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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 | // SPDX-License-Identifier: GPL-2.0-only /***************************************************************************** * * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and * Jean-Christian Hassler <jhassler@free.fr> * * This file is part of the Audiowerk2 ALSA driver * *****************************************************************************/ #include <linux/init.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/module.h> #include <sound/core.h> #include <sound/initval.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/control.h> #include "saa7146.h" #include "aw2-saa7146.h" MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, " "Jean-Christian Hassler <jhassler@free.fr>"); MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver"); MODULE_LICENSE("GPL"); /********************************* * DEFINES ********************************/ #define CTL_ROUTE_ANALOG 0 #define CTL_ROUTE_DIGITAL 1 /********************************* * TYPEDEFS ********************************/ /* hardware definition */ static const struct snd_pcm_hardware snd_aw2_playback_hw = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), .formats = SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_44100, .rate_min = 44100, .rate_max = 44100, .channels_min = 2, .channels_max = 4, .buffer_bytes_max = 32768, .period_bytes_min = 4096, .period_bytes_max = 32768, .periods_min = 1, .periods_max = 1024, }; static const struct snd_pcm_hardware snd_aw2_capture_hw = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), .formats = SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_44100, .rate_min = 44100, .rate_max = 44100, .channels_min = 2, .channels_max = 2, .buffer_bytes_max = 32768, .period_bytes_min = 4096, .period_bytes_max = 32768, .periods_min = 1, .periods_max = 1024, }; struct aw2_pcm_device { struct snd_pcm *pcm; unsigned int stream_number; struct aw2 *chip; }; struct aw2 { struct snd_aw2_saa7146 saa7146; struct pci_dev *pci; int irq; spinlock_t reg_lock; struct mutex mtx; unsigned long iobase_phys; void __iomem *iobase_virt; struct snd_card *card; struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK]; struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE]; }; /********************************* * FUNCTION DECLARATIONS ********************************/ static int snd_aw2_create(struct snd_card *card, struct pci_dev *pci); static int snd_aw2_probe(struct pci_dev *pci, const struct pci_device_id *pci_id); static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream); static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream); static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream); static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream); static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream); static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream); static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream, int cmd); static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream, int cmd); static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream *substream); static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream *substream); static int snd_aw2_new_pcm(struct aw2 *chip); static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo); static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); /********************************* * VARIABLES ********************************/ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard."); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard."); static const struct pci_device_id snd_aw2_ids[] = { {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0, 0, 0, 0}, {0} }; MODULE_DEVICE_TABLE(pci, snd_aw2_ids); /* pci_driver definition */ static struct pci_driver aw2_driver = { .name = KBUILD_MODNAME, .id_table = snd_aw2_ids, .probe = snd_aw2_probe, }; module_pci_driver(aw2_driver); /* operators for playback PCM alsa interface */ static const struct snd_pcm_ops snd_aw2_playback_ops = { .open = snd_aw2_pcm_playback_open, .close = snd_aw2_pcm_playback_close, .prepare = snd_aw2_pcm_prepare_playback, .trigger = snd_aw2_pcm_trigger_playback, .pointer = snd_aw2_pcm_pointer_playback, }; /* operators for capture PCM alsa interface */ static const struct snd_pcm_ops snd_aw2_capture_ops = { .open = snd_aw2_pcm_capture_open, .close = snd_aw2_pcm_capture_close, .prepare = snd_aw2_pcm_prepare_capture, .trigger = snd_aw2_pcm_trigger_capture, .pointer = snd_aw2_pcm_pointer_capture, }; static const struct snd_kcontrol_new aw2_control = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "PCM Capture Route", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 0xffff, .info = snd_aw2_control_switch_capture_info, .get = snd_aw2_control_switch_capture_get, .put = snd_aw2_control_switch_capture_put }; /********************************* * FUNCTION IMPLEMENTATIONS ********************************/ /* component-destructor */ static void snd_aw2_free(struct snd_card *card) { struct aw2 *chip = card->private_data; /* Free hardware */ snd_aw2_saa7146_free(&chip->saa7146); } /* chip-specific constructor */ static int snd_aw2_create(struct snd_card *card, struct pci_dev *pci) { struct aw2 *chip = card->private_data; int err; /* initialize the PCI entry */ err = pcim_enable_device(pci); if (err < 0) return err; pci_set_master(pci); /* check PCI availability (32bit DMA) */ if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) { dev_err(card->dev, "Impossible to set 32bit mask DMA\n"); return -ENXIO; } /* initialize the stuff */ chip->card = card; chip->pci = pci; chip->irq = -1; /* (1) PCI resource allocation */ err = pcim_iomap_regions(pci, 1 << 0, "Audiowerk2"); if (err < 0) return err; chip->iobase_phys = pci_resource_start(pci, 0); chip->iobase_virt = pcim_iomap_table(pci)[0]; /* (2) initialization of the chip hardware */ snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt); if (devm_request_irq(&pci->dev, pci->irq, snd_aw2_saa7146_interrupt, IRQF_SHARED, KBUILD_MODNAME, chip)) { dev_err(card->dev, "Cannot grab irq %d\n", pci->irq); return -EBUSY; } chip->irq = pci->irq; card->sync_irq = chip->irq; card->private_free = snd_aw2_free; dev_info(card->dev, "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n"); return 0; } /* constructor */ static int snd_aw2_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { static int dev; struct snd_card *card; struct aw2 *chip; int err; /* (1) Continue if device is not enabled, else inc dev */ if (dev >= SNDRV_CARDS) return -ENODEV; if (!enable[dev]) { dev++; return -ENOENT; } /* (2) Create card instance */ err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, sizeof(*chip), &card); if (err < 0) return err; chip = card->private_data; /* (3) Create main component */ err = snd_aw2_create(card, pci); if (err < 0) goto error; /* initialize mutex */ mutex_init(&chip->mtx); /* init spinlock */ spin_lock_init(&chip->reg_lock); /* (4) Define driver ID and name string */ strcpy(card->driver, "aw2"); strcpy(card->shortname, "Audiowerk2"); sprintf(card->longname, "%s with SAA7146 irq %i", card->shortname, chip->irq); /* (5) Create other components */ snd_aw2_new_pcm(chip); /* (6) Register card instance */ err = snd_card_register(card); if (err < 0) goto error; /* (7) Set PCI driver data */ pci_set_drvdata(pci, card); dev++; return 0; error: snd_card_free(card); return err; } /* open callback */ static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; dev_dbg(substream->pcm->card->dev, "Playback_open\n"); runtime->hw = snd_aw2_playback_hw; return 0; } /* close callback */ static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream) { return 0; } static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; dev_dbg(substream->pcm->card->dev, "Capture_open\n"); runtime->hw = snd_aw2_capture_hw; return 0; } /* close callback */ static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream) { /* TODO: something to do ? */ return 0; } /* prepare callback for playback */ static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream) { struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); struct aw2 *chip = pcm_device->chip; struct snd_pcm_runtime *runtime = substream->runtime; unsigned long period_size, buffer_size; mutex_lock(&chip->mtx); period_size = snd_pcm_lib_period_bytes(substream); buffer_size = snd_pcm_lib_buffer_bytes(substream); snd_aw2_saa7146_pcm_init_playback(&chip->saa7146, pcm_device->stream_number, runtime->dma_addr, period_size, buffer_size); /* Define Interrupt callback */ snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number, (snd_aw2_saa7146_it_cb) snd_pcm_period_elapsed, (void *)substream); mutex_unlock(&chip->mtx); return 0; } /* prepare callback for capture */ static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream) { struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); struct aw2 *chip = pcm_device->chip; struct snd_pcm_runtime *runtime = substream->runtime; unsigned long period_size, buffer_size; mutex_lock(&chip->mtx); period_size = snd_pcm_lib_period_bytes(substream); buffer_size = snd_pcm_lib_buffer_bytes(substream); snd_aw2_saa7146_pcm_init_capture(&chip->saa7146, pcm_device->stream_number, runtime->dma_addr, period_size, buffer_size); /* Define Interrupt callback */ snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number, (snd_aw2_saa7146_it_cb) snd_pcm_period_elapsed, (void *)substream); mutex_unlock(&chip->mtx); return 0; } /* playback trigger callback */ static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream, int cmd) { int status = 0; struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); struct aw2 *chip = pcm_device->chip; spin_lock(&chip->reg_lock); switch (cmd) { case SNDRV_PCM_TRIGGER_START: snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146, pcm_device-> stream_number); break; case SNDRV_PCM_TRIGGER_STOP: snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146, pcm_device-> stream_number); break; default: status = -EINVAL; } spin_unlock(&chip->reg_lock); return status; } /* capture trigger callback */ static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream, int cmd) { int status = 0; struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); struct aw2 *chip = pcm_device->chip; spin_lock(&chip->reg_lock); switch (cmd) { case SNDRV_PCM_TRIGGER_START: snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146, pcm_device-> stream_number); break; case SNDRV_PCM_TRIGGER_STOP: snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146, pcm_device-> stream_number); break; default: status = -EINVAL; } spin_unlock(&chip->reg_lock); return status; } /* playback pointer callback */ static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream *substream) { struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); struct aw2 *chip = pcm_device->chip; unsigned int current_ptr; /* get the current hardware pointer */ struct snd_pcm_runtime *runtime = substream->runtime; current_ptr = snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146, pcm_device->stream_number, runtime->dma_area, runtime->buffer_size); return bytes_to_frames(substream->runtime, current_ptr); } /* capture pointer callback */ static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream *substream) { struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream); struct aw2 *chip = pcm_device->chip; unsigned int current_ptr; /* get the current hardware pointer */ struct snd_pcm_runtime *runtime = substream->runtime; current_ptr = snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146, pcm_device->stream_number, runtime->dma_area, runtime->buffer_size); return bytes_to_frames(substream->runtime, current_ptr); } /* create a pcm device */ static int snd_aw2_new_pcm(struct aw2 *chip) { struct snd_pcm *pcm_playback_ana; struct snd_pcm *pcm_playback_num; struct snd_pcm *pcm_capture; struct aw2_pcm_device *pcm_device; int err = 0; /* Create new Alsa PCM device */ err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0, &pcm_playback_ana); if (err < 0) { dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err); return err; } /* Creation ok */ pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA]; /* Set PCM device name */ strcpy(pcm_playback_ana->name, "Analog playback"); /* Associate private data to PCM device */ pcm_playback_ana->private_data = pcm_device; /* set operators of PCM device */ snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK, &snd_aw2_playback_ops); /* store PCM device */ pcm_device->pcm = pcm_playback_ana; /* give base chip pointer to our internal pcm device structure */ pcm_device->chip = chip; /* Give stream number to PCM device */ pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA; /* pre-allocation of buffers */ /* Preallocate continuous pages. */ snd_pcm_set_managed_buffer_all(pcm_playback_ana, SNDRV_DMA_TYPE_DEV, &chip->pci->dev, 64 * 1024, 64 * 1024); err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0, &pcm_playback_num); if (err < 0) { dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err); return err; } /* Creation ok */ pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG]; /* Set PCM device name */ strcpy(pcm_playback_num->name, "Digital playback"); /* Associate private data to PCM device */ pcm_playback_num->private_data = pcm_device; /* set operators of PCM device */ snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK, &snd_aw2_playback_ops); /* store PCM device */ pcm_device->pcm = pcm_playback_num; /* give base chip pointer to our internal pcm device structure */ pcm_device->chip = chip; /* Give stream number to PCM device */ pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG; /* pre-allocation of buffers */ /* Preallocate continuous pages. */ snd_pcm_set_managed_buffer_all(pcm_playback_num, SNDRV_DMA_TYPE_DEV, &chip->pci->dev, 64 * 1024, 64 * 1024); err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1, &pcm_capture); if (err < 0) { dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err); return err; } /* Creation ok */ pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA]; /* Set PCM device name */ strcpy(pcm_capture->name, "Capture"); /* Associate private data to PCM device */ pcm_capture->private_data = pcm_device; /* set operators of PCM device */ snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE, &snd_aw2_capture_ops); /* store PCM device */ pcm_device->pcm = pcm_capture; /* give base chip pointer to our internal pcm device structure */ pcm_device->chip = chip; /* Give stream number to PCM device */ pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA; /* pre-allocation of buffers */ /* Preallocate continuous pages. */ snd_pcm_set_managed_buffer_all(pcm_capture, SNDRV_DMA_TYPE_DEV, &chip->pci->dev, 64 * 1024, 64 * 1024); /* Create control */ err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip)); if (err < 0) { dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err); return err; } return 0; } static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { static const char * const texts[2] = { "Analog", "Digital" }; return snd_ctl_enum_info(uinfo, 1, 2, texts); } static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct aw2 *chip = snd_kcontrol_chip(kcontrol); if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146)) ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL; else ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG; return 0; } static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct aw2 *chip = snd_kcontrol_chip(kcontrol); int changed = 0; int is_disgital = snd_aw2_saa7146_is_using_digital_input(&chip->saa7146); if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL) && !is_disgital) || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG) && is_disgital)) { snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital); changed = 1; } return changed; } |