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 #include <sound/soc-link.h> 23 #include <linux/pm_runtime.h> 24 25 static int soc_compr_clean(struct snd_compr_stream *cstream, int rollback) 26 { 27 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 28 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 29 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 30 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 31 32 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 33 34 if (!rollback) 35 snd_soc_runtime_deactivate(rtd, stream); 36 37 snd_soc_dai_digital_mute(codec_dai, 1, stream); 38 39 if (!snd_soc_dai_active(cpu_dai)) 40 cpu_dai->rate = 0; 41 42 if (!snd_soc_dai_active(codec_dai)) 43 codec_dai->rate = 0; 44 45 snd_soc_link_compr_shutdown(cstream, rollback); 46 47 snd_soc_component_compr_free(cstream, rollback); 48 49 snd_soc_dai_compr_shutdown(cpu_dai, cstream, rollback); 50 51 if (!rollback) 52 snd_soc_dapm_stream_stop(rtd, stream); 53 54 mutex_unlock(&rtd->card->pcm_mutex); 55 56 snd_soc_pcm_component_pm_runtime_put(rtd, cstream, rollback); 57 58 return 0; 59 } 60 61 static int soc_compr_free(struct snd_compr_stream *cstream) 62 { 63 return soc_compr_clean(cstream, 0); 64 } 65 66 static int soc_compr_open(struct snd_compr_stream *cstream) 67 { 68 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 69 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 70 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 71 int ret; 72 73 ret = snd_soc_pcm_component_pm_runtime_get(rtd, cstream); 74 if (ret < 0) 75 goto err_no_lock; 76 77 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 78 79 ret = snd_soc_dai_compr_startup(cpu_dai, cstream); 80 if (ret < 0) 81 goto err; 82 83 ret = snd_soc_component_compr_open(cstream); 84 if (ret < 0) 85 goto err; 86 87 ret = snd_soc_link_compr_startup(cstream); 88 if (ret < 0) 89 goto err; 90 91 snd_soc_runtime_activate(rtd, stream); 92 err: 93 mutex_unlock(&rtd->card->pcm_mutex); 94 err_no_lock: 95 if (ret < 0) 96 soc_compr_clean(cstream, 1); 97 98 return ret; 99 } 100 101 static int soc_compr_open_fe(struct snd_compr_stream *cstream) 102 { 103 struct snd_soc_pcm_runtime *fe = cstream->private_data; 104 struct snd_pcm_substream *fe_substream = 105 fe->pcm->streams[cstream->direction].substream; 106 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); 107 struct snd_soc_dpcm *dpcm; 108 struct snd_soc_dapm_widget_list *list; 109 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 110 int ret; 111 112 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 113 fe->dpcm[stream].runtime = fe_substream->runtime; 114 115 ret = dpcm_path_get(fe, stream, &list); 116 if (ret < 0) 117 goto be_err; 118 119 /* calculate valid and active FE <-> BE dpcms */ 120 dpcm_process_paths(fe, stream, &list, 1); 121 fe->dpcm[stream].runtime = fe_substream->runtime; 122 123 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 124 125 ret = dpcm_be_dai_startup(fe, stream); 126 if (ret < 0) { 127 /* clean up all links */ 128 for_each_dpcm_be(fe, stream, dpcm) 129 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; 130 131 dpcm_be_disconnect(fe, stream); 132 fe->dpcm[stream].runtime = NULL; 133 goto out; 134 } 135 136 ret = snd_soc_dai_compr_startup(cpu_dai, cstream); 137 if (ret < 0) 138 goto out; 139 140 ret = snd_soc_component_compr_open(cstream); 141 if (ret < 0) 142 goto open_err; 143 144 ret = snd_soc_link_compr_startup(cstream); 145 if (ret < 0) 146 goto machine_err; 147 148 dpcm_clear_pending_state(fe, stream); 149 dpcm_path_put(&list); 150 151 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; 152 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 153 154 snd_soc_runtime_activate(fe, stream); 155 156 mutex_unlock(&fe->card->mutex); 157 158 return 0; 159 160 machine_err: 161 snd_soc_component_compr_free(cstream, 1); 162 open_err: 163 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 1); 164 out: 165 dpcm_path_put(&list); 166 be_err: 167 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 168 mutex_unlock(&fe->card->mutex); 169 return ret; 170 } 171 172 static int soc_compr_free_fe(struct snd_compr_stream *cstream) 173 { 174 struct snd_soc_pcm_runtime *fe = cstream->private_data; 175 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); 176 struct snd_soc_dpcm *dpcm; 177 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 178 int ret; 179 180 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 181 182 snd_soc_runtime_deactivate(fe, stream); 183 184 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 185 186 ret = dpcm_be_dai_hw_free(fe, stream); 187 if (ret < 0) 188 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret); 189 190 dpcm_be_dai_shutdown(fe, stream); 191 192 /* mark FE's links ready to prune */ 193 for_each_dpcm_be(fe, stream, dpcm) 194 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; 195 196 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); 197 198 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; 199 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 200 201 dpcm_be_disconnect(fe, stream); 202 203 fe->dpcm[stream].runtime = NULL; 204 205 snd_soc_link_compr_shutdown(cstream, 0); 206 207 snd_soc_component_compr_free(cstream, 0); 208 209 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0); 210 211 mutex_unlock(&fe->card->mutex); 212 return 0; 213 } 214 215 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) 216 { 217 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 218 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 219 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 220 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 221 int ret; 222 223 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 224 225 ret = snd_soc_component_compr_trigger(cstream, cmd); 226 if (ret < 0) 227 goto out; 228 229 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd); 230 if (ret < 0) 231 goto out; 232 233 switch (cmd) { 234 case SNDRV_PCM_TRIGGER_START: 235 snd_soc_dai_digital_mute(codec_dai, 0, stream); 236 break; 237 case SNDRV_PCM_TRIGGER_STOP: 238 snd_soc_dai_digital_mute(codec_dai, 1, stream); 239 break; 240 } 241 242 out: 243 mutex_unlock(&rtd->card->pcm_mutex); 244 return ret; 245 } 246 247 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) 248 { 249 struct snd_soc_pcm_runtime *fe = cstream->private_data; 250 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); 251 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 252 int ret; 253 254 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN || 255 cmd == SND_COMPR_TRIGGER_DRAIN) 256 return snd_soc_component_compr_trigger(cstream, cmd); 257 258 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 259 260 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd); 261 if (ret < 0) 262 goto out; 263 264 ret = snd_soc_component_compr_trigger(cstream, cmd); 265 if (ret < 0) 266 goto out; 267 268 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 269 270 ret = dpcm_be_dai_trigger(fe, stream, cmd); 271 272 switch (cmd) { 273 case SNDRV_PCM_TRIGGER_START: 274 case SNDRV_PCM_TRIGGER_RESUME: 275 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 276 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; 277 break; 278 case SNDRV_PCM_TRIGGER_STOP: 279 case SNDRV_PCM_TRIGGER_SUSPEND: 280 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; 281 break; 282 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 283 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; 284 break; 285 } 286 287 out: 288 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 289 mutex_unlock(&fe->card->mutex); 290 return ret; 291 } 292 293 static int soc_compr_set_params(struct snd_compr_stream *cstream, 294 struct snd_compr_params *params) 295 { 296 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 297 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 298 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 299 int ret; 300 301 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 302 303 /* 304 * First we call set_params for the CPU DAI, then the component 305 * driver this should configure the SoC side. If the machine has 306 * compressed ops then we call that as well. The expectation is 307 * that these callbacks will configure everything for this compress 308 * path, like configuring a PCM port for a CODEC. 309 */ 310 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params); 311 if (ret < 0) 312 goto err; 313 314 ret = snd_soc_component_compr_set_params(cstream, params); 315 if (ret < 0) 316 goto err; 317 318 ret = snd_soc_link_compr_set_params(cstream); 319 if (ret < 0) 320 goto err; 321 322 snd_soc_dapm_stream_event(rtd, stream, SND_SOC_DAPM_STREAM_START); 323 324 /* cancel any delayed stream shutdown that is pending */ 325 rtd->pop_wait = 0; 326 mutex_unlock(&rtd->card->pcm_mutex); 327 328 cancel_delayed_work_sync(&rtd->delayed_work); 329 330 return 0; 331 332 err: 333 mutex_unlock(&rtd->card->pcm_mutex); 334 return ret; 335 } 336 337 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream, 338 struct snd_compr_params *params) 339 { 340 struct snd_soc_pcm_runtime *fe = cstream->private_data; 341 struct snd_pcm_substream *fe_substream = 342 fe->pcm->streams[cstream->direction].substream; 343 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); 344 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */ 345 int ret; 346 347 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 348 349 /* 350 * Create an empty hw_params for the BE as the machine driver must 351 * fix this up to match DSP decoder and ASRC configuration. 352 * I.e. machine driver fixup for compressed BE is mandatory. 353 */ 354 memset(&fe->dpcm[fe_substream->stream].hw_params, 0, 355 sizeof(struct snd_pcm_hw_params)); 356 357 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 358 359 ret = dpcm_be_dai_hw_params(fe, stream); 360 if (ret < 0) 361 goto out; 362 363 ret = dpcm_be_dai_prepare(fe, stream); 364 if (ret < 0) 365 goto out; 366 367 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params); 368 if (ret < 0) 369 goto out; 370 371 ret = snd_soc_component_compr_set_params(cstream, params); 372 if (ret < 0) 373 goto out; 374 375 ret = snd_soc_link_compr_set_params(cstream); 376 if (ret < 0) 377 goto out; 378 379 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); 380 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; 381 382 out: 383 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 384 mutex_unlock(&fe->card->mutex); 385 return ret; 386 } 387 388 static int soc_compr_get_params(struct snd_compr_stream *cstream, 389 struct snd_codec *params) 390 { 391 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 392 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 393 int ret = 0; 394 395 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 396 397 ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params); 398 if (ret < 0) 399 goto err; 400 401 ret = snd_soc_component_compr_get_params(cstream, params); 402 err: 403 mutex_unlock(&rtd->card->pcm_mutex); 404 return ret; 405 } 406 407 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) 408 { 409 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 410 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 411 int ret; 412 413 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 414 415 ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes); 416 if (ret < 0) 417 goto err; 418 419 ret = snd_soc_component_compr_ack(cstream, bytes); 420 err: 421 mutex_unlock(&rtd->card->pcm_mutex); 422 return ret; 423 } 424 425 static int soc_compr_pointer(struct snd_compr_stream *cstream, 426 struct snd_compr_tstamp *tstamp) 427 { 428 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 429 int ret; 430 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 431 432 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); 433 434 ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp); 435 if (ret < 0) 436 goto out; 437 438 ret = snd_soc_component_compr_pointer(cstream, tstamp); 439 out: 440 mutex_unlock(&rtd->card->pcm_mutex); 441 return ret; 442 } 443 444 static int soc_compr_set_metadata(struct snd_compr_stream *cstream, 445 struct snd_compr_metadata *metadata) 446 { 447 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 448 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 449 int ret; 450 451 ret = snd_soc_dai_compr_set_metadata(cpu_dai, cstream, metadata); 452 if (ret < 0) 453 return ret; 454 455 return snd_soc_component_compr_set_metadata(cstream, metadata); 456 } 457 458 static int soc_compr_get_metadata(struct snd_compr_stream *cstream, 459 struct snd_compr_metadata *metadata) 460 { 461 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 462 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 463 int ret; 464 465 ret = snd_soc_dai_compr_get_metadata(cpu_dai, cstream, metadata); 466 if (ret < 0) 467 return ret; 468 469 return snd_soc_component_compr_get_metadata(cstream, metadata); 470 } 471 472 /* ASoC Compress operations */ 473 static struct snd_compr_ops soc_compr_ops = { 474 .open = soc_compr_open, 475 .free = soc_compr_free, 476 .set_params = soc_compr_set_params, 477 .set_metadata = soc_compr_set_metadata, 478 .get_metadata = soc_compr_get_metadata, 479 .get_params = soc_compr_get_params, 480 .trigger = soc_compr_trigger, 481 .pointer = soc_compr_pointer, 482 .ack = soc_compr_ack, 483 .get_caps = snd_soc_component_compr_get_caps, 484 .get_codec_caps = snd_soc_component_compr_get_codec_caps, 485 }; 486 487 /* ASoC Dynamic Compress operations */ 488 static struct snd_compr_ops soc_compr_dyn_ops = { 489 .open = soc_compr_open_fe, 490 .free = soc_compr_free_fe, 491 .set_params = soc_compr_set_params_fe, 492 .get_params = soc_compr_get_params, 493 .set_metadata = soc_compr_set_metadata, 494 .get_metadata = soc_compr_get_metadata, 495 .trigger = soc_compr_trigger_fe, 496 .pointer = soc_compr_pointer, 497 .ack = soc_compr_ack, 498 .get_caps = snd_soc_component_compr_get_caps, 499 .get_codec_caps = snd_soc_component_compr_get_codec_caps, 500 }; 501 502 /** 503 * snd_soc_new_compress - create a new compress. 504 * 505 * @rtd: The runtime for which we will create compress 506 * @num: the device index number (zero based - shared with normal PCMs) 507 * 508 * Return: 0 for success, else error. 509 */ 510 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) 511 { 512 struct snd_soc_component *component; 513 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 514 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 515 struct snd_compr *compr; 516 struct snd_pcm *be_pcm; 517 char new_name[64]; 518 int ret = 0, direction = 0; 519 int playback = 0, capture = 0; 520 int i; 521 522 /* 523 * make sure these are same value, 524 * and then use these as equally 525 */ 526 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_PLAYBACK != (int)SND_COMPRESS_PLAYBACK); 527 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_CAPTURE != (int)SND_COMPRESS_CAPTURE); 528 529 if (rtd->num_cpus > 1 || 530 rtd->num_codecs > 1) { 531 dev_err(rtd->card->dev, 532 "Compress ASoC: Multi CPU/Codec not supported\n"); 533 return -EINVAL; 534 } 535 536 /* check client and interface hw capabilities */ 537 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && 538 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK)) 539 playback = 1; 540 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && 541 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE)) 542 capture = 1; 543 544 /* 545 * Compress devices are unidirectional so only one of the directions 546 * should be set, check for that (xor) 547 */ 548 if (playback + capture != 1) { 549 dev_err(rtd->card->dev, 550 "Compress ASoC: Invalid direction for P %d, C %d\n", 551 playback, capture); 552 return -EINVAL; 553 } 554 555 if (playback) 556 direction = SND_COMPRESS_PLAYBACK; 557 else 558 direction = SND_COMPRESS_CAPTURE; 559 560 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL); 561 if (!compr) 562 return -ENOMEM; 563 564 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops), 565 GFP_KERNEL); 566 if (!compr->ops) 567 return -ENOMEM; 568 569 if (rtd->dai_link->dynamic) { 570 snprintf(new_name, sizeof(new_name), "(%s)", 571 rtd->dai_link->stream_name); 572 573 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, 574 rtd->dai_link->dpcm_playback, 575 rtd->dai_link->dpcm_capture, &be_pcm); 576 if (ret < 0) { 577 dev_err(rtd->card->dev, 578 "Compress ASoC: can't create compressed for %s: %d\n", 579 rtd->dai_link->name, ret); 580 return ret; 581 } 582 583 rtd->pcm = be_pcm; 584 rtd->fe_compr = 1; 585 if (rtd->dai_link->dpcm_playback) 586 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; 587 else if (rtd->dai_link->dpcm_capture) 588 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; 589 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops)); 590 } else { 591 snprintf(new_name, sizeof(new_name), "%s %s-%d", 592 rtd->dai_link->stream_name, codec_dai->name, num); 593 594 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); 595 } 596 597 for_each_rtd_components(rtd, i, component) { 598 if (!component->driver->compress_ops || 599 !component->driver->compress_ops->copy) 600 continue; 601 602 compr->ops->copy = snd_soc_component_compr_copy; 603 break; 604 } 605 606 mutex_init(&compr->lock); 607 ret = snd_compress_new(rtd->card->snd_card, num, direction, 608 new_name, compr); 609 if (ret < 0) { 610 component = asoc_rtd_to_codec(rtd, 0)->component; 611 dev_err(component->dev, 612 "Compress ASoC: can't create compress for codec %s: %d\n", 613 component->name, ret); 614 return ret; 615 } 616 617 /* DAPM dai link stream work */ 618 rtd->close_delayed_work_func = snd_soc_close_delayed_work; 619 620 rtd->compr = compr; 621 compr->private_data = rtd; 622 623 dev_dbg(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n", 624 codec_dai->name, cpu_dai->name); 625 626 return 0; 627 } 628 EXPORT_SYMBOL_GPL(snd_soc_new_compress); 629