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