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