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 kfree(subs->tmpbuf); 405 subs->tmpbuf = NULL; 406 } 407 /* 408 * initialize a substream's urbs 409 */ 410 static int usX2Y_urbs_allocate(snd_usX2Y_substream_t *subs) 411 { 412 int i; 413 unsigned int pipe; 414 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 415 struct usb_device *dev = subs->usX2Y->chip.dev; 416 417 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) : 418 usb_rcvisocpipe(dev, subs->endpoint); 419 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback); 420 if (!subs->maxpacksize) 421 return -EINVAL; 422 423 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */ 424 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL); 425 if (NULL == subs->tmpbuf) { 426 snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); 427 return -ENOMEM; 428 } 429 } 430 /* allocate and initialize data urbs */ 431 for (i = 0; i < NRURBS; i++) { 432 struct urb** purb = subs->urb + i; 433 if (*purb) { 434 usb_kill_urb(*purb); 435 continue; 436 } 437 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL); 438 if (NULL == *purb) { 439 usX2Y_urbs_release(subs); 440 return -ENOMEM; 441 } 442 if (!is_playback && !(*purb)->transfer_buffer) { 443 /* allocate a capture buffer per urb */ 444 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); 445 if (NULL == (*purb)->transfer_buffer) { 446 usX2Y_urbs_release(subs); 447 return -ENOMEM; 448 } 449 } 450 (*purb)->dev = dev; 451 (*purb)->pipe = pipe; 452 (*purb)->number_of_packets = nr_of_packs(); 453 (*purb)->context = subs; 454 (*purb)->interval = 1; 455 (*purb)->complete = i_usX2Y_subs_startup; 456 } 457 return 0; 458 } 459 460 static void usX2Y_subs_startup(snd_usX2Y_substream_t *subs) 461 { 462 usX2Ydev_t *usX2Y = subs->usX2Y; 463 usX2Y->prepare_subs = subs; 464 subs->urb[0]->start_frame = -1; 465 wmb(); 466 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup); 467 } 468 469 static int usX2Y_urbs_start(snd_usX2Y_substream_t *subs) 470 { 471 int i, err; 472 usX2Ydev_t *usX2Y = subs->usX2Y; 473 474 if ((err = usX2Y_urbs_allocate(subs)) < 0) 475 return err; 476 subs->completed_urb = NULL; 477 for (i = 0; i < 4; i++) { 478 snd_usX2Y_substream_t *subs = usX2Y->subs[i]; 479 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED) 480 goto start; 481 } 482 usX2Y->wait_iso_frame = -1; 483 start: 484 { 485 usX2Y_subs_startup(subs); 486 for (i = 0; i < NRURBS; i++) { 487 struct urb *urb = subs->urb[i]; 488 if (usb_pipein(urb->pipe)) { 489 unsigned long pack; 490 if (0 == i) 491 atomic_set(&subs->state, state_STARTING3); 492 urb->dev = usX2Y->chip.dev; 493 urb->transfer_flags = URB_ISO_ASAP; 494 for (pack = 0; pack < nr_of_packs(); pack++) { 495 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack; 496 urb->iso_frame_desc[pack].length = subs->maxpacksize; 497 } 498 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs(); 499 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 500 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err); 501 err = -EPIPE; 502 goto cleanup; 503 } else { 504 if (0 > usX2Y->wait_iso_frame) 505 usX2Y->wait_iso_frame = urb->start_frame; 506 } 507 urb->transfer_flags = 0; 508 } else { 509 atomic_set(&subs->state, state_STARTING1); 510 break; 511 } 512 } 513 err = 0; 514 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs); 515 if (atomic_read(&subs->state) != state_PREPARED) { 516 err = -EPIPE; 517 } 518 519 cleanup: 520 if (err) { 521 usX2Y_subs_startup_finish(usX2Y); 522 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything 523 } 524 } 525 return err; 526 } 527 528 /* 529 * return the current pcm pointer. just return the hwptr_done value. 530 */ 531 static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream) 532 { 533 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data; 534 return subs->hwptr_done; 535 } 536 /* 537 * start/stop substream 538 */ 539 static int snd_usX2Y_pcm_trigger(snd_pcm_substream_t *substream, int cmd) 540 { 541 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data; 542 543 switch (cmd) { 544 case SNDRV_PCM_TRIGGER_START: 545 snd_printdd("snd_usX2Y_pcm_trigger(START)\n"); 546 if (atomic_read(&subs->state) == state_PREPARED && 547 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) { 548 atomic_set(&subs->state, state_PRERUNNING); 549 } else { 550 snd_printdd("\n"); 551 return -EPIPE; 552 } 553 break; 554 case SNDRV_PCM_TRIGGER_STOP: 555 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n"); 556 if (atomic_read(&subs->state) >= state_PRERUNNING) 557 atomic_set(&subs->state, state_PREPARED); 558 break; 559 default: 560 return -EINVAL; 561 } 562 return 0; 563 } 564 565 566 /* 567 * allocate a buffer, setup samplerate 568 * 569 * so far we use a physically linear buffer although packetize transfer 570 * doesn't need a continuous area. 571 * if sg buffer is supported on the later version of alsa, we'll follow 572 * that. 573 */ 574 static struct s_c2 575 { 576 char c1, c2; 577 } 578 SetRate44100[] = 579 { 580 { 0x14, 0x08}, // this line sets 44100, well actually a little less 581 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 582 { 0x18, 0x42}, 583 { 0x18, 0x45}, 584 { 0x18, 0x46}, 585 { 0x18, 0x48}, 586 { 0x18, 0x4A}, 587 { 0x18, 0x4C}, 588 { 0x18, 0x4E}, 589 { 0x18, 0x50}, 590 { 0x18, 0x52}, 591 { 0x18, 0x54}, 592 { 0x18, 0x56}, 593 { 0x18, 0x58}, 594 { 0x18, 0x5A}, 595 { 0x18, 0x5C}, 596 { 0x18, 0x5E}, 597 { 0x18, 0x60}, 598 { 0x18, 0x62}, 599 { 0x18, 0x64}, 600 { 0x18, 0x66}, 601 { 0x18, 0x68}, 602 { 0x18, 0x6A}, 603 { 0x18, 0x6C}, 604 { 0x18, 0x6E}, 605 { 0x18, 0x70}, 606 { 0x18, 0x72}, 607 { 0x18, 0x74}, 608 { 0x18, 0x76}, 609 { 0x18, 0x78}, 610 { 0x18, 0x7A}, 611 { 0x18, 0x7C}, 612 { 0x18, 0x7E} 613 }; 614 static struct s_c2 SetRate48000[] = 615 { 616 { 0x14, 0x09}, // this line sets 48000, well actually a little less 617 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 618 { 0x18, 0x42}, 619 { 0x18, 0x45}, 620 { 0x18, 0x46}, 621 { 0x18, 0x48}, 622 { 0x18, 0x4A}, 623 { 0x18, 0x4C}, 624 { 0x18, 0x4E}, 625 { 0x18, 0x50}, 626 { 0x18, 0x52}, 627 { 0x18, 0x54}, 628 { 0x18, 0x56}, 629 { 0x18, 0x58}, 630 { 0x18, 0x5A}, 631 { 0x18, 0x5C}, 632 { 0x18, 0x5E}, 633 { 0x18, 0x60}, 634 { 0x18, 0x62}, 635 { 0x18, 0x64}, 636 { 0x18, 0x66}, 637 { 0x18, 0x68}, 638 { 0x18, 0x6A}, 639 { 0x18, 0x6C}, 640 { 0x18, 0x6E}, 641 { 0x18, 0x70}, 642 { 0x18, 0x73}, 643 { 0x18, 0x74}, 644 { 0x18, 0x76}, 645 { 0x18, 0x78}, 646 { 0x18, 0x7A}, 647 { 0x18, 0x7C}, 648 { 0x18, 0x7E} 649 }; 650 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) 651 652 static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs) 653 { 654 usX2Ydev_t* usX2Y = urb->context; 655 656 if (urb->status) { 657 snd_printk("snd_usX2Y_04Int() urb->status=%i\n", urb->status); 658 } 659 if (0 == --usX2Y->US04->len) 660 wake_up(&usX2Y->In04WaitQueue); 661 } 662 663 static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate) 664 { 665 int err = 0, i; 666 snd_usX2Y_urbSeq_t *us = NULL; 667 int *usbdata = NULL; 668 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; 669 670 if (usX2Y->rate != rate) { 671 us = kmalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); 672 if (NULL == us) { 673 err = -ENOMEM; 674 goto cleanup; 675 } 676 memset(us, 0, sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS); 677 usbdata = kmalloc(sizeof(int)*NOOF_SETRATE_URBS, GFP_KERNEL); 678 if (NULL == usbdata) { 679 err = -ENOMEM; 680 goto cleanup; 681 } 682 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 683 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { 684 err = -ENOMEM; 685 goto cleanup; 686 } 687 ((char*)(usbdata + i))[0] = ra[i].c1; 688 ((char*)(usbdata + i))[1] = ra[i].c2; 689 usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4), 690 usbdata + i, 2, i_usX2Y_04Int, usX2Y); 691 #ifdef OLD_USB 692 us->urb[i]->transfer_flags = USB_QUEUE_BULK; 693 #endif 694 } 695 us->submitted = 0; 696 us->len = NOOF_SETRATE_URBS; 697 usX2Y->US04 = us; 698 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); 699 usX2Y->US04 = NULL; 700 if (us->len) 701 err = -ENODEV; 702 cleanup: 703 if (us) { 704 us->submitted = 2*NOOF_SETRATE_URBS; 705 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 706 struct urb *urb = us->urb[i]; 707 if (urb->status) { 708 if (!err) 709 err = -ENODEV; 710 usb_kill_urb(urb); 711 } 712 usb_free_urb(urb); 713 } 714 usX2Y->US04 = NULL; 715 kfree(usbdata); 716 kfree(us); 717 if (!err) { 718 usX2Y->rate = rate; 719 } 720 } 721 } 722 723 return err; 724 } 725 726 727 static int usX2Y_format_set(usX2Ydev_t *usX2Y, snd_pcm_format_t format) 728 { 729 int alternate, err; 730 struct list_head* p; 731 if (format == SNDRV_PCM_FORMAT_S24_3LE) { 732 alternate = 2; 733 usX2Y->stride = 6; 734 } else { 735 alternate = 1; 736 usX2Y->stride = 4; 737 } 738 list_for_each(p, &usX2Y->chip.midi_list) { 739 snd_usbmidi_input_stop(p); 740 } 741 usb_kill_urb(usX2Y->In04urb); 742 if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) { 743 snd_printk("usb_set_interface error \n"); 744 return err; 745 } 746 usX2Y->In04urb->dev = usX2Y->chip.dev; 747 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); 748 list_for_each(p, &usX2Y->chip.midi_list) { 749 snd_usbmidi_input_start(p); 750 } 751 usX2Y->format = format; 752 usX2Y->rate = 0; 753 return err; 754 } 755 756 757 static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream, 758 snd_pcm_hw_params_t *hw_params) 759 { 760 int err = 0; 761 unsigned int rate = params_rate(hw_params); 762 snd_pcm_format_t format = params_format(hw_params); 763 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); 764 765 { // all pcm substreams off one usX2Y have to operate at the same rate & format 766 snd_card_t *card = substream->pstr->pcm->card; 767 struct list_head *list; 768 list_for_each(list, &card->devices) { 769 snd_device_t *dev; 770 snd_pcm_t *pcm; 771 int s; 772 dev = snd_device(list); 773 if (dev->type != SNDRV_DEV_PCM) 774 continue; 775 pcm = dev->device_data; 776 for (s = 0; s < 2; ++s) { 777 snd_pcm_substream_t *test_substream; 778 test_substream = pcm->streams[s].substream; 779 if (test_substream && test_substream != substream && 780 test_substream->runtime && 781 ((test_substream->runtime->format && 782 test_substream->runtime->format != format) || 783 (test_substream->runtime->rate && 784 test_substream->runtime->rate != rate))) 785 return -EINVAL; 786 } 787 } 788 } 789 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { 790 snd_printk("snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err); 791 return err; 792 } 793 return 0; 794 } 795 796 /* 797 * free the buffer 798 */ 799 static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream) 800 { 801 snd_pcm_runtime_t *runtime = substream->runtime; 802 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; 803 down(&subs->usX2Y->prepare_mutex); 804 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); 805 806 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { 807 snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 808 atomic_set(&subs->state, state_STOPPED); 809 usX2Y_urbs_release(subs); 810 if (!cap_subs->pcm_substream || 811 !cap_subs->pcm_substream->runtime || 812 !cap_subs->pcm_substream->runtime->status || 813 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { 814 atomic_set(&cap_subs->state, state_STOPPED); 815 usX2Y_urbs_release(cap_subs); 816 } 817 } else { 818 snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 819 if (atomic_read(&playback_subs->state) < state_PREPARED) { 820 atomic_set(&subs->state, state_STOPPED); 821 usX2Y_urbs_release(subs); 822 } 823 } 824 up(&subs->usX2Y->prepare_mutex); 825 return snd_pcm_lib_free_pages(substream); 826 } 827 /* 828 * prepare callback 829 * 830 * set format and initialize urbs 831 */ 832 static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream) 833 { 834 snd_pcm_runtime_t *runtime = substream->runtime; 835 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; 836 usX2Ydev_t *usX2Y = subs->usX2Y; 837 snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 838 int err = 0; 839 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); 840 841 down(&usX2Y->prepare_mutex); 842 usX2Y_subs_prepare(subs); 843 // Start hardware streams 844 // SyncStream first.... 845 if (atomic_read(&capsubs->state) < state_PREPARED) { 846 if (usX2Y->format != runtime->format) 847 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) 848 goto up_prepare_mutex; 849 if (usX2Y->rate != runtime->rate) 850 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) 851 goto up_prepare_mutex; 852 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); 853 if (0 > (err = usX2Y_urbs_start(capsubs))) 854 goto up_prepare_mutex; 855 } 856 857 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) 858 err = usX2Y_urbs_start(subs); 859 860 up_prepare_mutex: 861 up(&usX2Y->prepare_mutex); 862 return err; 863 } 864 865 static snd_pcm_hardware_t snd_usX2Y_2c = 866 { 867 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 868 SNDRV_PCM_INFO_BLOCK_TRANSFER | 869 SNDRV_PCM_INFO_MMAP_VALID), 870 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, 871 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 872 .rate_min = 44100, 873 .rate_max = 48000, 874 .channels_min = 2, 875 .channels_max = 2, 876 .buffer_bytes_max = (2*128*1024), 877 .period_bytes_min = 64, 878 .period_bytes_max = (128*1024), 879 .periods_min = 2, 880 .periods_max = 1024, 881 .fifo_size = 0 882 }; 883 884 885 886 static int snd_usX2Y_pcm_open(snd_pcm_substream_t *substream) 887 { 888 snd_usX2Y_substream_t *subs = ((snd_usX2Y_substream_t **) 889 snd_pcm_substream_chip(substream))[substream->stream]; 890 snd_pcm_runtime_t *runtime = substream->runtime; 891 892 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) 893 return -EBUSY; 894 895 runtime->hw = snd_usX2Y_2c; 896 runtime->private_data = subs; 897 subs->pcm_substream = substream; 898 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); 899 return 0; 900 } 901 902 903 904 static int snd_usX2Y_pcm_close(snd_pcm_substream_t *substream) 905 { 906 snd_pcm_runtime_t *runtime = substream->runtime; 907 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; 908 int err = 0; 909 910 subs->pcm_substream = NULL; 911 912 return err; 913 } 914 915 916 static snd_pcm_ops_t snd_usX2Y_pcm_ops = 917 { 918 .open = snd_usX2Y_pcm_open, 919 .close = snd_usX2Y_pcm_close, 920 .ioctl = snd_pcm_lib_ioctl, 921 .hw_params = snd_usX2Y_pcm_hw_params, 922 .hw_free = snd_usX2Y_pcm_hw_free, 923 .prepare = snd_usX2Y_pcm_prepare, 924 .trigger = snd_usX2Y_pcm_trigger, 925 .pointer = snd_usX2Y_pcm_pointer, 926 }; 927 928 929 /* 930 * free a usb stream instance 931 */ 932 static void usX2Y_audio_stream_free(snd_usX2Y_substream_t **usX2Y_substream) 933 { 934 if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) { 935 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); 936 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; 937 } 938 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); 939 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; 940 } 941 942 static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm) 943 { 944 snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data; 945 if (usX2Y_stream) { 946 snd_pcm_lib_preallocate_free_for_all(pcm); 947 usX2Y_audio_stream_free(usX2Y_stream); 948 } 949 } 950 951 static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint) 952 { 953 snd_pcm_t *pcm; 954 int err, i; 955 snd_usX2Y_substream_t **usX2Y_substream = 956 usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs; 957 958 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; 959 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) { 960 usX2Y_substream[i] = kcalloc(1, sizeof(snd_usX2Y_substream_t), GFP_KERNEL); 961 if (NULL == usX2Y_substream[i]) { 962 snd_printk(KERN_ERR "cannot malloc\n"); 963 return -ENOMEM; 964 } 965 usX2Y_substream[i]->usX2Y = usX2Y(card); 966 } 967 968 if (playback_endpoint) 969 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint; 970 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint; 971 972 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->chip.pcm_devs, 973 playback_endpoint ? 1 : 0, 1, 974 &pcm); 975 if (err < 0) { 976 usX2Y_audio_stream_free(usX2Y_substream); 977 return err; 978 } 979 980 if (playback_endpoint) 981 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops); 982 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops); 983 984 pcm->private_data = usX2Y_substream; 985 pcm->private_free = snd_usX2Y_pcm_private_free; 986 pcm->info_flags = 0; 987 988 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->chip.pcm_devs); 989 990 if ((playback_endpoint && 991 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream, 992 SNDRV_DMA_TYPE_CONTINUOUS, 993 snd_dma_continuous_data(GFP_KERNEL), 994 64*1024, 128*1024))) || 995 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 996 SNDRV_DMA_TYPE_CONTINUOUS, 997 snd_dma_continuous_data(GFP_KERNEL), 998 64*1024, 128*1024))) { 999 snd_usX2Y_pcm_private_free(pcm); 1000 return err; 1001 } 1002 usX2Y(card)->chip.pcm_devs++; 1003 1004 return 0; 1005 } 1006 1007 /* 1008 * create a chip instance and set its names. 1009 */ 1010 int usX2Y_audio_create(snd_card_t* card) 1011 { 1012 int err = 0; 1013 1014 INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list); 1015 1016 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8))) 1017 return err; 1018 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) == USB_ID_US428) 1019 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA))) 1020 return err; 1021 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) != USB_ID_US122) 1022 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122. 1023 return err; 1024 } 1025