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 "rsnd.h"
  98
  99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
 100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
 101
 102 static const struct rsnd_of_data rsnd_of_data_gen1 = {
 103         .flags = RSND_GEN1,
 104 };
 105
 106 static const struct rsnd_of_data rsnd_of_data_gen2 = {
 107         .flags = RSND_GEN2,
 108 };
 109
 110 static const struct of_device_id rsnd_of_match[] = {
 111         { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },
 112         { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },
 113         { .compatible = "renesas,rcar_sound-gen3", .data = &rsnd_of_data_gen2 }, /* gen2 compatible */
 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 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
 131 {
 132         if (mod->type != type) {
 133                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 134                 struct device *dev = rsnd_priv_to_dev(priv);
 135
 136                 dev_warn(dev, "%s[%d] is not your expected module\n",
 137                          rsnd_mod_name(mod), rsnd_mod_id(mod));
 138         }
 139 }
 140
 141 /*
 142  *      rsnd_mod functions
 143  */
 144 char *rsnd_mod_name(struct rsnd_mod *mod)
 145 {
 146         if (!mod || !mod->ops)
 147                 return "unknown";
 148
 149         return mod->ops->name;
 150 }
 151
 152 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
 153                                   struct rsnd_mod *mod)
 154 {
 155         if (!mod || !mod->ops || !mod->ops->dma_req)
 156                 return NULL;
 157
 158         return mod->ops->dma_req(io, mod);
 159 }
 160
 161 int rsnd_mod_init(struct rsnd_priv *priv,
 162                   struct rsnd_mod *mod,
 163                    struct rsnd_mod_ops *ops,
 164                    struct clk *clk,
 165                    enum rsnd_mod_type type,
 166                    int id)
 167 {
 168         int ret = clk_prepare(clk);
 169
 170         if (ret)
 171                 return ret;
 172
 173         mod->id         = id;
 174         mod->ops        = ops;
 175         mod->type       = type;
 176         mod->clk        = clk;
 177         mod->priv       = priv;
 178
 179         return ret;
 180 }
 181
 182 void rsnd_mod_quit(struct rsnd_mod *mod)
 183 {
 184         if (mod->clk)
 185                 clk_unprepare(mod->clk);
 186 }
 187
 188 void rsnd_mod_interrupt(struct rsnd_mod *mod,
 189                         void (*callback)(struct rsnd_mod *mod,
 190                                          struct rsnd_dai_stream *io))
 191 {
 192         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 193         struct rsnd_dai_stream *io;
 194         struct rsnd_dai *rdai;
 195         int i;
 196
 197         for_each_rsnd_dai(rdai, priv, i) {
 198                 io = &rdai->playback;
 199                 if (mod == io->mod[mod->type])
 200                         callback(mod, io);
 201
 202                 io = &rdai->capture;
 203                 if (mod == io->mod[mod->type])
 204                         callback(mod, io);
 205         }
 206 }
 207
 208 int rsnd_io_is_working(struct rsnd_dai_stream *io)
 209 {
 210         /* see rsnd_dai_stream_init/quit() */
 211         return !!io->substream;
 212 }
 213
 214 /*
 215  *      ADINR function
 216  */
 217 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 218 {
 219         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 220         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 221         struct device *dev = rsnd_priv_to_dev(priv);
 222         u32 adinr = runtime->channels;
 223
 224         switch (runtime->sample_bits) {
 225         case 16:
 226                 adinr |= (8 << 16);
 227                 break;
 228         case 32:
 229                 adinr |= (0 << 16);
 230                 break;
 231         default:
 232                 dev_warn(dev, "not supported sample bits\n");
 233                 return 0;
 234         }
 235
 236         return adinr;
 237 }
 238
 239 u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 240 {
 241         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 242         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 243         struct device *dev = rsnd_priv_to_dev(priv);
 244         u32 chan = runtime->channels;
 245
 246         switch (chan) {
 247         case 1:
 248         case 2:
 249         case 4:
 250         case 6:
 251         case 8:
 252                 break;
 253         default:
 254                 dev_warn(dev, "not supported channel\n");
 255                 chan = 0;
 256                 break;
 257         }
 258
 259         return chan;
 260 }
 261
 262 /*
 263  *      DALIGN function
 264  */
 265 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 266 {
 267         struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 268         struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
 269         struct rsnd_mod *target = src ? src : ssi;
 270         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 271         u32 val = 0x76543210;
 272         u32 mask = ~0;
 273
 274         mask <<= runtime->channels * 4;
 275         val = val & mask;
 276
 277         switch (runtime->sample_bits) {
 278         case 16:
 279                 val |= 0x67452301 & ~mask;
 280                 break;
 281         case 32:
 282                 val |= 0x76543210 & ~mask;
 283                 break;
 284         }
 285
 286         /*
 287          * exchange channeles on SRC if possible,
 288          * otherwise, R/L volume settings on DVC
 289          * changes inverted channels
 290          */
 291         if (mod == target)
 292                 return val;
 293         else
 294                 return 0x76543210;
 295 }
 296
 297 /*
 298  *      rsnd_dai functions
 299  */
 300 #define rsnd_mod_call(mod, io, func, param...)                  \
 301 ({                                                              \
 302         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);         \
 303         struct device *dev = rsnd_priv_to_dev(priv);            \
 304         u32 mask = 0xF << __rsnd_mod_shift_##func;                      \
 305         u8 val  = (mod->status >> __rsnd_mod_shift_##func) & 0xF;       \
 306         u8 add  = ((val + __rsnd_mod_add_##func) & 0xF);                \
 307         int ret = 0;                                                    \
 308         int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \
 309         mod->status = (mod->status & ~mask) +                           \
 310                 (add << __rsnd_mod_shift_##func);                       \
 311         dev_dbg(dev, "%s[%d]\t0x%08x %s\n",                             \
 312                 rsnd_mod_name(mod), rsnd_mod_id(mod),                   \
 313                 mod->status, call ? #func : "");                        \
 314         if (call)                                                       \
 315                 ret = (mod)->ops->func(mod, io, param);                 \
 316         ret;                                                            \
 317 })
 318
 319 #define rsnd_dai_call(fn, io, param...)                         \
 320 ({                                                              \
 321         struct rsnd_mod *mod;                                   \
 322         int ret = 0, i;                                         \
 323         for (i = 0; i < RSND_MOD_MAX; i++) {                    \
 324                 mod = (io)->mod[i];                             \
 325                 if (!mod)                                       \
 326                         continue;                               \
 327                 ret |= rsnd_mod_call(mod, io, fn, param);       \
 328         }                                                       \
 329         ret;                                                    \
 330 })
 331
 332 static int rsnd_dai_connect(struct rsnd_mod *mod,
 333                             struct rsnd_dai_stream *io)
 334 {
 335         struct rsnd_priv *priv;
 336         struct device *dev;
 337
 338         if (!mod)
 339                 return -EIO;
 340
 341         priv = rsnd_mod_to_priv(mod);
 342         dev = rsnd_priv_to_dev(priv);
 343
 344         io->mod[mod->type] = mod;
 345
 346         dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
 347                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 348                 rsnd_io_is_play(io) ? "Playback" : "Capture");
 349
 350         return 0;
 351 }
 352
 353 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 354                                 struct rsnd_dai_stream *io)
 355 {
 356         io->mod[mod->type] = NULL;
 357 }
 358
 359 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 360 {
 361         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 362                 return NULL;
 363
 364         return priv->rdai + id;
 365 }
 366
 367 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
 368 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 369 {
 370         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 371
 372         return rsnd_rdai_get(priv, dai->id);
 373 }
 374
 375 /*
 376  *      rsnd_soc_dai functions
 377  */
 378 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
 379 {
 380         struct snd_pcm_substream *substream = io->substream;
 381         struct snd_pcm_runtime *runtime = substream->runtime;
 382         int pos = io->byte_pos + additional;
 383
 384         pos %= (runtime->periods * io->byte_per_period);
 385
 386         return pos;
 387 }
 388
 389 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
 390 {
 391         io->byte_pos += byte;
 392
 393         if (io->byte_pos >= io->next_period_byte) {
 394                 struct snd_pcm_substream *substream = io->substream;
 395                 struct snd_pcm_runtime *runtime = substream->runtime;
 396
 397                 io->period_pos++;
 398                 io->next_period_byte += io->byte_per_period;
 399
 400                 if (io->period_pos >= runtime->periods) {
 401                         io->byte_pos = 0;
 402                         io->period_pos = 0;
 403                         io->next_period_byte = io->byte_per_period;
 404                 }
 405
 406                 return true;
 407         }
 408
 409         return false;
 410 }
 411
 412 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
 413 {
 414         struct snd_pcm_substream *substream = io->substream;
 415
 416         /*
 417          * this function should be called...
 418          *
 419          * - if rsnd_dai_pointer_update() returns true
 420          * - without spin lock
 421          */
 422
 423         snd_pcm_period_elapsed(substream);
 424 }
 425
 426 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 427                                 struct snd_pcm_substream *substream)
 428 {
 429         struct snd_pcm_runtime *runtime = substream->runtime;
 430
 431         io->substream           = substream;
 432         io->byte_pos            = 0;
 433         io->period_pos          = 0;
 434         io->byte_per_period     = runtime->period_size *
 435                                   runtime->channels *
 436                                   samples_to_bytes(runtime, 1);
 437         io->next_period_byte    = io->byte_per_period;
 438 }
 439
 440 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
 441 {
 442         io->substream           = NULL;
 443 }
 444
 445 static
 446 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 447 {
 448         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 449
 450         return  rtd->cpu_dai;
 451 }
 452
 453 static
 454 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 455                                         struct snd_pcm_substream *substream)
 456 {
 457         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 458                 return &rdai->playback;
 459         else
 460                 return &rdai->capture;
 461 }
 462
 463 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 464                             struct snd_soc_dai *dai)
 465 {
 466         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 467         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 468         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 469         int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
 470         int ret;
 471         unsigned long flags;
 472
 473         spin_lock_irqsave(&priv->lock, flags);
 474
 475         switch (cmd) {
 476         case SNDRV_PCM_TRIGGER_START:
 477                 rsnd_dai_stream_init(io, substream);
 478
 479                 ret = rsnd_platform_call(priv, dai, start, ssi_id);
 480                 if (ret < 0)
 481                         goto dai_trigger_end;
 482
 483                 ret = rsnd_dai_call(init, io, priv);
 484                 if (ret < 0)
 485                         goto dai_trigger_end;
 486
 487                 ret = rsnd_dai_call(start, io, priv);
 488                 if (ret < 0)
 489                         goto dai_trigger_end;
 490                 break;
 491         case SNDRV_PCM_TRIGGER_STOP:
 492                 ret = rsnd_dai_call(stop, io, priv);
 493
 494                 ret |= rsnd_dai_call(quit, io, priv);
 495
 496                 ret |= rsnd_platform_call(priv, dai, stop, ssi_id);
 497
 498                 rsnd_dai_stream_quit(io);
 499                 break;
 500         default:
 501                 ret = -EINVAL;
 502         }
 503
 504 dai_trigger_end:
 505         spin_unlock_irqrestore(&priv->lock, flags);
 506
 507         return ret;
 508 }
 509
 510 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 511 {
 512         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 513
 514         /* set master/slave audio interface */
 515         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 516         case SND_SOC_DAIFMT_CBM_CFM:
 517                 rdai->clk_master = 0;
 518                 break;
 519         case SND_SOC_DAIFMT_CBS_CFS:
 520                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 521                 break;
 522         default:
 523                 return -EINVAL;
 524         }
 525
 526         /* set format */
 527         rdai->bit_clk_inv = 0;
 528         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 529         case SND_SOC_DAIFMT_I2S:
 530                 rdai->sys_delay = 0;
 531                 rdai->data_alignment = 0;
 532                 rdai->frm_clk_inv = 0;
 533                 break;
 534         case SND_SOC_DAIFMT_LEFT_J:
 535                 rdai->sys_delay = 1;
 536                 rdai->data_alignment = 0;
 537                 rdai->frm_clk_inv = 1;
 538                 break;
 539         case SND_SOC_DAIFMT_RIGHT_J:
 540                 rdai->sys_delay = 1;
 541                 rdai->data_alignment = 1;
 542                 rdai->frm_clk_inv = 1;
 543                 break;
 544         }
 545
 546         /* set clock inversion */
 547         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 548         case SND_SOC_DAIFMT_NB_IF:
 549                 rdai->bit_clk_inv =  rdai->bit_clk_inv;
 550                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 551                 break;
 552         case SND_SOC_DAIFMT_IB_NF:
 553                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 554                 rdai->frm_clk_inv =  rdai->frm_clk_inv;
 555                 break;
 556         case SND_SOC_DAIFMT_IB_IF:
 557                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 558                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 559                 break;
 560         case SND_SOC_DAIFMT_NB_NF:
 561         default:
 562                 break;
 563         }
 564
 565         return 0;
 566 }
 567
 568 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
 569         .trigger        = rsnd_soc_dai_trigger,
 570         .set_fmt        = rsnd_soc_dai_set_fmt,
 571 };
 572
 573 #define rsnd_path_add(priv, io, type)                           \
 574 ({                                                              \
 575         struct rsnd_mod *mod;                                   \
 576         int ret = 0;                                            \
 577         int id = -1;                                            \
 578                                                                 \
 579         if (rsnd_is_enable_path(io, type)) {                    \
 580                 id = rsnd_info_id(priv, io, type);              \
 581                 if (id >= 0) {                                  \
 582                         mod = rsnd_##type##_mod_get(priv, id);  \
 583                         ret = rsnd_dai_connect(mod, io);        \
 584                 }                                               \
 585         }                                                       \
 586         ret;                                                    \
 587 })
 588
 589 #define rsnd_path_remove(priv, io, type)                        \
 590 {                                                               \
 591         struct rsnd_mod *mod;                                   \
 592         int id = -1;                                            \
 593                                                                 \
 594         if (rsnd_is_enable_path(io, type)) {                    \
 595                 id = rsnd_info_id(priv, io, type);              \
 596                 if (id >= 0) {                                  \
 597                         mod = rsnd_##type##_mod_get(priv, id);  \
 598                         rsnd_dai_disconnect(mod, io);           \
 599                 }                                               \
 600         }                                                       \
 601 }
 602
 603 void rsnd_path_parse(struct rsnd_priv *priv,
 604                      struct rsnd_dai_stream *io)
 605 {
 606         struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
 607         struct rsnd_mod *mix = rsnd_io_to_mod_mix(io);
 608         struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 609         struct rsnd_mod *cmd;
 610         struct device *dev = rsnd_priv_to_dev(priv);
 611         u32 data;
 612
 613         /* Gen1 is not supported */
 614         if (rsnd_is_gen1(priv))
 615                 return;
 616
 617         if (!mix && !dvc)
 618                 return;
 619
 620         if (mix) {
 621                 struct rsnd_dai *rdai;
 622                 int i;
 623                 u32 path[] = {
 624                         [0] = 0,
 625                         [1] = 1 << 0,
 626                         [2] = 0,
 627                         [3] = 0,
 628                         [4] = 0,
 629                         [5] = 1 << 8
 630                 };
 631
 632                 /*
 633                  * it is assuming that integrater is well understanding about
 634                  * data path. Here doesn't check impossible connection,
 635                  * like src2 + src5
 636                  */
 637                 data = 0;
 638                 for_each_rsnd_dai(rdai, priv, i) {
 639                         io = &rdai->playback;
 640                         if (mix == rsnd_io_to_mod_mix(io))
 641                                 data |= path[rsnd_mod_id(src)];
 642
 643                         io = &rdai->capture;
 644                         if (mix == rsnd_io_to_mod_mix(io))
 645                                 data |= path[rsnd_mod_id(src)];
 646                 }
 647
 648                 /*
 649                  * We can't use ctu = rsnd_io_ctu() here.
 650                  * Since, ID of dvc/mix are 0 or 1 (= same as CMD number)
 651                  * but ctu IDs are 0 - 7 (= CTU00 - CTU13)
 652                  */
 653                 cmd = mix;
 654         } else {
 655                 u32 path[] = {
 656                         [0] = 0x30000,
 657                         [1] = 0x30001,
 658                         [2] = 0x40000,
 659                         [3] = 0x10000,
 660                         [4] = 0x20000,
 661                         [5] = 0x40100
 662                 };
 663
 664                 data = path[rsnd_mod_id(src)];
 665
 666                 cmd = dvc;
 667         }
 668
 669         dev_dbg(dev, "ctu/mix path = 0x%08x", data);
 670
 671         rsnd_mod_write(cmd, CMD_ROUTE_SLCT, data);
 672
 673         rsnd_mod_write(cmd, CMD_CTRL, 0x10);
 674 }
 675
 676 static int rsnd_path_init(struct rsnd_priv *priv,
 677                           struct rsnd_dai *rdai,
 678                           struct rsnd_dai_stream *io)
 679 {
 680         int ret;
 681
 682         /*
 683          * Gen1 is created by SRU/SSI, and this SRU is base module of
 684          * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
 685          *
 686          * Easy image is..
 687          *      Gen1 SRU = Gen2 SCU + SSIU + etc
 688          *
 689          * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
 690          * using fixed path.
 691          */
 692
 693         /* SSI */
 694         ret = rsnd_path_add(priv, io, ssi);
 695         if (ret < 0)
 696                 return ret;
 697
 698         /* SRC */
 699         ret = rsnd_path_add(priv, io, src);
 700         if (ret < 0)
 701                 return ret;
 702
 703         /* CTU */
 704         ret = rsnd_path_add(priv, io, ctu);
 705         if (ret < 0)
 706                 return ret;
 707
 708         /* MIX */
 709         ret = rsnd_path_add(priv, io, mix);
 710         if (ret < 0)
 711                 return ret;
 712
 713         /* DVC */
 714         ret = rsnd_path_add(priv, io, dvc);
 715         if (ret < 0)
 716                 return ret;
 717
 718         return ret;
 719 }
 720
 721 static void rsnd_of_parse_dai(struct platform_device *pdev,
 722                               const struct rsnd_of_data *of_data,
 723                               struct rsnd_priv *priv)
 724 {
 725         struct device_node *dai_node,   *dai_np;
 726         struct device_node *ssi_node,   *ssi_np;
 727         struct device_node *src_node,   *src_np;
 728         struct device_node *ctu_node,   *ctu_np;
 729         struct device_node *mix_node,   *mix_np;
 730         struct device_node *dvc_node,   *dvc_np;
 731         struct device_node *playback, *capture;
 732         struct rsnd_dai_platform_info *dai_info;
 733         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 734         struct device *dev = &pdev->dev;
 735         int nr, i;
 736         int dai_i, ssi_i, src_i, ctu_i, mix_i, dvc_i;
 737
 738         if (!of_data)
 739                 return;
 740
 741         dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
 742         if (!dai_node)
 743                 return;
 744
 745         nr = of_get_child_count(dai_node);
 746         if (!nr)
 747                 return;
 748
 749         dai_info = devm_kzalloc(dev,
 750                                 sizeof(struct rsnd_dai_platform_info) * nr,
 751                                 GFP_KERNEL);
 752         if (!dai_info) {
 753                 dev_err(dev, "dai info allocation error\n");
 754                 return;
 755         }
 756
 757         info->dai_info_nr       = nr;
 758         info->dai_info          = dai_info;
 759
 760         ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
 761         src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
 762         ctu_node = of_get_child_by_name(dev->of_node, "rcar_sound,ctu");
 763         mix_node = of_get_child_by_name(dev->of_node, "rcar_sound,mix");
 764         dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
 765
 766 #define mod_parse(name)                                                 \
 767 if (name##_node) {                                                      \
 768         struct rsnd_##name##_platform_info *name##_info;                \
 769                                                                         \
 770         name##_i = 0;                                                   \
 771         for_each_child_of_node(name##_node, name##_np) {                \
 772                 name##_info = info->name##_info + name##_i;             \
 773                                                                         \
 774                 if (name##_np == playback)                              \
 775                         dai_info->playback.name = name##_info;          \
 776                 if (name##_np == capture)                               \
 777                         dai_info->capture.name = name##_info;           \
 778                                                                         \
 779                 name##_i++;                                             \
 780         }                                                               \
 781 }
 782
 783         /*
 784          * parse all dai
 785          */
 786         dai_i = 0;
 787         for_each_child_of_node(dai_node, dai_np) {
 788                 dai_info = info->dai_info + dai_i;
 789
 790                 for (i = 0;; i++) {
 791
 792                         playback = of_parse_phandle(dai_np, "playback", i);
 793                         capture  = of_parse_phandle(dai_np, "capture", i);
 794
 795                         if (!playback && !capture)
 796                                 break;
 797
 798                         mod_parse(ssi);
 799                         mod_parse(src);
 800                         mod_parse(ctu);
 801                         mod_parse(mix);
 802                         mod_parse(dvc);
 803
 804                         of_node_put(playback);
 805                         of_node_put(capture);
 806                 }
 807
 808                 dai_i++;
 809         }
 810 }
 811
 812 static int rsnd_dai_probe(struct platform_device *pdev,
 813                           const struct rsnd_of_data *of_data,
 814                           struct rsnd_priv *priv)
 815 {
 816         struct snd_soc_dai_driver *drv;
 817         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
 818         struct rsnd_dai *rdai;
 819         struct rsnd_ssi_platform_info *pmod, *cmod;
 820         struct device *dev = rsnd_priv_to_dev(priv);
 821         int dai_nr;
 822         int i;
 823
 824         rsnd_of_parse_dai(pdev, of_data, priv);
 825
 826         dai_nr = info->dai_info_nr;
 827         if (!dai_nr) {
 828                 dev_err(dev, "no dai\n");
 829                 return -EIO;
 830         }
 831
 832         drv  = devm_kzalloc(dev, sizeof(*drv)  * dai_nr, GFP_KERNEL);
 833         rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
 834         if (!drv || !rdai) {
 835                 dev_err(dev, "dai allocate failed\n");
 836                 return -ENOMEM;
 837         }
 838
 839         priv->rdai_nr   = dai_nr;
 840         priv->daidrv    = drv;
 841         priv->rdai      = rdai;
 842
 843         for (i = 0; i < dai_nr; i++) {
 844
 845                 pmod = info->dai_info[i].playback.ssi;
 846                 cmod = info->dai_info[i].capture.ssi;
 847
 848                 /*
 849                  *      init rsnd_dai
 850                  */
 851                 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
 852                 rdai[i].priv = priv;
 853
 854                 /*
 855                  *      init snd_soc_dai_driver
 856                  */
 857                 drv[i].name     = rdai[i].name;
 858                 drv[i].ops      = &rsnd_soc_dai_ops;
 859                 if (pmod) {
 860                         snprintf(rdai[i].playback.name, RSND_DAI_NAME_SIZE,
 861                                  "DAI%d Playback", i);
 862
 863                         drv[i].playback.rates           = RSND_RATES;
 864                         drv[i].playback.formats         = RSND_FMTS;
 865                         drv[i].playback.channels_min    = 2;
 866                         drv[i].playback.channels_max    = 2;
 867                         drv[i].playback.stream_name     = rdai[i].playback.name;
 868
 869                         rdai[i].playback.info = &info->dai_info[i].playback;
 870                         rdai[i].playback.rdai = rdai + i;
 871                         rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
 872                 }
 873                 if (cmod) {
 874                         snprintf(rdai[i].capture.name, RSND_DAI_NAME_SIZE,
 875                                  "DAI%d Capture", i);
 876
 877                         drv[i].capture.rates            = RSND_RATES;
 878                         drv[i].capture.formats          = RSND_FMTS;
 879                         drv[i].capture.channels_min     = 2;
 880                         drv[i].capture.channels_max     = 2;
 881                         drv[i].capture.stream_name      = rdai[i].capture.name;
 882
 883                         rdai[i].capture.info = &info->dai_info[i].capture;
 884                         rdai[i].capture.rdai = rdai + i;
 885                         rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
 886                 }
 887
 888                 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
 889                         pmod ? "play"    : " -- ",
 890                         cmod ? "capture" : "  --   ");
 891         }
 892
 893         return 0;
 894 }
 895
 896 /*
 897  *              pcm ops
 898  */
 899 static struct snd_pcm_hardware rsnd_pcm_hardware = {
 900         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 901                         SNDRV_PCM_INFO_MMAP             |
 902                         SNDRV_PCM_INFO_MMAP_VALID,
 903         .buffer_bytes_max       = 64 * 1024,
 904         .period_bytes_min       = 32,
 905         .period_bytes_max       = 8192,
 906         .periods_min            = 1,
 907         .periods_max            = 32,
 908         .fifo_size              = 256,
 909 };
 910
 911 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
 912 {
 913         struct snd_pcm_runtime *runtime = substream->runtime;
 914         int ret = 0;
 915
 916         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 917
 918         ret = snd_pcm_hw_constraint_integer(runtime,
 919                                             SNDRV_PCM_HW_PARAM_PERIODS);
 920
 921         return ret;
 922 }
 923
 924 static int rsnd_hw_params(struct snd_pcm_substream *substream,
 925                          struct snd_pcm_hw_params *hw_params)
 926 {
 927         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
 928         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 929         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 930         int ret;
 931
 932         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
 933         if (ret)
 934                 return ret;
 935
 936         return snd_pcm_lib_malloc_pages(substream,
 937                                         params_buffer_bytes(hw_params));
 938 }
 939
 940 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
 941 {
 942         struct snd_pcm_runtime *runtime = substream->runtime;
 943         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
 944         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 945         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 946
 947         return bytes_to_frames(runtime, io->byte_pos);
 948 }
 949
 950 static struct snd_pcm_ops rsnd_pcm_ops = {
 951         .open           = rsnd_pcm_open,
 952         .ioctl          = snd_pcm_lib_ioctl,
 953         .hw_params      = rsnd_hw_params,
 954         .hw_free        = snd_pcm_lib_free_pages,
 955         .pointer        = rsnd_pointer,
 956 };
 957
 958 /*
 959  *              snd_kcontrol
 960  */
 961 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
 962 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
 963                            struct snd_ctl_elem_info *uinfo)
 964 {
 965         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
 966
 967         if (cfg->texts) {
 968                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 969                 uinfo->count = cfg->size;
 970                 uinfo->value.enumerated.items = cfg->max;
 971                 if (uinfo->value.enumerated.item >= cfg->max)
 972                         uinfo->value.enumerated.item = cfg->max - 1;
 973                 strlcpy(uinfo->value.enumerated.name,
 974                         cfg->texts[uinfo->value.enumerated.item],
 975                         sizeof(uinfo->value.enumerated.name));
 976         } else {
 977                 uinfo->count = cfg->size;
 978                 uinfo->value.integer.min = 0;
 979                 uinfo->value.integer.max = cfg->max;
 980                 uinfo->type = (cfg->max == 1) ?
 981                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
 982                         SNDRV_CTL_ELEM_TYPE_INTEGER;
 983         }
 984
 985         return 0;
 986 }
 987
 988 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
 989                           struct snd_ctl_elem_value *uc)
 990 {
 991         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
 992         int i;
 993
 994         for (i = 0; i < cfg->size; i++)
 995                 if (cfg->texts)
 996                         uc->value.enumerated.item[i] = cfg->val[i];
 997                 else
 998                         uc->value.integer.value[i] = cfg->val[i];
 999
1000         return 0;
1001 }
1002
1003 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1004                           struct snd_ctl_elem_value *uc)
1005 {
1006         struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
1007         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1008         int i, change = 0;
1009
1010         for (i = 0; i < cfg->size; i++) {
1011                 if (cfg->texts) {
1012                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1013                         cfg->val[i] = uc->value.enumerated.item[i];
1014                 } else {
1015                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1016                         cfg->val[i] = uc->value.integer.value[i];
1017                 }
1018         }
1019
1020         if (change && cfg->update)
1021                 cfg->update(cfg->io, mod);
1022
1023         return change;
1024 }
1025
1026 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1027                             struct rsnd_dai_stream *io,
1028                             struct snd_soc_pcm_runtime *rtd,
1029                             const unsigned char *name,
1030                             struct rsnd_kctrl_cfg *cfg,
1031                             void (*update)(struct rsnd_dai_stream *io,
1032                                            struct rsnd_mod *mod))
1033 {
1034         struct snd_soc_card *soc_card = rtd->card;
1035         struct snd_card *card = rtd->card->snd_card;
1036         struct snd_kcontrol *kctrl;
1037         struct snd_kcontrol_new knew = {
1038                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1039                 .name           = name,
1040                 .info           = rsnd_kctrl_info,
1041                 .index          = rtd - soc_card->rtd,
1042                 .get            = rsnd_kctrl_get,
1043                 .put            = rsnd_kctrl_put,
1044                 .private_value  = (unsigned long)cfg,
1045         };
1046         int ret;
1047
1048         kctrl = snd_ctl_new1(&knew, mod);
1049         if (!kctrl)
1050                 return -ENOMEM;
1051
1052         ret = snd_ctl_add(card, kctrl);
1053         if (ret < 0)
1054                 return ret;
1055
1056         cfg->update = update;
1057         cfg->card = card;
1058         cfg->kctrl = kctrl;
1059         cfg->io = io;
1060
1061         return 0;
1062 }
1063
1064 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1065 {
1066         snd_ctl_remove(cfg->card, cfg->kctrl);
1067 }
1068
1069 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1070                      struct rsnd_dai_stream *io,
1071                      struct snd_soc_pcm_runtime *rtd,
1072                      const unsigned char *name,
1073                      void (*update)(struct rsnd_dai_stream *io,
1074                                     struct rsnd_mod *mod),
1075                      struct rsnd_kctrl_cfg_m *_cfg,
1076                      u32 max)
1077 {
1078         _cfg->cfg.max   = max;
1079         _cfg->cfg.size  = RSND_DVC_CHANNELS;
1080         _cfg->cfg.val   = _cfg->val;
1081         return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1082 }
1083
1084 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1085                      struct rsnd_dai_stream *io,
1086                      struct snd_soc_pcm_runtime *rtd,
1087                      const unsigned char *name,
1088                      void (*update)(struct rsnd_dai_stream *io,
1089                                     struct rsnd_mod *mod),
1090                      struct rsnd_kctrl_cfg_s *_cfg,
1091                      u32 max)
1092 {
1093         _cfg->cfg.max   = max;
1094         _cfg->cfg.size  = 1;
1095         _cfg->cfg.val   = &_cfg->val;
1096         return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1097 }
1098
1099 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1100                      struct rsnd_dai_stream *io,
1101                      struct snd_soc_pcm_runtime *rtd,
1102                      const unsigned char *name,
1103                      struct rsnd_kctrl_cfg_s *_cfg,
1104                      void (*update)(struct rsnd_dai_stream *io,
1105                                     struct rsnd_mod *mod),
1106                      const char * const *texts,
1107                      u32 max)
1108 {
1109         _cfg->cfg.max   = max;
1110         _cfg->cfg.size  = 1;
1111         _cfg->cfg.val   = &_cfg->val;
1112         _cfg->cfg.texts = texts;
1113         return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1114 }
1115
1116 /*
1117  *              snd_soc_platform
1118  */
1119
1120 #define PREALLOC_BUFFER         (32 * 1024)
1121 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1122
1123 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1124 {
1125         struct snd_soc_dai *dai = rtd->cpu_dai;
1126         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1127         int ret;
1128
1129         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1130         if (ret)
1131                 return ret;
1132
1133         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1134         if (ret)
1135                 return ret;
1136
1137         return snd_pcm_lib_preallocate_pages_for_all(
1138                 rtd->pcm,
1139                 SNDRV_DMA_TYPE_DEV,
1140                 rtd->card->snd_card->dev,
1141                 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1142 }
1143
1144 static struct snd_soc_platform_driver rsnd_soc_platform = {
1145         .ops            = &rsnd_pcm_ops,
1146         .pcm_new        = rsnd_pcm_new,
1147 };
1148
1149 static const struct snd_soc_component_driver rsnd_soc_component = {
1150         .name           = "rsnd",
1151 };
1152
1153 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1154                                        struct rsnd_dai_stream *io)
1155 {
1156         int ret;
1157
1158         ret = rsnd_dai_call(probe, io, priv);
1159         if (ret == -EAGAIN) {
1160                 /*
1161                  * Fallback to PIO mode
1162                  */
1163
1164                 /*
1165                  * call "remove" for SSI/SRC/DVC
1166                  * SSI will be switch to PIO mode if it was DMA mode
1167                  * see
1168                  *      rsnd_dma_init()
1169                  *      rsnd_ssi_fallback()
1170                  */
1171                 rsnd_dai_call(remove, io, priv);
1172
1173                 /*
1174                  * remove SRC/DVC from DAI,
1175                  */
1176                 rsnd_path_remove(priv, io, src);
1177                 rsnd_path_remove(priv, io, dvc);
1178
1179                 /*
1180                  * fallback
1181                  */
1182                 rsnd_dai_call(fallback, io, priv);
1183
1184                 /*
1185                  * retry to "probe".
1186                  * DAI has SSI which is PIO mode only now.
1187                  */
1188                 ret = rsnd_dai_call(probe, io, priv);
1189         }
1190
1191         return ret;
1192 }
1193
1194 /*
1195  *      rsnd probe
1196  */
1197 static int rsnd_probe(struct platform_device *pdev)
1198 {
1199         struct rcar_snd_info *info;
1200         struct rsnd_priv *priv;
1201         struct device *dev = &pdev->dev;
1202         struct rsnd_dai *rdai;
1203         const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
1204         const struct rsnd_of_data *of_data;
1205         int (*probe_func[])(struct platform_device *pdev,
1206                             const struct rsnd_of_data *of_data,
1207                             struct rsnd_priv *priv) = {
1208                 rsnd_gen_probe,
1209                 rsnd_dma_probe,
1210                 rsnd_ssi_probe,
1211                 rsnd_src_probe,
1212                 rsnd_ctu_probe,
1213                 rsnd_mix_probe,
1214                 rsnd_dvc_probe,
1215                 rsnd_adg_probe,
1216                 rsnd_dai_probe,
1217         };
1218         int ret, i;
1219
1220         info = devm_kzalloc(&pdev->dev, sizeof(struct rcar_snd_info),
1221                             GFP_KERNEL);
1222         if (!info)
1223                 return -ENOMEM;
1224         of_data = of_id->data;
1225
1226         /*
1227          *      init priv data
1228          */
1229         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1230         if (!priv) {
1231                 dev_err(dev, "priv allocate failed\n");
1232                 return -ENODEV;
1233         }
1234
1235         priv->pdev      = pdev;
1236         priv->info      = info;
1237         spin_lock_init(&priv->lock);
1238
1239         /*
1240          *      init each module
1241          */
1242         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1243                 ret = probe_func[i](pdev, of_data, priv);
1244                 if (ret)
1245                         return ret;
1246         }
1247
1248         for_each_rsnd_dai(rdai, priv, i) {
1249                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1250                 if (ret)
1251                         goto exit_snd_probe;
1252
1253                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1254                 if (ret)
1255                         goto exit_snd_probe;
1256         }
1257
1258         dev_set_drvdata(dev, priv);
1259
1260         /*
1261          *      asoc register
1262          */
1263         ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1264         if (ret < 0) {
1265                 dev_err(dev, "cannot snd soc register\n");
1266                 return ret;
1267         }
1268
1269         ret = snd_soc_register_component(dev, &rsnd_soc_component,
1270                                          priv->daidrv, rsnd_rdai_nr(priv));
1271         if (ret < 0) {
1272                 dev_err(dev, "cannot snd dai register\n");
1273                 goto exit_snd_soc;
1274         }
1275
1276         pm_runtime_enable(dev);
1277
1278         dev_info(dev, "probed\n");
1279         return ret;
1280
1281 exit_snd_soc:
1282         snd_soc_unregister_platform(dev);
1283 exit_snd_probe:
1284         for_each_rsnd_dai(rdai, priv, i) {
1285                 rsnd_dai_call(remove, &rdai->playback, priv);
1286                 rsnd_dai_call(remove, &rdai->capture, priv);
1287         }
1288
1289         return ret;
1290 }
1291
1292 static int rsnd_remove(struct platform_device *pdev)
1293 {
1294         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1295         struct rsnd_dai *rdai;
1296         void (*remove_func[])(struct platform_device *pdev,
1297                               struct rsnd_priv *priv) = {
1298                 rsnd_ssi_remove,
1299                 rsnd_src_remove,
1300                 rsnd_ctu_remove,
1301                 rsnd_mix_remove,
1302                 rsnd_dvc_remove,
1303         };
1304         int ret = 0, i;
1305
1306         pm_runtime_disable(&pdev->dev);
1307
1308         for_each_rsnd_dai(rdai, priv, i) {
1309                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1310                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1311         }
1312
1313         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1314                 remove_func[i](pdev, priv);
1315
1316         snd_soc_unregister_component(&pdev->dev);
1317         snd_soc_unregister_platform(&pdev->dev);
1318
1319         return ret;
1320 }
1321
1322 static struct platform_driver rsnd_driver = {
1323         .driver = {
1324                 .name   = "rcar_sound",
1325                 .of_match_table = rsnd_of_match,
1326         },
1327         .probe          = rsnd_probe,
1328         .remove         = rsnd_remove,
1329 };
1330 module_platform_driver(rsnd_driver);
1331
1332 MODULE_LICENSE("GPL");
1333 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1334 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1335 MODULE_ALIAS("platform:rcar-pcm-audio");