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