sound/soc/sh/rcar/core.c

   1 /*
   2  * Renesas R-Car SRU/SCU/SSIU/SSI support
   3  *
   4  * Copyright (C) 2013 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * Based on fsi.c
   8  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 /*
  16  * Renesas R-Car sound device structure
  17  *
  18  * Gen1
  19  *
  20  * SRU          : Sound Routing Unit
  21  *  - SRC       : Sampling Rate Converter
  22  *  - CMD
  23  *    - CTU     : Channel Count Conversion Unit
  24  *    - MIX     : Mixer
  25  *    - DVC     : Digital Volume and Mute Function
  26  *  - SSI       : Serial Sound Interface
  27  *
  28  * Gen2
  29  *
  30  * SCU          : Sampling Rate Converter Unit
  31  *  - SRC       : Sampling Rate Converter
  32  *  - CMD
  33  *   - CTU      : Channel Count Conversion Unit
  34  *   - MIX      : Mixer
  35  *   - DVC      : Digital Volume and Mute Function
  36  * SSIU         : Serial Sound Interface Unit
  37  *  - SSI       : Serial Sound Interface
  38  */
  39
  40 /*
  41  *      driver data Image
  42  *
  43  * rsnd_priv
  44  *   |
  45  *   | ** this depends on Gen1/Gen2
  46  *   |
  47  *   +- gen
  48  *   |
  49  *   | ** these depend on data path
  50  *   | ** gen and platform data control it
  51  *   |
  52  *   +- rdai[0]
  53  *   |   |               sru     ssiu      ssi
  54  *   |   +- playback -> [mod] -> [mod] -> [mod] -> ...
  55  *   |   |
  56  *   |   |               sru     ssiu      ssi
  57  *   |   +- capture  -> [mod] -> [mod] -> [mod] -> ...
  58  *   |
  59  *   +- rdai[1]
  60  *   |   |               sru     ssiu      ssi
  61  *   |   +- playback -> [mod] -> [mod] -> [mod] -> ...
  62  *   |   |
  63  *   |   |               sru     ssiu      ssi
  64  *   |   +- capture  -> [mod] -> [mod] -> [mod] -> ...
  65  *   ...
  66  *   |
  67  *   | ** these control ssi
  68  *   |
  69  *   +- ssi
  70  *   |  |
  71  *   |  +- ssi[0]
  72  *   |  +- ssi[1]
  73  *   |  +- ssi[2]
  74  *   |  ...
  75  *   |
  76  *   | ** these control scu
  77  *   |
  78  *   +- scu
  79  *      |
  80  *      +- scu[0]
  81  *      +- scu[1]
  82  *      +- scu[2]
  83  *      ...
  84  *
  85  *
  86  * for_each_rsnd_dai(xx, priv, xx)
  87  *  rdai[0] => rdai[1] => rdai[2] => ...
  88  *
  89  * for_each_rsnd_mod(xx, rdai, xx)
  90  *  [mod] => [mod] => [mod] => ...
  91  *
  92  * rsnd_dai_call(xxx, fn )
  93  *  [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
  94  *
  95  */
  96 #include <linux/pm_runtime.h>
  97 #include <linux/shdma-base.h>
  98 #include "rsnd.h"
  99
 100 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
 101 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
 102
 103 /*
 104  *      rsnd_platform functions
 105  */
 106 #define rsnd_platform_call(priv, dai, func, param...)   \
 107         (!(priv->info->func) ? 0 :              \
 108          priv->info->func(param))
 109
 110 /*
 111  *      rsnd_mod functions
 112  */
 113 char *rsnd_mod_name(struct rsnd_mod *mod)
 114 {
 115         if (!mod || !mod->ops)
 116                 return "unknown";
 117
 118         return mod->ops->name;
 119 }
 120
 121 void rsnd_mod_init(struct rsnd_priv *priv,
 122                    struct rsnd_mod *mod,
 123                    struct rsnd_mod_ops *ops,
 124                    int id)
 125 {
 126         mod->priv       = priv;
 127         mod->id         = id;
 128         mod->ops        = ops;
 129         INIT_LIST_HEAD(&mod->list);
 130 }
 131
 132 /*
 133  *      rsnd_dma functions
 134  */
 135 static void rsnd_dma_continue(struct rsnd_dma *dma)
 136 {
 137         /* push next A or B plane */
 138         dma->submit_loop = 1;
 139         schedule_work(&dma->work);
 140 }
 141
 142 void rsnd_dma_start(struct rsnd_dma *dma)
 143 {
 144         /* push both A and B plane*/
 145         dma->submit_loop = 2;
 146         schedule_work(&dma->work);
 147 }
 148
 149 void rsnd_dma_stop(struct rsnd_dma *dma)
 150 {
 151         dma->submit_loop = 0;
 152         cancel_work_sync(&dma->work);
 153         dmaengine_terminate_all(dma->chan);
 154 }
 155
 156 static void rsnd_dma_complete(void *data)
 157 {
 158         struct rsnd_dma *dma = (struct rsnd_dma *)data;
 159         struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
 160         unsigned long flags;
 161
 162         rsnd_lock(priv, flags);
 163
 164         dma->complete(dma);
 165
 166         if (dma->submit_loop)
 167                 rsnd_dma_continue(dma);
 168
 169         rsnd_unlock(priv, flags);
 170 }
 171
 172 static void rsnd_dma_do_work(struct work_struct *work)
 173 {
 174         struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);
 175         struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
 176         struct device *dev = rsnd_priv_to_dev(priv);
 177         struct dma_async_tx_descriptor *desc;
 178         dma_addr_t buf;
 179         size_t len;
 180         int i;
 181
 182         for (i = 0; i < dma->submit_loop; i++) {
 183
 184                 if (dma->inquiry(dma, &buf, &len) < 0)
 185                         return;
 186
 187                 desc = dmaengine_prep_slave_single(
 188                         dma->chan, buf, len, dma->dir,
 189                         DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 190                 if (!desc) {
 191                         dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
 192                         return;
 193                 }
 194
 195                 desc->callback          = rsnd_dma_complete;
 196                 desc->callback_param    = dma;
 197
 198                 if (dmaengine_submit(desc) < 0) {
 199                         dev_err(dev, "dmaengine_submit() fail\n");
 200                         return;
 201                 }
 202
 203                 dma_async_issue_pending(dma->chan);
 204         }
 205 }
 206
 207 int rsnd_dma_available(struct rsnd_dma *dma)
 208 {
 209         return !!dma->chan;
 210 }
 211
 212 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
 213                   int is_play, int id,
 214                   int (*inquiry)(struct rsnd_dma *dma,
 215                                   dma_addr_t *buf, int *len),
 216                   int (*complete)(struct rsnd_dma *dma))
 217 {
 218         struct device *dev = rsnd_priv_to_dev(priv);
 219         struct dma_slave_config cfg;
 220         dma_cap_mask_t mask;
 221         int ret;
 222
 223         if (dma->chan) {
 224                 dev_err(dev, "it already has dma channel\n");
 225                 return -EIO;
 226         }
 227
 228         dma_cap_zero(mask);
 229         dma_cap_set(DMA_SLAVE, mask);
 230
 231         dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
 232                                                      (void *)id, dev,
 233                                                      is_play ? "tx" : "rx");
 234         if (!dma->chan) {
 235                 dev_err(dev, "can't get dma channel\n");
 236                 return -EIO;
 237         }
 238
 239         cfg.slave_id    = id;
 240         cfg.dst_addr    = 0; /* use default addr when playback */
 241         cfg.src_addr    = 0; /* use default addr when capture */
 242         cfg.direction   = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
 243
 244         ret = dmaengine_slave_config(dma->chan, &cfg);
 245         if (ret < 0)
 246                 goto rsnd_dma_init_err;
 247
 248         dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
 249         dma->inquiry = inquiry;
 250         dma->complete = complete;
 251         INIT_WORK(&dma->work, rsnd_dma_do_work);
 252
 253         return 0;
 254
 255 rsnd_dma_init_err:
 256         rsnd_dma_quit(priv, dma);
 257
 258         return ret;
 259 }
 260
 261 void  rsnd_dma_quit(struct rsnd_priv *priv,
 262                     struct rsnd_dma *dma)
 263 {
 264         if (dma->chan)
 265                 dma_release_channel(dma->chan);
 266
 267         dma->chan = NULL;
 268 }
 269
 270 /*
 271  *      rsnd_dai functions
 272  */
 273 #define rsnd_dai_call(rdai, io, fn)                     \
 274 ({                                                      \
 275         struct rsnd_mod *mod, *n;                       \
 276         int ret = 0;                                    \
 277         for_each_rsnd_mod(mod, n, io) {                 \
 278                 ret = rsnd_mod_call(mod, fn, rdai, io); \
 279                 if (ret < 0)                            \
 280                         break;                          \
 281         }                                               \
 282         ret;                                            \
 283 })
 284
 285 int rsnd_dai_connect(struct rsnd_dai *rdai,
 286                      struct rsnd_mod *mod,
 287                      struct rsnd_dai_stream *io)
 288 {
 289         if (!mod)
 290                 return -EIO;
 291
 292         if (!list_empty(&mod->list)) {
 293                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 294                 struct device *dev = rsnd_priv_to_dev(priv);
 295
 296                 dev_err(dev, "%s%d is not empty\n",
 297                         rsnd_mod_name(mod),
 298                         rsnd_mod_id(mod));
 299                 return -EIO;
 300         }
 301
 302         list_add_tail(&mod->list, &io->head);
 303
 304         return 0;
 305 }
 306
 307 int rsnd_dai_disconnect(struct rsnd_mod *mod)
 308 {
 309         list_del_init(&mod->list);
 310
 311         return 0;
 312 }
 313
 314 int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai)
 315 {
 316         int id = rdai - priv->rdai;
 317
 318         if ((id < 0) || (id >= rsnd_dai_nr(priv)))
 319                 return -EINVAL;
 320
 321         return id;
 322 }
 323
 324 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id)
 325 {
 326         if ((id < 0) || (id >= rsnd_dai_nr(priv)))
 327                 return NULL;
 328
 329         return priv->rdai + id;
 330 }
 331
 332 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 333 {
 334         struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
 335
 336         return rsnd_dai_get(priv, dai->id);
 337 }
 338
 339 int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io)
 340 {
 341         return &rdai->playback == io;
 342 }
 343
 344 /*
 345  *      rsnd_soc_dai functions
 346  */
 347 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
 348 {
 349         struct snd_pcm_substream *substream = io->substream;
 350         struct snd_pcm_runtime *runtime = substream->runtime;
 351         int pos = io->byte_pos + additional;
 352
 353         pos %= (runtime->periods * io->byte_per_period);
 354
 355         return pos;
 356 }
 357
 358 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
 359 {
 360         io->byte_pos += byte;
 361
 362         if (io->byte_pos >= io->next_period_byte) {
 363                 struct snd_pcm_substream *substream = io->substream;
 364                 struct snd_pcm_runtime *runtime = substream->runtime;
 365
 366                 io->period_pos++;
 367                 io->next_period_byte += io->byte_per_period;
 368
 369                 if (io->period_pos >= runtime->periods) {
 370                         io->byte_pos = 0;
 371                         io->period_pos = 0;
 372                         io->next_period_byte = io->byte_per_period;
 373                 }
 374
 375                 snd_pcm_period_elapsed(substream);
 376         }
 377 }
 378
 379 static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 380                                 struct snd_pcm_substream *substream)
 381 {
 382         struct snd_pcm_runtime *runtime = substream->runtime;
 383
 384         if (!list_empty(&io->head))
 385                 return -EIO;
 386
 387         INIT_LIST_HEAD(&io->head);
 388         io->substream           = substream;
 389         io->byte_pos            = 0;
 390         io->period_pos          = 0;
 391         io->byte_per_period     = runtime->period_size *
 392                                   runtime->channels *
 393                                   samples_to_bytes(runtime, 1);
 394         io->next_period_byte    = io->byte_per_period;
 395
 396         return 0;
 397 }
 398
 399 static
 400 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 401 {
 402         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 403
 404         return  rtd->cpu_dai;
 405 }
 406
 407 static
 408 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 409                                         struct snd_pcm_substream *substream)
 410 {
 411         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 412                 return &rdai->playback;
 413         else
 414                 return &rdai->capture;
 415 }
 416
 417 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 418                             struct snd_soc_dai *dai)
 419 {
 420         struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
 421         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 422         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 423         struct rsnd_mod *mod = rsnd_ssi_mod_get_frm_dai(priv,
 424                                                 rsnd_dai_id(priv, rdai),
 425                                                 rsnd_dai_is_play(rdai, io));
 426         int ssi_id = rsnd_mod_id(mod);
 427         int ret;
 428         unsigned long flags;
 429
 430         rsnd_lock(priv, flags);
 431
 432         switch (cmd) {
 433         case SNDRV_PCM_TRIGGER_START:
 434                 ret = rsnd_dai_stream_init(io, substream);
 435                 if (ret < 0)
 436                         goto dai_trigger_end;
 437
 438                 ret = rsnd_platform_call(priv, dai, start, ssi_id);
 439                 if (ret < 0)
 440                         goto dai_trigger_end;
 441
 442                 ret = rsnd_gen_path_init(priv, rdai, io);
 443                 if (ret < 0)
 444                         goto dai_trigger_end;
 445
 446                 ret = rsnd_dai_call(rdai, io, init);
 447                 if (ret < 0)
 448                         goto dai_trigger_end;
 449
 450                 ret = rsnd_dai_call(rdai, io, start);
 451                 if (ret < 0)
 452                         goto dai_trigger_end;
 453                 break;
 454         case SNDRV_PCM_TRIGGER_STOP:
 455                 ret = rsnd_dai_call(rdai, io, stop);
 456                 if (ret < 0)
 457                         goto dai_trigger_end;
 458
 459                 ret = rsnd_dai_call(rdai, io, quit);
 460                 if (ret < 0)
 461                         goto dai_trigger_end;
 462
 463                 ret = rsnd_gen_path_exit(priv, rdai, io);
 464                 if (ret < 0)
 465                         goto dai_trigger_end;
 466
 467                 ret = rsnd_platform_call(priv, dai, stop, ssi_id);
 468                 if (ret < 0)
 469                         goto dai_trigger_end;
 470                 break;
 471         default:
 472                 ret = -EINVAL;
 473         }
 474
 475 dai_trigger_end:
 476         rsnd_unlock(priv, flags);
 477
 478         return ret;
 479 }
 480
 481 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 482 {
 483         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 484
 485         /* set master/slave audio interface */
 486         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 487         case SND_SOC_DAIFMT_CBM_CFM:
 488                 rdai->clk_master = 1;
 489                 break;
 490         case SND_SOC_DAIFMT_CBS_CFS:
 491                 rdai->clk_master = 0;
 492                 break;
 493         default:
 494                 return -EINVAL;
 495         }
 496
 497         /* set clock inversion */
 498         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 499         case SND_SOC_DAIFMT_NB_IF:
 500                 rdai->bit_clk_inv = 0;
 501                 rdai->frm_clk_inv = 1;
 502                 break;
 503         case SND_SOC_DAIFMT_IB_NF:
 504                 rdai->bit_clk_inv = 1;
 505                 rdai->frm_clk_inv = 0;
 506                 break;
 507         case SND_SOC_DAIFMT_IB_IF:
 508                 rdai->bit_clk_inv = 1;
 509                 rdai->frm_clk_inv = 1;
 510                 break;
 511         case SND_SOC_DAIFMT_NB_NF:
 512         default:
 513                 rdai->bit_clk_inv = 0;
 514                 rdai->frm_clk_inv = 0;
 515                 break;
 516         }
 517
 518         /* set format */
 519         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 520         case SND_SOC_DAIFMT_I2S:
 521                 rdai->sys_delay = 0;
 522                 rdai->data_alignment = 0;
 523                 break;
 524         case SND_SOC_DAIFMT_LEFT_J:
 525                 rdai->sys_delay = 1;
 526                 rdai->data_alignment = 0;
 527                 break;
 528         case SND_SOC_DAIFMT_RIGHT_J:
 529                 rdai->sys_delay = 1;
 530                 rdai->data_alignment = 1;
 531                 break;
 532         }
 533
 534         return 0;
 535 }
 536
 537 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
 538         .trigger        = rsnd_soc_dai_trigger,
 539         .set_fmt        = rsnd_soc_dai_set_fmt,
 540 };
 541
 542 static int rsnd_dai_probe(struct platform_device *pdev,
 543                           struct rcar_snd_info *info,
 544                           struct rsnd_priv *priv)
 545 {
 546         struct snd_soc_dai_driver *drv;
 547         struct rsnd_dai *rdai;
 548         struct rsnd_mod *pmod, *cmod;
 549         struct device *dev = rsnd_priv_to_dev(priv);
 550         int dai_nr;
 551         int i;
 552
 553         /* get max dai nr */
 554         for (dai_nr = 0; dai_nr < 32; dai_nr++) {
 555                 pmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 1);
 556                 cmod = rsnd_ssi_mod_get_frm_dai(priv, dai_nr, 0);
 557
 558                 if (!pmod && !cmod)
 559                         break;
 560         }
 561
 562         if (!dai_nr) {
 563                 dev_err(dev, "no dai\n");
 564                 return -EIO;
 565         }
 566
 567         drv  = devm_kzalloc(dev, sizeof(*drv)  * dai_nr, GFP_KERNEL);
 568         rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
 569         if (!drv || !rdai) {
 570                 dev_err(dev, "dai allocate failed\n");
 571                 return -ENOMEM;
 572         }
 573
 574         for (i = 0; i < dai_nr; i++) {
 575
 576                 pmod = rsnd_ssi_mod_get_frm_dai(priv, i, 1);
 577                 cmod = rsnd_ssi_mod_get_frm_dai(priv, i, 0);
 578
 579                 /*
 580                  *      init rsnd_dai
 581                  */
 582                 INIT_LIST_HEAD(&rdai[i].playback.head);
 583                 INIT_LIST_HEAD(&rdai[i].capture.head);
 584
 585                 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
 586
 587                 /*
 588                  *      init snd_soc_dai_driver
 589                  */
 590                 drv[i].name     = rdai[i].name;
 591                 drv[i].ops      = &rsnd_soc_dai_ops;
 592                 if (pmod) {
 593                         drv[i].playback.rates           = RSND_RATES;
 594                         drv[i].playback.formats         = RSND_FMTS;
 595                         drv[i].playback.channels_min    = 2;
 596                         drv[i].playback.channels_max    = 2;
 597                 }
 598                 if (cmod) {
 599                         drv[i].capture.rates            = RSND_RATES;
 600                         drv[i].capture.formats          = RSND_FMTS;
 601                         drv[i].capture.channels_min     = 2;
 602                         drv[i].capture.channels_max     = 2;
 603                 }
 604
 605                 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
 606                         pmod ? "play"    : " -- ",
 607                         cmod ? "capture" : "  --   ");
 608         }
 609
 610         priv->dai_nr    = dai_nr;
 611         priv->daidrv    = drv;
 612         priv->rdai      = rdai;
 613
 614         return 0;
 615 }
 616
 617 static void rsnd_dai_remove(struct platform_device *pdev,
 618                           struct rsnd_priv *priv)
 619 {
 620 }
 621
 622 /*
 623  *              pcm ops
 624  */
 625 static struct snd_pcm_hardware rsnd_pcm_hardware = {
 626         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 627                         SNDRV_PCM_INFO_MMAP             |
 628                         SNDRV_PCM_INFO_MMAP_VALID       |
 629                         SNDRV_PCM_INFO_PAUSE,
 630         .buffer_bytes_max       = 64 * 1024,
 631         .period_bytes_min       = 32,
 632         .period_bytes_max       = 8192,
 633         .periods_min            = 1,
 634         .periods_max            = 32,
 635         .fifo_size              = 256,
 636 };
 637
 638 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
 639 {
 640         struct snd_pcm_runtime *runtime = substream->runtime;
 641         int ret = 0;
 642
 643         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 644
 645         ret = snd_pcm_hw_constraint_integer(runtime,
 646                                             SNDRV_PCM_HW_PARAM_PERIODS);
 647
 648         return ret;
 649 }
 650
 651 static int rsnd_hw_params(struct snd_pcm_substream *substream,
 652                          struct snd_pcm_hw_params *hw_params)
 653 {
 654         return snd_pcm_lib_malloc_pages(substream,
 655                                         params_buffer_bytes(hw_params));
 656 }
 657
 658 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
 659 {
 660         struct snd_pcm_runtime *runtime = substream->runtime;
 661         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
 662         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 663         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 664
 665         return bytes_to_frames(runtime, io->byte_pos);
 666 }
 667
 668 static struct snd_pcm_ops rsnd_pcm_ops = {
 669         .open           = rsnd_pcm_open,
 670         .ioctl          = snd_pcm_lib_ioctl,
 671         .hw_params      = rsnd_hw_params,
 672         .hw_free        = snd_pcm_lib_free_pages,
 673         .pointer        = rsnd_pointer,
 674 };
 675
 676 /*
 677  *              snd_soc_platform
 678  */
 679
 680 #define PREALLOC_BUFFER         (32 * 1024)
 681 #define PREALLOC_BUFFER_MAX     (32 * 1024)
 682
 683 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
 684 {
 685         return snd_pcm_lib_preallocate_pages_for_all(
 686                 rtd->pcm,
 687                 SNDRV_DMA_TYPE_DEV,
 688                 rtd->card->snd_card->dev,
 689                 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
 690 }
 691
 692 static void rsnd_pcm_free(struct snd_pcm *pcm)
 693 {
 694         snd_pcm_lib_preallocate_free_for_all(pcm);
 695 }
 696
 697 static struct snd_soc_platform_driver rsnd_soc_platform = {
 698         .ops            = &rsnd_pcm_ops,
 699         .pcm_new        = rsnd_pcm_new,
 700         .pcm_free       = rsnd_pcm_free,
 701 };
 702
 703 static const struct snd_soc_component_driver rsnd_soc_component = {
 704         .name           = "rsnd",
 705 };
 706
 707 /*
 708  *      rsnd probe
 709  */
 710 static int rsnd_probe(struct platform_device *pdev)
 711 {
 712         struct rcar_snd_info *info;
 713         struct rsnd_priv *priv;
 714         struct device *dev = &pdev->dev;
 715         int ret;
 716
 717         info = pdev->dev.platform_data;
 718         if (!info) {
 719                 dev_err(dev, "driver needs R-Car sound information\n");
 720                 return -ENODEV;
 721         }
 722
 723         /*
 724          *      init priv data
 725          */
 726         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 727         if (!priv) {
 728                 dev_err(dev, "priv allocate failed\n");
 729                 return -ENODEV;
 730         }
 731
 732         priv->dev       = dev;
 733         priv->info      = info;
 734         spin_lock_init(&priv->lock);
 735
 736         /*
 737          *      init each module
 738          */
 739         ret = rsnd_gen_probe(pdev, info, priv);
 740         if (ret < 0)
 741                 return ret;
 742
 743         ret = rsnd_scu_probe(pdev, info, priv);
 744         if (ret < 0)
 745                 return ret;
 746
 747         ret = rsnd_adg_probe(pdev, info, priv);
 748         if (ret < 0)
 749                 return ret;
 750
 751         ret = rsnd_ssi_probe(pdev, info, priv);
 752         if (ret < 0)
 753                 return ret;
 754
 755         ret = rsnd_dai_probe(pdev, info, priv);
 756         if (ret < 0)
 757                 return ret;
 758
 759         /*
 760          *      asoc register
 761          */
 762         ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
 763         if (ret < 0) {
 764                 dev_err(dev, "cannot snd soc register\n");
 765                 return ret;
 766         }
 767
 768         ret = snd_soc_register_component(dev, &rsnd_soc_component,
 769                                          priv->daidrv, rsnd_dai_nr(priv));
 770         if (ret < 0) {
 771                 dev_err(dev, "cannot snd dai register\n");
 772                 goto exit_snd_soc;
 773         }
 774
 775         dev_set_drvdata(dev, priv);
 776
 777         pm_runtime_enable(dev);
 778
 779         dev_info(dev, "probed\n");
 780         return ret;
 781
 782 exit_snd_soc:
 783         snd_soc_unregister_platform(dev);
 784
 785         return ret;
 786 }
 787
 788 static int rsnd_remove(struct platform_device *pdev)
 789 {
 790         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
 791
 792         pm_runtime_disable(&pdev->dev);
 793
 794         /*
 795          *      remove each module
 796          */
 797         rsnd_ssi_remove(pdev, priv);
 798         rsnd_adg_remove(pdev, priv);
 799         rsnd_scu_remove(pdev, priv);
 800         rsnd_dai_remove(pdev, priv);
 801         rsnd_gen_remove(pdev, priv);
 802
 803         return 0;
 804 }
 805
 806 static struct platform_driver rsnd_driver = {
 807         .driver = {
 808                 .name   = "rcar_sound",
 809         },
 810         .probe          = rsnd_probe,
 811         .remove         = rsnd_remove,
 812 };
 813 module_platform_driver(rsnd_driver);
 814
 815 MODULE_LICENSE("GPL");
 816 MODULE_DESCRIPTION("Renesas R-Car audio driver");
 817 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 818 MODULE_ALIAS("platform:rcar-pcm-audio");