sound/soc/soc-compress.c

   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
 144         if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
 145                 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
 146                 if (ret < 0) {
 147                         dev_err(cpu_dai->dev,
 148                                 "Compress ASoC: can't open interface %s: %d\n",
 149                                 cpu_dai->name, ret);
 150                         goto out;
 151                 }
 152         }
 153
 154         ret = soc_compr_components_open(cstream, &component);
 155         if (ret < 0)
 156                 goto machine_err;
 157
 158         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
 159                 ret = fe->dai_link->compr_ops->startup(cstream);
 160                 if (ret < 0) {
 161                         pr_err("Compress ASoC: %s startup failed: %d\n",
 162                                fe->dai_link->name, ret);
 163                         goto machine_err;
 164                 }
 165         }
 166
 167         fe->dpcm[stream].runtime = fe_substream->runtime;
 168
 169         ret = dpcm_path_get(fe, stream, &list);
 170         if (ret < 0)
 171                 goto fe_err;
 172         else if (ret == 0)
 173                 dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n",
 174                         fe->dai_link->name, stream ? "capture" : "playback");
 175
 176         /* calculate valid and active FE <-> BE dpcms */
 177         dpcm_process_paths(fe, stream, &list, 1);
 178
 179         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 180
 181         ret = dpcm_be_dai_startup(fe, stream);
 182         if (ret < 0) {
 183                 /* clean up all links */
 184                 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
 185                         dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
 186
 187                 dpcm_be_disconnect(fe, stream);
 188                 fe->dpcm[stream].runtime = NULL;
 189                 goto path_err;
 190         }
 191
 192         dpcm_clear_pending_state(fe, stream);
 193         dpcm_path_put(&list);
 194
 195         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
 196         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 197
 198         snd_soc_runtime_activate(fe, stream);
 199
 200         mutex_unlock(&fe->card->mutex);
 201
 202         return 0;
 203
 204 path_err:
 205         dpcm_path_put(&list);
 206 fe_err:
 207         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
 208                 fe->dai_link->compr_ops->shutdown(cstream);
 209 machine_err:
 210         soc_compr_components_free(cstream, component);
 211
 212         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 213                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 214 out:
 215         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 216         mutex_unlock(&fe->card->mutex);
 217         return ret;
 218 }
 219
 220 /*
 221  * Power down the audio subsystem pmdown_time msecs after close is called.
 222  * This is to ensure there are no pops or clicks in between any music tracks
 223  * due to DAPM power cycling.
 224  */
 225 static void close_delayed_work(struct work_struct *work)
 226 {
 227         struct snd_soc_pcm_runtime *rtd =
 228                         container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
 229         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 230
 231         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 232
 233         dev_dbg(rtd->dev,
 234                 "Compress ASoC: pop wq checking: %s status: %s waiting: %s\n",
 235                 codec_dai->driver->playback.stream_name,
 236                 codec_dai->playback_active ? "active" : "inactive",
 237                 rtd->pop_wait ? "yes" : "no");
 238
 239         /* are we waiting on this codec DAI stream */
 240         if (rtd->pop_wait == 1) {
 241                 rtd->pop_wait = 0;
 242                 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
 243                                           SND_SOC_DAPM_STREAM_STOP);
 244         }
 245
 246         mutex_unlock(&rtd->pcm_mutex);
 247 }
 248
 249 static int soc_compr_free(struct snd_compr_stream *cstream)
 250 {
 251         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 252         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 253         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 254         int stream;
 255
 256         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 257
 258         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 259                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 260         else
 261                 stream = SNDRV_PCM_STREAM_CAPTURE;
 262
 263         snd_soc_runtime_deactivate(rtd, stream);
 264
 265         snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
 266
 267         if (!cpu_dai->active)
 268                 cpu_dai->rate = 0;
 269
 270         if (!codec_dai->active)
 271                 codec_dai->rate = 0;
 272
 273         if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
 274                 rtd->dai_link->compr_ops->shutdown(cstream);
 275
 276         soc_compr_components_free(cstream, NULL);
 277
 278         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 279                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 280
 281         if (cstream->direction == SND_COMPRESS_PLAYBACK) {
 282                 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
 283                         snd_soc_dapm_stream_event(rtd,
 284                                                   SNDRV_PCM_STREAM_PLAYBACK,
 285                                                   SND_SOC_DAPM_STREAM_STOP);
 286                 } else {
 287                         rtd->pop_wait = 1;
 288                         queue_delayed_work(system_power_efficient_wq,
 289                                            &rtd->delayed_work,
 290                                            msecs_to_jiffies(rtd->pmdown_time));
 291                 }
 292         } else {
 293                 /* capture streams can be powered down now */
 294                 snd_soc_dapm_stream_event(rtd,
 295                                           SNDRV_PCM_STREAM_CAPTURE,
 296                                           SND_SOC_DAPM_STREAM_STOP);
 297         }
 298
 299         mutex_unlock(&rtd->pcm_mutex);
 300         return 0;
 301 }
 302
 303 static int soc_compr_free_fe(struct snd_compr_stream *cstream)
 304 {
 305         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 306         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 307         struct snd_soc_dpcm *dpcm;
 308         int stream, ret;
 309
 310         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 311
 312         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 313                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 314         else
 315                 stream = SNDRV_PCM_STREAM_CAPTURE;
 316
 317         snd_soc_runtime_deactivate(fe, stream);
 318
 319         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 320
 321         ret = dpcm_be_dai_hw_free(fe, stream);
 322         if (ret < 0)
 323                 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);
 324
 325         ret = dpcm_be_dai_shutdown(fe, stream);
 326
 327         /* mark FE's links ready to prune */
 328         list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
 329                 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
 330
 331         dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
 332
 333         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
 334         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 335
 336         dpcm_be_disconnect(fe, stream);
 337
 338         fe->dpcm[stream].runtime = NULL;
 339
 340         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
 341                 fe->dai_link->compr_ops->shutdown(cstream);
 342
 343         soc_compr_components_free(cstream, NULL);
 344
 345         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 346                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 347
 348         mutex_unlock(&fe->card->mutex);
 349         return 0;
 350 }
 351
 352 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
 353 {
 354
 355         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 356         struct snd_soc_component *component;
 357         struct snd_soc_rtdcom_list *rtdcom;
 358         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 359         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 360         int ret = 0, __ret;
 361
 362         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 363
 364         for_each_rtdcom(rtd, rtdcom) {
 365                 component = rtdcom->component;
 366
 367                 if (!component->driver->compr_ops ||
 368                     !component->driver->compr_ops->trigger)
 369                         continue;
 370
 371                 __ret = component->driver->compr_ops->trigger(cstream, cmd);
 372                 if (__ret < 0)
 373                         ret = __ret;
 374         }
 375         if (ret < 0)
 376                 goto out;
 377
 378         if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
 379                 cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
 380
 381         switch (cmd) {
 382         case SNDRV_PCM_TRIGGER_START:
 383                 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
 384                 break;
 385         case SNDRV_PCM_TRIGGER_STOP:
 386                 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
 387                 break;
 388         }
 389
 390 out:
 391         mutex_unlock(&rtd->pcm_mutex);
 392         return ret;
 393 }
 394
 395 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
 396 {
 397         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 398         struct snd_soc_component *component;
 399         struct snd_soc_rtdcom_list *rtdcom;
 400         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 401         int ret = 0, __ret, stream;
 402
 403         if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
 404                 cmd == SND_COMPR_TRIGGER_DRAIN) {
 405
 406                 for_each_rtdcom(fe, rtdcom) {
 407                         component = rtdcom->component;
 408
 409                         if (!component->driver->compr_ops ||
 410                             !component->driver->compr_ops->trigger)
 411                                 continue;
 412
 413                         __ret = component->driver->compr_ops->trigger(cstream, cmd);
 414                         if (__ret < 0)
 415                                 ret = __ret;
 416                 }
 417                 return ret;
 418         }
 419
 420         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 421                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 422         else
 423                 stream = SNDRV_PCM_STREAM_CAPTURE;
 424
 425         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 426
 427         if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) {
 428                 ret = cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
 429                 if (ret < 0)
 430                         goto out;
 431         }
 432
 433         for_each_rtdcom(fe, rtdcom) {
 434                 component = rtdcom->component;
 435
 436                 if (!component->driver->compr_ops ||
 437                     !component->driver->compr_ops->trigger)
 438                         continue;
 439
 440                 __ret = component->driver->compr_ops->trigger(cstream, cmd);
 441                 if (__ret < 0)
 442                         ret = __ret;
 443         }
 444         if (ret < 0)
 445                 goto out;
 446
 447         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 448
 449         ret = dpcm_be_dai_trigger(fe, stream, cmd);
 450
 451         switch (cmd) {
 452         case SNDRV_PCM_TRIGGER_START:
 453         case SNDRV_PCM_TRIGGER_RESUME:
 454         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 455                 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
 456                 break;
 457         case SNDRV_PCM_TRIGGER_STOP:
 458         case SNDRV_PCM_TRIGGER_SUSPEND:
 459                 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
 460                 break;
 461         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 462                 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
 463                 break;
 464         }
 465
 466 out:
 467         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 468         mutex_unlock(&fe->card->mutex);
 469         return ret;
 470 }
 471
 472 static int soc_compr_set_params(struct snd_compr_stream *cstream,
 473                                         struct snd_compr_params *params)
 474 {
 475         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 476         struct snd_soc_component *component;
 477         struct snd_soc_rtdcom_list *rtdcom;
 478         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 479         int ret = 0, __ret;
 480
 481         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 482
 483         /*
 484          * First we call set_params for the CPU DAI, then the component
 485          * driver this should configure the SoC side. If the machine has
 486          * compressed ops then we call that as well. The expectation is
 487          * that these callbacks will configure everything for this compress
 488          * path, like configuring a PCM port for a CODEC.
 489          */
 490         if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
 491                 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
 492                 if (ret < 0)
 493                         goto err;
 494         }
 495
 496         for_each_rtdcom(rtd, rtdcom) {
 497                 component = rtdcom->component;
 498
 499                 if (!component->driver->compr_ops ||
 500                     !component->driver->compr_ops->set_params)
 501                         continue;
 502
 503                 __ret = component->driver->compr_ops->set_params(cstream, params);
 504                 if (__ret < 0)
 505                         ret = __ret;
 506         }
 507         if (ret < 0)
 508                 goto err;
 509
 510         if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
 511                 ret = rtd->dai_link->compr_ops->set_params(cstream);
 512                 if (ret < 0)
 513                         goto err;
 514         }
 515
 516         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 517                 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
 518                                           SND_SOC_DAPM_STREAM_START);
 519         else
 520                 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
 521                                           SND_SOC_DAPM_STREAM_START);
 522
 523         /* cancel any delayed stream shutdown that is pending */
 524         rtd->pop_wait = 0;
 525         mutex_unlock(&rtd->pcm_mutex);
 526
 527         cancel_delayed_work_sync(&rtd->delayed_work);
 528
 529         return ret;
 530
 531 err:
 532         mutex_unlock(&rtd->pcm_mutex);
 533         return ret;
 534 }
 535
 536 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
 537                                    struct snd_compr_params *params)
 538 {
 539         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 540         struct snd_pcm_substream *fe_substream =
 541                  fe->pcm->streams[cstream->direction].substream;
 542         struct snd_soc_component *component;
 543         struct snd_soc_rtdcom_list *rtdcom;
 544         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 545         int ret = 0, __ret, stream;
 546
 547         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 548                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 549         else
 550                 stream = SNDRV_PCM_STREAM_CAPTURE;
 551
 552         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 553
 554         if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
 555                 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
 556                 if (ret < 0)
 557                         goto out;
 558         }
 559
 560         for_each_rtdcom(fe, rtdcom) {
 561                 component = rtdcom->component;
 562
 563                 if (!component->driver->compr_ops ||
 564                     !component->driver->compr_ops->set_params)
 565                         continue;
 566
 567                 __ret = component->driver->compr_ops->set_params(cstream, params);
 568                 if (__ret < 0)
 569                         ret = __ret;
 570         }
 571         if (ret < 0)
 572                 goto out;
 573
 574         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
 575                 ret = fe->dai_link->compr_ops->set_params(cstream);
 576                 if (ret < 0)
 577                         goto out;
 578         }
 579
 580         /*
 581          * Create an empty hw_params for the BE as the machine driver must
 582          * fix this up to match DSP decoder and ASRC configuration.
 583          * I.e. machine driver fixup for compressed BE is mandatory.
 584          */
 585         memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
 586                 sizeof(struct snd_pcm_hw_params));
 587
 588         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 589
 590         ret = dpcm_be_dai_hw_params(fe, stream);
 591         if (ret < 0)
 592                 goto out;
 593
 594         ret = dpcm_be_dai_prepare(fe, stream);
 595         if (ret < 0)
 596                 goto out;
 597
 598         dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
 599         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
 600
 601 out:
 602         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 603         mutex_unlock(&fe->card->mutex);
 604         return ret;
 605 }
 606
 607 static int soc_compr_get_params(struct snd_compr_stream *cstream,
 608                                 struct snd_codec *params)
 609 {
 610         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 611         struct snd_soc_component *component;
 612         struct snd_soc_rtdcom_list *rtdcom;
 613         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 614         int ret = 0, __ret;
 615
 616         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 617
 618         if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) {
 619                 ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai);
 620                 if (ret < 0)
 621                         goto err;
 622         }
 623
 624         for_each_rtdcom(rtd, rtdcom) {
 625                 component = rtdcom->component;
 626
 627                 if (!component->driver->compr_ops ||
 628                     !component->driver->compr_ops->get_params)
 629                         continue;
 630
 631                 __ret = component->driver->compr_ops->get_params(cstream, params);
 632                 if (__ret < 0)
 633                         ret = __ret;
 634         }
 635
 636 err:
 637         mutex_unlock(&rtd->pcm_mutex);
 638         return ret;
 639 }
 640
 641 static int soc_compr_get_caps(struct snd_compr_stream *cstream,
 642                               struct snd_compr_caps *caps)
 643 {
 644         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 645         struct snd_soc_component *component;
 646         struct snd_soc_rtdcom_list *rtdcom;
 647         int ret = 0, __ret;
 648
 649         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 650
 651         for_each_rtdcom(rtd, rtdcom) {
 652                 component = rtdcom->component;
 653
 654                 if (!component->driver->compr_ops ||
 655                     !component->driver->compr_ops->get_caps)
 656                         continue;
 657
 658                 __ret = component->driver->compr_ops->get_caps(cstream, caps);
 659                 if (__ret < 0)
 660                         ret = __ret;
 661         }
 662
 663         mutex_unlock(&rtd->pcm_mutex);
 664         return ret;
 665 }
 666
 667 static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
 668                                     struct snd_compr_codec_caps *codec)
 669 {
 670         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 671         struct snd_soc_component *component;
 672         struct snd_soc_rtdcom_list *rtdcom;
 673         int ret = 0, __ret;
 674
 675         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 676
 677         for_each_rtdcom(rtd, rtdcom) {
 678                 component = rtdcom->component;
 679
 680                 if (!component->driver->compr_ops ||
 681                     !component->driver->compr_ops->get_codec_caps)
 682                         continue;
 683
 684                 __ret = component->driver->compr_ops->get_codec_caps(cstream, codec);
 685                 if (__ret < 0)
 686                         ret = __ret;
 687         }
 688
 689         mutex_unlock(&rtd->pcm_mutex);
 690         return ret;
 691 }
 692
 693 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
 694 {
 695         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 696         struct snd_soc_component *component;
 697         struct snd_soc_rtdcom_list *rtdcom;
 698         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 699         int ret = 0, __ret;
 700
 701         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 702
 703         if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) {
 704                 ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai);
 705                 if (ret < 0)
 706                         goto err;
 707         }
 708
 709         for_each_rtdcom(rtd, rtdcom) {
 710                 component = rtdcom->component;
 711
 712                 if (!component->driver->compr_ops ||
 713                     !component->driver->compr_ops->ack)
 714                         continue;
 715
 716                 __ret = component->driver->compr_ops->ack(cstream, bytes);
 717                 if (__ret < 0)
 718                         ret = __ret;
 719         }
 720
 721 err:
 722         mutex_unlock(&rtd->pcm_mutex);
 723         return ret;
 724 }
 725
 726 static int soc_compr_pointer(struct snd_compr_stream *cstream,
 727                              struct snd_compr_tstamp *tstamp)
 728 {
 729         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 730         struct snd_soc_component *component;
 731         struct snd_soc_rtdcom_list *rtdcom;
 732         int ret = 0, __ret;
 733         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 734
 735         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 736
 737         if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
 738                 cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
 739
 740         for_each_rtdcom(rtd, rtdcom) {
 741                 component = rtdcom->component;
 742
 743                 if (!component->driver->compr_ops ||
 744                     !component->driver->compr_ops->pointer)
 745                         continue;
 746
 747                 __ret = component->driver->compr_ops->pointer(cstream, tstamp);
 748                 if (__ret < 0)
 749                         ret = __ret;
 750         }
 751
 752         mutex_unlock(&rtd->pcm_mutex);
 753         return ret;
 754 }
 755
 756 static int soc_compr_copy(struct snd_compr_stream *cstream,
 757                           char __user *buf, size_t count)
 758 {
 759         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 760         struct snd_soc_component *component;
 761         struct snd_soc_rtdcom_list *rtdcom;
 762         int ret = 0;
 763
 764         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
 765
 766         for_each_rtdcom(rtd, rtdcom) {
 767                 component = rtdcom->component;
 768
 769                 if (!component->driver->compr_ops ||
 770                     !component->driver->compr_ops->copy)
 771                         continue;
 772
 773                 ret = component->driver->compr_ops->copy(cstream, buf, count);
 774                 break;
 775         }
 776
 777         mutex_unlock(&rtd->pcm_mutex);
 778         return ret;
 779 }
 780
 781 static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
 782                                   struct snd_compr_metadata *metadata)
 783 {
 784         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 785         struct snd_soc_component *component;
 786         struct snd_soc_rtdcom_list *rtdcom;
 787         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 788         int ret = 0, __ret;
 789
 790         if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) {
 791                 ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai);
 792                 if (ret < 0)
 793                         return ret;
 794         }
 795
 796         for_each_rtdcom(rtd, rtdcom) {
 797                 component = rtdcom->component;
 798
 799                 if (!component->driver->compr_ops ||
 800                     !component->driver->compr_ops->set_metadata)
 801                         continue;
 802
 803                 __ret = component->driver->compr_ops->set_metadata(cstream, metadata);
 804                 if (__ret < 0)
 805                         ret = __ret;
 806         }
 807
 808         return ret;
 809 }
 810
 811 static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
 812                                   struct snd_compr_metadata *metadata)
 813 {
 814         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 815         struct snd_soc_component *component;
 816         struct snd_soc_rtdcom_list *rtdcom;
 817         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 818         int ret = 0, __ret;
 819
 820         if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) {
 821                 ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai);
 822                 if (ret < 0)
 823                         return ret;
 824         }
 825
 826         for_each_rtdcom(rtd, rtdcom) {
 827                 component = rtdcom->component;
 828
 829                 if (!component->driver->compr_ops ||
 830                     !component->driver->compr_ops->get_metadata)
 831                         continue;
 832
 833                 __ret = component->driver->compr_ops->get_metadata(cstream, metadata);
 834                 if (__ret < 0)
 835                         ret = __ret;
 836         }
 837
 838         return ret;
 839 }
 840
 841 /* ASoC Compress operations */
 842 static struct snd_compr_ops soc_compr_ops = {
 843         .open           = soc_compr_open,
 844         .free           = soc_compr_free,
 845         .set_params     = soc_compr_set_params,
 846         .set_metadata   = soc_compr_set_metadata,
 847         .get_metadata   = soc_compr_get_metadata,
 848         .get_params     = soc_compr_get_params,
 849         .trigger        = soc_compr_trigger,
 850         .pointer        = soc_compr_pointer,
 851         .ack            = soc_compr_ack,
 852         .get_caps       = soc_compr_get_caps,
 853         .get_codec_caps = soc_compr_get_codec_caps
 854 };
 855
 856 /* ASoC Dynamic Compress operations */
 857 static struct snd_compr_ops soc_compr_dyn_ops = {
 858         .open           = soc_compr_open_fe,
 859         .free           = soc_compr_free_fe,
 860         .set_params     = soc_compr_set_params_fe,
 861         .get_params     = soc_compr_get_params,
 862         .set_metadata   = soc_compr_set_metadata,
 863         .get_metadata   = soc_compr_get_metadata,
 864         .trigger        = soc_compr_trigger_fe,
 865         .pointer        = soc_compr_pointer,
 866         .ack            = soc_compr_ack,
 867         .get_caps       = soc_compr_get_caps,
 868         .get_codec_caps = soc_compr_get_codec_caps
 869 };
 870
 871 /**
 872  * snd_soc_new_compress - create a new compress.
 873  *
 874  * @rtd: The runtime for which we will create compress
 875  * @num: the device index number (zero based - shared with normal PCMs)
 876  *
 877  * Return: 0 for success, else error.
 878  */
 879 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
 880 {
 881         struct snd_soc_component *component;
 882         struct snd_soc_rtdcom_list *rtdcom;
 883         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 884         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 885         struct snd_compr *compr;
 886         struct snd_pcm *be_pcm;
 887         char new_name[64];
 888         int ret = 0, direction = 0;
 889         int playback = 0, capture = 0;
 890
 891         if (rtd->num_codecs > 1) {
 892                 dev_err(rtd->card->dev,
 893                         "Compress ASoC: Multicodec not supported\n");
 894                 return -EINVAL;
 895         }
 896
 897         /* check client and interface hw capabilities */
 898         if (codec_dai->driver->playback.channels_min)
 899                 playback = 1;
 900         if (codec_dai->driver->capture.channels_min)
 901                 capture = 1;
 902
 903         capture = capture && cpu_dai->driver->capture.channels_min;
 904         playback = playback && cpu_dai->driver->playback.channels_min;
 905
 906         /*
 907          * Compress devices are unidirectional so only one of the directions
 908          * should be set, check for that (xor)
 909          */
 910         if (playback + capture != 1) {
 911                 dev_err(rtd->card->dev,
 912                         "Compress ASoC: Invalid direction for P %d, C %d\n",
 913                         playback, capture);
 914                 return -EINVAL;
 915         }
 916
 917         if (playback)
 918                 direction = SND_COMPRESS_PLAYBACK;
 919         else
 920                 direction = SND_COMPRESS_CAPTURE;
 921
 922         compr = kzalloc(sizeof(*compr), GFP_KERNEL);
 923         if (!compr)
 924                 return -ENOMEM;
 925
 926         compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
 927                                   GFP_KERNEL);
 928         if (!compr->ops) {
 929                 ret = -ENOMEM;
 930                 goto compr_err;
 931         }
 932
 933         if (rtd->dai_link->dynamic) {
 934                 snprintf(new_name, sizeof(new_name), "(%s)",
 935                         rtd->dai_link->stream_name);
 936
 937                 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
 938                                 rtd->dai_link->dpcm_playback,
 939                                 rtd->dai_link->dpcm_capture, &be_pcm);
 940                 if (ret < 0) {
 941                         dev_err(rtd->card->dev,
 942                                 "Compress ASoC: can't create compressed for %s: %d\n",
 943                                 rtd->dai_link->name, ret);
 944                         goto compr_err;
 945                 }
 946
 947                 rtd->pcm = be_pcm;
 948                 rtd->fe_compr = 1;
 949                 if (rtd->dai_link->dpcm_playback)
 950                         be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
 951                 else if (rtd->dai_link->dpcm_capture)
 952                         be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
 953                 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
 954         } else {
 955                 snprintf(new_name, sizeof(new_name), "%s %s-%d",
 956                         rtd->dai_link->stream_name, codec_dai->name, num);
 957
 958                 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
 959         }
 960
 961         for_each_rtdcom(rtd, rtdcom) {
 962                 component = rtdcom->component;
 963
 964                 if (!component->driver->compr_ops ||
 965                     !component->driver->compr_ops->copy)
 966                         continue;
 967
 968                 compr->ops->copy = soc_compr_copy;
 969                 break;
 970         }
 971
 972         mutex_init(&compr->lock);
 973         ret = snd_compress_new(rtd->card->snd_card, num, direction,
 974                                 new_name, compr);
 975         if (ret < 0) {
 976                 component = rtd->codec_dai->component;
 977                 dev_err(component->dev,
 978                         "Compress ASoC: can't create compress for codec %s: %d\n",
 979                         component->name, ret);
 980                 goto compr_err;
 981         }
 982
 983         /* DAPM dai link stream work */
 984         INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
 985
 986         rtd->compr = compr;
 987         compr->private_data = rtd;
 988
 989         dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
 990                  codec_dai->name, cpu_dai->name);
 991         return ret;
 992
 993 compr_err:
 994         kfree(compr);
 995         return ret;
 996 }
 997 EXPORT_SYMBOL_GPL(snd_soc_new_compress);