1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // soc-compress.c -- ALSA SoC Compress 4 // 5 // Copyright (C) 2012 Intel Corp. 6 // 7 // Authors: Namarta Kohli <namartax.kohli@intel.com> 8 // Ramesh Babu K V <ramesh.babu@linux.intel.com> 9 // Vinod Koul <vinod.koul@linux.intel.com> 10 11 #include <linux/kernel.h> 12 #include <linux/init.h> 13 #include <linux/delay.h> 14 #include <linux/slab.h> 15 #include <linux/workqueue.h> 16 #include <sound/core.h> 17 #include <sound/compress_params.h> 18 #include <sound/compress_driver.h> 19 #include <sound/soc.h> 20 #include <sound/initval.h> 21 #include <sound/soc-dpcm.h> 22 23 static int soc_compr_components_open(struct snd_compr_stream *cstream, 24 struct snd_soc_component **last) 25 { 26 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 27 struct snd_soc_component *component; 28 struct snd_soc_rtdcom_list *rtdcom; 29 int ret; 30 31 for_each_rtdcom(rtd, rtdcom) { 32 component = rtdcom->component; 33 34 if (!component->driver->compr_ops || 35 !component->driver->compr_ops->open) 36 continue; 37 38 ret = component->driver->compr_ops->open(cstream); 39 if (ret < 0) { 40 dev_err(component->dev, 41 "Compress ASoC: can't open platform %s: %d\n", 42 component->name, ret); 43 44 *last = component; 45 return ret; 46 } 47 } 48 49 *last = NULL; 50 return 0; 51 } 52 53 static int soc_compr_components_free(struct snd_compr_stream *cstream, 54 struct snd_soc_component *last) 55 { 56 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 57 struct snd_soc_component *component; 58 struct snd_soc_rtdcom_list *rtdcom; 59 60 for_each_rtdcom(rtd, rtdcom) { 61 component = rtdcom->component; 62 63 if (component == last) 64 break; 65 66 if (!component->driver->compr_ops || 67 !component->driver->compr_ops->free) 68 continue; 69 70 component->driver->compr_ops->free(cstream); 71 } 72 73 return 0; 74 } 75 76 static int soc_compr_open(struct snd_compr_stream *cstream) 77 { 78 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 79 struct snd_soc_component *component; 80 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 81 int ret; 82 83 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 84 85 if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { 86 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); 87 if (ret < 0) { 88 dev_err(cpu_dai->dev, 89 "Compress ASoC: can't open interface %s: %d\n", 90 cpu_dai->name, ret); 91 goto out; 92 } 93 } 94 95 ret = soc_compr_components_open(cstream, &component); 96 if (ret < 0) 97 goto machine_err; 98 99 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { 100 ret = rtd->dai_link->compr_ops->startup(cstream); 101 if (ret < 0) { 102 dev_err(rtd->dev, 103 "Compress ASoC: %s startup failed: %d\n", 104 rtd->dai_link->name, ret); 105 goto machine_err; 106 } 107 } 108 109 snd_soc_runtime_activate(rtd, cstream->direction); 110 111 mutex_unlock(&rtd->pcm_mutex); 112 113 return 0; 114 115 machine_err: 116 soc_compr_components_free(cstream, component); 117 118 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) 119 cpu_dai->driver->cops->shutdown(cstream, cpu_dai); 120 out: 121 mutex_unlock(&rtd->pcm_mutex); 122 return ret; 123 } 124 125 static int soc_compr_open_fe(struct snd_compr_stream *cstream) 126 { 127 struct snd_soc_pcm_runtime *fe = cstream->private_data; 128 struct snd_pcm_substream *fe_substream = 129 fe->pcm->streams[cstream->direction].substream; 130 struct snd_soc_component *component; 131 struct snd_soc_dai *cpu_dai = fe->cpu_dai; 132 struct snd_soc_dpcm *dpcm; 133 struct snd_soc_dapm_widget_list *list; 134 int stream; 135 int ret; 136 137 if (cstream->direction == SND_COMPRESS_PLAYBACK) 138 stream = SNDRV_PCM_STREAM_PLAYBACK; 139 else 140 stream = SNDRV_PCM_STREAM_CAPTURE; 141 142 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 143 fe->dpcm[stream].runtime = fe_substream->runtime; 144 145 ret = dpcm_path_get(fe, stream, &list); 146 if (ret < 0) 147 goto be_err; 148 else if (ret == 0) 149 dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n", 150 fe->dai_link->name, stream ? "capture" : "playback"); 151 /* calculate valid and active FE <-> BE dpcms */ 152 dpcm_process_paths(fe, stream, &list, 1); 153 fe->dpcm[stream].runtime = fe_substream->runtime; 154 155 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 156 157 ret = dpcm_be_dai_startup(fe, stream); 158 if (ret < 0) { 159 /* clean up all links */ 160 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) 161 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; 162 163 dpcm_be_disconnect(fe, stream); 164 fe->dpcm[stream].runtime = NULL; 165 goto out; 166 } 167 168 if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { 169 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); 170 if (ret < 0) { 171 dev_err(cpu_dai->dev, 172 "Compress ASoC: can't open interface %s: %d\n", 173 cpu_dai->name, ret); 174 goto out; 175 } 176 } 177 178 ret = soc_compr_components_open(cstream, &component); 179 if (ret < 0) 180 goto open_err; 181 182 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { 183 ret = fe->dai_link->compr_ops->startup(cstream); 184 if (ret < 0) { 185 pr_err("Compress ASoC: %s startup failed: %d\n", 186 fe->dai_link->name, ret); 187 goto machine_err; 188 } 189 } 190 191 dpcm_clear_pending_state(fe, stream); 192 dpcm_path_put(&list); 193 194 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; 195 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 196 197 snd_soc_runtime_activate(fe, stream); 198 199 mutex_unlock(&fe->card->mutex); 200 201 return 0; 202 203 machine_err: 204 soc_compr_components_free(cstream, component); 205 open_err: 206 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) 207 cpu_dai->driver->cops->shutdown(cstream, cpu_dai); 208 out: 209 dpcm_path_put(&list); 210 be_err: 211 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 212 mutex_unlock(&fe->card->mutex); 213 return ret; 214 } 215 216 /* 217 * Power down the audio subsystem pmdown_time msecs after close is called. 218 * This is to ensure there are no pops or clicks in between any music tracks 219 * due to DAPM power cycling. 220 */ 221 static void close_delayed_work(struct work_struct *work) 222 { 223 struct snd_soc_pcm_runtime *rtd = 224 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); 225 struct snd_soc_dai *codec_dai = rtd->codec_dai; 226 227 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 228 229 dev_dbg(rtd->dev, 230 "Compress ASoC: pop wq checking: %s status: %s waiting: %s\n", 231 codec_dai->driver->playback.stream_name, 232 codec_dai->playback_active ? "active" : "inactive", 233 rtd->pop_wait ? "yes" : "no"); 234 235 /* are we waiting on this codec DAI stream */ 236 if (rtd->pop_wait == 1) { 237 rtd->pop_wait = 0; 238 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, 239 SND_SOC_DAPM_STREAM_STOP); 240 } 241 242 mutex_unlock(&rtd->pcm_mutex); 243 } 244 245 static int soc_compr_free(struct snd_compr_stream *cstream) 246 { 247 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 248 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 249 struct snd_soc_dai *codec_dai = rtd->codec_dai; 250 int stream; 251 252 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 253 254 if (cstream->direction == SND_COMPRESS_PLAYBACK) 255 stream = SNDRV_PCM_STREAM_PLAYBACK; 256 else 257 stream = SNDRV_PCM_STREAM_CAPTURE; 258 259 snd_soc_runtime_deactivate(rtd, stream); 260 261 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); 262 263 if (!cpu_dai->active) 264 cpu_dai->rate = 0; 265 266 if (!codec_dai->active) 267 codec_dai->rate = 0; 268 269 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) 270 rtd->dai_link->compr_ops->shutdown(cstream); 271 272 soc_compr_components_free(cstream, NULL); 273 274 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) 275 cpu_dai->driver->cops->shutdown(cstream, cpu_dai); 276 277 if (cstream->direction == SND_COMPRESS_PLAYBACK) { 278 if (snd_soc_runtime_ignore_pmdown_time(rtd)) { 279 snd_soc_dapm_stream_event(rtd, 280 SNDRV_PCM_STREAM_PLAYBACK, 281 SND_SOC_DAPM_STREAM_STOP); 282 } else { 283 rtd->pop_wait = 1; 284 queue_delayed_work(system_power_efficient_wq, 285 &rtd->delayed_work, 286 msecs_to_jiffies(rtd->pmdown_time)); 287 } 288 } else { 289 /* capture streams can be powered down now */ 290 snd_soc_dapm_stream_event(rtd, 291 SNDRV_PCM_STREAM_CAPTURE, 292 SND_SOC_DAPM_STREAM_STOP); 293 } 294 295 mutex_unlock(&rtd->pcm_mutex); 296 return 0; 297 } 298 299 static int soc_compr_free_fe(struct snd_compr_stream *cstream) 300 { 301 struct snd_soc_pcm_runtime *fe = cstream->private_data; 302 struct snd_soc_dai *cpu_dai = fe->cpu_dai; 303 struct snd_soc_dpcm *dpcm; 304 int stream, ret; 305 306 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 307 308 if (cstream->direction == SND_COMPRESS_PLAYBACK) 309 stream = SNDRV_PCM_STREAM_PLAYBACK; 310 else 311 stream = SNDRV_PCM_STREAM_CAPTURE; 312 313 snd_soc_runtime_deactivate(fe, stream); 314 315 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 316 317 ret = dpcm_be_dai_hw_free(fe, stream); 318 if (ret < 0) 319 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret); 320 321 ret = dpcm_be_dai_shutdown(fe, stream); 322 323 /* mark FE's links ready to prune */ 324 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) 325 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; 326 327 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); 328 329 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; 330 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 331 332 dpcm_be_disconnect(fe, stream); 333 334 fe->dpcm[stream].runtime = NULL; 335 336 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) 337 fe->dai_link->compr_ops->shutdown(cstream); 338 339 soc_compr_components_free(cstream, NULL); 340 341 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) 342 cpu_dai->driver->cops->shutdown(cstream, cpu_dai); 343 344 mutex_unlock(&fe->card->mutex); 345 return 0; 346 } 347 348 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) 349 { 350 351 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 352 struct snd_soc_component *component; 353 struct snd_soc_rtdcom_list *rtdcom; 354 struct snd_soc_dai *codec_dai = rtd->codec_dai; 355 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 356 int ret = 0, __ret; 357 358 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 359 360 for_each_rtdcom(rtd, rtdcom) { 361 component = rtdcom->component; 362 363 if (!component->driver->compr_ops || 364 !component->driver->compr_ops->trigger) 365 continue; 366 367 __ret = component->driver->compr_ops->trigger(cstream, cmd); 368 if (__ret < 0) 369 ret = __ret; 370 } 371 if (ret < 0) 372 goto out; 373 374 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) 375 cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai); 376 377 switch (cmd) { 378 case SNDRV_PCM_TRIGGER_START: 379 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction); 380 break; 381 case SNDRV_PCM_TRIGGER_STOP: 382 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); 383 break; 384 } 385 386 out: 387 mutex_unlock(&rtd->pcm_mutex); 388 return ret; 389 } 390 391 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) 392 { 393 struct snd_soc_pcm_runtime *fe = cstream->private_data; 394 struct snd_soc_component *component; 395 struct snd_soc_rtdcom_list *rtdcom; 396 struct snd_soc_dai *cpu_dai = fe->cpu_dai; 397 int ret = 0, __ret, stream; 398 399 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN || 400 cmd == SND_COMPR_TRIGGER_DRAIN) { 401 402 for_each_rtdcom(fe, rtdcom) { 403 component = rtdcom->component; 404 405 if (!component->driver->compr_ops || 406 !component->driver->compr_ops->trigger) 407 continue; 408 409 __ret = component->driver->compr_ops->trigger(cstream, cmd); 410 if (__ret < 0) 411 ret = __ret; 412 } 413 return ret; 414 } 415 416 if (cstream->direction == SND_COMPRESS_PLAYBACK) 417 stream = SNDRV_PCM_STREAM_PLAYBACK; 418 else 419 stream = SNDRV_PCM_STREAM_CAPTURE; 420 421 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 422 423 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) { 424 ret = cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai); 425 if (ret < 0) 426 goto out; 427 } 428 429 for_each_rtdcom(fe, rtdcom) { 430 component = rtdcom->component; 431 432 if (!component->driver->compr_ops || 433 !component->driver->compr_ops->trigger) 434 continue; 435 436 __ret = component->driver->compr_ops->trigger(cstream, cmd); 437 if (__ret < 0) 438 ret = __ret; 439 } 440 if (ret < 0) 441 goto out; 442 443 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 444 445 ret = dpcm_be_dai_trigger(fe, stream, cmd); 446 447 switch (cmd) { 448 case SNDRV_PCM_TRIGGER_START: 449 case SNDRV_PCM_TRIGGER_RESUME: 450 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 451 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; 452 break; 453 case SNDRV_PCM_TRIGGER_STOP: 454 case SNDRV_PCM_TRIGGER_SUSPEND: 455 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; 456 break; 457 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 458 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; 459 break; 460 } 461 462 out: 463 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 464 mutex_unlock(&fe->card->mutex); 465 return ret; 466 } 467 468 static int soc_compr_set_params(struct snd_compr_stream *cstream, 469 struct snd_compr_params *params) 470 { 471 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 472 struct snd_soc_component *component; 473 struct snd_soc_rtdcom_list *rtdcom; 474 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 475 int ret = 0, __ret; 476 477 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 478 479 /* 480 * First we call set_params for the CPU DAI, then the component 481 * driver this should configure the SoC side. If the machine has 482 * compressed ops then we call that as well. The expectation is 483 * that these callbacks will configure everything for this compress 484 * path, like configuring a PCM port for a CODEC. 485 */ 486 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) { 487 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai); 488 if (ret < 0) 489 goto err; 490 } 491 492 for_each_rtdcom(rtd, rtdcom) { 493 component = rtdcom->component; 494 495 if (!component->driver->compr_ops || 496 !component->driver->compr_ops->set_params) 497 continue; 498 499 __ret = component->driver->compr_ops->set_params(cstream, params); 500 if (__ret < 0) 501 ret = __ret; 502 } 503 if (ret < 0) 504 goto err; 505 506 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) { 507 ret = rtd->dai_link->compr_ops->set_params(cstream); 508 if (ret < 0) 509 goto err; 510 } 511 512 if (cstream->direction == SND_COMPRESS_PLAYBACK) 513 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, 514 SND_SOC_DAPM_STREAM_START); 515 else 516 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, 517 SND_SOC_DAPM_STREAM_START); 518 519 /* cancel any delayed stream shutdown that is pending */ 520 rtd->pop_wait = 0; 521 mutex_unlock(&rtd->pcm_mutex); 522 523 cancel_delayed_work_sync(&rtd->delayed_work); 524 525 return ret; 526 527 err: 528 mutex_unlock(&rtd->pcm_mutex); 529 return ret; 530 } 531 532 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream, 533 struct snd_compr_params *params) 534 { 535 struct snd_soc_pcm_runtime *fe = cstream->private_data; 536 struct snd_pcm_substream *fe_substream = 537 fe->pcm->streams[cstream->direction].substream; 538 struct snd_soc_component *component; 539 struct snd_soc_rtdcom_list *rtdcom; 540 struct snd_soc_dai *cpu_dai = fe->cpu_dai; 541 int ret = 0, __ret, stream; 542 543 if (cstream->direction == SND_COMPRESS_PLAYBACK) 544 stream = SNDRV_PCM_STREAM_PLAYBACK; 545 else 546 stream = SNDRV_PCM_STREAM_CAPTURE; 547 548 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 549 550 /* 551 * Create an empty hw_params for the BE as the machine driver must 552 * fix this up to match DSP decoder and ASRC configuration. 553 * I.e. machine driver fixup for compressed BE is mandatory. 554 */ 555 memset(&fe->dpcm[fe_substream->stream].hw_params, 0, 556 sizeof(struct snd_pcm_hw_params)); 557 558 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 559 560 ret = dpcm_be_dai_hw_params(fe, stream); 561 if (ret < 0) 562 goto out; 563 564 ret = dpcm_be_dai_prepare(fe, stream); 565 if (ret < 0) 566 goto out; 567 568 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) { 569 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai); 570 if (ret < 0) 571 goto out; 572 } 573 574 for_each_rtdcom(fe, rtdcom) { 575 component = rtdcom->component; 576 577 if (!component->driver->compr_ops || 578 !component->driver->compr_ops->set_params) 579 continue; 580 581 __ret = component->driver->compr_ops->set_params(cstream, params); 582 if (__ret < 0) 583 ret = __ret; 584 } 585 if (ret < 0) 586 goto out; 587 588 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) { 589 ret = fe->dai_link->compr_ops->set_params(cstream); 590 if (ret < 0) 591 goto out; 592 } 593 594 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); 595 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; 596 597 out: 598 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 599 mutex_unlock(&fe->card->mutex); 600 return ret; 601 } 602 603 static int soc_compr_get_params(struct snd_compr_stream *cstream, 604 struct snd_codec *params) 605 { 606 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 607 struct snd_soc_component *component; 608 struct snd_soc_rtdcom_list *rtdcom; 609 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 610 int ret = 0, __ret; 611 612 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 613 614 if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) { 615 ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai); 616 if (ret < 0) 617 goto err; 618 } 619 620 for_each_rtdcom(rtd, rtdcom) { 621 component = rtdcom->component; 622 623 if (!component->driver->compr_ops || 624 !component->driver->compr_ops->get_params) 625 continue; 626 627 __ret = component->driver->compr_ops->get_params(cstream, params); 628 if (__ret < 0) 629 ret = __ret; 630 } 631 632 err: 633 mutex_unlock(&rtd->pcm_mutex); 634 return ret; 635 } 636 637 static int soc_compr_get_caps(struct snd_compr_stream *cstream, 638 struct snd_compr_caps *caps) 639 { 640 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 641 struct snd_soc_component *component; 642 struct snd_soc_rtdcom_list *rtdcom; 643 int ret = 0, __ret; 644 645 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 646 647 for_each_rtdcom(rtd, rtdcom) { 648 component = rtdcom->component; 649 650 if (!component->driver->compr_ops || 651 !component->driver->compr_ops->get_caps) 652 continue; 653 654 __ret = component->driver->compr_ops->get_caps(cstream, caps); 655 if (__ret < 0) 656 ret = __ret; 657 } 658 659 mutex_unlock(&rtd->pcm_mutex); 660 return ret; 661 } 662 663 static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, 664 struct snd_compr_codec_caps *codec) 665 { 666 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 667 struct snd_soc_component *component; 668 struct snd_soc_rtdcom_list *rtdcom; 669 int ret = 0, __ret; 670 671 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 672 673 for_each_rtdcom(rtd, rtdcom) { 674 component = rtdcom->component; 675 676 if (!component->driver->compr_ops || 677 !component->driver->compr_ops->get_codec_caps) 678 continue; 679 680 __ret = component->driver->compr_ops->get_codec_caps(cstream, codec); 681 if (__ret < 0) 682 ret = __ret; 683 } 684 685 mutex_unlock(&rtd->pcm_mutex); 686 return ret; 687 } 688 689 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) 690 { 691 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 692 struct snd_soc_component *component; 693 struct snd_soc_rtdcom_list *rtdcom; 694 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 695 int ret = 0, __ret; 696 697 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 698 699 if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) { 700 ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai); 701 if (ret < 0) 702 goto err; 703 } 704 705 for_each_rtdcom(rtd, rtdcom) { 706 component = rtdcom->component; 707 708 if (!component->driver->compr_ops || 709 !component->driver->compr_ops->ack) 710 continue; 711 712 __ret = component->driver->compr_ops->ack(cstream, bytes); 713 if (__ret < 0) 714 ret = __ret; 715 } 716 717 err: 718 mutex_unlock(&rtd->pcm_mutex); 719 return ret; 720 } 721 722 static int soc_compr_pointer(struct snd_compr_stream *cstream, 723 struct snd_compr_tstamp *tstamp) 724 { 725 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 726 struct snd_soc_component *component; 727 struct snd_soc_rtdcom_list *rtdcom; 728 int ret = 0, __ret; 729 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 730 731 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 732 733 if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer) 734 cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai); 735 736 for_each_rtdcom(rtd, rtdcom) { 737 component = rtdcom->component; 738 739 if (!component->driver->compr_ops || 740 !component->driver->compr_ops->pointer) 741 continue; 742 743 __ret = component->driver->compr_ops->pointer(cstream, tstamp); 744 if (__ret < 0) 745 ret = __ret; 746 } 747 748 mutex_unlock(&rtd->pcm_mutex); 749 return ret; 750 } 751 752 static int soc_compr_copy(struct snd_compr_stream *cstream, 753 char __user *buf, size_t count) 754 { 755 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 756 struct snd_soc_component *component; 757 struct snd_soc_rtdcom_list *rtdcom; 758 int ret = 0; 759 760 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 761 762 for_each_rtdcom(rtd, rtdcom) { 763 component = rtdcom->component; 764 765 if (!component->driver->compr_ops || 766 !component->driver->compr_ops->copy) 767 continue; 768 769 ret = component->driver->compr_ops->copy(cstream, buf, count); 770 break; 771 } 772 773 mutex_unlock(&rtd->pcm_mutex); 774 return ret; 775 } 776 777 static int soc_compr_set_metadata(struct snd_compr_stream *cstream, 778 struct snd_compr_metadata *metadata) 779 { 780 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 781 struct snd_soc_component *component; 782 struct snd_soc_rtdcom_list *rtdcom; 783 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 784 int ret = 0, __ret; 785 786 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) { 787 ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai); 788 if (ret < 0) 789 return ret; 790 } 791 792 for_each_rtdcom(rtd, rtdcom) { 793 component = rtdcom->component; 794 795 if (!component->driver->compr_ops || 796 !component->driver->compr_ops->set_metadata) 797 continue; 798 799 __ret = component->driver->compr_ops->set_metadata(cstream, metadata); 800 if (__ret < 0) 801 ret = __ret; 802 } 803 804 return ret; 805 } 806 807 static int soc_compr_get_metadata(struct snd_compr_stream *cstream, 808 struct snd_compr_metadata *metadata) 809 { 810 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 811 struct snd_soc_component *component; 812 struct snd_soc_rtdcom_list *rtdcom; 813 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 814 int ret = 0, __ret; 815 816 if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) { 817 ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai); 818 if (ret < 0) 819 return ret; 820 } 821 822 for_each_rtdcom(rtd, rtdcom) { 823 component = rtdcom->component; 824 825 if (!component->driver->compr_ops || 826 !component->driver->compr_ops->get_metadata) 827 continue; 828 829 __ret = component->driver->compr_ops->get_metadata(cstream, metadata); 830 if (__ret < 0) 831 ret = __ret; 832 } 833 834 return ret; 835 } 836 837 /* ASoC Compress operations */ 838 static struct snd_compr_ops soc_compr_ops = { 839 .open = soc_compr_open, 840 .free = soc_compr_free, 841 .set_params = soc_compr_set_params, 842 .set_metadata = soc_compr_set_metadata, 843 .get_metadata = soc_compr_get_metadata, 844 .get_params = soc_compr_get_params, 845 .trigger = soc_compr_trigger, 846 .pointer = soc_compr_pointer, 847 .ack = soc_compr_ack, 848 .get_caps = soc_compr_get_caps, 849 .get_codec_caps = soc_compr_get_codec_caps 850 }; 851 852 /* ASoC Dynamic Compress operations */ 853 static struct snd_compr_ops soc_compr_dyn_ops = { 854 .open = soc_compr_open_fe, 855 .free = soc_compr_free_fe, 856 .set_params = soc_compr_set_params_fe, 857 .get_params = soc_compr_get_params, 858 .set_metadata = soc_compr_set_metadata, 859 .get_metadata = soc_compr_get_metadata, 860 .trigger = soc_compr_trigger_fe, 861 .pointer = soc_compr_pointer, 862 .ack = soc_compr_ack, 863 .get_caps = soc_compr_get_caps, 864 .get_codec_caps = soc_compr_get_codec_caps 865 }; 866 867 /** 868 * snd_soc_new_compress - create a new compress. 869 * 870 * @rtd: The runtime for which we will create compress 871 * @num: the device index number (zero based - shared with normal PCMs) 872 * 873 * Return: 0 for success, else error. 874 */ 875 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) 876 { 877 struct snd_soc_component *component; 878 struct snd_soc_rtdcom_list *rtdcom; 879 struct snd_soc_dai *codec_dai = rtd->codec_dai; 880 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 881 struct snd_compr *compr; 882 struct snd_pcm *be_pcm; 883 char new_name[64]; 884 int ret = 0, direction = 0; 885 int playback = 0, capture = 0; 886 887 if (rtd->num_codecs > 1) { 888 dev_err(rtd->card->dev, 889 "Compress ASoC: Multicodec not supported\n"); 890 return -EINVAL; 891 } 892 893 /* check client and interface hw capabilities */ 894 if (codec_dai->driver->playback.channels_min) 895 playback = 1; 896 if (codec_dai->driver->capture.channels_min) 897 capture = 1; 898 899 capture = capture && cpu_dai->driver->capture.channels_min; 900 playback = playback && cpu_dai->driver->playback.channels_min; 901 902 /* 903 * Compress devices are unidirectional so only one of the directions 904 * should be set, check for that (xor) 905 */ 906 if (playback + capture != 1) { 907 dev_err(rtd->card->dev, 908 "Compress ASoC: Invalid direction for P %d, C %d\n", 909 playback, capture); 910 return -EINVAL; 911 } 912 913 if (playback) 914 direction = SND_COMPRESS_PLAYBACK; 915 else 916 direction = SND_COMPRESS_CAPTURE; 917 918 compr = kzalloc(sizeof(*compr), GFP_KERNEL); 919 if (!compr) 920 return -ENOMEM; 921 922 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops), 923 GFP_KERNEL); 924 if (!compr->ops) { 925 ret = -ENOMEM; 926 goto compr_err; 927 } 928 929 if (rtd->dai_link->dynamic) { 930 snprintf(new_name, sizeof(new_name), "(%s)", 931 rtd->dai_link->stream_name); 932 933 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, 934 rtd->dai_link->dpcm_playback, 935 rtd->dai_link->dpcm_capture, &be_pcm); 936 if (ret < 0) { 937 dev_err(rtd->card->dev, 938 "Compress ASoC: can't create compressed for %s: %d\n", 939 rtd->dai_link->name, ret); 940 goto compr_err; 941 } 942 943 rtd->pcm = be_pcm; 944 rtd->fe_compr = 1; 945 if (rtd->dai_link->dpcm_playback) 946 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; 947 else if (rtd->dai_link->dpcm_capture) 948 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; 949 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops)); 950 } else { 951 snprintf(new_name, sizeof(new_name), "%s %s-%d", 952 rtd->dai_link->stream_name, codec_dai->name, num); 953 954 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); 955 } 956 957 for_each_rtdcom(rtd, rtdcom) { 958 component = rtdcom->component; 959 960 if (!component->driver->compr_ops || 961 !component->driver->compr_ops->copy) 962 continue; 963 964 compr->ops->copy = soc_compr_copy; 965 break; 966 } 967 968 mutex_init(&compr->lock); 969 ret = snd_compress_new(rtd->card->snd_card, num, direction, 970 new_name, compr); 971 if (ret < 0) { 972 component = rtd->codec_dai->component; 973 dev_err(component->dev, 974 "Compress ASoC: can't create compress for codec %s: %d\n", 975 component->name, ret); 976 goto compr_err; 977 } 978 979 /* DAPM dai link stream work */ 980 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); 981 982 rtd->compr = compr; 983 compr->private_data = rtd; 984 985 dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n", 986 codec_dai->name, cpu_dai->name); 987 return ret; 988 989 compr_err: 990 kfree(compr); 991 return ret; 992 } 993 EXPORT_SYMBOL_GPL(snd_soc_new_compress); 994