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 src
  77  *   |
  78  *   +- src
  79  *      |
  80  *      +- src[0]
  81  *      +- src[1]
  82  *      +- src[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 static struct rsnd_of_data rsnd_of_data_gen1 = {
 104         .flags = RSND_GEN1,
 105 };
 106
 107 static struct rsnd_of_data rsnd_of_data_gen2 = {
 108         .flags = RSND_GEN2,
 109 };
 110
 111 static struct of_device_id rsnd_of_match[] = {
 112         { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },
 113         { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },
 114         {},
 115 };
 116 MODULE_DEVICE_TABLE(of, rsnd_of_match);
 117
 118 /*
 119  *      rsnd_platform functions
 120  */
 121 #define rsnd_platform_call(priv, dai, func, param...)   \
 122         (!(priv->info->func) ? 0 :              \
 123          priv->info->func(param))
 124
 125 #define rsnd_is_enable_path(io, name) \
 126         ((io)->info ? (io)->info->name : NULL)
 127 #define rsnd_info_id(priv, io, name) \
 128         ((io)->info->name - priv->info->name##_info)
 129
 130 /*
 131  *      rsnd_mod functions
 132  */
 133 char *rsnd_mod_name(struct rsnd_mod *mod)
 134 {
 135         if (!mod || !mod->ops)
 136                 return "unknown";
 137
 138         return mod->ops->name;
 139 }
 140
 141 char *rsnd_mod_dma_name(struct rsnd_mod *mod)
 142 {
 143         if (!mod || !mod->ops)
 144                 return "unknown";
 145
 146         if (!mod->ops->dma_name)
 147                 return mod->ops->name;
 148
 149         return mod->ops->dma_name(mod);
 150 }
 151
 152 int rsnd_mod_init(struct rsnd_mod *mod,
 153                    struct rsnd_mod_ops *ops,
 154                    struct clk *clk,
 155                    enum rsnd_mod_type type,
 156                    int id)
 157 {
 158         int ret = clk_prepare(clk);
 159
 160         if (ret)
 161                 return ret;
 162
 163         mod->id         = id;
 164         mod->ops        = ops;
 165         mod->type       = type;
 166         mod->clk        = clk;
 167
 168         return ret;
 169 }
 170
 171 void rsnd_mod_quit(struct rsnd_mod *mod)
 172 {
 173         if (mod->clk)
 174                 clk_unprepare(mod->clk);
 175 }
 176
 177 /*
 178  *      rsnd_dma functions
 179  */
 180 void rsnd_dma_stop(struct rsnd_dma *dma)
 181 {
 182         dmaengine_terminate_all(dma->chan);
 183 }
 184
 185 static void rsnd_dma_complete(void *data)
 186 {
 187         struct rsnd_dma *dma = (struct rsnd_dma *)data;
 188         struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
 189         struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
 190
 191         /*
 192          * Renesas sound Gen1 needs 1 DMAC,
 193          * Gen2 needs 2 DMAC.
 194          * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
 195          * But, Audio-DMAC-peri-peri doesn't have interrupt,
 196          * and this driver is assuming that here.
 197          *
 198          * If Audio-DMAC-peri-peri has interrpt,
 199          * rsnd_dai_pointer_update() will be called twice,
 200          * ant it will breaks io->byte_pos
 201          */
 202
 203         rsnd_dai_pointer_update(io, io->byte_per_period);
 204 }
 205
 206 void rsnd_dma_start(struct rsnd_dma *dma)
 207 {
 208         struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
 209         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 210         struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
 211         struct snd_pcm_substream *substream = io->substream;
 212         struct device *dev = rsnd_priv_to_dev(priv);
 213         struct dma_async_tx_descriptor *desc;
 214
 215         desc = dmaengine_prep_dma_cyclic(dma->chan,
 216                                          (dma->addr) ? dma->addr :
 217                                          substream->runtime->dma_addr,
 218                                          snd_pcm_lib_buffer_bytes(substream),
 219                                          snd_pcm_lib_period_bytes(substream),
 220                                          dma->dir,
 221                                          DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 222
 223         if (!desc) {
 224                 dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
 225                 return;
 226         }
 227
 228         desc->callback          = rsnd_dma_complete;
 229         desc->callback_param    = dma;
 230
 231         if (dmaengine_submit(desc) < 0) {
 232                 dev_err(dev, "dmaengine_submit() fail\n");
 233                 return;
 234         }
 235
 236         dma_async_issue_pending(dma->chan);
 237 }
 238
 239 int rsnd_dma_available(struct rsnd_dma *dma)
 240 {
 241         return !!dma->chan;
 242 }
 243
 244 #define DMA_NAME_SIZE 16
 245 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
 246 static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
 247 {
 248         if (mod)
 249                 return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
 250                          rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
 251         else
 252                 return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
 253
 254 }
 255
 256 static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
 257                              struct rsnd_mod *mod_to,
 258                              char *dma_name)
 259 {
 260         int index = 0;
 261
 262         index = _rsnd_dma_of_name(dma_name + index, mod_from);
 263         *(dma_name + index++) = '_';
 264         index = _rsnd_dma_of_name(dma_name + index, mod_to);
 265 }
 266
 267 static void rsnd_dma_of_path(struct rsnd_dma *dma,
 268                              int is_play,
 269                              struct rsnd_mod **mod_from,
 270                              struct rsnd_mod **mod_to)
 271 {
 272         struct rsnd_mod *this = rsnd_dma_to_mod(dma);
 273         struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
 274         struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
 275         struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 276         struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
 277         struct rsnd_mod *mod[MOD_MAX];
 278         int i, index;
 279
 280
 281         for (i = 0; i < MOD_MAX; i++)
 282                 mod[i] = NULL;
 283
 284         /*
 285          * in play case...
 286          *
 287          * src -> dst
 288          *
 289          * mem -> SSI
 290          * mem -> SRC -> SSI
 291          * mem -> SRC -> DVC -> SSI
 292          */
 293         mod[0] = NULL; /* for "mem" */
 294         index = 1;
 295         for (i = 1; i < MOD_MAX; i++) {
 296                 if (!src) {
 297                         mod[i] = ssi;
 298                 } else if (!dvc) {
 299                         mod[i] = src;
 300                         src = NULL;
 301                 } else {
 302                         if ((!is_play) && (this == src))
 303                                 this = dvc;
 304
 305                         mod[i] = (is_play) ? src : dvc;
 306                         i++;
 307                         mod[i] = (is_play) ? dvc : src;
 308                         src = NULL;
 309                         dvc = NULL;
 310                 }
 311
 312                 if (mod[i] == this)
 313                         index = i;
 314
 315                 if (mod[i] == ssi)
 316                         break;
 317         }
 318
 319         if (is_play) {
 320                 *mod_from = mod[index - 1];
 321                 *mod_to   = mod[index];
 322         } else {
 323                 *mod_from = mod[index];
 324                 *mod_to   = mod[index - 1];
 325         }
 326 }
 327
 328 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
 329                   int is_play, int id)
 330 {
 331         struct device *dev = rsnd_priv_to_dev(priv);
 332         struct dma_slave_config cfg;
 333         struct rsnd_mod *mod_from;
 334         struct rsnd_mod *mod_to;
 335         char dma_name[DMA_NAME_SIZE];
 336         dma_cap_mask_t mask;
 337         int ret;
 338
 339         if (dma->chan) {
 340                 dev_err(dev, "it already has dma channel\n");
 341                 return -EIO;
 342         }
 343
 344         dma_cap_zero(mask);
 345         dma_cap_set(DMA_SLAVE, mask);
 346
 347         rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
 348         rsnd_dma_of_name(mod_from, mod_to, dma_name);
 349
 350         cfg.slave_id    = id;
 351         cfg.direction   = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
 352         cfg.src_addr    = rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
 353         cfg.dst_addr    = rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
 354         cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 355         cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 356
 357         dev_dbg(dev, "dma : %s %pad -> %pad\n",
 358                 dma_name, &cfg.src_addr, &cfg.dst_addr);
 359
 360         dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
 361                                                      (void *)id, dev,
 362                                                      dma_name);
 363         if (!dma->chan) {
 364                 dev_err(dev, "can't get dma channel\n");
 365                 goto rsnd_dma_channel_err;
 366         }
 367
 368         ret = dmaengine_slave_config(dma->chan, &cfg);
 369         if (ret < 0)
 370                 goto rsnd_dma_init_err;
 371
 372         dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
 373         dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
 374
 375         return 0;
 376
 377 rsnd_dma_init_err:
 378         rsnd_dma_quit(priv, dma);
 379 rsnd_dma_channel_err:
 380
 381         /*
 382          * DMA failed. try to PIO mode
 383          * see
 384          *      rsnd_ssi_fallback()
 385          *      rsnd_rdai_continuance_probe()
 386          */
 387         return -EAGAIN;
 388 }
 389
 390 void  rsnd_dma_quit(struct rsnd_priv *priv,
 391                     struct rsnd_dma *dma)
 392 {
 393         if (dma->chan)
 394                 dma_release_channel(dma->chan);
 395
 396         dma->chan = NULL;
 397 }
 398
 399 /*
 400  *      settting function
 401  */
 402 u32 rsnd_get_adinr(struct rsnd_mod *mod)
 403 {
 404         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 405         struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
 406         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 407         struct device *dev = rsnd_priv_to_dev(priv);
 408         u32 adinr = runtime->channels;
 409
 410         switch (runtime->sample_bits) {
 411         case 16:
 412                 adinr |= (8 << 16);
 413                 break;
 414         case 32:
 415                 adinr |= (0 << 16);
 416                 break;
 417         default:
 418                 dev_warn(dev, "not supported sample bits\n");
 419                 return 0;
 420         }
 421
 422         return adinr;
 423 }
 424
 425 /*
 426  *      rsnd_dai functions
 427  */
 428 #define __rsnd_mod_call(mod, func, param...)                    \
 429 ({                                                              \
 430         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);         \
 431         struct device *dev = rsnd_priv_to_dev(priv);            \
 432         u32 mask = 1 << __rsnd_mod_shift_##func;                        \
 433         u32 call = __rsnd_mod_call_##func << __rsnd_mod_shift_##func;   \
 434         int ret = 0;                                                    \
 435         if ((mod->status & mask) == call) {                             \
 436                 dev_dbg(dev, "%s[%d] %s\n",                             \
 437                         rsnd_mod_name(mod), rsnd_mod_id(mod), #func);   \
 438                 ret = (mod)->ops->func(mod, param);                     \
 439                 mod->status = (mod->status & ~mask) | (~call & mask);   \
 440         }                                                               \
 441         ret;                                                            \
 442 })
 443
 444 #define rsnd_mod_call(mod, func, param...)      \
 445         (!(mod) ? -ENODEV :                     \
 446          !((mod)->ops->func) ? 0 :              \
 447          __rsnd_mod_call(mod, func, param))
 448
 449 #define rsnd_dai_call(fn, io, param...)                         \
 450 ({                                                              \
 451         struct rsnd_mod *mod;                                   \
 452         int ret = 0, i;                                         \
 453         for (i = 0; i < RSND_MOD_MAX; i++) {                    \
 454                 mod = (io)->mod[i];                             \
 455                 if (!mod)                                       \
 456                         continue;                               \
 457                 ret = rsnd_mod_call(mod, fn, param);            \
 458                 if (ret < 0)                                    \
 459                         break;                                  \
 460         }                                                       \
 461         ret;                                                    \
 462 })
 463
 464 static int rsnd_dai_connect(struct rsnd_mod *mod,
 465                             struct rsnd_dai_stream *io)
 466 {
 467         if (!mod)
 468                 return -EIO;
 469
 470         if (io->mod[mod->type]) {
 471                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 472                 struct device *dev = rsnd_priv_to_dev(priv);
 473
 474                 dev_err(dev, "%s%d is not empty\n",
 475                         rsnd_mod_name(mod),
 476                         rsnd_mod_id(mod));
 477                 return -EIO;
 478         }
 479
 480         io->mod[mod->type] = mod;
 481         mod->io = io;
 482
 483         return 0;
 484 }
 485
 486 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 487                                 struct rsnd_dai_stream *io)
 488 {
 489         mod->io = NULL;
 490         io->mod[mod->type] = NULL;
 491 }
 492
 493 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 494 {
 495         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 496                 return NULL;
 497
 498         return priv->rdai + id;
 499 }
 500
 501 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 502 {
 503         struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
 504
 505         return rsnd_rdai_get(priv, dai->id);
 506 }
 507
 508 /*
 509  *      rsnd_soc_dai functions
 510  */
 511 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
 512 {
 513         struct snd_pcm_substream *substream = io->substream;
 514         struct snd_pcm_runtime *runtime = substream->runtime;
 515         int pos = io->byte_pos + additional;
 516
 517         pos %= (runtime->periods * io->byte_per_period);
 518
 519         return pos;
 520 }
 521
 522 void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
 523 {
 524         io->byte_pos += byte;
 525
 526         if (io->byte_pos >= io->next_period_byte) {
 527                 struct snd_pcm_substream *substream = io->substream;
 528                 struct snd_pcm_runtime *runtime = substream->runtime;
 529
 530                 io->period_pos++;
 531                 io->next_period_byte += io->byte_per_period;
 532
 533                 if (io->period_pos >= runtime->periods) {
 534                         io->byte_pos = 0;
 535                         io->period_pos = 0;
 536                         io->next_period_byte = io->byte_per_period;
 537                 }
 538
 539                 snd_pcm_period_elapsed(substream);
 540         }
 541 }
 542
 543 static int rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 544                                 struct snd_pcm_substream *substream)
 545 {
 546         struct snd_pcm_runtime *runtime = substream->runtime;
 547
 548         io->substream           = substream;
 549         io->byte_pos            = 0;
 550         io->period_pos          = 0;
 551         io->byte_per_period     = runtime->period_size *
 552                                   runtime->channels *
 553                                   samples_to_bytes(runtime, 1);
 554         io->next_period_byte    = io->byte_per_period;
 555
 556         return 0;
 557 }
 558
 559 static
 560 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 561 {
 562         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 563
 564         return  rtd->cpu_dai;
 565 }
 566
 567 static
 568 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 569                                         struct snd_pcm_substream *substream)
 570 {
 571         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 572                 return &rdai->playback;
 573         else
 574                 return &rdai->capture;
 575 }
 576
 577 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 578                             struct snd_soc_dai *dai)
 579 {
 580         struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai);
 581         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 582         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 583         int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
 584         int ret;
 585         unsigned long flags;
 586
 587         rsnd_lock(priv, flags);
 588
 589         switch (cmd) {
 590         case SNDRV_PCM_TRIGGER_START:
 591                 ret = rsnd_dai_stream_init(io, substream);
 592                 if (ret < 0)
 593                         goto dai_trigger_end;
 594
 595                 ret = rsnd_platform_call(priv, dai, start, ssi_id);
 596                 if (ret < 0)
 597                         goto dai_trigger_end;
 598
 599                 ret = rsnd_dai_call(init, io, priv);
 600                 if (ret < 0)
 601                         goto dai_trigger_end;
 602
 603                 ret = rsnd_dai_call(start, io, priv);
 604                 if (ret < 0)
 605                         goto dai_trigger_end;
 606                 break;
 607         case SNDRV_PCM_TRIGGER_STOP:
 608                 ret = rsnd_dai_call(stop, io, priv);
 609                 if (ret < 0)
 610                         goto dai_trigger_end;
 611
 612                 ret = rsnd_dai_call(quit, io, priv);
 613                 if (ret < 0)
 614                         goto dai_trigger_end;
 615
 616                 ret = rsnd_platform_call(priv, dai, stop, ssi_id);
 617                 if (ret < 0)
 618                         goto dai_trigger_end;
 619                 break;
 620         default:
 621                 ret = -EINVAL;
 622         }
 623
 624 dai_trigger_end:
 625         rsnd_unlock(priv, flags);
 626
 627         return ret;
 628 }
 629
 630 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 631 {
 632         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 633
 634         /* set master/slave audio interface */
 635         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 636         case SND_SOC_DAIFMT_CBM_CFM:
 637                 rdai->clk_master = 0;
 638                 break;
 639         case SND_SOC_DAIFMT_CBS_CFS:
 640                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 641                 break;
 642         default:
 643                 return -EINVAL;
 644         }
 645
 646         /* set format */
 647         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 648         case SND_SOC_DAIFMT_I2S:
 649                 rdai->sys_delay = 0;
 650                 rdai->data_alignment = 0;
 651                 rdai->frm_clk_inv = 0;
 652                 break;
 653         case SND_SOC_DAIFMT_LEFT_J:
 654                 rdai->sys_delay = 1;
 655                 rdai->data_alignment = 0;
 656                 rdai->frm_clk_inv = 1;
 657                 break;
 658         case SND_SOC_DAIFMT_RIGHT_J:
 659                 rdai->sys_delay = 1;
 660                 rdai->data_alignment = 1;
 661                 rdai->frm_clk_inv = 1;
 662                 break;
 663         }
 664
 665         /* set clock inversion */
 666         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 667         case SND_SOC_DAIFMT_NB_IF:
 668                 rdai->bit_clk_inv =  rdai->bit_clk_inv;
 669                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 670                 break;
 671         case SND_SOC_DAIFMT_IB_NF:
 672                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 673                 rdai->frm_clk_inv =  rdai->frm_clk_inv;
 674                 break;
 675         case SND_SOC_DAIFMT_IB_IF:
 676                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 677                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 678                 break;
 679         case SND_SOC_DAIFMT_NB_NF:
 680         default:
 681                 break;
 682         }
 683
 684         return 0;
 685 }
 686
 687 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
 688         .trigger        = rsnd_soc_dai_trigger,
 689         .set_fmt        = rsnd_soc_dai_set_fmt,
 690 };
 691
 692 #define rsnd_path_parse(priv, io, type)                         \
 693 ({                                                              \
 694         struct rsnd_mod *mod;                                   \
 695         int ret = 0;                                            \
 696         int id = -1;                                            \
 697                                                                 \
 698         if (rsnd_is_enable_path(io, type)) {                    \
 699                 id = rsnd_info_id(priv, io, type);              \
 700                 if (id >= 0) {                                  \
 701                         mod = rsnd_##type##_mod_get(priv, id);  \
 702                         ret = rsnd_dai_connect(mod, io);        \
 703                 }                                               \
 704         }                                                       \
 705         ret;                                                    \
 706 })
 707
 708 #define rsnd_path_break(priv, io, type)                         \
 709 {                                                               \
 710         struct rsnd_mod *mod;                                   \
 711         int id = -1;                                            \
 712                                                                 \
 713         if (rsnd_is_enable_path(io, type)) {                    \
 714                 id = rsnd_info_id(priv, io, type);              \
 715                 if (id >= 0) {                                  \
 716                         mod = rsnd_##type##_mod_get(priv, id);  \
 717                         rsnd_dai_disconnect(mod, io);           \
 718                 }                                               \
 719         }                                                       \
 720 }
 721
 722 static int rsnd_path_init(struct rsnd_priv *priv,
 723                           struct rsnd_dai *rdai,
 724                           struct rsnd_dai_stream *io)
 725 {
 726         int ret;
 727
 728         /*
 729          * Gen1 is created by SRU/SSI, and this SRU is base module of
 730          * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
 731          *
 732          * Easy image is..
 733          *      Gen1 SRU = Gen2 SCU + SSIU + etc
 734          *
 735          * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
 736          * using fixed path.
 737          */
 738
 739         /* SRC */
 740         ret = rsnd_path_parse(priv, io, src);
 741         if (ret < 0)
 742                 return ret;
 743
 744         /* SSI */
 745         ret = rsnd_path_parse(priv, io, ssi);
 746         if (ret < 0)
 747                 return ret;
 748
 749         /* DVC */
 750         ret = rsnd_path_parse(priv, io, dvc);
 751         if (ret < 0)
 752                 return ret;
 753
 754         return ret;
 755 }
 756
 757 static void rsnd_of_parse_dai(struct platform_device *pdev,
 758                               const struct rsnd_of_data *of_data,
 759                               struct rsnd_priv *priv)
 760 {
 761         struct device_node *dai_node,   *dai_np;
 762         struct device_node *ssi_node,   *ssi_np;
 763         struct device_node *src_node,   *src_np;
 764         struct device_node *dvc_node,   *dvc_np;
 765         struct device_node *playback, *capture;
 766         struct rsnd_dai_platform_info *dai_info;
 767         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 768         struct device *dev = &pdev->dev;
 769         int nr, i;
 770         int dai_i, ssi_i, src_i, dvc_i;
 771
 772         if (!of_data)
 773                 return;
 774
 775         dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
 776         if (!dai_node)
 777                 return;
 778
 779         nr = of_get_child_count(dai_node);
 780         if (!nr)
 781                 return;
 782
 783         dai_info = devm_kzalloc(dev,
 784                                 sizeof(struct rsnd_dai_platform_info) * nr,
 785                                 GFP_KERNEL);
 786         if (!dai_info) {
 787                 dev_err(dev, "dai info allocation error\n");
 788                 return;
 789         }
 790
 791         info->dai_info_nr       = nr;
 792         info->dai_info          = dai_info;
 793
 794         ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
 795         src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
 796         dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
 797
 798 #define mod_parse(name)                                                 \
 799 if (name##_node) {                                                      \
 800         struct rsnd_##name##_platform_info *name##_info;                \
 801                                                                         \
 802         name##_i = 0;                                                   \
 803         for_each_child_of_node(name##_node, name##_np) {                \
 804                 name##_info = info->name##_info + name##_i;             \
 805                                                                         \
 806                 if (name##_np == playback)                              \
 807                         dai_info->playback.name = name##_info;          \
 808                 if (name##_np == capture)                               \
 809                         dai_info->capture.name = name##_info;           \
 810                                                                         \
 811                 name##_i++;                                             \
 812         }                                                               \
 813 }
 814
 815         /*
 816          * parse all dai
 817          */
 818         dai_i = 0;
 819         for_each_child_of_node(dai_node, dai_np) {
 820                 dai_info = info->dai_info + dai_i;
 821
 822                 for (i = 0;; i++) {
 823
 824                         playback = of_parse_phandle(dai_np, "playback", i);
 825                         capture  = of_parse_phandle(dai_np, "capture", i);
 826
 827                         if (!playback && !capture)
 828                                 break;
 829
 830                         mod_parse(ssi);
 831                         mod_parse(src);
 832                         mod_parse(dvc);
 833
 834                         of_node_put(playback);
 835                         of_node_put(capture);
 836                 }
 837
 838                 dai_i++;
 839         }
 840 }
 841
 842 static int rsnd_dai_probe(struct platform_device *pdev,
 843                           const struct rsnd_of_data *of_data,
 844                           struct rsnd_priv *priv)
 845 {
 846         struct snd_soc_dai_driver *drv;
 847         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 848         struct rsnd_dai *rdai;
 849         struct rsnd_ssi_platform_info *pmod, *cmod;
 850         struct device *dev = rsnd_priv_to_dev(priv);
 851         int dai_nr;
 852         int i;
 853
 854         rsnd_of_parse_dai(pdev, of_data, priv);
 855
 856         dai_nr = info->dai_info_nr;
 857         if (!dai_nr) {
 858                 dev_err(dev, "no dai\n");
 859                 return -EIO;
 860         }
 861
 862         drv  = devm_kzalloc(dev, sizeof(*drv)  * dai_nr, GFP_KERNEL);
 863         rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
 864         if (!drv || !rdai) {
 865                 dev_err(dev, "dai allocate failed\n");
 866                 return -ENOMEM;
 867         }
 868
 869         priv->rdai_nr   = dai_nr;
 870         priv->daidrv    = drv;
 871         priv->rdai      = rdai;
 872
 873         for (i = 0; i < dai_nr; i++) {
 874
 875                 pmod = info->dai_info[i].playback.ssi;
 876                 cmod = info->dai_info[i].capture.ssi;
 877
 878                 /*
 879                  *      init rsnd_dai
 880                  */
 881                 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
 882                 rdai[i].priv = priv;
 883
 884                 /*
 885                  *      init snd_soc_dai_driver
 886                  */
 887                 drv[i].name     = rdai[i].name;
 888                 drv[i].ops      = &rsnd_soc_dai_ops;
 889                 if (pmod) {
 890                         drv[i].playback.rates           = RSND_RATES;
 891                         drv[i].playback.formats         = RSND_FMTS;
 892                         drv[i].playback.channels_min    = 2;
 893                         drv[i].playback.channels_max    = 2;
 894
 895                         rdai[i].playback.info = &info->dai_info[i].playback;
 896                         rdai[i].playback.rdai = rdai + i;
 897                         rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
 898                 }
 899                 if (cmod) {
 900                         drv[i].capture.rates            = RSND_RATES;
 901                         drv[i].capture.formats          = RSND_FMTS;
 902                         drv[i].capture.channels_min     = 2;
 903                         drv[i].capture.channels_max     = 2;
 904
 905                         rdai[i].capture.info = &info->dai_info[i].capture;
 906                         rdai[i].capture.rdai = rdai + i;
 907                         rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
 908                 }
 909
 910                 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
 911                         pmod ? "play"    : " -- ",
 912                         cmod ? "capture" : "  --   ");
 913         }
 914
 915         return 0;
 916 }
 917
 918 /*
 919  *              pcm ops
 920  */
 921 static struct snd_pcm_hardware rsnd_pcm_hardware = {
 922         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 923                         SNDRV_PCM_INFO_MMAP             |
 924                         SNDRV_PCM_INFO_MMAP_VALID,
 925         .buffer_bytes_max       = 64 * 1024,
 926         .period_bytes_min       = 32,
 927         .period_bytes_max       = 8192,
 928         .periods_min            = 1,
 929         .periods_max            = 32,
 930         .fifo_size              = 256,
 931 };
 932
 933 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
 934 {
 935         struct snd_pcm_runtime *runtime = substream->runtime;
 936         int ret = 0;
 937
 938         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 939
 940         ret = snd_pcm_hw_constraint_integer(runtime,
 941                                             SNDRV_PCM_HW_PARAM_PERIODS);
 942
 943         return ret;
 944 }
 945
 946 static int rsnd_hw_params(struct snd_pcm_substream *substream,
 947                          struct snd_pcm_hw_params *hw_params)
 948 {
 949         return snd_pcm_lib_malloc_pages(substream,
 950                                         params_buffer_bytes(hw_params));
 951 }
 952
 953 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
 954 {
 955         struct snd_pcm_runtime *runtime = substream->runtime;
 956         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
 957         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 958         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 959
 960         return bytes_to_frames(runtime, io->byte_pos);
 961 }
 962
 963 static struct snd_pcm_ops rsnd_pcm_ops = {
 964         .open           = rsnd_pcm_open,
 965         .ioctl          = snd_pcm_lib_ioctl,
 966         .hw_params      = rsnd_hw_params,
 967         .hw_free        = snd_pcm_lib_free_pages,
 968         .pointer        = rsnd_pointer,
 969 };
 970
 971 /*
 972  *              snd_kcontrol
 973  */
 974 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
 975 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
 976                            struct snd_ctl_elem_info *uinfo)
 977 {
 978         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
 979
 980         if (cfg->texts) {
 981                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 982                 uinfo->count = cfg->size;
 983                 uinfo->value.enumerated.items = cfg->max;
 984                 if (uinfo->value.enumerated.item >= cfg->max)
 985                         uinfo->value.enumerated.item = cfg->max - 1;
 986                 strlcpy(uinfo->value.enumerated.name,
 987                         cfg->texts[uinfo->value.enumerated.item],
 988                         sizeof(uinfo->value.enumerated.name));
 989         } else {
 990                 uinfo->count = cfg->size;
 991                 uinfo->value.integer.min = 0;
 992                 uinfo->value.integer.max = cfg->max;
 993                 uinfo->type = (cfg->max == 1) ?
 994                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
 995                         SNDRV_CTL_ELEM_TYPE_INTEGER;
 996         }
 997
 998         return 0;
 999 }
1000
1001 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1002                           struct snd_ctl_elem_value *uc)
1003 {
1004         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1005         int i;
1006
1007         for (i = 0; i < cfg->size; i++)
1008                 if (cfg->texts)
1009                         uc->value.enumerated.item[i] = cfg->val[i];
1010                 else
1011                         uc->value.integer.value[i] = cfg->val[i];
1012
1013         return 0;
1014 }
1015
1016 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1017                           struct snd_ctl_elem_value *uc)
1018 {
1019         struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
1020         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1021         int i, change = 0;
1022
1023         for (i = 0; i < cfg->size; i++) {
1024                 if (cfg->texts) {
1025                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1026                         cfg->val[i] = uc->value.enumerated.item[i];
1027                 } else {
1028                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1029                         cfg->val[i] = uc->value.integer.value[i];
1030                 }
1031         }
1032
1033         if (change)
1034                 cfg->update(mod);
1035
1036         return change;
1037 }
1038
1039 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1040                             struct snd_soc_pcm_runtime *rtd,
1041                             const unsigned char *name,
1042                             struct rsnd_kctrl_cfg *cfg,
1043                             void (*update)(struct rsnd_mod *mod))
1044 {
1045         struct snd_card *card = rtd->card->snd_card;
1046         struct snd_kcontrol *kctrl;
1047         struct snd_kcontrol_new knew = {
1048                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1049                 .name           = name,
1050                 .info           = rsnd_kctrl_info,
1051                 .get            = rsnd_kctrl_get,
1052                 .put            = rsnd_kctrl_put,
1053                 .private_value  = (unsigned long)cfg,
1054         };
1055         int ret;
1056
1057         kctrl = snd_ctl_new1(&knew, mod);
1058         if (!kctrl)
1059                 return -ENOMEM;
1060
1061         ret = snd_ctl_add(card, kctrl);
1062         if (ret < 0) {
1063                 snd_ctl_free_one(kctrl);
1064                 return ret;
1065         }
1066
1067         cfg->update = update;
1068         cfg->card = card;
1069         cfg->kctrl = kctrl;
1070
1071         return 0;
1072 }
1073
1074 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1075 {
1076         snd_ctl_remove(cfg->card, cfg->kctrl);
1077 }
1078
1079 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1080                      struct snd_soc_pcm_runtime *rtd,
1081                      const unsigned char *name,
1082                      void (*update)(struct rsnd_mod *mod),
1083                      struct rsnd_kctrl_cfg_m *_cfg,
1084                      u32 max)
1085 {
1086         _cfg->cfg.max   = max;
1087         _cfg->cfg.size  = RSND_DVC_CHANNELS;
1088         _cfg->cfg.val   = _cfg->val;
1089         return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
1090 }
1091
1092 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1093                      struct snd_soc_pcm_runtime *rtd,
1094                      const unsigned char *name,
1095                      void (*update)(struct rsnd_mod *mod),
1096                      struct rsnd_kctrl_cfg_s *_cfg,
1097                      u32 max)
1098 {
1099         _cfg->cfg.max   = max;
1100         _cfg->cfg.size  = 1;
1101         _cfg->cfg.val   = &_cfg->val;
1102         return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
1103 }
1104
1105 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1106                      struct snd_soc_pcm_runtime *rtd,
1107                      const unsigned char *name,
1108                      struct rsnd_kctrl_cfg_s *_cfg,
1109                      void (*update)(struct rsnd_mod *mod),
1110                      const char * const *texts,
1111                      u32 max)
1112 {
1113         _cfg->cfg.max   = max;
1114         _cfg->cfg.size  = 1;
1115         _cfg->cfg.val   = &_cfg->val;
1116         _cfg->cfg.texts = texts;
1117         return __rsnd_kctrl_new(mod, rtd, name, &_cfg->cfg, update);
1118 }
1119
1120 /*
1121  *              snd_soc_platform
1122  */
1123
1124 #define PREALLOC_BUFFER         (32 * 1024)
1125 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1126
1127 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1128 {
1129         struct snd_soc_dai *dai = rtd->cpu_dai;
1130         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1131         int ret;
1132
1133         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1134         if (ret)
1135                 return ret;
1136
1137         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1138         if (ret)
1139                 return ret;
1140
1141         return snd_pcm_lib_preallocate_pages_for_all(
1142                 rtd->pcm,
1143                 SNDRV_DMA_TYPE_DEV,
1144                 rtd->card->snd_card->dev,
1145                 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1146 }
1147
1148 static struct snd_soc_platform_driver rsnd_soc_platform = {
1149         .ops            = &rsnd_pcm_ops,
1150         .pcm_new        = rsnd_pcm_new,
1151 };
1152
1153 static const struct snd_soc_component_driver rsnd_soc_component = {
1154         .name           = "rsnd",
1155 };
1156
1157 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1158                                        struct rsnd_dai_stream *io)
1159 {
1160         int ret;
1161
1162         ret = rsnd_dai_call(probe, io, priv);
1163         if (ret == -EAGAIN) {
1164                 /*
1165                  * Fallback to PIO mode
1166                  */
1167
1168                 /*
1169                  * call "remove" for SSI/SRC/DVC
1170                  * SSI will be switch to PIO mode if it was DMA mode
1171                  * see
1172                  *      rsnd_dma_init()
1173                  *      rsnd_ssi_fallback()
1174                  */
1175                 rsnd_dai_call(remove, io, priv);
1176
1177                 /*
1178                  * remove SRC/DVC from DAI,
1179                  */
1180                 rsnd_path_break(priv, io, src);
1181                 rsnd_path_break(priv, io, dvc);
1182
1183                 /*
1184                  * fallback
1185                  */
1186                 rsnd_dai_call(fallback, io, priv);
1187
1188                 /*
1189                  * retry to "probe".
1190                  * DAI has SSI which is PIO mode only now.
1191                  */
1192                 ret = rsnd_dai_call(probe, io, priv);
1193         }
1194
1195         return ret;
1196 }
1197
1198 /*
1199  *      rsnd probe
1200  */
1201 static int rsnd_probe(struct platform_device *pdev)
1202 {
1203         struct rcar_snd_info *info;
1204         struct rsnd_priv *priv;
1205         struct device *dev = &pdev->dev;
1206         struct rsnd_dai *rdai;
1207         const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
1208         const struct rsnd_of_data *of_data;
1209         int (*probe_func[])(struct platform_device *pdev,
1210                             const struct rsnd_of_data *of_data,
1211                             struct rsnd_priv *priv) = {
1212                 rsnd_gen_probe,
1213                 rsnd_ssi_probe,
1214                 rsnd_src_probe,
1215                 rsnd_dvc_probe,
1216                 rsnd_adg_probe,
1217                 rsnd_dai_probe,
1218         };
1219         int ret, i;
1220
1221         info = NULL;
1222         of_data = NULL;
1223         if (of_id) {
1224                 info = devm_kzalloc(&pdev->dev,
1225                                     sizeof(struct rcar_snd_info), GFP_KERNEL);
1226                 of_data = of_id->data;
1227         } else {
1228                 info = pdev->dev.platform_data;
1229         }
1230
1231         if (!info) {
1232                 dev_err(dev, "driver needs R-Car sound information\n");
1233                 return -ENODEV;
1234         }
1235
1236         /*
1237          *      init priv data
1238          */
1239         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1240         if (!priv) {
1241                 dev_err(dev, "priv allocate failed\n");
1242                 return -ENODEV;
1243         }
1244
1245         priv->pdev      = pdev;
1246         priv->info      = info;
1247         spin_lock_init(&priv->lock);
1248
1249         /*
1250          *      init each module
1251          */
1252         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1253                 ret = probe_func[i](pdev, of_data, priv);
1254                 if (ret)
1255                         return ret;
1256         }
1257
1258         for_each_rsnd_dai(rdai, priv, i) {
1259                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1260                 if (ret)
1261                         goto exit_snd_probe;
1262
1263                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1264                 if (ret)
1265                         goto exit_snd_probe;
1266         }
1267
1268         dev_set_drvdata(dev, priv);
1269
1270         /*
1271          *      asoc register
1272          */
1273         ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1274         if (ret < 0) {
1275                 dev_err(dev, "cannot snd soc register\n");
1276                 return ret;
1277         }
1278
1279         ret = snd_soc_register_component(dev, &rsnd_soc_component,
1280                                          priv->daidrv, rsnd_rdai_nr(priv));
1281         if (ret < 0) {
1282                 dev_err(dev, "cannot snd dai register\n");
1283                 goto exit_snd_soc;
1284         }
1285
1286         pm_runtime_enable(dev);
1287
1288         dev_info(dev, "probed\n");
1289         return ret;
1290
1291 exit_snd_soc:
1292         snd_soc_unregister_platform(dev);
1293 exit_snd_probe:
1294         for_each_rsnd_dai(rdai, priv, i) {
1295                 rsnd_dai_call(remove, &rdai->playback, priv);
1296                 rsnd_dai_call(remove, &rdai->capture, priv);
1297         }
1298
1299         return ret;
1300 }
1301
1302 static int rsnd_remove(struct platform_device *pdev)
1303 {
1304         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1305         struct rsnd_dai *rdai;
1306         void (*remove_func[])(struct platform_device *pdev,
1307                               struct rsnd_priv *priv) = {
1308                 rsnd_ssi_remove,
1309                 rsnd_src_remove,
1310                 rsnd_dvc_remove,
1311         };
1312         int ret = 0, i;
1313
1314         pm_runtime_disable(&pdev->dev);
1315
1316         for_each_rsnd_dai(rdai, priv, i) {
1317                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1318                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1319         }
1320
1321         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1322                 remove_func[i](pdev, priv);
1323
1324         snd_soc_unregister_component(&pdev->dev);
1325         snd_soc_unregister_platform(&pdev->dev);
1326
1327         return ret;
1328 }
1329
1330 static struct platform_driver rsnd_driver = {
1331         .driver = {
1332                 .name   = "rcar_sound",
1333                 .of_match_table = rsnd_of_match,
1334         },
1335         .probe          = rsnd_probe,
1336         .remove         = rsnd_remove,
1337 };
1338 module_platform_driver(rsnd_driver);
1339
1340 MODULE_LICENSE("GPL");
1341 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1342 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1343 MODULE_ALIAS("platform:rcar-pcm-audio");