_usb_clock_find_source(chip, fp, false); 428 429 if (clock < 0) { 430 dev_err(&dev->dev, 431 "%s(): unable to find clock source (clock %d)\n", 432 __func__, clock); 433 goto err; 434 } 435 436 /* get the number of sample rates first by only fetching 2 bytes */ 437 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, 438 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 439 UAC2_CS_CONTROL_SAM_FREQ << 8, 440 snd_usb_ctrl_intf(chip) | (clock << 8), 441 tmp, sizeof(tmp)); 442 443 if (ret < 0) { 444 /* line6 helix devices don't support UAC2_CS_CONTROL_SAM_FREQ call */ 445 ret_l6 = line6_parse_audio_format_rates_quirk(chip, fp); 446 if (ret_l6 == -ENODEV) { 447 /* no line6 device found continue showing the error */ 448 dev_err(&dev->dev, 449 "%s(): unable to retrieve number of sample rates (clock %d)\n", 450 __func__, clock); 451 goto err; 452 } 453 if (ret_l6 == 0) { 454 dev_info(&dev->dev, 455 "%s(): unable to retrieve number of sample rates: set it to a predefined value (clock %d).\n", 456 __func__, clock); 457 return 0; 458 } 459 ret = ret_l6; 460 goto err; 461 } 462 463 nr_triplets = (tmp[1] << 8) | tmp[0]; 464 data_size = 2 + 12 * nr_triplets; 465 data = kzalloc(data_size, GFP_KERNEL); 466 if (!data) { 467 ret = -ENOMEM; 468 goto err; 469 } 470 471 /* now get the full information */ 472 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, 473 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 474 UAC2_CS_CONTROL_SAM_FREQ << 8, 475 snd_usb_ctrl_intf(chip) | (clock << 8), 476 data, data_size); 477 478 if (ret < 0) { 479 dev_err(&dev->dev, 480 "%s(): unable to retrieve sample rate range (clock %d)\n", 481 __func__, clock); 482 ret = -EINVAL; 483 goto err_free; 484 } 485 486 /* Call the triplet parser, and make sure fp->rate_table is NULL. 487 * We just use the return value to know how many sample rates we 488 * will have to deal with. */ 489 kfree(fp->rate_table); 490 fp->rate_table = NULL; 491 fp->nr_rates = parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); 492 493 if (fp->nr_rates == 0) { 494 /* SNDRV_PCM_RATE_CONTINUOUS */ 495 ret = 0; 496 goto err_free; 497 } 498 499 fp->rate_table = kmalloc_array(fp->nr_rates, sizeof(int), GFP_KERNEL); 500 if (!fp->rate_table) { 501 ret = -ENOMEM; 502 goto err_free; 503 } 504 505 /* Call the triplet parser again, but this time, fp->rate_table is 506 * allocated, so the rates will be stored */ 507 parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); 508 509 err_free: 510 kfree(data); 511 err: 512 return ret; 513 } 514 515 /* 516 * parse the format type I and III descriptors 517 */ 518 static int parse_audio_format_i(struct snd_usb_audio *chip, 519 struct audioformat *fp, u64 format, 520 void *_fmt) 521 { 522 snd_pcm_format_t pcm_format; 523 unsigned int fmt_type; 524 int ret; 525 526 switch (fp->protocol) { 527 default: 528 case UAC_VERSION_1: 529 case UAC_VERSION_2: { 530 struct uac_format_type_i_continuous_descriptor *fmt = _fmt; 531 532 fmt_type = fmt->bFormatType; 533 break; 534 } 535 case UAC_VERSION_3: { 536 /* fp->fmt_type is already set in this case */ 537 fmt_type = fp->fmt_type; 538 break; 539 } 540 } 541 542 if (fmt_type == UAC_FORMAT_TYPE_III) { 543 /* FIXME: the format type is really IECxxx 544 * but we give normal PCM format to get the existing 545 * apps working... 546 */ 547 switch (chip->usb_id) { 548 549 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ 550 if (chip->setup == 0x00 && 551 fp->altsetting == 6) 552 pcm_format = SNDRV_PCM_FORMAT_S16_BE; 553 else 554 pcm_format = SNDRV_PCM_FORMAT_S16_LE; 555 break; 556 default: 557 pcm_format = SNDRV_PCM_FORMAT_S16_LE; 558 } 559 fp->formats = pcm_format_to_bits(pcm_format); 560 } else { 561 fp->formats = parse_audio_format_i_type(chip, fp, format, _fmt); 562 if (!fp->formats) 563 return -EINVAL; 564 } 565 566 /* gather possible sample rates */ 567 /* audio class v1 reports possible sample rates as part of the 568 * proprietary class specific descriptor. 569 * audio class v2 uses class specific EP0 range requests for that. 570 */ 571 switch (fp->protocol) { 572 default: 573 case UAC_VERSION_1: { 574 struct uac_format_type_i_continuous_descriptor *fmt = _fmt; 575 576 fp->channels = fmt->bNrChannels; 577 ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7); 578 break; 579 } 580 case UAC_VERSION_2: 581 case UAC_VERSION_3: { 582 /* fp->channels is already set in this case */ 583 ret = parse_audio_format_rates_v2v3(chip, fp); 584 break; 585 } 586 } 587 588 if (fp->channels < 1) { 589 usb_audio_err(chip, 590 "%u:%d : invalid channels %d\n", 591 fp->iface, fp->altsetting, fp->channels); 592 return -EINVAL; 593 } 594 595 return ret; 596 } 597 598 /* 599 * parse the format type II descriptor 600 */ 601 static int parse_audio_format_ii(struct snd_usb_audio *chip, 602 struct audioformat *fp, 603 u64 format, void *_fmt) 604 { 605 int brate, framesize, ret; 606 607 switch (format) { 608 case UAC_FORMAT_TYPE_II_AC3: 609 /* FIXME: there is no AC3 format defined yet */ 610 // fp->formats = SNDRV_PCM_FMTBIT_AC3; 611 fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */ 612 break; 613 case UAC_FORMAT_TYPE_II_MPEG: 614 fp->formats = SNDRV_PCM_FMTBIT_MPEG; 615 break; 616 default: 617 usb_audio_info(chip, 618 "%u:%d : unknown format tag %#llx is detected. processed as MPEG.\n", 619 fp->iface, fp->altsetting, format); 620 fp->formats = SNDRV_PCM_FMTBIT_MPEG; 621 break; 622 } 623 624 fp->channels = 1; 625 626 switch (fp->protocol) { 627 default: 628 case UAC_VERSION_1: { 629 struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; 630 brate = le16_to_cpu(fmt->wMaxBitRate); 631 framesize = le16_to_cpu(fmt->wSamplesPerFrame); 632 usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); 633 fp->frame_size = framesize; 634 ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ 635 break; 636 } 637 case UAC_VERSION_2: { 638 struct uac_format_type_ii_ext_descriptor *fmt = _fmt; 639 brate = le16_to_cpu(fmt->wMaxBitRate); 640 framesize = le16_to_cpu(fmt->wSamplesPerFrame); 641 usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); 642 fp->frame_size = framesize; 643 ret = parse_audio_format_rates_v2v3(chip, fp); 644 break; 645 } 646 } 647 648 return ret; 649 } 650 651 int snd_usb_parse_audio_format(struct snd_usb_audio *chip, 652 struct audioformat *fp, u64 format, 653 struct uac_format_type_i_continuous_descriptor *fmt, 654 int stream) 655 { 656 int err; 657 658 switch (fmt->bFormatType) { 659 case UAC_FORMAT_TYPE_I: 660 case UAC_FORMAT_TYPE_III: 661 err = parse_audio_format_i(chip, fp, format, fmt); 662 break; 663 case UAC_FORMAT_TYPE_II: 664 err = parse_audio_format_ii(chip, fp, format, fmt); 665 break; 666 default: 667 usb_audio_info(chip, 668 "%u:%d : format type %d is not supported yet\n", 669 fp->iface, fp->altsetting, 670 fmt->bFormatType); 671 return -ENOTSUPP; 672 } 673 fp->fmt_type = fmt->bFormatType; 674 if (err < 0) 675 return err; 676 #if 1 677 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ 678 /* extigy apparently supports sample rates other than 48k 679 * but not in ordinary way. so we enable only 48k atm. 680 */ 681 if (chip->usb_id == USB_ID(0x041e, 0x3000) || 682 chip->usb_id == USB_ID(0x041e, 0x3020) || 683 chip->usb_id == USB_ID(0x041e, 0x3061)) { 684 if (fmt->bFormatType == UAC_FORMAT_TYPE_I && 685 fp->rates != SNDRV_PCM_RATE_48000 && 686 fp->rates != SNDRV_PCM_RATE_96000) 687 return -ENOTSUPP; 688 } 689 #endif 690 return 0; 691 } 692 693 int snd_usb_parse_audio_format_v3(struct snd_usb_audio *chip, 694 struct audioformat *fp, 695 struct uac3_as_header_descriptor *as, 696 int stream) 697 { 698 u64 format = le64_to_cpu(as->bmFormats); 699 int err; 700 701 /* 702 * Type I format bits are D0..D6 703 * This test works because type IV is not supported 704 */ 705 if (format & 0x7f) 706 fp->fmt_type = UAC_FORMAT_TYPE_I; 707 else 708 fp->fmt_type = UAC_FORMAT_TYPE_III; 709 710 err = parse_audio_format_i(chip, fp, format, as); 711 if (err < 0) 712 return err; 713 714 return 0; 715 } 716