1 /* 2 * Copyright (c) 2006-2008 Daniel Mack, Karsten Wiese 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19 #include <linux/spinlock.h> 20 #include <linux/init.h> 21 #include <linux/usb.h> 22 #include <sound/core.h> 23 #include <sound/pcm.h> 24 25 #include "device.h" 26 #include "audio.h" 27 28 #define N_URBS 32 29 #define CLOCK_DRIFT_TOLERANCE 5 30 #define FRAMES_PER_URB 8 31 #define BYTES_PER_FRAME 512 32 #define CHANNELS_PER_STREAM 2 33 #define BYTES_PER_SAMPLE 3 34 #define BYTES_PER_SAMPLE_USB 4 35 #define MAX_BUFFER_SIZE (128*1024) 36 #define MAX_ENDPOINT_SIZE 512 37 38 #define ENDPOINT_CAPTURE 2 39 #define ENDPOINT_PLAYBACK 6 40 41 #define MAKE_CHECKBYTE(dev,stream,i) \ 42 (stream << 1) | (~(i / (dev->n_streams * BYTES_PER_SAMPLE_USB)) & 1) 43 44 static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = { 45 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 46 SNDRV_PCM_INFO_BLOCK_TRANSFER), 47 .formats = SNDRV_PCM_FMTBIT_S24_3BE, 48 .rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | 49 SNDRV_PCM_RATE_96000), 50 .rate_min = 44100, 51 .rate_max = 0, /* will overwrite later */ 52 .channels_min = CHANNELS_PER_STREAM, 53 .channels_max = CHANNELS_PER_STREAM, 54 .buffer_bytes_max = MAX_BUFFER_SIZE, 55 .period_bytes_min = 128, 56 .period_bytes_max = MAX_BUFFER_SIZE, 57 .periods_min = 1, 58 .periods_max = 1024, 59 }; 60 61 static void 62 activate_substream(struct snd_usb_caiaqdev *dev, 63 struct snd_pcm_substream *sub) 64 { 65 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) 66 dev->sub_playback[sub->number] = sub; 67 else 68 dev->sub_capture[sub->number] = sub; 69 } 70 71 static void 72 deactivate_substream(struct snd_usb_caiaqdev *dev, 73 struct snd_pcm_substream *sub) 74 { 75 unsigned long flags; 76 spin_lock_irqsave(&dev->spinlock, flags); 77 78 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) 79 dev->sub_playback[sub->number] = NULL; 80 else 81 dev->sub_capture[sub->number] = NULL; 82 83 spin_unlock_irqrestore(&dev->spinlock, flags); 84 } 85 86 static int 87 all_substreams_zero(struct snd_pcm_substream **subs) 88 { 89 int i; 90 for (i = 0; i < MAX_STREAMS; i++) 91 if (subs[i] != NULL) 92 return 0; 93 return 1; 94 } 95 96 static int stream_start(struct snd_usb_caiaqdev *dev) 97 { 98 int i, ret; 99 100 debug("%s(%p)\n", __func__, dev); 101 102 if (dev->streaming) 103 return -EINVAL; 104 105 memset(dev->sub_playback, 0, sizeof(dev->sub_playback)); 106 memset(dev->sub_capture, 0, sizeof(dev->sub_capture)); 107 dev->input_panic = 0; 108 dev->output_panic = 0; 109 dev->first_packet = 1; 110 dev->streaming = 1; 111 dev->warned = 0; 112 113 for (i = 0; i < N_URBS; i++) { 114 ret = usb_submit_urb(dev->data_urbs_in[i], GFP_ATOMIC); 115 if (ret) { 116 log("unable to trigger read #%d! (ret %d)\n", i, ret); 117 dev->streaming = 0; 118 return -EPIPE; 119 } 120 } 121 122 return 0; 123 } 124 125 static void stream_stop(struct snd_usb_caiaqdev *dev) 126 { 127 int i; 128 129 debug("%s(%p)\n", __func__, dev); 130 if (!dev->streaming) 131 return; 132 133 dev->streaming = 0; 134 135 for (i = 0; i < N_URBS; i++) { 136 usb_kill_urb(dev->data_urbs_in[i]); 137 usb_kill_urb(dev->data_urbs_out[i]); 138 } 139 } 140 141 static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream) 142 { 143 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream); 144 debug("%s(%p)\n", __func__, substream); 145 substream->runtime->hw = dev->pcm_info; 146 snd_pcm_limit_hw_rates(substream->runtime); 147 return 0; 148 } 149 150 static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream) 151 { 152 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream); 153 154 debug("%s(%p)\n", __func__, substream); 155 if (all_substreams_zero(dev->sub_playback) && 156 all_substreams_zero(dev->sub_capture)) { 157 /* when the last client has stopped streaming, 158 * all sample rates are allowed again */ 159 stream_stop(dev); 160 dev->pcm_info.rates = dev->samplerates; 161 } 162 163 return 0; 164 } 165 166 static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub, 167 struct snd_pcm_hw_params *hw_params) 168 { 169 debug("%s(%p)\n", __func__, sub); 170 return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params)); 171 } 172 173 static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub) 174 { 175 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub); 176 debug("%s(%p)\n", __func__, sub); 177 deactivate_substream(dev, sub); 178 return snd_pcm_lib_free_pages(sub); 179 } 180 181 /* this should probably go upstream */ 182 #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 183 #error "Change this table" 184 #endif 185 186 static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, 187 48000, 64000, 88200, 96000, 176400, 192000 }; 188 189 static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream) 190 { 191 int bytes_per_sample, bpp, ret, i; 192 int index = substream->number; 193 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream); 194 struct snd_pcm_runtime *runtime = substream->runtime; 195 196 debug("%s(%p)\n", __func__, substream); 197 198 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 199 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1; 200 else 201 dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE; 202 203 if (dev->streaming) 204 return 0; 205 206 /* the first client that opens a stream defines the sample rate 207 * setting for all subsequent calls, until the last client closed. */ 208 for (i=0; i < ARRAY_SIZE(rates); i++) 209 if (runtime->rate == rates[i]) 210 dev->pcm_info.rates = 1 << i; 211 212 snd_pcm_limit_hw_rates(runtime); 213 214 bytes_per_sample = BYTES_PER_SAMPLE; 215 if (dev->spec.data_alignment == 2) 216 bytes_per_sample++; 217 218 bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE) 219 * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams; 220 221 if (bpp > MAX_ENDPOINT_SIZE) 222 bpp = MAX_ENDPOINT_SIZE; 223 224 ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate, 225 runtime->sample_bits, bpp); 226 if (ret) 227 return ret; 228 229 ret = stream_start(dev); 230 if (ret) 231 return ret; 232 233 dev->output_running = 0; 234 wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ); 235 if (!dev->output_running) { 236 stream_stop(dev); 237 return -EPIPE; 238 } 239 240 return 0; 241 } 242 243 static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd) 244 { 245 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub); 246 247 switch (cmd) { 248 case SNDRV_PCM_TRIGGER_START: 249 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 250 activate_substream(dev, sub); 251 break; 252 case SNDRV_PCM_TRIGGER_STOP: 253 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 254 deactivate_substream(dev, sub); 255 break; 256 default: 257 return -EINVAL; 258 } 259 260 return 0; 261 } 262 263 static snd_pcm_uframes_t 264 snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub) 265 { 266 int index = sub->number; 267 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub); 268 269 if (dev->input_panic || dev->output_panic) 270 return SNDRV_PCM_POS_XRUN; 271 272 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) 273 return bytes_to_frames(sub->runtime, 274 dev->audio_out_buf_pos[index]); 275 else 276 return bytes_to_frames(sub->runtime, 277 dev->audio_in_buf_pos[index]); 278 } 279 280 /* operators for both playback and capture */ 281 static struct snd_pcm_ops snd_usb_caiaq_ops = { 282 .open = snd_usb_caiaq_substream_open, 283 .close = snd_usb_caiaq_substream_close, 284 .ioctl = snd_pcm_lib_ioctl, 285 .hw_params = snd_usb_caiaq_pcm_hw_params, 286 .hw_free = snd_usb_caiaq_pcm_hw_free, 287 .prepare = snd_usb_caiaq_pcm_prepare, 288 .trigger = snd_usb_caiaq_pcm_trigger, 289 .pointer = snd_usb_caiaq_pcm_pointer 290 }; 291 292 static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev, 293 struct snd_pcm_substream **subs) 294 { 295 int stream, pb, *cnt; 296 struct snd_pcm_substream *sub; 297 298 for (stream = 0; stream < dev->n_streams; stream++) { 299 sub = subs[stream]; 300 if (!sub) 301 continue; 302 303 pb = frames_to_bytes(sub->runtime, 304 sub->runtime->period_size); 305 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 306 &dev->period_out_count[stream] : 307 &dev->period_in_count[stream]; 308 309 if (*cnt >= pb) { 310 snd_pcm_period_elapsed(sub); 311 *cnt %= pb; 312 } 313 } 314 } 315 316 static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev, 317 const struct urb *urb, 318 const struct usb_iso_packet_descriptor *iso) 319 { 320 unsigned char *usb_buf = urb->transfer_buffer + iso->offset; 321 struct snd_pcm_substream *sub; 322 int stream, i; 323 324 if (all_substreams_zero(dev->sub_capture)) 325 return; 326 327 for (i = 0; i < iso->actual_length;) { 328 for (stream = 0; stream < dev->n_streams; stream++, i++) { 329 sub = dev->sub_capture[stream]; 330 if (sub) { 331 struct snd_pcm_runtime *rt = sub->runtime; 332 char *audio_buf = rt->dma_area; 333 int sz = frames_to_bytes(rt, rt->buffer_size); 334 audio_buf[dev->audio_in_buf_pos[stream]++] 335 = usb_buf[i]; 336 dev->period_in_count[stream]++; 337 if (dev->audio_in_buf_pos[stream] == sz) 338 dev->audio_in_buf_pos[stream] = 0; 339 } 340 } 341 } 342 } 343 344 static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev, 345 const struct urb *urb, 346 const struct usb_iso_packet_descriptor *iso) 347 { 348 unsigned char *usb_buf = urb->transfer_buffer + iso->offset; 349 unsigned char check_byte; 350 struct snd_pcm_substream *sub; 351 int stream, i; 352 353 for (i = 0; i < iso->actual_length;) { 354 if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) { 355 for (stream = 0; 356 stream < dev->n_streams; 357 stream++, i++) { 358 if (dev->first_packet) 359 continue; 360 361 check_byte = MAKE_CHECKBYTE(dev, stream, i); 362 363 if ((usb_buf[i] & 0x3f) != check_byte) 364 dev->input_panic = 1; 365 366 if (usb_buf[i] & 0x80) 367 dev->output_panic = 1; 368 } 369 } 370 dev->first_packet = 0; 371 372 for (stream = 0; stream < dev->n_streams; stream++, i++) { 373 sub = dev->sub_capture[stream]; 374 if (dev->input_panic) 375 usb_buf[i] = 0; 376 377 if (sub) { 378 struct snd_pcm_runtime *rt = sub->runtime; 379 char *audio_buf = rt->dma_area; 380 int sz = frames_to_bytes(rt, rt->buffer_size); 381 audio_buf[dev->audio_in_buf_pos[stream]++] = 382 usb_buf[i]; 383 dev->period_in_count[stream]++; 384 if (dev->audio_in_buf_pos[stream] == sz) 385 dev->audio_in_buf_pos[stream] = 0; 386 } 387 } 388 } 389 } 390 391 static void read_in_urb(struct snd_usb_caiaqdev *dev, 392 const struct urb *urb, 393 const struct usb_iso_packet_descriptor *iso) 394 { 395 if (!dev->streaming) 396 return; 397 398 if (iso->actual_length < dev->bpp) 399 return; 400 401 switch (dev->spec.data_alignment) { 402 case 0: 403 read_in_urb_mode0(dev, urb, iso); 404 break; 405 case 2: 406 read_in_urb_mode2(dev, urb, iso); 407 break; 408 } 409 410 if ((dev->input_panic || dev->output_panic) && !dev->warned) { 411 debug("streaming error detected %s %s\n", 412 dev->input_panic ? "(input)" : "", 413 dev->output_panic ? "(output)" : ""); 414 dev->warned = 1; 415 } 416 } 417 418 static void fill_out_urb(struct snd_usb_caiaqdev *dev, 419 struct urb *urb, 420 const struct usb_iso_packet_descriptor *iso) 421 { 422 unsigned char *usb_buf = urb->transfer_buffer + iso->offset; 423 struct snd_pcm_substream *sub; 424 int stream, i; 425 426 for (i = 0; i < iso->length;) { 427 for (stream = 0; stream < dev->n_streams; stream++, i++) { 428 sub = dev->sub_playback[stream]; 429 if (sub) { 430 struct snd_pcm_runtime *rt = sub->runtime; 431 char *audio_buf = rt->dma_area; 432 int sz = frames_to_bytes(rt, rt->buffer_size); 433 usb_buf[i] = 434 audio_buf[dev->audio_out_buf_pos[stream]]; 435 dev->period_out_count[stream]++; 436 dev->audio_out_buf_pos[stream]++; 437 if (dev->audio_out_buf_pos[stream] == sz) 438 dev->audio_out_buf_pos[stream] = 0; 439 } else 440 usb_buf[i] = 0; 441 } 442 443 /* fill in the check bytes */ 444 if (dev->spec.data_alignment == 2 && 445 i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 446 (dev->n_streams * CHANNELS_PER_STREAM)) 447 for (stream = 0; stream < dev->n_streams; stream++, i++) 448 usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i); 449 } 450 } 451 452 static void read_completed(struct urb *urb) 453 { 454 struct snd_usb_caiaq_cb_info *info = urb->context; 455 struct snd_usb_caiaqdev *dev; 456 struct urb *out; 457 int frame, len, send_it = 0, outframe = 0; 458 459 if (urb->status || !info) 460 return; 461 462 dev = info->dev; 463 464 if (!dev->streaming) 465 return; 466 467 out = dev->data_urbs_out[info->index]; 468 469 /* read the recently received packet and send back one which has 470 * the same layout */ 471 for (frame = 0; frame < FRAMES_PER_URB; frame++) { 472 if (urb->iso_frame_desc[frame].status) 473 continue; 474 475 len = urb->iso_frame_desc[outframe].actual_length; 476 out->iso_frame_desc[outframe].length = len; 477 out->iso_frame_desc[outframe].actual_length = 0; 478 out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame; 479 480 if (len > 0) { 481 spin_lock(&dev->spinlock); 482 fill_out_urb(dev, out, &out->iso_frame_desc[outframe]); 483 read_in_urb(dev, urb, &urb->iso_frame_desc[frame]); 484 spin_unlock(&dev->spinlock); 485 check_for_elapsed_periods(dev, dev->sub_playback); 486 check_for_elapsed_periods(dev, dev->sub_capture); 487 send_it = 1; 488 } 489 490 outframe++; 491 } 492 493 if (send_it) { 494 out->number_of_packets = FRAMES_PER_URB; 495 out->transfer_flags = URB_ISO_ASAP; 496 usb_submit_urb(out, GFP_ATOMIC); 497 } 498 499 /* re-submit inbound urb */ 500 for (frame = 0; frame < FRAMES_PER_URB; frame++) { 501 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame; 502 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME; 503 urb->iso_frame_desc[frame].actual_length = 0; 504 } 505 506 urb->number_of_packets = FRAMES_PER_URB; 507 urb->transfer_flags = URB_ISO_ASAP; 508 usb_submit_urb(urb, GFP_ATOMIC); 509 } 510 511 static void write_completed(struct urb *urb) 512 { 513 struct snd_usb_caiaq_cb_info *info = urb->context; 514 struct snd_usb_caiaqdev *dev = info->dev; 515 516 if (!dev->output_running) { 517 dev->output_running = 1; 518 wake_up(&dev->prepare_wait_queue); 519 } 520 } 521 522 static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret) 523 { 524 int i, frame; 525 struct urb **urbs; 526 struct usb_device *usb_dev = dev->chip.dev; 527 unsigned int pipe; 528 529 pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ? 530 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) : 531 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE); 532 533 urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL); 534 if (!urbs) { 535 log("unable to kmalloc() urbs, OOM!?\n"); 536 *ret = -ENOMEM; 537 return NULL; 538 } 539 540 for (i = 0; i < N_URBS; i++) { 541 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL); 542 if (!urbs[i]) { 543 log("unable to usb_alloc_urb(), OOM!?\n"); 544 *ret = -ENOMEM; 545 return urbs; 546 } 547 548 urbs[i]->transfer_buffer = 549 kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL); 550 if (!urbs[i]->transfer_buffer) { 551 log("unable to kmalloc() transfer buffer, OOM!?\n"); 552 *ret = -ENOMEM; 553 return urbs; 554 } 555 556 for (frame = 0; frame < FRAMES_PER_URB; frame++) { 557 struct usb_iso_packet_descriptor *iso = 558 &urbs[i]->iso_frame_desc[frame]; 559 560 iso->offset = BYTES_PER_FRAME * frame; 561 iso->length = BYTES_PER_FRAME; 562 } 563 564 urbs[i]->dev = usb_dev; 565 urbs[i]->pipe = pipe; 566 urbs[i]->transfer_buffer_length = FRAMES_PER_URB 567 * BYTES_PER_FRAME; 568 urbs[i]->context = &dev->data_cb_info[i]; 569 urbs[i]->interval = 1; 570 urbs[i]->transfer_flags = URB_ISO_ASAP; 571 urbs[i]->number_of_packets = FRAMES_PER_URB; 572 urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ? 573 read_completed : write_completed; 574 } 575 576 *ret = 0; 577 return urbs; 578 } 579 580 static void free_urbs(struct urb **urbs) 581 { 582 int i; 583 584 if (!urbs) 585 return; 586 587 for (i = 0; i < N_URBS; i++) { 588 if (!urbs[i]) 589 continue; 590 591 usb_kill_urb(urbs[i]); 592 kfree(urbs[i]->transfer_buffer); 593 usb_free_urb(urbs[i]); 594 } 595 596 kfree(urbs); 597 } 598 599 int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev) 600 { 601 int i, ret; 602 603 dev->n_audio_in = max(dev->spec.num_analog_audio_in, 604 dev->spec.num_digital_audio_in) / 605 CHANNELS_PER_STREAM; 606 dev->n_audio_out = max(dev->spec.num_analog_audio_out, 607 dev->spec.num_digital_audio_out) / 608 CHANNELS_PER_STREAM; 609 dev->n_streams = max(dev->n_audio_in, dev->n_audio_out); 610 611 debug("dev->n_audio_in = %d\n", dev->n_audio_in); 612 debug("dev->n_audio_out = %d\n", dev->n_audio_out); 613 debug("dev->n_streams = %d\n", dev->n_streams); 614 615 if (dev->n_streams > MAX_STREAMS) { 616 log("unable to initialize device, too many streams.\n"); 617 return -EINVAL; 618 } 619 620 ret = snd_pcm_new(dev->chip.card, dev->product_name, 0, 621 dev->n_audio_out, dev->n_audio_in, &dev->pcm); 622 623 if (ret < 0) { 624 log("snd_pcm_new() returned %d\n", ret); 625 return ret; 626 } 627 628 dev->pcm->private_data = dev; 629 strcpy(dev->pcm->name, dev->product_name); 630 631 memset(dev->sub_playback, 0, sizeof(dev->sub_playback)); 632 memset(dev->sub_capture, 0, sizeof(dev->sub_capture)); 633 634 memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware, 635 sizeof(snd_usb_caiaq_pcm_hardware)); 636 637 /* setup samplerates */ 638 dev->samplerates = dev->pcm_info.rates; 639 switch (dev->chip.usb_id) { 640 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1): 641 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3): 642 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO): 643 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE): 644 dev->samplerates |= SNDRV_PCM_RATE_192000; 645 /* fall thru */ 646 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ): 647 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ): 648 dev->samplerates |= SNDRV_PCM_RATE_88200; 649 break; 650 } 651 652 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK, 653 &snd_usb_caiaq_ops); 654 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE, 655 &snd_usb_caiaq_ops); 656 657 snd_pcm_lib_preallocate_pages_for_all(dev->pcm, 658 SNDRV_DMA_TYPE_CONTINUOUS, 659 snd_dma_continuous_data(GFP_KERNEL), 660 MAX_BUFFER_SIZE, MAX_BUFFER_SIZE); 661 662 dev->data_cb_info = 663 kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS, 664 GFP_KERNEL); 665 666 if (!dev->data_cb_info) 667 return -ENOMEM; 668 669 for (i = 0; i < N_URBS; i++) { 670 dev->data_cb_info[i].dev = dev; 671 dev->data_cb_info[i].index = i; 672 } 673 674 dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret); 675 if (ret < 0) { 676 kfree(dev->data_cb_info); 677 free_urbs(dev->data_urbs_in); 678 return ret; 679 } 680 681 dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret); 682 if (ret < 0) { 683 kfree(dev->data_cb_info); 684 free_urbs(dev->data_urbs_in); 685 free_urbs(dev->data_urbs_out); 686 return ret; 687 } 688 689 return 0; 690 } 691 692 void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev) 693 { 694 debug("%s(%p)\n", __func__, dev); 695 stream_stop(dev); 696 free_urbs(dev->data_urbs_in); 697 free_urbs(dev->data_urbs_out); 698 kfree(dev->data_cb_info); 699 } 700 701