1 /* 2 * US-X2Y AUDIO 3 * Copyright (c) 2002-2004 by Karsten Wiese 4 * 5 * based on 6 * 7 * (Tentative) USB Audio Driver for ALSA 8 * 9 * Main and PCM part 10 * 11 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> 12 * 13 * Many codes borrowed from audio.c by 14 * Alan Cox (alan@lxorguk.ukuu.org.uk) 15 * Thomas Sailer (sailer@ife.ee.ethz.ch) 16 * 17 * 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License as published by 20 * the Free Software Foundation; either version 2 of the License, or 21 * (at your option) any later version. 22 * 23 * This program is distributed in the hope that it will be useful, 24 * but WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 * GNU General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 31 */ 32 33 34 #include <linux/interrupt.h> 35 #include <linux/slab.h> 36 #include <linux/usb.h> 37 #include <linux/moduleparam.h> 38 #include <sound/core.h> 39 #include <sound/info.h> 40 #include <sound/pcm.h> 41 #include <sound/pcm_params.h> 42 #include "usx2y.h" 43 #include "usbusx2y.h" 44 45 #define USX2Y_NRPACKS 4 /* Default value used for nr of packs per urb. 46 1 to 4 have been tested ok on uhci. 47 To use 3 on ohci, you'd need a patch: 48 look for "0000425-linux-2.6.9-rc4-mm1_ohci-hcd.patch.gz" on 49 "https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000425" 50 . 51 1, 2 and 4 work out of the box on ohci, if I recall correctly. 52 Bigger is safer operation, 53 smaller gives lower latencies. 54 */ 55 #define USX2Y_NRPACKS_VARIABLE y /* If your system works ok with this module's parameter 56 nrpacks set to 1, you might as well comment 57 this #define out, and thereby produce smaller, faster code. 58 You'd also set USX2Y_NRPACKS to 1 then. 59 */ 60 61 #ifdef USX2Y_NRPACKS_VARIABLE 62 static int nrpacks = USX2Y_NRPACKS; /* number of packets per urb */ 63 #define nr_of_packs() nrpacks 64 module_param(nrpacks, int, 0444); 65 MODULE_PARM_DESC(nrpacks, "Number of packets per URB."); 66 #else 67 #define nr_of_packs() USX2Y_NRPACKS 68 #endif 69 70 71 static int usX2Y_urb_capt_retire(struct snd_usX2Y_substream *subs) 72 { 73 struct urb *urb = subs->completed_urb; 74 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; 75 unsigned char *cp; 76 int i, len, lens = 0, hwptr_done = subs->hwptr_done; 77 struct usX2Ydev *usX2Y = subs->usX2Y; 78 79 for (i = 0; i < nr_of_packs(); i++) { 80 cp = (unsigned char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset; 81 if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */ 82 snd_printk(KERN_ERR "active frame status %i. " 83 "Most probably some hardware problem.\n", 84 urb->iso_frame_desc[i].status); 85 return urb->iso_frame_desc[i].status; 86 } 87 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride; 88 if (! len) { 89 snd_printd("0 == len ERROR!\n"); 90 continue; 91 } 92 93 /* copy a data chunk */ 94 if ((hwptr_done + len) > runtime->buffer_size) { 95 int cnt = runtime->buffer_size - hwptr_done; 96 int blen = cnt * usX2Y->stride; 97 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen); 98 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen); 99 } else { 100 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, 101 len * usX2Y->stride); 102 } 103 lens += len; 104 if ((hwptr_done += len) >= runtime->buffer_size) 105 hwptr_done -= runtime->buffer_size; 106 } 107 108 subs->hwptr_done = hwptr_done; 109 subs->transfer_done += lens; 110 /* update the pointer, call callback if necessary */ 111 if (subs->transfer_done >= runtime->period_size) { 112 subs->transfer_done -= runtime->period_size; 113 snd_pcm_period_elapsed(subs->pcm_substream); 114 } 115 return 0; 116 } 117 /* 118 * prepare urb for playback data pipe 119 * 120 * we copy the data directly from the pcm buffer. 121 * the current position to be copied is held in hwptr field. 122 * since a urb can handle only a single linear buffer, if the total 123 * transferred area overflows the buffer boundary, we cannot send 124 * it directly from the buffer. thus the data is once copied to 125 * a temporary buffer and urb points to that. 126 */ 127 static int usX2Y_urb_play_prepare(struct snd_usX2Y_substream *subs, 128 struct urb *cap_urb, 129 struct urb *urb) 130 { 131 int count, counts, pack; 132 struct usX2Ydev *usX2Y = subs->usX2Y; 133 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; 134 135 count = 0; 136 for (pack = 0; pack < nr_of_packs(); pack++) { 137 /* calculate the size of a packet */ 138 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride; 139 count += counts; 140 if (counts < 43 || counts > 50) { 141 snd_printk(KERN_ERR "should not be here with counts=%i\n", counts); 142 return -EPIPE; 143 } 144 /* set up descriptor */ 145 urb->iso_frame_desc[pack].offset = pack ? 146 urb->iso_frame_desc[pack - 1].offset + 147 urb->iso_frame_desc[pack - 1].length : 148 0; 149 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length; 150 } 151 if (atomic_read(&subs->state) >= state_PRERUNNING) 152 if (subs->hwptr + count > runtime->buffer_size) { 153 /* err, the transferred area goes over buffer boundary. 154 * copy the data to the temp buffer. 155 */ 156 int len; 157 len = runtime->buffer_size - subs->hwptr; 158 urb->transfer_buffer = subs->tmpbuf; 159 memcpy(subs->tmpbuf, runtime->dma_area + 160 subs->hwptr * usX2Y->stride, len * usX2Y->stride); 161 memcpy(subs->tmpbuf + len * usX2Y->stride, 162 runtime->dma_area, (count - len) * usX2Y->stride); 163 subs->hwptr += count; 164 subs->hwptr -= runtime->buffer_size; 165 } else { 166 /* set the buffer pointer */ 167 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride; 168 if ((subs->hwptr += count) >= runtime->buffer_size) 169 subs->hwptr -= runtime->buffer_size; 170 } 171 else 172 urb->transfer_buffer = subs->tmpbuf; 173 urb->transfer_buffer_length = count * usX2Y->stride; 174 return 0; 175 } 176 177 /* 178 * process after playback data complete 179 * 180 * update the current position and call callback if a period is processed. 181 */ 182 static void usX2Y_urb_play_retire(struct snd_usX2Y_substream *subs, struct urb *urb) 183 { 184 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; 185 int len = urb->actual_length / subs->usX2Y->stride; 186 187 subs->transfer_done += len; 188 subs->hwptr_done += len; 189 if (subs->hwptr_done >= runtime->buffer_size) 190 subs->hwptr_done -= runtime->buffer_size; 191 if (subs->transfer_done >= runtime->period_size) { 192 subs->transfer_done -= runtime->period_size; 193 snd_pcm_period_elapsed(subs->pcm_substream); 194 } 195 } 196 197 static int usX2Y_urb_submit(struct snd_usX2Y_substream *subs, struct urb *urb, int frame) 198 { 199 int err; 200 if (!urb) 201 return -ENODEV; 202 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks 203 urb->hcpriv = NULL; 204 urb->dev = subs->usX2Y->dev; /* we need to set this at each time */ 205 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 206 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err); 207 return err; 208 } 209 return 0; 210 } 211 212 static inline int usX2Y_usbframe_complete(struct snd_usX2Y_substream *capsubs, 213 struct snd_usX2Y_substream *playbacksubs, 214 int frame) 215 { 216 int err, state; 217 struct urb *urb = playbacksubs->completed_urb; 218 219 state = atomic_read(&playbacksubs->state); 220 if (NULL != urb) { 221 if (state == state_RUNNING) 222 usX2Y_urb_play_retire(playbacksubs, urb); 223 else if (state >= state_PRERUNNING) 224 atomic_inc(&playbacksubs->state); 225 } else { 226 switch (state) { 227 case state_STARTING1: 228 urb = playbacksubs->urb[0]; 229 atomic_inc(&playbacksubs->state); 230 break; 231 case state_STARTING2: 232 urb = playbacksubs->urb[1]; 233 atomic_inc(&playbacksubs->state); 234 break; 235 } 236 } 237 if (urb) { 238 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) || 239 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) { 240 return err; 241 } 242 } 243 244 playbacksubs->completed_urb = NULL; 245 246 state = atomic_read(&capsubs->state); 247 if (state >= state_PREPARED) { 248 if (state == state_RUNNING) { 249 if ((err = usX2Y_urb_capt_retire(capsubs))) 250 return err; 251 } else if (state >= state_PRERUNNING) 252 atomic_inc(&capsubs->state); 253 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame))) 254 return err; 255 } 256 capsubs->completed_urb = NULL; 257 return 0; 258 } 259 260 261 static void usX2Y_clients_stop(struct usX2Ydev *usX2Y) 262 { 263 int s, u; 264 265 for (s = 0; s < 4; s++) { 266 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 267 if (subs) { 268 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state)); 269 atomic_set(&subs->state, state_STOPPED); 270 } 271 } 272 for (s = 0; s < 4; s++) { 273 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 274 if (subs) { 275 if (atomic_read(&subs->state) >= state_PRERUNNING) { 276 unsigned long flags; 277 278 snd_pcm_stream_lock_irqsave(subs->pcm_substream, flags); 279 snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); 280 snd_pcm_stream_unlock_irqrestore(subs->pcm_substream, flags); 281 } 282 for (u = 0; u < NRURBS; u++) { 283 struct urb *urb = subs->urb[u]; 284 if (NULL != urb) 285 snd_printdd("%i status=%i start_frame=%i\n", 286 u, urb->status, urb->start_frame); 287 } 288 } 289 } 290 usX2Y->prepare_subs = NULL; 291 wake_up(&usX2Y->prepare_wait_queue); 292 } 293 294 static void usX2Y_error_urb_status(struct usX2Ydev *usX2Y, 295 struct snd_usX2Y_substream *subs, struct urb *urb) 296 { 297 snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status); 298 urb->status = 0; 299 usX2Y_clients_stop(usX2Y); 300 } 301 302 static void usX2Y_error_sequence(struct usX2Ydev *usX2Y, 303 struct snd_usX2Y_substream *subs, struct urb *urb) 304 { 305 snd_printk(KERN_ERR 306 "Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n" 307 "Most probably some urb of usb-frame %i is still missing.\n" 308 "Cause could be too long delays in usb-hcd interrupt handling.\n", 309 usb_get_current_frame_number(usX2Y->dev), 310 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 311 usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame); 312 usX2Y_clients_stop(usX2Y); 313 } 314 315 static void i_usX2Y_urb_complete(struct urb *urb) 316 { 317 struct snd_usX2Y_substream *subs = urb->context; 318 struct usX2Ydev *usX2Y = subs->usX2Y; 319 320 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) { 321 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", 322 usb_get_current_frame_number(usX2Y->dev), 323 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 324 urb->status, urb->start_frame); 325 return; 326 } 327 if (unlikely(urb->status)) { 328 usX2Y_error_urb_status(usX2Y, subs, urb); 329 return; 330 } 331 if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF))) 332 subs->completed_urb = urb; 333 else { 334 usX2Y_error_sequence(usX2Y, subs, urb); 335 return; 336 } 337 { 338 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE], 339 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 340 if (capsubs->completed_urb && 341 atomic_read(&capsubs->state) >= state_PREPARED && 342 (playbacksubs->completed_urb || 343 atomic_read(&playbacksubs->state) < state_PREPARED)) { 344 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) 345 usX2Y->wait_iso_frame += nr_of_packs(); 346 else { 347 snd_printdd("\n"); 348 usX2Y_clients_stop(usX2Y); 349 } 350 } 351 } 352 } 353 354 static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y, 355 void (*complete)(struct urb *)) 356 { 357 int s, u; 358 for (s = 0; s < 4; s++) { 359 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 360 if (NULL != subs) 361 for (u = 0; u < NRURBS; u++) { 362 struct urb * urb = subs->urb[u]; 363 if (NULL != urb) 364 urb->complete = complete; 365 } 366 } 367 } 368 369 static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y) 370 { 371 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete); 372 usX2Y->prepare_subs = NULL; 373 } 374 375 static void i_usX2Y_subs_startup(struct urb *urb) 376 { 377 struct snd_usX2Y_substream *subs = urb->context; 378 struct usX2Ydev *usX2Y = subs->usX2Y; 379 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs; 380 if (NULL != prepare_subs) 381 if (urb->start_frame == prepare_subs->urb[0]->start_frame) { 382 usX2Y_subs_startup_finish(usX2Y); 383 atomic_inc(&prepare_subs->state); 384 wake_up(&usX2Y->prepare_wait_queue); 385 } 386 387 i_usX2Y_urb_complete(urb); 388 } 389 390 static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs) 391 { 392 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", 393 subs, subs->endpoint, subs->urb[0], subs->urb[1]); 394 /* reset the pointer */ 395 subs->hwptr = 0; 396 subs->hwptr_done = 0; 397 subs->transfer_done = 0; 398 } 399 400 401 static void usX2Y_urb_release(struct urb **urb, int free_tb) 402 { 403 if (*urb) { 404 usb_kill_urb(*urb); 405 if (free_tb) 406 kfree((*urb)->transfer_buffer); 407 usb_free_urb(*urb); 408 *urb = NULL; 409 } 410 } 411 /* 412 * release a substreams urbs 413 */ 414 static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs) 415 { 416 int i; 417 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint); 418 for (i = 0; i < NRURBS; i++) 419 usX2Y_urb_release(subs->urb + i, 420 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]); 421 422 kfree(subs->tmpbuf); 423 subs->tmpbuf = NULL; 424 } 425 /* 426 * initialize a substream's urbs 427 */ 428 static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs) 429 { 430 int i; 431 unsigned int pipe; 432 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 433 struct usb_device *dev = subs->usX2Y->dev; 434 435 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) : 436 usb_rcvisocpipe(dev, subs->endpoint); 437 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback); 438 if (!subs->maxpacksize) 439 return -EINVAL; 440 441 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */ 442 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL); 443 if (NULL == subs->tmpbuf) { 444 snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); 445 return -ENOMEM; 446 } 447 } 448 /* allocate and initialize data urbs */ 449 for (i = 0; i < NRURBS; i++) { 450 struct urb **purb = subs->urb + i; 451 if (*purb) { 452 usb_kill_urb(*purb); 453 continue; 454 } 455 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL); 456 if (NULL == *purb) { 457 usX2Y_urbs_release(subs); 458 return -ENOMEM; 459 } 460 if (!is_playback && !(*purb)->transfer_buffer) { 461 /* allocate a capture buffer per urb */ 462 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); 463 if (NULL == (*purb)->transfer_buffer) { 464 usX2Y_urbs_release(subs); 465 return -ENOMEM; 466 } 467 } 468 (*purb)->dev = dev; 469 (*purb)->pipe = pipe; 470 (*purb)->number_of_packets = nr_of_packs(); 471 (*purb)->context = subs; 472 (*purb)->interval = 1; 473 (*purb)->complete = i_usX2Y_subs_startup; 474 } 475 return 0; 476 } 477 478 static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs) 479 { 480 struct usX2Ydev *usX2Y = subs->usX2Y; 481 usX2Y->prepare_subs = subs; 482 subs->urb[0]->start_frame = -1; 483 wmb(); 484 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup); 485 } 486 487 static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs) 488 { 489 int i, err; 490 struct usX2Ydev *usX2Y = subs->usX2Y; 491 492 if ((err = usX2Y_urbs_allocate(subs)) < 0) 493 return err; 494 subs->completed_urb = NULL; 495 for (i = 0; i < 4; i++) { 496 struct snd_usX2Y_substream *subs = usX2Y->subs[i]; 497 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED) 498 goto start; 499 } 500 501 start: 502 usX2Y_subs_startup(subs); 503 for (i = 0; i < NRURBS; i++) { 504 struct urb *urb = subs->urb[i]; 505 if (usb_pipein(urb->pipe)) { 506 unsigned long pack; 507 if (0 == i) 508 atomic_set(&subs->state, state_STARTING3); 509 urb->dev = usX2Y->dev; 510 for (pack = 0; pack < nr_of_packs(); pack++) { 511 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack; 512 urb->iso_frame_desc[pack].length = subs->maxpacksize; 513 } 514 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs(); 515 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 516 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err); 517 err = -EPIPE; 518 goto cleanup; 519 } else 520 if (i == 0) 521 usX2Y->wait_iso_frame = urb->start_frame; 522 urb->transfer_flags = 0; 523 } else { 524 atomic_set(&subs->state, state_STARTING1); 525 break; 526 } 527 } 528 err = 0; 529 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs); 530 if (atomic_read(&subs->state) != state_PREPARED) 531 err = -EPIPE; 532 533 cleanup: 534 if (err) { 535 usX2Y_subs_startup_finish(usX2Y); 536 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything 537 } 538 return err; 539 } 540 541 /* 542 * return the current pcm pointer. just return the hwptr_done value. 543 */ 544 static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream) 545 { 546 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 547 return subs->hwptr_done; 548 } 549 /* 550 * start/stop substream 551 */ 552 static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 553 { 554 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 555 556 switch (cmd) { 557 case SNDRV_PCM_TRIGGER_START: 558 snd_printdd("snd_usX2Y_pcm_trigger(START)\n"); 559 if (atomic_read(&subs->state) == state_PREPARED && 560 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) { 561 atomic_set(&subs->state, state_PRERUNNING); 562 } else { 563 snd_printdd("\n"); 564 return -EPIPE; 565 } 566 break; 567 case SNDRV_PCM_TRIGGER_STOP: 568 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n"); 569 if (atomic_read(&subs->state) >= state_PRERUNNING) 570 atomic_set(&subs->state, state_PREPARED); 571 break; 572 default: 573 return -EINVAL; 574 } 575 return 0; 576 } 577 578 579 /* 580 * allocate a buffer, setup samplerate 581 * 582 * so far we use a physically linear buffer although packetize transfer 583 * doesn't need a continuous area. 584 * if sg buffer is supported on the later version of alsa, we'll follow 585 * that. 586 */ 587 static struct s_c2 588 { 589 char c1, c2; 590 } 591 SetRate44100[] = 592 { 593 { 0x14, 0x08}, // this line sets 44100, well actually a little less 594 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 595 { 0x18, 0x42}, 596 { 0x18, 0x45}, 597 { 0x18, 0x46}, 598 { 0x18, 0x48}, 599 { 0x18, 0x4A}, 600 { 0x18, 0x4C}, 601 { 0x18, 0x4E}, 602 { 0x18, 0x50}, 603 { 0x18, 0x52}, 604 { 0x18, 0x54}, 605 { 0x18, 0x56}, 606 { 0x18, 0x58}, 607 { 0x18, 0x5A}, 608 { 0x18, 0x5C}, 609 { 0x18, 0x5E}, 610 { 0x18, 0x60}, 611 { 0x18, 0x62}, 612 { 0x18, 0x64}, 613 { 0x18, 0x66}, 614 { 0x18, 0x68}, 615 { 0x18, 0x6A}, 616 { 0x18, 0x6C}, 617 { 0x18, 0x6E}, 618 { 0x18, 0x70}, 619 { 0x18, 0x72}, 620 { 0x18, 0x74}, 621 { 0x18, 0x76}, 622 { 0x18, 0x78}, 623 { 0x18, 0x7A}, 624 { 0x18, 0x7C}, 625 { 0x18, 0x7E} 626 }; 627 static struct s_c2 SetRate48000[] = 628 { 629 { 0x14, 0x09}, // this line sets 48000, well actually a little less 630 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 631 { 0x18, 0x42}, 632 { 0x18, 0x45}, 633 { 0x18, 0x46}, 634 { 0x18, 0x48}, 635 { 0x18, 0x4A}, 636 { 0x18, 0x4C}, 637 { 0x18, 0x4E}, 638 { 0x18, 0x50}, 639 { 0x18, 0x52}, 640 { 0x18, 0x54}, 641 { 0x18, 0x56}, 642 { 0x18, 0x58}, 643 { 0x18, 0x5A}, 644 { 0x18, 0x5C}, 645 { 0x18, 0x5E}, 646 { 0x18, 0x60}, 647 { 0x18, 0x62}, 648 { 0x18, 0x64}, 649 { 0x18, 0x66}, 650 { 0x18, 0x68}, 651 { 0x18, 0x6A}, 652 { 0x18, 0x6C}, 653 { 0x18, 0x6E}, 654 { 0x18, 0x70}, 655 { 0x18, 0x73}, 656 { 0x18, 0x74}, 657 { 0x18, 0x76}, 658 { 0x18, 0x78}, 659 { 0x18, 0x7A}, 660 { 0x18, 0x7C}, 661 { 0x18, 0x7E} 662 }; 663 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) 664 665 static void i_usX2Y_04Int(struct urb *urb) 666 { 667 struct usX2Ydev *usX2Y = urb->context; 668 669 if (urb->status) 670 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status); 671 if (0 == --usX2Y->US04->len) 672 wake_up(&usX2Y->In04WaitQueue); 673 } 674 675 static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate) 676 { 677 int err = 0, i; 678 struct snd_usX2Y_urbSeq *us = NULL; 679 int *usbdata = NULL; 680 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; 681 682 if (usX2Y->rate != rate) { 683 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); 684 if (NULL == us) { 685 err = -ENOMEM; 686 goto cleanup; 687 } 688 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL); 689 if (NULL == usbdata) { 690 err = -ENOMEM; 691 goto cleanup; 692 } 693 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 694 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { 695 err = -ENOMEM; 696 goto cleanup; 697 } 698 ((char*)(usbdata + i))[0] = ra[i].c1; 699 ((char*)(usbdata + i))[1] = ra[i].c2; 700 usb_fill_bulk_urb(us->urb[i], usX2Y->dev, usb_sndbulkpipe(usX2Y->dev, 4), 701 usbdata + i, 2, i_usX2Y_04Int, usX2Y); 702 } 703 us->submitted = 0; 704 us->len = NOOF_SETRATE_URBS; 705 usX2Y->US04 = us; 706 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); 707 usX2Y->US04 = NULL; 708 if (us->len) 709 err = -ENODEV; 710 cleanup: 711 if (us) { 712 us->submitted = 2*NOOF_SETRATE_URBS; 713 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 714 struct urb *urb = us->urb[i]; 715 if (urb->status) { 716 if (!err) 717 err = -ENODEV; 718 usb_kill_urb(urb); 719 } 720 usb_free_urb(urb); 721 } 722 usX2Y->US04 = NULL; 723 kfree(usbdata); 724 kfree(us); 725 if (!err) 726 usX2Y->rate = rate; 727 } 728 } 729 730 return err; 731 } 732 733 734 static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format) 735 { 736 int alternate, err; 737 struct list_head* p; 738 if (format == SNDRV_PCM_FORMAT_S24_3LE) { 739 alternate = 2; 740 usX2Y->stride = 6; 741 } else { 742 alternate = 1; 743 usX2Y->stride = 4; 744 } 745 list_for_each(p, &usX2Y->midi_list) { 746 snd_usbmidi_input_stop(p); 747 } 748 usb_kill_urb(usX2Y->In04urb); 749 if ((err = usb_set_interface(usX2Y->dev, 0, alternate))) { 750 snd_printk(KERN_ERR "usb_set_interface error \n"); 751 return err; 752 } 753 usX2Y->In04urb->dev = usX2Y->dev; 754 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); 755 list_for_each(p, &usX2Y->midi_list) { 756 snd_usbmidi_input_start(p); 757 } 758 usX2Y->format = format; 759 usX2Y->rate = 0; 760 return err; 761 } 762 763 764 static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream, 765 struct snd_pcm_hw_params *hw_params) 766 { 767 int err = 0; 768 unsigned int rate = params_rate(hw_params); 769 snd_pcm_format_t format = params_format(hw_params); 770 struct snd_card *card = substream->pstr->pcm->card; 771 struct list_head *list; 772 773 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); 774 // all pcm substreams off one usX2Y have to operate at the same rate & format 775 list_for_each(list, &card->devices) { 776 struct snd_device *dev; 777 struct snd_pcm *pcm; 778 int s; 779 dev = snd_device(list); 780 if (dev->type != SNDRV_DEV_PCM) 781 continue; 782 pcm = dev->device_data; 783 for (s = 0; s < 2; ++s) { 784 struct snd_pcm_substream *test_substream; 785 test_substream = pcm->streams[s].substream; 786 if (test_substream && test_substream != substream && 787 test_substream->runtime && 788 ((test_substream->runtime->format && 789 test_substream->runtime->format != format) || 790 (test_substream->runtime->rate && 791 test_substream->runtime->rate != rate))) 792 return -EINVAL; 793 } 794 } 795 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { 796 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", 797 substream, params_buffer_bytes(hw_params), err); 798 return err; 799 } 800 return 0; 801 } 802 803 /* 804 * free the buffer 805 */ 806 static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream) 807 { 808 struct snd_pcm_runtime *runtime = substream->runtime; 809 struct snd_usX2Y_substream *subs = runtime->private_data; 810 mutex_lock(&subs->usX2Y->prepare_mutex); 811 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); 812 813 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { 814 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 815 atomic_set(&subs->state, state_STOPPED); 816 usX2Y_urbs_release(subs); 817 if (!cap_subs->pcm_substream || 818 !cap_subs->pcm_substream->runtime || 819 !cap_subs->pcm_substream->runtime->status || 820 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { 821 atomic_set(&cap_subs->state, state_STOPPED); 822 usX2Y_urbs_release(cap_subs); 823 } 824 } else { 825 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 826 if (atomic_read(&playback_subs->state) < state_PREPARED) { 827 atomic_set(&subs->state, state_STOPPED); 828 usX2Y_urbs_release(subs); 829 } 830 } 831 mutex_unlock(&subs->usX2Y->prepare_mutex); 832 return snd_pcm_lib_free_pages(substream); 833 } 834 /* 835 * prepare callback 836 * 837 * set format and initialize urbs 838 */ 839 static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream) 840 { 841 struct snd_pcm_runtime *runtime = substream->runtime; 842 struct snd_usX2Y_substream *subs = runtime->private_data; 843 struct usX2Ydev *usX2Y = subs->usX2Y; 844 struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 845 int err = 0; 846 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); 847 848 mutex_lock(&usX2Y->prepare_mutex); 849 usX2Y_subs_prepare(subs); 850 // Start hardware streams 851 // SyncStream first.... 852 if (atomic_read(&capsubs->state) < state_PREPARED) { 853 if (usX2Y->format != runtime->format) 854 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) 855 goto up_prepare_mutex; 856 if (usX2Y->rate != runtime->rate) 857 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) 858 goto up_prepare_mutex; 859 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); 860 if (0 > (err = usX2Y_urbs_start(capsubs))) 861 goto up_prepare_mutex; 862 } 863 864 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) 865 err = usX2Y_urbs_start(subs); 866 867 up_prepare_mutex: 868 mutex_unlock(&usX2Y->prepare_mutex); 869 return err; 870 } 871 872 static struct snd_pcm_hardware snd_usX2Y_2c = 873 { 874 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 875 SNDRV_PCM_INFO_BLOCK_TRANSFER | 876 SNDRV_PCM_INFO_MMAP_VALID | 877 SNDRV_PCM_INFO_BATCH), 878 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, 879 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 880 .rate_min = 44100, 881 .rate_max = 48000, 882 .channels_min = 2, 883 .channels_max = 2, 884 .buffer_bytes_max = (2*128*1024), 885 .period_bytes_min = 64, 886 .period_bytes_max = (128*1024), 887 .periods_min = 2, 888 .periods_max = 1024, 889 .fifo_size = 0 890 }; 891 892 893 894 static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream) 895 { 896 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **) 897 snd_pcm_substream_chip(substream))[substream->stream]; 898 struct snd_pcm_runtime *runtime = substream->runtime; 899 900 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) 901 return -EBUSY; 902 903 runtime->hw = snd_usX2Y_2c; 904 runtime->private_data = subs; 905 subs->pcm_substream = substream; 906 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); 907 return 0; 908 } 909 910 911 912 static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream) 913 { 914 struct snd_pcm_runtime *runtime = substream->runtime; 915 struct snd_usX2Y_substream *subs = runtime->private_data; 916 917 subs->pcm_substream = NULL; 918 919 return 0; 920 } 921 922 923 static struct snd_pcm_ops snd_usX2Y_pcm_ops = 924 { 925 .open = snd_usX2Y_pcm_open, 926 .close = snd_usX2Y_pcm_close, 927 .ioctl = snd_pcm_lib_ioctl, 928 .hw_params = snd_usX2Y_pcm_hw_params, 929 .hw_free = snd_usX2Y_pcm_hw_free, 930 .prepare = snd_usX2Y_pcm_prepare, 931 .trigger = snd_usX2Y_pcm_trigger, 932 .pointer = snd_usX2Y_pcm_pointer, 933 }; 934 935 936 /* 937 * free a usb stream instance 938 */ 939 static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream) 940 { 941 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); 942 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; 943 944 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); 945 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; 946 } 947 948 static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm) 949 { 950 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data; 951 if (usX2Y_stream) 952 usX2Y_audio_stream_free(usX2Y_stream); 953 } 954 955 static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint) 956 { 957 struct snd_pcm *pcm; 958 int err, i; 959 struct snd_usX2Y_substream **usX2Y_substream = 960 usX2Y(card)->subs + 2 * usX2Y(card)->pcm_devs; 961 962 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; 963 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) { 964 usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL); 965 if (NULL == usX2Y_substream[i]) { 966 snd_printk(KERN_ERR "cannot malloc\n"); 967 return -ENOMEM; 968 } 969 usX2Y_substream[i]->usX2Y = usX2Y(card); 970 } 971 972 if (playback_endpoint) 973 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint; 974 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint; 975 976 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->pcm_devs, 977 playback_endpoint ? 1 : 0, 1, 978 &pcm); 979 if (err < 0) { 980 usX2Y_audio_stream_free(usX2Y_substream); 981 return err; 982 } 983 984 if (playback_endpoint) 985 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops); 986 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops); 987 988 pcm->private_data = usX2Y_substream; 989 pcm->private_free = snd_usX2Y_pcm_private_free; 990 pcm->info_flags = 0; 991 992 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->pcm_devs); 993 994 if ((playback_endpoint && 995 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream, 996 SNDRV_DMA_TYPE_CONTINUOUS, 997 snd_dma_continuous_data(GFP_KERNEL), 998 64*1024, 128*1024))) || 999 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 1000 SNDRV_DMA_TYPE_CONTINUOUS, 1001 snd_dma_continuous_data(GFP_KERNEL), 1002 64*1024, 128*1024))) { 1003 snd_usX2Y_pcm_private_free(pcm); 1004 return err; 1005 } 1006 usX2Y(card)->pcm_devs++; 1007 1008 return 0; 1009 } 1010 1011 /* 1012 * create a chip instance and set its names. 1013 */ 1014 int usX2Y_audio_create(struct snd_card *card) 1015 { 1016 int err = 0; 1017 1018 INIT_LIST_HEAD(&usX2Y(card)->pcm_list); 1019 1020 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8))) 1021 return err; 1022 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) == USB_ID_US428) 1023 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA))) 1024 return err; 1025 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) != USB_ID_US122) 1026 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122. 1027 return err; 1028 } 1029