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 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->chip.dev; /* we need to set this at each time */ 204 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 205 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err); 206 return err; 207 } 208 return 0; 209} 210 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 "Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n" 301 KERN_ERR "Most propably some urb of usb-frame %i is still missing.\n" 302 KERN_ERR "Cause could be too long delays in usb-hcd interrupt handling.\n", 303 usb_get_current_frame_number(usX2Y->chip.dev), 304 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 305 usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame); 306 usX2Y_clients_stop(usX2Y); 307} 308 309static void i_usX2Y_urb_complete(struct urb *urb) 310{ 311 struct snd_usX2Y_substream *subs = urb->context; 312 struct usX2Ydev *usX2Y = subs->usX2Y; 313 314 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) { 315 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", 316 usb_get_current_frame_number(usX2Y->chip.dev), 317 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", 318 urb->status, urb->start_frame); 319 return; 320 } 321 if (unlikely(urb->status)) { 322 usX2Y_error_urb_status(usX2Y, subs, urb); 323 return; 324 } 325 if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF))) 326 subs->completed_urb = urb; 327 else { 328 usX2Y_error_sequence(usX2Y, subs, urb); 329 return; 330 } 331 { 332 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE], 333 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 334 if (capsubs->completed_urb && 335 atomic_read(&capsubs->state) >= state_PREPARED && 336 (playbacksubs->completed_urb || 337 atomic_read(&playbacksubs->state) < state_PREPARED)) { 338 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) 339 usX2Y->wait_iso_frame += nr_of_packs(); 340 else { 341 snd_printdd("\n"); 342 usX2Y_clients_stop(usX2Y); 343 } 344 } 345 } 346} 347 348static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y, 349 void (*complete)(struct urb *)) 350{ 351 int s, u; 352 for (s = 0; s < 4; s++) { 353 struct snd_usX2Y_substream *subs = usX2Y->subs[s]; 354 if (NULL != subs) 355 for (u = 0; u < NRURBS; u++) { 356 struct urb * urb = subs->urb[u]; 357 if (NULL != urb) 358 urb->complete = complete; 359 } 360 } 361} 362 363static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y) 364{ 365 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete); 366 usX2Y->prepare_subs = NULL; 367} 368 369static void i_usX2Y_subs_startup(struct urb *urb) 370{ 371 struct snd_usX2Y_substream *subs = urb->context; 372 struct usX2Ydev *usX2Y = subs->usX2Y; 373 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs; 374 if (NULL != prepare_subs) 375 if (urb->start_frame == prepare_subs->urb[0]->start_frame) { 376 usX2Y_subs_startup_finish(usX2Y); 377 atomic_inc(&prepare_subs->state); 378 wake_up(&usX2Y->prepare_wait_queue); 379 } 380 381 i_usX2Y_urb_complete(urb); 382} 383 384static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs) 385{ 386 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", 387 subs, subs->endpoint, subs->urb[0], subs->urb[1]); 388 /* reset the pointer */ 389 subs->hwptr = 0; 390 subs->hwptr_done = 0; 391 subs->transfer_done = 0; 392} 393 394 395static void usX2Y_urb_release(struct urb **urb, int free_tb) 396{ 397 if (*urb) { 398 usb_kill_urb(*urb); 399 if (free_tb) 400 kfree((*urb)->transfer_buffer); 401 usb_free_urb(*urb); 402 *urb = NULL; 403 } 404} 405/* 406 * release a substreams urbs 407 */ 408static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs) 409{ 410 int i; 411 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint); 412 for (i = 0; i < NRURBS; i++) 413 usX2Y_urb_release(subs->urb + i, 414 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]); 415 416 kfree(subs->tmpbuf); 417 subs->tmpbuf = NULL; 418} 419/* 420 * initialize a substream's urbs 421 */ 422static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs) 423{ 424 int i; 425 unsigned int pipe; 426 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 427 struct usb_device *dev = subs->usX2Y->chip.dev; 428 429 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) : 430 usb_rcvisocpipe(dev, subs->endpoint); 431 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback); 432 if (!subs->maxpacksize) 433 return -EINVAL; 434 435 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */ 436 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL); 437 if (NULL == subs->tmpbuf) { 438 snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); 439 return -ENOMEM; 440 } 441 } 442 /* allocate and initialize data urbs */ 443 for (i = 0; i < NRURBS; i++) { 444 struct urb **purb = subs->urb + i; 445 if (*purb) { 446 usb_kill_urb(*purb); 447 continue; 448 } 449 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL); 450 if (NULL == *purb) { 451 usX2Y_urbs_release(subs); 452 return -ENOMEM; 453 } 454 if (!is_playback && !(*purb)->transfer_buffer) { 455 /* allocate a capture buffer per urb */ 456 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); 457 if (NULL == (*purb)->transfer_buffer) { 458 usX2Y_urbs_release(subs); 459 return -ENOMEM; 460 } 461 } 462 (*purb)->dev = dev; 463 (*purb)->pipe = pipe; 464 (*purb)->number_of_packets = nr_of_packs(); 465 (*purb)->context = subs; 466 (*purb)->interval = 1; 467 (*purb)->complete = i_usX2Y_subs_startup; 468 } 469 return 0; 470} 471 472static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs) 473{ 474 struct usX2Ydev *usX2Y = subs->usX2Y; 475 usX2Y->prepare_subs = subs; 476 subs->urb[0]->start_frame = -1; 477 wmb(); 478 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup); 479} 480 481static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs) 482{ 483 int i, err; 484 struct usX2Ydev *usX2Y = subs->usX2Y; 485 486 if ((err = usX2Y_urbs_allocate(subs)) < 0) 487 return err; 488 subs->completed_urb = NULL; 489 for (i = 0; i < 4; i++) { 490 struct snd_usX2Y_substream *subs = usX2Y->subs[i]; 491 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED) 492 goto start; 493 } 494 495 start: 496 usX2Y_subs_startup(subs); 497 for (i = 0; i < NRURBS; i++) { 498 struct urb *urb = subs->urb[i]; 499 if (usb_pipein(urb->pipe)) { 500 unsigned long pack; 501 if (0 == i) 502 atomic_set(&subs->state, state_STARTING3); 503 urb->dev = usX2Y->chip.dev; 504 urb->transfer_flags = URB_ISO_ASAP; 505 for (pack = 0; pack < nr_of_packs(); pack++) { 506 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack; 507 urb->iso_frame_desc[pack].length = subs->maxpacksize; 508 } 509 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs(); 510 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 511 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err); 512 err = -EPIPE; 513 goto cleanup; 514 } else 515 if (i == 0) 516 usX2Y->wait_iso_frame = urb->start_frame; 517 urb->transfer_flags = 0; 518 } else { 519 atomic_set(&subs->state, state_STARTING1); 520 break; 521 } 522 } 523 err = 0; 524 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs); 525 if (atomic_read(&subs->state) != state_PREPARED) 526 err = -EPIPE; 527 528 cleanup: 529 if (err) { 530 usX2Y_subs_startup_finish(usX2Y); 531 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything 532 } 533 return err; 534} 535 536/* 537 * return the current pcm pointer. just return the hwptr_done value. 538 */ 539static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream) 540{ 541 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 542 return subs->hwptr_done; 543} 544/* 545 * start/stop substream 546 */ 547static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 548{ 549 struct snd_usX2Y_substream *subs = substream->runtime->private_data; 550 551 switch (cmd) { 552 case SNDRV_PCM_TRIGGER_START: 553 snd_printdd("snd_usX2Y_pcm_trigger(START)\n"); 554 if (atomic_read(&subs->state) == state_PREPARED && 555 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) { 556 atomic_set(&subs->state, state_PRERUNNING); 557 } else { 558 snd_printdd("\n"); 559 return -EPIPE; 560 } 561 break; 562 case SNDRV_PCM_TRIGGER_STOP: 563 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n"); 564 if (atomic_read(&subs->state) >= state_PRERUNNING) 565 atomic_set(&subs->state, state_PREPARED); 566 break; 567 default: 568 return -EINVAL; 569 } 570 return 0; 571} 572 573 574/* 575 * allocate a buffer, setup samplerate 576 * 577 * so far we use a physically linear buffer although packetize transfer 578 * doesn't need a continuous area. 579 * if sg buffer is supported on the later version of alsa, we'll follow 580 * that. 581 */ 582static struct s_c2 583{ 584 char c1, c2; 585} 586 SetRate44100[] = 587{ 588 { 0x14, 0x08}, // this line sets 44100, well actually a little less 589 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 590 { 0x18, 0x42}, 591 { 0x18, 0x45}, 592 { 0x18, 0x46}, 593 { 0x18, 0x48}, 594 { 0x18, 0x4A}, 595 { 0x18, 0x4C}, 596 { 0x18, 0x4E}, 597 { 0x18, 0x50}, 598 { 0x18, 0x52}, 599 { 0x18, 0x54}, 600 { 0x18, 0x56}, 601 { 0x18, 0x58}, 602 { 0x18, 0x5A}, 603 { 0x18, 0x5C}, 604 { 0x18, 0x5E}, 605 { 0x18, 0x60}, 606 { 0x18, 0x62}, 607 { 0x18, 0x64}, 608 { 0x18, 0x66}, 609 { 0x18, 0x68}, 610 { 0x18, 0x6A}, 611 { 0x18, 0x6C}, 612 { 0x18, 0x6E}, 613 { 0x18, 0x70}, 614 { 0x18, 0x72}, 615 { 0x18, 0x74}, 616 { 0x18, 0x76}, 617 { 0x18, 0x78}, 618 { 0x18, 0x7A}, 619 { 0x18, 0x7C}, 620 { 0x18, 0x7E} 621}; 622static struct s_c2 SetRate48000[] = 623{ 624 { 0x14, 0x09}, // this line sets 48000, well actually a little less 625 { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... 626 { 0x18, 0x42}, 627 { 0x18, 0x45}, 628 { 0x18, 0x46}, 629 { 0x18, 0x48}, 630 { 0x18, 0x4A}, 631 { 0x18, 0x4C}, 632 { 0x18, 0x4E}, 633 { 0x18, 0x50}, 634 { 0x18, 0x52}, 635 { 0x18, 0x54}, 636 { 0x18, 0x56}, 637 { 0x18, 0x58}, 638 { 0x18, 0x5A}, 639 { 0x18, 0x5C}, 640 { 0x18, 0x5E}, 641 { 0x18, 0x60}, 642 { 0x18, 0x62}, 643 { 0x18, 0x64}, 644 { 0x18, 0x66}, 645 { 0x18, 0x68}, 646 { 0x18, 0x6A}, 647 { 0x18, 0x6C}, 648 { 0x18, 0x6E}, 649 { 0x18, 0x70}, 650 { 0x18, 0x73}, 651 { 0x18, 0x74}, 652 { 0x18, 0x76}, 653 { 0x18, 0x78}, 654 { 0x18, 0x7A}, 655 { 0x18, 0x7C}, 656 { 0x18, 0x7E} 657}; 658#define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) 659 660static void i_usX2Y_04Int(struct urb *urb) 661{ 662 struct usX2Ydev *usX2Y = urb->context; 663 664 if (urb->status) 665 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status); 666 if (0 == --usX2Y->US04->len) 667 wake_up(&usX2Y->In04WaitQueue); 668} 669 670static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate) 671{ 672 int err = 0, i; 673 struct snd_usX2Y_urbSeq *us = NULL; 674 int *usbdata = NULL; 675 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; 676 677 if (usX2Y->rate != rate) { 678 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); 679 if (NULL == us) { 680 err = -ENOMEM; 681 goto cleanup; 682 } 683 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL); 684 if (NULL == usbdata) { 685 err = -ENOMEM; 686 goto cleanup; 687 } 688 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 689 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { 690 err = -ENOMEM; 691 goto cleanup; 692 } 693 ((char*)(usbdata + i))[0] = ra[i].c1; 694 ((char*)(usbdata + i))[1] = ra[i].c2; 695 usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4), 696 usbdata + i, 2, i_usX2Y_04Int, usX2Y); 697#ifdef OLD_USB 698 us->urb[i]->transfer_flags = USB_QUEUE_BULK; 699#endif 700 } 701 us->submitted = 0; 702 us->len = NOOF_SETRATE_URBS; 703 usX2Y->US04 = us; 704 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); 705 usX2Y->US04 = NULL; 706 if (us->len) 707 err = -ENODEV; 708 cleanup: 709 if (us) { 710 us->submitted = 2*NOOF_SETRATE_URBS; 711 for (i = 0; i < NOOF_SETRATE_URBS; ++i) { 712 struct urb *urb = us->urb[i]; 713 if (urb->status) { 714 if (!err) 715 err = -ENODEV; 716 usb_kill_urb(urb); 717 } 718 usb_free_urb(urb); 719 } 720 usX2Y->US04 = NULL; 721 kfree(usbdata); 722 kfree(us); 723 if (!err) 724 usX2Y->rate = rate; 725 } 726 } 727 728 return err; 729} 730 731 732static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format) 733{ 734 int alternate, err; 735 struct list_head* p; 736 if (format == SNDRV_PCM_FORMAT_S24_3LE) { 737 alternate = 2; 738 usX2Y->stride = 6; 739 } else { 740 alternate = 1; 741 usX2Y->stride = 4; 742 } 743 list_for_each(p, &usX2Y->chip.midi_list) { 744 snd_usbmidi_input_stop(p); 745 } 746 usb_kill_urb(usX2Y->In04urb); 747 if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) { 748 snd_printk(KERN_ERR "usb_set_interface error \n"); 749 return err; 750 } 751 usX2Y->In04urb->dev = usX2Y->chip.dev; 752 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); 753 list_for_each(p, &usX2Y->chip.midi_list) { 754 snd_usbmidi_input_start(p); 755 } 756 usX2Y->format = format; 757 usX2Y->rate = 0; 758 return err; 759} 760 761 762static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream, 763 struct snd_pcm_hw_params *hw_params) 764{ 765 int err = 0; 766 unsigned int rate = params_rate(hw_params); 767 snd_pcm_format_t format = params_format(hw_params); 768 struct snd_card *card = substream->pstr->pcm->card; 769 struct list_head *list; 770 771 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); 772 // all pcm substreams off one usX2Y have to operate at the same rate & format 773 list_for_each(list, &card->devices) { 774 struct snd_device *dev; 775 struct snd_pcm *pcm; 776 int s; 777 dev = snd_device(list); 778 if (dev->type != SNDRV_DEV_PCM) 779 continue; 780 pcm = dev->device_data; 781 for (s = 0; s < 2; ++s) { 782 struct snd_pcm_substream *test_substream; 783 test_substream = pcm->streams[s].substream; 784 if (test_substream && test_substream != substream && 785 test_substream->runtime && 786 ((test_substream->runtime->format && 787 test_substream->runtime->format != format) || 788 (test_substream->runtime->rate && 789 test_substream->runtime->rate != rate))) 790 return -EINVAL; 791 } 792 } 793 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { 794 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", 795 substream, params_buffer_bytes(hw_params), err); 796 return err; 797 } 798 return 0; 799} 800 801/* 802 * free the buffer 803 */ 804static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream) 805{ 806 struct snd_pcm_runtime *runtime = substream->runtime; 807 struct snd_usX2Y_substream *subs = runtime->private_data; 808 mutex_lock(&subs->usX2Y->prepare_mutex); 809 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); 810 811 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { 812 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 813 atomic_set(&subs->state, state_STOPPED); 814 usX2Y_urbs_release(subs); 815 if (!cap_subs->pcm_substream || 816 !cap_subs->pcm_substream->runtime || 817 !cap_subs->pcm_substream->runtime->status || 818 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { 819 atomic_set(&cap_subs->state, state_STOPPED); 820 usX2Y_urbs_release(cap_subs); 821 } 822 } else { 823 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; 824 if (atomic_read(&playback_subs->state) < state_PREPARED) { 825 atomic_set(&subs->state, state_STOPPED); 826 usX2Y_urbs_release(subs); 827 } 828 } 829 mutex_unlock(&subs->usX2Y->prepare_mutex); 830 return snd_pcm_lib_free_pages(substream); 831} 832/* 833 * prepare callback 834 * 835 * set format and initialize urbs 836 */ 837static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream) 838{ 839 struct snd_pcm_runtime *runtime = substream->runtime; 840 struct snd_usX2Y_substream *subs = runtime->private_data; 841 struct usX2Ydev *usX2Y = subs->usX2Y; 842 struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; 843 int err = 0; 844 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); 845 846 mutex_lock(&usX2Y->prepare_mutex); 847 usX2Y_subs_prepare(subs); 848// Start hardware streams 849// SyncStream first.... 850 if (atomic_read(&capsubs->state) < state_PREPARED) { 851 if (usX2Y->format != runtime->format) 852 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) 853 goto up_prepare_mutex; 854 if (usX2Y->rate != runtime->rate) 855 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) 856 goto up_prepare_mutex; 857 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); 858 if (0 > (err = usX2Y_urbs_start(capsubs))) 859 goto up_prepare_mutex; 860 } 861 862 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) 863 err = usX2Y_urbs_start(subs); 864 865 up_prepare_mutex: 866 mutex_unlock(&usX2Y->prepare_mutex); 867 return err; 868} 869 870static struct snd_pcm_hardware snd_usX2Y_2c = 871{ 872 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 873 SNDRV_PCM_INFO_BLOCK_TRANSFER | 874 SNDRV_PCM_INFO_MMAP_VALID), 875 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, 876 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 877 .rate_min = 44100, 878 .rate_max = 48000, 879 .channels_min = 2, 880 .channels_max = 2, 881 .buffer_bytes_max = (2*128*1024), 882 .period_bytes_min = 64, 883 .period_bytes_max = (128*1024), 884 .periods_min = 2, 885 .periods_max = 1024, 886 .fifo_size = 0 887}; 888 889 890 891static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream) 892{ 893 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **) 894 snd_pcm_substream_chip(substream))[substream->stream]; 895 struct snd_pcm_runtime *runtime = substream->runtime; 896 897 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) 898 return -EBUSY; 899 900 runtime->hw = snd_usX2Y_2c; 901 runtime->private_data = subs; 902 subs->pcm_substream = substream; 903 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); 904 return 0; 905} 906 907 908 909static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream) 910{ 911 struct snd_pcm_runtime *runtime = substream->runtime; 912 struct snd_usX2Y_substream *subs = runtime->private_data; 913 914 subs->pcm_substream = NULL; 915 916 return 0; 917} 918 919 920static struct snd_pcm_ops snd_usX2Y_pcm_ops = 921{ 922 .open = snd_usX2Y_pcm_open, 923 .close = snd_usX2Y_pcm_close, 924 .ioctl = snd_pcm_lib_ioctl, 925 .hw_params = snd_usX2Y_pcm_hw_params, 926 .hw_free = snd_usX2Y_pcm_hw_free, 927 .prepare = snd_usX2Y_pcm_prepare, 928 .trigger = snd_usX2Y_pcm_trigger, 929 .pointer = snd_usX2Y_pcm_pointer, 930}; 931 932 933/* 934 * free a usb stream instance 935 */ 936static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream) 937{ 938 if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) { 939 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); 940 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; 941 } 942 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); 943 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; 944} 945 946static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm) 947{ 948 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data; 949 if (usX2Y_stream) 950 usX2Y_audio_stream_free(usX2Y_stream); 951} 952 953static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint) 954{ 955 struct snd_pcm *pcm; 956 int err, i; 957 struct snd_usX2Y_substream **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] = kzalloc(sizeof(struct snd_usX2Y_substream), 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 */ 1012int usX2Y_audio_create(struct snd_card *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