1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* -*- linux-c -*- * 3 * 4 * ALSA driver for the digigram lx6464es interface 5 * 6 * Copyright (c) 2008, 2009 Tim Blechmann <tim@klingt.org> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/init.h> 11 #include <linux/pci.h> 12 #include <linux/delay.h> 13 #include <linux/slab.h> 14 15 #include <sound/initval.h> 16 #include <sound/control.h> 17 #include <sound/info.h> 18 19 #include "lx6464es.h" 20 21 MODULE_AUTHOR("Tim Blechmann"); 22 MODULE_LICENSE("GPL"); 23 MODULE_DESCRIPTION("digigram lx6464es"); 24 MODULE_SUPPORTED_DEVICE("{digigram lx6464es{}}"); 25 26 27 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; 28 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; 29 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 30 31 module_param_array(index, int, NULL, 0444); 32 MODULE_PARM_DESC(index, "Index value for Digigram LX6464ES interface."); 33 module_param_array(id, charp, NULL, 0444); 34 MODULE_PARM_DESC(id, "ID string for Digigram LX6464ES interface."); 35 module_param_array(enable, bool, NULL, 0444); 36 MODULE_PARM_DESC(enable, "Enable/disable specific Digigram LX6464ES soundcards."); 37 38 static const char card_name[] = "LX6464ES"; 39 40 41 #define PCI_DEVICE_ID_PLX_LX6464ES PCI_DEVICE_ID_PLX_9056 42 43 static const struct pci_device_id snd_lx6464es_ids[] = { 44 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES, 45 PCI_VENDOR_ID_DIGIGRAM, 46 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_SERIAL_SUBSYSTEM), 47 }, /* LX6464ES */ 48 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES, 49 PCI_VENDOR_ID_DIGIGRAM, 50 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_CAE_SERIAL_SUBSYSTEM), 51 }, /* LX6464ES-CAE */ 52 { 0, }, 53 }; 54 55 MODULE_DEVICE_TABLE(pci, snd_lx6464es_ids); 56 57 58 59 /* PGO pour USERo dans le registre pci_0x06/loc_0xEC */ 60 #define CHIPSC_RESET_XILINX (1L<<16) 61 62 63 /* alsa callbacks */ 64 static const struct snd_pcm_hardware lx_caps = { 65 .info = (SNDRV_PCM_INFO_MMAP | 66 SNDRV_PCM_INFO_INTERLEAVED | 67 SNDRV_PCM_INFO_MMAP_VALID | 68 SNDRV_PCM_INFO_SYNC_START), 69 .formats = (SNDRV_PCM_FMTBIT_S16_LE | 70 SNDRV_PCM_FMTBIT_S16_BE | 71 SNDRV_PCM_FMTBIT_S24_3LE | 72 SNDRV_PCM_FMTBIT_S24_3BE), 73 .rates = (SNDRV_PCM_RATE_CONTINUOUS | 74 SNDRV_PCM_RATE_8000_192000), 75 .rate_min = 8000, 76 .rate_max = 192000, 77 .channels_min = 2, 78 .channels_max = 64, 79 .buffer_bytes_max = 64*2*3*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER, 80 .period_bytes_min = (2*2*MICROBLAZE_IBL_MIN*2), 81 .period_bytes_max = (4*64*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER), 82 .periods_min = 2, 83 .periods_max = MAX_STREAM_BUFFER, 84 }; 85 86 static int lx_set_granularity(struct lx6464es *chip, u32 gran); 87 88 89 static int lx_hardware_open(struct lx6464es *chip, 90 struct snd_pcm_substream *substream) 91 { 92 int err = 0; 93 struct snd_pcm_runtime *runtime = substream->runtime; 94 int channels = runtime->channels; 95 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 96 97 snd_pcm_uframes_t period_size = runtime->period_size; 98 99 dev_dbg(chip->card->dev, "allocating pipe for %d channels\n", channels); 100 err = lx_pipe_allocate(chip, 0, is_capture, channels); 101 if (err < 0) { 102 dev_err(chip->card->dev, LXP "allocating pipe failed\n"); 103 return err; 104 } 105 106 err = lx_set_granularity(chip, period_size); 107 if (err < 0) { 108 dev_err(chip->card->dev, "setting granularity to %ld failed\n", 109 period_size); 110 return err; 111 } 112 113 return 0; 114 } 115 116 static int lx_hardware_start(struct lx6464es *chip, 117 struct snd_pcm_substream *substream) 118 { 119 int err = 0; 120 struct snd_pcm_runtime *runtime = substream->runtime; 121 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 122 123 dev_dbg(chip->card->dev, "setting stream format\n"); 124 err = lx_stream_set_format(chip, runtime, 0, is_capture); 125 if (err < 0) { 126 dev_err(chip->card->dev, "setting stream format failed\n"); 127 return err; 128 } 129 130 dev_dbg(chip->card->dev, "starting pipe\n"); 131 err = lx_pipe_start(chip, 0, is_capture); 132 if (err < 0) { 133 dev_err(chip->card->dev, "starting pipe failed\n"); 134 return err; 135 } 136 137 dev_dbg(chip->card->dev, "waiting for pipe to start\n"); 138 err = lx_pipe_wait_for_start(chip, 0, is_capture); 139 if (err < 0) { 140 dev_err(chip->card->dev, "waiting for pipe failed\n"); 141 return err; 142 } 143 144 return err; 145 } 146 147 148 static int lx_hardware_stop(struct lx6464es *chip, 149 struct snd_pcm_substream *substream) 150 { 151 int err = 0; 152 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 153 154 dev_dbg(chip->card->dev, "pausing pipe\n"); 155 err = lx_pipe_pause(chip, 0, is_capture); 156 if (err < 0) { 157 dev_err(chip->card->dev, "pausing pipe failed\n"); 158 return err; 159 } 160 161 dev_dbg(chip->card->dev, "waiting for pipe to become idle\n"); 162 err = lx_pipe_wait_for_idle(chip, 0, is_capture); 163 if (err < 0) { 164 dev_err(chip->card->dev, "waiting for pipe failed\n"); 165 return err; 166 } 167 168 dev_dbg(chip->card->dev, "stopping pipe\n"); 169 err = lx_pipe_stop(chip, 0, is_capture); 170 if (err < 0) { 171 dev_err(chip->card->dev, "stopping pipe failed\n"); 172 return err; 173 } 174 175 return err; 176 } 177 178 179 static int lx_hardware_close(struct lx6464es *chip, 180 struct snd_pcm_substream *substream) 181 { 182 int err = 0; 183 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 184 185 dev_dbg(chip->card->dev, "releasing pipe\n"); 186 err = lx_pipe_release(chip, 0, is_capture); 187 if (err < 0) { 188 dev_err(chip->card->dev, "releasing pipe failed\n"); 189 return err; 190 } 191 192 return err; 193 } 194 195 196 static int lx_pcm_open(struct snd_pcm_substream *substream) 197 { 198 struct lx6464es *chip = snd_pcm_substream_chip(substream); 199 struct snd_pcm_runtime *runtime = substream->runtime; 200 int err = 0; 201 int board_rate; 202 203 dev_dbg(chip->card->dev, "->lx_pcm_open\n"); 204 mutex_lock(&chip->setup_mutex); 205 206 /* copy the struct snd_pcm_hardware struct */ 207 runtime->hw = lx_caps; 208 209 #if 0 210 /* buffer-size should better be multiple of period-size */ 211 err = snd_pcm_hw_constraint_integer(runtime, 212 SNDRV_PCM_HW_PARAM_PERIODS); 213 if (err < 0) { 214 dev_warn(chip->card->dev, "could not constrain periods\n"); 215 goto exit; 216 } 217 #endif 218 219 /* the clock rate cannot be changed */ 220 board_rate = chip->board_sample_rate; 221 err = snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_RATE, 222 board_rate); 223 224 if (err < 0) { 225 dev_warn(chip->card->dev, "could not constrain periods\n"); 226 goto exit; 227 } 228 229 /* constrain period size */ 230 err = snd_pcm_hw_constraint_minmax(runtime, 231 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 232 MICROBLAZE_IBL_MIN, 233 MICROBLAZE_IBL_MAX); 234 if (err < 0) { 235 dev_warn(chip->card->dev, 236 "could not constrain period size\n"); 237 goto exit; 238 } 239 240 snd_pcm_hw_constraint_step(runtime, 0, 241 SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32); 242 243 snd_pcm_set_sync(substream); 244 err = 0; 245 246 exit: 247 runtime->private_data = chip; 248 249 mutex_unlock(&chip->setup_mutex); 250 dev_dbg(chip->card->dev, "<-lx_pcm_open, %d\n", err); 251 return err; 252 } 253 254 static int lx_pcm_close(struct snd_pcm_substream *substream) 255 { 256 int err = 0; 257 dev_dbg(substream->pcm->card->dev, "->lx_pcm_close\n"); 258 return err; 259 } 260 261 static snd_pcm_uframes_t lx_pcm_stream_pointer(struct snd_pcm_substream 262 *substream) 263 { 264 struct lx6464es *chip = snd_pcm_substream_chip(substream); 265 snd_pcm_uframes_t pos; 266 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 267 268 struct lx_stream *lx_stream = is_capture ? &chip->capture_stream : 269 &chip->playback_stream; 270 271 dev_dbg(chip->card->dev, "->lx_pcm_stream_pointer\n"); 272 273 mutex_lock(&chip->lock); 274 pos = lx_stream->frame_pos * substream->runtime->period_size; 275 mutex_unlock(&chip->lock); 276 277 dev_dbg(chip->card->dev, "stream_pointer at %ld\n", pos); 278 return pos; 279 } 280 281 static int lx_pcm_prepare(struct snd_pcm_substream *substream) 282 { 283 struct lx6464es *chip = snd_pcm_substream_chip(substream); 284 int err = 0; 285 const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 286 287 dev_dbg(chip->card->dev, "->lx_pcm_prepare\n"); 288 289 mutex_lock(&chip->setup_mutex); 290 291 if (chip->hardware_running[is_capture]) { 292 err = lx_hardware_stop(chip, substream); 293 if (err < 0) { 294 dev_err(chip->card->dev, "failed to stop hardware. " 295 "Error code %d\n", err); 296 goto exit; 297 } 298 299 err = lx_hardware_close(chip, substream); 300 if (err < 0) { 301 dev_err(chip->card->dev, "failed to close hardware. " 302 "Error code %d\n", err); 303 goto exit; 304 } 305 } 306 307 dev_dbg(chip->card->dev, "opening hardware\n"); 308 err = lx_hardware_open(chip, substream); 309 if (err < 0) { 310 dev_err(chip->card->dev, "failed to open hardware. " 311 "Error code %d\n", err); 312 goto exit; 313 } 314 315 err = lx_hardware_start(chip, substream); 316 if (err < 0) { 317 dev_err(chip->card->dev, "failed to start hardware. " 318 "Error code %d\n", err); 319 goto exit; 320 } 321 322 chip->hardware_running[is_capture] = 1; 323 324 if (chip->board_sample_rate != substream->runtime->rate) { 325 if (!err) 326 chip->board_sample_rate = substream->runtime->rate; 327 } 328 329 exit: 330 mutex_unlock(&chip->setup_mutex); 331 return err; 332 } 333 334 static int lx_pcm_hw_params(struct snd_pcm_substream *substream, 335 struct snd_pcm_hw_params *hw_params, int is_capture) 336 { 337 struct lx6464es *chip = snd_pcm_substream_chip(substream); 338 int err = 0; 339 340 dev_dbg(chip->card->dev, "->lx_pcm_hw_params\n"); 341 342 mutex_lock(&chip->setup_mutex); 343 344 /* set dma buffer */ 345 err = snd_pcm_lib_malloc_pages(substream, 346 params_buffer_bytes(hw_params)); 347 348 if (is_capture) 349 chip->capture_stream.stream = substream; 350 else 351 chip->playback_stream.stream = substream; 352 353 mutex_unlock(&chip->setup_mutex); 354 return err; 355 } 356 357 static int lx_pcm_hw_params_playback(struct snd_pcm_substream *substream, 358 struct snd_pcm_hw_params *hw_params) 359 { 360 return lx_pcm_hw_params(substream, hw_params, 0); 361 } 362 363 static int lx_pcm_hw_params_capture(struct snd_pcm_substream *substream, 364 struct snd_pcm_hw_params *hw_params) 365 { 366 return lx_pcm_hw_params(substream, hw_params, 1); 367 } 368 369 static int lx_pcm_hw_free(struct snd_pcm_substream *substream) 370 { 371 struct lx6464es *chip = snd_pcm_substream_chip(substream); 372 int err = 0; 373 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 374 375 dev_dbg(chip->card->dev, "->lx_pcm_hw_free\n"); 376 mutex_lock(&chip->setup_mutex); 377 378 if (chip->hardware_running[is_capture]) { 379 err = lx_hardware_stop(chip, substream); 380 if (err < 0) { 381 dev_err(chip->card->dev, "failed to stop hardware. " 382 "Error code %d\n", err); 383 goto exit; 384 } 385 386 err = lx_hardware_close(chip, substream); 387 if (err < 0) { 388 dev_err(chip->card->dev, "failed to close hardware. " 389 "Error code %d\n", err); 390 goto exit; 391 } 392 393 chip->hardware_running[is_capture] = 0; 394 } 395 396 err = snd_pcm_lib_free_pages(substream); 397 398 if (is_capture) 399 chip->capture_stream.stream = NULL; 400 else 401 chip->playback_stream.stream = NULL; 402 403 exit: 404 mutex_unlock(&chip->setup_mutex); 405 return err; 406 } 407 408 static void lx_trigger_start(struct lx6464es *chip, struct lx_stream *lx_stream) 409 { 410 struct snd_pcm_substream *substream = lx_stream->stream; 411 const unsigned int is_capture = lx_stream->is_capture; 412 413 int err; 414 415 const u32 channels = substream->runtime->channels; 416 const u32 bytes_per_frame = channels * 3; 417 const u32 period_size = substream->runtime->period_size; 418 const u32 periods = substream->runtime->periods; 419 const u32 period_bytes = period_size * bytes_per_frame; 420 421 dma_addr_t buf = substream->dma_buffer.addr; 422 int i; 423 424 u32 needed, freed; 425 u32 size_array[5]; 426 427 for (i = 0; i != periods; ++i) { 428 u32 buffer_index = 0; 429 430 err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, 431 size_array); 432 dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", 433 needed, freed); 434 435 err = lx_buffer_give(chip, 0, is_capture, period_bytes, 436 lower_32_bits(buf), upper_32_bits(buf), 437 &buffer_index); 438 439 dev_dbg(chip->card->dev, "starting: buffer index %x on 0x%lx (%d bytes)\n", 440 buffer_index, (unsigned long)buf, period_bytes); 441 buf += period_bytes; 442 } 443 444 err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, size_array); 445 dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", needed, freed); 446 447 dev_dbg(chip->card->dev, "starting: starting stream\n"); 448 err = lx_stream_start(chip, 0, is_capture); 449 if (err < 0) 450 dev_err(chip->card->dev, "couldn't start stream\n"); 451 else 452 lx_stream->status = LX_STREAM_STATUS_RUNNING; 453 454 lx_stream->frame_pos = 0; 455 } 456 457 static void lx_trigger_stop(struct lx6464es *chip, struct lx_stream *lx_stream) 458 { 459 const unsigned int is_capture = lx_stream->is_capture; 460 int err; 461 462 dev_dbg(chip->card->dev, "stopping: stopping stream\n"); 463 err = lx_stream_stop(chip, 0, is_capture); 464 if (err < 0) 465 dev_err(chip->card->dev, "couldn't stop stream\n"); 466 else 467 lx_stream->status = LX_STREAM_STATUS_FREE; 468 469 } 470 471 static void lx_trigger_dispatch_stream(struct lx6464es *chip, 472 struct lx_stream *lx_stream) 473 { 474 switch (lx_stream->status) { 475 case LX_STREAM_STATUS_SCHEDULE_RUN: 476 lx_trigger_start(chip, lx_stream); 477 break; 478 479 case LX_STREAM_STATUS_SCHEDULE_STOP: 480 lx_trigger_stop(chip, lx_stream); 481 break; 482 483 default: 484 break; 485 } 486 } 487 488 static int lx_pcm_trigger_dispatch(struct lx6464es *chip, 489 struct lx_stream *lx_stream, int cmd) 490 { 491 int err = 0; 492 493 mutex_lock(&chip->lock); 494 switch (cmd) { 495 case SNDRV_PCM_TRIGGER_START: 496 lx_stream->status = LX_STREAM_STATUS_SCHEDULE_RUN; 497 break; 498 499 case SNDRV_PCM_TRIGGER_STOP: 500 lx_stream->status = LX_STREAM_STATUS_SCHEDULE_STOP; 501 break; 502 503 default: 504 err = -EINVAL; 505 goto exit; 506 } 507 508 lx_trigger_dispatch_stream(chip, &chip->capture_stream); 509 lx_trigger_dispatch_stream(chip, &chip->playback_stream); 510 511 exit: 512 mutex_unlock(&chip->lock); 513 return err; 514 } 515 516 517 static int lx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 518 { 519 struct lx6464es *chip = snd_pcm_substream_chip(substream); 520 const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 521 struct lx_stream *stream = is_capture ? &chip->capture_stream : 522 &chip->playback_stream; 523 524 dev_dbg(chip->card->dev, "->lx_pcm_trigger\n"); 525 526 return lx_pcm_trigger_dispatch(chip, stream, cmd); 527 } 528 529 static int snd_lx6464es_free(struct lx6464es *chip) 530 { 531 dev_dbg(chip->card->dev, "->snd_lx6464es_free\n"); 532 533 lx_irq_disable(chip); 534 535 if (chip->irq >= 0) 536 free_irq(chip->irq, chip); 537 538 iounmap(chip->port_dsp_bar); 539 ioport_unmap(chip->port_plx_remapped); 540 541 pci_release_regions(chip->pci); 542 pci_disable_device(chip->pci); 543 544 kfree(chip); 545 546 return 0; 547 } 548 549 static int snd_lx6464es_dev_free(struct snd_device *device) 550 { 551 return snd_lx6464es_free(device->device_data); 552 } 553 554 /* reset the dsp during initialization */ 555 static int lx_init_xilinx_reset(struct lx6464es *chip) 556 { 557 int i; 558 u32 plx_reg = lx_plx_reg_read(chip, ePLX_CHIPSC); 559 560 dev_dbg(chip->card->dev, "->lx_init_xilinx_reset\n"); 561 562 /* activate reset of xilinx */ 563 plx_reg &= ~CHIPSC_RESET_XILINX; 564 565 lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg); 566 msleep(1); 567 568 lx_plx_reg_write(chip, ePLX_MBOX3, 0); 569 msleep(1); 570 571 plx_reg |= CHIPSC_RESET_XILINX; 572 lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg); 573 574 /* deactivate reset of xilinx */ 575 for (i = 0; i != 100; ++i) { 576 u32 reg_mbox3; 577 msleep(10); 578 reg_mbox3 = lx_plx_reg_read(chip, ePLX_MBOX3); 579 if (reg_mbox3) { 580 dev_dbg(chip->card->dev, "xilinx reset done\n"); 581 dev_dbg(chip->card->dev, "xilinx took %d loops\n", i); 582 break; 583 } 584 } 585 586 /* todo: add some error handling? */ 587 588 /* clear mr */ 589 lx_dsp_reg_write(chip, eReg_CSM, 0); 590 591 /* le xilinx ES peut ne pas etre encore pret, on attend. */ 592 msleep(600); 593 594 return 0; 595 } 596 597 static int lx_init_xilinx_test(struct lx6464es *chip) 598 { 599 u32 reg; 600 601 dev_dbg(chip->card->dev, "->lx_init_xilinx_test\n"); 602 603 /* TEST if we have access to Xilinx/MicroBlaze */ 604 lx_dsp_reg_write(chip, eReg_CSM, 0); 605 606 reg = lx_dsp_reg_read(chip, eReg_CSM); 607 608 if (reg) { 609 dev_err(chip->card->dev, "Problem: Reg_CSM %x.\n", reg); 610 611 /* PCI9056_SPACE0_REMAP */ 612 lx_plx_reg_write(chip, ePLX_PCICR, 1); 613 614 reg = lx_dsp_reg_read(chip, eReg_CSM); 615 if (reg) { 616 dev_err(chip->card->dev, "Error: Reg_CSM %x.\n", reg); 617 return -EAGAIN; /* seems to be appropriate */ 618 } 619 } 620 621 dev_dbg(chip->card->dev, "Xilinx/MicroBlaze access test successful\n"); 622 623 return 0; 624 } 625 626 /* initialize ethersound */ 627 static int lx_init_ethersound_config(struct lx6464es *chip) 628 { 629 int i; 630 u32 orig_conf_es = lx_dsp_reg_read(chip, eReg_CONFES); 631 632 /* configure 64 io channels */ 633 u32 conf_es = (orig_conf_es & CONFES_READ_PART_MASK) | 634 (64 << IOCR_INPUTS_OFFSET) | 635 (64 << IOCR_OUTPUTS_OFFSET) | 636 (FREQ_RATIO_SINGLE_MODE << FREQ_RATIO_OFFSET); 637 638 dev_dbg(chip->card->dev, "->lx_init_ethersound\n"); 639 640 chip->freq_ratio = FREQ_RATIO_SINGLE_MODE; 641 642 /* 643 * write it to the card ! 644 * this actually kicks the ES xilinx, the first time since poweron. 645 * the MAC address in the Reg_ADMACESMSB Reg_ADMACESLSB registers 646 * is not ready before this is done, and the bit 2 in Reg_CSES is set. 647 * */ 648 lx_dsp_reg_write(chip, eReg_CONFES, conf_es); 649 650 for (i = 0; i != 1000; ++i) { 651 if (lx_dsp_reg_read(chip, eReg_CSES) & 4) { 652 dev_dbg(chip->card->dev, "ethersound initialized after %dms\n", 653 i); 654 goto ethersound_initialized; 655 } 656 msleep(1); 657 } 658 dev_warn(chip->card->dev, 659 "ethersound could not be initialized after %dms\n", i); 660 return -ETIMEDOUT; 661 662 ethersound_initialized: 663 dev_dbg(chip->card->dev, "ethersound initialized\n"); 664 return 0; 665 } 666 667 static int lx_init_get_version_features(struct lx6464es *chip) 668 { 669 u32 dsp_version; 670 671 int err; 672 673 dev_dbg(chip->card->dev, "->lx_init_get_version_features\n"); 674 675 err = lx_dsp_get_version(chip, &dsp_version); 676 677 if (err == 0) { 678 u32 freq; 679 680 dev_info(chip->card->dev, "DSP version: V%02d.%02d #%d\n", 681 (dsp_version>>16) & 0xff, (dsp_version>>8) & 0xff, 682 dsp_version & 0xff); 683 684 /* later: what firmware version do we expect? */ 685 686 /* retrieve Play/Rec features */ 687 /* done here because we may have to handle alternate 688 * DSP files. */ 689 /* later */ 690 691 /* init the EtherSound sample rate */ 692 err = lx_dsp_get_clock_frequency(chip, &freq); 693 if (err == 0) 694 chip->board_sample_rate = freq; 695 dev_dbg(chip->card->dev, "actual clock frequency %d\n", freq); 696 } else { 697 dev_err(chip->card->dev, "DSP corrupted \n"); 698 err = -EAGAIN; 699 } 700 701 return err; 702 } 703 704 static int lx_set_granularity(struct lx6464es *chip, u32 gran) 705 { 706 int err = 0; 707 u32 snapped_gran = MICROBLAZE_IBL_MIN; 708 709 dev_dbg(chip->card->dev, "->lx_set_granularity\n"); 710 711 /* blocksize is a power of 2 */ 712 while ((snapped_gran < gran) && 713 (snapped_gran < MICROBLAZE_IBL_MAX)) { 714 snapped_gran *= 2; 715 } 716 717 if (snapped_gran == chip->pcm_granularity) 718 return 0; 719 720 err = lx_dsp_set_granularity(chip, snapped_gran); 721 if (err < 0) { 722 dev_warn(chip->card->dev, "could not set granularity\n"); 723 err = -EAGAIN; 724 } 725 726 if (snapped_gran != gran) 727 dev_err(chip->card->dev, "snapped blocksize to %d\n", snapped_gran); 728 729 dev_dbg(chip->card->dev, "set blocksize on board %d\n", snapped_gran); 730 chip->pcm_granularity = snapped_gran; 731 732 return err; 733 } 734 735 /* initialize and test the xilinx dsp chip */ 736 static int lx_init_dsp(struct lx6464es *chip) 737 { 738 int err; 739 int i; 740 741 dev_dbg(chip->card->dev, "->lx_init_dsp\n"); 742 743 dev_dbg(chip->card->dev, "initialize board\n"); 744 err = lx_init_xilinx_reset(chip); 745 if (err) 746 return err; 747 748 dev_dbg(chip->card->dev, "testing board\n"); 749 err = lx_init_xilinx_test(chip); 750 if (err) 751 return err; 752 753 dev_dbg(chip->card->dev, "initialize ethersound configuration\n"); 754 err = lx_init_ethersound_config(chip); 755 if (err) 756 return err; 757 758 lx_irq_enable(chip); 759 760 /** \todo the mac address should be ready by not, but it isn't, 761 * so we wait for it */ 762 for (i = 0; i != 1000; ++i) { 763 err = lx_dsp_get_mac(chip); 764 if (err) 765 return err; 766 if (chip->mac_address[0] || chip->mac_address[1] || chip->mac_address[2] || 767 chip->mac_address[3] || chip->mac_address[4] || chip->mac_address[5]) 768 goto mac_ready; 769 msleep(1); 770 } 771 return -ETIMEDOUT; 772 773 mac_ready: 774 dev_dbg(chip->card->dev, "mac address ready read after: %dms\n", i); 775 dev_info(chip->card->dev, 776 "mac address: %02X.%02X.%02X.%02X.%02X.%02X\n", 777 chip->mac_address[0], chip->mac_address[1], chip->mac_address[2], 778 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 779 780 err = lx_init_get_version_features(chip); 781 if (err) 782 return err; 783 784 lx_set_granularity(chip, MICROBLAZE_IBL_DEFAULT); 785 786 chip->playback_mute = 0; 787 788 return err; 789 } 790 791 static const struct snd_pcm_ops lx_ops_playback = { 792 .open = lx_pcm_open, 793 .close = lx_pcm_close, 794 .ioctl = snd_pcm_lib_ioctl, 795 .prepare = lx_pcm_prepare, 796 .hw_params = lx_pcm_hw_params_playback, 797 .hw_free = lx_pcm_hw_free, 798 .trigger = lx_pcm_trigger, 799 .pointer = lx_pcm_stream_pointer, 800 }; 801 802 static const struct snd_pcm_ops lx_ops_capture = { 803 .open = lx_pcm_open, 804 .close = lx_pcm_close, 805 .ioctl = snd_pcm_lib_ioctl, 806 .prepare = lx_pcm_prepare, 807 .hw_params = lx_pcm_hw_params_capture, 808 .hw_free = lx_pcm_hw_free, 809 .trigger = lx_pcm_trigger, 810 .pointer = lx_pcm_stream_pointer, 811 }; 812 813 static int lx_pcm_create(struct lx6464es *chip) 814 { 815 int err; 816 struct snd_pcm *pcm; 817 818 u32 size = 64 * /* channels */ 819 3 * /* 24 bit samples */ 820 MAX_STREAM_BUFFER * /* periods */ 821 MICROBLAZE_IBL_MAX * /* frames per period */ 822 2; /* duplex */ 823 824 size = PAGE_ALIGN(size); 825 826 /* hardcoded device name & channel count */ 827 err = snd_pcm_new(chip->card, (char *)card_name, 0, 828 1, 1, &pcm); 829 if (err < 0) 830 return err; 831 832 pcm->private_data = chip; 833 834 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &lx_ops_playback); 835 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &lx_ops_capture); 836 837 pcm->info_flags = 0; 838 pcm->nonatomic = true; 839 strcpy(pcm->name, card_name); 840 841 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 842 snd_dma_pci_data(chip->pci), 843 size, size); 844 845 chip->pcm = pcm; 846 chip->capture_stream.is_capture = 1; 847 848 return 0; 849 } 850 851 static int lx_control_playback_info(struct snd_kcontrol *kcontrol, 852 struct snd_ctl_elem_info *uinfo) 853 { 854 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 855 uinfo->count = 1; 856 uinfo->value.integer.min = 0; 857 uinfo->value.integer.max = 1; 858 return 0; 859 } 860 861 static int lx_control_playback_get(struct snd_kcontrol *kcontrol, 862 struct snd_ctl_elem_value *ucontrol) 863 { 864 struct lx6464es *chip = snd_kcontrol_chip(kcontrol); 865 ucontrol->value.integer.value[0] = chip->playback_mute; 866 return 0; 867 } 868 869 static int lx_control_playback_put(struct snd_kcontrol *kcontrol, 870 struct snd_ctl_elem_value *ucontrol) 871 { 872 struct lx6464es *chip = snd_kcontrol_chip(kcontrol); 873 int changed = 0; 874 int current_value = chip->playback_mute; 875 876 if (current_value != ucontrol->value.integer.value[0]) { 877 lx_level_unmute(chip, 0, !current_value); 878 chip->playback_mute = !current_value; 879 changed = 1; 880 } 881 return changed; 882 } 883 884 static const struct snd_kcontrol_new lx_control_playback_switch = { 885 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 886 .name = "PCM Playback Switch", 887 .index = 0, 888 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 889 .private_value = 0, 890 .info = lx_control_playback_info, 891 .get = lx_control_playback_get, 892 .put = lx_control_playback_put 893 }; 894 895 896 897 static void lx_proc_levels_read(struct snd_info_entry *entry, 898 struct snd_info_buffer *buffer) 899 { 900 u32 levels[64]; 901 int err; 902 int i, j; 903 struct lx6464es *chip = entry->private_data; 904 905 snd_iprintf(buffer, "capture levels:\n"); 906 err = lx_level_peaks(chip, 1, 64, levels); 907 if (err < 0) 908 return; 909 910 for (i = 0; i != 8; ++i) { 911 for (j = 0; j != 8; ++j) 912 snd_iprintf(buffer, "%08x ", levels[i*8+j]); 913 snd_iprintf(buffer, "\n"); 914 } 915 916 snd_iprintf(buffer, "\nplayback levels:\n"); 917 918 err = lx_level_peaks(chip, 0, 64, levels); 919 if (err < 0) 920 return; 921 922 for (i = 0; i != 8; ++i) { 923 for (j = 0; j != 8; ++j) 924 snd_iprintf(buffer, "%08x ", levels[i*8+j]); 925 snd_iprintf(buffer, "\n"); 926 } 927 928 snd_iprintf(buffer, "\n"); 929 } 930 931 static int lx_proc_create(struct snd_card *card, struct lx6464es *chip) 932 { 933 return snd_card_ro_proc_new(card, "levels", chip, lx_proc_levels_read); 934 } 935 936 937 static int snd_lx6464es_create(struct snd_card *card, 938 struct pci_dev *pci, 939 struct lx6464es **rchip) 940 { 941 struct lx6464es *chip; 942 int err; 943 944 static struct snd_device_ops ops = { 945 .dev_free = snd_lx6464es_dev_free, 946 }; 947 948 dev_dbg(card->dev, "->snd_lx6464es_create\n"); 949 950 *rchip = NULL; 951 952 /* enable PCI device */ 953 err = pci_enable_device(pci); 954 if (err < 0) 955 return err; 956 957 pci_set_master(pci); 958 959 /* check if we can restrict PCI DMA transfers to 32 bits */ 960 err = dma_set_mask(&pci->dev, DMA_BIT_MASK(32)); 961 if (err < 0) { 962 dev_err(card->dev, 963 "architecture does not support 32bit PCI busmaster DMA\n"); 964 pci_disable_device(pci); 965 return -ENXIO; 966 } 967 968 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 969 if (chip == NULL) { 970 err = -ENOMEM; 971 goto alloc_failed; 972 } 973 974 chip->card = card; 975 chip->pci = pci; 976 chip->irq = -1; 977 978 /* initialize synchronization structs */ 979 mutex_init(&chip->lock); 980 mutex_init(&chip->msg_lock); 981 mutex_init(&chip->setup_mutex); 982 983 /* request resources */ 984 err = pci_request_regions(pci, card_name); 985 if (err < 0) 986 goto request_regions_failed; 987 988 /* plx port */ 989 chip->port_plx = pci_resource_start(pci, 1); 990 chip->port_plx_remapped = ioport_map(chip->port_plx, 991 pci_resource_len(pci, 1)); 992 993 /* dsp port */ 994 chip->port_dsp_bar = pci_ioremap_bar(pci, 2); 995 if (!chip->port_dsp_bar) { 996 dev_err(card->dev, "cannot remap PCI memory region\n"); 997 err = -ENOMEM; 998 goto remap_pci_failed; 999 } 1000 1001 err = request_threaded_irq(pci->irq, lx_interrupt, lx_threaded_irq, 1002 IRQF_SHARED, KBUILD_MODNAME, chip); 1003 if (err) { 1004 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1005 goto request_irq_failed; 1006 } 1007 chip->irq = pci->irq; 1008 1009 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); 1010 if (err < 0) 1011 goto device_new_failed; 1012 1013 err = lx_init_dsp(chip); 1014 if (err < 0) { 1015 dev_err(card->dev, "error during DSP initialization\n"); 1016 return err; 1017 } 1018 1019 err = lx_pcm_create(chip); 1020 if (err < 0) 1021 return err; 1022 1023 err = lx_proc_create(card, chip); 1024 if (err < 0) 1025 return err; 1026 1027 err = snd_ctl_add(card, snd_ctl_new1(&lx_control_playback_switch, 1028 chip)); 1029 if (err < 0) 1030 return err; 1031 1032 *rchip = chip; 1033 return 0; 1034 1035 device_new_failed: 1036 free_irq(pci->irq, chip); 1037 1038 request_irq_failed: 1039 iounmap(chip->port_dsp_bar); 1040 1041 remap_pci_failed: 1042 pci_release_regions(pci); 1043 1044 request_regions_failed: 1045 kfree(chip); 1046 1047 alloc_failed: 1048 pci_disable_device(pci); 1049 1050 return err; 1051 } 1052 1053 static int snd_lx6464es_probe(struct pci_dev *pci, 1054 const struct pci_device_id *pci_id) 1055 { 1056 static int dev; 1057 struct snd_card *card; 1058 struct lx6464es *chip; 1059 int err; 1060 1061 dev_dbg(&pci->dev, "->snd_lx6464es_probe\n"); 1062 1063 if (dev >= SNDRV_CARDS) 1064 return -ENODEV; 1065 if (!enable[dev]) { 1066 dev++; 1067 return -ENOENT; 1068 } 1069 1070 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, 1071 0, &card); 1072 if (err < 0) 1073 return err; 1074 1075 err = snd_lx6464es_create(card, pci, &chip); 1076 if (err < 0) { 1077 dev_err(card->dev, "error during snd_lx6464es_create\n"); 1078 goto out_free; 1079 } 1080 1081 strcpy(card->driver, "LX6464ES"); 1082 sprintf(card->id, "LX6464ES_%02X%02X%02X", 1083 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 1084 1085 sprintf(card->shortname, "LX6464ES %02X.%02X.%02X.%02X.%02X.%02X", 1086 chip->mac_address[0], chip->mac_address[1], chip->mac_address[2], 1087 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 1088 1089 sprintf(card->longname, "%s at 0x%lx, 0x%p, irq %i", 1090 card->shortname, chip->port_plx, 1091 chip->port_dsp_bar, chip->irq); 1092 1093 err = snd_card_register(card); 1094 if (err < 0) 1095 goto out_free; 1096 1097 dev_dbg(chip->card->dev, "initialization successful\n"); 1098 pci_set_drvdata(pci, card); 1099 dev++; 1100 return 0; 1101 1102 out_free: 1103 snd_card_free(card); 1104 return err; 1105 1106 } 1107 1108 static void snd_lx6464es_remove(struct pci_dev *pci) 1109 { 1110 snd_card_free(pci_get_drvdata(pci)); 1111 } 1112 1113 1114 static struct pci_driver lx6464es_driver = { 1115 .name = KBUILD_MODNAME, 1116 .id_table = snd_lx6464es_ids, 1117 .probe = snd_lx6464es_probe, 1118 .remove = snd_lx6464es_remove, 1119 }; 1120 1121 module_pci_driver(lx6464es_driver); 1122