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