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_192000
 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 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
 114 {
 115         if (mod->type != type) {
 116                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 117                 struct device *dev = rsnd_priv_to_dev(priv);
 118
 119                 dev_warn(dev, "%s[%d] is not your expected module\n",
 120                          rsnd_mod_name(mod), rsnd_mod_id(mod));
 121         }
 122 }
 123
 124 char *rsnd_mod_name(struct rsnd_mod *mod)
 125 {
 126         if (!mod || !mod->ops)
 127                 return "unknown";
 128
 129         return mod->ops->name;
 130 }
 131
 132 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
 133                                   struct rsnd_mod *mod)
 134 {
 135         if (!mod || !mod->ops || !mod->ops->dma_req)
 136                 return NULL;
 137
 138         return mod->ops->dma_req(io, mod);
 139 }
 140
 141 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
 142                          struct rsnd_mod *mod,
 143                          enum rsnd_mod_type type)
 144 {
 145         return &mod->status;
 146 }
 147
 148 int rsnd_mod_init(struct rsnd_priv *priv,
 149                   struct rsnd_mod *mod,
 150                   struct rsnd_mod_ops *ops,
 151                   struct clk *clk,
 152                   u32* (*get_status)(struct rsnd_dai_stream *io,
 153                                      struct rsnd_mod *mod,
 154                                      enum rsnd_mod_type type),
 155                   enum rsnd_mod_type type,
 156                   int id)
 157 {
 158         int ret = clk_prepare(clk);
 159
 160         if (ret)
 161                 return ret;
 162
 163         mod->id         = id;
 164         mod->ops        = ops;
 165         mod->type       = type;
 166         mod->clk        = clk;
 167         mod->priv       = priv;
 168         mod->get_status = get_status;
 169
 170         return ret;
 171 }
 172
 173 void rsnd_mod_quit(struct rsnd_mod *mod)
 174 {
 175         if (mod->clk)
 176                 clk_unprepare(mod->clk);
 177         mod->clk = NULL;
 178 }
 179
 180 void rsnd_mod_interrupt(struct rsnd_mod *mod,
 181                         void (*callback)(struct rsnd_mod *mod,
 182                                          struct rsnd_dai_stream *io))
 183 {
 184         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 185         struct rsnd_dai_stream *io;
 186         struct rsnd_dai *rdai;
 187         int i;
 188
 189         for_each_rsnd_dai(rdai, priv, i) {
 190                 io = &rdai->playback;
 191                 if (mod == io->mod[mod->type])
 192                         callback(mod, io);
 193
 194                 io = &rdai->capture;
 195                 if (mod == io->mod[mod->type])
 196                         callback(mod, io);
 197         }
 198 }
 199
 200 int rsnd_io_is_working(struct rsnd_dai_stream *io)
 201 {
 202         /* see rsnd_dai_stream_init/quit() */
 203         return !!io->substream;
 204 }
 205
 206 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
 207 {
 208         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 209
 210         return runtime->channels;
 211 }
 212
 213 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
 214 {
 215         int chan = rsnd_runtime_channel_original(io);
 216         struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
 217
 218         if (ctu_mod) {
 219                 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
 220
 221                 if (converted_chan)
 222                         return converted_chan;
 223         }
 224
 225         return chan;
 226 }
 227
 228 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
 229 {
 230         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 231         int chan = rsnd_io_is_play(io) ?
 232                 rsnd_runtime_channel_after_ctu(io) :
 233                 rsnd_runtime_channel_original(io);
 234
 235         /* Use Multi SSI */
 236         if (rsnd_runtime_is_ssi_multi(io))
 237                 chan /= rsnd_rdai_ssi_lane_get(rdai);
 238
 239         /* TDM Extend Mode needs 8ch */
 240         if (chan == 6)
 241                 chan = 8;
 242
 243         return chan;
 244 }
 245
 246 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
 247 {
 248         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 249         int lane = rsnd_rdai_ssi_lane_get(rdai);
 250         int chan = rsnd_io_is_play(io) ?
 251                 rsnd_runtime_channel_after_ctu(io) :
 252                 rsnd_runtime_channel_original(io);
 253
 254         return (chan > 2) && (lane > 1);
 255 }
 256
 257 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
 258 {
 259         return rsnd_runtime_channel_for_ssi(io) >= 6;
 260 }
 261
 262 /*
 263  *      ADINR function
 264  */
 265 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 266 {
 267         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 268         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 269         struct device *dev = rsnd_priv_to_dev(priv);
 270
 271         switch (runtime->sample_bits) {
 272         case 16:
 273                 return 8 << 16;
 274         case 32:
 275                 return 0 << 16;
 276         }
 277
 278         dev_warn(dev, "not supported sample bits\n");
 279
 280         return 0;
 281 }
 282
 283 /*
 284  *      DALIGN function
 285  */
 286 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 287 {
 288         struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
 289         struct rsnd_mod *target;
 290         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 291         u32 val = 0x76543210;
 292         u32 mask = ~0;
 293
 294         /*
 295          * *Hardware* L/R and *Software* L/R are inverted.
 296          * We need to care about inversion timing to control
 297          * Playback/Capture correctly.
 298          * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
 299          *
 300          * sL/R : software L/R
 301          * hL/R : hardware L/R
 302          * (*)  : conversion timing
 303          *
 304          * Playback
 305          *           sL/R (*) hL/R     hL/R     hL/R      hL/R     hL/R
 306          *      [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
 307          *
 308          * Capture
 309          *           hL/R     hL/R      hL/R     hL/R     hL/R (*) sL/R
 310          *      codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
 311          */
 312         if (rsnd_io_is_play(io)) {
 313                 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 314
 315                 target = src ? src : ssiu;
 316         } else {
 317                 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
 318
 319                 target = cmd ? cmd : ssiu;
 320         }
 321
 322         mask <<= runtime->channels * 4;
 323         val = val & mask;
 324
 325         switch (runtime->sample_bits) {
 326         case 16:
 327                 val |= 0x67452301 & ~mask;
 328                 break;
 329         case 32:
 330                 val |= 0x76543210 & ~mask;
 331                 break;
 332         }
 333
 334         /*
 335          * exchange channeles on SRC if possible,
 336          * otherwise, R/L volume settings on DVC
 337          * changes inverted channels
 338          */
 339         if (mod == target)
 340                 return val;
 341         else
 342                 return 0x76543210;
 343 }
 344
 345 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
 346 {
 347         enum rsnd_mod_type playback_mods[] = {
 348                 RSND_MOD_SRC,
 349                 RSND_MOD_CMD,
 350                 RSND_MOD_SSIU,
 351         };
 352         enum rsnd_mod_type capture_mods[] = {
 353                 RSND_MOD_CMD,
 354                 RSND_MOD_SRC,
 355                 RSND_MOD_SSIU,
 356         };
 357         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 358         struct rsnd_mod *tmod = NULL;
 359         enum rsnd_mod_type *mods =
 360                 rsnd_io_is_play(io) ?
 361                 playback_mods : capture_mods;
 362         int i;
 363
 364         /*
 365          * This is needed for 24bit data
 366          * We need to shift 8bit
 367          *
 368          * Linux 24bit data is located as 0x00******
 369          * HW    24bit data is located as 0x******00
 370          *
 371          */
 372         switch (runtime->sample_bits) {
 373         case 16:
 374                 return 0;
 375         case 32:
 376                 break;
 377         }
 378
 379         for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
 380                 tmod = rsnd_io_to_mod(io, mods[i]);
 381                 if (tmod)
 382                         break;
 383         }
 384
 385         if (tmod != mod)
 386                 return 0;
 387
 388         if (rsnd_io_is_play(io))
 389                 return  (0 << 20) | /* shift to Left */
 390                         (8 << 16);  /* 8bit */
 391         else
 392                 return  (1 << 20) | /* shift to Right */
 393                         (8 << 16);  /* 8bit */
 394 }
 395
 396 /*
 397  *      rsnd_dai functions
 398  */
 399 struct rsnd_mod *rsnd_mod_next(int *iterator,
 400                                struct rsnd_dai_stream *io,
 401                                enum rsnd_mod_type *array,
 402                                int array_size)
 403 {
 404         struct rsnd_mod *mod;
 405         enum rsnd_mod_type type;
 406         int max = array ? array_size : RSND_MOD_MAX;
 407
 408         for (; *iterator < max; (*iterator)++) {
 409                 type = (array) ? array[*iterator] : *iterator;
 410                 mod = io->mod[type];
 411                 if (!mod)
 412                         continue;
 413
 414                 return mod;
 415         }
 416
 417         return NULL;
 418 }
 419
 420 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
 421         {
 422                 /* CAPTURE */
 423                 RSND_MOD_AUDMAPP,
 424                 RSND_MOD_AUDMA,
 425                 RSND_MOD_DVC,
 426                 RSND_MOD_MIX,
 427                 RSND_MOD_CTU,
 428                 RSND_MOD_CMD,
 429                 RSND_MOD_SRC,
 430                 RSND_MOD_SSIU,
 431                 RSND_MOD_SSIM3,
 432                 RSND_MOD_SSIM2,
 433                 RSND_MOD_SSIM1,
 434                 RSND_MOD_SSIP,
 435                 RSND_MOD_SSI,
 436         }, {
 437                 /* PLAYBACK */
 438                 RSND_MOD_AUDMAPP,
 439                 RSND_MOD_AUDMA,
 440                 RSND_MOD_SSIM3,
 441                 RSND_MOD_SSIM2,
 442                 RSND_MOD_SSIM1,
 443                 RSND_MOD_SSIP,
 444                 RSND_MOD_SSI,
 445                 RSND_MOD_SSIU,
 446                 RSND_MOD_DVC,
 447                 RSND_MOD_MIX,
 448                 RSND_MOD_CTU,
 449                 RSND_MOD_CMD,
 450                 RSND_MOD_SRC,
 451         },
 452 };
 453
 454 static int rsnd_status_update(u32 *status,
 455                               int shift, int add, int timing)
 456 {
 457         u32 mask        = 0xF << shift;
 458         u8 val          = (*status >> shift) & 0xF;
 459         u8 next_val     = (val + add) & 0xF;
 460         int func_call   = (val == timing);
 461
 462         if (next_val == 0xF) /* underflow case */
 463                 func_call = 0;
 464         else
 465                 *status = (*status & ~mask) + (next_val << shift);
 466
 467         return func_call;
 468 }
 469
 470 #define rsnd_dai_call(fn, io, param...)                                 \
 471 ({                                                                      \
 472         struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));     \
 473         struct rsnd_mod *mod;                                           \
 474         int is_play = rsnd_io_is_play(io);                              \
 475         int ret = 0, i;                                                 \
 476         enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
 477         for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
 478                 int tmp = 0;                                            \
 479                 u32 *status = mod->get_status(io, mod, types[i]);       \
 480                 int func_call = rsnd_status_update(status,              \
 481                                                 __rsnd_mod_shift_##fn,  \
 482                                                 __rsnd_mod_add_##fn,    \
 483                                                 __rsnd_mod_call_##fn);  \
 484                 dev_dbg(dev, "%s[%d]\t0x%08x %s\n",                     \
 485                         rsnd_mod_name(mod), rsnd_mod_id(mod), *status,  \
 486                         (func_call && (mod)->ops->fn) ? #fn : "");      \
 487                 if (func_call && (mod)->ops->fn)                        \
 488                         tmp = (mod)->ops->fn(mod, io, param);           \
 489                 if (tmp && (tmp != -EPROBE_DEFER))                      \
 490                         dev_err(dev, "%s[%d] : %s error %d\n",          \
 491                                 rsnd_mod_name(mod), rsnd_mod_id(mod),   \
 492                                                      #fn, tmp);         \
 493                 ret |= tmp;                                             \
 494         }                                                               \
 495         ret;                                                            \
 496 })
 497
 498 int rsnd_dai_connect(struct rsnd_mod *mod,
 499                      struct rsnd_dai_stream *io,
 500                      enum rsnd_mod_type type)
 501 {
 502         struct rsnd_priv *priv;
 503         struct device *dev;
 504
 505         if (!mod)
 506                 return -EIO;
 507
 508         if (io->mod[type] == mod)
 509                 return 0;
 510
 511         if (io->mod[type])
 512                 return -EINVAL;
 513
 514         priv = rsnd_mod_to_priv(mod);
 515         dev = rsnd_priv_to_dev(priv);
 516
 517         io->mod[type] = mod;
 518
 519         dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
 520                 rsnd_mod_name(mod), rsnd_mod_id(mod),
 521                 rsnd_io_is_play(io) ? "Playback" : "Capture");
 522
 523         return 0;
 524 }
 525
 526 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 527                                 struct rsnd_dai_stream *io,
 528                                 enum rsnd_mod_type type)
 529 {
 530         io->mod[type] = NULL;
 531 }
 532
 533 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
 534                             int max_channels)
 535 {
 536         if (max_channels > 0)
 537                 rdai->max_channels = max_channels;
 538
 539         return rdai->max_channels;
 540 }
 541
 542 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
 543                             int ssi_lane)
 544 {
 545         if (ssi_lane > 0)
 546                 rdai->ssi_lane = ssi_lane;
 547
 548         return rdai->ssi_lane;
 549 }
 550
 551 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 552 {
 553         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 554                 return NULL;
 555
 556         return priv->rdai + id;
 557 }
 558
 559 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
 560 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 561 {
 562         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 563
 564         return rsnd_rdai_get(priv, dai->id);
 565 }
 566
 567 /*
 568  *      rsnd_soc_dai functions
 569  */
 570 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
 571 {
 572         struct snd_pcm_substream *substream = io->substream;
 573
 574         /*
 575          * this function should be called...
 576          *
 577          * - if rsnd_dai_pointer_update() returns true
 578          * - without spin lock
 579          */
 580
 581         snd_pcm_period_elapsed(substream);
 582 }
 583
 584 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 585                                 struct snd_pcm_substream *substream)
 586 {
 587         io->substream           = substream;
 588 }
 589
 590 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
 591 {
 592         io->substream           = NULL;
 593 }
 594
 595 static
 596 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 597 {
 598         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 599
 600         return  rtd->cpu_dai;
 601 }
 602
 603 static
 604 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 605                                         struct snd_pcm_substream *substream)
 606 {
 607         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 608                 return &rdai->playback;
 609         else
 610                 return &rdai->capture;
 611 }
 612
 613 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 614                             struct snd_soc_dai *dai)
 615 {
 616         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 617         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 618         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 619         int ret;
 620         unsigned long flags;
 621
 622         spin_lock_irqsave(&priv->lock, flags);
 623
 624         switch (cmd) {
 625         case SNDRV_PCM_TRIGGER_START:
 626         case SNDRV_PCM_TRIGGER_RESUME:
 627                 rsnd_dai_stream_init(io, substream);
 628
 629                 ret = rsnd_dai_call(init, io, priv);
 630                 if (ret < 0)
 631                         goto dai_trigger_end;
 632
 633                 ret = rsnd_dai_call(start, io, priv);
 634                 if (ret < 0)
 635                         goto dai_trigger_end;
 636
 637                 ret = rsnd_dai_call(irq, io, priv, 1);
 638                 if (ret < 0)
 639                         goto dai_trigger_end;
 640
 641                 break;
 642         case SNDRV_PCM_TRIGGER_STOP:
 643         case SNDRV_PCM_TRIGGER_SUSPEND:
 644                 ret = rsnd_dai_call(irq, io, priv, 0);
 645
 646                 ret |= rsnd_dai_call(stop, io, priv);
 647
 648                 ret |= rsnd_dai_call(quit, io, priv);
 649
 650                 rsnd_dai_stream_quit(io);
 651                 break;
 652         default:
 653                 ret = -EINVAL;
 654         }
 655
 656 dai_trigger_end:
 657         spin_unlock_irqrestore(&priv->lock, flags);
 658
 659         return ret;
 660 }
 661
 662 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 663 {
 664         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 665
 666         /* set master/slave audio interface */
 667         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 668         case SND_SOC_DAIFMT_CBM_CFM:
 669                 rdai->clk_master = 0;
 670                 break;
 671         case SND_SOC_DAIFMT_CBS_CFS:
 672                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 673                 break;
 674         default:
 675                 return -EINVAL;
 676         }
 677
 678         /* set format */
 679         rdai->bit_clk_inv = 0;
 680         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 681         case SND_SOC_DAIFMT_I2S:
 682                 rdai->sys_delay = 0;
 683                 rdai->data_alignment = 0;
 684                 rdai->frm_clk_inv = 0;
 685                 break;
 686         case SND_SOC_DAIFMT_LEFT_J:
 687                 rdai->sys_delay = 1;
 688                 rdai->data_alignment = 0;
 689                 rdai->frm_clk_inv = 1;
 690                 break;
 691         case SND_SOC_DAIFMT_RIGHT_J:
 692                 rdai->sys_delay = 1;
 693                 rdai->data_alignment = 1;
 694                 rdai->frm_clk_inv = 1;
 695                 break;
 696         }
 697
 698         /* set clock inversion */
 699         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 700         case SND_SOC_DAIFMT_NB_IF:
 701                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 702                 break;
 703         case SND_SOC_DAIFMT_IB_NF:
 704                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 705                 break;
 706         case SND_SOC_DAIFMT_IB_IF:
 707                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 708                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 709                 break;
 710         case SND_SOC_DAIFMT_NB_NF:
 711         default:
 712                 break;
 713         }
 714
 715         return 0;
 716 }
 717
 718 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 719                                      u32 tx_mask, u32 rx_mask,
 720                                      int slots, int slot_width)
 721 {
 722         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 723         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 724         struct device *dev = rsnd_priv_to_dev(priv);
 725
 726         switch (slots) {
 727         case 2:
 728         case 6:
 729         case 8:
 730                 /* TDM Extend Mode */
 731                 rsnd_rdai_channels_set(rdai, slots);
 732                 rsnd_rdai_ssi_lane_set(rdai, 1);
 733                 break;
 734         default:
 735                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
 736                 return -EINVAL;
 737         }
 738
 739         return 0;
 740 }
 741
 742 static unsigned int rsnd_soc_hw_channels_list[] = {
 743         2, 6, 8,
 744 };
 745
 746 static unsigned int rsnd_soc_hw_rate_list[] = {
 747           8000,
 748          11025,
 749          16000,
 750          22050,
 751          32000,
 752          44100,
 753          48000,
 754          64000,
 755          88200,
 756          96000,
 757         176400,
 758         192000,
 759 };
 760
 761 static int rsnd_soc_hw_rule(struct rsnd_priv *priv,
 762                             unsigned int *list, int list_num,
 763                             struct snd_interval *baseline, struct snd_interval *iv)
 764 {
 765         struct snd_interval p;
 766         unsigned int rate;
 767         int i;
 768
 769         snd_interval_any(&p);
 770         p.min = UINT_MAX;
 771         p.max = 0;
 772
 773         for (i = 0; i < list_num; i++) {
 774
 775                 if (!snd_interval_test(iv, list[i]))
 776                         continue;
 777
 778                 rate = rsnd_ssi_clk_query(priv,
 779                                           baseline->min, list[i], NULL);
 780                 if (rate > 0) {
 781                         p.min = min(p.min, list[i]);
 782                         p.max = max(p.max, list[i]);
 783                 }
 784
 785                 rate = rsnd_ssi_clk_query(priv,
 786                                           baseline->max, list[i], NULL);
 787                 if (rate > 0) {
 788                         p.min = min(p.min, list[i]);
 789                         p.max = max(p.max, list[i]);
 790                 }
 791         }
 792
 793         return snd_interval_refine(iv, &p);
 794 }
 795
 796 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
 797                                  struct snd_pcm_hw_rule *rule)
 798 {
 799         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 800         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 801         struct snd_interval ic;
 802         struct snd_soc_dai *dai = rule->private;
 803         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 804         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 805
 806         /*
 807          * possible sampling rate limitation is same as
 808          * 2ch if it supports multi ssi
 809          */
 810         ic = *ic_;
 811         if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
 812                 ic.min = 2;
 813                 ic.max = 2;
 814         }
 815
 816         return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list,
 817                                 ARRAY_SIZE(rsnd_soc_hw_rate_list),
 818                                 &ic, ir);
 819 }
 820
 821
 822 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
 823                                      struct snd_pcm_hw_rule *rule)
 824 {
 825         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 826         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 827         struct snd_interval ic;
 828         struct snd_soc_dai *dai = rule->private;
 829         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 830         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 831
 832         /*
 833          * possible sampling rate limitation is same as
 834          * 2ch if it supports multi ssi
 835          */
 836         ic = *ic_;
 837         if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
 838                 ic.min = 2;
 839                 ic.max = 2;
 840         }
 841
 842         return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list,
 843                                 ARRAY_SIZE(rsnd_soc_hw_channels_list),
 844                                 ir, &ic);
 845 }
 846
 847 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
 848         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 849                         SNDRV_PCM_INFO_MMAP             |
 850                         SNDRV_PCM_INFO_MMAP_VALID,
 851         .buffer_bytes_max       = 64 * 1024,
 852         .period_bytes_min       = 32,
 853         .period_bytes_max       = 8192,
 854         .periods_min            = 1,
 855         .periods_max            = 32,
 856         .fifo_size              = 256,
 857 };
 858
 859 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
 860                                 struct snd_soc_dai *dai)
 861 {
 862         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 863         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 864         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 865         struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
 866         struct snd_pcm_runtime *runtime = substream->runtime;
 867         unsigned int max_channels = rsnd_rdai_channels_get(rdai);
 868         int ret;
 869         int i;
 870
 871         /*
 872          * Channel Limitation
 873          * It depends on Platform design
 874          */
 875         constraint->list        = rsnd_soc_hw_channels_list;
 876         constraint->count       = 0;
 877         constraint->mask        = 0;
 878
 879         for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
 880                 if (rsnd_soc_hw_channels_list[i] > max_channels)
 881                         break;
 882                 constraint->count = i + 1;
 883         }
 884
 885         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 886
 887         snd_pcm_hw_constraint_list(runtime, 0,
 888                                    SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
 889
 890         snd_pcm_hw_constraint_integer(runtime,
 891                                       SNDRV_PCM_HW_PARAM_PERIODS);
 892
 893         /*
 894          * Sampling Rate / Channel Limitation
 895          * It depends on Clock Master Mode
 896          */
 897         if (rsnd_rdai_is_clk_master(rdai)) {
 898                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 899                                     rsnd_soc_hw_rule_rate, dai,
 900                                     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 901                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 902                                     rsnd_soc_hw_rule_channels, dai,
 903                                     SNDRV_PCM_HW_PARAM_RATE, -1);
 904         }
 905
 906         /*
 907          * call rsnd_dai_call without spinlock
 908          */
 909         ret = rsnd_dai_call(nolock_start, io, priv);
 910         if (ret < 0)
 911                 rsnd_dai_call(nolock_stop, io, priv);
 912
 913         return ret;
 914 }
 915
 916 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
 917                                   struct snd_soc_dai *dai)
 918 {
 919         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 920         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 921         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 922
 923         /*
 924          * call rsnd_dai_call without spinlock
 925          */
 926         rsnd_dai_call(nolock_stop, io, priv);
 927 }
 928
 929 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
 930                                 struct snd_soc_dai *dai)
 931 {
 932         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 933         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 934         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 935
 936         return rsnd_dai_call(prepare, io, priv);
 937 }
 938
 939 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
 940         .startup        = rsnd_soc_dai_startup,
 941         .shutdown       = rsnd_soc_dai_shutdown,
 942         .trigger        = rsnd_soc_dai_trigger,
 943         .set_fmt        = rsnd_soc_dai_set_fmt,
 944         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
 945         .prepare        = rsnd_soc_dai_prepare,
 946 };
 947
 948 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
 949                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
 950                 struct device_node *node,
 951                 struct device_node *playback,
 952                 struct device_node *capture)
 953 {
 954         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 955         struct device_node *np;
 956         struct rsnd_mod *mod;
 957         int i;
 958
 959         if (!node)
 960                 return;
 961
 962         i = 0;
 963         for_each_child_of_node(node, np) {
 964                 mod = mod_get(priv, i);
 965                 if (np == playback)
 966                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
 967                 if (np == capture)
 968                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
 969                 i++;
 970         }
 971
 972         of_node_put(node);
 973 }
 974
 975 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
 976                                             int *is_graph)
 977 {
 978         struct device *dev = rsnd_priv_to_dev(priv);
 979         struct device_node *np = dev->of_node;
 980         struct device_node *dai_node;
 981         struct device_node *ret;
 982
 983         *is_graph = 0;
 984
 985         /*
 986          * parse both previous dai (= rcar_sound,dai), and
 987          * graph dai (= ports/port)
 988          */
 989         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
 990         if (dai_node) {
 991                 ret = dai_node;
 992                 goto of_node_compatible;
 993         }
 994
 995         ret = np;
 996
 997         dai_node = of_graph_get_next_endpoint(np, NULL);
 998         if (dai_node)
 999                 goto of_node_graph;
1000
1001         return NULL;
1002
1003 of_node_graph:
1004         *is_graph = 1;
1005 of_node_compatible:
1006         of_node_put(dai_node);
1007
1008         return ret;
1009 }
1010
1011 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1012                              struct device_node *dai_np,
1013                              int dai_i, int is_graph)
1014 {
1015         struct device_node *playback, *capture;
1016         struct rsnd_dai_stream *io_playback;
1017         struct rsnd_dai_stream *io_capture;
1018         struct snd_soc_dai_driver *drv;
1019         struct rsnd_dai *rdai;
1020         struct device *dev = rsnd_priv_to_dev(priv);
1021         int io_i;
1022
1023         rdai            = rsnd_rdai_get(priv, dai_i);
1024         drv             = priv->daidrv + dai_i;
1025         io_playback     = &rdai->playback;
1026         io_capture      = &rdai->capture;
1027
1028         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1029
1030         rdai->priv      = priv;
1031         drv->name       = rdai->name;
1032         drv->ops        = &rsnd_soc_dai_ops;
1033
1034         snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
1035                  "DAI%d Playback", dai_i);
1036         drv->playback.rates             = RSND_RATES;
1037         drv->playback.formats           = RSND_FMTS;
1038         drv->playback.channels_min      = 2;
1039         drv->playback.channels_max      = 8;
1040         drv->playback.stream_name       = rdai->playback.name;
1041
1042         snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
1043                  "DAI%d Capture", dai_i);
1044         drv->capture.rates              = RSND_RATES;
1045         drv->capture.formats            = RSND_FMTS;
1046         drv->capture.channels_min       = 2;
1047         drv->capture.channels_max       = 8;
1048         drv->capture.stream_name        = rdai->capture.name;
1049
1050         rdai->playback.rdai             = rdai;
1051         rdai->capture.rdai              = rdai;
1052         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1053         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1054
1055         for (io_i = 0;; io_i++) {
1056                 playback = of_parse_phandle(dai_np, "playback", io_i);
1057                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1058
1059                 if (!playback && !capture)
1060                         break;
1061
1062                 rsnd_parse_connect_ssi(rdai, playback, capture);
1063                 rsnd_parse_connect_src(rdai, playback, capture);
1064                 rsnd_parse_connect_ctu(rdai, playback, capture);
1065                 rsnd_parse_connect_mix(rdai, playback, capture);
1066                 rsnd_parse_connect_dvc(rdai, playback, capture);
1067
1068                 of_node_put(playback);
1069                 of_node_put(capture);
1070         }
1071
1072         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1073                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1074                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1075 }
1076
1077 static int rsnd_dai_probe(struct rsnd_priv *priv)
1078 {
1079         struct device_node *dai_node;
1080         struct device_node *dai_np;
1081         struct snd_soc_dai_driver *rdrv;
1082         struct device *dev = rsnd_priv_to_dev(priv);
1083         struct rsnd_dai *rdai;
1084         int nr;
1085         int is_graph;
1086         int dai_i;
1087
1088         dai_node = rsnd_dai_of_node(priv, &is_graph);
1089         if (is_graph)
1090                 nr = of_graph_get_endpoint_count(dai_node);
1091         else
1092                 nr = of_get_child_count(dai_node);
1093
1094         if (!nr)
1095                 return -EINVAL;
1096
1097         rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
1098         rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
1099         if (!rdrv || !rdai)
1100                 return -ENOMEM;
1101
1102         priv->rdai_nr   = nr;
1103         priv->daidrv    = rdrv;
1104         priv->rdai      = rdai;
1105
1106         /*
1107          * parse all dai
1108          */
1109         dai_i = 0;
1110         if (is_graph) {
1111                 for_each_endpoint_of_node(dai_node, dai_np) {
1112                         __rsnd_dai_probe(priv, dai_np, dai_i, is_graph);
1113                         rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i);
1114                         dai_i++;
1115                 }
1116         } else {
1117                 for_each_child_of_node(dai_node, dai_np)
1118                         __rsnd_dai_probe(priv, dai_np, dai_i++, is_graph);
1119         }
1120
1121         return 0;
1122 }
1123
1124 /*
1125  *              pcm ops
1126  */
1127 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1128                          struct snd_pcm_hw_params *hw_params)
1129 {
1130         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1131         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1132         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1133         int ret;
1134
1135         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1136         if (ret)
1137                 return ret;
1138
1139         return snd_pcm_lib_malloc_pages(substream,
1140                                         params_buffer_bytes(hw_params));
1141 }
1142
1143 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1144 {
1145         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1146         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1147         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1148         snd_pcm_uframes_t pointer = 0;
1149
1150         rsnd_dai_call(pointer, io, &pointer);
1151
1152         return pointer;
1153 }
1154
1155 static const struct snd_pcm_ops rsnd_pcm_ops = {
1156         .ioctl          = snd_pcm_lib_ioctl,
1157         .hw_params      = rsnd_hw_params,
1158         .hw_free        = snd_pcm_lib_free_pages,
1159         .pointer        = rsnd_pointer,
1160 };
1161
1162 /*
1163  *              snd_kcontrol
1164  */
1165 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1166                            struct snd_ctl_elem_info *uinfo)
1167 {
1168         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1169
1170         if (cfg->texts) {
1171                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1172                 uinfo->count = cfg->size;
1173                 uinfo->value.enumerated.items = cfg->max;
1174                 if (uinfo->value.enumerated.item >= cfg->max)
1175                         uinfo->value.enumerated.item = cfg->max - 1;
1176                 strlcpy(uinfo->value.enumerated.name,
1177                         cfg->texts[uinfo->value.enumerated.item],
1178                         sizeof(uinfo->value.enumerated.name));
1179         } else {
1180                 uinfo->count = cfg->size;
1181                 uinfo->value.integer.min = 0;
1182                 uinfo->value.integer.max = cfg->max;
1183                 uinfo->type = (cfg->max == 1) ?
1184                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1185                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1186         }
1187
1188         return 0;
1189 }
1190
1191 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1192                           struct snd_ctl_elem_value *uc)
1193 {
1194         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1195         int i;
1196
1197         for (i = 0; i < cfg->size; i++)
1198                 if (cfg->texts)
1199                         uc->value.enumerated.item[i] = cfg->val[i];
1200                 else
1201                         uc->value.integer.value[i] = cfg->val[i];
1202
1203         return 0;
1204 }
1205
1206 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1207                           struct snd_ctl_elem_value *uc)
1208 {
1209         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1210         int i, change = 0;
1211
1212         if (!cfg->accept(cfg->io))
1213                 return 0;
1214
1215         for (i = 0; i < cfg->size; i++) {
1216                 if (cfg->texts) {
1217                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1218                         cfg->val[i] = uc->value.enumerated.item[i];
1219                 } else {
1220                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1221                         cfg->val[i] = uc->value.integer.value[i];
1222                 }
1223         }
1224
1225         if (change && cfg->update)
1226                 cfg->update(cfg->io, cfg->mod);
1227
1228         return change;
1229 }
1230
1231 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1232 {
1233         return 1;
1234 }
1235
1236 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1237 {
1238         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1239
1240         return !!runtime;
1241 }
1242
1243 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1244 {
1245         cfg->cfg.val = cfg->val;
1246
1247         return &cfg->cfg;
1248 }
1249
1250 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1251 {
1252         cfg->cfg.val = &cfg->val;
1253
1254         return &cfg->cfg;
1255 }
1256
1257 int rsnd_kctrl_new(struct rsnd_mod *mod,
1258                    struct rsnd_dai_stream *io,
1259                    struct snd_soc_pcm_runtime *rtd,
1260                    const unsigned char *name,
1261                    int (*accept)(struct rsnd_dai_stream *io),
1262                    void (*update)(struct rsnd_dai_stream *io,
1263                                   struct rsnd_mod *mod),
1264                    struct rsnd_kctrl_cfg *cfg,
1265                    const char * const *texts,
1266                    int size,
1267                    u32 max)
1268 {
1269         struct snd_card *card = rtd->card->snd_card;
1270         struct snd_kcontrol *kctrl;
1271         struct snd_kcontrol_new knew = {
1272                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1273                 .name           = name,
1274                 .info           = rsnd_kctrl_info,
1275                 .index          = rtd->num,
1276                 .get            = rsnd_kctrl_get,
1277                 .put            = rsnd_kctrl_put,
1278         };
1279         int ret;
1280
1281         /*
1282          * 1) Avoid duplicate register for DVC with MIX case
1283          * 2) Allow duplicate register for MIX
1284          * 3) re-register if card was rebinded
1285          */
1286         list_for_each_entry(kctrl, &card->controls, list) {
1287                 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1288
1289                 if (c == cfg)
1290                         return 0;
1291         }
1292
1293         if (size > RSND_MAX_CHANNELS)
1294                 return -EINVAL;
1295
1296         kctrl = snd_ctl_new1(&knew, cfg);
1297         if (!kctrl)
1298                 return -ENOMEM;
1299
1300         ret = snd_ctl_add(card, kctrl);
1301         if (ret < 0)
1302                 return ret;
1303
1304         cfg->texts      = texts;
1305         cfg->max        = max;
1306         cfg->size       = size;
1307         cfg->accept     = accept;
1308         cfg->update     = update;
1309         cfg->card       = card;
1310         cfg->kctrl      = kctrl;
1311         cfg->io         = io;
1312         cfg->mod        = mod;
1313
1314         return 0;
1315 }
1316
1317 /*
1318  *              snd_soc_platform
1319  */
1320
1321 #define PREALLOC_BUFFER         (32 * 1024)
1322 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1323
1324 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1325 {
1326         struct snd_soc_dai *dai = rtd->cpu_dai;
1327         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1328         int ret;
1329
1330         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1331         if (ret)
1332                 return ret;
1333
1334         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1335         if (ret)
1336                 return ret;
1337
1338         return snd_pcm_lib_preallocate_pages_for_all(
1339                 rtd->pcm,
1340                 SNDRV_DMA_TYPE_CONTINUOUS,
1341                 snd_dma_continuous_data(GFP_KERNEL),
1342                 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1343 }
1344
1345 static const struct snd_soc_platform_driver rsnd_soc_platform = {
1346         .ops            = &rsnd_pcm_ops,
1347         .pcm_new        = rsnd_pcm_new,
1348 };
1349
1350 static const struct snd_soc_component_driver rsnd_soc_component = {
1351         .name           = "rsnd",
1352 };
1353
1354 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1355                                        struct rsnd_dai_stream *io)
1356 {
1357         int ret;
1358
1359         ret = rsnd_dai_call(probe, io, priv);
1360         if (ret == -EAGAIN) {
1361                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1362                 struct rsnd_mod *mod;
1363                 int i;
1364
1365                 /*
1366                  * Fallback to PIO mode
1367                  */
1368
1369                 /*
1370                  * call "remove" for SSI/SRC/DVC
1371                  * SSI will be switch to PIO mode if it was DMA mode
1372                  * see
1373                  *      rsnd_dma_init()
1374                  *      rsnd_ssi_fallback()
1375                  */
1376                 rsnd_dai_call(remove, io, priv);
1377
1378                 /*
1379                  * remove all mod from io
1380                  * and, re connect ssi
1381                  */
1382                 for_each_rsnd_mod(i, mod, io)
1383                         rsnd_dai_disconnect(mod, io, i);
1384                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1385
1386                 /*
1387                  * fallback
1388                  */
1389                 rsnd_dai_call(fallback, io, priv);
1390
1391                 /*
1392                  * retry to "probe".
1393                  * DAI has SSI which is PIO mode only now.
1394                  */
1395                 ret = rsnd_dai_call(probe, io, priv);
1396         }
1397
1398         return ret;
1399 }
1400
1401 /*
1402  *      rsnd probe
1403  */
1404 static int rsnd_probe(struct platform_device *pdev)
1405 {
1406         struct rsnd_priv *priv;
1407         struct device *dev = &pdev->dev;
1408         struct rsnd_dai *rdai;
1409         int (*probe_func[])(struct rsnd_priv *priv) = {
1410                 rsnd_gen_probe,
1411                 rsnd_dma_probe,
1412                 rsnd_ssi_probe,
1413                 rsnd_ssiu_probe,
1414                 rsnd_src_probe,
1415                 rsnd_ctu_probe,
1416                 rsnd_mix_probe,
1417                 rsnd_dvc_probe,
1418                 rsnd_cmd_probe,
1419                 rsnd_adg_probe,
1420                 rsnd_dai_probe,
1421         };
1422         int ret, i;
1423
1424         /*
1425          *      init priv data
1426          */
1427         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1428         if (!priv)
1429                 return -ENODEV;
1430
1431         priv->pdev      = pdev;
1432         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1433         spin_lock_init(&priv->lock);
1434
1435         /*
1436          *      init each module
1437          */
1438         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1439                 ret = probe_func[i](priv);
1440                 if (ret)
1441                         return ret;
1442         }
1443
1444         for_each_rsnd_dai(rdai, priv, i) {
1445                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1446                 if (ret)
1447                         goto exit_snd_probe;
1448
1449                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1450                 if (ret)
1451                         goto exit_snd_probe;
1452         }
1453
1454         dev_set_drvdata(dev, priv);
1455
1456         /*
1457          *      asoc register
1458          */
1459         ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1460         if (ret < 0) {
1461                 dev_err(dev, "cannot snd soc register\n");
1462                 return ret;
1463         }
1464
1465         ret = snd_soc_register_component(dev, &rsnd_soc_component,
1466                                          priv->daidrv, rsnd_rdai_nr(priv));
1467         if (ret < 0) {
1468                 dev_err(dev, "cannot snd dai register\n");
1469                 goto exit_snd_soc;
1470         }
1471
1472         pm_runtime_enable(dev);
1473
1474         dev_info(dev, "probed\n");
1475         return ret;
1476
1477 exit_snd_soc:
1478         snd_soc_unregister_platform(dev);
1479 exit_snd_probe:
1480         for_each_rsnd_dai(rdai, priv, i) {
1481                 rsnd_dai_call(remove, &rdai->playback, priv);
1482                 rsnd_dai_call(remove, &rdai->capture, priv);
1483         }
1484
1485         /*
1486          * adg is very special mod which can't use rsnd_dai_call(remove),
1487          * and it registers ADG clock on probe.
1488          * It should be unregister if probe failed.
1489          * Mainly it is assuming -EPROBE_DEFER case
1490          */
1491         rsnd_adg_remove(priv);
1492
1493         return ret;
1494 }
1495
1496 static int rsnd_remove(struct platform_device *pdev)
1497 {
1498         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1499         struct rsnd_dai *rdai;
1500         void (*remove_func[])(struct rsnd_priv *priv) = {
1501                 rsnd_ssi_remove,
1502                 rsnd_ssiu_remove,
1503                 rsnd_src_remove,
1504                 rsnd_ctu_remove,
1505                 rsnd_mix_remove,
1506                 rsnd_dvc_remove,
1507                 rsnd_cmd_remove,
1508                 rsnd_adg_remove,
1509         };
1510         int ret = 0, i;
1511
1512         pm_runtime_disable(&pdev->dev);
1513
1514         for_each_rsnd_dai(rdai, priv, i) {
1515                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1516                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1517         }
1518
1519         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1520                 remove_func[i](priv);
1521
1522         snd_soc_unregister_component(&pdev->dev);
1523         snd_soc_unregister_platform(&pdev->dev);
1524
1525         return ret;
1526 }
1527
1528 static int rsnd_suspend(struct device *dev)
1529 {
1530         struct rsnd_priv *priv = dev_get_drvdata(dev);
1531
1532         rsnd_adg_clk_disable(priv);
1533
1534         return 0;
1535 }
1536
1537 static int rsnd_resume(struct device *dev)
1538 {
1539         struct rsnd_priv *priv = dev_get_drvdata(dev);
1540
1541         rsnd_adg_clk_enable(priv);
1542
1543         return 0;
1544 }
1545
1546 static const struct dev_pm_ops rsnd_pm_ops = {
1547         .suspend                = rsnd_suspend,
1548         .resume                 = rsnd_resume,
1549 };
1550
1551 static struct platform_driver rsnd_driver = {
1552         .driver = {
1553                 .name   = "rcar_sound",
1554                 .pm     = &rsnd_pm_ops,
1555                 .of_match_table = rsnd_of_match,
1556         },
1557         .probe          = rsnd_probe,
1558         .remove         = rsnd_remove,
1559 };
1560 module_platform_driver(rsnd_driver);
1561
1562 MODULE_LICENSE("GPL");
1563 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1564 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1565 MODULE_ALIAS("platform:rcar-pcm-audio");