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(snd_usX2Y_substream_t *subs) 71 { 72 struct urb *urb = subs->completed_urb; 73 snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime; 74 unsigned char *cp; 75 int i, len, lens = 0, hwptr_done = subs->hwptr_done; 76 usX2Ydev_t *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("activ frame status %i. Most propably some hardware problem.\n", urb->iso_frame_desc[i].status); 82 return urb->iso_frame_desc[i].status; 83 } 84 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride; 85 if (! len) { 86 snd_printd("0 == len ERROR!\n"); 87 continue; 88 } 89 90 /* copy a data chunk */ 91 if ((hwptr_done + len) > runtime->buffer_size) { 92 int cnt = runtime->buffer_size - hwptr_done; 93 int blen = cnt * usX2Y->stride; 94 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen); 95 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen); 96 } else { 97 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, len * usX2Y->stride); 98 } 99 lens += len; 100 if ((hwptr_done += len) >= runtime->buffer_size) 101 hwptr_done -= runtime->buffer_size; 102 } 103 104 subs->hwptr_done = hwptr_done; 105 subs->transfer_done += lens; 106 /* update the pointer, call callback if necessary */ 107 if (subs->transfer_done >= runtime->period_size) { 108 subs->transfer_done -= runtime->period_size; 109 snd_pcm_period_elapsed(subs->pcm_substream); 110 } 111 return 0; 112 } 113 /* 114 * prepare urb for playback data pipe 115 * 116 * we copy the data directly from the pcm buffer. 117 * the current position to be copied is held in hwptr field. 118 * since a urb can handle only a single linear buffer, if the total 119 * transferred area overflows the buffer boundary, we cannot send 120 * it directly from the buffer. thus the data is once copied to 121 * a temporary buffer and urb points to that. 122 */ 123 static int usX2Y_urb_play_prepare(snd_usX2Y_substream_t *subs, 124 struct urb *cap_urb, 125 struct urb *urb) 126 { 127 int count, counts, pack; 128 usX2Ydev_t* usX2Y = subs->usX2Y; 129 snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime; 130 131 count = 0; 132 for (pack = 0; pack < nr_of_packs(); pack++) { 133 /* calculate the size of a packet */ 134 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride; 135 count += counts; 136 if (counts < 43 || counts > 50) { 137 snd_printk("should not be here with counts=%i\n", counts); 138 return -EPIPE; 139 } 140 /* set up descriptor */ 141 urb->iso_frame_desc[pack].offset = pack ? 142 urb->iso_frame_desc[pack - 1].offset + urb->iso_frame_desc[pack - 1].length : 143 0; 144 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length; 145 } 146 if (atomic_read(&subs->state) >= state_PRERUNNING) 147 if (subs->hwptr + count > runtime->buffer_size) { 148 /* err, the transferred area goes over buffer boundary. 149 * copy the data to the temp buffer. 150 */ 151 int len; 152 len = runtime->buffer_size - subs->hwptr; 153 urb->transfer_buffer = subs->tmpbuf; 154 memcpy(subs->tmpbuf, runtime->dma_area + subs->hwptr * usX2Y->stride, len * usX2Y->stride); 155 memcpy(subs->tmpbuf + len * usX2Y->stride, runtime->dma_area, (count - len) * usX2Y->stride); 156 subs->hwptr += count; 157 subs->hwptr -= runtime->buffer_size; 158 } else { 159 /* set the buffer pointer */ 160 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride; 161 if ((subs->hwptr += count) >= runtime->buffer_size) 162 subs->hwptr -= runtime->buffer_size; 163 } 164 else 165 urb->transfer_buffer = subs->tmpbuf; 166 urb->transfer_buffer_length = count * usX2Y->stride; 167 return 0; 168 } 169 170 /* 171 * process after playback data complete 172 * 173 * update the current position and call callback if a period is processed. 174 */ 175 static void usX2Y_urb_play_retire(snd_usX2Y_substream_t *subs, struct urb *urb) 176 { 177 snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime; 178 int len = urb->actual_length / subs->usX2Y->stride; 179 180 subs->transfer_done += len; 181 subs->hwptr_done += len; 182 if (subs->hwptr_done >= runtime->buffer_size) 183 subs->hwptr_done -= runtime->buffer_size; 184 if (subs->transfer_done >= runtime->period_size) { 185 subs->transfer_done -= runtime->period_size; 186 snd_pcm_period_elapsed(subs->pcm_substream); 187 } 188 } 189 190 static int usX2Y_urb_submit(snd_usX2Y_substream_t *subs, struct urb *urb, int frame) 191 { 192 int err; 193 if (!urb) 194 return -ENODEV; 195 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks 196 urb->hcpriv = NULL; 197 urb->dev = subs->usX2Y->chip.dev; /* we need to set this at each time */ 198 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 199 snd_printk("usb_submit_urb() returned %i\n", err); 200 return err; 201 } 202 return 0; 203 } 204 205 static inline int usX2Y_usbframe_complete(snd_usX2Y_substream_t *capsubs, snd_usX2Y_substream_t *playbacksubs, int frame) 206 { 207 int err, state; 208 { 209 struct urb *urb = playbacksubs->completed_urb; 210 211 state = atomic_read(&playbacksubs->state); 212 if (NULL != urb) { 213 if (state == state_RUNNING) 214 usX2Y_urb_play_retire(playbacksubs, urb); 215 else 216 if (state >= state_PRERUNNING) { 217 atomic_inc(&playbacksubs->state); 218 } 219 } else { 220 switch (state) { 221 case state_STARTING1: 222 urb = playbacksubs->urb[0]; 223 atomic_inc(&playbacksubs->state); 224 break; 225 case state_STARTING2: 226 urb = playbacksubs->urb[1]; 227 atomic_inc(&playbacksubs->state); 228 break; 229 } 230 } 231 if (urb) { 232 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) || 233 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) { 234 return err; 235 } 236 } 237 238 playbacksubs->completed_urb = NULL; 239 } 240 state = atomic_read(&capsubs->state); 241 if (state >= state_PREPARED) { 242 if (state == state_RUNNING) { 243 if ((err = usX2Y_urb_capt_retire(capsubs))) 244 return err; 245 } else 246 if (state >= state_PRERUNNING) { 247 atomic_inc(&capsubs->state); 248 } 249 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame))) 250 return err; 251 } 252 capsubs->completed_urb = NULL; 253 return 0; 254 } 255 256 257 static void usX2Y_clients_stop(usX2Ydev_t *usX2Y) 258 { 259 int s, u; 260 for (s = 0; s < 4; s++) { 261 snd_usX2Y_substream_t *subs = usX2Y->subs[s]; 262 if (subs) { 263 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state)); 264 atomic_set(&subs->state, state_STOPPED); 265 } 266 } 267 for (s = 0; s < 4; s++) { 268 snd_usX2Y_substream_t *subs = usX2Y->subs[s]; 269 if (subs) { 270 if (atomic_read(&subs->state) >= state_PRERUNNING) { 271 snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); 272 } 273 for (u = 0; u < NRURBS; u++) { 274 struct urb *urb = subs->urb[u]; 275 if (NULL != urb) 276 snd_printdd("%i status=%i start_frame=%i\n", u, urb->status, urb->start_frame); 277 } 278 } 279 } 280 usX2Y->prepare_subs = NULL; 281 wake_up(&usX2Y->prepare_wait_queue); 282 } 283 284 static void usX2Y_error_urb_status(usX2Ydev_t *usX2Y, snd_usX2Y_substream_t *subs, struct urb *urb) 285 { 286 snd_printk("ep=%i stalled with status=%i\n", subs->endpoint, urb->status); 287 urb->status = 0; 288 usX2Y_clients_stop(usX2Y); 289 } 290 291 static void usX2Y_error_sequence(usX2Ydev_t *usX2Y, snd_usX2Y_substream_t *subs, struct urb *urb) 292 { 293 snd_printk("Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n" 294 "Most propably some urb of usb-frame %i is still missing.\n" 295 "Cause could be too long delays in usb-hcd interrupt handling.\n", 296 usb_get_current_frame_number(usX2Y->chip.dev), 297 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame); 298 usX2Y_clients_stop(usX2Y); 299 } 300 301 static void i_usX2Y_urb_complete(struct urb *urb, struct pt_regs *regs) 302 { 303 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context; 304 usX2Ydev_t *usX2Y = subs->usX2Y; 305 306 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) { 307 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", usb_get_current_frame_number(usX2Y->chip.dev), subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", urb->status, urb->start_frame); 308 return; 309 } 310 if (unlikely(urb->status)) { 311 usX2Y_error_urb_status(usX2Y, subs, urb); 312 return; 313 } 314 if (likely((0xFFFF & urb->start_frame) == usX2Y->wait_iso_frame)) 315 subs->completed_urb = urb; 316 else { 317 usX2Y_error_sequence(usX2Y, subs, urb); 318 return; 319 } 320 { 321 snd_usX2Y_substream_t *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE], 322 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 323 if (capsubs->completed_urb && atomic_read(&capsubs->state) >= state_PREPARED && 324 (playbacksubs->completed_urb || atomic_read(&playbacksubs->state) < state_PREPARED)) { 325 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) { 326 if (nr_of_packs() <= urb->start_frame && 327 urb->start_frame <= (2 * nr_of_packs() - 1)) // uhci and ohci 328 usX2Y->wait_iso_frame = urb->start_frame - nr_of_packs(); 329 else 330 usX2Y->wait_iso_frame += nr_of_packs(); 331 } else { 332 snd_printdd("\n"); 333 usX2Y_clients_stop(usX2Y); 334 } 335 } 336 } 337 } 338 339 static void usX2Y_urbs_set_complete(usX2Ydev_t * usX2Y, void (*complete)(struct urb *, struct pt_regs *)) 340 { 341 int s, u; 342 for (s = 0; s < 4; s++) { 343 snd_usX2Y_substream_t *subs = usX2Y->subs[s]; 344 if (NULL != subs) 345 for (u = 0; u < NRURBS; u++) { 346 struct urb * urb = subs->urb[u]; 347 if (NULL != urb) 348 urb->complete = complete; 349 } 350 } 351 } 352 353 static void usX2Y_subs_startup_finish(usX2Ydev_t * usX2Y) 354 { 355 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete); 356 usX2Y->prepare_subs = NULL; 357 } 358 359 static void i_usX2Y_subs_startup(struct urb *urb, struct pt_regs *regs) 360 { 361 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context; 362 usX2Ydev_t *usX2Y = subs->usX2Y; 363 snd_usX2Y_substream_t *prepare_subs = usX2Y->prepare_subs; 364 if (NULL != prepare_subs) 365 if (urb->start_frame == prepare_subs->urb[0]->start_frame) { 366 usX2Y_subs_startup_finish(usX2Y); 367 atomic_inc(&prepare_subs->state); 368 wake_up(&usX2Y->prepare_wait_queue); 369 } 370 371 i_usX2Y_urb_complete(urb, regs); 372 } 373 374 static void usX2Y_subs_prepare(snd_usX2Y_substream_t *subs) 375 { 376 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", subs, subs->endpoint, subs->urb[0], subs->urb[1]); 377 /* reset the pointer */ 378 subs->hwptr = 0; 379 subs->hwptr_done = 0; 380 subs->transfer_done = 0; 381 } 382 383 384 static void usX2Y_urb_release(struct urb** urb, int free_tb) 385 { 386 if (*urb) { 387 usb_kill_urb(*urb); 388 if (free_tb) 389 kfree((*urb)->transfer_buffer); 390 usb_free_urb(*urb); 391 *urb = NULL; 392 } 393 } 394 /* 395 * release a substreams urbs 396 */ 397 static void usX2Y_urbs_release(snd_usX2Y_substream_t *subs) 398 { 399 int i; 400 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint); 401 for (i = 0; i < NRURBS; i++) 402 usX2Y_urb_release(subs->urb + i, subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]); 403 404 if (subs->tmpbuf) { 405 kfree(subs->tmpbuf); 406 subs->tmpbuf = NULL; 407 } 408 } 409 /* 410 * initialize a substream's urbs 411 */ 412 static int usX2Y_urbs_allocate(snd_usX2Y_substream_t *subs) 413 { 414 int i; 415 unsigned int pipe; 416 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 417 struct usb_device *dev = subs->usX2Y->chip.dev; 418 419 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) : 420 usb_rcvisocpipe(dev, subs->endpoint); 421 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback); 422 if (!subs->maxpacksize) 423 return -EINVAL; 424 425 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */ 426 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL); 427 if (NULL == subs->tmpbuf) { 428 snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); 429 return -ENOMEM; 430 } 431 } 432 /* allocate and initialize data urbs */ 433 for (i = 0; i < NRURBS; i++) { 434 struct urb** purb = subs->urb + i; 435 if (*purb) { 436 usb_kill_urb(*purb); 437 continue; 438 } 439 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL); 440 if (NULL == *purb) { 441 usX2Y_urbs_release(subs); 442 return -ENOMEM; 443 } 444 if (!is_playback && !(*purb)->transfer_buffer) { 445 /* allocate a capture buffer per urb */ 446 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); 447 if (NULL == (*purb)->transfer_buffer) { 448 usX2Y_urbs_release(subs); 449 return -ENOMEM; 450 } 451 } 452 (*purb)->dev = dev; 453 (*purb)->pipe = pipe; 454 (*purb)->number_of_packets = nr_of_packs(); 455 (*purb)->context = subs; 456 (*purb)->interval = 1; 457 (*purb)->complete = i_usX2Y_subs_startup; 458 } 459 return 0; 460 } 461 462 static void usX2Y_subs_startup(snd_usX2Y_substream_t *subs) 463 { 464 usX2Ydev_t *usX2Y = subs->usX2Y; 465 usX2Y->prepare_subs = subs; 466 subs->urb[0]->start_frame = -1; 467 wmb(); 468 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup); 469 } 470 471 static int usX2Y_urbs_start(snd_usX2Y_substream_t *subs) 472 { 473 int i, err; 474 usX2Ydev_t *usX2Y = subs->usX2Y; 475 476 if ((err = usX2Y_urbs_allocate(subs)) < 0) 477 return err; 478 subs->completed_urb = NULL; 479 for (i = 0; i < 4; i++) { 480 snd_usX2Y_substream_t *subs = usX2Y->subs[i]; 481 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED) 482 goto start; 483 } 484 usX2Y->wait_iso_frame = -1; 485 start: 486 { 487 usX2Y_subs_startup(subs); 488 for (i = 0; i < NRURBS; i++) { 489 struct urb *urb = subs->urb[i]; 490 if (usb_pipein(urb->pipe)) { 491 unsigned long pack; 492 if (0 == i) 493 atomic_set(&subs->state, state_STARTING3); 494 urb->dev = usX2Y->chip.dev; 495 urb->transfer_flags = URB_ISO_ASAP; 496 for (pack = 0; pack < nr_of_packs(); pack++) { 497 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack; 498 urb->iso_frame_desc[pack].length = subs->maxpacksize; 499 } 500 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs(); 501 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 502 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err); 503 err = -EPIPE; 504 goto cleanup; 505 } else { 506 if (0 > usX2Y->wait_iso_frame) 507 usX2Y->wait_iso_frame = urb->start_frame; 508 } 509 urb->transfer_flags = 0; 510 } else { 511 atomic_set(&subs->state, state_STARTING1); 512 break; 513 } 514 } 515 err = 0; 516 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs); 517 if (atomic_read(&subs->state) != state_PREPARED) { 518 err = -EPIPE; 519 } 520 521 cleanup: 522 if (err) { 523 usX2Y_subs_startup_finish(usX2Y); 524 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything 525 } 526 } 527 return err; 528 } 529 530 /* 531 * return the current pcm pointer. just return the hwptr_done value. 532 */ 533 static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream) 534 { 535 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data; 536 return subs->hwptr_done; 537 } 538 /* 539 * start/stop substream 540 */ 541 static int snd_usX2Y_pcm_trigger(snd_pcm_substream_t *substream, int cmd) 542 { 543 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data; 544 545 switch (cmd) { 546 case SNDRV_PCM_TRIGGER_START: 547 snd_printdd("snd_usX2Y_pcm_trigger(START)\n"); 548 if (atomic_read(&subs->state) == state_PREPARED && 549 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) { 550 atomic_set(&subs->state, state_PRERUNNING); 551 } else { 552 snd_printdd("\n"); 553 return -EPIPE; 554 } 555 break; 556 case SNDRV_PCM_TRIGGER_STOP: 557 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n"); 558 if (atomic_read(&subs->state) >= state_PRERUNNING) 559 atomic_set(&subs->state, state_PREPARED); 560 break; 561 default: 562 return -EINVAL; 563 } 564 return 0; 565 } 566 567 568 /* 569 * allocate a buffer, setup samplerate 570 * 571 * so far we use a physically linear buffer although packetize transfer 572 * doesn't need a continuous area. 573 * if sg buffer is supported on the later version of alsa, we'll follow 574 * that. 575 */ 576 static struct s_c2 577 { 578 char c1, c2; 579 } 580 SetRate44100[] = 581 { 582 { 0x14, 0x08}, // this line sets 44100, well actually a little less 583 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 584 { 0x18, 0x42}, 585 { 0x18, 0x45}, 586 { 0x18, 0x46}, 587 { 0x18, 0x48}, 588 { 0x18, 0x4A}, 589 { 0x18, 0x4C}, 590 { 0x18, 0x4E}, 591 { 0x18, 0x50}, 592 { 0x18, 0x52}, 593 { 0x18, 0x54}, 594 { 0x18, 0x56}, 595 { 0x18, 0x58}, 596 { 0x18, 0x5A}, 597 { 0x18, 0x5C}, 598 { 0x18, 0x5E}, 599 { 0x18, 0x60}, 600 { 0x18, 0x62}, 601 { 0x18, 0x64}, 602 { 0x18, 0x66}, 603 { 0x18, 0x68}, 604 { 0x18, 0x6A}, 605 { 0x18, 0x6C}, 606 { 0x18, 0x6E}, 607 { 0x18, 0x70}, 608 { 0x18, 0x72}, 609 { 0x18, 0x74}, 610 { 0x18, 0x76}, 611 { 0x18, 0x78}, 612 { 0x18, 0x7A}, 613 { 0x18, 0x7C}, 614 { 0x18, 0x7E} 615 }; 616 static struct s_c2 SetRate48000[] = 617 { 618 { 0x14, 0x09}, // this line sets 48000, well actually a little less 619 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 620 { 0x18, 0x42}, 621 { 0x18, 0x45}, 622 { 0x18, 0x46}, 623 { 0x18, 0x48}, 624 { 0x18, 0x4A}, 625 { 0x18, 0x4C}, 626 { 0x18, 0x4E}, 627 { 0x18, 0x50}, 628 { 0x18, 0x52}, 629 { 0x18, 0x54}, 630 { 0x18, 0x56}, 631 { 0x18, 0x58}, 632 { 0x18, 0x5A}, 633 { 0x18, 0x5C}, 634 { 0x18, 0x5E}, 635 { 0x18, 0x60}, 636 { 0x18, 0x62}, 637 { 0x18, 0x64}, 638 { 0x18, 0x66}, 639 { 0x18, 0x68}, 640 { 0x18, 0x6A}, 641 { 0x18, 0x6C}, 642 { 0x18, 0x6E}, 643 { 0x18, 0x70}, 644 { 0x18, 0x73}, 645 { 0x18, 0x74}, 646 { 0x18, 0x76}, 647 { 0x18, 0x78}, 648 { 0x18, 0x7A}, 649 { 0x18, 0x7C}, 650 { 0x18, 0x7E} 651 }; 652 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) 653 654 static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs) 655 { 656 usX2Ydev_t* usX2Y = urb->context; 657 658 if (urb->status) { 659 snd_printk("snd_usX2Y_04Int() urb->status=%i\n", urb->status); 660 } 661 if (0 == --usX2Y->US04->len) 662 wake_up(&usX2Y->In04WaitQueue); 663 } 664 665 static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate) 666 { 667 int err = 0, i; 668 snd_usX2Y_urbSeq_t *us = NULL; 669 int *usbdata = NULL; 670 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; 671 672 if (usX2Y->rate != rate) { 673 us = kmalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); 674 if (NULL == us) { 675 err = -ENOMEM; 676 goto cleanup; 677 } 678 memset(us, 0, sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS); 679 usbdata = kmalloc(sizeof(int)*NOOF_SETRATE_URBS, GFP_KERNEL); 680 if (NULL == usbdata) { 681 err = -ENOMEM; 682 goto cleanup; 683 } 684 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 685 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { 686 err = -ENOMEM; 687 goto cleanup; 688 } 689 ((char*)(usbdata + i))[0] = ra[i].c1; 690 ((char*)(usbdata + i))[1] = ra[i].c2; 691 usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4), 692 usbdata + i, 2, i_usX2Y_04Int, usX2Y); 693 #ifdef OLD_USB 694 us->urb[i]->transfer_flags = USB_QUEUE_BULK; 695 #endif 696 } 697 us->submitted = 0; 698 us->len = NOOF_SETRATE_URBS; 699 usX2Y->US04 = us; 700 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); 701 usX2Y->US04 = NULL; 702 if (us->len) 703 err = -ENODEV; 704 cleanup: 705 if (us) { 706 us->submitted = 2*NOOF_SETRATE_URBS; 707 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 708 struct urb *urb = us->urb[i]; 709 if (urb->status) { 710 if (!err) 711 err = -ENODEV; 712 usb_kill_urb(urb); 713 } 714 usb_free_urb(urb); 715 } 716 usX2Y->US04 = NULL; 717 kfree(usbdata); 718 kfree(us); 719 if (!err) { 720 usX2Y->rate = rate; 721 } 722 } 723 } 724 725 return err; 726 } 727 728 729 static int usX2Y_format_set(usX2Ydev_t *usX2Y, snd_pcm_format_t format) 730 { 731 int alternate, err; 732 struct list_head* p; 733 if (format == SNDRV_PCM_FORMAT_S24_3LE) { 734 alternate = 2; 735 usX2Y->stride = 6; 736 } else { 737 alternate = 1; 738 usX2Y->stride = 4; 739 } 740 list_for_each(p, &usX2Y->chip.midi_list) { 741 snd_usbmidi_input_stop(p); 742 } 743 usb_kill_urb(usX2Y->In04urb); 744 if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) { 745 snd_printk("usb_set_interface error \n"); 746 return err; 747 } 748 usX2Y->In04urb->dev = usX2Y->chip.dev; 749 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); 750 list_for_each(p, &usX2Y->chip.midi_list) { 751 snd_usbmidi_input_start(p); 752 } 753 usX2Y->format = format; 754 usX2Y->rate = 0; 755 return err; 756 } 757 758 759 static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream, 760 snd_pcm_hw_params_t *hw_params) 761 { 762 int err = 0; 763 unsigned int rate = params_rate(hw_params); 764 snd_pcm_format_t format = params_format(hw_params); 765 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); 766 767 { // all pcm substreams off one usX2Y have to operate at the same rate & format 768 snd_card_t *card = substream->pstr->pcm->card; 769 struct list_head *list; 770 list_for_each(list, &card->devices) { 771 snd_device_t *dev; 772 snd_pcm_t *pcm; 773 int s; 774 dev = snd_device(list); 775 if (dev->type != SNDRV_DEV_PCM) 776 continue; 777 pcm = dev->device_data; 778 for (s = 0; s < 2; ++s) { 779 snd_pcm_substream_t *test_substream; 780 test_substream = pcm->streams[s].substream; 781 if (test_substream && test_substream != substream && 782 test_substream->runtime && 783 ((test_substream->runtime->format && 784 test_substream->runtime->format != format) || 785 (test_substream->runtime->rate && 786 test_substream->runtime->rate != rate))) 787 return -EINVAL; 788 } 789 } 790 } 791 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { 792 snd_printk("snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err); 793 return err; 794 } 795 return 0; 796 } 797 798 /* 799 * free the buffer 800 */ 801 static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream) 802 { 803 snd_pcm_runtime_t *runtime = substream->runtime; 804 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; 805 down(&subs->usX2Y->prepare_mutex); 806 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); 807 808 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { 809 snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 810 atomic_set(&subs->state, state_STOPPED); 811 usX2Y_urbs_release(subs); 812 if (!cap_subs->pcm_substream || 813 !cap_subs->pcm_substream->runtime || 814 !cap_subs->pcm_substream->runtime->status || 815 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { 816 atomic_set(&cap_subs->state, state_STOPPED); 817 usX2Y_urbs_release(cap_subs); 818 } 819 } else { 820 snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 821 if (atomic_read(&playback_subs->state) < state_PREPARED) { 822 atomic_set(&subs->state, state_STOPPED); 823 usX2Y_urbs_release(subs); 824 } 825 } 826 up(&subs->usX2Y->prepare_mutex); 827 return snd_pcm_lib_free_pages(substream); 828 } 829 /* 830 * prepare callback 831 * 832 * set format and initialize urbs 833 */ 834 static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream) 835 { 836 snd_pcm_runtime_t *runtime = substream->runtime; 837 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; 838 usX2Ydev_t *usX2Y = subs->usX2Y; 839 snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 840 int err = 0; 841 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); 842 843 down(&usX2Y->prepare_mutex); 844 usX2Y_subs_prepare(subs); 845 // Start hardware streams 846 // SyncStream first.... 847 if (atomic_read(&capsubs->state) < state_PREPARED) { 848 if (usX2Y->format != runtime->format) 849 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) 850 goto up_prepare_mutex; 851 if (usX2Y->rate != runtime->rate) 852 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) 853 goto up_prepare_mutex; 854 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); 855 if (0 > (err = usX2Y_urbs_start(capsubs))) 856 goto up_prepare_mutex; 857 } 858 859 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) 860 err = usX2Y_urbs_start(subs); 861 862 up_prepare_mutex: 863 up(&usX2Y->prepare_mutex); 864 return err; 865 } 866 867 static snd_pcm_hardware_t snd_usX2Y_2c = 868 { 869 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 870 SNDRV_PCM_INFO_BLOCK_TRANSFER | 871 SNDRV_PCM_INFO_MMAP_VALID), 872 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, 873 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 874 .rate_min = 44100, 875 .rate_max = 48000, 876 .channels_min = 2, 877 .channels_max = 2, 878 .buffer_bytes_max = (2*128*1024), 879 .period_bytes_min = 64, 880 .period_bytes_max = (128*1024), 881 .periods_min = 2, 882 .periods_max = 1024, 883 .fifo_size = 0 884 }; 885 886 887 888 static int snd_usX2Y_pcm_open(snd_pcm_substream_t *substream) 889 { 890 snd_usX2Y_substream_t *subs = ((snd_usX2Y_substream_t **) 891 snd_pcm_substream_chip(substream))[substream->stream]; 892 snd_pcm_runtime_t *runtime = substream->runtime; 893 894 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) 895 return -EBUSY; 896 897 runtime->hw = snd_usX2Y_2c; 898 runtime->private_data = subs; 899 subs->pcm_substream = substream; 900 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); 901 return 0; 902 } 903 904 905 906 static int snd_usX2Y_pcm_close(snd_pcm_substream_t *substream) 907 { 908 snd_pcm_runtime_t *runtime = substream->runtime; 909 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; 910 int err = 0; 911 912 subs->pcm_substream = NULL; 913 914 return err; 915 } 916 917 918 static snd_pcm_ops_t snd_usX2Y_pcm_ops = 919 { 920 .open = snd_usX2Y_pcm_open, 921 .close = snd_usX2Y_pcm_close, 922 .ioctl = snd_pcm_lib_ioctl, 923 .hw_params = snd_usX2Y_pcm_hw_params, 924 .hw_free = snd_usX2Y_pcm_hw_free, 925 .prepare = snd_usX2Y_pcm_prepare, 926 .trigger = snd_usX2Y_pcm_trigger, 927 .pointer = snd_usX2Y_pcm_pointer, 928 }; 929 930 931 /* 932 * free a usb stream instance 933 */ 934 static void usX2Y_audio_stream_free(snd_usX2Y_substream_t **usX2Y_substream) 935 { 936 if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) { 937 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); 938 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; 939 } 940 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); 941 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; 942 } 943 944 static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm) 945 { 946 snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data; 947 if (usX2Y_stream) { 948 snd_pcm_lib_preallocate_free_for_all(pcm); 949 usX2Y_audio_stream_free(usX2Y_stream); 950 } 951 } 952 953 static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint) 954 { 955 snd_pcm_t *pcm; 956 int err, i; 957 snd_usX2Y_substream_t **usX2Y_substream = 958 usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs; 959 960 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; 961 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) { 962 usX2Y_substream[i] = kcalloc(1, sizeof(snd_usX2Y_substream_t), GFP_KERNEL); 963 if (NULL == usX2Y_substream[i]) { 964 snd_printk(KERN_ERR "cannot malloc\n"); 965 return -ENOMEM; 966 } 967 usX2Y_substream[i]->usX2Y = usX2Y(card); 968 } 969 970 if (playback_endpoint) 971 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint; 972 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint; 973 974 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->chip.pcm_devs, 975 playback_endpoint ? 1 : 0, 1, 976 &pcm); 977 if (err < 0) { 978 usX2Y_audio_stream_free(usX2Y_substream); 979 return err; 980 } 981 982 if (playback_endpoint) 983 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops); 984 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops); 985 986 pcm->private_data = usX2Y_substream; 987 pcm->private_free = snd_usX2Y_pcm_private_free; 988 pcm->info_flags = 0; 989 990 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->chip.pcm_devs); 991 992 if ((playback_endpoint && 993 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream, 994 SNDRV_DMA_TYPE_CONTINUOUS, 995 snd_dma_continuous_data(GFP_KERNEL), 996 64*1024, 128*1024))) || 997 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 998 SNDRV_DMA_TYPE_CONTINUOUS, 999 snd_dma_continuous_data(GFP_KERNEL), 1000 64*1024, 128*1024))) { 1001 snd_usX2Y_pcm_private_free(pcm); 1002 return err; 1003 } 1004 usX2Y(card)->chip.pcm_devs++; 1005 1006 return 0; 1007 } 1008 1009 /* 1010 * create a chip instance and set its names. 1011 */ 1012 int usX2Y_audio_create(snd_card_t* card) 1013 { 1014 int err = 0; 1015 1016 INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list); 1017 1018 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8))) 1019 return err; 1020 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) == USB_ID_US428) 1021 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA))) 1022 return err; 1023 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) != USB_ID_US122) 1024 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122. 1025 return err; 1026 } 1027