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 <sound/driver.h> 35 #include <linux/interrupt.h> 36 #include <linux/usb.h> 37 #include <sound/core.h> 38 #include <sound/info.h> 39 #include <sound/pcm.h> 40 #include <sound/pcm_params.h> 41 #include "usx2y.h" 42 #include "usbusx2y.h" 43 44 #define USX2Y_NRPACKS 4 /* Default value used for nr of packs per urb. 45 1 to 4 have been tested ok on uhci. 46 To use 3 on ohci, you'd need a patch: 47 look for "0000425-linux-2.6.9-rc4-mm1_ohci-hcd.patch.gz" on 48 "https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000425" 49 . 50 1, 2 and 4 work out of the box on ohci, if I recall correctly. 51 Bigger is safer operation, 52 smaller gives lower latencies. 53 */ 54 #define USX2Y_NRPACKS_VARIABLE y /* If your system works ok with this module's parameter 55 nrpacks set to 1, you might as well comment 56 this #define out, and thereby produce smaller, faster code. 57 You'd also set USX2Y_NRPACKS to 1 then. 58 */ 59 60 #ifdef USX2Y_NRPACKS_VARIABLE 61 static int nrpacks = USX2Y_NRPACKS; /* number of packets per urb */ 62 #define nr_of_packs() nrpacks 63 module_param(nrpacks, int, 0444); 64 MODULE_PARM_DESC(nrpacks, "Number of packets per URB."); 65 #else 66 #define nr_of_packs() USX2Y_NRPACKS 67 #endif 68 69 70 static int usX2Y_urb_capt_retire(struct snd_usX2Y_substream *subs) 71 { 72 struct urb *urb = subs->completed_urb; 73 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; 74 unsigned char *cp; 75 int i, len, lens = 0, hwptr_done = subs->hwptr_done; 76 struct usX2Ydev *usX2Y = subs->usX2Y; 77 78 for (i = 0; i < nr_of_packs(); i++) { 79 cp = (unsigned char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset; 80 if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */ 81 snd_printk(KERN_ERR "active frame status %i. " 82 "Most propably some hardware problem.\n", 83 urb->iso_frame_desc[i].status); 84 return urb->iso_frame_desc[i].status; 85 } 86 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride; 87 if (! len) { 88 snd_printd("0 == len ERROR!\n"); 89 continue; 90 } 91 92 /* copy a data chunk */ 93 if ((hwptr_done + len) > runtime->buffer_size) { 94 int cnt = runtime->buffer_size - hwptr_done; 95 int blen = cnt * usX2Y->stride; 96 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen); 97 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen); 98 } else { 99 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, 100 len * usX2Y->stride); 101 } 102 lens += len; 103 if ((hwptr_done += len) >= runtime->buffer_size) 104 hwptr_done -= runtime->buffer_size; 105 } 106 107 subs->hwptr_done = hwptr_done; 108 subs->transfer_done += lens; 109 /* update the pointer, call callback if necessary */ 110 if (subs->transfer_done >= runtime->period_size) { 111 subs->transfer_done -= runtime->period_size; 112 snd_pcm_period_elapsed(subs->pcm_substream); 113 } 114 return 0; 115 } 116 /* 117 * prepare urb for playback data pipe 118 * 119 * we copy the data directly from the pcm buffer. 120 * the current position to be copied is held in hwptr field. 121 * since a urb can handle only a single linear buffer, if the total 122 * transferred area overflows the buffer boundary, we cannot send 123 * it directly from the buffer. thus the data is once copied to 124 * a temporary buffer and urb points to that. 125 */ 126 static int usX2Y_urb_play_prepare(struct snd_usX2Y_substream *subs, 127 struct urb *cap_urb, 128 struct urb *urb) 129 { 130 int count, counts, pack; 131 struct usX2Ydev *usX2Y = subs->usX2Y; 132 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; 133 134 count = 0; 135 for (pack = 0; pack < nr_of_packs(); pack++) { 136 /* calculate the size of a packet */ 137 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride; 138 count += counts; 139 if (counts < 43 || counts > 50) { 140 snd_printk(KERN_ERR "should not be here with counts=%i\n", counts); 141 return -EPIPE; 142 } 143 /* set up descriptor */ 144 urb->iso_frame_desc[pack].offset = pack ? 145 urb->iso_frame_desc[pack - 1].offset + 146 urb->iso_frame_desc[pack - 1].length : 147 0; 148 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length; 149 } 150 if (atomic_read(&subs->state) >= state_PRERUNNING) 151 if (subs->hwptr + count > runtime->buffer_size) { 152 /* err, the transferred area goes over buffer boundary. 153 * copy the data to the temp buffer. 154 */ 155 int len; 156 len = runtime->buffer_size - subs->hwptr; 157 urb->transfer_buffer = subs->tmpbuf; 158 memcpy(subs->tmpbuf, runtime->dma_area + 159 subs->hwptr * usX2Y->stride, len * usX2Y->stride); 160 memcpy(subs->tmpbuf + len * usX2Y->stride, 161 runtime->dma_area, (count - len) * usX2Y->stride); 162 subs->hwptr += count; 163 subs->hwptr -= runtime->buffer_size; 164 } else { 165 /* set the buffer pointer */ 166 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride; 167 if ((subs->hwptr += count) >= runtime->buffer_size) 168 subs->hwptr -= runtime->buffer_size; 169 } 170 else 171 urb->transfer_buffer = subs->tmpbuf; 172 urb->transfer_buffer_length = count * usX2Y->stride; 173 return 0; 174 } 175 176 /* 177 * process after playback data complete 178 * 179 * update the current position and call callback if a period is processed. 180 */ 181 static void usX2Y_urb_play_retire(struct snd_usX2Y_substream *subs, struct urb *urb) 182 { 183 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; 184 int len = urb->actual_length / subs->usX2Y->stride; 185 186 subs->transfer_done += len; 187 subs->hwptr_done += len; 188 if (subs->hwptr_done >= runtime->buffer_size) 189 subs->hwptr_done -= runtime->buffer_size; 190 if (subs->transfer_done >= runtime->period_size) { 191 subs->transfer_done -= runtime->period_size; 192 snd_pcm_period_elapsed(subs->pcm_substream); 193 } 194 } 195 196 static int usX2Y_urb_submit(struct snd_usX2Y_substream *subs, struct urb *urb, int frame) 197 { 198 int err; 199 if (!urb) 200 return -ENODEV; 201 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks 202 urb->hcpriv = NULL; 203 urb->dev = subs->usX2Y->chip.dev; /* we need to set this at each time */ 204 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 205 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err); 206 return err; 207 } 208 return 0; 209 } 210 211 static inline int usX2Y_usbframe_complete(struct snd_usX2Y_substream *capsubs, 212 struct snd_usX2Y_substream *playbacksubs, 213 int frame) 214 { 215 int err, state; 216 struct urb *urb = playbacksubs->completed_urb; 217 218 state = atomic_read(&playbacksubs->state); 219 if (NULL != urb) { 220 if (state == state_RUNNING) 221 usX2Y_urb_play_retire(playbacksubs, urb); 222 else if (state >= state_PRERUNNING) 223 atomic_inc(&playbacksubs->state); 224 } else { 225 switch (state) { 226 case state_STARTING1: 227 urb = playbacksubs->urb[0]; 228 atomic_inc(&playbacksubs->state); 229 break; 230 case state_STARTING2: 231 urb = playbacksubs->urb[1]; 232 atomic_inc(&playbacksubs->state); 233 break; 234 } 235 } 236 if (urb) { 237 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) || 238 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) { 239 return err; 240 } 241 } 242 243 playbacksubs->completed_urb = NULL; 244 245 state = atomic_read(&capsubs->state); 246 if (state >= state_PREPARED) { 247 if (state == state_RUNNING) { 248 if ((err = usX2Y_urb_capt_retire(capsubs))) 249 return err; 250 } else if (state >= state_PRERUNNING) 251 atomic_inc(&capsubs->state); 252 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame))) 253 return err; 254 } 255 capsubs->completed_urb = NULL; 256 return 0; 257 } 258 259 260 static void usX2Y_clients_stop(struct usX2Ydev *usX2Y) 261 { 262 int s, u; 263 264 for (s = 0; s < 4; s++) { 265 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 266 if (subs) { 267 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state)); 268 atomic_set(&subs->state, state_STOPPED); 269 } 270 } 271 for (s = 0; s < 4; s++) { 272 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 273 if (subs) { 274 if (atomic_read(&subs->state) >= state_PRERUNNING) { 275 snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); 276 } 277 for (u = 0; u < NRURBS; u++) { 278 struct urb *urb = subs->urb[u]; 279 if (NULL != urb) 280 snd_printdd("%i status=%i start_frame=%i\n", 281 u, urb->status, urb->start_frame); 282 } 283 } 284 } 285 usX2Y->prepare_subs = NULL; 286 wake_up(&usX2Y->prepare_wait_queue); 287 } 288 289 static void usX2Y_error_urb_status(struct usX2Ydev *usX2Y, 290 struct snd_usX2Y_substream *subs, struct urb *urb) 291 { 292 snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status); 293 urb->status = 0; 294 usX2Y_clients_stop(usX2Y); 295 } 296 297 static void usX2Y_error_sequence(struct usX2Ydev *usX2Y, 298 struct snd_usX2Y_substream *subs, struct urb *urb) 299 { 300 snd_printk(KERN_ERR "Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n" 301 KERN_ERR "Most propably some urb of usb-frame %i is still missing.\n" 302 KERN_ERR "Cause could be too long delays in usb-hcd interrupt handling.\n", 303 usb_get_current_frame_number(usX2Y->chip.dev), 304 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 305 usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame); 306 usX2Y_clients_stop(usX2Y); 307 } 308 309 static void i_usX2Y_urb_complete(struct urb *urb, struct pt_regs *regs) 310 { 311 struct snd_usX2Y_substream *subs = urb->context; 312 struct usX2Ydev *usX2Y = subs->usX2Y; 313 314 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) { 315 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", 316 usb_get_current_frame_number(usX2Y->chip.dev), 317 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 318 urb->status, urb->start_frame); 319 return; 320 } 321 if (unlikely(urb->status)) { 322 usX2Y_error_urb_status(usX2Y, subs, urb); 323 return; 324 } 325 if (likely((0xFFFF & urb->start_frame) == usX2Y->wait_iso_frame)) 326 subs->completed_urb = urb; 327 else { 328 usX2Y_error_sequence(usX2Y, subs, urb); 329 return; 330 } 331 { 332 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE], 333 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 334 if (capsubs->completed_urb && 335 atomic_read(&capsubs->state) >= state_PREPARED && 336 (playbacksubs->completed_urb || 337 atomic_read(&playbacksubs->state) < state_PREPARED)) { 338 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) { 339 if (nr_of_packs() <= urb->start_frame && 340 urb->start_frame <= (2 * nr_of_packs() - 1)) // uhci and ohci 341 usX2Y->wait_iso_frame = urb->start_frame - nr_of_packs(); 342 else 343 usX2Y->wait_iso_frame += nr_of_packs(); 344 } else { 345 snd_printdd("\n"); 346 usX2Y_clients_stop(usX2Y); 347 } 348 } 349 } 350 } 351 352 static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y, 353 void (*complete)(struct urb *, struct pt_regs *)) 354 { 355 int s, u; 356 for (s = 0; s < 4; s++) { 357 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 358 if (NULL != subs) 359 for (u = 0; u < NRURBS; u++) { 360 struct urb * urb = subs->urb[u]; 361 if (NULL != urb) 362 urb->complete = complete; 363 } 364 } 365 } 366 367 static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y) 368 { 369 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete); 370 usX2Y->prepare_subs = NULL; 371 } 372 373 static void i_usX2Y_subs_startup(struct urb *urb, struct pt_regs *regs) 374 { 375 struct snd_usX2Y_substream *subs = urb->context; 376 struct usX2Ydev *usX2Y = subs->usX2Y; 377 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs; 378 if (NULL != prepare_subs) 379 if (urb->start_frame == prepare_subs->urb[0]->start_frame) { 380 usX2Y_subs_startup_finish(usX2Y); 381 atomic_inc(&prepare_subs->state); 382 wake_up(&usX2Y->prepare_wait_queue); 383 } 384 385 i_usX2Y_urb_complete(urb, regs); 386 } 387 388 static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs) 389 { 390 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", 391 subs, subs->endpoint, subs->urb[0], subs->urb[1]); 392 /* reset the pointer */ 393 subs->hwptr = 0; 394 subs->hwptr_done = 0; 395 subs->transfer_done = 0; 396 } 397 398 399 static void usX2Y_urb_release(struct urb **urb, int free_tb) 400 { 401 if (*urb) { 402 usb_kill_urb(*urb); 403 if (free_tb) 404 kfree((*urb)->transfer_buffer); 405 usb_free_urb(*urb); 406 *urb = NULL; 407 } 408 } 409 /* 410 * release a substreams urbs 411 */ 412 static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs) 413 { 414 int i; 415 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint); 416 for (i = 0; i < NRURBS; i++) 417 usX2Y_urb_release(subs->urb + i, 418 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]); 419 420 kfree(subs->tmpbuf); 421 subs->tmpbuf = NULL; 422 } 423 /* 424 * initialize a substream's urbs 425 */ 426 static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs) 427 { 428 int i; 429 unsigned int pipe; 430 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 431 struct usb_device *dev = subs->usX2Y->chip.dev; 432 433 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) : 434 usb_rcvisocpipe(dev, subs->endpoint); 435 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback); 436 if (!subs->maxpacksize) 437 return -EINVAL; 438 439 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */ 440 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL); 441 if (NULL == subs->tmpbuf) { 442 snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); 443 return -ENOMEM; 444 } 445 } 446 /* allocate and initialize data urbs */ 447 for (i = 0; i < NRURBS; i++) { 448 struct urb **purb = subs->urb + i; 449 if (*purb) { 450 usb_kill_urb(*purb); 451 continue; 452 } 453 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL); 454 if (NULL == *purb) { 455 usX2Y_urbs_release(subs); 456 return -ENOMEM; 457 } 458 if (!is_playback && !(*purb)->transfer_buffer) { 459 /* allocate a capture buffer per urb */ 460 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); 461 if (NULL == (*purb)->transfer_buffer) { 462 usX2Y_urbs_release(subs); 463 return -ENOMEM; 464 } 465 } 466 (*purb)->dev = dev; 467 (*purb)->pipe = pipe; 468 (*purb)->number_of_packets = nr_of_packs(); 469 (*purb)->context = subs; 470 (*purb)->interval = 1; 471 (*purb)->complete = i_usX2Y_subs_startup; 472 } 473 return 0; 474 } 475 476 static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs) 477 { 478 struct usX2Ydev *usX2Y = subs->usX2Y; 479 usX2Y->prepare_subs = subs; 480 subs->urb[0]->start_frame = -1; 481 wmb(); 482 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup); 483 } 484 485 static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs) 486 { 487 int i, err; 488 struct usX2Ydev *usX2Y = subs->usX2Y; 489 490 if ((err = usX2Y_urbs_allocate(subs)) < 0) 491 return err; 492 subs->completed_urb = NULL; 493 for (i = 0; i < 4; i++) { 494 struct snd_usX2Y_substream *subs = usX2Y->subs[i]; 495 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED) 496 goto start; 497 } 498 usX2Y->wait_iso_frame = -1; 499 500 start: 501 usX2Y_subs_startup(subs); 502 for (i = 0; i < NRURBS; i++) { 503 struct urb *urb = subs->urb[i]; 504 if (usb_pipein(urb->pipe)) { 505 unsigned long pack; 506 if (0 == i) 507 atomic_set(&subs->state, state_STARTING3); 508 urb->dev = usX2Y->chip.dev; 509 urb->transfer_flags = URB_ISO_ASAP; 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 (0 > usX2Y->wait_iso_frame) 521 usX2Y->wait_iso_frame = urb->start_frame; 522 } 523 urb->transfer_flags = 0; 524 } else { 525 atomic_set(&subs->state, state_STARTING1); 526 break; 527 } 528 } 529 err = 0; 530 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs); 531 if (atomic_read(&subs->state) != state_PREPARED) 532 err = -EPIPE; 533 534 cleanup: 535 if (err) { 536 usX2Y_subs_startup_finish(usX2Y); 537 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything 538 } 539 return err; 540 } 541 542 /* 543 * return the current pcm pointer. just return the hwptr_done value. 544 */ 545 static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream) 546 { 547 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 548 return subs->hwptr_done; 549 } 550 /* 551 * start/stop substream 552 */ 553 static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 554 { 555 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 556 557 switch (cmd) { 558 case SNDRV_PCM_TRIGGER_START: 559 snd_printdd("snd_usX2Y_pcm_trigger(START)\n"); 560 if (atomic_read(&subs->state) == state_PREPARED && 561 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) { 562 atomic_set(&subs->state, state_PRERUNNING); 563 } else { 564 snd_printdd("\n"); 565 return -EPIPE; 566 } 567 break; 568 case SNDRV_PCM_TRIGGER_STOP: 569 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n"); 570 if (atomic_read(&subs->state) >= state_PRERUNNING) 571 atomic_set(&subs->state, state_PREPARED); 572 break; 573 default: 574 return -EINVAL; 575 } 576 return 0; 577 } 578 579 580 /* 581 * allocate a buffer, setup samplerate 582 * 583 * so far we use a physically linear buffer although packetize transfer 584 * doesn't need a continuous area. 585 * if sg buffer is supported on the later version of alsa, we'll follow 586 * that. 587 */ 588 static struct s_c2 589 { 590 char c1, c2; 591 } 592 SetRate44100[] = 593 { 594 { 0x14, 0x08}, // this line sets 44100, well actually a little less 595 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 596 { 0x18, 0x42}, 597 { 0x18, 0x45}, 598 { 0x18, 0x46}, 599 { 0x18, 0x48}, 600 { 0x18, 0x4A}, 601 { 0x18, 0x4C}, 602 { 0x18, 0x4E}, 603 { 0x18, 0x50}, 604 { 0x18, 0x52}, 605 { 0x18, 0x54}, 606 { 0x18, 0x56}, 607 { 0x18, 0x58}, 608 { 0x18, 0x5A}, 609 { 0x18, 0x5C}, 610 { 0x18, 0x5E}, 611 { 0x18, 0x60}, 612 { 0x18, 0x62}, 613 { 0x18, 0x64}, 614 { 0x18, 0x66}, 615 { 0x18, 0x68}, 616 { 0x18, 0x6A}, 617 { 0x18, 0x6C}, 618 { 0x18, 0x6E}, 619 { 0x18, 0x70}, 620 { 0x18, 0x72}, 621 { 0x18, 0x74}, 622 { 0x18, 0x76}, 623 { 0x18, 0x78}, 624 { 0x18, 0x7A}, 625 { 0x18, 0x7C}, 626 { 0x18, 0x7E} 627 }; 628 static struct s_c2 SetRate48000[] = 629 { 630 { 0x14, 0x09}, // this line sets 48000, well actually a little less 631 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 632 { 0x18, 0x42}, 633 { 0x18, 0x45}, 634 { 0x18, 0x46}, 635 { 0x18, 0x48}, 636 { 0x18, 0x4A}, 637 { 0x18, 0x4C}, 638 { 0x18, 0x4E}, 639 { 0x18, 0x50}, 640 { 0x18, 0x52}, 641 { 0x18, 0x54}, 642 { 0x18, 0x56}, 643 { 0x18, 0x58}, 644 { 0x18, 0x5A}, 645 { 0x18, 0x5C}, 646 { 0x18, 0x5E}, 647 { 0x18, 0x60}, 648 { 0x18, 0x62}, 649 { 0x18, 0x64}, 650 { 0x18, 0x66}, 651 { 0x18, 0x68}, 652 { 0x18, 0x6A}, 653 { 0x18, 0x6C}, 654 { 0x18, 0x6E}, 655 { 0x18, 0x70}, 656 { 0x18, 0x73}, 657 { 0x18, 0x74}, 658 { 0x18, 0x76}, 659 { 0x18, 0x78}, 660 { 0x18, 0x7A}, 661 { 0x18, 0x7C}, 662 { 0x18, 0x7E} 663 }; 664 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) 665 666 static void i_usX2Y_04Int(struct urb *urb, struct pt_regs *regs) 667 { 668 struct usX2Ydev *usX2Y = urb->context; 669 670 if (urb->status) 671 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status); 672 if (0 == --usX2Y->US04->len) 673 wake_up(&usX2Y->In04WaitQueue); 674 } 675 676 static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate) 677 { 678 int err = 0, i; 679 struct snd_usX2Y_urbSeq *us = NULL; 680 int *usbdata = NULL; 681 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; 682 683 if (usX2Y->rate != rate) { 684 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); 685 if (NULL == us) { 686 err = -ENOMEM; 687 goto cleanup; 688 } 689 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL); 690 if (NULL == usbdata) { 691 err = -ENOMEM; 692 goto cleanup; 693 } 694 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 695 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { 696 err = -ENOMEM; 697 goto cleanup; 698 } 699 ((char*)(usbdata + i))[0] = ra[i].c1; 700 ((char*)(usbdata + i))[1] = ra[i].c2; 701 usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4), 702 usbdata + i, 2, i_usX2Y_04Int, usX2Y); 703 #ifdef OLD_USB 704 us->urb[i]->transfer_flags = USB_QUEUE_BULK; 705 #endif 706 } 707 us->submitted = 0; 708 us->len = NOOF_SETRATE_URBS; 709 usX2Y->US04 = us; 710 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); 711 usX2Y->US04 = NULL; 712 if (us->len) 713 err = -ENODEV; 714 cleanup: 715 if (us) { 716 us->submitted = 2*NOOF_SETRATE_URBS; 717 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 718 struct urb *urb = us->urb[i]; 719 if (urb->status) { 720 if (!err) 721 err = -ENODEV; 722 usb_kill_urb(urb); 723 } 724 usb_free_urb(urb); 725 } 726 usX2Y->US04 = NULL; 727 kfree(usbdata); 728 kfree(us); 729 if (!err) 730 usX2Y->rate = rate; 731 } 732 } 733 734 return err; 735 } 736 737 738 static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format) 739 { 740 int alternate, err; 741 struct list_head* p; 742 if (format == SNDRV_PCM_FORMAT_S24_3LE) { 743 alternate = 2; 744 usX2Y->stride = 6; 745 } else { 746 alternate = 1; 747 usX2Y->stride = 4; 748 } 749 list_for_each(p, &usX2Y->chip.midi_list) { 750 snd_usbmidi_input_stop(p); 751 } 752 usb_kill_urb(usX2Y->In04urb); 753 if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) { 754 snd_printk(KERN_ERR "usb_set_interface error \n"); 755 return err; 756 } 757 usX2Y->In04urb->dev = usX2Y->chip.dev; 758 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); 759 list_for_each(p, &usX2Y->chip.midi_list) { 760 snd_usbmidi_input_start(p); 761 } 762 usX2Y->format = format; 763 usX2Y->rate = 0; 764 return err; 765 } 766 767 768 static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream, 769 struct snd_pcm_hw_params *hw_params) 770 { 771 int err = 0; 772 unsigned int rate = params_rate(hw_params); 773 snd_pcm_format_t format = params_format(hw_params); 774 struct snd_card *card = substream->pstr->pcm->card; 775 struct list_head *list; 776 777 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); 778 // all pcm substreams off one usX2Y have to operate at the same rate & format 779 list_for_each(list, &card->devices) { 780 struct snd_device *dev; 781 struct snd_pcm *pcm; 782 int s; 783 dev = snd_device(list); 784 if (dev->type != SNDRV_DEV_PCM) 785 continue; 786 pcm = dev->device_data; 787 for (s = 0; s < 2; ++s) { 788 struct snd_pcm_substream *test_substream; 789 test_substream = pcm->streams[s].substream; 790 if (test_substream && test_substream != substream && 791 test_substream->runtime && 792 ((test_substream->runtime->format && 793 test_substream->runtime->format != format) || 794 (test_substream->runtime->rate && 795 test_substream->runtime->rate != rate))) 796 return -EINVAL; 797 } 798 } 799 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { 800 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", 801 substream, params_buffer_bytes(hw_params), err); 802 return err; 803 } 804 return 0; 805 } 806 807 /* 808 * free the buffer 809 */ 810 static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream) 811 { 812 struct snd_pcm_runtime *runtime = substream->runtime; 813 struct snd_usX2Y_substream *subs = runtime->private_data; 814 down(&subs->usX2Y->prepare_mutex); 815 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); 816 817 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { 818 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 819 atomic_set(&subs->state, state_STOPPED); 820 usX2Y_urbs_release(subs); 821 if (!cap_subs->pcm_substream || 822 !cap_subs->pcm_substream->runtime || 823 !cap_subs->pcm_substream->runtime->status || 824 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { 825 atomic_set(&cap_subs->state, state_STOPPED); 826 usX2Y_urbs_release(cap_subs); 827 } 828 } else { 829 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 830 if (atomic_read(&playback_subs->state) < state_PREPARED) { 831 atomic_set(&subs->state, state_STOPPED); 832 usX2Y_urbs_release(subs); 833 } 834 } 835 up(&subs->usX2Y->prepare_mutex); 836 return snd_pcm_lib_free_pages(substream); 837 } 838 /* 839 * prepare callback 840 * 841 * set format and initialize urbs 842 */ 843 static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream) 844 { 845 struct snd_pcm_runtime *runtime = substream->runtime; 846 struct snd_usX2Y_substream *subs = runtime->private_data; 847 struct usX2Ydev *usX2Y = subs->usX2Y; 848 struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 849 int err = 0; 850 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); 851 852 down(&usX2Y->prepare_mutex); 853 usX2Y_subs_prepare(subs); 854 // Start hardware streams 855 // SyncStream first.... 856 if (atomic_read(&capsubs->state) < state_PREPARED) { 857 if (usX2Y->format != runtime->format) 858 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) 859 goto up_prepare_mutex; 860 if (usX2Y->rate != runtime->rate) 861 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) 862 goto up_prepare_mutex; 863 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); 864 if (0 > (err = usX2Y_urbs_start(capsubs))) 865 goto up_prepare_mutex; 866 } 867 868 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) 869 err = usX2Y_urbs_start(subs); 870 871 up_prepare_mutex: 872 up(&usX2Y->prepare_mutex); 873 return err; 874 } 875 876 static struct snd_pcm_hardware snd_usX2Y_2c = 877 { 878 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 879 SNDRV_PCM_INFO_BLOCK_TRANSFER | 880 SNDRV_PCM_INFO_MMAP_VALID), 881 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, 882 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 883 .rate_min = 44100, 884 .rate_max = 48000, 885 .channels_min = 2, 886 .channels_max = 2, 887 .buffer_bytes_max = (2*128*1024), 888 .period_bytes_min = 64, 889 .period_bytes_max = (128*1024), 890 .periods_min = 2, 891 .periods_max = 1024, 892 .fifo_size = 0 893 }; 894 895 896 897 static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream) 898 { 899 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **) 900 snd_pcm_substream_chip(substream))[substream->stream]; 901 struct snd_pcm_runtime *runtime = substream->runtime; 902 903 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) 904 return -EBUSY; 905 906 runtime->hw = snd_usX2Y_2c; 907 runtime->private_data = subs; 908 subs->pcm_substream = substream; 909 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); 910 return 0; 911 } 912 913 914 915 static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream) 916 { 917 struct snd_pcm_runtime *runtime = substream->runtime; 918 struct snd_usX2Y_substream *subs = runtime->private_data; 919 920 subs->pcm_substream = NULL; 921 922 return 0; 923 } 924 925 926 static struct snd_pcm_ops snd_usX2Y_pcm_ops = 927 { 928 .open = snd_usX2Y_pcm_open, 929 .close = snd_usX2Y_pcm_close, 930 .ioctl = snd_pcm_lib_ioctl, 931 .hw_params = snd_usX2Y_pcm_hw_params, 932 .hw_free = snd_usX2Y_pcm_hw_free, 933 .prepare = snd_usX2Y_pcm_prepare, 934 .trigger = snd_usX2Y_pcm_trigger, 935 .pointer = snd_usX2Y_pcm_pointer, 936 }; 937 938 939 /* 940 * free a usb stream instance 941 */ 942 static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream) 943 { 944 if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) { 945 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); 946 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; 947 } 948 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); 949 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; 950 } 951 952 static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm) 953 { 954 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data; 955 if (usX2Y_stream) 956 usX2Y_audio_stream_free(usX2Y_stream); 957 } 958 959 static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint) 960 { 961 struct snd_pcm *pcm; 962 int err, i; 963 struct snd_usX2Y_substream **usX2Y_substream = 964 usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs; 965 966 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; 967 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) { 968 usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL); 969 if (NULL == usX2Y_substream[i]) { 970 snd_printk(KERN_ERR "cannot malloc\n"); 971 return -ENOMEM; 972 } 973 usX2Y_substream[i]->usX2Y = usX2Y(card); 974 } 975 976 if (playback_endpoint) 977 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint; 978 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint; 979 980 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->chip.pcm_devs, 981 playback_endpoint ? 1 : 0, 1, 982 &pcm); 983 if (err < 0) { 984 usX2Y_audio_stream_free(usX2Y_substream); 985 return err; 986 } 987 988 if (playback_endpoint) 989 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops); 990 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops); 991 992 pcm->private_data = usX2Y_substream; 993 pcm->private_free = snd_usX2Y_pcm_private_free; 994 pcm->info_flags = 0; 995 996 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->chip.pcm_devs); 997 998 if ((playback_endpoint && 999 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream, 1000 SNDRV_DMA_TYPE_CONTINUOUS, 1001 snd_dma_continuous_data(GFP_KERNEL), 1002 64*1024, 128*1024))) || 1003 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 1004 SNDRV_DMA_TYPE_CONTINUOUS, 1005 snd_dma_continuous_data(GFP_KERNEL), 1006 64*1024, 128*1024))) { 1007 snd_usX2Y_pcm_private_free(pcm); 1008 return err; 1009 } 1010 usX2Y(card)->chip.pcm_devs++; 1011 1012 return 0; 1013 } 1014 1015 /* 1016 * create a chip instance and set its names. 1017 */ 1018 int usX2Y_audio_create(struct snd_card *card) 1019 { 1020 int err = 0; 1021 1022 INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list); 1023 1024 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8))) 1025 return err; 1026 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) == USB_ID_US428) 1027 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA))) 1028 return err; 1029 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) != USB_ID_US122) 1030 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122. 1031 return err; 1032 } 1033