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 */ 32static 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 if (format >= 64) { 44 usb_audio_info(chip, 45 "%u:%d: invalid format type 0x%llx is detected, processed as PCM\n", 46 fp->iface, fp->altsetting, format); 47 format = UAC_FORMAT_TYPE_I_PCM; 48 } 49 sample_width = fmt->bBitResolution; 50 sample_bytes = fmt->bSubframeSize; 51 format = 1ULL << format; 52 break; 53 } 54 55 case UAC_VERSION_2: { 56 struct uac_format_type_i_ext_descriptor *fmt = _fmt; 57 sample_width = fmt->bBitResolution; 58 sample_bytes = fmt->bSubslotSize; 59 60 if (format & UAC2_FORMAT_TYPE_I_RAW_DATA) { 61 pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; 62 /* flag potentially raw DSD capable altsettings */ 63 fp->dsd_raw = true; 64 } 65 66 format <<= 1; 67 break; 68 } 69 case UAC_VERSION_3: { 70 struct uac3_as_header_descriptor *as = _fmt; 71 72 sample_width = as->bBitResolution; 73 sample_bytes = as->bSubslotSize; 74 75 if (format & UAC3_FORMAT_TYPE_I_RAW_DATA) 76 pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; 77 78 format <<= 1; 79 break; 80 } 81 } 82 83 fp->fmt_bits = sample_width; 84 85 if ((pcm_formats == 0) && 86 (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) { 87 /* some devices don't define this correctly... */ 88 usb_audio_info(chip, "%u:%d : format type 0 is detected, processed as PCM\n", 89 fp->iface, fp->altsetting); 90 format = 1 << UAC_FORMAT_TYPE_I_PCM; 91 } 92 if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) { 93 if (((chip->usb_id == USB_ID(0x0582, 0x0016)) || 94 /* Edirol SD-90 */ 95 (chip->usb_id == USB_ID(0x0582, 0x000c))) && 96 /* Roland SC-D70 */ 97 sample_width == 24 && sample_bytes == 2) 98 sample_bytes = 3; 99 else if (sample_width > sample_bytes * 8) { 100 usb_audio_info(chip, "%u:%d : sample bitwidth %d in over sample bytes %d\n", 101 fp->iface, fp->altsetting, 102 sample_width, sample_bytes); 103 } 104 /* check the format byte size */ 105 switch (sample_bytes) { 106 case 1: 107 pcm_formats |= SNDRV_PCM_FMTBIT_S8; 108 break; 109 case 2: 110 if (snd_usb_is_big_endian_format(chip, fp)) 111 pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */ 112 else 113 pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE; 114 break; 115 case 3: 116 if (snd_usb_is_big_endian_format(chip, fp)) 117 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */ 118 else 119 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE; 120 break; 121 case 4: 122 pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE; 123 break; 124 default: 125 usb_audio_info(chip, 126 "%u:%d : unsupported sample bitwidth %d in %d bytes\n", 127 fp->iface, fp->altsetting, 128 sample_width, sample_bytes); 129 break; 130 } 131 } 132 if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) { 133 /* Dallas DS4201 workaround: it advertises U8 format, but really 134 supports S8. */ 135 if (chip->usb_id == USB_ID(0x04fa, 0x4201)) 136 pcm_formats |= SNDRV_PCM_FMTBIT_S8; 137 else 138 pcm_formats |= SNDRV_PCM_FMTBIT_U8; 139 } 140 if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) { 141 pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 142 } 143 if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) { 144 pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW; 145 } 146 if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) { 147 pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW; 148 } 149 if (format & ~0x3f) { 150 usb_audio_info(chip, 151 "%u:%d : unsupported format bits %#llx\n", 152 fp->iface, fp->altsetting, format); 153 } 154 155 pcm_formats |= snd_usb_interface_dsd_format_quirks(chip, fp, sample_bytes); 156 157 return pcm_formats; 158} 159 160static int set_fixed_rate(struct audioformat *fp, int rate, int rate_bits) 161{ 162 kfree(fp->rate_table); 163 fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL); 164 if (!fp->rate_table) 165 return -ENOMEM; 166 fp->nr_rates = 1; 167 fp->rate_min = rate; 168 fp->rate_max = rate; 169 fp->rates = rate_bits; 170 fp->rate_table[0] = rate; 171 return 0; 172} 173 174/* 175 * parse the format descriptor and stores the possible sample rates 176 * on the audioformat table (audio class v1). 177 * 178 * @dev: usb device 179 * @fp: audioformat record 180 * @fmt: the format descriptor 181 * @offset: the start offset of descriptor pointing the rate type 182 * (7 for type I and II, 8 for type II) 183 */ 184static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, 185 unsigned char *fmt, int offset) 186{ 187 int nr_rates = fmt[offset]; 188 189 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { 190 usb_audio_err(chip, 191 "%u:%d : invalid UAC_FORMAT_TYPE desc\n", 192 fp->iface, fp->altsetting); 193 return -EINVAL; 194 } 195 196 if (nr_rates) { 197 /* 198 * build the rate table and bitmap flags 199 */ 200 int r, idx; 201 202 fp->rate_table = kmalloc_array(nr_rates, sizeof(int), 203 GFP_KERNEL); 204 if (fp->rate_table == NULL) 205 return -ENOMEM; 206 207 fp->nr_rates = 0; 208 fp->rate_min = fp->rate_max = 0; 209 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { 210 unsigned int rate = combine_triple(&fmt[idx]); 211 if (!rate) 212 continue; 213 /* C-Media CM6501 mislabels its 96 kHz altsetting */ 214 /* Terratec Aureon 7.1 USB C-Media 6206, too */ 215 /* Ozone Z90 USB C-Media, too */ 216 if (rate == 48000 && nr_rates == 1 && 217 (chip->usb_id == USB_ID(0x0d8c, 0x0201) || 218 chip->usb_id == USB_ID(0x0d8c, 0x0102) || 219 chip->usb_id == USB_ID(0x0d8c, 0x0078) || 220 chip->usb_id == USB_ID(0x0ccd, 0x00b1)) && 221 fp->altsetting == 5 && fp->maxpacksize == 392) 222 rate = 96000; 223 /* Creative VF0420/VF0470 Live Cams report 16 kHz instead of 8kHz */ 224 if (rate == 16000 && 225 (chip->usb_id == USB_ID(0x041e, 0x4064) || 226 chip->usb_id == USB_ID(0x041e, 0x4068))) 227 rate = 8000; 228 229 fp->rate_table[fp->nr_rates] = rate; 230 if (!fp->rate_min || rate < fp->rate_min) 231 fp->rate_min = rate; 232 if (!fp->rate_max || rate > fp->rate_max) 233 fp->rate_max = rate; 234 fp->rates |= snd_pcm_rate_to_rate_bit(rate); 235 fp->nr_rates++; 236 } 237 if (!fp->nr_rates) { 238 hwc_debug("All rates were zero. Skipping format!\n"); 239 return -EINVAL; 240 } 241 } else { 242 /* continuous rates */ 243 fp->rates = SNDRV_PCM_RATE_CONTINUOUS; 244 fp->rate_min = combine_triple(&fmt[offset + 1]); 245 fp->rate_max = combine_triple(&fmt[offset + 4]); 246 } 247 248 /* Jabra Evolve 65 headset */ 249 if (chip->usb_id == USB_ID(0x0b0e, 0x030b)) { 250 /* only 48kHz for playback while keeping 16kHz for capture */ 251 if (fp->nr_rates != 1) 252 return set_fixed_rate(fp, 48000, SNDRV_PCM_RATE_48000); 253 } 254 255 return 0; 256} 257 258 259/* 260 * Presonus Studio 1810c supports a limited set of sampling 261 * rates per altsetting but reports the full set each time. 262 * If we don't filter out the unsupported rates and attempt 263 * to configure the card, it will hang refusing to do any 264 * further audio I/O until a hard reset is performed. 265 * 266 * The list of supported rates per altsetting (set of available 267 * I/O channels) is described in the owner's manual, section 2.2. 268 */ 269static bool s1810c_valid_sample_rate(struct audioformat *fp, 270 unsigned int rate) 271{ 272 switch (fp->altsetting) { 273 case 1: 274 /* All ADAT ports available */ 275 return rate <= 48000; 276 case 2: 277 /* Half of ADAT ports available */ 278 return (rate == 88200 || rate == 96000); 279 case 3: 280 /* Analog I/O only (no S/PDIF nor ADAT) */ 281 return rate >= 176400; 282 default: 283 return false; 284 } 285 return false; 286} 287 288/* 289 * Many Focusrite devices supports a limited set of sampling rates per 290 * altsetting. Maximum rate is exposed in the last 4 bytes of Format Type 291 * descriptor which has a non-standard bLength = 10. 292 */ 293static bool focusrite_valid_sample_rate(struct snd_usb_audio *chip, 294 struct audioformat *fp, 295 unsigned int rate) 296{ 297 struct usb_interface *iface; 298 struct usb_host_interface *alts; 299 unsigned char *fmt; 300 unsigned int max_rate; 301 302 iface = usb_ifnum_to_if(chip->dev, fp->iface); 303 if (!iface) 304 return true; 305 306 alts = &iface->altsetting[fp->altset_idx]; 307 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, 308 NULL, UAC_FORMAT_TYPE); 309 if (!fmt) 310 return true; 311 312 if (fmt[0] == 10) { /* bLength */ 313 max_rate = combine_quad(&fmt[6]); 314 315 /* Validate max rate */ 316 if (max_rate != 48000 && 317 max_rate != 96000 && 318 max_rate != 192000 && 319 max_rate != 384000) { 320 321 usb_audio_info(chip, 322 "%u:%d : unexpected max rate: %u\n", 323 fp->iface, fp->altsetting, max_rate); 324 325 return true; 326 } 327 328 return rate <= max_rate; 329 } 330 331 return true; 332} 333 334/* 335 * Helper function to walk the array of sample rate triplets reported by 336 * the device. The problem is that we need to parse whole array first to 337 * get to know how many sample rates we have to expect. 338 * Then fp->rate_table can be allocated and filled. 339 */ 340static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip, 341 struct audioformat *fp, int nr_triplets, 342 const unsigned char *data) 343{ 344 int i, nr_rates = 0; 345 346 fp->rates = fp->rate_min = fp->rate_max = 0; 347 348 for (i = 0; i < nr_triplets; i++) { 349 int min = combine_quad(&data[2 + 12 * i]); 350 int max = combine_quad(&data[6 + 12 * i]); 351 int res = combine_quad(&data[10 + 12 * i]); 352 unsigned int rate; 353 354 if ((max < 0) || (min < 0) || (res < 0) || (max < min)) 355 continue; 356 357 /* 358 * for ranges with res == 1, we announce a continuous sample 359 * rate range, and this function should return 0 for no further 360 * parsing. 361 */ 362 if (res == 1) { 363 fp->rate_min = min; 364 fp->rate_max = max; 365 fp->rates = SNDRV_PCM_RATE_CONTINUOUS; 366 return 0; 367 } 368 369 for (rate = min; rate <= max; rate += res) { 370 371 /* Filter out invalid rates on Presonus Studio 1810c */ 372 if (chip->usb_id == USB_ID(0x194f, 0x010c) && 373 !s1810c_valid_sample_rate(fp, rate)) 374 goto skip_rate; 375 376 /* Filter out invalid rates on Focusrite devices */ 377 if (USB_ID_VENDOR(chip->usb_id) == 0x1235 && 378 !focusrite_valid_sample_rate(chip, fp, rate)) 379 goto skip_rate; 380 381 if (fp->rate_table) 382 fp->rate_table[nr_rates] = rate; 383 if (!fp->rate_min || rate < fp->rate_min) 384 fp->rate_min = rate; 385 if (!fp->rate_max || rate > fp->rate_max) 386 fp->rate_max = rate; 387 fp->rates |= snd_pcm_rate_to_rate_bit(rate); 388 389 nr_rates++; 390 if (nr_rates >= MAX_NR_RATES) { 391 usb_audio_err(chip, "invalid uac2 rates\n"); 392 break; 393 } 394 395skip_rate: 396 /* avoid endless loop */ 397 if (res == 0) 398 break; 399 } 400 } 401 402 return nr_rates; 403} 404 405/* Line6 Helix series and the Rode Rodecaster Pro don't support the 406 * UAC2_CS_RANGE usb function call. Return a static table of known 407 * clock rates. 408 */ 409static int line6_parse_audio_format_rates_quirk(struct snd_usb_audio *chip, 410 struct audioformat *fp) 411{ 412 switch (chip->usb_id) { 413 case USB_ID(0x0e41, 0x4241): /* Line6 Helix */ 414 case USB_ID(0x0e41, 0x4242): /* Line6 Helix Rack */ 415 case USB_ID(0x0e41, 0x4244): /* Line6 Helix LT */ 416 case USB_ID(0x0e41, 0x4246): /* Line6 HX-Stomp */ 417 case USB_ID(0x0e41, 0x4253): /* Line6 HX-Stomp XL */ 418 case USB_ID(0x0e41, 0x4247): /* Line6 Pod Go */ 419 case USB_ID(0x0e41, 0x4248): /* Line6 Helix >= fw 2.82 */ 420 case USB_ID(0x0e41, 0x4249): /* Line6 Helix Rack >= fw 2.82 */ 421 case USB_ID(0x0e41, 0x424a): /* Line6 Helix LT >= fw 2.82 */ 422 case USB_ID(0x0e41, 0x424b): /* Line6 Pod Go */ 423 case USB_ID(0x19f7, 0x0011): /* Rode Rodecaster Pro */ 424 return set_fixed_rate(fp, 48000, SNDRV_PCM_RATE_48000); 425 } 426 427 return -ENODEV; 428} 429 430/* 431 * parse the format descriptor and stores the possible sample rates 432 * on the audioformat table (audio class v2 and v3). 433 */ 434static int parse_audio_format_rates_v2v3(struct snd_usb_audio *chip, 435 struct audioformat *fp) 436{ 437 struct usb_device *dev = chip->dev; 438 unsigned char tmp[2], *data; 439 int nr_triplets, data_size, ret = 0, ret_l6; 440 int clock = snd_usb_clock_find_source(chip, fp, false); 441 442 if (clock < 0) { 443 dev_err(&dev->dev, 444 "%s(): unable to find clock source (clock %d)\n", 445 __func__, clock); 446 goto err; 447 } 448 449 /* get the number of sample rates first by only fetching 2 bytes */ 450 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, 451 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 452 UAC2_CS_CONTROL_SAM_FREQ << 8, 453 snd_usb_ctrl_intf(chip) | (clock << 8), 454 tmp, sizeof(tmp)); 455 456 if (ret < 0) { 457 /* line6 helix devices don't support UAC2_CS_CONTROL_SAM_FREQ call */ 458 ret_l6 = line6_parse_audio_format_rates_quirk(chip, fp); 459 if (ret_l6 == -ENODEV) { 460 /* no line6 device found continue showing the error */ 461 dev_err(&dev->dev, 462 "%s(): unable to retrieve number of sample rates (clock %d)\n", 463 __func__, clock); 464 goto err; 465 } 466 if (ret_l6 == 0) { 467 dev_info(&dev->dev, 468 "%s(): unable to retrieve number of sample rates: set it to a predefined value (clock %d).\n", 469 __func__, clock); 470 return 0; 471 } 472 ret = ret_l6; 473 goto err; 474 } 475 476 nr_triplets = (tmp[1] << 8) | tmp[0]; 477 data_size = 2 + 12 * nr_triplets; 478 data = kzalloc(data_size, GFP_KERNEL); 479 if (!data) { 480 ret = -ENOMEM; 481 goto err; 482 } 483 484 /* now get the full information */ 485 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, 486 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 487 UAC2_CS_CONTROL_SAM_FREQ << 8, 488 snd_usb_ctrl_intf(chip) | (clock << 8), 489 data, data_size); 490 491 if (ret < 0) { 492 dev_err(&dev->dev, 493 "%s(): unable to retrieve sample rate range (clock %d)\n", 494 __func__, clock); 495 ret = -EINVAL; 496 goto err_free; 497 } 498 499 /* Call the triplet parser, and make sure fp->rate_table is NULL. 500 * We just use the return value to know how many sample rates we 501 * will have to deal with. */ 502 kfree(fp->rate_table); 503 fp->rate_table = NULL; 504 fp->nr_rates = parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); 505 506 if (fp->nr_rates == 0) { 507 /* SNDRV_PCM_RATE_CONTINUOUS */ 508 ret = 0; 509 goto err_free; 510 } 511 512 fp->rate_table = kmalloc_array(fp->nr_rates, sizeof(int), GFP_KERNEL); 513 if (!fp->rate_table) { 514 ret = -ENOMEM; 515 goto err_free; 516 } 517 518 /* Call the triplet parser again, but this time, fp->rate_table is 519 * allocated, so the rates will be stored */ 520 parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); 521 522err_free: 523 kfree(data); 524err: 525 return ret; 526} 527 528/* 529 * parse the format type I and III descriptors 530 */ 531static int parse_audio_format_i(struct snd_usb_audio *chip, 532 struct audioformat *fp, u64 format, 533 void *_fmt) 534{ 535 snd_pcm_format_t pcm_format; 536 unsigned int fmt_type; 537 int ret; 538 539 switch (fp->protocol) { 540 default: 541 case UAC_VERSION_1: 542 case UAC_VERSION_2: { 543 struct uac_format_type_i_continuous_descriptor *fmt = _fmt; 544 545 fmt_type = fmt->bFormatType; 546 break; 547 } 548 case UAC_VERSION_3: { 549 /* fp->fmt_type is already set in this case */ 550 fmt_type = fp->fmt_type; 551 break; 552 } 553 } 554 555 if (fmt_type == UAC_FORMAT_TYPE_III) { 556 /* FIXME: the format type is really IECxxx 557 * but we give normal PCM format to get the existing 558 * apps working... 559 */ 560 switch (chip->usb_id) { 561 562 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ 563 if (chip->setup == 0x00 && 564 fp->altsetting == 6) 565 pcm_format = SNDRV_PCM_FORMAT_S16_BE; 566 else 567 pcm_format = SNDRV_PCM_FORMAT_S16_LE; 568 break; 569 default: 570 pcm_format = SNDRV_PCM_FORMAT_S16_LE; 571 } 572 fp->formats = pcm_format_to_bits(pcm_format); 573 } else { 574 fp->formats = parse_audio_format_i_type(chip, fp, format, _fmt); 575 if (!fp->formats) 576 return -EINVAL; 577 } 578 579 /* gather possible sample rates */ 580 /* audio class v1 reports possible sample rates as part of the 581 * proprietary class specific descriptor. 582 * audio class v2 uses class specific EP0 range requests for that. 583 */ 584 switch (fp->protocol) { 585 default: 586 case UAC_VERSION_1: { 587 struct uac_format_type_i_continuous_descriptor *fmt = _fmt; 588 589 fp->channels = fmt->bNrChannels; 590 ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7); 591 break; 592 } 593 case UAC_VERSION_2: 594 case UAC_VERSION_3: { 595 /* fp->channels is already set in this case */ 596 ret = parse_audio_format_rates_v2v3(chip, fp); 597 break; 598 } 599 } 600 601 if (fp->channels < 1) { 602 usb_audio_err(chip, 603 "%u:%d : invalid channels %d\n", 604 fp->iface, fp->altsetting, fp->channels); 605 return -EINVAL; 606 } 607 608 return ret; 609} 610 611/* 612 * parse the format type II descriptor 613 */ 614static int parse_audio_format_ii(struct snd_usb_audio *chip, 615 struct audioformat *fp, 616 u64 format, void *_fmt) 617{ 618 int brate, framesize, ret; 619 620 switch (format) { 621 case UAC_FORMAT_TYPE_II_AC3: 622 /* FIXME: there is no AC3 format defined yet */ 623 // fp->formats = SNDRV_PCM_FMTBIT_AC3; 624 fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */ 625 break; 626 case UAC_FORMAT_TYPE_II_MPEG: 627 fp->formats = SNDRV_PCM_FMTBIT_MPEG; 628 break; 629 default: 630 usb_audio_info(chip, 631 "%u:%d : unknown format tag %#llx is detected. processed as MPEG.\n", 632 fp->iface, fp->altsetting, format); 633 fp->formats = SNDRV_PCM_FMTBIT_MPEG; 634 break; 635 } 636 637 fp->channels = 1; 638 639 switch (fp->protocol) { 640 default: 641 case UAC_VERSION_1: { 642 struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; 643 brate = le16_to_cpu(fmt->wMaxBitRate); 644 framesize = le16_to_cpu(fmt->wSamplesPerFrame); 645 usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); 646 fp->frame_size = framesize; 647 ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ 648 break; 649 } 650 case UAC_VERSION_2: { 651 struct uac_format_type_ii_ext_descriptor *fmt = _fmt; 652 brate = le16_to_cpu(fmt->wMaxBitRate); 653 framesize = le16_to_cpu(fmt->wSamplesPerFrame); 654 usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); 655 fp->frame_size = framesize; 656 ret = parse_audio_format_rates_v2v3(chip, fp); 657 break; 658 } 659 } 660 661 return ret; 662} 663 664int snd_usb_parse_audio_format(struct snd_usb_audio *chip, 665 struct audioformat *fp, u64 format, 666 struct uac_format_type_i_continuous_descriptor *fmt, 667 int stream) 668{ 669 int err; 670 671 switch (fmt->bFormatType) { 672 case UAC_FORMAT_TYPE_I: 673 case UAC_FORMAT_TYPE_III: 674 err = parse_audio_format_i(chip, fp, format, fmt); 675 break; 676 case UAC_FORMAT_TYPE_II: 677 err = parse_audio_format_ii(chip, fp, format, fmt); 678 break; 679 default: 680 usb_audio_info(chip, 681 "%u:%d : format type %d is not supported yet\n", 682 fp->iface, fp->altsetting, 683 fmt->bFormatType); 684 return -ENOTSUPP; 685 } 686 fp->fmt_type = fmt->bFormatType; 687 if (err < 0) 688 return err; 689#if 1 690 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ 691 /* extigy apparently supports sample rates other than 48k 692 * but not in ordinary way. so we enable only 48k atm. 693 */ 694 if (chip->usb_id == USB_ID(0x041e, 0x3000) || 695 chip->usb_id == USB_ID(0x041e, 0x3020) || 696 chip->usb_id == USB_ID(0x041e, 0x3061)) { 697 if (fmt->bFormatType == UAC_FORMAT_TYPE_I && 698 fp->rates != SNDRV_PCM_RATE_48000 && 699 fp->rates != SNDRV_PCM_RATE_96000) 700 return -ENOTSUPP; 701 } 702#endif 703 return 0; 704} 705 706int snd_usb_parse_audio_format_v3(struct snd_usb_audio *chip, 707 struct audioformat *fp, 708 struct uac3_as_header_descriptor *as, 709 int stream) 710{ 711 u64 format = le64_to_cpu(as->bmFormats); 712 int err; 713 714 /* 715 * Type I format bits are D0..D6 716 * This test works because type IV is not supported 717 */ 718 if (format & 0x7f) 719 fp->fmt_type = UAC_FORMAT_TYPE_I; 720 else 721 fp->fmt_type = UAC_FORMAT_TYPE_III; 722 723 err = parse_audio_format_i(chip, fp, format, as); 724 if (err < 0) 725 return err; 726 727 return 0; 728} 729