1 /* 2 * soc-compress.c -- ALSA SoC Compress 3 * 4 * Copyright (C) 2012 Intel Corp. 5 * 6 * Authors: Namarta Kohli <namartax.kohli@intel.com> 7 * Ramesh Babu K V <ramesh.babu@linux.intel.com> 8 * Vinod Koul <vinod.koul@linux.intel.com> 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/init.h> 19 #include <linux/delay.h> 20 #include <linux/slab.h> 21 #include <linux/workqueue.h> 22 #include <sound/core.h> 23 #include <sound/compress_params.h> 24 #include <sound/compress_driver.h> 25 #include <sound/soc.h> 26 #include <sound/initval.h> 27 #include <sound/soc-dpcm.h> 28 29 static int soc_compr_open(struct snd_compr_stream *cstream) 30 { 31 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 32 struct snd_soc_platform *platform = rtd->platform; 33 int ret = 0; 34 35 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 36 37 if (platform->driver->compr_ops && platform->driver->compr_ops->open) { 38 ret = platform->driver->compr_ops->open(cstream); 39 if (ret < 0) { 40 pr_err("compress asoc: can't open platform %s\n", 41 platform->component.name); 42 goto out; 43 } 44 } 45 46 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { 47 ret = rtd->dai_link->compr_ops->startup(cstream); 48 if (ret < 0) { 49 pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name); 50 goto machine_err; 51 } 52 } 53 54 snd_soc_runtime_activate(rtd, cstream->direction); 55 56 mutex_unlock(&rtd->pcm_mutex); 57 58 return 0; 59 60 machine_err: 61 if (platform->driver->compr_ops && platform->driver->compr_ops->free) 62 platform->driver->compr_ops->free(cstream); 63 out: 64 mutex_unlock(&rtd->pcm_mutex); 65 return ret; 66 } 67 68 static int soc_compr_open_fe(struct snd_compr_stream *cstream) 69 { 70 struct snd_soc_pcm_runtime *fe = cstream->private_data; 71 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream; 72 struct snd_soc_platform *platform = fe->platform; 73 struct snd_soc_dpcm *dpcm; 74 struct snd_soc_dapm_widget_list *list; 75 int stream; 76 int ret = 0; 77 78 if (cstream->direction == SND_COMPRESS_PLAYBACK) 79 stream = SNDRV_PCM_STREAM_PLAYBACK; 80 else 81 stream = SNDRV_PCM_STREAM_CAPTURE; 82 83 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 84 85 if (platform->driver->compr_ops && platform->driver->compr_ops->open) { 86 ret = platform->driver->compr_ops->open(cstream); 87 if (ret < 0) { 88 pr_err("compress asoc: can't open platform %s\n", 89 platform->component.name); 90 goto out; 91 } 92 } 93 94 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { 95 ret = fe->dai_link->compr_ops->startup(cstream); 96 if (ret < 0) { 97 pr_err("compress asoc: %s startup failed\n", fe->dai_link->name); 98 goto machine_err; 99 } 100 } 101 102 fe->dpcm[stream].runtime = fe_substream->runtime; 103 104 ret = dpcm_path_get(fe, stream, &list); 105 if (ret < 0) 106 goto fe_err; 107 else if (ret == 0) 108 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", 109 fe->dai_link->name, stream ? "capture" : "playback"); 110 111 /* calculate valid and active FE <-> BE dpcms */ 112 dpcm_process_paths(fe, stream, &list, 1); 113 114 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 115 116 ret = dpcm_be_dai_startup(fe, stream); 117 if (ret < 0) { 118 /* clean up all links */ 119 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) 120 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; 121 122 dpcm_be_disconnect(fe, stream); 123 fe->dpcm[stream].runtime = NULL; 124 goto fe_err; 125 } 126 127 dpcm_clear_pending_state(fe, stream); 128 dpcm_path_put(&list); 129 130 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; 131 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 132 133 snd_soc_runtime_activate(fe, stream); 134 135 mutex_unlock(&fe->card->mutex); 136 137 return 0; 138 139 fe_err: 140 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) 141 fe->dai_link->compr_ops->shutdown(cstream); 142 machine_err: 143 if (platform->driver->compr_ops && platform->driver->compr_ops->free) 144 platform->driver->compr_ops->free(cstream); 145 out: 146 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 147 mutex_unlock(&fe->card->mutex); 148 return ret; 149 } 150 151 /* 152 * Power down the audio subsystem pmdown_time msecs after close is called. 153 * This is to ensure there are no pops or clicks in between any music tracks 154 * due to DAPM power cycling. 155 */ 156 static void close_delayed_work(struct work_struct *work) 157 { 158 struct snd_soc_pcm_runtime *rtd = 159 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); 160 struct snd_soc_dai *codec_dai = rtd->codec_dai; 161 162 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 163 164 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", 165 codec_dai->driver->playback.stream_name, 166 codec_dai->playback_active ? "active" : "inactive", 167 rtd->pop_wait ? "yes" : "no"); 168 169 /* are we waiting on this codec DAI stream */ 170 if (rtd->pop_wait == 1) { 171 rtd->pop_wait = 0; 172 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, 173 SND_SOC_DAPM_STREAM_STOP); 174 } 175 176 mutex_unlock(&rtd->pcm_mutex); 177 } 178 179 static int soc_compr_free(struct snd_compr_stream *cstream) 180 { 181 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 182 struct snd_soc_platform *platform = rtd->platform; 183 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 184 struct snd_soc_dai *codec_dai = rtd->codec_dai; 185 int stream; 186 187 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 188 189 if (cstream->direction == SND_COMPRESS_PLAYBACK) 190 stream = SNDRV_PCM_STREAM_PLAYBACK; 191 else 192 stream = SNDRV_PCM_STREAM_CAPTURE; 193 194 snd_soc_runtime_deactivate(rtd, stream); 195 196 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); 197 198 if (!cpu_dai->active) 199 cpu_dai->rate = 0; 200 201 if (!codec_dai->active) 202 codec_dai->rate = 0; 203 204 205 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) 206 rtd->dai_link->compr_ops->shutdown(cstream); 207 208 if (platform->driver->compr_ops && platform->driver->compr_ops->free) 209 platform->driver->compr_ops->free(cstream); 210 211 if (cstream->direction == SND_COMPRESS_PLAYBACK) { 212 if (snd_soc_runtime_ignore_pmdown_time(rtd)) { 213 snd_soc_dapm_stream_event(rtd, 214 SNDRV_PCM_STREAM_PLAYBACK, 215 SND_SOC_DAPM_STREAM_STOP); 216 } else { 217 rtd->pop_wait = 1; 218 queue_delayed_work(system_power_efficient_wq, 219 &rtd->delayed_work, 220 msecs_to_jiffies(rtd->pmdown_time)); 221 } 222 } else { 223 /* capture streams can be powered down now */ 224 snd_soc_dapm_stream_event(rtd, 225 SNDRV_PCM_STREAM_CAPTURE, 226 SND_SOC_DAPM_STREAM_STOP); 227 } 228 229 mutex_unlock(&rtd->pcm_mutex); 230 return 0; 231 } 232 233 static int soc_compr_free_fe(struct snd_compr_stream *cstream) 234 { 235 struct snd_soc_pcm_runtime *fe = cstream->private_data; 236 struct snd_soc_platform *platform = fe->platform; 237 struct snd_soc_dpcm *dpcm; 238 int stream, ret; 239 240 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 241 242 if (cstream->direction == SND_COMPRESS_PLAYBACK) 243 stream = SNDRV_PCM_STREAM_PLAYBACK; 244 else 245 stream = SNDRV_PCM_STREAM_CAPTURE; 246 247 snd_soc_runtime_deactivate(fe, stream); 248 249 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 250 251 ret = dpcm_be_dai_hw_free(fe, stream); 252 if (ret < 0) 253 dev_err(fe->dev, "compressed hw_free failed %d\n", ret); 254 255 ret = dpcm_be_dai_shutdown(fe, stream); 256 257 /* mark FE's links ready to prune */ 258 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) 259 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; 260 261 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); 262 263 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; 264 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 265 266 dpcm_be_disconnect(fe, stream); 267 268 fe->dpcm[stream].runtime = NULL; 269 270 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) 271 fe->dai_link->compr_ops->shutdown(cstream); 272 273 if (platform->driver->compr_ops && platform->driver->compr_ops->free) 274 platform->driver->compr_ops->free(cstream); 275 276 mutex_unlock(&fe->card->mutex); 277 return 0; 278 } 279 280 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) 281 { 282 283 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 284 struct snd_soc_platform *platform = rtd->platform; 285 struct snd_soc_dai *codec_dai = rtd->codec_dai; 286 int ret = 0; 287 288 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 289 290 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { 291 ret = platform->driver->compr_ops->trigger(cstream, cmd); 292 if (ret < 0) 293 goto out; 294 } 295 296 switch (cmd) { 297 case SNDRV_PCM_TRIGGER_START: 298 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction); 299 break; 300 case SNDRV_PCM_TRIGGER_STOP: 301 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); 302 break; 303 } 304 305 out: 306 mutex_unlock(&rtd->pcm_mutex); 307 return ret; 308 } 309 310 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) 311 { 312 struct snd_soc_pcm_runtime *fe = cstream->private_data; 313 struct snd_soc_platform *platform = fe->platform; 314 int ret = 0, stream; 315 316 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN || 317 cmd == SND_COMPR_TRIGGER_DRAIN) { 318 319 if (platform->driver->compr_ops && 320 platform->driver->compr_ops->trigger) 321 return platform->driver->compr_ops->trigger(cstream, 322 cmd); 323 } 324 325 if (cstream->direction == SND_COMPRESS_PLAYBACK) 326 stream = SNDRV_PCM_STREAM_PLAYBACK; 327 else 328 stream = SNDRV_PCM_STREAM_CAPTURE; 329 330 331 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 332 333 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { 334 ret = platform->driver->compr_ops->trigger(cstream, cmd); 335 if (ret < 0) 336 goto out; 337 } 338 339 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 340 341 ret = dpcm_be_dai_trigger(fe, stream, cmd); 342 343 switch (cmd) { 344 case SNDRV_PCM_TRIGGER_START: 345 case SNDRV_PCM_TRIGGER_RESUME: 346 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 347 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; 348 break; 349 case SNDRV_PCM_TRIGGER_STOP: 350 case SNDRV_PCM_TRIGGER_SUSPEND: 351 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; 352 break; 353 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 354 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; 355 break; 356 } 357 358 out: 359 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 360 mutex_unlock(&fe->card->mutex); 361 return ret; 362 } 363 364 static int soc_compr_set_params(struct snd_compr_stream *cstream, 365 struct snd_compr_params *params) 366 { 367 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 368 struct snd_soc_platform *platform = rtd->platform; 369 int ret = 0; 370 371 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 372 373 /* first we call set_params for the platform driver 374 * this should configure the soc side 375 * if the machine has compressed ops then we call that as well 376 * expectation is that platform and machine will configure everything 377 * for this compress path, like configuring pcm port for codec 378 */ 379 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { 380 ret = platform->driver->compr_ops->set_params(cstream, params); 381 if (ret < 0) 382 goto err; 383 } 384 385 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) { 386 ret = rtd->dai_link->compr_ops->set_params(cstream); 387 if (ret < 0) 388 goto err; 389 } 390 391 if (cstream->direction == SND_COMPRESS_PLAYBACK) 392 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, 393 SND_SOC_DAPM_STREAM_START); 394 else 395 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, 396 SND_SOC_DAPM_STREAM_START); 397 398 /* cancel any delayed stream shutdown that is pending */ 399 rtd->pop_wait = 0; 400 mutex_unlock(&rtd->pcm_mutex); 401 402 cancel_delayed_work_sync(&rtd->delayed_work); 403 404 return ret; 405 406 err: 407 mutex_unlock(&rtd->pcm_mutex); 408 return ret; 409 } 410 411 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream, 412 struct snd_compr_params *params) 413 { 414 struct snd_soc_pcm_runtime *fe = cstream->private_data; 415 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream; 416 struct snd_soc_platform *platform = fe->platform; 417 int ret = 0, stream; 418 419 if (cstream->direction == SND_COMPRESS_PLAYBACK) 420 stream = SNDRV_PCM_STREAM_PLAYBACK; 421 else 422 stream = SNDRV_PCM_STREAM_CAPTURE; 423 424 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); 425 426 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { 427 ret = platform->driver->compr_ops->set_params(cstream, params); 428 if (ret < 0) 429 goto out; 430 } 431 432 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) { 433 ret = fe->dai_link->compr_ops->set_params(cstream); 434 if (ret < 0) 435 goto out; 436 } 437 438 /* 439 * Create an empty hw_params for the BE as the machine driver must 440 * fix this up to match DSP decoder and ASRC configuration. 441 * I.e. machine driver fixup for compressed BE is mandatory. 442 */ 443 memset(&fe->dpcm[fe_substream->stream].hw_params, 0, 444 sizeof(struct snd_pcm_hw_params)); 445 446 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; 447 448 ret = dpcm_be_dai_hw_params(fe, stream); 449 if (ret < 0) 450 goto out; 451 452 ret = dpcm_be_dai_prepare(fe, stream); 453 if (ret < 0) 454 goto out; 455 456 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); 457 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; 458 459 out: 460 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; 461 mutex_unlock(&fe->card->mutex); 462 return ret; 463 } 464 465 static int soc_compr_get_params(struct snd_compr_stream *cstream, 466 struct snd_codec *params) 467 { 468 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 469 struct snd_soc_platform *platform = rtd->platform; 470 int ret = 0; 471 472 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 473 474 if (platform->driver->compr_ops && platform->driver->compr_ops->get_params) 475 ret = platform->driver->compr_ops->get_params(cstream, params); 476 477 mutex_unlock(&rtd->pcm_mutex); 478 return ret; 479 } 480 481 static int soc_compr_get_caps(struct snd_compr_stream *cstream, 482 struct snd_compr_caps *caps) 483 { 484 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 485 struct snd_soc_platform *platform = rtd->platform; 486 int ret = 0; 487 488 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 489 490 if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps) 491 ret = platform->driver->compr_ops->get_caps(cstream, caps); 492 493 mutex_unlock(&rtd->pcm_mutex); 494 return ret; 495 } 496 497 static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, 498 struct snd_compr_codec_caps *codec) 499 { 500 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 501 struct snd_soc_platform *platform = rtd->platform; 502 int ret = 0; 503 504 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 505 506 if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) 507 ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); 508 509 mutex_unlock(&rtd->pcm_mutex); 510 return ret; 511 } 512 513 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) 514 { 515 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 516 struct snd_soc_platform *platform = rtd->platform; 517 int ret = 0; 518 519 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 520 521 if (platform->driver->compr_ops && platform->driver->compr_ops->ack) 522 ret = platform->driver->compr_ops->ack(cstream, bytes); 523 524 mutex_unlock(&rtd->pcm_mutex); 525 return ret; 526 } 527 528 static int soc_compr_pointer(struct snd_compr_stream *cstream, 529 struct snd_compr_tstamp *tstamp) 530 { 531 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 532 struct snd_soc_platform *platform = rtd->platform; 533 534 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 535 536 if (platform->driver->compr_ops && platform->driver->compr_ops->pointer) 537 platform->driver->compr_ops->pointer(cstream, tstamp); 538 539 mutex_unlock(&rtd->pcm_mutex); 540 return 0; 541 } 542 543 static int soc_compr_copy(struct snd_compr_stream *cstream, 544 char __user *buf, size_t count) 545 { 546 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 547 struct snd_soc_platform *platform = rtd->platform; 548 int ret = 0; 549 550 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 551 552 if (platform->driver->compr_ops && platform->driver->compr_ops->copy) 553 ret = platform->driver->compr_ops->copy(cstream, buf, count); 554 555 mutex_unlock(&rtd->pcm_mutex); 556 return ret; 557 } 558 559 static int soc_compr_set_metadata(struct snd_compr_stream *cstream, 560 struct snd_compr_metadata *metadata) 561 { 562 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 563 struct snd_soc_platform *platform = rtd->platform; 564 int ret = 0; 565 566 if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata) 567 ret = platform->driver->compr_ops->set_metadata(cstream, metadata); 568 569 return ret; 570 } 571 572 static int soc_compr_get_metadata(struct snd_compr_stream *cstream, 573 struct snd_compr_metadata *metadata) 574 { 575 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 576 struct snd_soc_platform *platform = rtd->platform; 577 int ret = 0; 578 579 if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata) 580 ret = platform->driver->compr_ops->get_metadata(cstream, metadata); 581 582 return ret; 583 } 584 585 /* ASoC Compress operations */ 586 static struct snd_compr_ops soc_compr_ops = { 587 .open = soc_compr_open, 588 .free = soc_compr_free, 589 .set_params = soc_compr_set_params, 590 .set_metadata = soc_compr_set_metadata, 591 .get_metadata = soc_compr_get_metadata, 592 .get_params = soc_compr_get_params, 593 .trigger = soc_compr_trigger, 594 .pointer = soc_compr_pointer, 595 .ack = soc_compr_ack, 596 .get_caps = soc_compr_get_caps, 597 .get_codec_caps = soc_compr_get_codec_caps 598 }; 599 600 /* ASoC Dynamic Compress operations */ 601 static struct snd_compr_ops soc_compr_dyn_ops = { 602 .open = soc_compr_open_fe, 603 .free = soc_compr_free_fe, 604 .set_params = soc_compr_set_params_fe, 605 .get_params = soc_compr_get_params, 606 .set_metadata = soc_compr_set_metadata, 607 .get_metadata = soc_compr_get_metadata, 608 .trigger = soc_compr_trigger_fe, 609 .pointer = soc_compr_pointer, 610 .ack = soc_compr_ack, 611 .get_caps = soc_compr_get_caps, 612 .get_codec_caps = soc_compr_get_codec_caps 613 }; 614 615 /* create a new compress */ 616 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) 617 { 618 struct snd_soc_codec *codec = rtd->codec; 619 struct snd_soc_platform *platform = rtd->platform; 620 struct snd_soc_dai *codec_dai = rtd->codec_dai; 621 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 622 struct snd_compr *compr; 623 struct snd_pcm *be_pcm; 624 char new_name[64]; 625 int ret = 0, direction = 0; 626 627 if (rtd->num_codecs > 1) { 628 dev_err(rtd->card->dev, "Multicodec not supported for compressed stream\n"); 629 return -EINVAL; 630 } 631 632 /* check client and interface hw capabilities */ 633 snprintf(new_name, sizeof(new_name), "%s %s-%d", 634 rtd->dai_link->stream_name, codec_dai->name, num); 635 636 if (codec_dai->driver->playback.channels_min) 637 direction = SND_COMPRESS_PLAYBACK; 638 else if (codec_dai->driver->capture.channels_min) 639 direction = SND_COMPRESS_CAPTURE; 640 else 641 return -EINVAL; 642 643 compr = kzalloc(sizeof(*compr), GFP_KERNEL); 644 if (compr == NULL) { 645 snd_printk(KERN_ERR "Cannot allocate compr\n"); 646 return -ENOMEM; 647 } 648 649 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops), 650 GFP_KERNEL); 651 if (compr->ops == NULL) { 652 dev_err(rtd->card->dev, "Cannot allocate compressed ops\n"); 653 ret = -ENOMEM; 654 goto compr_err; 655 } 656 657 if (rtd->dai_link->dynamic) { 658 snprintf(new_name, sizeof(new_name), "(%s)", 659 rtd->dai_link->stream_name); 660 661 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, 662 rtd->dai_link->dpcm_playback, 663 rtd->dai_link->dpcm_capture, &be_pcm); 664 if (ret < 0) { 665 dev_err(rtd->card->dev, "ASoC: can't create compressed for %s\n", 666 rtd->dai_link->name); 667 goto compr_err; 668 } 669 670 rtd->pcm = be_pcm; 671 rtd->fe_compr = 1; 672 if (rtd->dai_link->dpcm_playback) 673 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; 674 else if (rtd->dai_link->dpcm_capture) 675 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; 676 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops)); 677 } else 678 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); 679 680 /* Add copy callback for not memory mapped DSPs */ 681 if (platform->driver->compr_ops && platform->driver->compr_ops->copy) 682 compr->ops->copy = soc_compr_copy; 683 684 mutex_init(&compr->lock); 685 ret = snd_compress_new(rtd->card->snd_card, num, direction, compr); 686 if (ret < 0) { 687 pr_err("compress asoc: can't create compress for codec %s\n", 688 codec->component.name); 689 goto compr_err; 690 } 691 692 /* DAPM dai link stream work */ 693 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); 694 695 rtd->compr = compr; 696 compr->private_data = rtd; 697 698 printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name, 699 cpu_dai->name); 700 return ret; 701 702 compr_err: 703 kfree(compr); 704 return ret; 705 } 706