sound/soc/sh/rcar/core.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Renesas R-Car SRU/SCU/SSIU/SSI support
   4 //
   5 // Copyright (C) 2013 Renesas Solutions Corp.
   6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   7 //
   8 // Based on fsi.c
   9 // Kuninori Morimoto <morimoto.kuninori@renesas.com>
  10
  11 /*
  12  * Renesas R-Car sound device structure
  13  *
  14  * Gen1
  15  *
  16  * SRU          : Sound Routing Unit
  17  *  - SRC       : Sampling Rate Converter
  18  *  - CMD
  19  *    - CTU     : Channel Count Conversion Unit
  20  *    - MIX     : Mixer
  21  *    - DVC     : Digital Volume and Mute Function
  22  *  - SSI       : Serial Sound Interface
  23  *
  24  * Gen2
  25  *
  26  * SCU          : Sampling Rate Converter Unit
  27  *  - SRC       : Sampling Rate Converter
  28  *  - CMD
  29  *   - CTU      : Channel Count Conversion Unit
  30  *   - MIX      : Mixer
  31  *   - DVC      : Digital Volume and Mute Function
  32  * SSIU         : Serial Sound Interface Unit
  33  *  - SSI       : Serial Sound Interface
  34  */
  35
  36 /*
  37  *      driver data Image
  38  *
  39  * rsnd_priv
  40  *   |
  41  *   | ** this depends on Gen1/Gen2
  42  *   |
  43  *   +- gen
  44  *   |
  45  *   | ** these depend on data path
  46  *   | ** gen and platform data control it
  47  *   |
  48  *   +- rdai[0]
  49  *   |   |               sru     ssiu      ssi
  50  *   |   +- playback -> [mod] -> [mod] -> [mod] -> ...
  51  *   |   |
  52  *   |   |               sru     ssiu      ssi
  53  *   |   +- capture  -> [mod] -> [mod] -> [mod] -> ...
  54  *   |
  55  *   +- rdai[1]
  56  *   |   |               sru     ssiu      ssi
  57  *   |   +- playback -> [mod] -> [mod] -> [mod] -> ...
  58  *   |   |
  59  *   |   |               sru     ssiu      ssi
  60  *   |   +- capture  -> [mod] -> [mod] -> [mod] -> ...
  61  *   ...
  62  *   |
  63  *   | ** these control ssi
  64  *   |
  65  *   +- ssi
  66  *   |  |
  67  *   |  +- ssi[0]
  68  *   |  +- ssi[1]
  69  *   |  +- ssi[2]
  70  *   |  ...
  71  *   |
  72  *   | ** these control src
  73  *   |
  74  *   +- src
  75  *      |
  76  *      +- src[0]
  77  *      +- src[1]
  78  *      +- src[2]
  79  *      ...
  80  *
  81  *
  82  * for_each_rsnd_dai(xx, priv, xx)
  83  *  rdai[0] => rdai[1] => rdai[2] => ...
  84  *
  85  * for_each_rsnd_mod(xx, rdai, xx)
  86  *  [mod] => [mod] => [mod] => ...
  87  *
  88  * rsnd_dai_call(xxx, fn )
  89  *  [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
  90  *
  91  */
  92
  93 /*
  94  * you can enable below define if you don't need
  95  * DAI status debug message when debugging
  96  * see rsnd_dbg_dai_call()
  97  *
  98  * #define RSND_DEBUG_NO_DAI_CALL 1
  99  */
 100
 101 #include <linux/pm_runtime.h>
 102 #include "rsnd.h"
 103
 104 #define RSND_RATES SNDRV_PCM_RATE_8000_192000
 105 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
 106
 107 static const struct of_device_id rsnd_of_match[] = {
 108         { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
 109         { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
 110         { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 },
 111         {},
 112 };
 113 MODULE_DEVICE_TABLE(of, rsnd_of_match);
 114
 115 /*
 116  *      rsnd_mod functions
 117  */
 118 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
 119 {
 120         if (mod->type != type) {
 121                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 122                 struct device *dev = rsnd_priv_to_dev(priv);
 123
 124                 dev_warn(dev, "%s[%d] is not your expected module\n",
 125                          rsnd_mod_name(mod), rsnd_mod_id(mod));
 126         }
 127 }
 128
 129 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
 130                                   struct rsnd_mod *mod)
 131 {
 132         if (!mod || !mod->ops || !mod->ops->dma_req)
 133                 return NULL;
 134
 135         return mod->ops->dma_req(io, mod);
 136 }
 137
 138 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
 139                          struct rsnd_mod *mod,
 140                          enum rsnd_mod_type type)
 141 {
 142         return &mod->status;
 143 }
 144
 145 int rsnd_mod_init(struct rsnd_priv *priv,
 146                   struct rsnd_mod *mod,
 147                   struct rsnd_mod_ops *ops,
 148                   struct clk *clk,
 149                   u32* (*get_status)(struct rsnd_dai_stream *io,
 150                                      struct rsnd_mod *mod,
 151                                      enum rsnd_mod_type type),
 152                   enum rsnd_mod_type type,
 153                   int id)
 154 {
 155         int ret = clk_prepare(clk);
 156
 157         if (ret)
 158                 return ret;
 159
 160         mod->id         = id;
 161         mod->ops        = ops;
 162         mod->type       = type;
 163         mod->clk        = clk;
 164         mod->priv       = priv;
 165         mod->get_status = get_status;
 166
 167         return ret;
 168 }
 169
 170 void rsnd_mod_quit(struct rsnd_mod *mod)
 171 {
 172         clk_unprepare(mod->clk);
 173         mod->clk = NULL;
 174 }
 175
 176 void rsnd_mod_interrupt(struct rsnd_mod *mod,
 177                         void (*callback)(struct rsnd_mod *mod,
 178                                          struct rsnd_dai_stream *io))
 179 {
 180         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 181         struct rsnd_dai_stream *io;
 182         struct rsnd_dai *rdai;
 183         int i;
 184
 185         for_each_rsnd_dai(rdai, priv, i) {
 186                 io = &rdai->playback;
 187                 if (mod == io->mod[mod->type])
 188                         callback(mod, io);
 189
 190                 io = &rdai->capture;
 191                 if (mod == io->mod[mod->type])
 192                         callback(mod, io);
 193         }
 194 }
 195
 196 int rsnd_io_is_working(struct rsnd_dai_stream *io)
 197 {
 198         /* see rsnd_dai_stream_init/quit() */
 199         if (io->substream)
 200                 return snd_pcm_running(io->substream);
 201
 202         return 0;
 203 }
 204
 205 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io,
 206                                               struct snd_pcm_hw_params *params)
 207 {
 208         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 209
 210         /*
 211          * params will be added when refine
 212          * see
 213          *      __rsnd_soc_hw_rule_rate()
 214          *      __rsnd_soc_hw_rule_channels()
 215          */
 216         if (params)
 217                 return params_channels(params);
 218         else
 219                 return runtime->channels;
 220 }
 221
 222 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io,
 223                                                struct snd_pcm_hw_params *params)
 224 {
 225         int chan = rsnd_runtime_channel_original_with_params(io, params);
 226         struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
 227
 228         if (ctu_mod) {
 229                 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
 230
 231                 if (converted_chan)
 232                         return converted_chan;
 233         }
 234
 235         return chan;
 236 }
 237
 238 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io,
 239                                              struct snd_pcm_hw_params *params)
 240 {
 241         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 242         int chan = rsnd_io_is_play(io) ?
 243                 rsnd_runtime_channel_after_ctu_with_params(io, params) :
 244                 rsnd_runtime_channel_original_with_params(io, params);
 245
 246         /* Use Multi SSI */
 247         if (rsnd_runtime_is_ssi_multi(io))
 248                 chan /= rsnd_rdai_ssi_lane_get(rdai);
 249
 250         /* TDM Extend Mode needs 8ch */
 251         if (chan == 6)
 252                 chan = 8;
 253
 254         return chan;
 255 }
 256
 257 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
 258 {
 259         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 260         int lane = rsnd_rdai_ssi_lane_get(rdai);
 261         int chan = rsnd_io_is_play(io) ?
 262                 rsnd_runtime_channel_after_ctu(io) :
 263                 rsnd_runtime_channel_original(io);
 264
 265         return (chan > 2) && (lane > 1);
 266 }
 267
 268 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
 269 {
 270         return rsnd_runtime_channel_for_ssi(io) >= 6;
 271 }
 272
 273 /*
 274  *      ADINR function
 275  */
 276 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 277 {
 278         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 279         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 280         struct device *dev = rsnd_priv_to_dev(priv);
 281
 282         switch (snd_pcm_format_width(runtime->format)) {
 283         case 16:
 284                 return 8 << 16;
 285         case 24:
 286                 return 0 << 16;
 287         }
 288
 289         dev_warn(dev, "not supported sample bits\n");
 290
 291         return 0;
 292 }
 293
 294 /*
 295  *      DALIGN function
 296  */
 297 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 298 {
 299         struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
 300         struct rsnd_mod *target;
 301         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 302
 303         /*
 304          * *Hardware* L/R and *Software* L/R are inverted for 16bit data.
 305          *          31..16 15...0
 306          *      HW: [L ch] [R ch]
 307          *      SW: [R ch] [L ch]
 308          * We need to care about inversion timing to control
 309          * Playback/Capture correctly.
 310          * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
 311          *
 312          * sL/R : software L/R
 313          * hL/R : hardware L/R
 314          * (*)  : conversion timing
 315          *
 316          * Playback
 317          *           sL/R (*) hL/R     hL/R     hL/R      hL/R     hL/R
 318          *      [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
 319          *
 320          * Capture
 321          *           hL/R     hL/R      hL/R     hL/R     hL/R (*) sL/R
 322          *      codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
 323          */
 324         if (rsnd_io_is_play(io)) {
 325                 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 326
 327                 target = src ? src : ssiu;
 328         } else {
 329                 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
 330
 331                 target = cmd ? cmd : ssiu;
 332         }
 333
 334         /* Non target mod or 24bit data needs normal DALIGN */
 335         if ((snd_pcm_format_width(runtime->format) != 16) ||
 336             (mod != target))
 337                 return 0x76543210;
 338         /* Target mod needs inverted DALIGN when 16bit */
 339         else
 340                 return 0x67452301;
 341 }
 342
 343 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
 344 {
 345         enum rsnd_mod_type playback_mods[] = {
 346                 RSND_MOD_SRC,
 347                 RSND_MOD_CMD,
 348                 RSND_MOD_SSIU,
 349         };
 350         enum rsnd_mod_type capture_mods[] = {
 351                 RSND_MOD_CMD,
 352                 RSND_MOD_SRC,
 353                 RSND_MOD_SSIU,
 354         };
 355         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 356         struct rsnd_mod *tmod = NULL;
 357         enum rsnd_mod_type *mods =
 358                 rsnd_io_is_play(io) ?
 359                 playback_mods : capture_mods;
 360         int i;
 361
 362         /*
 363          * This is needed for 24bit data
 364          * We need to shift 8bit
 365          *
 366          * Linux 24bit data is located as 0x00******
 367          * HW    24bit data is located as 0x******00
 368          *
 369          */
 370         if (snd_pcm_format_width(runtime->format) == 16)
 371                 return 0;
 372
 373         for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
 374                 tmod = rsnd_io_to_mod(io, mods[i]);
 375                 if (tmod)
 376                         break;
 377         }
 378
 379         if (tmod != mod)
 380                 return 0;
 381
 382         if (rsnd_io_is_play(io))
 383                 return  (0 << 20) | /* shift to Left */
 384                         (8 << 16);  /* 8bit */
 385         else
 386                 return  (1 << 20) | /* shift to Right */
 387                         (8 << 16);  /* 8bit */
 388 }
 389
 390 /*
 391  *      rsnd_dai functions
 392  */
 393 struct rsnd_mod *rsnd_mod_next(int *iterator,
 394                                struct rsnd_dai_stream *io,
 395                                enum rsnd_mod_type *array,
 396                                int array_size)
 397 {
 398         struct rsnd_mod *mod;
 399         enum rsnd_mod_type type;
 400         int max = array ? array_size : RSND_MOD_MAX;
 401
 402         for (; *iterator < max; (*iterator)++) {
 403                 type = (array) ? array[*iterator] : *iterator;
 404                 mod = rsnd_io_to_mod(io, type);
 405                 if (mod)
 406                         return mod;
 407         }
 408
 409         return NULL;
 410 }
 411
 412 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
 413         {
 414                 /* CAPTURE */
 415                 RSND_MOD_AUDMAPP,
 416                 RSND_MOD_AUDMA,
 417                 RSND_MOD_DVC,
 418                 RSND_MOD_MIX,
 419                 RSND_MOD_CTU,
 420                 RSND_MOD_CMD,
 421                 RSND_MOD_SRC,
 422                 RSND_MOD_SSIU,
 423                 RSND_MOD_SSIM3,
 424                 RSND_MOD_SSIM2,
 425                 RSND_MOD_SSIM1,
 426                 RSND_MOD_SSIP,
 427                 RSND_MOD_SSI,
 428         }, {
 429                 /* PLAYBACK */
 430                 RSND_MOD_AUDMAPP,
 431                 RSND_MOD_AUDMA,
 432                 RSND_MOD_SSIM3,
 433                 RSND_MOD_SSIM2,
 434                 RSND_MOD_SSIM1,
 435                 RSND_MOD_SSIP,
 436                 RSND_MOD_SSI,
 437                 RSND_MOD_SSIU,
 438                 RSND_MOD_DVC,
 439                 RSND_MOD_MIX,
 440                 RSND_MOD_CTU,
 441                 RSND_MOD_CMD,
 442                 RSND_MOD_SRC,
 443         },
 444 };
 445
 446 static int rsnd_status_update(u32 *status,
 447                               int shift, int add, int timing)
 448 {
 449         u32 mask        = 0xF << shift;
 450         u8 val          = (*status >> shift) & 0xF;
 451         u8 next_val     = (val + add) & 0xF;
 452         int func_call   = (val == timing);
 453
 454         if (next_val == 0xF) /* underflow case */
 455                 func_call = 0;
 456         else
 457                 *status = (*status & ~mask) + (next_val << shift);
 458
 459         return func_call;
 460 }
 461
 462 #define rsnd_dai_call(fn, io, param...)                                 \
 463 ({                                                                      \
 464         struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));     \
 465         struct rsnd_mod *mod;                                           \
 466         int is_play = rsnd_io_is_play(io);                              \
 467         int ret = 0, i;                                                 \
 468         enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
 469         for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
 470                 int tmp = 0;                                            \
 471                 u32 *status = mod->get_status(io, mod, types[i]);       \
 472                 int func_call = rsnd_status_update(status,              \
 473                                                 __rsnd_mod_shift_##fn,  \
 474                                                 __rsnd_mod_add_##fn,    \
 475                                                 __rsnd_mod_call_##fn);  \
 476                 rsnd_dbg_dai_call(dev, "%s[%d]\t0x%08x %s\n",           \
 477                         rsnd_mod_name(mod), rsnd_mod_id(mod), *status,  \
 478                         (func_call && (mod)->ops->fn) ? #fn : "");      \
 479                 if (func_call && (mod)->ops->fn)                        \
 480                         tmp = (mod)->ops->fn(mod, io, param);           \
 481                 if (tmp && (tmp != -EPROBE_DEFER))                      \
 482                         dev_err(dev, "%s[%d] : %s error %d\n",          \
 483                                 rsnd_mod_name(mod), rsnd_mod_id(mod),   \
 484                                                      #fn, tmp);         \
 485                 ret |= tmp;                                             \
 486         }                                                               \
 487         ret;                                                            \
 488 })
 489
 490 int rsnd_dai_connect(struct rsnd_mod *mod,
 491                      struct rsnd_dai_stream *io,
 492                      enum rsnd_mod_type type)
 493 {
 494         struct rsnd_priv *priv;
 495         struct device *dev;
 496
 497         if (!mod)
 498                 return -EIO;
 499
 500         if (io->mod[type] == mod)
 501                 return 0;
 502
 503         if (io->mod[type])
 504                 return -EINVAL;
 505
 506         priv = rsnd_mod_to_priv(mod);
 507         dev = rsnd_priv_to_dev(priv);
 508
 509         io->mod[type] = mod;
 510
 511         dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
 512                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 513                 rsnd_io_is_play(io) ? "Playback" : "Capture");
 514
 515         return 0;
 516 }
 517
 518 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 519                                 struct rsnd_dai_stream *io,
 520                                 enum rsnd_mod_type type)
 521 {
 522         io->mod[type] = NULL;
 523 }
 524
 525 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
 526                             int max_channels)
 527 {
 528         if (max_channels > 0)
 529                 rdai->max_channels = max_channels;
 530
 531         return rdai->max_channels;
 532 }
 533
 534 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
 535                             int ssi_lane)
 536 {
 537         if (ssi_lane > 0)
 538                 rdai->ssi_lane = ssi_lane;
 539
 540         return rdai->ssi_lane;
 541 }
 542
 543 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 544 {
 545         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 546                 return NULL;
 547
 548         return priv->rdai + id;
 549 }
 550
 551 static struct snd_soc_dai_driver
 552 *rsnd_daidrv_get(struct rsnd_priv *priv, int id)
 553 {
 554         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 555                 return NULL;
 556
 557         return priv->daidrv + id;
 558 }
 559
 560 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
 561 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 562 {
 563         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 564
 565         return rsnd_rdai_get(priv, dai->id);
 566 }
 567
 568 /*
 569  *      rsnd_soc_dai functions
 570  */
 571 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
 572 {
 573         struct snd_pcm_substream *substream = io->substream;
 574
 575         /*
 576          * this function should be called...
 577          *
 578          * - if rsnd_dai_pointer_update() returns true
 579          * - without spin lock
 580          */
 581
 582         snd_pcm_period_elapsed(substream);
 583 }
 584
 585 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 586                                 struct snd_pcm_substream *substream)
 587 {
 588         io->substream           = substream;
 589 }
 590
 591 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
 592 {
 593         io->substream           = NULL;
 594 }
 595
 596 static
 597 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 598 {
 599         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 600
 601         return  rtd->cpu_dai;
 602 }
 603
 604 static
 605 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 606                                         struct snd_pcm_substream *substream)
 607 {
 608         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 609                 return &rdai->playback;
 610         else
 611                 return &rdai->capture;
 612 }
 613
 614 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 615                             struct snd_soc_dai *dai)
 616 {
 617         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 618         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 619         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 620         int ret;
 621         unsigned long flags;
 622
 623         spin_lock_irqsave(&priv->lock, flags);
 624
 625         switch (cmd) {
 626         case SNDRV_PCM_TRIGGER_START:
 627         case SNDRV_PCM_TRIGGER_RESUME:
 628                 ret = rsnd_dai_call(init, io, priv);
 629                 if (ret < 0)
 630                         goto dai_trigger_end;
 631
 632                 ret = rsnd_dai_call(start, io, priv);
 633                 if (ret < 0)
 634                         goto dai_trigger_end;
 635
 636                 ret = rsnd_dai_call(irq, io, priv, 1);
 637                 if (ret < 0)
 638                         goto dai_trigger_end;
 639
 640                 break;
 641         case SNDRV_PCM_TRIGGER_STOP:
 642         case SNDRV_PCM_TRIGGER_SUSPEND:
 643                 ret = rsnd_dai_call(irq, io, priv, 0);
 644
 645                 ret |= rsnd_dai_call(stop, io, priv);
 646
 647                 ret |= rsnd_dai_call(quit, io, priv);
 648
 649                 break;
 650         default:
 651                 ret = -EINVAL;
 652         }
 653
 654 dai_trigger_end:
 655         spin_unlock_irqrestore(&priv->lock, flags);
 656
 657         return ret;
 658 }
 659
 660 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 661 {
 662         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 663
 664         /* set master/slave audio interface */
 665         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 666         case SND_SOC_DAIFMT_CBM_CFM:
 667                 rdai->clk_master = 0;
 668                 break;
 669         case SND_SOC_DAIFMT_CBS_CFS:
 670                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 671                 break;
 672         default:
 673                 return -EINVAL;
 674         }
 675
 676         /* set format */
 677         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 678         case SND_SOC_DAIFMT_I2S:
 679                 rdai->sys_delay = 0;
 680                 rdai->data_alignment = 0;
 681                 rdai->frm_clk_inv = 0;
 682                 break;
 683         case SND_SOC_DAIFMT_LEFT_J:
 684                 rdai->sys_delay = 1;
 685                 rdai->data_alignment = 0;
 686                 rdai->frm_clk_inv = 1;
 687                 break;
 688         case SND_SOC_DAIFMT_RIGHT_J:
 689                 rdai->sys_delay = 1;
 690                 rdai->data_alignment = 1;
 691                 rdai->frm_clk_inv = 1;
 692                 break;
 693         }
 694
 695         /* set clock inversion */
 696         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 697         case SND_SOC_DAIFMT_NB_IF:
 698                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 699                 break;
 700         case SND_SOC_DAIFMT_IB_NF:
 701                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 702                 break;
 703         case SND_SOC_DAIFMT_IB_IF:
 704                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 705                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 706                 break;
 707         case SND_SOC_DAIFMT_NB_NF:
 708         default:
 709                 break;
 710         }
 711
 712         return 0;
 713 }
 714
 715 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 716                                      u32 tx_mask, u32 rx_mask,
 717                                      int slots, int slot_width)
 718 {
 719         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 720         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 721         struct device *dev = rsnd_priv_to_dev(priv);
 722
 723         switch (slots) {
 724         case 2:
 725         case 6:
 726         case 8:
 727                 /* TDM Extend Mode */
 728                 rsnd_rdai_channels_set(rdai, slots);
 729                 rsnd_rdai_ssi_lane_set(rdai, 1);
 730                 break;
 731         default:
 732                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
 733                 return -EINVAL;
 734         }
 735
 736         return 0;
 737 }
 738
 739 static unsigned int rsnd_soc_hw_channels_list[] = {
 740         2, 6, 8,
 741 };
 742
 743 static unsigned int rsnd_soc_hw_rate_list[] = {
 744           8000,
 745          11025,
 746          16000,
 747          22050,
 748          32000,
 749          44100,
 750          48000,
 751          64000,
 752          88200,
 753          96000,
 754         176400,
 755         192000,
 756 };
 757
 758 static int rsnd_soc_hw_rule(struct rsnd_priv *priv,
 759                             unsigned int *list, int list_num,
 760                             struct snd_interval *baseline, struct snd_interval *iv)
 761 {
 762         struct snd_interval p;
 763         unsigned int rate;
 764         int i;
 765
 766         snd_interval_any(&p);
 767         p.min = UINT_MAX;
 768         p.max = 0;
 769
 770         for (i = 0; i < list_num; i++) {
 771
 772                 if (!snd_interval_test(iv, list[i]))
 773                         continue;
 774
 775                 rate = rsnd_ssi_clk_query(priv,
 776                                           baseline->min, list[i], NULL);
 777                 if (rate > 0) {
 778                         p.min = min(p.min, list[i]);
 779                         p.max = max(p.max, list[i]);
 780                 }
 781
 782                 rate = rsnd_ssi_clk_query(priv,
 783                                           baseline->max, list[i], NULL);
 784                 if (rate > 0) {
 785                         p.min = min(p.min, list[i]);
 786                         p.max = max(p.max, list[i]);
 787                 }
 788         }
 789
 790         return snd_interval_refine(iv, &p);
 791 }
 792
 793 static int __rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
 794                                    struct snd_pcm_hw_rule *rule,
 795                                    int is_play)
 796 {
 797         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 798         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 799         struct snd_interval ic;
 800         struct snd_soc_dai *dai = rule->private;
 801         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 802         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 803         struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture;
 804
 805         /*
 806          * possible sampling rate limitation is same as
 807          * 2ch if it supports multi ssi
 808          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 809          */
 810         ic = *ic_;
 811         ic.min =
 812         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 813
 814         return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list,
 815                                 ARRAY_SIZE(rsnd_soc_hw_rate_list),
 816                                 &ic, ir);
 817 }
 818
 819 static int rsnd_soc_hw_rule_rate_playback(struct snd_pcm_hw_params *params,
 820                                  struct snd_pcm_hw_rule *rule)
 821 {
 822         return __rsnd_soc_hw_rule_rate(params, rule, 1);
 823 }
 824
 825 static int rsnd_soc_hw_rule_rate_capture(struct snd_pcm_hw_params *params,
 826                                           struct snd_pcm_hw_rule *rule)
 827 {
 828         return __rsnd_soc_hw_rule_rate(params, rule, 0);
 829 }
 830
 831 static int __rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
 832                                        struct snd_pcm_hw_rule *rule,
 833                                        int is_play)
 834 {
 835         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 836         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 837         struct snd_interval ic;
 838         struct snd_soc_dai *dai = rule->private;
 839         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 840         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 841         struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture;
 842
 843         /*
 844          * possible sampling rate limitation is same as
 845          * 2ch if it supports multi ssi
 846          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 847          */
 848         ic = *ic_;
 849         ic.min =
 850         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 851
 852         return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list,
 853                                 ARRAY_SIZE(rsnd_soc_hw_channels_list),
 854                                 ir, &ic);
 855 }
 856
 857 static int rsnd_soc_hw_rule_channels_playback(struct snd_pcm_hw_params *params,
 858                                               struct snd_pcm_hw_rule *rule)
 859 {
 860         return __rsnd_soc_hw_rule_channels(params, rule, 1);
 861 }
 862
 863 static int rsnd_soc_hw_rule_channels_capture(struct snd_pcm_hw_params *params,
 864                                              struct snd_pcm_hw_rule *rule)
 865 {
 866         return __rsnd_soc_hw_rule_channels(params, rule, 0);
 867 }
 868
 869 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
 870         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 871                         SNDRV_PCM_INFO_MMAP             |
 872                         SNDRV_PCM_INFO_MMAP_VALID,
 873         .buffer_bytes_max       = 64 * 1024,
 874         .period_bytes_min       = 32,
 875         .period_bytes_max       = 8192,
 876         .periods_min            = 1,
 877         .periods_max            = 32,
 878         .fifo_size              = 256,
 879 };
 880
 881 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
 882                                 struct snd_soc_dai *dai)
 883 {
 884         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 885         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 886         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 887         struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
 888         struct snd_pcm_runtime *runtime = substream->runtime;
 889         unsigned int max_channels = rsnd_rdai_channels_get(rdai);
 890         int ret;
 891         int i;
 892
 893         rsnd_dai_stream_init(io, substream);
 894
 895         /*
 896          * Channel Limitation
 897          * It depends on Platform design
 898          */
 899         constraint->list        = rsnd_soc_hw_channels_list;
 900         constraint->count       = 0;
 901         constraint->mask        = 0;
 902
 903         for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
 904                 if (rsnd_soc_hw_channels_list[i] > max_channels)
 905                         break;
 906                 constraint->count = i + 1;
 907         }
 908
 909         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 910
 911         snd_pcm_hw_constraint_list(runtime, 0,
 912                                    SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
 913
 914         snd_pcm_hw_constraint_integer(runtime,
 915                                       SNDRV_PCM_HW_PARAM_PERIODS);
 916
 917         /*
 918          * Sampling Rate / Channel Limitation
 919          * It depends on Clock Master Mode
 920          */
 921         if (rsnd_rdai_is_clk_master(rdai)) {
 922                 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 923
 924                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 925                                     is_play ? rsnd_soc_hw_rule_rate_playback :
 926                                               rsnd_soc_hw_rule_rate_capture,
 927                                     dai,
 928                                     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 929                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 930                                     is_play ? rsnd_soc_hw_rule_channels_playback :
 931                                               rsnd_soc_hw_rule_channels_capture,
 932                                     dai,
 933                                     SNDRV_PCM_HW_PARAM_RATE, -1);
 934         }
 935
 936         /*
 937          * call rsnd_dai_call without spinlock
 938          */
 939         ret = rsnd_dai_call(nolock_start, io, priv);
 940         if (ret < 0)
 941                 rsnd_dai_call(nolock_stop, io, priv);
 942
 943         return ret;
 944 }
 945
 946 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
 947                                   struct snd_soc_dai *dai)
 948 {
 949         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 950         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 951         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 952
 953         /*
 954          * call rsnd_dai_call without spinlock
 955          */
 956         rsnd_dai_call(nolock_stop, io, priv);
 957
 958         rsnd_dai_stream_quit(io);
 959 }
 960
 961 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
 962                                 struct snd_soc_dai *dai)
 963 {
 964         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 965         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 966         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 967
 968         return rsnd_dai_call(prepare, io, priv);
 969 }
 970
 971 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
 972         .startup        = rsnd_soc_dai_startup,
 973         .shutdown       = rsnd_soc_dai_shutdown,
 974         .trigger        = rsnd_soc_dai_trigger,
 975         .set_fmt        = rsnd_soc_dai_set_fmt,
 976         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
 977         .prepare        = rsnd_soc_dai_prepare,
 978 };
 979
 980 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
 981                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
 982                 struct device_node *node,
 983                 struct device_node *playback,
 984                 struct device_node *capture)
 985 {
 986         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 987         struct device_node *np;
 988         struct rsnd_mod *mod;
 989         int i;
 990
 991         if (!node)
 992                 return;
 993
 994         i = 0;
 995         for_each_child_of_node(node, np) {
 996                 mod = mod_get(priv, i);
 997                 if (np == playback)
 998                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
 999                 if (np == capture)
1000                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
1001                 i++;
1002         }
1003
1004         of_node_put(node);
1005 }
1006
1007 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1008                                             int *is_graph)
1009 {
1010         struct device *dev = rsnd_priv_to_dev(priv);
1011         struct device_node *np = dev->of_node;
1012         struct device_node *dai_node;
1013         struct device_node *ret;
1014
1015         *is_graph = 0;
1016
1017         /*
1018          * parse both previous dai (= rcar_sound,dai), and
1019          * graph dai (= ports/port)
1020          */
1021         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1022         if (dai_node) {
1023                 ret = dai_node;
1024                 goto of_node_compatible;
1025         }
1026
1027         ret = np;
1028
1029         dai_node = of_graph_get_next_endpoint(np, NULL);
1030         if (dai_node)
1031                 goto of_node_graph;
1032
1033         return NULL;
1034
1035 of_node_graph:
1036         *is_graph = 1;
1037 of_node_compatible:
1038         of_node_put(dai_node);
1039
1040         return ret;
1041 }
1042
1043 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1044                              struct device_node *dai_np,
1045                              int dai_i)
1046 {
1047         struct device_node *playback, *capture;
1048         struct rsnd_dai_stream *io_playback;
1049         struct rsnd_dai_stream *io_capture;
1050         struct snd_soc_dai_driver *drv;
1051         struct rsnd_dai *rdai;
1052         struct device *dev = rsnd_priv_to_dev(priv);
1053         int io_i;
1054
1055         rdai            = rsnd_rdai_get(priv, dai_i);
1056         drv             = rsnd_daidrv_get(priv, dai_i);
1057         io_playback     = &rdai->playback;
1058         io_capture      = &rdai->capture;
1059
1060         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1061
1062         rdai->priv      = priv;
1063         drv->name       = rdai->name;
1064         drv->ops        = &rsnd_soc_dai_ops;
1065
1066         snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
1067                  "DAI%d Playback", dai_i);
1068         drv->playback.rates             = RSND_RATES;
1069         drv->playback.formats           = RSND_FMTS;
1070         drv->playback.channels_min      = 2;
1071         drv->playback.channels_max      = 8;
1072         drv->playback.stream_name       = rdai->playback.name;
1073
1074         snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
1075                  "DAI%d Capture", dai_i);
1076         drv->capture.rates              = RSND_RATES;
1077         drv->capture.formats            = RSND_FMTS;
1078         drv->capture.channels_min       = 2;
1079         drv->capture.channels_max       = 8;
1080         drv->capture.stream_name        = rdai->capture.name;
1081
1082         rdai->playback.rdai             = rdai;
1083         rdai->capture.rdai              = rdai;
1084         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1085         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1086
1087         for (io_i = 0;; io_i++) {
1088                 playback = of_parse_phandle(dai_np, "playback", io_i);
1089                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1090
1091                 if (!playback && !capture)
1092                         break;
1093
1094                 rsnd_parse_connect_ssi(rdai, playback, capture);
1095                 rsnd_parse_connect_src(rdai, playback, capture);
1096                 rsnd_parse_connect_ctu(rdai, playback, capture);
1097                 rsnd_parse_connect_mix(rdai, playback, capture);
1098                 rsnd_parse_connect_dvc(rdai, playback, capture);
1099
1100                 of_node_put(playback);
1101                 of_node_put(capture);
1102         }
1103
1104         if (rsnd_ssi_is_pin_sharing(io_capture) ||
1105             rsnd_ssi_is_pin_sharing(io_playback)) {
1106                 /* should have symmetric_rates if pin sharing */
1107                 drv->symmetric_rates = 1;
1108         }
1109
1110         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1111                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1112                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1113 }
1114
1115 static int rsnd_dai_probe(struct rsnd_priv *priv)
1116 {
1117         struct device_node *dai_node;
1118         struct device_node *dai_np;
1119         struct snd_soc_dai_driver *rdrv;
1120         struct device *dev = rsnd_priv_to_dev(priv);
1121         struct rsnd_dai *rdai;
1122         int nr;
1123         int is_graph;
1124         int dai_i;
1125
1126         dai_node = rsnd_dai_of_node(priv, &is_graph);
1127         if (is_graph)
1128                 nr = of_graph_get_endpoint_count(dai_node);
1129         else
1130                 nr = of_get_child_count(dai_node);
1131
1132         if (!nr)
1133                 return -EINVAL;
1134
1135         rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1136         rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1137         if (!rdrv || !rdai)
1138                 return -ENOMEM;
1139
1140         priv->rdai_nr   = nr;
1141         priv->daidrv    = rdrv;
1142         priv->rdai      = rdai;
1143
1144         /*
1145          * parse all dai
1146          */
1147         dai_i = 0;
1148         if (is_graph) {
1149                 for_each_endpoint_of_node(dai_node, dai_np) {
1150                         __rsnd_dai_probe(priv, dai_np, dai_i);
1151                         rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i);
1152                         dai_i++;
1153                 }
1154         } else {
1155                 for_each_child_of_node(dai_node, dai_np)
1156                         __rsnd_dai_probe(priv, dai_np, dai_i++);
1157         }
1158
1159         return 0;
1160 }
1161
1162 /*
1163  *              pcm ops
1164  */
1165 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1166                          struct snd_pcm_hw_params *hw_params)
1167 {
1168         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1169         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1170         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1171         int ret;
1172
1173         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1174         if (ret)
1175                 return ret;
1176
1177         return snd_pcm_lib_malloc_pages(substream,
1178                                         params_buffer_bytes(hw_params));
1179 }
1180
1181 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1182 {
1183         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1184         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1185         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1186         snd_pcm_uframes_t pointer = 0;
1187
1188         rsnd_dai_call(pointer, io, &pointer);
1189
1190         return pointer;
1191 }
1192
1193 static const struct snd_pcm_ops rsnd_pcm_ops = {
1194         .ioctl          = snd_pcm_lib_ioctl,
1195         .hw_params      = rsnd_hw_params,
1196         .hw_free        = snd_pcm_lib_free_pages,
1197         .pointer        = rsnd_pointer,
1198 };
1199
1200 /*
1201  *              snd_kcontrol
1202  */
1203 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1204                            struct snd_ctl_elem_info *uinfo)
1205 {
1206         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1207
1208         if (cfg->texts) {
1209                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1210                 uinfo->count = cfg->size;
1211                 uinfo->value.enumerated.items = cfg->max;
1212                 if (uinfo->value.enumerated.item >= cfg->max)
1213                         uinfo->value.enumerated.item = cfg->max - 1;
1214                 strlcpy(uinfo->value.enumerated.name,
1215                         cfg->texts[uinfo->value.enumerated.item],
1216                         sizeof(uinfo->value.enumerated.name));
1217         } else {
1218                 uinfo->count = cfg->size;
1219                 uinfo->value.integer.min = 0;
1220                 uinfo->value.integer.max = cfg->max;
1221                 uinfo->type = (cfg->max == 1) ?
1222                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1223                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1224         }
1225
1226         return 0;
1227 }
1228
1229 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1230                           struct snd_ctl_elem_value *uc)
1231 {
1232         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1233         int i;
1234
1235         for (i = 0; i < cfg->size; i++)
1236                 if (cfg->texts)
1237                         uc->value.enumerated.item[i] = cfg->val[i];
1238                 else
1239                         uc->value.integer.value[i] = cfg->val[i];
1240
1241         return 0;
1242 }
1243
1244 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1245                           struct snd_ctl_elem_value *uc)
1246 {
1247         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1248         int i, change = 0;
1249
1250         if (!cfg->accept(cfg->io))
1251                 return 0;
1252
1253         for (i = 0; i < cfg->size; i++) {
1254                 if (cfg->texts) {
1255                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1256                         cfg->val[i] = uc->value.enumerated.item[i];
1257                 } else {
1258                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1259                         cfg->val[i] = uc->value.integer.value[i];
1260                 }
1261         }
1262
1263         if (change && cfg->update)
1264                 cfg->update(cfg->io, cfg->mod);
1265
1266         return change;
1267 }
1268
1269 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1270 {
1271         return 1;
1272 }
1273
1274 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1275 {
1276         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1277
1278         return !!runtime;
1279 }
1280
1281 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1282 {
1283         cfg->cfg.val = cfg->val;
1284
1285         return &cfg->cfg;
1286 }
1287
1288 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1289 {
1290         cfg->cfg.val = &cfg->val;
1291
1292         return &cfg->cfg;
1293 }
1294
1295 const char * const volume_ramp_rate[] = {
1296         "128 dB/1 step",         /* 00000 */
1297         "64 dB/1 step",          /* 00001 */
1298         "32 dB/1 step",          /* 00010 */
1299         "16 dB/1 step",          /* 00011 */
1300         "8 dB/1 step",           /* 00100 */
1301         "4 dB/1 step",           /* 00101 */
1302         "2 dB/1 step",           /* 00110 */
1303         "1 dB/1 step",           /* 00111 */
1304         "0.5 dB/1 step",         /* 01000 */
1305         "0.25 dB/1 step",        /* 01001 */
1306         "0.125 dB/1 step",       /* 01010 = VOLUME_RAMP_MAX_MIX */
1307         "0.125 dB/2 steps",      /* 01011 */
1308         "0.125 dB/4 steps",      /* 01100 */
1309         "0.125 dB/8 steps",      /* 01101 */
1310         "0.125 dB/16 steps",     /* 01110 */
1311         "0.125 dB/32 steps",     /* 01111 */
1312         "0.125 dB/64 steps",     /* 10000 */
1313         "0.125 dB/128 steps",    /* 10001 */
1314         "0.125 dB/256 steps",    /* 10010 */
1315         "0.125 dB/512 steps",    /* 10011 */
1316         "0.125 dB/1024 steps",   /* 10100 */
1317         "0.125 dB/2048 steps",   /* 10101 */
1318         "0.125 dB/4096 steps",   /* 10110 */
1319         "0.125 dB/8192 steps",   /* 10111 = VOLUME_RAMP_MAX_DVC */
1320 };
1321
1322 int rsnd_kctrl_new(struct rsnd_mod *mod,
1323                    struct rsnd_dai_stream *io,
1324                    struct snd_soc_pcm_runtime *rtd,
1325                    const unsigned char *name,
1326                    int (*accept)(struct rsnd_dai_stream *io),
1327                    void (*update)(struct rsnd_dai_stream *io,
1328                                   struct rsnd_mod *mod),
1329                    struct rsnd_kctrl_cfg *cfg,
1330                    const char * const *texts,
1331                    int size,
1332                    u32 max)
1333 {
1334         struct snd_card *card = rtd->card->snd_card;
1335         struct snd_kcontrol *kctrl;
1336         struct snd_kcontrol_new knew = {
1337                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1338                 .name           = name,
1339                 .info           = rsnd_kctrl_info,
1340                 .index          = rtd->num,
1341                 .get            = rsnd_kctrl_get,
1342                 .put            = rsnd_kctrl_put,
1343         };
1344         int ret;
1345
1346         if (size > RSND_MAX_CHANNELS)
1347                 return -EINVAL;
1348
1349         kctrl = snd_ctl_new1(&knew, cfg);
1350         if (!kctrl)
1351                 return -ENOMEM;
1352
1353         ret = snd_ctl_add(card, kctrl);
1354         if (ret < 0)
1355                 return ret;
1356
1357         cfg->texts      = texts;
1358         cfg->max        = max;
1359         cfg->size       = size;
1360         cfg->accept     = accept;
1361         cfg->update     = update;
1362         cfg->card       = card;
1363         cfg->kctrl      = kctrl;
1364         cfg->io         = io;
1365         cfg->mod        = mod;
1366
1367         return 0;
1368 }
1369
1370 /*
1371  *              snd_soc_component
1372  */
1373
1374 #define PREALLOC_BUFFER         (32 * 1024)
1375 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1376
1377 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1378                                   struct rsnd_dai_stream *io,
1379                                   int stream)
1380 {
1381         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1382         struct device *dev = rsnd_priv_to_dev(priv);
1383         struct snd_pcm_substream *substream;
1384         int err;
1385
1386         /*
1387          * use Audio-DMAC dev if we can use IPMMU
1388          * see
1389          *      rsnd_dmaen_attach()
1390          */
1391         if (io->dmac_dev)
1392                 dev = io->dmac_dev;
1393
1394         for (substream = rtd->pcm->streams[stream].substream;
1395              substream;
1396              substream = substream->next) {
1397                 err = snd_pcm_lib_preallocate_pages(substream,
1398                                         SNDRV_DMA_TYPE_DEV,
1399                                         dev,
1400                                         PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1401                 if (err < 0)
1402                         return err;
1403         }
1404
1405         return 0;
1406 }
1407
1408 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1409 {
1410         struct snd_soc_dai *dai = rtd->cpu_dai;
1411         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1412         int ret;
1413
1414         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1415         if (ret)
1416                 return ret;
1417
1418         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1419         if (ret)
1420                 return ret;
1421
1422         ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1423                                      SNDRV_PCM_STREAM_PLAYBACK);
1424         if (ret)
1425                 return ret;
1426
1427         ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1428                                      SNDRV_PCM_STREAM_CAPTURE);
1429         if (ret)
1430                 return ret;
1431
1432         return 0;
1433 }
1434
1435 static const struct snd_soc_component_driver rsnd_soc_component = {
1436         .ops            = &rsnd_pcm_ops,
1437         .pcm_new        = rsnd_pcm_new,
1438         .name           = "rsnd",
1439 };
1440
1441 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1442                                        struct rsnd_dai_stream *io)
1443 {
1444         int ret;
1445
1446         ret = rsnd_dai_call(probe, io, priv);
1447         if (ret == -EAGAIN) {
1448                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1449                 struct rsnd_mod *mod;
1450                 int i;
1451
1452                 /*
1453                  * Fallback to PIO mode
1454                  */
1455
1456                 /*
1457                  * call "remove" for SSI/SRC/DVC
1458                  * SSI will be switch to PIO mode if it was DMA mode
1459                  * see
1460                  *      rsnd_dma_init()
1461                  *      rsnd_ssi_fallback()
1462                  */
1463                 rsnd_dai_call(remove, io, priv);
1464
1465                 /*
1466                  * remove all mod from io
1467                  * and, re connect ssi
1468                  */
1469                 for_each_rsnd_mod(i, mod, io)
1470                         rsnd_dai_disconnect(mod, io, i);
1471                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1472
1473                 /*
1474                  * fallback
1475                  */
1476                 rsnd_dai_call(fallback, io, priv);
1477
1478                 /*
1479                  * retry to "probe".
1480                  * DAI has SSI which is PIO mode only now.
1481                  */
1482                 ret = rsnd_dai_call(probe, io, priv);
1483         }
1484
1485         return ret;
1486 }
1487
1488 /*
1489  *      rsnd probe
1490  */
1491 static int rsnd_probe(struct platform_device *pdev)
1492 {
1493         struct rsnd_priv *priv;
1494         struct device *dev = &pdev->dev;
1495         struct rsnd_dai *rdai;
1496         int (*probe_func[])(struct rsnd_priv *priv) = {
1497                 rsnd_gen_probe,
1498                 rsnd_dma_probe,
1499                 rsnd_ssi_probe,
1500                 rsnd_ssiu_probe,
1501                 rsnd_src_probe,
1502                 rsnd_ctu_probe,
1503                 rsnd_mix_probe,
1504                 rsnd_dvc_probe,
1505                 rsnd_cmd_probe,
1506                 rsnd_adg_probe,
1507                 rsnd_dai_probe,
1508         };
1509         int ret, i;
1510
1511         /*
1512          *      init priv data
1513          */
1514         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1515         if (!priv)
1516                 return -ENODEV;
1517
1518         priv->pdev      = pdev;
1519         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1520         spin_lock_init(&priv->lock);
1521
1522         /*
1523          *      init each module
1524          */
1525         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1526                 ret = probe_func[i](priv);
1527                 if (ret)
1528                         return ret;
1529         }
1530
1531         for_each_rsnd_dai(rdai, priv, i) {
1532                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1533                 if (ret)
1534                         goto exit_snd_probe;
1535
1536                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1537                 if (ret)
1538                         goto exit_snd_probe;
1539         }
1540
1541         dev_set_drvdata(dev, priv);
1542
1543         /*
1544          *      asoc register
1545          */
1546         ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1547                                          priv->daidrv, rsnd_rdai_nr(priv));
1548         if (ret < 0) {
1549                 dev_err(dev, "cannot snd dai register\n");
1550                 goto exit_snd_probe;
1551         }
1552
1553         pm_runtime_enable(dev);
1554
1555         dev_info(dev, "probed\n");
1556         return ret;
1557
1558 exit_snd_probe:
1559         for_each_rsnd_dai(rdai, priv, i) {
1560                 rsnd_dai_call(remove, &rdai->playback, priv);
1561                 rsnd_dai_call(remove, &rdai->capture, priv);
1562         }
1563
1564         /*
1565          * adg is very special mod which can't use rsnd_dai_call(remove),
1566          * and it registers ADG clock on probe.
1567          * It should be unregister if probe failed.
1568          * Mainly it is assuming -EPROBE_DEFER case
1569          */
1570         rsnd_adg_remove(priv);
1571
1572         return ret;
1573 }
1574
1575 static int rsnd_remove(struct platform_device *pdev)
1576 {
1577         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1578         struct rsnd_dai *rdai;
1579         void (*remove_func[])(struct rsnd_priv *priv) = {
1580                 rsnd_ssi_remove,
1581                 rsnd_ssiu_remove,
1582                 rsnd_src_remove,
1583                 rsnd_ctu_remove,
1584                 rsnd_mix_remove,
1585                 rsnd_dvc_remove,
1586                 rsnd_cmd_remove,
1587                 rsnd_adg_remove,
1588         };
1589         int ret = 0, i;
1590
1591         snd_soc_disconnect_sync(&pdev->dev);
1592
1593         pm_runtime_disable(&pdev->dev);
1594
1595         for_each_rsnd_dai(rdai, priv, i) {
1596                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1597                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1598         }
1599
1600         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1601                 remove_func[i](priv);
1602
1603         return ret;
1604 }
1605
1606 static int __maybe_unused rsnd_suspend(struct device *dev)
1607 {
1608         struct rsnd_priv *priv = dev_get_drvdata(dev);
1609
1610         rsnd_adg_clk_disable(priv);
1611
1612         return 0;
1613 }
1614
1615 static int __maybe_unused rsnd_resume(struct device *dev)
1616 {
1617         struct rsnd_priv *priv = dev_get_drvdata(dev);
1618
1619         rsnd_adg_clk_enable(priv);
1620
1621         return 0;
1622 }
1623
1624 static const struct dev_pm_ops rsnd_pm_ops = {
1625         SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1626 };
1627
1628 static struct platform_driver rsnd_driver = {
1629         .driver = {
1630                 .name   = "rcar_sound",
1631                 .pm     = &rsnd_pm_ops,
1632                 .of_match_table = rsnd_of_match,
1633         },
1634         .probe          = rsnd_probe,
1635         .remove         = rsnd_remove,
1636 };
1637 module_platform_driver(rsnd_driver);
1638
1639 MODULE_LICENSE("GPL v2");
1640 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1641 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1642 MODULE_ALIAS("platform:rcar-pcm-audio");