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 of_device_id rsnd_of_match[] = {
 103         { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
 104         { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
 105         { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN2 }, /* gen2 compatible */
 106         {},
 107 };
 108 MODULE_DEVICE_TABLE(of, rsnd_of_match);
 109
 110 /*
 111  *      rsnd_mod functions
 112  */
 113 #ifdef DEBUG
 114 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
 115 {
 116         if (mod->type != type) {
 117                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 118                 struct device *dev = rsnd_priv_to_dev(priv);
 119
 120                 dev_warn(dev, "%s[%d] is not your expected module\n",
 121                          rsnd_mod_name(mod), rsnd_mod_id(mod));
 122         }
 123 }
 124 #endif
 125
 126 char *rsnd_mod_name(struct rsnd_mod *mod)
 127 {
 128         if (!mod || !mod->ops)
 129                 return "unknown";
 130
 131         return mod->ops->name;
 132 }
 133
 134 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
 135                                   struct rsnd_mod *mod)
 136 {
 137         if (!mod || !mod->ops || !mod->ops->dma_req)
 138                 return NULL;
 139
 140         return mod->ops->dma_req(io, mod);
 141 }
 142
 143 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
 144                          struct rsnd_mod *mod,
 145                          enum rsnd_mod_type type)
 146 {
 147         return &mod->status;
 148 }
 149
 150 int rsnd_mod_init(struct rsnd_priv *priv,
 151                   struct rsnd_mod *mod,
 152                   struct rsnd_mod_ops *ops,
 153                   struct clk *clk,
 154                   u32* (*get_status)(struct rsnd_dai_stream *io,
 155                                      struct rsnd_mod *mod,
 156                                      enum rsnd_mod_type type),
 157                   enum rsnd_mod_type type,
 158                   int id)
 159 {
 160         int ret = clk_prepare(clk);
 161
 162         if (ret)
 163                 return ret;
 164
 165         mod->id         = id;
 166         mod->ops        = ops;
 167         mod->type       = type;
 168         mod->clk        = clk;
 169         mod->priv       = priv;
 170         mod->get_status = get_status;
 171
 172         return ret;
 173 }
 174
 175 void rsnd_mod_quit(struct rsnd_mod *mod)
 176 {
 177         if (mod->clk)
 178                 clk_unprepare(mod->clk);
 179         mod->clk = NULL;
 180 }
 181
 182 void rsnd_mod_interrupt(struct rsnd_mod *mod,
 183                         void (*callback)(struct rsnd_mod *mod,
 184                                          struct rsnd_dai_stream *io))
 185 {
 186         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 187         struct rsnd_dai_stream *io;
 188         struct rsnd_dai *rdai;
 189         int i;
 190
 191         for_each_rsnd_dai(rdai, priv, i) {
 192                 io = &rdai->playback;
 193                 if (mod == io->mod[mod->type])
 194                         callback(mod, io);
 195
 196                 io = &rdai->capture;
 197                 if (mod == io->mod[mod->type])
 198                         callback(mod, io);
 199         }
 200 }
 201
 202 int rsnd_io_is_working(struct rsnd_dai_stream *io)
 203 {
 204         /* see rsnd_dai_stream_init/quit() */
 205         return !!io->substream;
 206 }
 207
 208 void rsnd_set_slot(struct rsnd_dai *rdai,
 209                    int slots, int num)
 210 {
 211         rdai->slots     = slots;
 212         rdai->slots_num = num;
 213 }
 214
 215 int rsnd_get_slot(struct rsnd_dai_stream *io)
 216 {
 217         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 218
 219         return rdai->slots;
 220 }
 221
 222 int rsnd_get_slot_num(struct rsnd_dai_stream *io)
 223 {
 224         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 225
 226         return rdai->slots_num;
 227 }
 228
 229 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
 230 {
 231         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 232
 233         return runtime->channels;
 234 }
 235
 236 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
 237 {
 238         int chan = rsnd_runtime_channel_original(io);
 239         struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
 240
 241         if (ctu_mod) {
 242                 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
 243
 244                 if (converted_chan)
 245                         return converted_chan;
 246         }
 247
 248         return chan;
 249 }
 250
 251 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
 252 {
 253         int chan = rsnd_io_is_play(io) ?
 254                 rsnd_runtime_channel_after_ctu(io) :
 255                 rsnd_runtime_channel_original(io);
 256
 257         /* Use Multi SSI */
 258         if (rsnd_runtime_is_ssi_multi(io))
 259                 chan /= rsnd_get_slot_num(io);
 260
 261         /* TDM Extend Mode needs 8ch */
 262         if (chan == 6)
 263                 chan = 8;
 264
 265         return chan;
 266 }
 267
 268 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
 269 {
 270         int slots = rsnd_get_slot_num(io);
 271         int chan = rsnd_io_is_play(io) ?
 272                 rsnd_runtime_channel_after_ctu(io) :
 273                 rsnd_runtime_channel_original(io);
 274
 275         return (chan >= 6) && (slots > 1);
 276 }
 277
 278 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
 279 {
 280         return rsnd_runtime_channel_for_ssi(io) >= 6;
 281 }
 282
 283 /*
 284  *      ADINR function
 285  */
 286 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 287 {
 288         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 289         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 290         struct device *dev = rsnd_priv_to_dev(priv);
 291
 292         switch (runtime->sample_bits) {
 293         case 16:
 294                 return 8 << 16;
 295         case 32:
 296                 return 0 << 16;
 297         }
 298
 299         dev_warn(dev, "not supported sample bits\n");
 300
 301         return 0;
 302 }
 303
 304 /*
 305  *      DALIGN function
 306  */
 307 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 308 {
 309         struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
 310         struct rsnd_mod *target;
 311         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 312         u32 val = 0x76543210;
 313         u32 mask = ~0;
 314
 315         if (rsnd_io_is_play(io)) {
 316                 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 317
 318                 target = src ? src : ssiu;
 319         } else {
 320                 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
 321
 322                 target = cmd ? cmd : ssiu;
 323         }
 324
 325         mask <<= runtime->channels * 4;
 326         val = val & mask;
 327
 328         switch (runtime->sample_bits) {
 329         case 16:
 330                 val |= 0x67452301 & ~mask;
 331                 break;
 332         case 32:
 333                 val |= 0x76543210 & ~mask;
 334                 break;
 335         }
 336
 337         /*
 338          * exchange channeles on SRC if possible,
 339          * otherwise, R/L volume settings on DVC
 340          * changes inverted channels
 341          */
 342         if (mod == target)
 343                 return val;
 344         else
 345                 return 0x76543210;
 346 }
 347
 348 /*
 349  *      rsnd_dai functions
 350  */
 351 struct rsnd_mod *rsnd_mod_next(int *iterator,
 352                                struct rsnd_dai_stream *io,
 353                                enum rsnd_mod_type *array,
 354                                int array_size)
 355 {
 356         struct rsnd_mod *mod;
 357         enum rsnd_mod_type type;
 358         int max = array ? array_size : RSND_MOD_MAX;
 359
 360         for (; *iterator < max; (*iterator)++) {
 361                 type = (array) ? array[*iterator] : *iterator;
 362                 mod = io->mod[type];
 363                 if (!mod)
 364                         continue;
 365
 366                 return mod;
 367         }
 368
 369         return NULL;
 370 }
 371
 372 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
 373         {
 374                 /* CAPTURE */
 375                 RSND_MOD_AUDMAPP,
 376                 RSND_MOD_AUDMA,
 377                 RSND_MOD_DVC,
 378                 RSND_MOD_MIX,
 379                 RSND_MOD_CTU,
 380                 RSND_MOD_CMD,
 381                 RSND_MOD_SRC,
 382                 RSND_MOD_SSIU,
 383                 RSND_MOD_SSIM3,
 384                 RSND_MOD_SSIM2,
 385                 RSND_MOD_SSIM1,
 386                 RSND_MOD_SSIP,
 387                 RSND_MOD_SSI,
 388         }, {
 389                 /* PLAYBACK */
 390                 RSND_MOD_AUDMAPP,
 391                 RSND_MOD_AUDMA,
 392                 RSND_MOD_SSIM3,
 393                 RSND_MOD_SSIM2,
 394                 RSND_MOD_SSIM1,
 395                 RSND_MOD_SSIP,
 396                 RSND_MOD_SSI,
 397                 RSND_MOD_SSIU,
 398                 RSND_MOD_DVC,
 399                 RSND_MOD_MIX,
 400                 RSND_MOD_CTU,
 401                 RSND_MOD_CMD,
 402                 RSND_MOD_SRC,
 403         },
 404 };
 405
 406 static int rsnd_status_update(u32 *status,
 407                               int shift, int add, int timing)
 408 {
 409         u32 mask        = 0xF << shift;
 410         u8 val          = (*status >> shift) & 0xF;
 411         u8 next_val     = (val + add) & 0xF;
 412         int func_call   = (val == timing);
 413
 414         if (next_val == 0xF) /* underflow case */
 415                 func_call = 0;
 416         else
 417                 *status = (*status & ~mask) + (next_val << shift);
 418
 419         return func_call;
 420 }
 421
 422 #define rsnd_dai_call(fn, io, param...)                                 \
 423 ({                                                                      \
 424         struct rsnd_priv *priv = rsnd_io_to_priv(io);                   \
 425         struct device *dev = rsnd_priv_to_dev(priv);                    \
 426         struct rsnd_mod *mod;                                           \
 427         int is_play = rsnd_io_is_play(io);                              \
 428         int ret = 0, i;                                                 \
 429         enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
 430         for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
 431                 int tmp = 0;                                            \
 432                 u32 *status = mod->get_status(io, mod, types[i]);       \
 433                 int func_call = rsnd_status_update(status,              \
 434                                                 __rsnd_mod_shift_##fn,  \
 435                                                 __rsnd_mod_add_##fn,    \
 436                                                 __rsnd_mod_call_##fn);  \
 437                 dev_dbg(dev, "%s[%d]\t0x%08x %s\n",                     \
 438                         rsnd_mod_name(mod), rsnd_mod_id(mod), *status,  \
 439                         (func_call && (mod)->ops->fn) ? #fn : "");      \
 440                 if (func_call && (mod)->ops->fn)                        \
 441                         tmp = (mod)->ops->fn(mod, io, param);           \
 442                 if (tmp)                                                \
 443                         dev_err(dev, "%s[%d] : %s error %d\n",          \
 444                                 rsnd_mod_name(mod), rsnd_mod_id(mod),   \
 445                                                      #fn, tmp);         \
 446                 ret |= tmp;                                             \
 447         }                                                               \
 448         ret;                                                            \
 449 })
 450
 451 int rsnd_dai_connect(struct rsnd_mod *mod,
 452                      struct rsnd_dai_stream *io,
 453                      enum rsnd_mod_type type)
 454 {
 455         struct rsnd_priv *priv;
 456         struct device *dev;
 457
 458         if (!mod)
 459                 return -EIO;
 460
 461         if (io->mod[type] == mod)
 462                 return 0;
 463
 464         if (io->mod[type])
 465                 return -EINVAL;
 466
 467         priv = rsnd_mod_to_priv(mod);
 468         dev = rsnd_priv_to_dev(priv);
 469
 470         io->mod[type] = mod;
 471
 472         dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
 473                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 474                 rsnd_io_is_play(io) ? "Playback" : "Capture");
 475
 476         return 0;
 477 }
 478
 479 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 480                                 struct rsnd_dai_stream *io,
 481                                 enum rsnd_mod_type type)
 482 {
 483         io->mod[type] = NULL;
 484 }
 485
 486 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 487 {
 488         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 489                 return NULL;
 490
 491         return priv->rdai + id;
 492 }
 493
 494 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
 495 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 496 {
 497         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 498
 499         return rsnd_rdai_get(priv, dai->id);
 500 }
 501
 502 /*
 503  *      rsnd_soc_dai functions
 504  */
 505 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
 506 {
 507         struct snd_pcm_substream *substream = io->substream;
 508         struct snd_pcm_runtime *runtime = substream->runtime;
 509         int pos = io->byte_pos + additional;
 510
 511         pos %= (runtime->periods * io->byte_per_period);
 512
 513         return pos;
 514 }
 515
 516 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
 517 {
 518         io->byte_pos += byte;
 519
 520         if (io->byte_pos >= io->next_period_byte) {
 521                 struct snd_pcm_substream *substream = io->substream;
 522                 struct snd_pcm_runtime *runtime = substream->runtime;
 523
 524                 io->period_pos++;
 525                 io->next_period_byte += io->byte_per_period;
 526
 527                 if (io->period_pos >= runtime->periods) {
 528                         io->byte_pos = 0;
 529                         io->period_pos = 0;
 530                         io->next_period_byte = io->byte_per_period;
 531                 }
 532
 533                 return true;
 534         }
 535
 536         return false;
 537 }
 538
 539 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
 540 {
 541         struct snd_pcm_substream *substream = io->substream;
 542
 543         /*
 544          * this function should be called...
 545          *
 546          * - if rsnd_dai_pointer_update() returns true
 547          * - without spin lock
 548          */
 549
 550         snd_pcm_period_elapsed(substream);
 551 }
 552
 553 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 554                                 struct snd_pcm_substream *substream)
 555 {
 556         struct snd_pcm_runtime *runtime = substream->runtime;
 557
 558         io->substream           = substream;
 559         io->byte_pos            = 0;
 560         io->period_pos          = 0;
 561         io->byte_per_period     = runtime->period_size *
 562                                   runtime->channels *
 563                                   samples_to_bytes(runtime, 1);
 564         io->next_period_byte    = io->byte_per_period;
 565 }
 566
 567 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
 568 {
 569         io->substream           = NULL;
 570 }
 571
 572 static
 573 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 574 {
 575         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 576
 577         return  rtd->cpu_dai;
 578 }
 579
 580 static
 581 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 582                                         struct snd_pcm_substream *substream)
 583 {
 584         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 585                 return &rdai->playback;
 586         else
 587                 return &rdai->capture;
 588 }
 589
 590 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 591                             struct snd_soc_dai *dai)
 592 {
 593         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 594         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 595         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 596         int ret;
 597         unsigned long flags;
 598
 599         spin_lock_irqsave(&priv->lock, flags);
 600
 601         switch (cmd) {
 602         case SNDRV_PCM_TRIGGER_START:
 603         case SNDRV_PCM_TRIGGER_RESUME:
 604                 rsnd_dai_stream_init(io, substream);
 605
 606                 ret = rsnd_dai_call(init, io, priv);
 607                 if (ret < 0)
 608                         goto dai_trigger_end;
 609
 610                 ret = rsnd_dai_call(start, io, priv);
 611                 if (ret < 0)
 612                         goto dai_trigger_end;
 613
 614                 ret = rsnd_dai_call(irq, io, priv, 1);
 615                 if (ret < 0)
 616                         goto dai_trigger_end;
 617
 618                 break;
 619         case SNDRV_PCM_TRIGGER_STOP:
 620         case SNDRV_PCM_TRIGGER_SUSPEND:
 621                 ret = rsnd_dai_call(irq, io, priv, 0);
 622
 623                 ret |= rsnd_dai_call(stop, io, priv);
 624
 625                 ret |= rsnd_dai_call(quit, io, priv);
 626
 627                 rsnd_dai_stream_quit(io);
 628                 break;
 629         default:
 630                 ret = -EINVAL;
 631         }
 632
 633 dai_trigger_end:
 634         spin_unlock_irqrestore(&priv->lock, flags);
 635
 636         return ret;
 637 }
 638
 639 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 640 {
 641         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 642
 643         /* set master/slave audio interface */
 644         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 645         case SND_SOC_DAIFMT_CBM_CFM:
 646                 rdai->clk_master = 0;
 647                 break;
 648         case SND_SOC_DAIFMT_CBS_CFS:
 649                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 650                 break;
 651         default:
 652                 return -EINVAL;
 653         }
 654
 655         /* set format */
 656         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 657         case SND_SOC_DAIFMT_I2S:
 658                 rdai->sys_delay = 0;
 659                 rdai->data_alignment = 0;
 660                 rdai->frm_clk_inv = 0;
 661                 break;
 662         case SND_SOC_DAIFMT_LEFT_J:
 663                 rdai->sys_delay = 1;
 664                 rdai->data_alignment = 0;
 665                 rdai->frm_clk_inv = 1;
 666                 break;
 667         case SND_SOC_DAIFMT_RIGHT_J:
 668                 rdai->sys_delay = 1;
 669                 rdai->data_alignment = 1;
 670                 rdai->frm_clk_inv = 1;
 671                 break;
 672         }
 673
 674         /* set clock inversion */
 675         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 676         case SND_SOC_DAIFMT_NB_IF:
 677                 rdai->bit_clk_inv =  rdai->bit_clk_inv;
 678                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 679                 break;
 680         case SND_SOC_DAIFMT_IB_NF:
 681                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 682                 rdai->frm_clk_inv =  rdai->frm_clk_inv;
 683                 break;
 684         case SND_SOC_DAIFMT_IB_IF:
 685                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 686                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 687                 break;
 688         case SND_SOC_DAIFMT_NB_NF:
 689         default:
 690                 break;
 691         }
 692
 693         return 0;
 694 }
 695
 696 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 697                                      u32 tx_mask, u32 rx_mask,
 698                                      int slots, int slot_width)
 699 {
 700         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 701         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 702         struct device *dev = rsnd_priv_to_dev(priv);
 703
 704         switch (slots) {
 705         case 6:
 706                 /* TDM Extend Mode */
 707                 rsnd_set_slot(rdai, slots, 1);
 708                 break;
 709         default:
 710                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
 711                 return -EINVAL;
 712         }
 713
 714         return 0;
 715 }
 716
 717 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
 718                                 struct snd_soc_dai *dai)
 719 {
 720         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 721         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 722
 723         /*
 724          * call rsnd_dai_call without spinlock
 725          */
 726         return rsnd_dai_call(nolock_start, io, priv);
 727 }
 728
 729 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
 730                                   struct snd_soc_dai *dai)
 731 {
 732         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 733         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 734
 735         /*
 736          * call rsnd_dai_call without spinlock
 737          */
 738         rsnd_dai_call(nolock_stop, io, priv);
 739 }
 740
 741 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
 742         .startup        = rsnd_soc_dai_startup,
 743         .shutdown       = rsnd_soc_dai_shutdown,
 744         .trigger        = rsnd_soc_dai_trigger,
 745         .set_fmt        = rsnd_soc_dai_set_fmt,
 746         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
 747 };
 748
 749 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
 750                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
 751                 struct device_node *node,
 752                 struct device_node *playback,
 753                 struct device_node *capture)
 754 {
 755         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 756         struct device_node *np;
 757         struct rsnd_mod *mod;
 758         int i;
 759
 760         if (!node)
 761                 return;
 762
 763         i = 0;
 764         for_each_child_of_node(node, np) {
 765                 mod = mod_get(priv, i);
 766                 if (np == playback)
 767                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
 768                 if (np == capture)
 769                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
 770                 i++;
 771         }
 772
 773         of_node_put(node);
 774 }
 775
 776 static int rsnd_dai_probe(struct rsnd_priv *priv)
 777 {
 778         struct device_node *dai_node;
 779         struct device_node *dai_np;
 780         struct device_node *playback, *capture;
 781         struct rsnd_dai_stream *io_playback;
 782         struct rsnd_dai_stream *io_capture;
 783         struct snd_soc_dai_driver *rdrv, *drv;
 784         struct rsnd_dai *rdai;
 785         struct device *dev = rsnd_priv_to_dev(priv);
 786         int nr, dai_i, io_i;
 787         int ret;
 788
 789         dai_node = rsnd_dai_of_node(priv);
 790         nr = of_get_child_count(dai_node);
 791         if (!nr) {
 792                 ret = -EINVAL;
 793                 goto rsnd_dai_probe_done;
 794         }
 795
 796         rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
 797         rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
 798         if (!rdrv || !rdai) {
 799                 ret = -ENOMEM;
 800                 goto rsnd_dai_probe_done;
 801         }
 802
 803         priv->rdai_nr   = nr;
 804         priv->daidrv    = rdrv;
 805         priv->rdai      = rdai;
 806
 807         /*
 808          * parse all dai
 809          */
 810         dai_i = 0;
 811         for_each_child_of_node(dai_node, dai_np) {
 812                 rdai            = rsnd_rdai_get(priv, dai_i);
 813                 drv             = rdrv + dai_i;
 814                 io_playback     = &rdai->playback;
 815                 io_capture      = &rdai->capture;
 816
 817                 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
 818
 819                 rdai->priv      = priv;
 820                 drv->name       = rdai->name;
 821                 drv->ops        = &rsnd_soc_dai_ops;
 822
 823                 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
 824                          "DAI%d Playback", dai_i);
 825                 drv->playback.rates             = RSND_RATES;
 826                 drv->playback.formats           = RSND_FMTS;
 827                 drv->playback.channels_min      = 2;
 828                 drv->playback.channels_max      = 6;
 829                 drv->playback.stream_name       = rdai->playback.name;
 830
 831                 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
 832                          "DAI%d Capture", dai_i);
 833                 drv->capture.rates              = RSND_RATES;
 834                 drv->capture.formats            = RSND_FMTS;
 835                 drv->capture.channels_min       = 2;
 836                 drv->capture.channels_max       = 6;
 837                 drv->capture.stream_name        = rdai->capture.name;
 838
 839                 rdai->playback.rdai             = rdai;
 840                 rdai->capture.rdai              = rdai;
 841                 rsnd_set_slot(rdai, 2, 1); /* default */
 842
 843                 for (io_i = 0;; io_i++) {
 844                         playback = of_parse_phandle(dai_np, "playback", io_i);
 845                         capture  = of_parse_phandle(dai_np, "capture", io_i);
 846
 847                         if (!playback && !capture)
 848                                 break;
 849
 850                         rsnd_parse_connect_ssi(rdai, playback, capture);
 851                         rsnd_parse_connect_src(rdai, playback, capture);
 852                         rsnd_parse_connect_ctu(rdai, playback, capture);
 853                         rsnd_parse_connect_mix(rdai, playback, capture);
 854                         rsnd_parse_connect_dvc(rdai, playback, capture);
 855
 856                         of_node_put(playback);
 857                         of_node_put(capture);
 858                 }
 859
 860                 dai_i++;
 861
 862                 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
 863                         rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
 864                         rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
 865         }
 866
 867         ret = 0;
 868
 869 rsnd_dai_probe_done:
 870         of_node_put(dai_node);
 871
 872         return ret;
 873 }
 874
 875 /*
 876  *              pcm ops
 877  */
 878 static struct snd_pcm_hardware rsnd_pcm_hardware = {
 879         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 880                         SNDRV_PCM_INFO_MMAP             |
 881                         SNDRV_PCM_INFO_MMAP_VALID,
 882         .buffer_bytes_max       = 64 * 1024,
 883         .period_bytes_min       = 32,
 884         .period_bytes_max       = 8192,
 885         .periods_min            = 1,
 886         .periods_max            = 32,
 887         .fifo_size              = 256,
 888 };
 889
 890 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
 891 {
 892         struct snd_pcm_runtime *runtime = substream->runtime;
 893         int ret = 0;
 894
 895         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 896
 897         ret = snd_pcm_hw_constraint_integer(runtime,
 898                                             SNDRV_PCM_HW_PARAM_PERIODS);
 899
 900         return ret;
 901 }
 902
 903 static int rsnd_hw_params(struct snd_pcm_substream *substream,
 904                          struct snd_pcm_hw_params *hw_params)
 905 {
 906         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
 907         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 908         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 909         int ret;
 910
 911         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
 912         if (ret)
 913                 return ret;
 914
 915         return snd_pcm_lib_malloc_pages(substream,
 916                                         params_buffer_bytes(hw_params));
 917 }
 918
 919 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
 920 {
 921         struct snd_pcm_runtime *runtime = substream->runtime;
 922         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
 923         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 924         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 925
 926         return bytes_to_frames(runtime, io->byte_pos);
 927 }
 928
 929 static struct snd_pcm_ops rsnd_pcm_ops = {
 930         .open           = rsnd_pcm_open,
 931         .ioctl          = snd_pcm_lib_ioctl,
 932         .hw_params      = rsnd_hw_params,
 933         .hw_free        = snd_pcm_lib_free_pages,
 934         .pointer        = rsnd_pointer,
 935 };
 936
 937 /*
 938  *              snd_kcontrol
 939  */
 940 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
 941 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
 942                            struct snd_ctl_elem_info *uinfo)
 943 {
 944         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
 945
 946         if (cfg->texts) {
 947                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 948                 uinfo->count = cfg->size;
 949                 uinfo->value.enumerated.items = cfg->max;
 950                 if (uinfo->value.enumerated.item >= cfg->max)
 951                         uinfo->value.enumerated.item = cfg->max - 1;
 952                 strlcpy(uinfo->value.enumerated.name,
 953                         cfg->texts[uinfo->value.enumerated.item],
 954                         sizeof(uinfo->value.enumerated.name));
 955         } else {
 956                 uinfo->count = cfg->size;
 957                 uinfo->value.integer.min = 0;
 958                 uinfo->value.integer.max = cfg->max;
 959                 uinfo->type = (cfg->max == 1) ?
 960                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
 961                         SNDRV_CTL_ELEM_TYPE_INTEGER;
 962         }
 963
 964         return 0;
 965 }
 966
 967 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
 968                           struct snd_ctl_elem_value *uc)
 969 {
 970         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
 971         int i;
 972
 973         for (i = 0; i < cfg->size; i++)
 974                 if (cfg->texts)
 975                         uc->value.enumerated.item[i] = cfg->val[i];
 976                 else
 977                         uc->value.integer.value[i] = cfg->val[i];
 978
 979         return 0;
 980 }
 981
 982 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
 983                           struct snd_ctl_elem_value *uc)
 984 {
 985         struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
 986         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
 987         int i, change = 0;
 988
 989         for (i = 0; i < cfg->size; i++) {
 990                 if (cfg->texts) {
 991                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
 992                         cfg->val[i] = uc->value.enumerated.item[i];
 993                 } else {
 994                         change |= (uc->value.integer.value[i] != cfg->val[i]);
 995                         cfg->val[i] = uc->value.integer.value[i];
 996                 }
 997         }
 998
 999         if (change && cfg->update)
1000                 cfg->update(cfg->io, mod);
1001
1002         return change;
1003 }
1004
1005 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1006                             struct rsnd_dai_stream *io,
1007                             struct snd_soc_pcm_runtime *rtd,
1008                             const unsigned char *name,
1009                             struct rsnd_kctrl_cfg *cfg,
1010                             void (*update)(struct rsnd_dai_stream *io,
1011                                            struct rsnd_mod *mod))
1012 {
1013         struct snd_card *card = rtd->card->snd_card;
1014         struct snd_kcontrol *kctrl;
1015         struct snd_kcontrol_new knew = {
1016                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1017                 .name           = name,
1018                 .info           = rsnd_kctrl_info,
1019                 .index          = rtd->num,
1020                 .get            = rsnd_kctrl_get,
1021                 .put            = rsnd_kctrl_put,
1022                 .private_value  = (unsigned long)cfg,
1023         };
1024         int ret;
1025
1026         kctrl = snd_ctl_new1(&knew, mod);
1027         if (!kctrl)
1028                 return -ENOMEM;
1029
1030         ret = snd_ctl_add(card, kctrl);
1031         if (ret < 0)
1032                 return ret;
1033
1034         cfg->update = update;
1035         cfg->card = card;
1036         cfg->kctrl = kctrl;
1037         cfg->io = io;
1038
1039         return 0;
1040 }
1041
1042 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1043 {
1044         if (cfg->card && cfg->kctrl)
1045                 snd_ctl_remove(cfg->card, cfg->kctrl);
1046
1047         cfg->card = NULL;
1048         cfg->kctrl = NULL;
1049 }
1050
1051 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1052                      struct rsnd_dai_stream *io,
1053                      struct snd_soc_pcm_runtime *rtd,
1054                      const unsigned char *name,
1055                      void (*update)(struct rsnd_dai_stream *io,
1056                                     struct rsnd_mod *mod),
1057                      struct rsnd_kctrl_cfg_m *_cfg,
1058                      int ch_size,
1059                      u32 max)
1060 {
1061         if (ch_size > RSND_MAX_CHANNELS)
1062                 return -EINVAL;
1063
1064         _cfg->cfg.max   = max;
1065         _cfg->cfg.size  = ch_size;
1066         _cfg->cfg.val   = _cfg->val;
1067         return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1068 }
1069
1070 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1071                      struct rsnd_dai_stream *io,
1072                      struct snd_soc_pcm_runtime *rtd,
1073                      const unsigned char *name,
1074                      void (*update)(struct rsnd_dai_stream *io,
1075                                     struct rsnd_mod *mod),
1076                      struct rsnd_kctrl_cfg_s *_cfg,
1077                      u32 max)
1078 {
1079         _cfg->cfg.max   = max;
1080         _cfg->cfg.size  = 1;
1081         _cfg->cfg.val   = &_cfg->val;
1082         return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1083 }
1084
1085 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1086                      struct rsnd_dai_stream *io,
1087                      struct snd_soc_pcm_runtime *rtd,
1088                      const unsigned char *name,
1089                      struct rsnd_kctrl_cfg_s *_cfg,
1090                      void (*update)(struct rsnd_dai_stream *io,
1091                                     struct rsnd_mod *mod),
1092                      const char * const *texts,
1093                      u32 max)
1094 {
1095         _cfg->cfg.max   = max;
1096         _cfg->cfg.size  = 1;
1097         _cfg->cfg.val   = &_cfg->val;
1098         _cfg->cfg.texts = texts;
1099         return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1100 }
1101
1102 /*
1103  *              snd_soc_platform
1104  */
1105
1106 #define PREALLOC_BUFFER         (32 * 1024)
1107 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1108
1109 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1110 {
1111         struct snd_soc_dai *dai = rtd->cpu_dai;
1112         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1113         int ret;
1114
1115         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1116         if (ret)
1117                 return ret;
1118
1119         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1120         if (ret)
1121                 return ret;
1122
1123         return snd_pcm_lib_preallocate_pages_for_all(
1124                 rtd->pcm,
1125                 SNDRV_DMA_TYPE_CONTINUOUS,
1126                 snd_dma_continuous_data(GFP_KERNEL),
1127                 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1128 }
1129
1130 static struct snd_soc_platform_driver rsnd_soc_platform = {
1131         .ops            = &rsnd_pcm_ops,
1132         .pcm_new        = rsnd_pcm_new,
1133 };
1134
1135 static const struct snd_soc_component_driver rsnd_soc_component = {
1136         .name           = "rsnd",
1137 };
1138
1139 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1140                                        struct rsnd_dai_stream *io)
1141 {
1142         int ret;
1143
1144         ret = rsnd_dai_call(probe, io, priv);
1145         if (ret == -EAGAIN) {
1146                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1147                 struct rsnd_mod *mod;
1148                 int i;
1149
1150                 /*
1151                  * Fallback to PIO mode
1152                  */
1153
1154                 /*
1155                  * call "remove" for SSI/SRC/DVC
1156                  * SSI will be switch to PIO mode if it was DMA mode
1157                  * see
1158                  *      rsnd_dma_init()
1159                  *      rsnd_ssi_fallback()
1160                  */
1161                 rsnd_dai_call(remove, io, priv);
1162
1163                 /*
1164                  * remove all mod from io
1165                  * and, re connect ssi
1166                  */
1167                 for_each_rsnd_mod(i, mod, io)
1168                         rsnd_dai_disconnect(mod, io, i);
1169                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1170
1171                 /*
1172                  * fallback
1173                  */
1174                 rsnd_dai_call(fallback, io, priv);
1175
1176                 /*
1177                  * retry to "probe".
1178                  * DAI has SSI which is PIO mode only now.
1179                  */
1180                 ret = rsnd_dai_call(probe, io, priv);
1181         }
1182
1183         return ret;
1184 }
1185
1186 /*
1187  *      rsnd probe
1188  */
1189 static int rsnd_probe(struct platform_device *pdev)
1190 {
1191         struct rsnd_priv *priv;
1192         struct device *dev = &pdev->dev;
1193         struct rsnd_dai *rdai;
1194         int (*probe_func[])(struct rsnd_priv *priv) = {
1195                 rsnd_gen_probe,
1196                 rsnd_dma_probe,
1197                 rsnd_ssi_probe,
1198                 rsnd_ssiu_probe,
1199                 rsnd_src_probe,
1200                 rsnd_ctu_probe,
1201                 rsnd_mix_probe,
1202                 rsnd_dvc_probe,
1203                 rsnd_cmd_probe,
1204                 rsnd_adg_probe,
1205                 rsnd_dai_probe,
1206         };
1207         int ret, i;
1208
1209         /*
1210          *      init priv data
1211          */
1212         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1213         if (!priv) {
1214                 dev_err(dev, "priv allocate failed\n");
1215                 return -ENODEV;
1216         }
1217
1218         priv->pdev      = pdev;
1219         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1220         spin_lock_init(&priv->lock);
1221
1222         /*
1223          *      init each module
1224          */
1225         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1226                 ret = probe_func[i](priv);
1227                 if (ret)
1228                         return ret;
1229         }
1230
1231         for_each_rsnd_dai(rdai, priv, i) {
1232                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1233                 if (ret)
1234                         goto exit_snd_probe;
1235
1236                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1237                 if (ret)
1238                         goto exit_snd_probe;
1239         }
1240
1241         dev_set_drvdata(dev, priv);
1242
1243         /*
1244          *      asoc register
1245          */
1246         ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1247         if (ret < 0) {
1248                 dev_err(dev, "cannot snd soc register\n");
1249                 return ret;
1250         }
1251
1252         ret = snd_soc_register_component(dev, &rsnd_soc_component,
1253                                          priv->daidrv, rsnd_rdai_nr(priv));
1254         if (ret < 0) {
1255                 dev_err(dev, "cannot snd dai register\n");
1256                 goto exit_snd_soc;
1257         }
1258
1259         pm_runtime_enable(dev);
1260
1261         dev_info(dev, "probed\n");
1262         return ret;
1263
1264 exit_snd_soc:
1265         snd_soc_unregister_platform(dev);
1266 exit_snd_probe:
1267         for_each_rsnd_dai(rdai, priv, i) {
1268                 rsnd_dai_call(remove, &rdai->playback, priv);
1269                 rsnd_dai_call(remove, &rdai->capture, priv);
1270         }
1271
1272         return ret;
1273 }
1274
1275 static int rsnd_remove(struct platform_device *pdev)
1276 {
1277         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1278         struct rsnd_dai *rdai;
1279         void (*remove_func[])(struct rsnd_priv *priv) = {
1280                 rsnd_ssi_remove,
1281                 rsnd_ssiu_remove,
1282                 rsnd_src_remove,
1283                 rsnd_ctu_remove,
1284                 rsnd_mix_remove,
1285                 rsnd_dvc_remove,
1286                 rsnd_cmd_remove,
1287                 rsnd_adg_remove,
1288         };
1289         int ret = 0, i;
1290
1291         pm_runtime_disable(&pdev->dev);
1292
1293         for_each_rsnd_dai(rdai, priv, i) {
1294                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1295                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1296         }
1297
1298         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1299                 remove_func[i](priv);
1300
1301         snd_soc_unregister_component(&pdev->dev);
1302         snd_soc_unregister_platform(&pdev->dev);
1303
1304         return ret;
1305 }
1306
1307 static int rsnd_suspend(struct device *dev)
1308 {
1309         struct rsnd_priv *priv = dev_get_drvdata(dev);
1310
1311         rsnd_adg_clk_disable(priv);
1312
1313         return 0;
1314 }
1315
1316 static int rsnd_resume(struct device *dev)
1317 {
1318         struct rsnd_priv *priv = dev_get_drvdata(dev);
1319
1320         rsnd_adg_clk_enable(priv);
1321
1322         return 0;
1323 }
1324
1325 static struct dev_pm_ops rsnd_pm_ops = {
1326         .suspend                = rsnd_suspend,
1327         .resume                 = rsnd_resume,
1328 };
1329
1330 static struct platform_driver rsnd_driver = {
1331         .driver = {
1332                 .name   = "rcar_sound",
1333                 .pm     = &rsnd_pm_ops,
1334                 .of_match_table = rsnd_of_match,
1335         },
1336         .probe          = rsnd_probe,
1337         .remove         = rsnd_remove,
1338 };
1339 module_platform_driver(rsnd_driver);
1340
1341 MODULE_LICENSE("GPL");
1342 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1343 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1344 MODULE_ALIAS("platform:rcar-pcm-audio");