sound/soc/intel/skylake/skl-pcm.c

   1 /*
   2  *  skl-pcm.c -ASoC HDA Platform driver file implementing PCM functionality
   3  *
   4  *  Copyright (C) 2014-2015 Intel Corp
   5  *  Author:  Jeeja KP <jeeja.kp@intel.com>
   6  *
   7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; version 2 of the License.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but
  14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  General Public License for more details.
  17  *
  18  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  19  *
  20  */
  21
  22 #include <linux/pci.h>
  23 #include <linux/pm_runtime.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include "skl.h"
  27 #include "skl-topology.h"
  28
  29 #define HDA_MONO 1
  30 #define HDA_STEREO 2
  31 #define HDA_QUAD 4
  32
  33 static struct snd_pcm_hardware azx_pcm_hw = {
  34         .info =                 (SNDRV_PCM_INFO_MMAP |
  35                                  SNDRV_PCM_INFO_INTERLEAVED |
  36                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
  37                                  SNDRV_PCM_INFO_MMAP_VALID |
  38                                  SNDRV_PCM_INFO_PAUSE |
  39                                  SNDRV_PCM_INFO_SYNC_START |
  40                                  SNDRV_PCM_INFO_HAS_WALL_CLOCK | /* legacy */
  41                                  SNDRV_PCM_INFO_HAS_LINK_ATIME |
  42                                  SNDRV_PCM_INFO_NO_PERIOD_WAKEUP),
  43         .formats =              SNDRV_PCM_FMTBIT_S16_LE |
  44                                 SNDRV_PCM_FMTBIT_S32_LE |
  45                                 SNDRV_PCM_FMTBIT_S24_LE,
  46         .rates =                SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000 |
  47                                 SNDRV_PCM_RATE_8000,
  48         .rate_min =             8000,
  49         .rate_max =             48000,
  50         .channels_min =         1,
  51         .channels_max =         HDA_QUAD,
  52         .buffer_bytes_max =     AZX_MAX_BUF_SIZE,
  53         .period_bytes_min =     128,
  54         .period_bytes_max =     AZX_MAX_BUF_SIZE / 2,
  55         .periods_min =          2,
  56         .periods_max =          AZX_MAX_FRAG,
  57         .fifo_size =            0,
  58 };
  59
  60 static inline
  61 struct hdac_ext_stream *get_hdac_ext_stream(struct snd_pcm_substream *substream)
  62 {
  63         return substream->runtime->private_data;
  64 }
  65
  66 static struct hdac_ext_bus *get_bus_ctx(struct snd_pcm_substream *substream)
  67 {
  68         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
  69         struct hdac_stream *hstream = hdac_stream(stream);
  70         struct hdac_bus *bus = hstream->bus;
  71
  72         return hbus_to_ebus(bus);
  73 }
  74
  75 static int skl_substream_alloc_pages(struct hdac_ext_bus *ebus,
  76                                  struct snd_pcm_substream *substream,
  77                                  size_t size)
  78 {
  79         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
  80
  81         hdac_stream(stream)->bufsize = 0;
  82         hdac_stream(stream)->period_bytes = 0;
  83         hdac_stream(stream)->format_val = 0;
  84
  85         return snd_pcm_lib_malloc_pages(substream, size);
  86 }
  87
  88 static int skl_substream_free_pages(struct hdac_bus *bus,
  89                                 struct snd_pcm_substream *substream)
  90 {
  91         return snd_pcm_lib_free_pages(substream);
  92 }
  93
  94 static void skl_set_pcm_constrains(struct hdac_ext_bus *ebus,
  95                                  struct snd_pcm_runtime *runtime)
  96 {
  97         snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
  98
  99         /* avoid wrap-around with wall-clock */
 100         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_TIME,
 101                                      20, 178000000);
 102 }
 103
 104 static enum hdac_ext_stream_type skl_get_host_stream_type(struct hdac_ext_bus *ebus)
 105 {
 106         if (ebus->ppcap)
 107                 return HDAC_EXT_STREAM_TYPE_HOST;
 108         else
 109                 return HDAC_EXT_STREAM_TYPE_COUPLED;
 110 }
 111
 112 /*
 113  * check if the stream opened is marked as ignore_suspend by machine, if so
 114  * then enable suspend_active refcount
 115  *
 116  * The count supend_active does not need lock as it is used in open/close
 117  * and suspend context
 118  */
 119 static void skl_set_suspend_active(struct snd_pcm_substream *substream,
 120                                          struct snd_soc_dai *dai, bool enable)
 121 {
 122         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 123         struct snd_soc_dapm_widget *w;
 124         struct skl *skl = ebus_to_skl(ebus);
 125
 126         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 127                 w = dai->playback_widget;
 128         else
 129                 w = dai->capture_widget;
 130
 131         if (w->ignore_suspend && enable)
 132                 skl->supend_active++;
 133         else if (w->ignore_suspend && !enable)
 134                 skl->supend_active--;
 135 }
 136
 137 static int skl_pcm_open(struct snd_pcm_substream *substream,
 138                 struct snd_soc_dai *dai)
 139 {
 140         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 141         struct hdac_ext_stream *stream;
 142         struct snd_pcm_runtime *runtime = substream->runtime;
 143         struct skl_dma_params *dma_params;
 144
 145         dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
 146
 147         stream = snd_hdac_ext_stream_assign(ebus, substream,
 148                                         skl_get_host_stream_type(ebus));
 149         if (stream == NULL)
 150                 return -EBUSY;
 151
 152         skl_set_pcm_constrains(ebus, runtime);
 153
 154         /*
 155          * disable WALLCLOCK timestamps for capture streams
 156          * until we figure out how to handle digital inputs
 157          */
 158         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 159                 runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; /* legacy */
 160                 runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_LINK_ATIME;
 161         }
 162
 163         runtime->private_data = stream;
 164
 165         dma_params = kzalloc(sizeof(*dma_params), GFP_KERNEL);
 166         if (!dma_params)
 167                 return -ENOMEM;
 168
 169         dma_params->stream_tag = hdac_stream(stream)->stream_tag;
 170         snd_soc_dai_set_dma_data(dai, substream, dma_params);
 171
 172         dev_dbg(dai->dev, "stream tag set in dma params=%d\n",
 173                                  dma_params->stream_tag);
 174         skl_set_suspend_active(substream, dai, true);
 175         snd_pcm_set_sync(substream);
 176
 177         return 0;
 178 }
 179
 180 static int skl_get_format(struct snd_pcm_substream *substream,
 181                 struct snd_soc_dai *dai)
 182 {
 183         struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
 184         struct skl_dma_params *dma_params;
 185         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 186         int format_val = 0;
 187
 188         if (ebus->ppcap) {
 189                 struct snd_pcm_runtime *runtime = substream->runtime;
 190
 191                 format_val = snd_hdac_calc_stream_format(runtime->rate,
 192                                                 runtime->channels,
 193                                                 runtime->format,
 194                                                 32, 0);
 195         } else {
 196                 struct snd_soc_dai *codec_dai = rtd->codec_dai;
 197
 198                 dma_params = snd_soc_dai_get_dma_data(codec_dai, substream);
 199                 if (dma_params)
 200                         format_val = dma_params->format;
 201         }
 202
 203         return format_val;
 204 }
 205
 206 static int skl_pcm_prepare(struct snd_pcm_substream *substream,
 207                 struct snd_soc_dai *dai)
 208 {
 209         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
 210         unsigned int format_val;
 211         int err;
 212
 213         dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
 214
 215         format_val = skl_get_format(substream, dai);
 216         dev_dbg(dai->dev, "stream_tag=%d formatvalue=%d\n",
 217                                 hdac_stream(stream)->stream_tag, format_val);
 218         snd_hdac_stream_reset(hdac_stream(stream));
 219
 220         err = snd_hdac_stream_set_params(hdac_stream(stream), format_val);
 221         if (err < 0)
 222                 return err;
 223
 224         err = snd_hdac_stream_setup(hdac_stream(stream));
 225         if (err < 0)
 226                 return err;
 227
 228         hdac_stream(stream)->prepared = 1;
 229
 230         return err;
 231 }
 232
 233 static int skl_pcm_hw_params(struct snd_pcm_substream *substream,
 234                                 struct snd_pcm_hw_params *params,
 235                                 struct snd_soc_dai *dai)
 236 {
 237         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 238         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
 239         struct snd_pcm_runtime *runtime = substream->runtime;
 240         struct skl_pipe_params p_params = {0};
 241         struct skl_module_cfg *m_cfg;
 242         int ret, dma_id;
 243
 244         dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
 245         ret = skl_substream_alloc_pages(ebus, substream,
 246                                           params_buffer_bytes(params));
 247         if (ret < 0)
 248                 return ret;
 249
 250         dev_dbg(dai->dev, "format_val, rate=%d, ch=%d, format=%d\n",
 251                         runtime->rate, runtime->channels, runtime->format);
 252
 253         dma_id = hdac_stream(stream)->stream_tag - 1;
 254         dev_dbg(dai->dev, "dma_id=%d\n", dma_id);
 255
 256         p_params.s_fmt = snd_pcm_format_width(params_format(params));
 257         p_params.ch = params_channels(params);
 258         p_params.s_freq = params_rate(params);
 259         p_params.host_dma_id = dma_id;
 260         p_params.stream = substream->stream;
 261
 262         m_cfg = skl_tplg_fe_get_cpr_module(dai, p_params.stream);
 263         if (m_cfg)
 264                 skl_tplg_update_pipe_params(dai->dev, m_cfg, &p_params);
 265
 266         return 0;
 267 }
 268
 269 static void skl_pcm_close(struct snd_pcm_substream *substream,
 270                 struct snd_soc_dai *dai)
 271 {
 272         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
 273         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 274         struct skl_dma_params *dma_params = NULL;
 275
 276         dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
 277
 278         snd_hdac_ext_stream_release(stream, skl_get_host_stream_type(ebus));
 279
 280         dma_params = snd_soc_dai_get_dma_data(dai, substream);
 281         /*
 282          * now we should set this to NULL as we are freeing by the
 283          * dma_params
 284          */
 285         snd_soc_dai_set_dma_data(dai, substream, NULL);
 286         skl_set_suspend_active(substream, dai, false);
 287
 288         kfree(dma_params);
 289 }
 290
 291 static int skl_pcm_hw_free(struct snd_pcm_substream *substream,
 292                 struct snd_soc_dai *dai)
 293 {
 294         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 295         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
 296
 297         dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
 298
 299         snd_hdac_stream_cleanup(hdac_stream(stream));
 300         hdac_stream(stream)->prepared = 0;
 301
 302         return skl_substream_free_pages(ebus_to_hbus(ebus), substream);
 303 }
 304
 305 static int skl_be_hw_params(struct snd_pcm_substream *substream,
 306                                 struct snd_pcm_hw_params *params,
 307                                 struct snd_soc_dai *dai)
 308 {
 309         struct skl_pipe_params p_params = {0};
 310
 311         p_params.s_fmt = snd_pcm_format_width(params_format(params));
 312         p_params.ch = params_channels(params);
 313         p_params.s_freq = params_rate(params);
 314         p_params.stream = substream->stream;
 315
 316         return skl_tplg_be_update_params(dai, &p_params);
 317 }
 318
 319 static int skl_decoupled_trigger(struct snd_pcm_substream *substream,
 320                 int cmd)
 321 {
 322         struct hdac_ext_bus *ebus = get_bus_ctx(substream);
 323         struct hdac_bus *bus = ebus_to_hbus(ebus);
 324         struct hdac_ext_stream *stream;
 325         int start;
 326         unsigned long cookie;
 327         struct hdac_stream *hstr;
 328
 329         stream = get_hdac_ext_stream(substream);
 330         hstr = hdac_stream(stream);
 331
 332         if (!hstr->prepared)
 333                 return -EPIPE;
 334
 335         switch (cmd) {
 336         case SNDRV_PCM_TRIGGER_START:
 337         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 338         case SNDRV_PCM_TRIGGER_RESUME:
 339                 start = 1;
 340                 break;
 341
 342         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 343         case SNDRV_PCM_TRIGGER_SUSPEND:
 344         case SNDRV_PCM_TRIGGER_STOP:
 345                 start = 0;
 346                 break;
 347
 348         default:
 349                 return -EINVAL;
 350         }
 351
 352         spin_lock_irqsave(&bus->reg_lock, cookie);
 353
 354         if (start) {
 355                 snd_hdac_stream_start(hdac_stream(stream), true);
 356                 snd_hdac_stream_timecounter_init(hstr, 0);
 357         } else {
 358                 snd_hdac_stream_stop(hdac_stream(stream));
 359         }
 360
 361         spin_unlock_irqrestore(&bus->reg_lock, cookie);
 362
 363         return 0;
 364 }
 365
 366 static int skl_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
 367                 struct snd_soc_dai *dai)
 368 {
 369         struct skl *skl = get_skl_ctx(dai->dev);
 370         struct skl_sst *ctx = skl->skl_sst;
 371         struct skl_module_cfg *mconfig;
 372         struct hdac_ext_bus *ebus = get_bus_ctx(substream);
 373         struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
 374         int ret;
 375
 376         mconfig = skl_tplg_fe_get_cpr_module(dai, substream->stream);
 377         if (!mconfig)
 378                 return -EIO;
 379
 380         switch (cmd) {
 381         case SNDRV_PCM_TRIGGER_RESUME:
 382                 skl_pcm_prepare(substream, dai);
 383         case SNDRV_PCM_TRIGGER_START:
 384         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 385                 /*
 386                  * Start HOST DMA and Start FE Pipe.This is to make sure that
 387                  * there are no underrun/overrun in the case when the FE
 388                  * pipeline is started but there is a delay in starting the
 389                  * DMA channel on the host.
 390                  */
 391                 snd_hdac_ext_stream_decouple(ebus, stream, true);
 392                 ret = skl_decoupled_trigger(substream, cmd);
 393                 if (ret < 0)
 394                         return ret;
 395                 return skl_run_pipe(ctx, mconfig->pipe);
 396                 break;
 397
 398         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 399         case SNDRV_PCM_TRIGGER_SUSPEND:
 400         case SNDRV_PCM_TRIGGER_STOP:
 401                 /*
 402                  * Stop FE Pipe first and stop DMA. This is to make sure that
 403                  * there are no underrun/overrun in the case if there is a delay
 404                  * between the two operations.
 405                  */
 406                 ret = skl_stop_pipe(ctx, mconfig->pipe);
 407                 if (ret < 0)
 408                         return ret;
 409
 410                 ret = skl_decoupled_trigger(substream, cmd);
 411                 if (cmd == SNDRV_PCM_TRIGGER_SUSPEND)
 412                         snd_hdac_ext_stream_decouple(ebus, stream, false);
 413                 break;
 414
 415         default:
 416                 return -EINVAL;
 417         }
 418
 419         return 0;
 420 }
 421
 422 static int skl_link_hw_params(struct snd_pcm_substream *substream,
 423                                 struct snd_pcm_hw_params *params,
 424                                 struct snd_soc_dai *dai)
 425 {
 426         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 427         struct hdac_ext_stream *link_dev;
 428         struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
 429         struct skl_dma_params *dma_params;
 430         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 431         struct skl_pipe_params p_params = {0};
 432
 433         link_dev = snd_hdac_ext_stream_assign(ebus, substream,
 434                                         HDAC_EXT_STREAM_TYPE_LINK);
 435         if (!link_dev)
 436                 return -EBUSY;
 437
 438         snd_soc_dai_set_dma_data(dai, substream, (void *)link_dev);
 439
 440         /* set the stream tag in the codec dai dma params  */
 441         dma_params = (struct skl_dma_params *)
 442                         snd_soc_dai_get_dma_data(codec_dai, substream);
 443         if (dma_params)
 444                 dma_params->stream_tag =  hdac_stream(link_dev)->stream_tag;
 445         snd_soc_dai_set_dma_data(codec_dai, substream, (void *)dma_params);
 446
 447         p_params.s_fmt = snd_pcm_format_width(params_format(params));
 448         p_params.ch = params_channels(params);
 449         p_params.s_freq = params_rate(params);
 450         p_params.stream = substream->stream;
 451         p_params.link_dma_id = hdac_stream(link_dev)->stream_tag - 1;
 452
 453         return skl_tplg_be_update_params(dai, &p_params);
 454 }
 455
 456 static int skl_link_pcm_prepare(struct snd_pcm_substream *substream,
 457                 struct snd_soc_dai *dai)
 458 {
 459         struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
 460         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 461         struct hdac_ext_stream *link_dev =
 462                         snd_soc_dai_get_dma_data(dai, substream);
 463         unsigned int format_val = 0;
 464         struct skl_dma_params *dma_params;
 465         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 466         struct hdac_ext_link *link;
 467
 468         if (link_dev->link_prepared) {
 469                 dev_dbg(dai->dev, "already stream is prepared - returning\n");
 470                 return 0;
 471         }
 472
 473         dma_params  = (struct skl_dma_params *)
 474                         snd_soc_dai_get_dma_data(codec_dai, substream);
 475         if (dma_params)
 476                 format_val = dma_params->format;
 477         dev_dbg(dai->dev, "stream_tag=%d formatvalue=%d codec_dai_name=%s\n",
 478                         hdac_stream(link_dev)->stream_tag, format_val, codec_dai->name);
 479
 480         snd_hdac_ext_link_stream_reset(link_dev);
 481
 482         snd_hdac_ext_link_stream_setup(link_dev, format_val);
 483
 484         link = snd_hdac_ext_bus_get_link(ebus, rtd->codec->component.name);
 485         if (!link)
 486                 return -EINVAL;
 487
 488         snd_hdac_ext_link_set_stream_id(link, hdac_stream(link_dev)->stream_tag);
 489         link_dev->link_prepared = 1;
 490
 491         return 0;
 492 }
 493
 494 static int skl_link_pcm_trigger(struct snd_pcm_substream *substream,
 495         int cmd, struct snd_soc_dai *dai)
 496 {
 497         struct hdac_ext_stream *link_dev =
 498                                 snd_soc_dai_get_dma_data(dai, substream);
 499
 500         dev_dbg(dai->dev, "In %s cmd=%d\n", __func__, cmd);
 501         switch (cmd) {
 502         case SNDRV_PCM_TRIGGER_START:
 503         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 504         case SNDRV_PCM_TRIGGER_RESUME:
 505                 snd_hdac_ext_link_stream_start(link_dev);
 506                 break;
 507
 508         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 509         case SNDRV_PCM_TRIGGER_SUSPEND:
 510         case SNDRV_PCM_TRIGGER_STOP:
 511                 snd_hdac_ext_link_stream_clear(link_dev);
 512                 break;
 513
 514         default:
 515                 return -EINVAL;
 516         }
 517         return 0;
 518 }
 519
 520 static int skl_link_hw_free(struct snd_pcm_substream *substream,
 521                 struct snd_soc_dai *dai)
 522 {
 523         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 524         struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
 525         struct hdac_ext_stream *link_dev =
 526                                 snd_soc_dai_get_dma_data(dai, substream);
 527         struct hdac_ext_link *link;
 528
 529         dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
 530
 531         link_dev->link_prepared = 0;
 532
 533         link = snd_hdac_ext_bus_get_link(ebus, rtd->codec->component.name);
 534         if (!link)
 535                 return -EINVAL;
 536
 537         snd_hdac_ext_link_clear_stream_id(link, hdac_stream(link_dev)->stream_tag);
 538         snd_hdac_ext_stream_release(link_dev, HDAC_EXT_STREAM_TYPE_LINK);
 539         return 0;
 540 }
 541
 542 static struct snd_soc_dai_ops skl_pcm_dai_ops = {
 543         .startup = skl_pcm_open,
 544         .shutdown = skl_pcm_close,
 545         .prepare = skl_pcm_prepare,
 546         .hw_params = skl_pcm_hw_params,
 547         .hw_free = skl_pcm_hw_free,
 548         .trigger = skl_pcm_trigger,
 549 };
 550
 551 static struct snd_soc_dai_ops skl_dmic_dai_ops = {
 552         .hw_params = skl_be_hw_params,
 553 };
 554
 555 static struct snd_soc_dai_ops skl_be_ssp_dai_ops = {
 556         .hw_params = skl_be_hw_params,
 557 };
 558
 559 static struct snd_soc_dai_ops skl_link_dai_ops = {
 560         .prepare = skl_link_pcm_prepare,
 561         .hw_params = skl_link_hw_params,
 562         .hw_free = skl_link_hw_free,
 563         .trigger = skl_link_pcm_trigger,
 564 };
 565
 566 static struct snd_soc_dai_driver skl_platform_dai[] = {
 567 {
 568         .name = "System Pin",
 569         .ops = &skl_pcm_dai_ops,
 570         .playback = {
 571                 .stream_name = "System Playback",
 572                 .channels_min = HDA_MONO,
 573                 .channels_max = HDA_STEREO,
 574                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_8000,
 575                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 576         },
 577         .capture = {
 578                 .stream_name = "System Capture",
 579                 .channels_min = HDA_MONO,
 580                 .channels_max = HDA_STEREO,
 581                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
 582                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 583         },
 584 },
 585 {
 586         .name = "Reference Pin",
 587         .ops = &skl_pcm_dai_ops,
 588         .capture = {
 589                 .stream_name = "Reference Capture",
 590                 .channels_min = HDA_MONO,
 591                 .channels_max = HDA_QUAD,
 592                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
 593                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 594         },
 595 },
 596 {
 597         .name = "Deepbuffer Pin",
 598         .ops = &skl_pcm_dai_ops,
 599         .playback = {
 600                 .stream_name = "Deepbuffer Playback",
 601                 .channels_min = HDA_STEREO,
 602                 .channels_max = HDA_STEREO,
 603                 .rates = SNDRV_PCM_RATE_48000,
 604                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 605         },
 606 },
 607 {
 608         .name = "LowLatency Pin",
 609         .ops = &skl_pcm_dai_ops,
 610         .playback = {
 611                 .stream_name = "Low Latency Playback",
 612                 .channels_min = HDA_STEREO,
 613                 .channels_max = HDA_STEREO,
 614                 .rates = SNDRV_PCM_RATE_48000,
 615                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 616         },
 617 },
 618 {
 619         .name = "DMIC Pin",
 620         .ops = &skl_pcm_dai_ops,
 621         .capture = {
 622                 .stream_name = "DMIC Capture",
 623                 .channels_min = HDA_MONO,
 624                 .channels_max = HDA_QUAD,
 625                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
 626                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 627         },
 628 },
 629
 630 /* BE CPU  Dais */
 631 {
 632         .name = "SSP0 Pin",
 633         .ops = &skl_be_ssp_dai_ops,
 634         .playback = {
 635                 .stream_name = "ssp0 Tx",
 636                 .channels_min = HDA_STEREO,
 637                 .channels_max = HDA_STEREO,
 638                 .rates = SNDRV_PCM_RATE_48000,
 639                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 640         },
 641         .capture = {
 642                 .stream_name = "ssp0 Rx",
 643                 .channels_min = HDA_STEREO,
 644                 .channels_max = HDA_STEREO,
 645                 .rates = SNDRV_PCM_RATE_48000,
 646                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 647         },
 648 },
 649 {
 650         .name = "SSP1 Pin",
 651         .ops = &skl_be_ssp_dai_ops,
 652         .playback = {
 653                 .stream_name = "ssp1 Tx",
 654                 .channels_min = HDA_STEREO,
 655                 .channels_max = HDA_STEREO,
 656                 .rates = SNDRV_PCM_RATE_48000,
 657                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 658         },
 659         .capture = {
 660                 .stream_name = "ssp1 Rx",
 661                 .channels_min = HDA_STEREO,
 662                 .channels_max = HDA_STEREO,
 663                 .rates = SNDRV_PCM_RATE_48000,
 664                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 665         },
 666 },
 667 {
 668         .name = "iDisp Pin",
 669         .ops = &skl_link_dai_ops,
 670         .playback = {
 671                 .stream_name = "iDisp Tx",
 672                 .channels_min = HDA_STEREO,
 673                 .channels_max = HDA_STEREO,
 674                 .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
 675                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 676         },
 677 },
 678 {
 679         .name = "DMIC01 Pin",
 680         .ops = &skl_dmic_dai_ops,
 681         .capture = {
 682                 .stream_name = "DMIC01 Rx",
 683                 .channels_min = HDA_MONO,
 684                 .channels_max = HDA_QUAD,
 685                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
 686                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 687         },
 688 },
 689 {
 690         .name = "HD-Codec Pin",
 691         .ops = &skl_link_dai_ops,
 692         .playback = {
 693                 .stream_name = "HD-Codec Tx",
 694                 .channels_min = HDA_STEREO,
 695                 .channels_max = HDA_STEREO,
 696                 .rates = SNDRV_PCM_RATE_48000,
 697                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 698         },
 699         .capture = {
 700                 .stream_name = "HD-Codec Rx",
 701                 .channels_min = HDA_STEREO,
 702                 .channels_max = HDA_STEREO,
 703                 .rates = SNDRV_PCM_RATE_48000,
 704                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 705         },
 706 },
 707 };
 708
 709 static int skl_platform_open(struct snd_pcm_substream *substream)
 710 {
 711         struct snd_pcm_runtime *runtime;
 712         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 713         struct snd_soc_dai_link *dai_link = rtd->dai_link;
 714
 715         dev_dbg(rtd->cpu_dai->dev, "In %s:%s\n", __func__,
 716                                         dai_link->cpu_dai_name);
 717
 718         runtime = substream->runtime;
 719         snd_soc_set_runtime_hwparams(substream, &azx_pcm_hw);
 720
 721         return 0;
 722 }
 723
 724 static int skl_coupled_trigger(struct snd_pcm_substream *substream,
 725                                         int cmd)
 726 {
 727         struct hdac_ext_bus *ebus = get_bus_ctx(substream);
 728         struct hdac_bus *bus = ebus_to_hbus(ebus);
 729         struct hdac_ext_stream *stream;
 730         struct snd_pcm_substream *s;
 731         bool start;
 732         int sbits = 0;
 733         unsigned long cookie;
 734         struct hdac_stream *hstr;
 735
 736         stream = get_hdac_ext_stream(substream);
 737         hstr = hdac_stream(stream);
 738
 739         dev_dbg(bus->dev, "In %s cmd=%d\n", __func__, cmd);
 740
 741         if (!hstr->prepared)
 742                 return -EPIPE;
 743
 744         switch (cmd) {
 745         case SNDRV_PCM_TRIGGER_START:
 746         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 747         case SNDRV_PCM_TRIGGER_RESUME:
 748                 start = true;
 749                 break;
 750
 751         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 752         case SNDRV_PCM_TRIGGER_SUSPEND:
 753         case SNDRV_PCM_TRIGGER_STOP:
 754                 start = false;
 755                 break;
 756
 757         default:
 758                 return -EINVAL;
 759         }
 760
 761         snd_pcm_group_for_each_entry(s, substream) {
 762                 if (s->pcm->card != substream->pcm->card)
 763                         continue;
 764                 stream = get_hdac_ext_stream(s);
 765                 sbits |= 1 << hdac_stream(stream)->index;
 766                 snd_pcm_trigger_done(s, substream);
 767         }
 768
 769         spin_lock_irqsave(&bus->reg_lock, cookie);
 770
 771         /* first, set SYNC bits of corresponding streams */
 772         snd_hdac_stream_sync_trigger(hstr, true, sbits, AZX_REG_SSYNC);
 773
 774         snd_pcm_group_for_each_entry(s, substream) {
 775                 if (s->pcm->card != substream->pcm->card)
 776                         continue;
 777                 stream = get_hdac_ext_stream(s);
 778                 if (start)
 779                         snd_hdac_stream_start(hdac_stream(stream), true);
 780                 else
 781                         snd_hdac_stream_stop(hdac_stream(stream));
 782         }
 783         spin_unlock_irqrestore(&bus->reg_lock, cookie);
 784
 785         snd_hdac_stream_sync(hstr, start, sbits);
 786
 787         spin_lock_irqsave(&bus->reg_lock, cookie);
 788
 789         /* reset SYNC bits */
 790         snd_hdac_stream_sync_trigger(hstr, false, sbits, AZX_REG_SSYNC);
 791         if (start)
 792                 snd_hdac_stream_timecounter_init(hstr, sbits);
 793         spin_unlock_irqrestore(&bus->reg_lock, cookie);
 794
 795         return 0;
 796 }
 797
 798 static int skl_platform_pcm_trigger(struct snd_pcm_substream *substream,
 799                                         int cmd)
 800 {
 801         struct hdac_ext_bus *ebus = get_bus_ctx(substream);
 802
 803         if (!ebus->ppcap)
 804                 return skl_coupled_trigger(substream, cmd);
 805
 806         return 0;
 807 }
 808
 809 /* calculate runtime delay from LPIB */
 810 static int skl_get_delay_from_lpib(struct hdac_ext_bus *ebus,
 811                                 struct hdac_ext_stream *sstream,
 812                                 unsigned int pos)
 813 {
 814         struct hdac_bus *bus = ebus_to_hbus(ebus);
 815         struct hdac_stream *hstream = hdac_stream(sstream);
 816         struct snd_pcm_substream *substream = hstream->substream;
 817         int stream = substream->stream;
 818         unsigned int lpib_pos = snd_hdac_stream_get_pos_lpib(hstream);
 819         int delay;
 820
 821         if (stream == SNDRV_PCM_STREAM_PLAYBACK)
 822                 delay = pos - lpib_pos;
 823         else
 824                 delay = lpib_pos - pos;
 825
 826         if (delay < 0) {
 827                 if (delay >= hstream->delay_negative_threshold)
 828                         delay = 0;
 829                 else
 830                         delay += hstream->bufsize;
 831         }
 832
 833         if (delay >= hstream->period_bytes) {
 834                 dev_info(bus->dev,
 835                          "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
 836                          delay, hstream->period_bytes);
 837                 delay = 0;
 838         }
 839
 840         return bytes_to_frames(substream->runtime, delay);
 841 }
 842
 843 static unsigned int skl_get_position(struct hdac_ext_stream *hstream,
 844                                         int codec_delay)
 845 {
 846         struct hdac_stream *hstr = hdac_stream(hstream);
 847         struct snd_pcm_substream *substream = hstr->substream;
 848         struct hdac_ext_bus *ebus;
 849         unsigned int pos;
 850         int delay;
 851
 852         /* use the position buffer as default */
 853         pos = snd_hdac_stream_get_pos_posbuf(hdac_stream(hstream));
 854
 855         if (pos >= hdac_stream(hstream)->bufsize)
 856                 pos = 0;
 857
 858         if (substream->runtime) {
 859                 ebus = get_bus_ctx(substream);
 860                 delay = skl_get_delay_from_lpib(ebus, hstream, pos)
 861                                                  + codec_delay;
 862                 substream->runtime->delay += delay;
 863         }
 864
 865         return pos;
 866 }
 867
 868 static snd_pcm_uframes_t skl_platform_pcm_pointer
 869                         (struct snd_pcm_substream *substream)
 870 {
 871         struct hdac_ext_stream *hstream = get_hdac_ext_stream(substream);
 872
 873         return bytes_to_frames(substream->runtime,
 874                                skl_get_position(hstream, 0));
 875 }
 876
 877 static u64 skl_adjust_codec_delay(struct snd_pcm_substream *substream,
 878                                 u64 nsec)
 879 {
 880         struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
 881         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 882         u64 codec_frames, codec_nsecs;
 883
 884         if (!codec_dai->driver->ops->delay)
 885                 return nsec;
 886
 887         codec_frames = codec_dai->driver->ops->delay(substream, codec_dai);
 888         codec_nsecs = div_u64(codec_frames * 1000000000LL,
 889                               substream->runtime->rate);
 890
 891         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 892                 return nsec + codec_nsecs;
 893
 894         return (nsec > codec_nsecs) ? nsec - codec_nsecs : 0;
 895 }
 896
 897 static int skl_get_time_info(struct snd_pcm_substream *substream,
 898                         struct timespec *system_ts, struct timespec *audio_ts,
 899                         struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
 900                         struct snd_pcm_audio_tstamp_report *audio_tstamp_report)
 901 {
 902         struct hdac_ext_stream *sstream = get_hdac_ext_stream(substream);
 903         struct hdac_stream *hstr = hdac_stream(sstream);
 904         u64 nsec;
 905
 906         if ((substream->runtime->hw.info & SNDRV_PCM_INFO_HAS_LINK_ATIME) &&
 907                 (audio_tstamp_config->type_requested == SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK)) {
 908
 909                 snd_pcm_gettime(substream->runtime, system_ts);
 910
 911                 nsec = timecounter_read(&hstr->tc);
 912                 nsec = div_u64(nsec, 3); /* can be optimized */
 913                 if (audio_tstamp_config->report_delay)
 914                         nsec = skl_adjust_codec_delay(substream, nsec);
 915
 916                 *audio_ts = ns_to_timespec(nsec);
 917
 918                 audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK;
 919                 audio_tstamp_report->accuracy_report = 1; /* rest of struct is valid */
 920                 audio_tstamp_report->accuracy = 42; /* 24MHzWallClk == 42ns resolution */
 921
 922         } else {
 923                 audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT;
 924         }
 925
 926         return 0;
 927 }
 928
 929 static struct snd_pcm_ops skl_platform_ops = {
 930         .open = skl_platform_open,
 931         .ioctl = snd_pcm_lib_ioctl,
 932         .trigger = skl_platform_pcm_trigger,
 933         .pointer = skl_platform_pcm_pointer,
 934         .get_time_info =  skl_get_time_info,
 935         .mmap = snd_pcm_lib_default_mmap,
 936         .page = snd_pcm_sgbuf_ops_page,
 937 };
 938
 939 static void skl_pcm_free(struct snd_pcm *pcm)
 940 {
 941         snd_pcm_lib_preallocate_free_for_all(pcm);
 942 }
 943
 944 #define MAX_PREALLOC_SIZE       (32 * 1024 * 1024)
 945
 946 static int skl_pcm_new(struct snd_soc_pcm_runtime *rtd)
 947 {
 948         struct snd_soc_dai *dai = rtd->cpu_dai;
 949         struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
 950         struct snd_pcm *pcm = rtd->pcm;
 951         unsigned int size;
 952         int retval = 0;
 953         struct skl *skl = ebus_to_skl(ebus);
 954
 955         if (dai->driver->playback.channels_min ||
 956                 dai->driver->capture.channels_min) {
 957                 /* buffer pre-allocation */
 958                 size = CONFIG_SND_HDA_PREALLOC_SIZE * 1024;
 959                 if (size > MAX_PREALLOC_SIZE)
 960                         size = MAX_PREALLOC_SIZE;
 961                 retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
 962                                                 SNDRV_DMA_TYPE_DEV_SG,
 963                                                 snd_dma_pci_data(skl->pci),
 964                                                 size, MAX_PREALLOC_SIZE);
 965                 if (retval) {
 966                         dev_err(dai->dev, "dma buffer allocationf fail\n");
 967                         return retval;
 968                 }
 969         }
 970
 971         return retval;
 972 }
 973
 974 static int skl_platform_soc_probe(struct snd_soc_platform *platform)
 975 {
 976         struct hdac_ext_bus *ebus = dev_get_drvdata(platform->dev);
 977
 978         if (ebus->ppcap)
 979                 return skl_tplg_init(platform, ebus);
 980
 981         return 0;
 982 }
 983 static struct snd_soc_platform_driver skl_platform_drv  = {
 984         .probe          = skl_platform_soc_probe,
 985         .ops            = &skl_platform_ops,
 986         .pcm_new        = skl_pcm_new,
 987         .pcm_free       = skl_pcm_free,
 988 };
 989
 990 static const struct snd_soc_component_driver skl_component = {
 991         .name           = "pcm",
 992 };
 993
 994 int skl_platform_register(struct device *dev)
 995 {
 996         int ret;
 997         struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
 998         struct skl *skl = ebus_to_skl(ebus);
 999
1000         INIT_LIST_HEAD(&skl->ppl_list);
1001
1002         ret = snd_soc_register_platform(dev, &skl_platform_drv);
1003         if (ret) {
1004                 dev_err(dev, "soc platform registration failed %d\n", ret);
1005                 return ret;
1006         }
1007         ret = snd_soc_register_component(dev, &skl_component,
1008                                 skl_platform_dai,
1009                                 ARRAY_SIZE(skl_platform_dai));
1010         if (ret) {
1011                 dev_err(dev, "soc component registration failed %d\n", ret);
1012                 snd_soc_unregister_platform(dev);
1013         }
1014
1015         return ret;
1016
1017 }
1018
1019 int skl_platform_unregister(struct device *dev)
1020 {
1021         snd_soc_unregister_component(dev);
1022         snd_soc_unregister_platform(dev);
1023         return 0;
1024 }