1/* 2 * US-X2Y AUDIO 3 * Copyright (c) 2002-2004 by Karsten Wiese 4 * 5 * based on 6 * 7 * (Tentative) USB Audio Driver for ALSA 8 * 9 * Main and PCM part 10 * 11 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> 12 * 13 * Many codes borrowed from audio.c by 14 * Alan Cox (alan@lxorguk.ukuu.org.uk) 15 * Thomas Sailer (sailer@ife.ee.ethz.ch) 16 * 17 * 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License as published by 20 * the Free Software Foundation; either version 2 of the License, or 21 * (at your option) any later version. 22 * 23 * This program is distributed in the hope that it will be useful, 24 * but WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 * GNU General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 31 */ 32 33 34#include <linux/interrupt.h> 35#include <linux/slab.h> 36#include <linux/usb.h> 37#include <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 70static 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 */ 126static 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 */ 181static 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 196static 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->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 211static 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 260static 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 289static 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 297static void usX2Y_error_sequence(struct usX2Ydev *usX2Y, 298 struct snd_usX2Y_substream *subs, struct urb *urb) 299{ 300 snd_printk(KERN_ERR 301"Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n" 302"Most propably some urb of usb-frame %i is still missing.\n" 303"Cause could be too long delays in usb-hcd interrupt handling.\n", 304 usb_get_current_frame_number(usX2Y->dev), 305 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 306 usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame); 307 usX2Y_clients_stop(usX2Y); 308} 309 310static void i_usX2Y_urb_complete(struct urb *urb) 311{ 312 struct snd_usX2Y_substream *subs = urb->context; 313 struct usX2Ydev *usX2Y = subs->usX2Y; 314 315 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) { 316 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", 317 usb_get_current_frame_number(usX2Y->dev), 318 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 319 urb->status, urb->start_frame); 320 return; 321 } 322 if (unlikely(urb->status)) { 323 usX2Y_error_urb_status(usX2Y, subs, urb); 324 return; 325 } 326 if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF))) 327 subs->completed_urb = urb; 328 else { 329 usX2Y_error_sequence(usX2Y, subs, urb); 330 return; 331 } 332 { 333 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE], 334 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 335 if (capsubs->completed_urb && 336 atomic_read(&capsubs->state) >= state_PREPARED && 337 (playbacksubs->completed_urb || 338 atomic_read(&playbacksubs->state) < state_PREPARED)) { 339 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) 340 usX2Y->wait_iso_frame += nr_of_packs(); 341 else { 342 snd_printdd("\n"); 343 usX2Y_clients_stop(usX2Y); 344 } 345 } 346 } 347} 348 349static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y, 350 void (*complete)(struct urb *)) 351{ 352 int s, u; 353 for (s = 0; s < 4; s++) { 354 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 355 if (NULL != subs) 356 for (u = 0; u < NRURBS; u++) { 357 struct urb * urb = subs->urb[u]; 358 if (NULL != urb) 359 urb->complete = complete; 360 } 361 } 362} 363 364static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y) 365{ 366 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete); 367 usX2Y->prepare_subs = NULL; 368} 369 370static void i_usX2Y_subs_startup(struct urb *urb) 371{ 372 struct snd_usX2Y_substream *subs = urb->context; 373 struct usX2Ydev *usX2Y = subs->usX2Y; 374 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs; 375 if (NULL != prepare_subs) 376 if (urb->start_frame == prepare_subs->urb[0]->start_frame) { 377 usX2Y_subs_startup_finish(usX2Y); 378 atomic_inc(&prepare_subs->state); 379 wake_up(&usX2Y->prepare_wait_queue); 380 } 381 382 i_usX2Y_urb_complete(urb); 383} 384 385static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs) 386{ 387 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", 388 subs, subs->endpoint, subs->urb[0], subs->urb[1]); 389 /* reset the pointer */ 390 subs->hwptr = 0; 391 subs->hwptr_done = 0; 392 subs->transfer_done = 0; 393} 394 395 396static void usX2Y_urb_release(struct urb **urb, int free_tb) 397{ 398 if (*urb) { 399 usb_kill_urb(*urb); 400 if (free_tb) 401 kfree((*urb)->transfer_buffer); 402 usb_free_urb(*urb); 403 *urb = NULL; 404 } 405} 406/* 407 * release a substreams urbs 408 */ 409static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs) 410{ 411 int i; 412 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint); 413 for (i = 0; i < NRURBS; i++) 414 usX2Y_urb_release(subs->urb + i, 415 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]); 416 417 kfree(subs->tmpbuf); 418 subs->tmpbuf = NULL; 419} 420/* 421 * initialize a substream's urbs 422 */ 423static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs) 424{ 425 int i; 426 unsigned int pipe; 427 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 428 struct usb_device *dev = subs->usX2Y->dev; 429 430 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) : 431 usb_rcvisocpipe(dev, subs->endpoint); 432 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback); 433 if (!subs->maxpacksize) 434 return -EINVAL; 435 436 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */ 437 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL); 438 if (NULL == subs->tmpbuf) { 439 snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); 440 return -ENOMEM; 441 } 442 } 443 /* allocate and initialize data urbs */ 444 for (i = 0; i < NRURBS; i++) { 445 struct urb **purb = subs->urb + i; 446 if (*purb) { 447 usb_kill_urb(*purb); 448 continue; 449 } 450 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL); 451 if (NULL == *purb) { 452 usX2Y_urbs_release(subs); 453 return -ENOMEM; 454 } 455 if (!is_playback && !(*purb)->transfer_buffer) { 456 /* allocate a capture buffer per urb */ 457 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); 458 if (NULL == (*purb)->transfer_buffer) { 459 usX2Y_urbs_release(subs); 460 return -ENOMEM; 461 } 462 } 463 (*purb)->dev = dev; 464 (*purb)->pipe = pipe; 465 (*purb)->number_of_packets = nr_of_packs(); 466 (*purb)->context = subs; 467 (*purb)->interval = 1; 468 (*purb)->complete = i_usX2Y_subs_startup; 469 } 470 return 0; 471} 472 473static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs) 474{ 475 struct usX2Ydev *usX2Y = subs->usX2Y; 476 usX2Y->prepare_subs = subs; 477 subs->urb[0]->start_frame = -1; 478 wmb(); 479 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup); 480} 481 482static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs) 483{ 484 int i, err; 485 struct usX2Ydev *usX2Y = subs->usX2Y; 486 487 if ((err = usX2Y_urbs_allocate(subs)) < 0) 488 return err; 489 subs->completed_urb = NULL; 490 for (i = 0; i < 4; i++) { 491 struct snd_usX2Y_substream *subs = usX2Y->subs[i]; 492 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED) 493 goto start; 494 } 495 496 start: 497 usX2Y_subs_startup(subs); 498 for (i = 0; i < NRURBS; i++) { 499 struct urb *urb = subs->urb[i]; 500 if (usb_pipein(urb->pipe)) { 501 unsigned long pack; 502 if (0 == i) 503 atomic_set(&subs->state, state_STARTING3); 504 urb->dev = usX2Y->dev; 505 urb->transfer_flags = URB_ISO_ASAP; 506 for (pack = 0; pack < nr_of_packs(); pack++) { 507 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack; 508 urb->iso_frame_desc[pack].length = subs->maxpacksize; 509 } 510 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs(); 511 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 512 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err); 513 err = -EPIPE; 514 goto cleanup; 515 } else 516 if (i == 0) 517 usX2Y->wait_iso_frame = urb->start_frame; 518 urb->transfer_flags = 0; 519 } else { 520 atomic_set(&subs->state, state_STARTING1); 521 break; 522 } 523 } 524 err = 0; 525 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs); 526 if (atomic_read(&subs->state) != state_PREPARED) 527 err = -EPIPE; 528 529 cleanup: 530 if (err) { 531 usX2Y_subs_startup_finish(usX2Y); 532 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything 533 } 534 return err; 535} 536 537/* 538 * return the current pcm pointer. just return the hwptr_done value. 539 */ 540static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream) 541{ 542 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 543 return subs->hwptr_done; 544} 545/* 546 * start/stop substream 547 */ 548static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 549{ 550 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 551 552 switch (cmd) { 553 case SNDRV_PCM_TRIGGER_START: 554 snd_printdd("snd_usX2Y_pcm_trigger(START)\n"); 555 if (atomic_read(&subs->state) == state_PREPARED && 556 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) { 557 atomic_set(&subs->state, state_PRERUNNING); 558 } else { 559 snd_printdd("\n"); 560 return -EPIPE; 561 } 562 break; 563 case SNDRV_PCM_TRIGGER_STOP: 564 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n"); 565 if (atomic_read(&subs->state) >= state_PRERUNNING) 566 atomic_set(&subs->state, state_PREPARED); 567 break; 568 default: 569 return -EINVAL; 570 } 571 return 0; 572} 573 574 575/* 576 * allocate a buffer, setup samplerate 577 * 578 * so far we use a physically linear buffer although packetize transfer 579 * doesn't need a continuous area. 580 * if sg buffer is supported on the later version of alsa, we'll follow 581 * that. 582 */ 583static struct s_c2 584{ 585 char c1, c2; 586} 587 SetRate44100[] = 588{ 589 { 0x14, 0x08}, // this line sets 44100, well actually a little less 590 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 591 { 0x18, 0x42}, 592 { 0x18, 0x45}, 593 { 0x18, 0x46}, 594 { 0x18, 0x48}, 595 { 0x18, 0x4A}, 596 { 0x18, 0x4C}, 597 { 0x18, 0x4E}, 598 { 0x18, 0x50}, 599 { 0x18, 0x52}, 600 { 0x18, 0x54}, 601 { 0x18, 0x56}, 602 { 0x18, 0x58}, 603 { 0x18, 0x5A}, 604 { 0x18, 0x5C}, 605 { 0x18, 0x5E}, 606 { 0x18, 0x60}, 607 { 0x18, 0x62}, 608 { 0x18, 0x64}, 609 { 0x18, 0x66}, 610 { 0x18, 0x68}, 611 { 0x18, 0x6A}, 612 { 0x18, 0x6C}, 613 { 0x18, 0x6E}, 614 { 0x18, 0x70}, 615 { 0x18, 0x72}, 616 { 0x18, 0x74}, 617 { 0x18, 0x76}, 618 { 0x18, 0x78}, 619 { 0x18, 0x7A}, 620 { 0x18, 0x7C}, 621 { 0x18, 0x7E} 622}; 623static struct s_c2 SetRate48000[] = 624{ 625 { 0x14, 0x09}, // this line sets 48000, well actually a little less 626 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 627 { 0x18, 0x42}, 628 { 0x18, 0x45}, 629 { 0x18, 0x46}, 630 { 0x18, 0x48}, 631 { 0x18, 0x4A}, 632 { 0x18, 0x4C}, 633 { 0x18, 0x4E}, 634 { 0x18, 0x50}, 635 { 0x18, 0x52}, 636 { 0x18, 0x54}, 637 { 0x18, 0x56}, 638 { 0x18, 0x58}, 639 { 0x18, 0x5A}, 640 { 0x18, 0x5C}, 641 { 0x18, 0x5E}, 642 { 0x18, 0x60}, 643 { 0x18, 0x62}, 644 { 0x18, 0x64}, 645 { 0x18, 0x66}, 646 { 0x18, 0x68}, 647 { 0x18, 0x6A}, 648 { 0x18, 0x6C}, 649 { 0x18, 0x6E}, 650 { 0x18, 0x70}, 651 { 0x18, 0x73}, 652 { 0x18, 0x74}, 653 { 0x18, 0x76}, 654 { 0x18, 0x78}, 655 { 0x18, 0x7A}, 656 { 0x18, 0x7C}, 657 { 0x18, 0x7E} 658}; 659#define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) 660 661static void i_usX2Y_04Int(struct urb *urb) 662{ 663 struct usX2Ydev *usX2Y = urb->context; 664 665 if (urb->status) 666 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status); 667 if (0 == --usX2Y->US04->len) 668 wake_up(&usX2Y->In04WaitQueue); 669} 670 671static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate) 672{ 673 int err = 0, i; 674 struct snd_usX2Y_urbSeq *us = NULL; 675 int *usbdata = NULL; 676 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; 677 678 if (usX2Y->rate != rate) { 679 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); 680 if (NULL == us) { 681 err = -ENOMEM; 682 goto cleanup; 683 } 684 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL); 685 if (NULL == usbdata) { 686 err = -ENOMEM; 687 goto cleanup; 688 } 689 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 690 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { 691 err = -ENOMEM; 692 goto cleanup; 693 } 694 ((char*)(usbdata + i))[0] = ra[i].c1; 695 ((char*)(usbdata + i))[1] = ra[i].c2; 696 usb_fill_bulk_urb(us->urb[i], usX2Y->dev, usb_sndbulkpipe(usX2Y->dev, 4), 697 usbdata + i, 2, i_usX2Y_04Int, usX2Y); 698#ifdef OLD_USB 699 us->urb[i]->transfer_flags = USB_QUEUE_BULK; 700#endif 701 } 702 us->submitted = 0; 703 us->len = NOOF_SETRATE_URBS; 704 usX2Y->US04 = us; 705 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); 706 usX2Y->US04 = NULL; 707 if (us->len) 708 err = -ENODEV; 709 cleanup: 710 if (us) { 711 us->submitted = 2*NOOF_SETRATE_URBS; 712 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 713 struct urb *urb = us->urb[i]; 714 if (urb->status) { 715 if (!err) 716 err = -ENODEV; 717 usb_kill_urb(urb); 718 } 719 usb_free_urb(urb); 720 } 721 usX2Y->US04 = NULL; 722 kfree(usbdata); 723 kfree(us); 724 if (!err) 725 usX2Y->rate = rate; 726 } 727 } 728 729 return err; 730} 731 732 733static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format) 734{ 735 int alternate, err; 736 struct list_head* p; 737 if (format == SNDRV_PCM_FORMAT_S24_3LE) { 738 alternate = 2; 739 usX2Y->stride = 6; 740 } else { 741 alternate = 1; 742 usX2Y->stride = 4; 743 } 744 list_for_each(p, &usX2Y->midi_list) { 745 snd_usbmidi_input_stop(p); 746 } 747 usb_kill_urb(usX2Y->In04urb); 748 if ((err = usb_set_interface(usX2Y->dev, 0, alternate))) { 749 snd_printk(KERN_ERR "usb_set_interface error \n"); 750 return err; 751 } 752 usX2Y->In04urb->dev = usX2Y->dev; 753 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); 754 list_for_each(p, &usX2Y->midi_list) { 755 snd_usbmidi_input_start(p); 756 } 757 usX2Y->format = format; 758 usX2Y->rate = 0; 759 return err; 760} 761 762 763static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream, 764 struct snd_pcm_hw_params *hw_params) 765{ 766 int err = 0; 767 unsigned int rate = params_rate(hw_params); 768 snd_pcm_format_t format = params_format(hw_params); 769 struct snd_card *card = substream->pstr->pcm->card; 770 struct list_head *list; 771 772 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); 773 // all pcm substreams off one usX2Y have to operate at the same rate & format 774 list_for_each(list, &card->devices) { 775 struct snd_device *dev; 776 struct snd_pcm *pcm; 777 int s; 778 dev = snd_device(list); 779 if (dev->type != SNDRV_DEV_PCM) 780 continue; 781 pcm = dev->device_data; 782 for (s = 0; s < 2; ++s) { 783 struct snd_pcm_substream *test_substream; 784 test_substream = pcm->streams[s].substream; 785 if (test_substream && test_substream != substream && 786 test_substream->runtime && 787 ((test_substream->runtime->format && 788 test_substream->runtime->format != format) || 789 (test_substream->runtime->rate && 790 test_substream->runtime->rate != rate))) 791 return -EINVAL; 792 } 793 } 794 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { 795 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", 796 substream, params_buffer_bytes(hw_params), err); 797 return err; 798 } 799 return 0; 800} 801 802/* 803 * free the buffer 804 */ 805static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream) 806{ 807 struct snd_pcm_runtime *runtime = substream->runtime; 808 struct snd_usX2Y_substream *subs = runtime->private_data; 809 mutex_lock(&subs->usX2Y->prepare_mutex); 810 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); 811 812 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { 813 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 814 atomic_set(&subs->state, state_STOPPED); 815 usX2Y_urbs_release(subs); 816 if (!cap_subs->pcm_substream || 817 !cap_subs->pcm_substream->runtime || 818 !cap_subs->pcm_substream->runtime->status || 819 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { 820 atomic_set(&cap_subs->state, state_STOPPED); 821 usX2Y_urbs_release(cap_subs); 822 } 823 } else { 824 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 825 if (atomic_read(&playback_subs->state) < state_PREPARED) { 826 atomic_set(&subs->state, state_STOPPED); 827 usX2Y_urbs_release(subs); 828 } 829 } 830 mutex_unlock(&subs->usX2Y->prepare_mutex); 831 return snd_pcm_lib_free_pages(substream); 832} 833/* 834 * prepare callback 835 * 836 * set format and initialize urbs 837 */ 838static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream) 839{ 840 struct snd_pcm_runtime *runtime = substream->runtime; 841 struct snd_usX2Y_substream *subs = runtime->private_data; 842 struct usX2Ydev *usX2Y = subs->usX2Y; 843 struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 844 int err = 0; 845 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); 846 847 mutex_lock(&usX2Y->prepare_mutex); 848 usX2Y_subs_prepare(subs); 849// Start hardware streams 850// SyncStream first.... 851 if (atomic_read(&capsubs->state) < state_PREPARED) { 852 if (usX2Y->format != runtime->format) 853 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) 854 goto up_prepare_mutex; 855 if (usX2Y->rate != runtime->rate) 856 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) 857 goto up_prepare_mutex; 858 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); 859 if (0 > (err = usX2Y_urbs_start(capsubs))) 860 goto up_prepare_mutex; 861 } 862 863 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) 864 err = usX2Y_urbs_start(subs); 865 866 up_prepare_mutex: 867 mutex_unlock(&usX2Y->prepare_mutex); 868 return err; 869} 870 871static struct snd_pcm_hardware snd_usX2Y_2c = 872{ 873 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 874 SNDRV_PCM_INFO_BLOCK_TRANSFER | 875 SNDRV_PCM_INFO_MMAP_VALID | 876 SNDRV_PCM_INFO_BATCH), 877 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, 878 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 879 .rate_min = 44100, 880 .rate_max = 48000, 881 .channels_min = 2, 882 .channels_max = 2, 883 .buffer_bytes_max = (2*128*1024), 884 .period_bytes_min = 64, 885 .period_bytes_max = (128*1024), 886 .periods_min = 2, 887 .periods_max = 1024, 888 .fifo_size = 0 889}; 890 891 892 893static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream) 894{ 895 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **) 896 snd_pcm_substream_chip(substream))[substream->stream]; 897 struct snd_pcm_runtime *runtime = substream->runtime; 898 899 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) 900 return -EBUSY; 901 902 runtime->hw = snd_usX2Y_2c; 903 runtime->private_data = subs; 904 subs->pcm_substream = substream; 905 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); 906 return 0; 907} 908 909 910 911static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream) 912{ 913 struct snd_pcm_runtime *runtime = substream->runtime; 914 struct snd_usX2Y_substream *subs = runtime->private_data; 915 916 subs->pcm_substream = NULL; 917 918 return 0; 919} 920 921 922static struct snd_pcm_ops snd_usX2Y_pcm_ops = 923{ 924 .open = snd_usX2Y_pcm_open, 925 .close = snd_usX2Y_pcm_close, 926 .ioctl = snd_pcm_lib_ioctl, 927 .hw_params = snd_usX2Y_pcm_hw_params, 928 .hw_free = snd_usX2Y_pcm_hw_free, 929 .prepare = snd_usX2Y_pcm_prepare, 930 .trigger = snd_usX2Y_pcm_trigger, 931 .pointer = snd_usX2Y_pcm_pointer, 932}; 933 934 935/* 936 * free a usb stream instance 937 */ 938static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream) 939{ 940 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); 941 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; 942 943 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); 944 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; 945} 946 947static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm) 948{ 949 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data; 950 if (usX2Y_stream) 951 usX2Y_audio_stream_free(usX2Y_stream); 952} 953 954static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint) 955{ 956 struct snd_pcm *pcm; 957 int err, i; 958 struct snd_usX2Y_substream **usX2Y_substream = 959 usX2Y(card)->subs + 2 * usX2Y(card)->pcm_devs; 960 961 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; 962 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) { 963 usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL); 964 if (NULL == usX2Y_substream[i]) { 965 snd_printk(KERN_ERR "cannot malloc\n"); 966 return -ENOMEM; 967 } 968 usX2Y_substream[i]->usX2Y = usX2Y(card); 969 } 970 971 if (playback_endpoint) 972 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint; 973 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint; 974 975 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->pcm_devs, 976 playback_endpoint ? 1 : 0, 1, 977 &pcm); 978 if (err < 0) { 979 usX2Y_audio_stream_free(usX2Y_substream); 980 return err; 981 } 982 983 if (playback_endpoint) 984 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops); 985 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops); 986 987 pcm->private_data = usX2Y_substream; 988 pcm->private_free = snd_usX2Y_pcm_private_free; 989 pcm->info_flags = 0; 990 991 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->pcm_devs); 992 993 if ((playback_endpoint && 994 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream, 995 SNDRV_DMA_TYPE_CONTINUOUS, 996 snd_dma_continuous_data(GFP_KERNEL), 997 64*1024, 128*1024))) || 998 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 999 SNDRV_DMA_TYPE_CONTINUOUS, 1000 snd_dma_continuous_data(GFP_KERNEL), 1001 64*1024, 128*1024))) { 1002 snd_usX2Y_pcm_private_free(pcm); 1003 return err; 1004 } 1005 usX2Y(card)->pcm_devs++; 1006 1007 return 0; 1008} 1009 1010/* 1011 * create a chip instance and set its names. 1012 */ 1013int usX2Y_audio_create(struct snd_card *card) 1014{ 1015 int err = 0; 1016 1017 INIT_LIST_HEAD(&usX2Y(card)->pcm_list); 1018 1019 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8))) 1020 return err; 1021 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) == USB_ID_US428) 1022 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA))) 1023 return err; 1024 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) != USB_ID_US122) 1025 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122. 1026 return err; 1027} 1028