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_rtd_components(rtd, rtdcom, component) {
  32                 if (!component->driver->compr_ops ||
  33                     !component->driver->compr_ops->open)
  34                         continue;
  35
  36                 ret = component->driver->compr_ops->open(cstream);
  37                 if (ret < 0) {
  38                         dev_err(component->dev,
  39                                 "Compress ASoC: can't open platform %s: %d\n",
  40                                 component->name, ret);
  41
  42                         *last = component;
  43                         return ret;
  44                 }
  45         }
  46
  47         *last = NULL;
  48         return 0;
  49 }
  50
  51 static int soc_compr_components_free(struct snd_compr_stream *cstream,
  52                                      struct snd_soc_component *last)
  53 {
  54         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
  55         struct snd_soc_component *component;
  56         struct snd_soc_rtdcom_list *rtdcom;
  57
  58         for_each_rtd_components(rtd, rtdcom, component) {
  59                 if (component == last)
  60                         break;
  61
  62                 if (!component->driver->compr_ops ||
  63                     !component->driver->compr_ops->free)
  64                         continue;
  65
  66                 component->driver->compr_ops->free(cstream);
  67         }
  68
  69         return 0;
  70 }
  71
  72 static int soc_compr_open(struct snd_compr_stream *cstream)
  73 {
  74         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
  75         struct snd_soc_component *component;
  76         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  77         int ret;
  78
  79         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
  80
  81         if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
  82                 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
  83                 if (ret < 0) {
  84                         dev_err(cpu_dai->dev,
  85                                 "Compress ASoC: can't open interface %s: %d\n",
  86                                 cpu_dai->name, ret);
  87                         goto out;
  88                 }
  89         }
  90
  91         ret = soc_compr_components_open(cstream, &component);
  92         if (ret < 0)
  93                 goto machine_err;
  94
  95         if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
  96                 ret = rtd->dai_link->compr_ops->startup(cstream);
  97                 if (ret < 0) {
  98                         dev_err(rtd->dev,
  99                                 "Compress ASoC: %s startup failed: %d\n",
 100                                 rtd->dai_link->name, ret);
 101                         goto machine_err;
 102                 }
 103         }
 104
 105         snd_soc_runtime_activate(rtd, cstream->direction);
 106
 107         mutex_unlock(&rtd->card->pcm_mutex);
 108
 109         return 0;
 110
 111 machine_err:
 112         soc_compr_components_free(cstream, component);
 113
 114         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 115                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 116 out:
 117         mutex_unlock(&rtd->card->pcm_mutex);
 118         return ret;
 119 }
 120
 121 static int soc_compr_open_fe(struct snd_compr_stream *cstream)
 122 {
 123         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 124         struct snd_pcm_substream *fe_substream =
 125                  fe->pcm->streams[cstream->direction].substream;
 126         struct snd_soc_component *component;
 127         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 128         struct snd_soc_dpcm *dpcm;
 129         struct snd_soc_dapm_widget_list *list;
 130         int stream;
 131         int ret;
 132
 133         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 134                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 135         else
 136                 stream = SNDRV_PCM_STREAM_CAPTURE;
 137
 138         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 139         fe->dpcm[stream].runtime = fe_substream->runtime;
 140
 141         ret = dpcm_path_get(fe, stream, &list);
 142         if (ret < 0)
 143                 goto be_err;
 144         else if (ret == 0)
 145                 dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n",
 146                         fe->dai_link->name, stream ? "capture" : "playback");
 147         /* calculate valid and active FE <-> BE dpcms */
 148         dpcm_process_paths(fe, stream, &list, 1);
 149         fe->dpcm[stream].runtime = fe_substream->runtime;
 150
 151         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 152
 153         ret = dpcm_be_dai_startup(fe, stream);
 154         if (ret < 0) {
 155                 /* clean up all links */
 156                 for_each_dpcm_be(fe, stream, dpcm)
 157                         dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
 158
 159                 dpcm_be_disconnect(fe, stream);
 160                 fe->dpcm[stream].runtime = NULL;
 161                 goto out;
 162         }
 163
 164         if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
 165                 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
 166                 if (ret < 0) {
 167                         dev_err(cpu_dai->dev,
 168                                 "Compress ASoC: can't open interface %s: %d\n",
 169                                 cpu_dai->name, ret);
 170                         goto out;
 171                 }
 172         }
 173
 174         ret = soc_compr_components_open(cstream, &component);
 175         if (ret < 0)
 176                 goto open_err;
 177
 178         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
 179                 ret = fe->dai_link->compr_ops->startup(cstream);
 180                 if (ret < 0) {
 181                         pr_err("Compress ASoC: %s startup failed: %d\n",
 182                                fe->dai_link->name, ret);
 183                         goto machine_err;
 184                 }
 185         }
 186
 187         dpcm_clear_pending_state(fe, stream);
 188         dpcm_path_put(&list);
 189
 190         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
 191         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 192
 193         snd_soc_runtime_activate(fe, stream);
 194
 195         mutex_unlock(&fe->card->mutex);
 196
 197         return 0;
 198
 199 machine_err:
 200         soc_compr_components_free(cstream, component);
 201 open_err:
 202         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 203                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 204 out:
 205         dpcm_path_put(&list);
 206 be_err:
 207         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 208         mutex_unlock(&fe->card->mutex);
 209         return ret;
 210 }
 211
 212 /*
 213  * Power down the audio subsystem pmdown_time msecs after close is called.
 214  * This is to ensure there are no pops or clicks in between any music tracks
 215  * due to DAPM power cycling.
 216  */
 217 static void close_delayed_work(struct snd_soc_pcm_runtime *rtd)
 218 {
 219         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 220
 221         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 222
 223         dev_dbg(rtd->dev,
 224                 "Compress ASoC: pop wq checking: %s status: %s waiting: %s\n",
 225                 codec_dai->driver->playback.stream_name,
 226                 codec_dai->playback_active ? "active" : "inactive",
 227                 rtd->pop_wait ? "yes" : "no");
 228
 229         /* are we waiting on this codec DAI stream */
 230         if (rtd->pop_wait == 1) {
 231                 rtd->pop_wait = 0;
 232                 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
 233                                           SND_SOC_DAPM_STREAM_STOP);
 234         }
 235
 236         mutex_unlock(&rtd->card->pcm_mutex);
 237 }
 238
 239 static int soc_compr_free(struct snd_compr_stream *cstream)
 240 {
 241         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 242         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 243         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 244         int stream;
 245
 246         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 247
 248         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 249                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 250         else
 251                 stream = SNDRV_PCM_STREAM_CAPTURE;
 252
 253         snd_soc_runtime_deactivate(rtd, stream);
 254
 255         snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
 256
 257         if (!cpu_dai->active)
 258                 cpu_dai->rate = 0;
 259
 260         if (!codec_dai->active)
 261                 codec_dai->rate = 0;
 262
 263         if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
 264                 rtd->dai_link->compr_ops->shutdown(cstream);
 265
 266         soc_compr_components_free(cstream, NULL);
 267
 268         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 269                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 270
 271         if (cstream->direction == SND_COMPRESS_PLAYBACK) {
 272                 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
 273                         snd_soc_dapm_stream_event(rtd,
 274                                                   SNDRV_PCM_STREAM_PLAYBACK,
 275                                                   SND_SOC_DAPM_STREAM_STOP);
 276                 } else {
 277                         rtd->pop_wait = 1;
 278                         queue_delayed_work(system_power_efficient_wq,
 279                                            &rtd->delayed_work,
 280                                            msecs_to_jiffies(rtd->pmdown_time));
 281                 }
 282         } else {
 283                 /* capture streams can be powered down now */
 284                 snd_soc_dapm_stream_event(rtd,
 285                                           SNDRV_PCM_STREAM_CAPTURE,
 286                                           SND_SOC_DAPM_STREAM_STOP);
 287         }
 288
 289         mutex_unlock(&rtd->card->pcm_mutex);
 290         return 0;
 291 }
 292
 293 static int soc_compr_free_fe(struct snd_compr_stream *cstream)
 294 {
 295         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 296         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 297         struct snd_soc_dpcm *dpcm;
 298         int stream, ret;
 299
 300         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 301
 302         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 303                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 304         else
 305                 stream = SNDRV_PCM_STREAM_CAPTURE;
 306
 307         snd_soc_runtime_deactivate(fe, stream);
 308
 309         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 310
 311         ret = dpcm_be_dai_hw_free(fe, stream);
 312         if (ret < 0)
 313                 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);
 314
 315         ret = dpcm_be_dai_shutdown(fe, stream);
 316
 317         /* mark FE's links ready to prune */
 318         for_each_dpcm_be(fe, stream, dpcm)
 319                 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
 320
 321         dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
 322
 323         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
 324         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 325
 326         dpcm_be_disconnect(fe, stream);
 327
 328         fe->dpcm[stream].runtime = NULL;
 329
 330         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
 331                 fe->dai_link->compr_ops->shutdown(cstream);
 332
 333         soc_compr_components_free(cstream, NULL);
 334
 335         if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 336                 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 337
 338         mutex_unlock(&fe->card->mutex);
 339         return 0;
 340 }
 341
 342 static int soc_compr_components_trigger(struct snd_compr_stream *cstream,
 343                                         int cmd)
 344 {
 345         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 346         struct snd_soc_component *component;
 347         struct snd_soc_rtdcom_list *rtdcom;
 348         int ret;
 349
 350         for_each_rtd_components(rtd, rtdcom, component) {
 351                 if (!component->driver->compr_ops ||
 352                     !component->driver->compr_ops->trigger)
 353                         continue;
 354
 355                 ret = component->driver->compr_ops->trigger(cstream, cmd);
 356                 if (ret < 0)
 357                         return ret;
 358         }
 359
 360         return 0;
 361 }
 362
 363 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
 364 {
 365         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 366         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 367         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 368         int ret;
 369
 370         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 371
 372         ret = soc_compr_components_trigger(cstream, cmd);
 373         if (ret < 0)
 374                 goto out;
 375
 376         if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
 377                 cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
 378
 379         switch (cmd) {
 380         case SNDRV_PCM_TRIGGER_START:
 381                 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
 382                 break;
 383         case SNDRV_PCM_TRIGGER_STOP:
 384                 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
 385                 break;
 386         }
 387
 388 out:
 389         mutex_unlock(&rtd->card->pcm_mutex);
 390         return ret;
 391 }
 392
 393 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
 394 {
 395         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 396         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 397         int ret, stream;
 398
 399         if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
 400             cmd == SND_COMPR_TRIGGER_DRAIN)
 401                 return soc_compr_components_trigger(cstream, cmd);
 402
 403         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 404                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 405         else
 406                 stream = SNDRV_PCM_STREAM_CAPTURE;
 407
 408         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 409
 410         if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) {
 411                 ret = cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
 412                 if (ret < 0)
 413                         goto out;
 414         }
 415
 416         ret = soc_compr_components_trigger(cstream, cmd);
 417         if (ret < 0)
 418                 goto out;
 419
 420         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 421
 422         ret = dpcm_be_dai_trigger(fe, stream, cmd);
 423
 424         switch (cmd) {
 425         case SNDRV_PCM_TRIGGER_START:
 426         case SNDRV_PCM_TRIGGER_RESUME:
 427         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 428                 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
 429                 break;
 430         case SNDRV_PCM_TRIGGER_STOP:
 431         case SNDRV_PCM_TRIGGER_SUSPEND:
 432                 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
 433                 break;
 434         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 435                 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
 436                 break;
 437         }
 438
 439 out:
 440         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 441         mutex_unlock(&fe->card->mutex);
 442         return ret;
 443 }
 444
 445 static int soc_compr_components_set_params(struct snd_compr_stream *cstream,
 446                                            struct snd_compr_params *params)
 447 {
 448         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 449         struct snd_soc_component *component;
 450         struct snd_soc_rtdcom_list *rtdcom;
 451         int ret;
 452
 453         for_each_rtd_components(rtd, rtdcom, component) {
 454                 if (!component->driver->compr_ops ||
 455                     !component->driver->compr_ops->set_params)
 456                         continue;
 457
 458                 ret = component->driver->compr_ops->set_params(cstream, params);
 459                 if (ret < 0)
 460                         return ret;
 461         }
 462
 463         return 0;
 464 }
 465
 466 static int soc_compr_set_params(struct snd_compr_stream *cstream,
 467                                 struct snd_compr_params *params)
 468 {
 469         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 470         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 471         int ret;
 472
 473         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 474
 475         /*
 476          * First we call set_params for the CPU DAI, then the component
 477          * driver this should configure the SoC side. If the machine has
 478          * compressed ops then we call that as well. The expectation is
 479          * that these callbacks will configure everything for this compress
 480          * path, like configuring a PCM port for a CODEC.
 481          */
 482         if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
 483                 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
 484                 if (ret < 0)
 485                         goto err;
 486         }
 487
 488         ret = soc_compr_components_set_params(cstream, params);
 489         if (ret < 0)
 490                 goto err;
 491
 492         if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
 493                 ret = rtd->dai_link->compr_ops->set_params(cstream);
 494                 if (ret < 0)
 495                         goto err;
 496         }
 497
 498         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 499                 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
 500                                           SND_SOC_DAPM_STREAM_START);
 501         else
 502                 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
 503                                           SND_SOC_DAPM_STREAM_START);
 504
 505         /* cancel any delayed stream shutdown that is pending */
 506         rtd->pop_wait = 0;
 507         mutex_unlock(&rtd->card->pcm_mutex);
 508
 509         cancel_delayed_work_sync(&rtd->delayed_work);
 510
 511         return 0;
 512
 513 err:
 514         mutex_unlock(&rtd->card->pcm_mutex);
 515         return ret;
 516 }
 517
 518 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
 519                                    struct snd_compr_params *params)
 520 {
 521         struct snd_soc_pcm_runtime *fe = cstream->private_data;
 522         struct snd_pcm_substream *fe_substream =
 523                  fe->pcm->streams[cstream->direction].substream;
 524         struct snd_soc_dai *cpu_dai = fe->cpu_dai;
 525         int ret, stream;
 526
 527         if (cstream->direction == SND_COMPRESS_PLAYBACK)
 528                 stream = SNDRV_PCM_STREAM_PLAYBACK;
 529         else
 530                 stream = SNDRV_PCM_STREAM_CAPTURE;
 531
 532         mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
 533
 534         /*
 535          * Create an empty hw_params for the BE as the machine driver must
 536          * fix this up to match DSP decoder and ASRC configuration.
 537          * I.e. machine driver fixup for compressed BE is mandatory.
 538          */
 539         memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
 540                 sizeof(struct snd_pcm_hw_params));
 541
 542         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 543
 544         ret = dpcm_be_dai_hw_params(fe, stream);
 545         if (ret < 0)
 546                 goto out;
 547
 548         ret = dpcm_be_dai_prepare(fe, stream);
 549         if (ret < 0)
 550                 goto out;
 551
 552         if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
 553                 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
 554                 if (ret < 0)
 555                         goto out;
 556         }
 557
 558         ret = soc_compr_components_set_params(cstream, params);
 559         if (ret < 0)
 560                 goto out;
 561
 562         if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
 563                 ret = fe->dai_link->compr_ops->set_params(cstream);
 564                 if (ret < 0)
 565                         goto out;
 566         }
 567
 568         dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
 569         fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
 570
 571 out:
 572         fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
 573         mutex_unlock(&fe->card->mutex);
 574         return ret;
 575 }
 576
 577 static int soc_compr_get_params(struct snd_compr_stream *cstream,
 578                                 struct snd_codec *params)
 579 {
 580         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 581         struct snd_soc_component *component;
 582         struct snd_soc_rtdcom_list *rtdcom;
 583         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 584         int ret = 0;
 585
 586         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 587
 588         if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) {
 589                 ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai);
 590                 if (ret < 0)
 591                         goto err;
 592         }
 593
 594         for_each_rtd_components(rtd, rtdcom, component) {
 595                 if (!component->driver->compr_ops ||
 596                     !component->driver->compr_ops->get_params)
 597                         continue;
 598
 599                 ret = component->driver->compr_ops->get_params(cstream, params);
 600                 break;
 601         }
 602
 603 err:
 604         mutex_unlock(&rtd->card->pcm_mutex);
 605         return ret;
 606 }
 607
 608 static int soc_compr_get_caps(struct snd_compr_stream *cstream,
 609                               struct snd_compr_caps *caps)
 610 {
 611         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 612         struct snd_soc_component *component;
 613         struct snd_soc_rtdcom_list *rtdcom;
 614         int ret = 0;
 615
 616         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 617
 618         for_each_rtd_components(rtd, rtdcom, component) {
 619                 if (!component->driver->compr_ops ||
 620                     !component->driver->compr_ops->get_caps)
 621                         continue;
 622
 623                 ret = component->driver->compr_ops->get_caps(cstream, caps);
 624                 break;
 625         }
 626
 627         mutex_unlock(&rtd->card->pcm_mutex);
 628         return ret;
 629 }
 630
 631 static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
 632                                     struct snd_compr_codec_caps *codec)
 633 {
 634         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 635         struct snd_soc_component *component;
 636         struct snd_soc_rtdcom_list *rtdcom;
 637         int ret = 0;
 638
 639         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 640
 641         for_each_rtd_components(rtd, rtdcom, component) {
 642                 if (!component->driver->compr_ops ||
 643                     !component->driver->compr_ops->get_codec_caps)
 644                         continue;
 645
 646                 ret = component->driver->compr_ops->get_codec_caps(cstream,
 647                                                                    codec);
 648                 break;
 649         }
 650
 651         mutex_unlock(&rtd->card->pcm_mutex);
 652         return ret;
 653 }
 654
 655 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
 656 {
 657         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 658         struct snd_soc_component *component;
 659         struct snd_soc_rtdcom_list *rtdcom;
 660         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 661         int ret = 0;
 662
 663         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 664
 665         if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) {
 666                 ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai);
 667                 if (ret < 0)
 668                         goto err;
 669         }
 670
 671         for_each_rtd_components(rtd, rtdcom, component) {
 672                 if (!component->driver->compr_ops ||
 673                     !component->driver->compr_ops->ack)
 674                         continue;
 675
 676                 ret = component->driver->compr_ops->ack(cstream, bytes);
 677                 if (ret < 0)
 678                         goto err;
 679         }
 680
 681 err:
 682         mutex_unlock(&rtd->card->pcm_mutex);
 683         return ret;
 684 }
 685
 686 static int soc_compr_pointer(struct snd_compr_stream *cstream,
 687                              struct snd_compr_tstamp *tstamp)
 688 {
 689         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 690         struct snd_soc_component *component;
 691         struct snd_soc_rtdcom_list *rtdcom;
 692         int ret = 0;
 693         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 694
 695         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 696
 697         if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
 698                 cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
 699
 700         for_each_rtd_components(rtd, rtdcom, component) {
 701                 if (!component->driver->compr_ops ||
 702                     !component->driver->compr_ops->pointer)
 703                         continue;
 704
 705                 ret = component->driver->compr_ops->pointer(cstream, tstamp);
 706                 break;
 707         }
 708
 709         mutex_unlock(&rtd->card->pcm_mutex);
 710         return ret;
 711 }
 712
 713 static int soc_compr_copy(struct snd_compr_stream *cstream,
 714                           char __user *buf, size_t count)
 715 {
 716         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 717         struct snd_soc_component *component;
 718         struct snd_soc_rtdcom_list *rtdcom;
 719         int ret = 0;
 720
 721         mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
 722
 723         for_each_rtd_components(rtd, rtdcom, component) {
 724                 if (!component->driver->compr_ops ||
 725                     !component->driver->compr_ops->copy)
 726                         continue;
 727
 728                 ret = component->driver->compr_ops->copy(cstream, buf, count);
 729                 break;
 730         }
 731
 732         mutex_unlock(&rtd->card->pcm_mutex);
 733         return ret;
 734 }
 735
 736 static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
 737                                   struct snd_compr_metadata *metadata)
 738 {
 739         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 740         struct snd_soc_component *component;
 741         struct snd_soc_rtdcom_list *rtdcom;
 742         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 743         int ret;
 744
 745         if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) {
 746                 ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai);
 747                 if (ret < 0)
 748                         return ret;
 749         }
 750
 751         for_each_rtd_components(rtd, rtdcom, component) {
 752                 if (!component->driver->compr_ops ||
 753                     !component->driver->compr_ops->set_metadata)
 754                         continue;
 755
 756                 ret = component->driver->compr_ops->set_metadata(cstream,
 757                                                                  metadata);
 758                 if (ret < 0)
 759                         return ret;
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
 766                                   struct snd_compr_metadata *metadata)
 767 {
 768         struct snd_soc_pcm_runtime *rtd = cstream->private_data;
 769         struct snd_soc_component *component;
 770         struct snd_soc_rtdcom_list *rtdcom;
 771         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 772         int ret;
 773
 774         if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) {
 775                 ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai);
 776                 if (ret < 0)
 777                         return ret;
 778         }
 779
 780         for_each_rtd_components(rtd, rtdcom, component) {
 781                 if (!component->driver->compr_ops ||
 782                     !component->driver->compr_ops->get_metadata)
 783                         continue;
 784
 785                 return component->driver->compr_ops->get_metadata(cstream,
 786                                                                   metadata);
 787         }
 788
 789         return 0;
 790 }
 791
 792 /* ASoC Compress operations */
 793 static struct snd_compr_ops soc_compr_ops = {
 794         .open           = soc_compr_open,
 795         .free           = soc_compr_free,
 796         .set_params     = soc_compr_set_params,
 797         .set_metadata   = soc_compr_set_metadata,
 798         .get_metadata   = soc_compr_get_metadata,
 799         .get_params     = soc_compr_get_params,
 800         .trigger        = soc_compr_trigger,
 801         .pointer        = soc_compr_pointer,
 802         .ack            = soc_compr_ack,
 803         .get_caps       = soc_compr_get_caps,
 804         .get_codec_caps = soc_compr_get_codec_caps
 805 };
 806
 807 /* ASoC Dynamic Compress operations */
 808 static struct snd_compr_ops soc_compr_dyn_ops = {
 809         .open           = soc_compr_open_fe,
 810         .free           = soc_compr_free_fe,
 811         .set_params     = soc_compr_set_params_fe,
 812         .get_params     = soc_compr_get_params,
 813         .set_metadata   = soc_compr_set_metadata,
 814         .get_metadata   = soc_compr_get_metadata,
 815         .trigger        = soc_compr_trigger_fe,
 816         .pointer        = soc_compr_pointer,
 817         .ack            = soc_compr_ack,
 818         .get_caps       = soc_compr_get_caps,
 819         .get_codec_caps = soc_compr_get_codec_caps
 820 };
 821
 822 /**
 823  * snd_soc_new_compress - create a new compress.
 824  *
 825  * @rtd: The runtime for which we will create compress
 826  * @num: the device index number (zero based - shared with normal PCMs)
 827  *
 828  * Return: 0 for success, else error.
 829  */
 830 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
 831 {
 832         struct snd_soc_component *component;
 833         struct snd_soc_rtdcom_list *rtdcom;
 834         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 835         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 836         struct snd_compr *compr;
 837         struct snd_pcm *be_pcm;
 838         char new_name[64];
 839         int ret = 0, direction = 0;
 840         int playback = 0, capture = 0;
 841
 842         if (rtd->num_codecs > 1) {
 843                 dev_err(rtd->card->dev,
 844                         "Compress ASoC: Multicodec not supported\n");
 845                 return -EINVAL;
 846         }
 847
 848         /* check client and interface hw capabilities */
 849         if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
 850             snd_soc_dai_stream_valid(cpu_dai,   SNDRV_PCM_STREAM_PLAYBACK))
 851                 playback = 1;
 852         if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
 853             snd_soc_dai_stream_valid(cpu_dai,   SNDRV_PCM_STREAM_CAPTURE))
 854                 capture = 1;
 855
 856         /*
 857          * Compress devices are unidirectional so only one of the directions
 858          * should be set, check for that (xor)
 859          */
 860         if (playback + capture != 1) {
 861                 dev_err(rtd->card->dev,
 862                         "Compress ASoC: Invalid direction for P %d, C %d\n",
 863                         playback, capture);
 864                 return -EINVAL;
 865         }
 866
 867         if (playback)
 868                 direction = SND_COMPRESS_PLAYBACK;
 869         else
 870                 direction = SND_COMPRESS_CAPTURE;
 871
 872         compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
 873         if (!compr)
 874                 return -ENOMEM;
 875
 876         compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
 877                                   GFP_KERNEL);
 878         if (!compr->ops)
 879                 return -ENOMEM;
 880
 881         if (rtd->dai_link->dynamic) {
 882                 snprintf(new_name, sizeof(new_name), "(%s)",
 883                         rtd->dai_link->stream_name);
 884
 885                 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
 886                                 rtd->dai_link->dpcm_playback,
 887                                 rtd->dai_link->dpcm_capture, &be_pcm);
 888                 if (ret < 0) {
 889                         dev_err(rtd->card->dev,
 890                                 "Compress ASoC: can't create compressed for %s: %d\n",
 891                                 rtd->dai_link->name, ret);
 892                         return ret;
 893                 }
 894
 895                 rtd->pcm = be_pcm;
 896                 rtd->fe_compr = 1;
 897                 if (rtd->dai_link->dpcm_playback)
 898                         be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
 899                 else if (rtd->dai_link->dpcm_capture)
 900                         be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
 901                 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
 902         } else {
 903                 snprintf(new_name, sizeof(new_name), "%s %s-%d",
 904                         rtd->dai_link->stream_name, codec_dai->name, num);
 905
 906                 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
 907         }
 908
 909         for_each_rtd_components(rtd, rtdcom, component) {
 910                 if (!component->driver->compr_ops ||
 911                     !component->driver->compr_ops->copy)
 912                         continue;
 913
 914                 compr->ops->copy = soc_compr_copy;
 915                 break;
 916         }
 917
 918         mutex_init(&compr->lock);
 919         ret = snd_compress_new(rtd->card->snd_card, num, direction,
 920                                 new_name, compr);
 921         if (ret < 0) {
 922                 component = rtd->codec_dai->component;
 923                 dev_err(component->dev,
 924                         "Compress ASoC: can't create compress for codec %s: %d\n",
 925                         component->name, ret);
 926                 return ret;
 927         }
 928
 929         /* DAPM dai link stream work */
 930         rtd->close_delayed_work_func = close_delayed_work;
 931
 932         rtd->compr = compr;
 933         compr->private_data = rtd;
 934
 935         dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
 936                  codec_dai->name, cpu_dai->name);
 937
 938         return 0;
 939 }
 940 EXPORT_SYMBOL_GPL(snd_soc_new_compress);