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 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES, 53 PCI_VENDOR_ID_DIGIGRAM, 54 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ESE_SERIAL_SUBSYSTEM), 55 }, /* LX6464ESe */ 56 { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES, 57 PCI_VENDOR_ID_DIGIGRAM, 58 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ESE_CAE_SERIAL_SUBSYSTEM), 59 }, /* LX6464ESe-CAE */ 60 { 0, }, 61 }; 62 63 MODULE_DEVICE_TABLE(pci, snd_lx6464es_ids); 64 65 66 67 /* PGO pour USERo dans le registre pci_0x06/loc_0xEC */ 68 #define CHIPSC_RESET_XILINX (1L<<16) 69 70 71 /* alsa callbacks */ 72 static const struct snd_pcm_hardware lx_caps = { 73 .info = (SNDRV_PCM_INFO_MMAP | 74 SNDRV_PCM_INFO_INTERLEAVED | 75 SNDRV_PCM_INFO_MMAP_VALID | 76 SNDRV_PCM_INFO_SYNC_START), 77 .formats = (SNDRV_PCM_FMTBIT_S16_LE | 78 SNDRV_PCM_FMTBIT_S16_BE | 79 SNDRV_PCM_FMTBIT_S24_3LE | 80 SNDRV_PCM_FMTBIT_S24_3BE), 81 .rates = (SNDRV_PCM_RATE_CONTINUOUS | 82 SNDRV_PCM_RATE_8000_192000), 83 .rate_min = 8000, 84 .rate_max = 192000, 85 .channels_min = 2, 86 .channels_max = 64, 87 .buffer_bytes_max = 64*2*3*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER, 88 .period_bytes_min = (2*2*MICROBLAZE_IBL_MIN*2), 89 .period_bytes_max = (4*64*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER), 90 .periods_min = 2, 91 .periods_max = MAX_STREAM_BUFFER, 92 }; 93 94 static int lx_set_granularity(struct lx6464es *chip, u32 gran); 95 96 97 static int lx_hardware_open(struct lx6464es *chip, 98 struct snd_pcm_substream *substream) 99 { 100 int err = 0; 101 struct snd_pcm_runtime *runtime = substream->runtime; 102 int channels = runtime->channels; 103 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 104 105 snd_pcm_uframes_t period_size = runtime->period_size; 106 107 dev_dbg(chip->card->dev, "allocating pipe for %d channels\n", channels); 108 err = lx_pipe_allocate(chip, 0, is_capture, channels); 109 if (err < 0) { 110 dev_err(chip->card->dev, LXP "allocating pipe failed\n"); 111 return err; 112 } 113 114 err = lx_set_granularity(chip, period_size); 115 if (err < 0) { 116 dev_err(chip->card->dev, "setting granularity to %ld failed\n", 117 period_size); 118 return err; 119 } 120 121 return 0; 122 } 123 124 static int lx_hardware_start(struct lx6464es *chip, 125 struct snd_pcm_substream *substream) 126 { 127 int err = 0; 128 struct snd_pcm_runtime *runtime = substream->runtime; 129 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 130 131 dev_dbg(chip->card->dev, "setting stream format\n"); 132 err = lx_stream_set_format(chip, runtime, 0, is_capture); 133 if (err < 0) { 134 dev_err(chip->card->dev, "setting stream format failed\n"); 135 return err; 136 } 137 138 dev_dbg(chip->card->dev, "starting pipe\n"); 139 err = lx_pipe_start(chip, 0, is_capture); 140 if (err < 0) { 141 dev_err(chip->card->dev, "starting pipe failed\n"); 142 return err; 143 } 144 145 dev_dbg(chip->card->dev, "waiting for pipe to start\n"); 146 err = lx_pipe_wait_for_start(chip, 0, is_capture); 147 if (err < 0) { 148 dev_err(chip->card->dev, "waiting for pipe failed\n"); 149 return err; 150 } 151 152 return err; 153 } 154 155 156 static int lx_hardware_stop(struct lx6464es *chip, 157 struct snd_pcm_substream *substream) 158 { 159 int err = 0; 160 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 161 162 dev_dbg(chip->card->dev, "pausing pipe\n"); 163 err = lx_pipe_pause(chip, 0, is_capture); 164 if (err < 0) { 165 dev_err(chip->card->dev, "pausing pipe failed\n"); 166 return err; 167 } 168 169 dev_dbg(chip->card->dev, "waiting for pipe to become idle\n"); 170 err = lx_pipe_wait_for_idle(chip, 0, is_capture); 171 if (err < 0) { 172 dev_err(chip->card->dev, "waiting for pipe failed\n"); 173 return err; 174 } 175 176 dev_dbg(chip->card->dev, "stopping pipe\n"); 177 err = lx_pipe_stop(chip, 0, is_capture); 178 if (err < 0) { 179 dev_err(chip->card->dev, "stopping pipe failed\n"); 180 return err; 181 } 182 183 return err; 184 } 185 186 187 static int lx_hardware_close(struct lx6464es *chip, 188 struct snd_pcm_substream *substream) 189 { 190 int err = 0; 191 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 192 193 dev_dbg(chip->card->dev, "releasing pipe\n"); 194 err = lx_pipe_release(chip, 0, is_capture); 195 if (err < 0) { 196 dev_err(chip->card->dev, "releasing pipe failed\n"); 197 return err; 198 } 199 200 return err; 201 } 202 203 204 static int lx_pcm_open(struct snd_pcm_substream *substream) 205 { 206 struct lx6464es *chip = snd_pcm_substream_chip(substream); 207 struct snd_pcm_runtime *runtime = substream->runtime; 208 int err = 0; 209 int board_rate; 210 211 dev_dbg(chip->card->dev, "->lx_pcm_open\n"); 212 mutex_lock(&chip->setup_mutex); 213 214 /* copy the struct snd_pcm_hardware struct */ 215 runtime->hw = lx_caps; 216 217 #if 0 218 /* buffer-size should better be multiple of period-size */ 219 err = snd_pcm_hw_constraint_integer(runtime, 220 SNDRV_PCM_HW_PARAM_PERIODS); 221 if (err < 0) { 222 dev_warn(chip->card->dev, "could not constrain periods\n"); 223 goto exit; 224 } 225 #endif 226 227 /* the clock rate cannot be changed */ 228 board_rate = chip->board_sample_rate; 229 err = snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_RATE, 230 board_rate); 231 232 if (err < 0) { 233 dev_warn(chip->card->dev, "could not constrain periods\n"); 234 goto exit; 235 } 236 237 /* constrain period size */ 238 err = snd_pcm_hw_constraint_minmax(runtime, 239 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 240 MICROBLAZE_IBL_MIN, 241 MICROBLAZE_IBL_MAX); 242 if (err < 0) { 243 dev_warn(chip->card->dev, 244 "could not constrain period size\n"); 245 goto exit; 246 } 247 248 snd_pcm_hw_constraint_step(runtime, 0, 249 SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32); 250 251 snd_pcm_set_sync(substream); 252 err = 0; 253 254 exit: 255 runtime->private_data = chip; 256 257 mutex_unlock(&chip->setup_mutex); 258 dev_dbg(chip->card->dev, "<-lx_pcm_open, %d\n", err); 259 return err; 260 } 261 262 static int lx_pcm_close(struct snd_pcm_substream *substream) 263 { 264 dev_dbg(substream->pcm->card->dev, "->lx_pcm_close\n"); 265 return 0; 266 } 267 268 static snd_pcm_uframes_t lx_pcm_stream_pointer(struct snd_pcm_substream 269 *substream) 270 { 271 struct lx6464es *chip = snd_pcm_substream_chip(substream); 272 snd_pcm_uframes_t pos; 273 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 274 275 struct lx_stream *lx_stream = is_capture ? &chip->capture_stream : 276 &chip->playback_stream; 277 278 dev_dbg(chip->card->dev, "->lx_pcm_stream_pointer\n"); 279 280 mutex_lock(&chip->lock); 281 pos = lx_stream->frame_pos * substream->runtime->period_size; 282 mutex_unlock(&chip->lock); 283 284 dev_dbg(chip->card->dev, "stream_pointer at %ld\n", pos); 285 return pos; 286 } 287 288 static int lx_pcm_prepare(struct snd_pcm_substream *substream) 289 { 290 struct lx6464es *chip = snd_pcm_substream_chip(substream); 291 int err = 0; 292 const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 293 294 dev_dbg(chip->card->dev, "->lx_pcm_prepare\n"); 295 296 mutex_lock(&chip->setup_mutex); 297 298 if (chip->hardware_running[is_capture]) { 299 err = lx_hardware_stop(chip, substream); 300 if (err < 0) { 301 dev_err(chip->card->dev, "failed to stop hardware. " 302 "Error code %d\n", err); 303 goto exit; 304 } 305 306 err = lx_hardware_close(chip, substream); 307 if (err < 0) { 308 dev_err(chip->card->dev, "failed to close hardware. " 309 "Error code %d\n", err); 310 goto exit; 311 } 312 } 313 314 dev_dbg(chip->card->dev, "opening hardware\n"); 315 err = lx_hardware_open(chip, substream); 316 if (err < 0) { 317 dev_err(chip->card->dev, "failed to open hardware. " 318 "Error code %d\n", err); 319 goto exit; 320 } 321 322 err = lx_hardware_start(chip, substream); 323 if (err < 0) { 324 dev_err(chip->card->dev, "failed to start hardware. " 325 "Error code %d\n", err); 326 goto exit; 327 } 328 329 chip->hardware_running[is_capture] = 1; 330 331 if (chip->board_sample_rate != substream->runtime->rate) { 332 if (!err) 333 chip->board_sample_rate = substream->runtime->rate; 334 } 335 336 exit: 337 mutex_unlock(&chip->setup_mutex); 338 return err; 339 } 340 341 static int lx_pcm_hw_params(struct snd_pcm_substream *substream, 342 struct snd_pcm_hw_params *hw_params, int is_capture) 343 { 344 struct lx6464es *chip = snd_pcm_substream_chip(substream); 345 int err = 0; 346 347 dev_dbg(chip->card->dev, "->lx_pcm_hw_params\n"); 348 349 mutex_lock(&chip->setup_mutex); 350 351 /* set dma buffer */ 352 err = snd_pcm_lib_malloc_pages(substream, 353 params_buffer_bytes(hw_params)); 354 355 if (is_capture) 356 chip->capture_stream.stream = substream; 357 else 358 chip->playback_stream.stream = substream; 359 360 mutex_unlock(&chip->setup_mutex); 361 return err; 362 } 363 364 static int lx_pcm_hw_params_playback(struct snd_pcm_substream *substream, 365 struct snd_pcm_hw_params *hw_params) 366 { 367 return lx_pcm_hw_params(substream, hw_params, 0); 368 } 369 370 static int lx_pcm_hw_params_capture(struct snd_pcm_substream *substream, 371 struct snd_pcm_hw_params *hw_params) 372 { 373 return lx_pcm_hw_params(substream, hw_params, 1); 374 } 375 376 static int lx_pcm_hw_free(struct snd_pcm_substream *substream) 377 { 378 struct lx6464es *chip = snd_pcm_substream_chip(substream); 379 int err = 0; 380 int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 381 382 dev_dbg(chip->card->dev, "->lx_pcm_hw_free\n"); 383 mutex_lock(&chip->setup_mutex); 384 385 if (chip->hardware_running[is_capture]) { 386 err = lx_hardware_stop(chip, substream); 387 if (err < 0) { 388 dev_err(chip->card->dev, "failed to stop hardware. " 389 "Error code %d\n", err); 390 goto exit; 391 } 392 393 err = lx_hardware_close(chip, substream); 394 if (err < 0) { 395 dev_err(chip->card->dev, "failed to close hardware. " 396 "Error code %d\n", err); 397 goto exit; 398 } 399 400 chip->hardware_running[is_capture] = 0; 401 } 402 403 err = snd_pcm_lib_free_pages(substream); 404 405 if (is_capture) 406 chip->capture_stream.stream = NULL; 407 else 408 chip->playback_stream.stream = NULL; 409 410 exit: 411 mutex_unlock(&chip->setup_mutex); 412 return err; 413 } 414 415 static void lx_trigger_start(struct lx6464es *chip, struct lx_stream *lx_stream) 416 { 417 struct snd_pcm_substream *substream = lx_stream->stream; 418 const unsigned int is_capture = lx_stream->is_capture; 419 420 int err; 421 422 const u32 channels = substream->runtime->channels; 423 const u32 bytes_per_frame = channels * 3; 424 const u32 period_size = substream->runtime->period_size; 425 const u32 periods = substream->runtime->periods; 426 const u32 period_bytes = period_size * bytes_per_frame; 427 428 dma_addr_t buf = substream->dma_buffer.addr; 429 int i; 430 431 u32 needed, freed; 432 u32 size_array[5]; 433 434 for (i = 0; i != periods; ++i) { 435 u32 buffer_index = 0; 436 437 err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, 438 size_array); 439 dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", 440 needed, freed); 441 442 err = lx_buffer_give(chip, 0, is_capture, period_bytes, 443 lower_32_bits(buf), upper_32_bits(buf), 444 &buffer_index); 445 446 dev_dbg(chip->card->dev, "starting: buffer index %x on 0x%lx (%d bytes)\n", 447 buffer_index, (unsigned long)buf, period_bytes); 448 buf += period_bytes; 449 } 450 451 err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, size_array); 452 dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", needed, freed); 453 454 dev_dbg(chip->card->dev, "starting: starting stream\n"); 455 err = lx_stream_start(chip, 0, is_capture); 456 if (err < 0) 457 dev_err(chip->card->dev, "couldn't start stream\n"); 458 else 459 lx_stream->status = LX_STREAM_STATUS_RUNNING; 460 461 lx_stream->frame_pos = 0; 462 } 463 464 static void lx_trigger_stop(struct lx6464es *chip, struct lx_stream *lx_stream) 465 { 466 const unsigned int is_capture = lx_stream->is_capture; 467 int err; 468 469 dev_dbg(chip->card->dev, "stopping: stopping stream\n"); 470 err = lx_stream_stop(chip, 0, is_capture); 471 if (err < 0) 472 dev_err(chip->card->dev, "couldn't stop stream\n"); 473 else 474 lx_stream->status = LX_STREAM_STATUS_FREE; 475 476 } 477 478 static void lx_trigger_dispatch_stream(struct lx6464es *chip, 479 struct lx_stream *lx_stream) 480 { 481 switch (lx_stream->status) { 482 case LX_STREAM_STATUS_SCHEDULE_RUN: 483 lx_trigger_start(chip, lx_stream); 484 break; 485 486 case LX_STREAM_STATUS_SCHEDULE_STOP: 487 lx_trigger_stop(chip, lx_stream); 488 break; 489 490 default: 491 break; 492 } 493 } 494 495 static int lx_pcm_trigger_dispatch(struct lx6464es *chip, 496 struct lx_stream *lx_stream, int cmd) 497 { 498 int err = 0; 499 500 mutex_lock(&chip->lock); 501 switch (cmd) { 502 case SNDRV_PCM_TRIGGER_START: 503 lx_stream->status = LX_STREAM_STATUS_SCHEDULE_RUN; 504 break; 505 506 case SNDRV_PCM_TRIGGER_STOP: 507 lx_stream->status = LX_STREAM_STATUS_SCHEDULE_STOP; 508 break; 509 510 default: 511 err = -EINVAL; 512 goto exit; 513 } 514 515 lx_trigger_dispatch_stream(chip, &chip->capture_stream); 516 lx_trigger_dispatch_stream(chip, &chip->playback_stream); 517 518 exit: 519 mutex_unlock(&chip->lock); 520 return err; 521 } 522 523 524 static int lx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 525 { 526 struct lx6464es *chip = snd_pcm_substream_chip(substream); 527 const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 528 struct lx_stream *stream = is_capture ? &chip->capture_stream : 529 &chip->playback_stream; 530 531 dev_dbg(chip->card->dev, "->lx_pcm_trigger\n"); 532 533 return lx_pcm_trigger_dispatch(chip, stream, cmd); 534 } 535 536 static int snd_lx6464es_free(struct lx6464es *chip) 537 { 538 dev_dbg(chip->card->dev, "->snd_lx6464es_free\n"); 539 540 lx_irq_disable(chip); 541 542 if (chip->irq >= 0) 543 free_irq(chip->irq, chip); 544 545 iounmap(chip->port_dsp_bar); 546 ioport_unmap(chip->port_plx_remapped); 547 548 pci_release_regions(chip->pci); 549 pci_disable_device(chip->pci); 550 551 kfree(chip); 552 553 return 0; 554 } 555 556 static int snd_lx6464es_dev_free(struct snd_device *device) 557 { 558 return snd_lx6464es_free(device->device_data); 559 } 560 561 /* reset the dsp during initialization */ 562 static int lx_init_xilinx_reset(struct lx6464es *chip) 563 { 564 int i; 565 u32 plx_reg = lx_plx_reg_read(chip, ePLX_CHIPSC); 566 567 dev_dbg(chip->card->dev, "->lx_init_xilinx_reset\n"); 568 569 /* activate reset of xilinx */ 570 plx_reg &= ~CHIPSC_RESET_XILINX; 571 572 lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg); 573 msleep(1); 574 575 lx_plx_reg_write(chip, ePLX_MBOX3, 0); 576 msleep(1); 577 578 plx_reg |= CHIPSC_RESET_XILINX; 579 lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg); 580 581 /* deactivate reset of xilinx */ 582 for (i = 0; i != 100; ++i) { 583 u32 reg_mbox3; 584 msleep(10); 585 reg_mbox3 = lx_plx_reg_read(chip, ePLX_MBOX3); 586 if (reg_mbox3) { 587 dev_dbg(chip->card->dev, "xilinx reset done\n"); 588 dev_dbg(chip->card->dev, "xilinx took %d loops\n", i); 589 break; 590 } 591 } 592 593 /* todo: add some error handling? */ 594 595 /* clear mr */ 596 lx_dsp_reg_write(chip, eReg_CSM, 0); 597 598 /* le xilinx ES peut ne pas etre encore pret, on attend. */ 599 msleep(600); 600 601 return 0; 602 } 603 604 static int lx_init_xilinx_test(struct lx6464es *chip) 605 { 606 u32 reg; 607 608 dev_dbg(chip->card->dev, "->lx_init_xilinx_test\n"); 609 610 /* TEST if we have access to Xilinx/MicroBlaze */ 611 lx_dsp_reg_write(chip, eReg_CSM, 0); 612 613 reg = lx_dsp_reg_read(chip, eReg_CSM); 614 615 if (reg) { 616 dev_err(chip->card->dev, "Problem: Reg_CSM %x.\n", reg); 617 618 /* PCI9056_SPACE0_REMAP */ 619 lx_plx_reg_write(chip, ePLX_PCICR, 1); 620 621 reg = lx_dsp_reg_read(chip, eReg_CSM); 622 if (reg) { 623 dev_err(chip->card->dev, "Error: Reg_CSM %x.\n", reg); 624 return -EAGAIN; /* seems to be appropriate */ 625 } 626 } 627 628 dev_dbg(chip->card->dev, "Xilinx/MicroBlaze access test successful\n"); 629 630 return 0; 631 } 632 633 /* initialize ethersound */ 634 static int lx_init_ethersound_config(struct lx6464es *chip) 635 { 636 int i; 637 u32 orig_conf_es = lx_dsp_reg_read(chip, eReg_CONFES); 638 639 /* configure 64 io channels */ 640 u32 conf_es = (orig_conf_es & CONFES_READ_PART_MASK) | 641 (64 << IOCR_INPUTS_OFFSET) | 642 (64 << IOCR_OUTPUTS_OFFSET) | 643 (FREQ_RATIO_SINGLE_MODE << FREQ_RATIO_OFFSET); 644 645 dev_dbg(chip->card->dev, "->lx_init_ethersound\n"); 646 647 chip->freq_ratio = FREQ_RATIO_SINGLE_MODE; 648 649 /* 650 * write it to the card ! 651 * this actually kicks the ES xilinx, the first time since poweron. 652 * the MAC address in the Reg_ADMACESMSB Reg_ADMACESLSB registers 653 * is not ready before this is done, and the bit 2 in Reg_CSES is set. 654 * */ 655 lx_dsp_reg_write(chip, eReg_CONFES, conf_es); 656 657 for (i = 0; i != 1000; ++i) { 658 if (lx_dsp_reg_read(chip, eReg_CSES) & 4) { 659 dev_dbg(chip->card->dev, "ethersound initialized after %dms\n", 660 i); 661 goto ethersound_initialized; 662 } 663 msleep(1); 664 } 665 dev_warn(chip->card->dev, 666 "ethersound could not be initialized after %dms\n", i); 667 return -ETIMEDOUT; 668 669 ethersound_initialized: 670 dev_dbg(chip->card->dev, "ethersound initialized\n"); 671 return 0; 672 } 673 674 static int lx_init_get_version_features(struct lx6464es *chip) 675 { 676 u32 dsp_version; 677 678 int err; 679 680 dev_dbg(chip->card->dev, "->lx_init_get_version_features\n"); 681 682 err = lx_dsp_get_version(chip, &dsp_version); 683 684 if (err == 0) { 685 u32 freq; 686 687 dev_info(chip->card->dev, "DSP version: V%02d.%02d #%d\n", 688 (dsp_version>>16) & 0xff, (dsp_version>>8) & 0xff, 689 dsp_version & 0xff); 690 691 /* later: what firmware version do we expect? */ 692 693 /* retrieve Play/Rec features */ 694 /* done here because we may have to handle alternate 695 * DSP files. */ 696 /* later */ 697 698 /* init the EtherSound sample rate */ 699 err = lx_dsp_get_clock_frequency(chip, &freq); 700 if (err == 0) 701 chip->board_sample_rate = freq; 702 dev_dbg(chip->card->dev, "actual clock frequency %d\n", freq); 703 } else { 704 dev_err(chip->card->dev, "DSP corrupted \n"); 705 err = -EAGAIN; 706 } 707 708 return err; 709 } 710 711 static int lx_set_granularity(struct lx6464es *chip, u32 gran) 712 { 713 int err = 0; 714 u32 snapped_gran = MICROBLAZE_IBL_MIN; 715 716 dev_dbg(chip->card->dev, "->lx_set_granularity\n"); 717 718 /* blocksize is a power of 2 */ 719 while ((snapped_gran < gran) && 720 (snapped_gran < MICROBLAZE_IBL_MAX)) { 721 snapped_gran *= 2; 722 } 723 724 if (snapped_gran == chip->pcm_granularity) 725 return 0; 726 727 err = lx_dsp_set_granularity(chip, snapped_gran); 728 if (err < 0) { 729 dev_warn(chip->card->dev, "could not set granularity\n"); 730 err = -EAGAIN; 731 } 732 733 if (snapped_gran != gran) 734 dev_err(chip->card->dev, "snapped blocksize to %d\n", snapped_gran); 735 736 dev_dbg(chip->card->dev, "set blocksize on board %d\n", snapped_gran); 737 chip->pcm_granularity = snapped_gran; 738 739 return err; 740 } 741 742 /* initialize and test the xilinx dsp chip */ 743 static int lx_init_dsp(struct lx6464es *chip) 744 { 745 int err; 746 int i; 747 748 dev_dbg(chip->card->dev, "->lx_init_dsp\n"); 749 750 dev_dbg(chip->card->dev, "initialize board\n"); 751 err = lx_init_xilinx_reset(chip); 752 if (err) 753 return err; 754 755 dev_dbg(chip->card->dev, "testing board\n"); 756 err = lx_init_xilinx_test(chip); 757 if (err) 758 return err; 759 760 dev_dbg(chip->card->dev, "initialize ethersound configuration\n"); 761 err = lx_init_ethersound_config(chip); 762 if (err) 763 return err; 764 765 lx_irq_enable(chip); 766 767 /** \todo the mac address should be ready by not, but it isn't, 768 * so we wait for it */ 769 for (i = 0; i != 1000; ++i) { 770 err = lx_dsp_get_mac(chip); 771 if (err) 772 return err; 773 if (chip->mac_address[0] || chip->mac_address[1] || chip->mac_address[2] || 774 chip->mac_address[3] || chip->mac_address[4] || chip->mac_address[5]) 775 goto mac_ready; 776 msleep(1); 777 } 778 return -ETIMEDOUT; 779 780 mac_ready: 781 dev_dbg(chip->card->dev, "mac address ready read after: %dms\n", i); 782 dev_info(chip->card->dev, 783 "mac address: %02X.%02X.%02X.%02X.%02X.%02X\n", 784 chip->mac_address[0], chip->mac_address[1], chip->mac_address[2], 785 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 786 787 err = lx_init_get_version_features(chip); 788 if (err) 789 return err; 790 791 lx_set_granularity(chip, MICROBLAZE_IBL_DEFAULT); 792 793 chip->playback_mute = 0; 794 795 return err; 796 } 797 798 static const struct snd_pcm_ops lx_ops_playback = { 799 .open = lx_pcm_open, 800 .close = lx_pcm_close, 801 .ioctl = snd_pcm_lib_ioctl, 802 .prepare = lx_pcm_prepare, 803 .hw_params = lx_pcm_hw_params_playback, 804 .hw_free = lx_pcm_hw_free, 805 .trigger = lx_pcm_trigger, 806 .pointer = lx_pcm_stream_pointer, 807 }; 808 809 static const struct snd_pcm_ops lx_ops_capture = { 810 .open = lx_pcm_open, 811 .close = lx_pcm_close, 812 .ioctl = snd_pcm_lib_ioctl, 813 .prepare = lx_pcm_prepare, 814 .hw_params = lx_pcm_hw_params_capture, 815 .hw_free = lx_pcm_hw_free, 816 .trigger = lx_pcm_trigger, 817 .pointer = lx_pcm_stream_pointer, 818 }; 819 820 static int lx_pcm_create(struct lx6464es *chip) 821 { 822 int err; 823 struct snd_pcm *pcm; 824 825 u32 size = 64 * /* channels */ 826 3 * /* 24 bit samples */ 827 MAX_STREAM_BUFFER * /* periods */ 828 MICROBLAZE_IBL_MAX * /* frames per period */ 829 2; /* duplex */ 830 831 size = PAGE_ALIGN(size); 832 833 /* hardcoded device name & channel count */ 834 err = snd_pcm_new(chip->card, (char *)card_name, 0, 835 1, 1, &pcm); 836 if (err < 0) 837 return err; 838 839 pcm->private_data = chip; 840 841 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &lx_ops_playback); 842 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &lx_ops_capture); 843 844 pcm->info_flags = 0; 845 pcm->nonatomic = true; 846 strcpy(pcm->name, card_name); 847 848 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 849 &chip->pci->dev, 850 size, size); 851 852 chip->pcm = pcm; 853 chip->capture_stream.is_capture = 1; 854 855 return 0; 856 } 857 858 static int lx_control_playback_info(struct snd_kcontrol *kcontrol, 859 struct snd_ctl_elem_info *uinfo) 860 { 861 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 862 uinfo->count = 1; 863 uinfo->value.integer.min = 0; 864 uinfo->value.integer.max = 1; 865 return 0; 866 } 867 868 static int lx_control_playback_get(struct snd_kcontrol *kcontrol, 869 struct snd_ctl_elem_value *ucontrol) 870 { 871 struct lx6464es *chip = snd_kcontrol_chip(kcontrol); 872 ucontrol->value.integer.value[0] = chip->playback_mute; 873 return 0; 874 } 875 876 static int lx_control_playback_put(struct snd_kcontrol *kcontrol, 877 struct snd_ctl_elem_value *ucontrol) 878 { 879 struct lx6464es *chip = snd_kcontrol_chip(kcontrol); 880 int changed = 0; 881 int current_value = chip->playback_mute; 882 883 if (current_value != ucontrol->value.integer.value[0]) { 884 lx_level_unmute(chip, 0, !current_value); 885 chip->playback_mute = !current_value; 886 changed = 1; 887 } 888 return changed; 889 } 890 891 static const struct snd_kcontrol_new lx_control_playback_switch = { 892 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 893 .name = "PCM Playback Switch", 894 .index = 0, 895 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 896 .private_value = 0, 897 .info = lx_control_playback_info, 898 .get = lx_control_playback_get, 899 .put = lx_control_playback_put 900 }; 901 902 903 904 static void lx_proc_levels_read(struct snd_info_entry *entry, 905 struct snd_info_buffer *buffer) 906 { 907 u32 levels[64]; 908 int err; 909 int i, j; 910 struct lx6464es *chip = entry->private_data; 911 912 snd_iprintf(buffer, "capture levels:\n"); 913 err = lx_level_peaks(chip, 1, 64, levels); 914 if (err < 0) 915 return; 916 917 for (i = 0; i != 8; ++i) { 918 for (j = 0; j != 8; ++j) 919 snd_iprintf(buffer, "%08x ", levels[i*8+j]); 920 snd_iprintf(buffer, "\n"); 921 } 922 923 snd_iprintf(buffer, "\nplayback levels:\n"); 924 925 err = lx_level_peaks(chip, 0, 64, levels); 926 if (err < 0) 927 return; 928 929 for (i = 0; i != 8; ++i) { 930 for (j = 0; j != 8; ++j) 931 snd_iprintf(buffer, "%08x ", levels[i*8+j]); 932 snd_iprintf(buffer, "\n"); 933 } 934 935 snd_iprintf(buffer, "\n"); 936 } 937 938 static int lx_proc_create(struct snd_card *card, struct lx6464es *chip) 939 { 940 return snd_card_ro_proc_new(card, "levels", chip, lx_proc_levels_read); 941 } 942 943 944 static int snd_lx6464es_create(struct snd_card *card, 945 struct pci_dev *pci, 946 struct lx6464es **rchip) 947 { 948 struct lx6464es *chip; 949 int err; 950 951 static struct snd_device_ops ops = { 952 .dev_free = snd_lx6464es_dev_free, 953 }; 954 955 dev_dbg(card->dev, "->snd_lx6464es_create\n"); 956 957 *rchip = NULL; 958 959 /* enable PCI device */ 960 err = pci_enable_device(pci); 961 if (err < 0) 962 return err; 963 964 pci_set_master(pci); 965 966 /* check if we can restrict PCI DMA transfers to 32 bits */ 967 err = dma_set_mask(&pci->dev, DMA_BIT_MASK(32)); 968 if (err < 0) { 969 dev_err(card->dev, 970 "architecture does not support 32bit PCI busmaster DMA\n"); 971 pci_disable_device(pci); 972 return -ENXIO; 973 } 974 975 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 976 if (chip == NULL) { 977 err = -ENOMEM; 978 goto alloc_failed; 979 } 980 981 chip->card = card; 982 chip->pci = pci; 983 chip->irq = -1; 984 985 /* initialize synchronization structs */ 986 mutex_init(&chip->lock); 987 mutex_init(&chip->msg_lock); 988 mutex_init(&chip->setup_mutex); 989 990 /* request resources */ 991 err = pci_request_regions(pci, card_name); 992 if (err < 0) 993 goto request_regions_failed; 994 995 /* plx port */ 996 chip->port_plx = pci_resource_start(pci, 1); 997 chip->port_plx_remapped = ioport_map(chip->port_plx, 998 pci_resource_len(pci, 1)); 999 1000 /* dsp port */ 1001 chip->port_dsp_bar = pci_ioremap_bar(pci, 2); 1002 if (!chip->port_dsp_bar) { 1003 dev_err(card->dev, "cannot remap PCI memory region\n"); 1004 err = -ENOMEM; 1005 goto remap_pci_failed; 1006 } 1007 1008 err = request_threaded_irq(pci->irq, lx_interrupt, lx_threaded_irq, 1009 IRQF_SHARED, KBUILD_MODNAME, chip); 1010 if (err) { 1011 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1012 goto request_irq_failed; 1013 } 1014 chip->irq = pci->irq; 1015 1016 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); 1017 if (err < 0) 1018 goto device_new_failed; 1019 1020 err = lx_init_dsp(chip); 1021 if (err < 0) { 1022 dev_err(card->dev, "error during DSP initialization\n"); 1023 return err; 1024 } 1025 1026 err = lx_pcm_create(chip); 1027 if (err < 0) 1028 return err; 1029 1030 err = lx_proc_create(card, chip); 1031 if (err < 0) 1032 return err; 1033 1034 err = snd_ctl_add(card, snd_ctl_new1(&lx_control_playback_switch, 1035 chip)); 1036 if (err < 0) 1037 return err; 1038 1039 *rchip = chip; 1040 return 0; 1041 1042 device_new_failed: 1043 free_irq(pci->irq, chip); 1044 1045 request_irq_failed: 1046 iounmap(chip->port_dsp_bar); 1047 1048 remap_pci_failed: 1049 pci_release_regions(pci); 1050 1051 request_regions_failed: 1052 kfree(chip); 1053 1054 alloc_failed: 1055 pci_disable_device(pci); 1056 1057 return err; 1058 } 1059 1060 static int snd_lx6464es_probe(struct pci_dev *pci, 1061 const struct pci_device_id *pci_id) 1062 { 1063 static int dev; 1064 struct snd_card *card; 1065 struct lx6464es *chip; 1066 int err; 1067 1068 dev_dbg(&pci->dev, "->snd_lx6464es_probe\n"); 1069 1070 if (dev >= SNDRV_CARDS) 1071 return -ENODEV; 1072 if (!enable[dev]) { 1073 dev++; 1074 return -ENOENT; 1075 } 1076 1077 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, 1078 0, &card); 1079 if (err < 0) 1080 return err; 1081 1082 err = snd_lx6464es_create(card, pci, &chip); 1083 if (err < 0) { 1084 dev_err(card->dev, "error during snd_lx6464es_create\n"); 1085 goto out_free; 1086 } 1087 1088 strcpy(card->driver, "LX6464ES"); 1089 sprintf(card->id, "LX6464ES_%02X%02X%02X", 1090 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 1091 1092 sprintf(card->shortname, "LX6464ES %02X.%02X.%02X.%02X.%02X.%02X", 1093 chip->mac_address[0], chip->mac_address[1], chip->mac_address[2], 1094 chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]); 1095 1096 sprintf(card->longname, "%s at 0x%lx, 0x%p, irq %i", 1097 card->shortname, chip->port_plx, 1098 chip->port_dsp_bar, chip->irq); 1099 1100 err = snd_card_register(card); 1101 if (err < 0) 1102 goto out_free; 1103 1104 dev_dbg(chip->card->dev, "initialization successful\n"); 1105 pci_set_drvdata(pci, card); 1106 dev++; 1107 return 0; 1108 1109 out_free: 1110 snd_card_free(card); 1111 return err; 1112 1113 } 1114 1115 static void snd_lx6464es_remove(struct pci_dev *pci) 1116 { 1117 snd_card_free(pci_get_drvdata(pci)); 1118 } 1119 1120 1121 static struct pci_driver lx6464es_driver = { 1122 .name = KBUILD_MODNAME, 1123 .id_table = snd_lx6464es_ids, 1124 .probe = snd_lx6464es_probe, 1125 .remove = snd_lx6464es_remove, 1126 }; 1127 1128 module_pci_driver(lx6464es_driver); 1129