1 /* -*- linux-c -*- * 2 * 3 * ALSA driver for the digigram lx6464es interface 4 * 5 * Copyright (c) 2008, 2009 Tim Blechmann <tim@klingt.org> 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; see the file COPYING. If not, write to 20 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 21 * Boston, MA 02111-1307, USA. 22 * 23 */ 24 25 #include <linux/module.h> 26 #include <linux/init.h> 27 #include <linux/pci.h> 28 #include <linux/delay.h> 29 #include <linux/slab.h> 30 31 #include <sound/initval.h> 32 #include <sound/control.h> 33 #include <sound/info.h> 34 35 #include "lx6464es.h" 36 37 MODULE_AUTHOR("Tim Blechmann"); 38 MODULE_LICENSE("GPL"); 39 MODULE_DESCRIPTION("digigram lx6464es"); 40 MODULE_SUPPORTED_DEVICE("{digigram lx6464es{}}"); 41 42 43 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; 44 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; 45 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 46 47 module_param_array(index, int, NULL, 0444); 48 MODULE_PARM_DESC(index, "Index value for Digigram LX6464ES interface."); 49 module_param_array(id, charp, NULL, 0444); 50 MODULE_PARM_DESC(id, "ID string for Digigram LX6464ES interface."); 51 module_param_array(enable, bool, NULL, 0444); 52 MODULE_PARM_DESC(enable, "Enable/disable specific Digigram LX6464ES soundcards."); 53 54 static const char card_name[] = "LX6464ES"; 55 56 57 #define PCI_DEVICE_ID_PLX_LX6464ES PCI_DEVICE_ID_PLX_9056 58 59 static const struct pci_device_id snd_lx6464es_ids[] = { 60 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES, 61 PCI_VENDOR_ID_DIGIGRAM, 62 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_SERIAL_SUBSYSTEM), 63 }, /* LX6464ES */ 64 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES, 65 PCI_VENDOR_ID_DIGIGRAM, 66 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_CAE_SERIAL_SUBSYSTEM), 67 }, /* LX6464ES-CAE */ 68 { 0, }, 69 }; 70 71 MODULE_DEVICE_TABLE(pci, snd_lx6464es_ids); 72 73 74 75 /* PGO pour USERo dans le registre pci_0x06/loc_0xEC */ 76 #define CHIPSC_RESET_XILINX (1L<<16) 77 78 79 /* alsa callbacks */ 80 static struct snd_pcm_hardware lx_caps = { 81 .info = (SNDRV_PCM_INFO_MMAP | 82 SNDRV_PCM_INFO_INTERLEAVED | 83 SNDRV_PCM_INFO_MMAP_VALID | 84 SNDRV_PCM_INFO_SYNC_START), 85 .formats = (SNDRV_PCM_FMTBIT_S16_LE | 86 SNDRV_PCM_FMTBIT_S16_BE | 87 SNDRV_PCM_FMTBIT_S24_3LE | 88 SNDRV_PCM_FMTBIT_S24_3BE), 89 .rates = (SNDRV_PCM_RATE_CONTINUOUS | 90 SNDRV_PCM_RATE_8000_192000), 91 .rate_min = 8000, 92 .rate_max = 192000, 93 .channels_min = 2, 94 .channels_max = 64, 95 .buffer_bytes_max = 64*2*3*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER, 96 .period_bytes_min = (2*2*MICROBLAZE_IBL_MIN*2), 97 .period_bytes_max = (4*64*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER), 98 .periods_min = 2, 99 .periods_max = MAX_STREAM_BUFFER, 100 }; 101 102 static int lx_set_granularity(struct lx6464es *chip, u32 gran); 103 104 105 static int lx_hardware_open(struct lx6464es *chip, 106 struct snd_pcm_substream *substream) 107 { 108 int err = 0; 109 struct snd_pcm_runtime *runtime = substream->runtime; 110 int channels = runtime->channels; 111 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 112 113 snd_pcm_uframes_t period_size = runtime->period_size; 114 115 dev_dbg(chip->card->dev, "allocating pipe for %d channels\n", channels); 116 err = lx_pipe_allocate(chip, 0, is_capture, channels); 117 if (err < 0) { 118 dev_err(chip->card->dev, LXP "allocating pipe failed\n"); 119 return err; 120 } 121 122 err = lx_set_granularity(chip, period_size); 123 if (err < 0) { 124 dev_err(chip->card->dev, "setting granularity to %ld failed\n", 125 period_size); 126 return err; 127 } 128 129 return 0; 130 } 131 132 static int lx_hardware_start(struct lx6464es *chip, 133 struct snd_pcm_substream *substream) 134 { 135 int err = 0; 136 struct snd_pcm_runtime *runtime = substream->runtime; 137 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 138 139 dev_dbg(chip->card->dev, "setting stream format\n"); 140 err = lx_stream_set_format(chip, runtime, 0, is_capture); 141 if (err < 0) { 142 dev_err(chip->card->dev, "setting stream format failed\n"); 143 return err; 144 } 145 146 dev_dbg(chip->card->dev, "starting pipe\n"); 147 err = lx_pipe_start(chip, 0, is_capture); 148 if (err < 0) { 149 dev_err(chip->card->dev, "starting pipe failed\n"); 150 return err; 151 } 152 153 dev_dbg(chip->card->dev, "waiting for pipe to start\n"); 154 err = lx_pipe_wait_for_start(chip, 0, is_capture); 155 if (err < 0) { 156 dev_err(chip->card->dev, "waiting for pipe failed\n"); 157 return err; 158 } 159 160 return err; 161 } 162 163 164 static int lx_hardware_stop(struct lx6464es *chip, 165 struct snd_pcm_substream *substream) 166 { 167 int err = 0; 168 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 169 170 dev_dbg(chip->card->dev, "pausing pipe\n"); 171 err = lx_pipe_pause(chip, 0, is_capture); 172 if (err < 0) { 173 dev_err(chip->card->dev, "pausing pipe failed\n"); 174 return err; 175 } 176 177 dev_dbg(chip->card->dev, "waiting for pipe to become idle\n"); 178 err = lx_pipe_wait_for_idle(chip, 0, is_capture); 179 if (err < 0) { 180 dev_err(chip->card->dev, "waiting for pipe failed\n"); 181 return err; 182 } 183 184 dev_dbg(chip->card->dev, "stopping pipe\n"); 185 err = lx_pipe_stop(chip, 0, is_capture); 186 if (err < 0) { 187 dev_err(chip->card->dev, "stopping pipe failed\n"); 188 return err; 189 } 190 191 return err; 192 } 193 194 195 static int lx_hardware_close(struct lx6464es *chip, 196 struct snd_pcm_substream *substream) 197 { 198 int err = 0; 199 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 200 201 dev_dbg(chip->card->dev, "releasing pipe\n"); 202 err = lx_pipe_release(chip, 0, is_capture); 203 if (err < 0) { 204 dev_err(chip->card->dev, "releasing pipe failed\n"); 205 return err; 206 } 207 208 return err; 209 } 210 211 212 static int lx_pcm_open(struct snd_pcm_substream *substream) 213 { 214 struct lx6464es *chip = snd_pcm_substream_chip(substream); 215 struct snd_pcm_runtime *runtime = substream->runtime; 216 int err = 0; 217 int board_rate; 218 219 dev_dbg(chip->card->dev, "->lx_pcm_open\n"); 220 mutex_lock(&chip->setup_mutex); 221 222 /* copy the struct snd_pcm_hardware struct */ 223 runtime->hw = lx_caps; 224 225 #if 0 226 /* buffer-size should better be multiple of period-size */ 227 err = snd_pcm_hw_constraint_integer(runtime, 228 SNDRV_PCM_HW_PARAM_PERIODS); 229 if (err < 0) { 230 dev_warn(chip->card->dev, "could not constrain periods\n"); 231 goto exit; 232 } 233 #endif 234 235 /* the clock rate cannot be changed */ 236 board_rate = chip->board_sample_rate; 237 err = snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_RATE, 238 board_rate); 239 240 if (err < 0) { 241 dev_warn(chip->card->dev, "could not constrain periods\n"); 242 goto exit; 243 } 244 245 /* constrain period size */ 246 err = snd_pcm_hw_constraint_minmax(runtime, 247 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 248 MICROBLAZE_IBL_MIN, 249 MICROBLAZE_IBL_MAX); 250 if (err < 0) { 251 dev_warn(chip->card->dev, 252 "could not constrain period size\n"); 253 goto exit; 254 } 255 256 snd_pcm_hw_constraint_step(runtime, 0, 257 SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32); 258 259 snd_pcm_set_sync(substream); 260 err = 0; 261 262 exit: 263 runtime->private_data = chip; 264 265 mutex_unlock(&chip->setup_mutex); 266 dev_dbg(chip->card->dev, "<-lx_pcm_open, %d\n", err); 267 return err; 268 } 269 270 static int lx_pcm_close(struct snd_pcm_substream *substream) 271 { 272 int err = 0; 273 dev_dbg(substream->pcm->card->dev, "->lx_pcm_close\n"); 274 return err; 275 } 276 277 static snd_pcm_uframes_t lx_pcm_stream_pointer(struct snd_pcm_substream 278 *substream) 279 { 280 struct lx6464es *chip = snd_pcm_substream_chip(substream); 281 snd_pcm_uframes_t pos; 282 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 283 284 struct lx_stream *lx_stream = is_capture ? &chip->capture_stream : 285 &chip->playback_stream; 286 287 dev_dbg(chip->card->dev, "->lx_pcm_stream_pointer\n"); 288 289 mutex_lock(&chip->lock); 290 pos = lx_stream->frame_pos * substream->runtime->period_size; 291 mutex_unlock(&chip->lock); 292 293 dev_dbg(chip->card->dev, "stream_pointer at %ld\n", pos); 294 return pos; 295 } 296 297 static int lx_pcm_prepare(struct snd_pcm_substream *substream) 298 { 299 struct lx6464es *chip = snd_pcm_substream_chip(substream); 300 int err = 0; 301 const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 302 303 dev_dbg(chip->card->dev, "->lx_pcm_prepare\n"); 304 305 mutex_lock(&chip->setup_mutex); 306 307 if (chip->hardware_running[is_capture]) { 308 err = lx_hardware_stop(chip, substream); 309 if (err < 0) { 310 dev_err(chip->card->dev, "failed to stop hardware. " 311 "Error code %d\n", err); 312 goto exit; 313 } 314 315 err = lx_hardware_close(chip, substream); 316 if (err < 0) { 317 dev_err(chip->card->dev, "failed to close hardware. " 318 "Error code %d\n", err); 319 goto exit; 320 } 321 } 322 323 dev_dbg(chip->card->dev, "opening hardware\n"); 324 err = lx_hardware_open(chip, substream); 325 if (err < 0) { 326 dev_err(chip->card->dev, "failed to open hardware. " 327 "Error code %d\n", err); 328 goto exit; 329 } 330 331 err = lx_hardware_start(chip, substream); 332 if (err < 0) { 333 dev_err(chip->card->dev, "failed to start hardware. " 334 "Error code %d\n", err); 335 goto exit; 336 } 337 338 chip->hardware_running[is_capture] = 1; 339 340 if (chip->board_sample_rate != substream->runtime->rate) { 341 if (!err) 342 chip->board_sample_rate = substream->runtime->rate; 343 } 344 345 exit: 346 mutex_unlock(&chip->setup_mutex); 347 return err; 348 } 349 350 static int lx_pcm_hw_params(struct snd_pcm_substream *substream, 351 struct snd_pcm_hw_params *hw_params, int is_capture) 352 { 353 struct lx6464es *chip = snd_pcm_substream_chip(substream); 354 int err = 0; 355 356 dev_dbg(chip->card->dev, "->lx_pcm_hw_params\n"); 357 358 mutex_lock(&chip->setup_mutex); 359 360 /* set dma buffer */ 361 err = snd_pcm_lib_malloc_pages(substream, 362 params_buffer_bytes(hw_params)); 363 364 if (is_capture) 365 chip->capture_stream.stream = substream; 366 else 367 chip->playback_stream.stream = substream; 368 369 mutex_unlock(&chip->setup_mutex); 370 return err; 371 } 372 373 static int lx_pcm_hw_params_playback(struct snd_pcm_substream *substream, 374 struct snd_pcm_hw_params *hw_params) 375 { 376 return lx_pcm_hw_params(substream, hw_params, 0); 377 } 378 379 static int lx_pcm_hw_params_capture(struct snd_pcm_substream *substream, 380 struct snd_pcm_hw_params *hw_params) 381 { 382 return lx_pcm_hw_params(substream, hw_params, 1); 383 } 384 385 static int lx_pcm_hw_free(struct snd_pcm_substream *substream) 386 { 387 struct lx6464es *chip = snd_pcm_substream_chip(substream); 388 int err = 0; 389 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 390 391 dev_dbg(chip->card->dev, "->lx_pcm_hw_free\n"); 392 mutex_lock(&chip->setup_mutex); 393 394 if (chip->hardware_running[is_capture]) { 395 err = lx_hardware_stop(chip, substream); 396 if (err < 0) { 397 dev_err(chip->card->dev, "failed to stop hardware. " 398 "Error code %d\n", err); 399 goto exit; 400 } 401 402 err = lx_hardware_close(chip, substream); 403 if (err < 0) { 404 dev_err(chip->card->dev, "failed to close hardware. " 405 "Error code %d\n", err); 406 goto exit; 407 } 408 409 chip->hardware_running[is_capture] = 0; 410 } 411 412 err = snd_pcm_lib_free_pages(substream); 413 414 if (is_capture) 415 chip->capture_stream.stream = NULL; 416 else 417 chip->playback_stream.stream = NULL; 418 419 exit: 420 mutex_unlock(&chip->setup_mutex); 421 return err; 422 } 423 424 static void lx_trigger_start(struct lx6464es *chip, struct lx_stream *lx_stream) 425 { 426 struct snd_pcm_substream *substream = lx_stream->stream; 427 const unsigned int is_capture = lx_stream->is_capture; 428 429 int err; 430 431 const u32 channels = substream->runtime->channels; 432 const u32 bytes_per_frame = channels * 3; 433 const u32 period_size = substream->runtime->period_size; 434 const u32 periods = substream->runtime->periods; 435 const u32 period_bytes = period_size * bytes_per_frame; 436 437 dma_addr_t buf = substream->dma_buffer.addr; 438 int i; 439 440 u32 needed, freed; 441 u32 size_array[5]; 442 443 for (i = 0; i != periods; ++i) { 444 u32 buffer_index = 0; 445 446 err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, 447 size_array); 448 dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", 449 needed, freed); 450 451 err = lx_buffer_give(chip, 0, is_capture, period_bytes, 452 lower_32_bits(buf), upper_32_bits(buf), 453 &buffer_index); 454 455 dev_dbg(chip->card->dev, "starting: buffer index %x on 0x%lx (%d bytes)\n", 456 buffer_index, (unsigned long)buf, period_bytes); 457 buf += period_bytes; 458 } 459 460 err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, size_array); 461 dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", needed, freed); 462 463 dev_dbg(chip->card->dev, "starting: starting stream\n"); 464 err = lx_stream_start(chip, 0, is_capture); 465 if (err < 0) 466 dev_err(chip->card->dev, "couldn't start stream\n"); 467 else 468 lx_stream->status = LX_STREAM_STATUS_RUNNING; 469 470 lx_stream->frame_pos = 0; 471 } 472 473 static void lx_trigger_stop(struct lx6464es *chip, struct lx_stream *lx_stream) 474 { 475 const unsigned int is_capture = lx_stream->is_capture; 476 int err; 477 478 dev_dbg(chip->card->dev, "stopping: stopping stream\n"); 479 err = lx_stream_stop(chip, 0, is_capture); 480 if (err < 0) 481 dev_err(chip->card->dev, "couldn't stop stream\n"); 482 else 483 lx_stream->status = LX_STREAM_STATUS_FREE; 484 485 } 486 487 static void lx_trigger_dispatch_stream(struct lx6464es *chip, 488 struct lx_stream *lx_stream) 489 { 490 switch (lx_stream->status) { 491 case LX_STREAM_STATUS_SCHEDULE_RUN: 492 lx_trigger_start(chip, lx_stream); 493 break; 494 495 case LX_STREAM_STATUS_SCHEDULE_STOP: 496 lx_trigger_stop(chip, lx_stream); 497 break; 498 499 default: 500 break; 501 } 502 } 503 504 static int lx_pcm_trigger_dispatch(struct lx6464es *chip, 505 struct lx_stream *lx_stream, int cmd) 506 { 507 int err = 0; 508 509 mutex_lock(&chip->lock); 510 switch (cmd) { 511 case SNDRV_PCM_TRIGGER_START: 512 lx_stream->status = LX_STREAM_STATUS_SCHEDULE_RUN; 513 break; 514 515 case SNDRV_PCM_TRIGGER_STOP: 516 lx_stream->status = LX_STREAM_STATUS_SCHEDULE_STOP; 517 break; 518 519 default: 520 err = -EINVAL; 521 goto exit; 522 } 523 524 lx_trigger_dispatch_stream(chip, &chip->capture_stream); 525 lx_trigger_dispatch_stream(chip, &chip->playback_stream); 526 527 exit: 528 mutex_unlock(&chip->lock); 529 return err; 530 } 531 532 533 static int lx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 534 { 535 struct lx6464es *chip = snd_pcm_substream_chip(substream); 536 const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 537 struct lx_stream *stream = is_capture ? &chip->capture_stream : 538 &chip->playback_stream; 539 540 dev_dbg(chip->card->dev, "->lx_pcm_trigger\n"); 541 542 return lx_pcm_trigger_dispatch(chip, stream, cmd); 543 } 544 545 static int snd_lx6464es_free(struct lx6464es *chip) 546 { 547 dev_dbg(chip->card->dev, "->snd_lx6464es_free\n"); 548 549 lx_irq_disable(chip); 550 551 if (chip->irq >= 0) 552 free_irq(chip->irq, chip); 553 554 iounmap(chip->port_dsp_bar); 555 ioport_unmap(chip->port_plx_remapped); 556 557 pci_release_regions(chip->pci); 558 pci_disable_device(chip->pci); 559 560 kfree(chip); 561 562 return 0; 563 } 564 565 static int snd_lx6464es_dev_free(struct snd_device *device) 566 { 567 return snd_lx6464es_free(device->device_data); 568 } 569 570 /* reset the dsp during initialization */ 571 static int lx_init_xilinx_reset(struct lx6464es *chip) 572 { 573 int i; 574 u32 plx_reg = lx_plx_reg_read(chip, ePLX_CHIPSC); 575 576 dev_dbg(chip->card->dev, "->lx_init_xilinx_reset\n"); 577 578 /* activate reset of xilinx */ 579 plx_reg &= ~CHIPSC_RESET_XILINX; 580 581 lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg); 582 msleep(1); 583 584 lx_plx_reg_write(chip, ePLX_MBOX3, 0); 585 msleep(1); 586 587 plx_reg |= CHIPSC_RESET_XILINX; 588 lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg); 589 590 /* deactivate reset of xilinx */ 591 for (i = 0; i != 100; ++i) { 592 u32 reg_mbox3; 593 msleep(10); 594 reg_mbox3 = lx_plx_reg_read(chip, ePLX_MBOX3); 595 if (reg_mbox3) { 596 dev_dbg(chip->card->dev, "xilinx reset done\n"); 597 dev_dbg(chip->card->dev, "xilinx took %d loops\n", i); 598 break; 599 } 600 } 601 602 /* todo: add some error handling? */ 603 604 /* clear mr */ 605 lx_dsp_reg_write(chip, eReg_CSM, 0); 606 607 /* le xilinx ES peut ne pas etre encore pret, on attend. */ 608 msleep(600); 609 610 return 0; 611 } 612 613 static int lx_init_xilinx_test(struct lx6464es *chip) 614 { 615 u32 reg; 616 617 dev_dbg(chip->card->dev, "->lx_init_xilinx_test\n"); 618 619 /* TEST if we have access to Xilinx/MicroBlaze */ 620 lx_dsp_reg_write(chip, eReg_CSM, 0); 621 622 reg = lx_dsp_reg_read(chip, eReg_CSM); 623 624 if (reg) { 625 dev_err(chip->card->dev, "Problem: Reg_CSM %x.\n", reg); 626 627 /* PCI9056_SPACE0_REMAP */ 628 lx_plx_reg_write(chip, ePLX_PCICR, 1); 629 630 reg = lx_dsp_reg_read(chip, eReg_CSM); 631 if (reg) { 632 dev_err(chip->card->dev, "Error: Reg_CSM %x.\n", reg); 633 return -EAGAIN; /* seems to be appropriate */ 634 } 635 } 636 637 dev_dbg(chip->card->dev, "Xilinx/MicroBlaze access test successful\n"); 638 639 return 0; 640 } 641 642 /* initialize ethersound */ 643 static int lx_init_ethersound_config(struct lx6464es *chip) 644 { 645 int i; 646 u32 orig_conf_es = lx_dsp_reg_read(chip, eReg_CONFES); 647 648 /* configure 64 io channels */ 649 u32 conf_es = (orig_conf_es & CONFES_READ_PART_MASK) | 650 (64 << IOCR_INPUTS_OFFSET) | 651 (64 << IOCR_OUTPUTS_OFFSET) | 652 (FREQ_RATIO_SINGLE_MODE << FREQ_RATIO_OFFSET); 653 654 dev_dbg(chip->card->dev, "->lx_init_ethersound\n"); 655 656 chip->freq_ratio = FREQ_RATIO_SINGLE_MODE; 657 658 /* 659 * write it to the card ! 660 * this actually kicks the ES xilinx, the first time since poweron. 661 * the MAC address in the Reg_ADMACESMSB Reg_ADMACESLSB registers 662 * is not ready before this is done, and the bit 2 in Reg_CSES is set. 663 * */ 664 lx_dsp_reg_write(chip, eReg_CONFES, conf_es); 665 666 for (i = 0; i != 1000; ++i) { 667 if (lx_dsp_reg_read(chip, eReg_CSES) & 4) { 668 dev_dbg(chip->card->dev, "ethersound initialized after %dms\n", 669 i); 670 goto ethersound_initialized; 671 } 672 msleep(1); 673 } 674 dev_warn(chip->card->dev, 675 "ethersound could not be initialized after %dms\n", i); 676 return -ETIMEDOUT; 677 678 ethersound_initialized: 679 dev_dbg(chip->card->dev, "ethersound initialized\n"); 680 return 0; 681 } 682 683 static int lx_init_get_version_features(struct lx6464es *chip) 684 { 685 u32 dsp_version; 686 687 int err; 688 689 dev_dbg(chip->card->dev, "->lx_init_get_version_features\n"); 690 691 err = lx_dsp_get_version(chip, &dsp_version); 692 693 if (err == 0) { 694 u32 freq; 695 696 dev_info(chip->card->dev, "DSP version: V%02d.%02d #%d\n", 697 (dsp_version>>16) & 0xff, (dsp_version>>8) & 0xff, 698 dsp_version & 0xff); 699 700 /* later: what firmware version do we expect? */ 701 702 /* retrieve Play/Rec features */ 703 /* done here because we may have to handle alternate 704 * DSP files. */ 705 /* later */ 706 707 /* init the EtherSound sample rate */ 708 err = lx_dsp_get_clock_frequency(chip, &freq); 709 if (err == 0) 710 chip->board_sample_rate = freq; 711 dev_dbg(chip->card->dev, "actual clock frequency %d\n", freq); 712 } else { 713 dev_err(chip->card->dev, "DSP corrupted \n"); 714 err = -EAGAIN; 715 } 716 717 return err; 718 } 719 720 static int lx_set_granularity(struct lx6464es *chip, u32 gran) 721 { 722 int err = 0; 723 u32 snapped_gran = MICROBLAZE_IBL_MIN; 724 725 dev_dbg(chip->card->dev, "->lx_set_granularity\n"); 726 727 /* blocksize is a power of 2 */ 728 while ((snapped_gran < gran) && 729 (snapped_gran < MICROBLAZE_IBL_MAX)) { 730 snapped_gran *= 2; 731 } 732 733 if (snapped_gran == chip->pcm_granularity) 734 return 0; 735 736 err = lx_dsp_set_granularity(chip, snapped_gran); 737 if (err < 0) { 738 dev_warn(chip->card->dev, "could not set granularity\n"); 739 err = -EAGAIN; 740 } 741 742 if (snapped_gran != gran) 743 dev_err(chip->card->dev, "snapped blocksize to %d\n", snapped_gran); 744 745 dev_dbg(chip->card->dev, "set blocksize on board %d\n", snapped_gran); 746 chip->pcm_granularity = snapped_gran; 747 748 return err; 749 } 750 751 /* initialize and test the xilinx dsp chip */ 752 static int lx_init_dsp(struct lx6464es *chip) 753 { 754 int err; 755 int i; 756 757 dev_dbg(chip->card->dev, "->lx_init_dsp\n"); 758 759 dev_dbg(chip->card->dev, "initialize board\n"); 760 err = lx_init_xilinx_reset(chip); 761 if (err) 762 return err; 763 764 dev_dbg(chip->card->dev, "testing board\n"); 765 err = lx_init_xilinx_test(chip); 766 if (err) 767 return err; 768 769 dev_dbg(chip->card->dev, "initialize ethersound configuration\n"); 770 err = lx_init_ethersound_config(chip); 771 if (err) 772 return err; 773 774 lx_irq_enable(chip); 775 776 /** \todo the mac address should be ready by not, but it isn't, 777 * so we wait for it */ 778 for (i = 0; i != 1000; ++i) { 779 err = lx_dsp_get_mac(chip); 780 if (err) 781 return err; 782 if (chip->mac_address[0] || chip->mac_address[1] || chip->mac_address[2] || 783 chip->mac_address[3] || chip->mac_address[4] || chip->mac_address[5]) 784 goto mac_ready; 785 msleep(1); 786 } 787 return -ETIMEDOUT; 788 789 mac_ready: 790 dev_dbg(chip->card->dev, "mac address ready read after: %dms\n", i); 791 dev_info(chip->card->dev, 792 "mac address: %02X.%02X.%02X.%02X.%02X.%02X\n", 793 chip->mac_address[0], chip->mac_address[1], chip->mac_address[2], 794 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 795 796 err = lx_init_get_version_features(chip); 797 if (err) 798 return err; 799 800 lx_set_granularity(chip, MICROBLAZE_IBL_DEFAULT); 801 802 chip->playback_mute = 0; 803 804 return err; 805 } 806 807 static const struct snd_pcm_ops lx_ops_playback = { 808 .open = lx_pcm_open, 809 .close = lx_pcm_close, 810 .ioctl = snd_pcm_lib_ioctl, 811 .prepare = lx_pcm_prepare, 812 .hw_params = lx_pcm_hw_params_playback, 813 .hw_free = lx_pcm_hw_free, 814 .trigger = lx_pcm_trigger, 815 .pointer = lx_pcm_stream_pointer, 816 }; 817 818 static const struct snd_pcm_ops lx_ops_capture = { 819 .open = lx_pcm_open, 820 .close = lx_pcm_close, 821 .ioctl = snd_pcm_lib_ioctl, 822 .prepare = lx_pcm_prepare, 823 .hw_params = lx_pcm_hw_params_capture, 824 .hw_free = lx_pcm_hw_free, 825 .trigger = lx_pcm_trigger, 826 .pointer = lx_pcm_stream_pointer, 827 }; 828 829 static int lx_pcm_create(struct lx6464es *chip) 830 { 831 int err; 832 struct snd_pcm *pcm; 833 834 u32 size = 64 * /* channels */ 835 3 * /* 24 bit samples */ 836 MAX_STREAM_BUFFER * /* periods */ 837 MICROBLAZE_IBL_MAX * /* frames per period */ 838 2; /* duplex */ 839 840 size = PAGE_ALIGN(size); 841 842 /* hardcoded device name & channel count */ 843 err = snd_pcm_new(chip->card, (char *)card_name, 0, 844 1, 1, &pcm); 845 if (err < 0) 846 return err; 847 848 pcm->private_data = chip; 849 850 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &lx_ops_playback); 851 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &lx_ops_capture); 852 853 pcm->info_flags = 0; 854 pcm->nonatomic = true; 855 strcpy(pcm->name, card_name); 856 857 err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 858 snd_dma_pci_data(chip->pci), 859 size, size); 860 if (err < 0) 861 return err; 862 863 chip->pcm = pcm; 864 chip->capture_stream.is_capture = 1; 865 866 return 0; 867 } 868 869 static int lx_control_playback_info(struct snd_kcontrol *kcontrol, 870 struct snd_ctl_elem_info *uinfo) 871 { 872 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 873 uinfo->count = 1; 874 uinfo->value.integer.min = 0; 875 uinfo->value.integer.max = 1; 876 return 0; 877 } 878 879 static int lx_control_playback_get(struct snd_kcontrol *kcontrol, 880 struct snd_ctl_elem_value *ucontrol) 881 { 882 struct lx6464es *chip = snd_kcontrol_chip(kcontrol); 883 ucontrol->value.integer.value[0] = chip->playback_mute; 884 return 0; 885 } 886 887 static int lx_control_playback_put(struct snd_kcontrol *kcontrol, 888 struct snd_ctl_elem_value *ucontrol) 889 { 890 struct lx6464es *chip = snd_kcontrol_chip(kcontrol); 891 int changed = 0; 892 int current_value = chip->playback_mute; 893 894 if (current_value != ucontrol->value.integer.value[0]) { 895 lx_level_unmute(chip, 0, !current_value); 896 chip->playback_mute = !current_value; 897 changed = 1; 898 } 899 return changed; 900 } 901 902 static struct snd_kcontrol_new lx_control_playback_switch = { 903 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 904 .name = "PCM Playback Switch", 905 .index = 0, 906 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 907 .private_value = 0, 908 .info = lx_control_playback_info, 909 .get = lx_control_playback_get, 910 .put = lx_control_playback_put 911 }; 912 913 914 915 static void lx_proc_levels_read(struct snd_info_entry *entry, 916 struct snd_info_buffer *buffer) 917 { 918 u32 levels[64]; 919 int err; 920 int i, j; 921 struct lx6464es *chip = entry->private_data; 922 923 snd_iprintf(buffer, "capture levels:\n"); 924 err = lx_level_peaks(chip, 1, 64, levels); 925 if (err < 0) 926 return; 927 928 for (i = 0; i != 8; ++i) { 929 for (j = 0; j != 8; ++j) 930 snd_iprintf(buffer, "%08x ", levels[i*8+j]); 931 snd_iprintf(buffer, "\n"); 932 } 933 934 snd_iprintf(buffer, "\nplayback levels:\n"); 935 936 err = lx_level_peaks(chip, 0, 64, levels); 937 if (err < 0) 938 return; 939 940 for (i = 0; i != 8; ++i) { 941 for (j = 0; j != 8; ++j) 942 snd_iprintf(buffer, "%08x ", levels[i*8+j]); 943 snd_iprintf(buffer, "\n"); 944 } 945 946 snd_iprintf(buffer, "\n"); 947 } 948 949 static int lx_proc_create(struct snd_card *card, struct lx6464es *chip) 950 { 951 struct snd_info_entry *entry; 952 int err = snd_card_proc_new(card, "levels", &entry); 953 if (err < 0) 954 return err; 955 956 snd_info_set_text_ops(entry, chip, lx_proc_levels_read); 957 return 0; 958 } 959 960 961 static int snd_lx6464es_create(struct snd_card *card, 962 struct pci_dev *pci, 963 struct lx6464es **rchip) 964 { 965 struct lx6464es *chip; 966 int err; 967 968 static struct snd_device_ops ops = { 969 .dev_free = snd_lx6464es_dev_free, 970 }; 971 972 dev_dbg(card->dev, "->snd_lx6464es_create\n"); 973 974 *rchip = NULL; 975 976 /* enable PCI device */ 977 err = pci_enable_device(pci); 978 if (err < 0) 979 return err; 980 981 pci_set_master(pci); 982 983 /* check if we can restrict PCI DMA transfers to 32 bits */ 984 err = dma_set_mask(&pci->dev, DMA_BIT_MASK(32)); 985 if (err < 0) { 986 dev_err(card->dev, 987 "architecture does not support 32bit PCI busmaster DMA\n"); 988 pci_disable_device(pci); 989 return -ENXIO; 990 } 991 992 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 993 if (chip == NULL) { 994 err = -ENOMEM; 995 goto alloc_failed; 996 } 997 998 chip->card = card; 999 chip->pci = pci; 1000 chip->irq = -1; 1001 1002 /* initialize synchronization structs */ 1003 mutex_init(&chip->lock); 1004 mutex_init(&chip->msg_lock); 1005 mutex_init(&chip->setup_mutex); 1006 1007 /* request resources */ 1008 err = pci_request_regions(pci, card_name); 1009 if (err < 0) 1010 goto request_regions_failed; 1011 1012 /* plx port */ 1013 chip->port_plx = pci_resource_start(pci, 1); 1014 chip->port_plx_remapped = ioport_map(chip->port_plx, 1015 pci_resource_len(pci, 1)); 1016 1017 /* dsp port */ 1018 chip->port_dsp_bar = pci_ioremap_bar(pci, 2); 1019 1020 err = request_threaded_irq(pci->irq, lx_interrupt, lx_threaded_irq, 1021 IRQF_SHARED, KBUILD_MODNAME, chip); 1022 if (err) { 1023 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1024 goto request_irq_failed; 1025 } 1026 chip->irq = pci->irq; 1027 1028 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); 1029 if (err < 0) 1030 goto device_new_failed; 1031 1032 err = lx_init_dsp(chip); 1033 if (err < 0) { 1034 dev_err(card->dev, "error during DSP initialization\n"); 1035 return err; 1036 } 1037 1038 err = lx_pcm_create(chip); 1039 if (err < 0) 1040 return err; 1041 1042 err = lx_proc_create(card, chip); 1043 if (err < 0) 1044 return err; 1045 1046 err = snd_ctl_add(card, snd_ctl_new1(&lx_control_playback_switch, 1047 chip)); 1048 if (err < 0) 1049 return err; 1050 1051 *rchip = chip; 1052 return 0; 1053 1054 device_new_failed: 1055 free_irq(pci->irq, chip); 1056 1057 request_irq_failed: 1058 pci_release_regions(pci); 1059 1060 request_regions_failed: 1061 kfree(chip); 1062 1063 alloc_failed: 1064 pci_disable_device(pci); 1065 1066 return err; 1067 } 1068 1069 static int snd_lx6464es_probe(struct pci_dev *pci, 1070 const struct pci_device_id *pci_id) 1071 { 1072 static int dev; 1073 struct snd_card *card; 1074 struct lx6464es *chip; 1075 int err; 1076 1077 dev_dbg(&pci->dev, "->snd_lx6464es_probe\n"); 1078 1079 if (dev >= SNDRV_CARDS) 1080 return -ENODEV; 1081 if (!enable[dev]) { 1082 dev++; 1083 return -ENOENT; 1084 } 1085 1086 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, 1087 0, &card); 1088 if (err < 0) 1089 return err; 1090 1091 err = snd_lx6464es_create(card, pci, &chip); 1092 if (err < 0) { 1093 dev_err(card->dev, "error during snd_lx6464es_create\n"); 1094 goto out_free; 1095 } 1096 1097 strcpy(card->driver, "LX6464ES"); 1098 sprintf(card->id, "LX6464ES_%02X%02X%02X", 1099 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 1100 1101 sprintf(card->shortname, "LX6464ES %02X.%02X.%02X.%02X.%02X.%02X", 1102 chip->mac_address[0], chip->mac_address[1], chip->mac_address[2], 1103 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 1104 1105 sprintf(card->longname, "%s at 0x%lx, 0x%p, irq %i", 1106 card->shortname, chip->port_plx, 1107 chip->port_dsp_bar, chip->irq); 1108 1109 err = snd_card_register(card); 1110 if (err < 0) 1111 goto out_free; 1112 1113 dev_dbg(chip->card->dev, "initialization successful\n"); 1114 pci_set_drvdata(pci, card); 1115 dev++; 1116 return 0; 1117 1118 out_free: 1119 snd_card_free(card); 1120 return err; 1121 1122 } 1123 1124 static void snd_lx6464es_remove(struct pci_dev *pci) 1125 { 1126 snd_card_free(pci_get_drvdata(pci)); 1127 } 1128 1129 1130 static struct pci_driver lx6464es_driver = { 1131 .name = KBUILD_MODNAME, 1132 .id_table = snd_lx6464es_ids, 1133 .probe = snd_lx6464es_probe, 1134 .remove = snd_lx6464es_remove, 1135 }; 1136 1137 module_pci_driver(lx6464es_driver); 1138