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->period_out_count[index] = BYTES_PER_SAMPLE + 1; 200 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1; 201 } else { 202 dev->period_in_count[index] = BYTES_PER_SAMPLE; 203 dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE; 204 } 205 206 if (dev->streaming) 207 return 0; 208 209 /* the first client that opens a stream defines the sample rate 210 * setting for all subsequent calls, until the last client closed. */ 211 for (i=0; i < ARRAY_SIZE(rates); i++) 212 if (runtime->rate == rates[i]) 213 dev->pcm_info.rates = 1 << i; 214 215 snd_pcm_limit_hw_rates(runtime); 216 217 bytes_per_sample = BYTES_PER_SAMPLE; 218 if (dev->spec.data_alignment == 2) 219 bytes_per_sample++; 220 221 bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE) 222 * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams; 223 224 if (bpp > MAX_ENDPOINT_SIZE) 225 bpp = MAX_ENDPOINT_SIZE; 226 227 ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate, 228 runtime->sample_bits, bpp); 229 if (ret) 230 return ret; 231 232 ret = stream_start(dev); 233 if (ret) 234 return ret; 235 236 dev->output_running = 0; 237 wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ); 238 if (!dev->output_running) { 239 stream_stop(dev); 240 return -EPIPE; 241 } 242 243 return 0; 244 } 245 246 static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd) 247 { 248 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub); 249 250 switch (cmd) { 251 case SNDRV_PCM_TRIGGER_START: 252 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 253 activate_substream(dev, sub); 254 break; 255 case SNDRV_PCM_TRIGGER_STOP: 256 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 257 deactivate_substream(dev, sub); 258 break; 259 default: 260 return -EINVAL; 261 } 262 263 return 0; 264 } 265 266 static snd_pcm_uframes_t 267 snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub) 268 { 269 int index = sub->number; 270 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub); 271 272 if (dev->input_panic || dev->output_panic) 273 return SNDRV_PCM_POS_XRUN; 274 275 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) 276 return bytes_to_frames(sub->runtime, 277 dev->audio_out_buf_pos[index]); 278 else 279 return bytes_to_frames(sub->runtime, 280 dev->audio_in_buf_pos[index]); 281 } 282 283 /* operators for both playback and capture */ 284 static struct snd_pcm_ops snd_usb_caiaq_ops = { 285 .open = snd_usb_caiaq_substream_open, 286 .close = snd_usb_caiaq_substream_close, 287 .ioctl = snd_pcm_lib_ioctl, 288 .hw_params = snd_usb_caiaq_pcm_hw_params, 289 .hw_free = snd_usb_caiaq_pcm_hw_free, 290 .prepare = snd_usb_caiaq_pcm_prepare, 291 .trigger = snd_usb_caiaq_pcm_trigger, 292 .pointer = snd_usb_caiaq_pcm_pointer 293 }; 294 295 static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev, 296 struct snd_pcm_substream **subs) 297 { 298 int stream, pb, *cnt; 299 struct snd_pcm_substream *sub; 300 301 for (stream = 0; stream < dev->n_streams; stream++) { 302 sub = subs[stream]; 303 if (!sub) 304 continue; 305 306 pb = snd_pcm_lib_period_bytes(sub); 307 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 308 &dev->period_out_count[stream] : 309 &dev->period_in_count[stream]; 310 311 if (*cnt >= pb) { 312 snd_pcm_period_elapsed(sub); 313 *cnt %= pb; 314 } 315 } 316 } 317 318 static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev, 319 const struct urb *urb, 320 const struct usb_iso_packet_descriptor *iso) 321 { 322 unsigned char *usb_buf = urb->transfer_buffer + iso->offset; 323 struct snd_pcm_substream *sub; 324 int stream, i; 325 326 if (all_substreams_zero(dev->sub_capture)) 327 return; 328 329 for (i = 0; i < iso->actual_length;) { 330 for (stream = 0; stream < dev->n_streams; stream++, i++) { 331 sub = dev->sub_capture[stream]; 332 if (sub) { 333 struct snd_pcm_runtime *rt = sub->runtime; 334 char *audio_buf = rt->dma_area; 335 int sz = frames_to_bytes(rt, rt->buffer_size); 336 audio_buf[dev->audio_in_buf_pos[stream]++] 337 = usb_buf[i]; 338 dev->period_in_count[stream]++; 339 if (dev->audio_in_buf_pos[stream] == sz) 340 dev->audio_in_buf_pos[stream] = 0; 341 } 342 } 343 } 344 } 345 346 static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev, 347 const struct urb *urb, 348 const struct usb_iso_packet_descriptor *iso) 349 { 350 unsigned char *usb_buf = urb->transfer_buffer + iso->offset; 351 unsigned char check_byte; 352 struct snd_pcm_substream *sub; 353 int stream, i; 354 355 for (i = 0; i < iso->actual_length;) { 356 if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) { 357 for (stream = 0; 358 stream < dev->n_streams; 359 stream++, i++) { 360 if (dev->first_packet) 361 continue; 362 363 check_byte = MAKE_CHECKBYTE(dev, stream, i); 364 365 if ((usb_buf[i] & 0x3f) != check_byte) 366 dev->input_panic = 1; 367 368 if (usb_buf[i] & 0x80) 369 dev->output_panic = 1; 370 } 371 } 372 dev->first_packet = 0; 373 374 for (stream = 0; stream < dev->n_streams; stream++, i++) { 375 sub = dev->sub_capture[stream]; 376 if (dev->input_panic) 377 usb_buf[i] = 0; 378 379 if (sub) { 380 struct snd_pcm_runtime *rt = sub->runtime; 381 char *audio_buf = rt->dma_area; 382 int sz = frames_to_bytes(rt, rt->buffer_size); 383 audio_buf[dev->audio_in_buf_pos[stream]++] = 384 usb_buf[i]; 385 dev->period_in_count[stream]++; 386 if (dev->audio_in_buf_pos[stream] == sz) 387 dev->audio_in_buf_pos[stream] = 0; 388 } 389 } 390 } 391 } 392 393 static void read_in_urb(struct snd_usb_caiaqdev *dev, 394 const struct urb *urb, 395 const struct usb_iso_packet_descriptor *iso) 396 { 397 if (!dev->streaming) 398 return; 399 400 if (iso->actual_length < dev->bpp) 401 return; 402 403 switch (dev->spec.data_alignment) { 404 case 0: 405 read_in_urb_mode0(dev, urb, iso); 406 break; 407 case 2: 408 read_in_urb_mode2(dev, urb, iso); 409 break; 410 } 411 412 if ((dev->input_panic || dev->output_panic) && !dev->warned) { 413 debug("streaming error detected %s %s\n", 414 dev->input_panic ? "(input)" : "", 415 dev->output_panic ? "(output)" : ""); 416 dev->warned = 1; 417 } 418 } 419 420 static void fill_out_urb(struct snd_usb_caiaqdev *dev, 421 struct urb *urb, 422 const struct usb_iso_packet_descriptor *iso) 423 { 424 unsigned char *usb_buf = urb->transfer_buffer + iso->offset; 425 struct snd_pcm_substream *sub; 426 int stream, i; 427 428 for (i = 0; i < iso->length;) { 429 for (stream = 0; stream < dev->n_streams; stream++, i++) { 430 sub = dev->sub_playback[stream]; 431 if (sub) { 432 struct snd_pcm_runtime *rt = sub->runtime; 433 char *audio_buf = rt->dma_area; 434 int sz = frames_to_bytes(rt, rt->buffer_size); 435 usb_buf[i] = 436 audio_buf[dev->audio_out_buf_pos[stream]]; 437 dev->period_out_count[stream]++; 438 dev->audio_out_buf_pos[stream]++; 439 if (dev->audio_out_buf_pos[stream] == sz) 440 dev->audio_out_buf_pos[stream] = 0; 441 } else 442 usb_buf[i] = 0; 443 } 444 445 /* fill in the check bytes */ 446 if (dev->spec.data_alignment == 2 && 447 i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 448 (dev->n_streams * CHANNELS_PER_STREAM)) 449 for (stream = 0; stream < dev->n_streams; stream++, i++) 450 usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i); 451 } 452 } 453 454 static void read_completed(struct urb *urb) 455 { 456 struct snd_usb_caiaq_cb_info *info = urb->context; 457 struct snd_usb_caiaqdev *dev; 458 struct urb *out; 459 int frame, len, send_it = 0, outframe = 0; 460 461 if (urb->status || !info) 462 return; 463 464 dev = info->dev; 465 466 if (!dev->streaming) 467 return; 468 469 out = dev->data_urbs_out[info->index]; 470 471 /* read the recently received packet and send back one which has 472 * the same layout */ 473 for (frame = 0; frame < FRAMES_PER_URB; frame++) { 474 if (urb->iso_frame_desc[frame].status) 475 continue; 476 477 len = urb->iso_frame_desc[outframe].actual_length; 478 out->iso_frame_desc[outframe].length = len; 479 out->iso_frame_desc[outframe].actual_length = 0; 480 out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame; 481 482 if (len > 0) { 483 spin_lock(&dev->spinlock); 484 fill_out_urb(dev, out, &out->iso_frame_desc[outframe]); 485 read_in_urb(dev, urb, &urb->iso_frame_desc[frame]); 486 spin_unlock(&dev->spinlock); 487 check_for_elapsed_periods(dev, dev->sub_playback); 488 check_for_elapsed_periods(dev, dev->sub_capture); 489 send_it = 1; 490 } 491 492 outframe++; 493 } 494 495 if (send_it) { 496 out->number_of_packets = FRAMES_PER_URB; 497 out->transfer_flags = URB_ISO_ASAP; 498 usb_submit_urb(out, GFP_ATOMIC); 499 } 500 501 /* re-submit inbound urb */ 502 for (frame = 0; frame < FRAMES_PER_URB; frame++) { 503 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame; 504 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME; 505 urb->iso_frame_desc[frame].actual_length = 0; 506 } 507 508 urb->number_of_packets = FRAMES_PER_URB; 509 urb->transfer_flags = URB_ISO_ASAP; 510 usb_submit_urb(urb, GFP_ATOMIC); 511 } 512 513 static void write_completed(struct urb *urb) 514 { 515 struct snd_usb_caiaq_cb_info *info = urb->context; 516 struct snd_usb_caiaqdev *dev = info->dev; 517 518 if (!dev->output_running) { 519 dev->output_running = 1; 520 wake_up(&dev->prepare_wait_queue); 521 } 522 } 523 524 static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret) 525 { 526 int i, frame; 527 struct urb **urbs; 528 struct usb_device *usb_dev = dev->chip.dev; 529 unsigned int pipe; 530 531 pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ? 532 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) : 533 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE); 534 535 urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL); 536 if (!urbs) { 537 log("unable to kmalloc() urbs, OOM!?\n"); 538 *ret = -ENOMEM; 539 return NULL; 540 } 541 542 for (i = 0; i < N_URBS; i++) { 543 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL); 544 if (!urbs[i]) { 545 log("unable to usb_alloc_urb(), OOM!?\n"); 546 *ret = -ENOMEM; 547 return urbs; 548 } 549 550 urbs[i]->transfer_buffer = 551 kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL); 552 if (!urbs[i]->transfer_buffer) { 553 log("unable to kmalloc() transfer buffer, OOM!?\n"); 554 *ret = -ENOMEM; 555 return urbs; 556 } 557 558 for (frame = 0; frame < FRAMES_PER_URB; frame++) { 559 struct usb_iso_packet_descriptor *iso = 560 &urbs[i]->iso_frame_desc[frame]; 561 562 iso->offset = BYTES_PER_FRAME * frame; 563 iso->length = BYTES_PER_FRAME; 564 } 565 566 urbs[i]->dev = usb_dev; 567 urbs[i]->pipe = pipe; 568 urbs[i]->transfer_buffer_length = FRAMES_PER_URB 569 * BYTES_PER_FRAME; 570 urbs[i]->context = &dev->data_cb_info[i]; 571 urbs[i]->interval = 1; 572 urbs[i]->transfer_flags = URB_ISO_ASAP; 573 urbs[i]->number_of_packets = FRAMES_PER_URB; 574 urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ? 575 read_completed : write_completed; 576 } 577 578 *ret = 0; 579 return urbs; 580 } 581 582 static void free_urbs(struct urb **urbs) 583 { 584 int i; 585 586 if (!urbs) 587 return; 588 589 for (i = 0; i < N_URBS; i++) { 590 if (!urbs[i]) 591 continue; 592 593 usb_kill_urb(urbs[i]); 594 kfree(urbs[i]->transfer_buffer); 595 usb_free_urb(urbs[i]); 596 } 597 598 kfree(urbs); 599 } 600 601 int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev) 602 { 603 int i, ret; 604 605 dev->n_audio_in = max(dev->spec.num_analog_audio_in, 606 dev->spec.num_digital_audio_in) / 607 CHANNELS_PER_STREAM; 608 dev->n_audio_out = max(dev->spec.num_analog_audio_out, 609 dev->spec.num_digital_audio_out) / 610 CHANNELS_PER_STREAM; 611 dev->n_streams = max(dev->n_audio_in, dev->n_audio_out); 612 613 debug("dev->n_audio_in = %d\n", dev->n_audio_in); 614 debug("dev->n_audio_out = %d\n", dev->n_audio_out); 615 debug("dev->n_streams = %d\n", dev->n_streams); 616 617 if (dev->n_streams > MAX_STREAMS) { 618 log("unable to initialize device, too many streams.\n"); 619 return -EINVAL; 620 } 621 622 ret = snd_pcm_new(dev->chip.card, dev->product_name, 0, 623 dev->n_audio_out, dev->n_audio_in, &dev->pcm); 624 625 if (ret < 0) { 626 log("snd_pcm_new() returned %d\n", ret); 627 return ret; 628 } 629 630 dev->pcm->private_data = dev; 631 strcpy(dev->pcm->name, dev->product_name); 632 633 memset(dev->sub_playback, 0, sizeof(dev->sub_playback)); 634 memset(dev->sub_capture, 0, sizeof(dev->sub_capture)); 635 636 memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware, 637 sizeof(snd_usb_caiaq_pcm_hardware)); 638 639 /* setup samplerates */ 640 dev->samplerates = dev->pcm_info.rates; 641 switch (dev->chip.usb_id) { 642 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1): 643 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3): 644 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO): 645 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE): 646 dev->samplerates |= SNDRV_PCM_RATE_192000; 647 /* fall thru */ 648 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ): 649 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ): 650 dev->samplerates |= SNDRV_PCM_RATE_88200; 651 break; 652 } 653 654 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK, 655 &snd_usb_caiaq_ops); 656 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE, 657 &snd_usb_caiaq_ops); 658 659 snd_pcm_lib_preallocate_pages_for_all(dev->pcm, 660 SNDRV_DMA_TYPE_CONTINUOUS, 661 snd_dma_continuous_data(GFP_KERNEL), 662 MAX_BUFFER_SIZE, MAX_BUFFER_SIZE); 663 664 dev->data_cb_info = 665 kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS, 666 GFP_KERNEL); 667 668 if (!dev->data_cb_info) 669 return -ENOMEM; 670 671 for (i = 0; i < N_URBS; i++) { 672 dev->data_cb_info[i].dev = dev; 673 dev->data_cb_info[i].index = i; 674 } 675 676 dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret); 677 if (ret < 0) { 678 kfree(dev->data_cb_info); 679 free_urbs(dev->data_urbs_in); 680 return ret; 681 } 682 683 dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret); 684 if (ret < 0) { 685 kfree(dev->data_cb_info); 686 free_urbs(dev->data_urbs_in); 687 free_urbs(dev->data_urbs_out); 688 return ret; 689 } 690 691 return 0; 692 } 693 694 void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev) 695 { 696 debug("%s(%p)\n", __func__, dev); 697 stream_stop(dev); 698 free_urbs(dev->data_urbs_in); 699 free_urbs(dev->data_urbs_out); 700 kfree(dev->data_cb_info); 701 } 702 703