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_S8 |\
 106                    SNDRV_PCM_FMTBIT_S16_LE |\
 107                    SNDRV_PCM_FMTBIT_S24_LE)
 108
 109 static const struct of_device_id rsnd_of_match[] = {
 110         { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
 111         { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
 112         { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 },
 113         /* Special Handling */
 114         { .compatible = "renesas,rcar_sound-r8a77990", .data = (void *)(RSND_GEN3 | RSND_SOC_E) },
 115         {},
 116 };
 117 MODULE_DEVICE_TABLE(of, rsnd_of_match);
 118
 119 /*
 120  *      rsnd_mod functions
 121  */
 122 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
 123 {
 124         if (mod->type != type) {
 125                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 126                 struct device *dev = rsnd_priv_to_dev(priv);
 127
 128                 dev_warn(dev, "%s is not your expected module\n",
 129                          rsnd_mod_name(mod));
 130         }
 131 }
 132
 133 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
 134                                   struct rsnd_mod *mod)
 135 {
 136         if (!mod || !mod->ops || !mod->ops->dma_req)
 137                 return NULL;
 138
 139         return mod->ops->dma_req(io, mod);
 140 }
 141
 142 #define MOD_NAME_NUM   5
 143 #define MOD_NAME_SIZE 16
 144 char *rsnd_mod_name(struct rsnd_mod *mod)
 145 {
 146         static char names[MOD_NAME_NUM][MOD_NAME_SIZE];
 147         static int num;
 148         char *name = names[num];
 149
 150         num++;
 151         if (num >= MOD_NAME_NUM)
 152                 num = 0;
 153
 154         /*
 155          * Let's use same char to avoid pointlessness memory
 156          * Thus, rsnd_mod_name() should be used immediately
 157          * Don't keep pointer
 158          */
 159         if ((mod)->ops->id_sub) {
 160                 snprintf(name, MOD_NAME_SIZE, "%s[%d%d]",
 161                          mod->ops->name,
 162                          rsnd_mod_id(mod),
 163                          rsnd_mod_id_sub(mod));
 164         } else {
 165                 snprintf(name, MOD_NAME_SIZE, "%s[%d]",
 166                          mod->ops->name,
 167                          rsnd_mod_id(mod));
 168         }
 169
 170         return name;
 171 }
 172
 173 u32 *rsnd_mod_get_status(struct rsnd_mod *mod,
 174                          struct rsnd_dai_stream *io,
 175                          enum rsnd_mod_type type)
 176 {
 177         return &mod->status;
 178 }
 179
 180 int rsnd_mod_id_raw(struct rsnd_mod *mod)
 181 {
 182         return mod->id;
 183 }
 184
 185 int rsnd_mod_id(struct rsnd_mod *mod)
 186 {
 187         if ((mod)->ops->id)
 188                 return (mod)->ops->id(mod);
 189
 190         return rsnd_mod_id_raw(mod);
 191 }
 192
 193 int rsnd_mod_id_sub(struct rsnd_mod *mod)
 194 {
 195         if ((mod)->ops->id_sub)
 196                 return (mod)->ops->id_sub(mod);
 197
 198         return 0;
 199 }
 200
 201 int rsnd_mod_init(struct rsnd_priv *priv,
 202                   struct rsnd_mod *mod,
 203                   struct rsnd_mod_ops *ops,
 204                   struct clk *clk,
 205                   enum rsnd_mod_type type,
 206                   int id)
 207 {
 208         int ret = clk_prepare(clk);
 209
 210         if (ret)
 211                 return ret;
 212
 213         mod->id         = id;
 214         mod->ops        = ops;
 215         mod->type       = type;
 216         mod->clk        = clk;
 217         mod->priv       = priv;
 218
 219         return ret;
 220 }
 221
 222 void rsnd_mod_quit(struct rsnd_mod *mod)
 223 {
 224         clk_unprepare(mod->clk);
 225         mod->clk = NULL;
 226 }
 227
 228 void rsnd_mod_interrupt(struct rsnd_mod *mod,
 229                         void (*callback)(struct rsnd_mod *mod,
 230                                          struct rsnd_dai_stream *io))
 231 {
 232         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 233         struct rsnd_dai_stream *io;
 234         struct rsnd_dai *rdai;
 235         int i;
 236
 237         for_each_rsnd_dai(rdai, priv, i) {
 238                 io = &rdai->playback;
 239                 if (mod == io->mod[mod->type])
 240                         callback(mod, io);
 241
 242                 io = &rdai->capture;
 243                 if (mod == io->mod[mod->type])
 244                         callback(mod, io);
 245         }
 246 }
 247
 248 int rsnd_io_is_working(struct rsnd_dai_stream *io)
 249 {
 250         /* see rsnd_dai_stream_init/quit() */
 251         if (io->substream)
 252                 return snd_pcm_running(io->substream);
 253
 254         return 0;
 255 }
 256
 257 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io,
 258                                               struct snd_pcm_hw_params *params)
 259 {
 260         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 261
 262         /*
 263          * params will be added when refine
 264          * see
 265          *      __rsnd_soc_hw_rule_rate()
 266          *      __rsnd_soc_hw_rule_channels()
 267          */
 268         if (params)
 269                 return params_channels(params);
 270         else
 271                 return runtime->channels;
 272 }
 273
 274 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io,
 275                                                struct snd_pcm_hw_params *params)
 276 {
 277         int chan = rsnd_runtime_channel_original_with_params(io, params);
 278         struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
 279
 280         if (ctu_mod) {
 281                 u32 converted_chan = rsnd_io_converted_chan(io);
 282
 283                 /*
 284                  * !! Note !!
 285                  *
 286                  * converted_chan will be used for CTU,
 287                  * or TDM Split mode.
 288                  * User shouldn't use CTU with TDM Split mode.
 289                  */
 290                 if (rsnd_runtime_is_tdm_split(io)) {
 291                         struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));
 292
 293                         dev_err(dev, "CTU and TDM Split should be used\n");
 294                 }
 295
 296                 if (converted_chan)
 297                         return converted_chan;
 298         }
 299
 300         return chan;
 301 }
 302
 303 int rsnd_channel_normalization(int chan)
 304 {
 305         if ((chan > 8) || (chan < 0))
 306                 return 0;
 307
 308         /* TDM Extend Mode needs 8ch */
 309         if (chan == 6)
 310                 chan = 8;
 311
 312         return chan;
 313 }
 314
 315 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io,
 316                                              struct snd_pcm_hw_params *params)
 317 {
 318         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 319         int chan = rsnd_io_is_play(io) ?
 320                 rsnd_runtime_channel_after_ctu_with_params(io, params) :
 321                 rsnd_runtime_channel_original_with_params(io, params);
 322
 323         /* Use Multi SSI */
 324         if (rsnd_runtime_is_multi_ssi(io))
 325                 chan /= rsnd_rdai_ssi_lane_get(rdai);
 326
 327         return rsnd_channel_normalization(chan);
 328 }
 329
 330 int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io)
 331 {
 332         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 333         int lane = rsnd_rdai_ssi_lane_get(rdai);
 334         int chan = rsnd_io_is_play(io) ?
 335                 rsnd_runtime_channel_after_ctu(io) :
 336                 rsnd_runtime_channel_original(io);
 337
 338         return (chan > 2) && (lane > 1);
 339 }
 340
 341 int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io)
 342 {
 343         return rsnd_runtime_channel_for_ssi(io) >= 6;
 344 }
 345
 346 int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io)
 347 {
 348         return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT);
 349 }
 350
 351 /*
 352  *      ADINR function
 353  */
 354 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 355 {
 356         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 357         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 358         struct device *dev = rsnd_priv_to_dev(priv);
 359
 360         switch (snd_pcm_format_width(runtime->format)) {
 361         case 8:
 362                 return 16 << 16;
 363         case 16:
 364                 return 8 << 16;
 365         case 24:
 366                 return 0 << 16;
 367         }
 368
 369         dev_warn(dev, "not supported sample bits\n");
 370
 371         return 0;
 372 }
 373
 374 /*
 375  *      DALIGN function
 376  */
 377 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
 378 {
 379         struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
 380         struct rsnd_mod *target;
 381         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 382
 383         /*
 384          * *Hardware* L/R and *Software* L/R are inverted for 16bit data.
 385          *          31..16 15...0
 386          *      HW: [L ch] [R ch]
 387          *      SW: [R ch] [L ch]
 388          * We need to care about inversion timing to control
 389          * Playback/Capture correctly.
 390          * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
 391          *
 392          * sL/R : software L/R
 393          * hL/R : hardware L/R
 394          * (*)  : conversion timing
 395          *
 396          * Playback
 397          *           sL/R (*) hL/R     hL/R     hL/R      hL/R     hL/R
 398          *      [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
 399          *
 400          * Capture
 401          *           hL/R     hL/R      hL/R     hL/R     hL/R (*) sL/R
 402          *      codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
 403          */
 404         if (rsnd_io_is_play(io)) {
 405                 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 406
 407                 target = src ? src : ssiu;
 408         } else {
 409                 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
 410
 411                 target = cmd ? cmd : ssiu;
 412         }
 413
 414         /* Non target mod or non 16bit needs normal DALIGN */
 415         if ((snd_pcm_format_width(runtime->format) != 16) ||
 416             (mod != target))
 417                 return 0x76543210;
 418         /* Target mod needs inverted DALIGN when 16bit */
 419         else
 420                 return 0x67452301;
 421 }
 422
 423 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
 424 {
 425         enum rsnd_mod_type playback_mods[] = {
 426                 RSND_MOD_SRC,
 427                 RSND_MOD_CMD,
 428                 RSND_MOD_SSIU,
 429         };
 430         enum rsnd_mod_type capture_mods[] = {
 431                 RSND_MOD_CMD,
 432                 RSND_MOD_SRC,
 433                 RSND_MOD_SSIU,
 434         };
 435         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 436         struct rsnd_mod *tmod = NULL;
 437         enum rsnd_mod_type *mods =
 438                 rsnd_io_is_play(io) ?
 439                 playback_mods : capture_mods;
 440         int i;
 441
 442         /*
 443          * This is needed for 24bit data
 444          * We need to shift 8bit
 445          *
 446          * Linux 24bit data is located as 0x00******
 447          * HW    24bit data is located as 0x******00
 448          *
 449          */
 450         if (snd_pcm_format_width(runtime->format) != 24)
 451                 return 0;
 452
 453         for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
 454                 tmod = rsnd_io_to_mod(io, mods[i]);
 455                 if (tmod)
 456                         break;
 457         }
 458
 459         if (tmod != mod)
 460                 return 0;
 461
 462         if (rsnd_io_is_play(io))
 463                 return  (0 << 20) | /* shift to Left */
 464                         (8 << 16);  /* 8bit */
 465         else
 466                 return  (1 << 20) | /* shift to Right */
 467                         (8 << 16);  /* 8bit */
 468 }
 469
 470 /*
 471  *      rsnd_dai functions
 472  */
 473 struct rsnd_mod *rsnd_mod_next(int *iterator,
 474                                struct rsnd_dai_stream *io,
 475                                enum rsnd_mod_type *array,
 476                                int array_size)
 477 {
 478         struct rsnd_mod *mod;
 479         enum rsnd_mod_type type;
 480         int max = array ? array_size : RSND_MOD_MAX;
 481
 482         for (; *iterator < max; (*iterator)++) {
 483                 type = (array) ? array[*iterator] : *iterator;
 484                 mod = rsnd_io_to_mod(io, type);
 485                 if (mod)
 486                         return mod;
 487         }
 488
 489         return NULL;
 490 }
 491
 492 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
 493         {
 494                 /* CAPTURE */
 495                 RSND_MOD_AUDMAPP,
 496                 RSND_MOD_AUDMA,
 497                 RSND_MOD_DVC,
 498                 RSND_MOD_MIX,
 499                 RSND_MOD_CTU,
 500                 RSND_MOD_CMD,
 501                 RSND_MOD_SRC,
 502                 RSND_MOD_SSIU,
 503                 RSND_MOD_SSIM3,
 504                 RSND_MOD_SSIM2,
 505                 RSND_MOD_SSIM1,
 506                 RSND_MOD_SSIP,
 507                 RSND_MOD_SSI,
 508         }, {
 509                 /* PLAYBACK */
 510                 RSND_MOD_AUDMAPP,
 511                 RSND_MOD_AUDMA,
 512                 RSND_MOD_SSIM3,
 513                 RSND_MOD_SSIM2,
 514                 RSND_MOD_SSIM1,
 515                 RSND_MOD_SSIP,
 516                 RSND_MOD_SSI,
 517                 RSND_MOD_SSIU,
 518                 RSND_MOD_DVC,
 519                 RSND_MOD_MIX,
 520                 RSND_MOD_CTU,
 521                 RSND_MOD_CMD,
 522                 RSND_MOD_SRC,
 523         },
 524 };
 525
 526 static int rsnd_status_update(u32 *status,
 527                               int shift, int add, int timing)
 528 {
 529         u32 mask        = 0xF << shift;
 530         u8 val          = (*status >> shift) & 0xF;
 531         u8 next_val     = (val + add) & 0xF;
 532         int func_call   = (val == timing);
 533
 534         if (next_val == 0xF) /* underflow case */
 535                 func_call = 0;
 536         else
 537                 *status = (*status & ~mask) + (next_val << shift);
 538
 539         return func_call;
 540 }
 541
 542 #define rsnd_dai_call(fn, io, param...)                                 \
 543 ({                                                                      \
 544         struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));     \
 545         struct rsnd_mod *mod;                                           \
 546         int is_play = rsnd_io_is_play(io);                              \
 547         int ret = 0, i;                                                 \
 548         enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
 549         for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
 550                 int tmp = 0;                                            \
 551                 u32 *status = mod->ops->get_status(mod, io, types[i]);  \
 552                 int func_call = rsnd_status_update(status,              \
 553                                                 __rsnd_mod_shift_##fn,  \
 554                                                 __rsnd_mod_add_##fn,    \
 555                                                 __rsnd_mod_call_##fn);  \
 556                 rsnd_dbg_dai_call(dev, "%s\t0x%08x %s\n",               \
 557                         rsnd_mod_name(mod), *status,    \
 558                         (func_call && (mod)->ops->fn) ? #fn : "");      \
 559                 if (func_call && (mod)->ops->fn)                        \
 560                         tmp = (mod)->ops->fn(mod, io, param);           \
 561                 if (tmp && (tmp != -EPROBE_DEFER))                      \
 562                         dev_err(dev, "%s : %s error %d\n",              \
 563                                 rsnd_mod_name(mod), #fn, tmp);          \
 564                 ret |= tmp;                                             \
 565         }                                                               \
 566         ret;                                                            \
 567 })
 568
 569 int rsnd_dai_connect(struct rsnd_mod *mod,
 570                      struct rsnd_dai_stream *io,
 571                      enum rsnd_mod_type type)
 572 {
 573         struct rsnd_priv *priv;
 574         struct device *dev;
 575
 576         if (!mod)
 577                 return -EIO;
 578
 579         if (io->mod[type] == mod)
 580                 return 0;
 581
 582         if (io->mod[type])
 583                 return -EINVAL;
 584
 585         priv = rsnd_mod_to_priv(mod);
 586         dev = rsnd_priv_to_dev(priv);
 587
 588         io->mod[type] = mod;
 589
 590         dev_dbg(dev, "%s is connected to io (%s)\n",
 591                 rsnd_mod_name(mod),
 592                 rsnd_io_is_play(io) ? "Playback" : "Capture");
 593
 594         return 0;
 595 }
 596
 597 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 598                                 struct rsnd_dai_stream *io,
 599                                 enum rsnd_mod_type type)
 600 {
 601         io->mod[type] = NULL;
 602 }
 603
 604 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
 605                             int max_channels)
 606 {
 607         if (max_channels > 0)
 608                 rdai->max_channels = max_channels;
 609
 610         return rdai->max_channels;
 611 }
 612
 613 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
 614                             int ssi_lane)
 615 {
 616         if (ssi_lane > 0)
 617                 rdai->ssi_lane = ssi_lane;
 618
 619         return rdai->ssi_lane;
 620 }
 621
 622 int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width)
 623 {
 624         if (width > 0)
 625                 rdai->chan_width = width;
 626
 627         return rdai->chan_width;
 628 }
 629
 630 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 631 {
 632         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 633                 return NULL;
 634
 635         return priv->rdai + id;
 636 }
 637
 638 static struct snd_soc_dai_driver
 639 *rsnd_daidrv_get(struct rsnd_priv *priv, int id)
 640 {
 641         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 642                 return NULL;
 643
 644         return priv->daidrv + id;
 645 }
 646
 647 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
 648 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 649 {
 650         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 651
 652         return rsnd_rdai_get(priv, dai->id);
 653 }
 654
 655 /*
 656  *      rsnd_soc_dai functions
 657  */
 658 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
 659 {
 660         struct snd_pcm_substream *substream = io->substream;
 661
 662         /*
 663          * this function should be called...
 664          *
 665          * - if rsnd_dai_pointer_update() returns true
 666          * - without spin lock
 667          */
 668
 669         snd_pcm_period_elapsed(substream);
 670 }
 671
 672 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 673                                 struct snd_pcm_substream *substream)
 674 {
 675         io->substream           = substream;
 676 }
 677
 678 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
 679 {
 680         io->substream           = NULL;
 681 }
 682
 683 static
 684 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 685 {
 686         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 687
 688         return  rtd->cpu_dai;
 689 }
 690
 691 static
 692 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 693                                         struct snd_pcm_substream *substream)
 694 {
 695         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 696                 return &rdai->playback;
 697         else
 698                 return &rdai->capture;
 699 }
 700
 701 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 702                             struct snd_soc_dai *dai)
 703 {
 704         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 705         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 706         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 707         int ret;
 708         unsigned long flags;
 709
 710         spin_lock_irqsave(&priv->lock, flags);
 711
 712         switch (cmd) {
 713         case SNDRV_PCM_TRIGGER_START:
 714         case SNDRV_PCM_TRIGGER_RESUME:
 715                 ret = rsnd_dai_call(init, io, priv);
 716                 if (ret < 0)
 717                         goto dai_trigger_end;
 718
 719                 ret = rsnd_dai_call(start, io, priv);
 720                 if (ret < 0)
 721                         goto dai_trigger_end;
 722
 723                 ret = rsnd_dai_call(irq, io, priv, 1);
 724                 if (ret < 0)
 725                         goto dai_trigger_end;
 726
 727                 break;
 728         case SNDRV_PCM_TRIGGER_STOP:
 729         case SNDRV_PCM_TRIGGER_SUSPEND:
 730                 ret = rsnd_dai_call(irq, io, priv, 0);
 731
 732                 ret |= rsnd_dai_call(stop, io, priv);
 733
 734                 ret |= rsnd_dai_call(quit, io, priv);
 735
 736                 break;
 737         default:
 738                 ret = -EINVAL;
 739         }
 740
 741 dai_trigger_end:
 742         spin_unlock_irqrestore(&priv->lock, flags);
 743
 744         return ret;
 745 }
 746
 747 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 748 {
 749         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 750
 751         /* set master/slave audio interface */
 752         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 753         case SND_SOC_DAIFMT_CBM_CFM:
 754                 rdai->clk_master = 0;
 755                 break;
 756         case SND_SOC_DAIFMT_CBS_CFS:
 757                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 758                 break;
 759         default:
 760                 return -EINVAL;
 761         }
 762
 763         /* set format */
 764         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 765         case SND_SOC_DAIFMT_I2S:
 766                 rdai->sys_delay = 0;
 767                 rdai->data_alignment = 0;
 768                 rdai->frm_clk_inv = 0;
 769                 break;
 770         case SND_SOC_DAIFMT_LEFT_J:
 771         case SND_SOC_DAIFMT_DSP_B:
 772                 rdai->sys_delay = 1;
 773                 rdai->data_alignment = 0;
 774                 rdai->frm_clk_inv = 1;
 775                 break;
 776         case SND_SOC_DAIFMT_RIGHT_J:
 777                 rdai->sys_delay = 1;
 778                 rdai->data_alignment = 1;
 779                 rdai->frm_clk_inv = 1;
 780                 break;
 781         case SND_SOC_DAIFMT_DSP_A:
 782                 rdai->sys_delay = 0;
 783                 rdai->data_alignment = 0;
 784                 rdai->frm_clk_inv = 1;
 785                 break;
 786         }
 787
 788         /* set clock inversion */
 789         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 790         case SND_SOC_DAIFMT_NB_IF:
 791                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 792                 break;
 793         case SND_SOC_DAIFMT_IB_NF:
 794                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 795                 break;
 796         case SND_SOC_DAIFMT_IB_IF:
 797                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 798                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 799                 break;
 800         case SND_SOC_DAIFMT_NB_NF:
 801         default:
 802                 break;
 803         }
 804
 805         return 0;
 806 }
 807
 808 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 809                                      u32 tx_mask, u32 rx_mask,
 810                                      int slots, int slot_width)
 811 {
 812         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 813         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 814         struct device *dev = rsnd_priv_to_dev(priv);
 815
 816         switch (slot_width) {
 817         case 16:
 818         case 24:
 819         case 32:
 820                 break;
 821         default:
 822                 /* use default */
 823                 slot_width = 32;
 824         }
 825
 826         switch (slots) {
 827         case 2:
 828                 /* TDM Split Mode */
 829         case 6:
 830         case 8:
 831                 /* TDM Extend Mode */
 832                 rsnd_rdai_channels_set(rdai, slots);
 833                 rsnd_rdai_ssi_lane_set(rdai, 1);
 834                 rsnd_rdai_width_set(rdai, slot_width);
 835                 break;
 836         default:
 837                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
 838                 return -EINVAL;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static unsigned int rsnd_soc_hw_channels_list[] = {
 845         2, 6, 8,
 846 };
 847
 848 static unsigned int rsnd_soc_hw_rate_list[] = {
 849           8000,
 850          11025,
 851          16000,
 852          22050,
 853          32000,
 854          44100,
 855          48000,
 856          64000,
 857          88200,
 858          96000,
 859         176400,
 860         192000,
 861 };
 862
 863 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai,
 864                             unsigned int *list, int list_num,
 865                             struct snd_interval *baseline, struct snd_interval *iv)
 866 {
 867         struct snd_interval p;
 868         unsigned int rate;
 869         int i;
 870
 871         snd_interval_any(&p);
 872         p.min = UINT_MAX;
 873         p.max = 0;
 874
 875         for (i = 0; i < list_num; i++) {
 876
 877                 if (!snd_interval_test(iv, list[i]))
 878                         continue;
 879
 880                 rate = rsnd_ssi_clk_query(rdai,
 881                                           baseline->min, list[i], NULL);
 882                 if (rate > 0) {
 883                         p.min = min(p.min, list[i]);
 884                         p.max = max(p.max, list[i]);
 885                 }
 886
 887                 rate = rsnd_ssi_clk_query(rdai,
 888                                           baseline->max, list[i], NULL);
 889                 if (rate > 0) {
 890                         p.min = min(p.min, list[i]);
 891                         p.max = max(p.max, list[i]);
 892                 }
 893         }
 894
 895         return snd_interval_refine(iv, &p);
 896 }
 897
 898 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
 899                                  struct snd_pcm_hw_rule *rule)
 900 {
 901         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 902         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 903         struct snd_interval ic;
 904         struct rsnd_dai_stream *io = rule->private;
 905         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 906
 907         /*
 908          * possible sampling rate limitation is same as
 909          * 2ch if it supports multi ssi
 910          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 911          */
 912         ic = *ic_;
 913         ic.min =
 914         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 915
 916         return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list,
 917                                 ARRAY_SIZE(rsnd_soc_hw_rate_list),
 918                                 &ic, ir);
 919 }
 920
 921 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
 922                                      struct snd_pcm_hw_rule *rule)
 923 {
 924         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 925         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 926         struct snd_interval ic;
 927         struct rsnd_dai_stream *io = rule->private;
 928         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 929
 930         /*
 931          * possible sampling rate limitation is same as
 932          * 2ch if it supports multi ssi
 933          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 934          */
 935         ic = *ic_;
 936         ic.min =
 937         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 938
 939         return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list,
 940                                 ARRAY_SIZE(rsnd_soc_hw_channels_list),
 941                                 ir, &ic);
 942 }
 943
 944 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
 945         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 946                         SNDRV_PCM_INFO_MMAP             |
 947                         SNDRV_PCM_INFO_MMAP_VALID,
 948         .buffer_bytes_max       = 64 * 1024,
 949         .period_bytes_min       = 32,
 950         .period_bytes_max       = 8192,
 951         .periods_min            = 1,
 952         .periods_max            = 32,
 953         .fifo_size              = 256,
 954 };
 955
 956 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
 957                                 struct snd_soc_dai *dai)
 958 {
 959         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 960         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 961         struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
 962         struct snd_pcm_runtime *runtime = substream->runtime;
 963         unsigned int max_channels = rsnd_rdai_channels_get(rdai);
 964         int i;
 965
 966         rsnd_dai_stream_init(io, substream);
 967
 968         /*
 969          * Channel Limitation
 970          * It depends on Platform design
 971          */
 972         constraint->list        = rsnd_soc_hw_channels_list;
 973         constraint->count       = 0;
 974         constraint->mask        = 0;
 975
 976         for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
 977                 if (rsnd_soc_hw_channels_list[i] > max_channels)
 978                         break;
 979                 constraint->count = i + 1;
 980         }
 981
 982         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 983
 984         snd_pcm_hw_constraint_list(runtime, 0,
 985                                    SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
 986
 987         snd_pcm_hw_constraint_integer(runtime,
 988                                       SNDRV_PCM_HW_PARAM_PERIODS);
 989
 990         /*
 991          * Sampling Rate / Channel Limitation
 992          * It depends on Clock Master Mode
 993          */
 994         if (rsnd_rdai_is_clk_master(rdai)) {
 995                 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 996
 997                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 998                                     rsnd_soc_hw_rule_rate,
 999                                     is_play ? &rdai->playback : &rdai->capture,
1000                                     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
1001                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1002                                     rsnd_soc_hw_rule_channels,
1003                                     is_play ? &rdai->playback : &rdai->capture,
1004                                     SNDRV_PCM_HW_PARAM_RATE, -1);
1005         }
1006
1007         return 0;
1008 }
1009
1010 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
1011                                   struct snd_soc_dai *dai)
1012 {
1013         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1014         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1015         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1016
1017         /*
1018          * call rsnd_dai_call without spinlock
1019          */
1020         rsnd_dai_call(cleanup, io, priv);
1021
1022         rsnd_dai_stream_quit(io);
1023 }
1024
1025 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
1026                                 struct snd_soc_dai *dai)
1027 {
1028         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
1029         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1030         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1031
1032         return rsnd_dai_call(prepare, io, priv);
1033 }
1034
1035 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
1036         .startup        = rsnd_soc_dai_startup,
1037         .shutdown       = rsnd_soc_dai_shutdown,
1038         .trigger        = rsnd_soc_dai_trigger,
1039         .set_fmt        = rsnd_soc_dai_set_fmt,
1040         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
1041         .prepare        = rsnd_soc_dai_prepare,
1042 };
1043
1044 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv,
1045                                       struct rsnd_dai_stream *io,
1046                                       struct device_node *dai_np)
1047 {
1048         struct device *dev = rsnd_priv_to_dev(priv);
1049         struct device_node *ssiu_np = rsnd_ssiu_of_node(priv);
1050         struct device_node *np;
1051         int is_play = rsnd_io_is_play(io);
1052         int i, j;
1053
1054         if (!ssiu_np)
1055                 return;
1056
1057         /*
1058          * This driver assumes that it is TDM Split mode
1059          * if it includes ssiu node
1060          */
1061         for (i = 0;; i++) {
1062                 struct device_node *node = is_play ?
1063                         of_parse_phandle(dai_np, "playback", i) :
1064                         of_parse_phandle(dai_np, "capture",  i);
1065
1066                 if (!node)
1067                         break;
1068
1069                 j = 0;
1070                 for_each_child_of_node(ssiu_np, np) {
1071                         if (np == node) {
1072                                 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT);
1073                                 dev_dbg(dev, "%s is part of TDM Split\n", io->name);
1074                         }
1075                         j++;
1076                 }
1077
1078         }
1079 }
1080
1081 static void rsnd_parse_connect_simple(struct rsnd_priv *priv,
1082                                       struct rsnd_dai_stream *io,
1083                                       struct device_node *dai_np)
1084 {
1085         if (!rsnd_io_to_mod_ssi(io))
1086                 return;
1087
1088         rsnd_parse_tdm_split_mode(priv, io, dai_np);
1089 }
1090
1091 static void rsnd_parse_connect_graph(struct rsnd_priv *priv,
1092                                      struct rsnd_dai_stream *io,
1093                                      struct device_node *endpoint)
1094 {
1095         struct device *dev = rsnd_priv_to_dev(priv);
1096         struct device_node *remote_node = of_graph_get_remote_port_parent(endpoint);
1097
1098         if (!rsnd_io_to_mod_ssi(io))
1099                 return;
1100
1101         /* HDMI0 */
1102         if (strstr(remote_node->full_name, "hdmi@fead0000")) {
1103                 rsnd_flags_set(io, RSND_STREAM_HDMI0);
1104                 dev_dbg(dev, "%s connected to HDMI0\n", io->name);
1105         }
1106
1107         /* HDMI1 */
1108         if (strstr(remote_node->full_name, "hdmi@feae0000")) {
1109                 rsnd_flags_set(io, RSND_STREAM_HDMI1);
1110                 dev_dbg(dev, "%s connected to HDMI1\n", io->name);
1111         }
1112
1113         rsnd_parse_tdm_split_mode(priv, io, endpoint);
1114 }
1115
1116 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
1117                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
1118                 struct device_node *node,
1119                 struct device_node *playback,
1120                 struct device_node *capture)
1121 {
1122         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1123         struct device_node *np;
1124         struct rsnd_mod *mod;
1125         int i;
1126
1127         if (!node)
1128                 return;
1129
1130         i = 0;
1131         for_each_child_of_node(node, np) {
1132                 mod = mod_get(priv, i);
1133                 if (np == playback)
1134                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
1135                 if (np == capture)
1136                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
1137                 i++;
1138         }
1139
1140         of_node_put(node);
1141 }
1142
1143 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1144                                             int *is_graph)
1145 {
1146         struct device *dev = rsnd_priv_to_dev(priv);
1147         struct device_node *np = dev->of_node;
1148         struct device_node *dai_node;
1149         struct device_node *ret;
1150
1151         *is_graph = 0;
1152
1153         /*
1154          * parse both previous dai (= rcar_sound,dai), and
1155          * graph dai (= ports/port)
1156          */
1157         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1158         if (dai_node) {
1159                 ret = dai_node;
1160                 goto of_node_compatible;
1161         }
1162
1163         ret = np;
1164
1165         dai_node = of_graph_get_next_endpoint(np, NULL);
1166         if (dai_node)
1167                 goto of_node_graph;
1168
1169         return NULL;
1170
1171 of_node_graph:
1172         *is_graph = 1;
1173 of_node_compatible:
1174         of_node_put(dai_node);
1175
1176         return ret;
1177 }
1178
1179
1180 #define PREALLOC_BUFFER         (32 * 1024)
1181 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1182
1183 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1184                                   struct rsnd_dai_stream *io,
1185                                   int stream)
1186 {
1187         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1188         struct device *dev = rsnd_priv_to_dev(priv);
1189         struct snd_pcm_substream *substream;
1190
1191         /*
1192          * use Audio-DMAC dev if we can use IPMMU
1193          * see
1194          *      rsnd_dmaen_attach()
1195          */
1196         if (io->dmac_dev)
1197                 dev = io->dmac_dev;
1198
1199         for (substream = rtd->pcm->streams[stream].substream;
1200              substream;
1201              substream = substream->next) {
1202                 snd_pcm_lib_preallocate_pages(substream,
1203                                               SNDRV_DMA_TYPE_DEV,
1204                                               dev,
1205                                               PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd,
1212                         struct snd_soc_dai *dai)
1213 {
1214         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1215         int ret;
1216
1217         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1218         if (ret)
1219                 return ret;
1220
1221         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1222         if (ret)
1223                 return ret;
1224
1225         ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1226                                      SNDRV_PCM_STREAM_PLAYBACK);
1227         if (ret)
1228                 return ret;
1229
1230         ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1231                                      SNDRV_PCM_STREAM_CAPTURE);
1232         if (ret)
1233                 return ret;
1234
1235         return 0;
1236 }
1237
1238 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1239                              struct device_node *dai_np,
1240                              int dai_i)
1241 {
1242         struct device_node *playback, *capture;
1243         struct rsnd_dai_stream *io_playback;
1244         struct rsnd_dai_stream *io_capture;
1245         struct snd_soc_dai_driver *drv;
1246         struct rsnd_dai *rdai;
1247         struct device *dev = rsnd_priv_to_dev(priv);
1248         int io_i;
1249
1250         rdai            = rsnd_rdai_get(priv, dai_i);
1251         drv             = rsnd_daidrv_get(priv, dai_i);
1252         io_playback     = &rdai->playback;
1253         io_capture      = &rdai->capture;
1254
1255         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1256
1257         rdai->priv      = priv;
1258         drv->name       = rdai->name;
1259         drv->ops        = &rsnd_soc_dai_ops;
1260         drv->pcm_new    = rsnd_pcm_new;
1261
1262         snprintf(io_playback->name, RSND_DAI_NAME_SIZE,
1263                  "DAI%d Playback", dai_i);
1264         drv->playback.rates             = RSND_RATES;
1265         drv->playback.formats           = RSND_FMTS;
1266         drv->playback.channels_min      = 2;
1267         drv->playback.channels_max      = 8;
1268         drv->playback.stream_name       = io_playback->name;
1269
1270         snprintf(io_capture->name, RSND_DAI_NAME_SIZE,
1271                  "DAI%d Capture", dai_i);
1272         drv->capture.rates              = RSND_RATES;
1273         drv->capture.formats            = RSND_FMTS;
1274         drv->capture.channels_min       = 2;
1275         drv->capture.channels_max       = 8;
1276         drv->capture.stream_name        = io_capture->name;
1277
1278         io_playback->rdai               = rdai;
1279         io_capture->rdai                = rdai;
1280         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1281         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1282         rsnd_rdai_width_set(rdai, 32);   /* default 32bit width */
1283
1284         for (io_i = 0;; io_i++) {
1285                 playback = of_parse_phandle(dai_np, "playback", io_i);
1286                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1287
1288                 if (!playback && !capture)
1289                         break;
1290
1291                 rsnd_parse_connect_ssi(rdai, playback, capture);
1292                 rsnd_parse_connect_ssiu(rdai, playback, capture);
1293                 rsnd_parse_connect_src(rdai, playback, capture);
1294                 rsnd_parse_connect_ctu(rdai, playback, capture);
1295                 rsnd_parse_connect_mix(rdai, playback, capture);
1296                 rsnd_parse_connect_dvc(rdai, playback, capture);
1297
1298                 of_node_put(playback);
1299                 of_node_put(capture);
1300         }
1301
1302         if (rsnd_ssi_is_pin_sharing(io_capture) ||
1303             rsnd_ssi_is_pin_sharing(io_playback)) {
1304                 /* should have symmetric_rates if pin sharing */
1305                 drv->symmetric_rates = 1;
1306         }
1307
1308         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1309                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1310                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1311 }
1312
1313 static int rsnd_dai_probe(struct rsnd_priv *priv)
1314 {
1315         struct device_node *dai_node;
1316         struct device_node *dai_np;
1317         struct snd_soc_dai_driver *rdrv;
1318         struct device *dev = rsnd_priv_to_dev(priv);
1319         struct rsnd_dai *rdai;
1320         int nr;
1321         int is_graph;
1322         int dai_i;
1323
1324         dai_node = rsnd_dai_of_node(priv, &is_graph);
1325         if (is_graph)
1326                 nr = of_graph_get_endpoint_count(dai_node);
1327         else
1328                 nr = of_get_child_count(dai_node);
1329
1330         if (!nr)
1331                 return -EINVAL;
1332
1333         rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1334         rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1335         if (!rdrv || !rdai)
1336                 return -ENOMEM;
1337
1338         priv->rdai_nr   = nr;
1339         priv->daidrv    = rdrv;
1340         priv->rdai      = rdai;
1341
1342         /*
1343          * parse all dai
1344          */
1345         dai_i = 0;
1346         if (is_graph) {
1347                 for_each_endpoint_of_node(dai_node, dai_np) {
1348                         __rsnd_dai_probe(priv, dai_np, dai_i);
1349                         if (rsnd_is_gen3(priv)) {
1350                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1351
1352                                 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np);
1353                                 rsnd_parse_connect_graph(priv, &rdai->capture,  dai_np);
1354                         }
1355                         dai_i++;
1356                 }
1357         } else {
1358                 for_each_child_of_node(dai_node, dai_np) {
1359                         __rsnd_dai_probe(priv, dai_np, dai_i);
1360                         if (rsnd_is_gen3(priv)) {
1361                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1362
1363                                 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np);
1364                                 rsnd_parse_connect_simple(priv, &rdai->capture,  dai_np);
1365                         }
1366                         dai_i++;
1367                 }
1368         }
1369
1370         return 0;
1371 }
1372
1373 /*
1374  *              pcm ops
1375  */
1376 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1377                          struct snd_pcm_hw_params *hw_params)
1378 {
1379         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1380         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1381         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1382         struct snd_soc_pcm_runtime *fe = substream->private_data;
1383         int ret;
1384
1385         /*
1386          * rsnd assumes that it might be used under DPCM if user want to use
1387          * channel / rate convert. Then, rsnd should be FE.
1388          * And then, this function will be called *after* BE settings.
1389          * this means, each BE already has fixuped hw_params.
1390          * see
1391          *      dpcm_fe_dai_hw_params()
1392          *      dpcm_be_dai_hw_params()
1393          */
1394         io->converted_rate = 0;
1395         io->converted_chan = 0;
1396         if (fe->dai_link->dynamic) {
1397                 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1398                 struct device *dev = rsnd_priv_to_dev(priv);
1399                 struct snd_soc_dpcm *dpcm;
1400                 struct snd_pcm_hw_params *be_params;
1401                 int stream = substream->stream;
1402
1403                 for_each_dpcm_be(fe, stream, dpcm) {
1404                         be_params = &dpcm->hw_params;
1405                         if (params_channels(hw_params) != params_channels(be_params))
1406                                 io->converted_chan = params_channels(be_params);
1407                         if (params_rate(hw_params) != params_rate(be_params))
1408                                 io->converted_rate = params_rate(be_params);
1409                 }
1410                 if (io->converted_chan)
1411                         dev_dbg(dev, "convert channels = %d\n", io->converted_chan);
1412                 if (io->converted_rate)
1413                         dev_dbg(dev, "convert rate     = %d\n", io->converted_rate);
1414         }
1415
1416         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1417         if (ret)
1418                 return ret;
1419
1420         return snd_pcm_lib_malloc_pages(substream,
1421                                         params_buffer_bytes(hw_params));
1422 }
1423
1424 static int rsnd_hw_free(struct snd_pcm_substream *substream)
1425 {
1426         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1427         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1428         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1429         int ret;
1430
1431         ret = rsnd_dai_call(hw_free, io, substream);
1432         if (ret)
1433                 return ret;
1434
1435         return snd_pcm_lib_free_pages(substream);
1436 }
1437
1438 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1439 {
1440         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1441         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1442         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1443         snd_pcm_uframes_t pointer = 0;
1444
1445         rsnd_dai_call(pointer, io, &pointer);
1446
1447         return pointer;
1448 }
1449
1450 static const struct snd_pcm_ops rsnd_pcm_ops = {
1451         .ioctl          = snd_pcm_lib_ioctl,
1452         .hw_params      = rsnd_hw_params,
1453         .hw_free        = rsnd_hw_free,
1454         .pointer        = rsnd_pointer,
1455 };
1456
1457 /*
1458  *              snd_kcontrol
1459  */
1460 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1461                            struct snd_ctl_elem_info *uinfo)
1462 {
1463         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1464
1465         if (cfg->texts) {
1466                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1467                 uinfo->count = cfg->size;
1468                 uinfo->value.enumerated.items = cfg->max;
1469                 if (uinfo->value.enumerated.item >= cfg->max)
1470                         uinfo->value.enumerated.item = cfg->max - 1;
1471                 strlcpy(uinfo->value.enumerated.name,
1472                         cfg->texts[uinfo->value.enumerated.item],
1473                         sizeof(uinfo->value.enumerated.name));
1474         } else {
1475                 uinfo->count = cfg->size;
1476                 uinfo->value.integer.min = 0;
1477                 uinfo->value.integer.max = cfg->max;
1478                 uinfo->type = (cfg->max == 1) ?
1479                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1480                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1481         }
1482
1483         return 0;
1484 }
1485
1486 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1487                           struct snd_ctl_elem_value *uc)
1488 {
1489         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1490         int i;
1491
1492         for (i = 0; i < cfg->size; i++)
1493                 if (cfg->texts)
1494                         uc->value.enumerated.item[i] = cfg->val[i];
1495                 else
1496                         uc->value.integer.value[i] = cfg->val[i];
1497
1498         return 0;
1499 }
1500
1501 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1502                           struct snd_ctl_elem_value *uc)
1503 {
1504         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1505         int i, change = 0;
1506
1507         if (!cfg->accept(cfg->io))
1508                 return 0;
1509
1510         for (i = 0; i < cfg->size; i++) {
1511                 if (cfg->texts) {
1512                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1513                         cfg->val[i] = uc->value.enumerated.item[i];
1514                 } else {
1515                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1516                         cfg->val[i] = uc->value.integer.value[i];
1517                 }
1518         }
1519
1520         if (change && cfg->update)
1521                 cfg->update(cfg->io, cfg->mod);
1522
1523         return change;
1524 }
1525
1526 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1527 {
1528         return 1;
1529 }
1530
1531 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1532 {
1533         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1534         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1535         struct device *dev = rsnd_priv_to_dev(priv);
1536
1537         if (!runtime) {
1538                 dev_warn(dev, "Can't update kctrl when idle\n");
1539                 return 0;
1540         }
1541
1542         return 1;
1543 }
1544
1545 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1546 {
1547         cfg->cfg.val = cfg->val;
1548
1549         return &cfg->cfg;
1550 }
1551
1552 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1553 {
1554         cfg->cfg.val = &cfg->val;
1555
1556         return &cfg->cfg;
1557 }
1558
1559 const char * const volume_ramp_rate[] = {
1560         "128 dB/1 step",         /* 00000 */
1561         "64 dB/1 step",          /* 00001 */
1562         "32 dB/1 step",          /* 00010 */
1563         "16 dB/1 step",          /* 00011 */
1564         "8 dB/1 step",           /* 00100 */
1565         "4 dB/1 step",           /* 00101 */
1566         "2 dB/1 step",           /* 00110 */
1567         "1 dB/1 step",           /* 00111 */
1568         "0.5 dB/1 step",         /* 01000 */
1569         "0.25 dB/1 step",        /* 01001 */
1570         "0.125 dB/1 step",       /* 01010 = VOLUME_RAMP_MAX_MIX */
1571         "0.125 dB/2 steps",      /* 01011 */
1572         "0.125 dB/4 steps",      /* 01100 */
1573         "0.125 dB/8 steps",      /* 01101 */
1574         "0.125 dB/16 steps",     /* 01110 */
1575         "0.125 dB/32 steps",     /* 01111 */
1576         "0.125 dB/64 steps",     /* 10000 */
1577         "0.125 dB/128 steps",    /* 10001 */
1578         "0.125 dB/256 steps",    /* 10010 */
1579         "0.125 dB/512 steps",    /* 10011 */
1580         "0.125 dB/1024 steps",   /* 10100 */
1581         "0.125 dB/2048 steps",   /* 10101 */
1582         "0.125 dB/4096 steps",   /* 10110 */
1583         "0.125 dB/8192 steps",   /* 10111 = VOLUME_RAMP_MAX_DVC */
1584 };
1585
1586 int rsnd_kctrl_new(struct rsnd_mod *mod,
1587                    struct rsnd_dai_stream *io,
1588                    struct snd_soc_pcm_runtime *rtd,
1589                    const unsigned char *name,
1590                    int (*accept)(struct rsnd_dai_stream *io),
1591                    void (*update)(struct rsnd_dai_stream *io,
1592                                   struct rsnd_mod *mod),
1593                    struct rsnd_kctrl_cfg *cfg,
1594                    const char * const *texts,
1595                    int size,
1596                    u32 max)
1597 {
1598         struct snd_card *card = rtd->card->snd_card;
1599         struct snd_kcontrol *kctrl;
1600         struct snd_kcontrol_new knew = {
1601                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1602                 .name           = name,
1603                 .info           = rsnd_kctrl_info,
1604                 .index          = rtd->num,
1605                 .get            = rsnd_kctrl_get,
1606                 .put            = rsnd_kctrl_put,
1607         };
1608         int ret;
1609
1610         /*
1611          * 1) Avoid duplicate register for DVC with MIX case
1612          * 2) Allow duplicate register for MIX
1613          * 3) re-register if card was rebinded
1614          */
1615         list_for_each_entry(kctrl, &card->controls, list) {
1616                 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1617
1618                 if (c == cfg)
1619                         return 0;
1620         }
1621
1622         if (size > RSND_MAX_CHANNELS)
1623                 return -EINVAL;
1624
1625         kctrl = snd_ctl_new1(&knew, cfg);
1626         if (!kctrl)
1627                 return -ENOMEM;
1628
1629         ret = snd_ctl_add(card, kctrl);
1630         if (ret < 0)
1631                 return ret;
1632
1633         cfg->texts      = texts;
1634         cfg->max        = max;
1635         cfg->size       = size;
1636         cfg->accept     = accept;
1637         cfg->update     = update;
1638         cfg->card       = card;
1639         cfg->kctrl      = kctrl;
1640         cfg->io         = io;
1641         cfg->mod        = mod;
1642
1643         return 0;
1644 }
1645
1646 /*
1647  *              snd_soc_component
1648  */
1649 static const struct snd_soc_component_driver rsnd_soc_component = {
1650         .ops            = &rsnd_pcm_ops,
1651         .name           = "rsnd",
1652 };
1653
1654 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1655                                        struct rsnd_dai_stream *io)
1656 {
1657         int ret;
1658
1659         ret = rsnd_dai_call(probe, io, priv);
1660         if (ret == -EAGAIN) {
1661                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1662                 struct rsnd_mod *mod;
1663                 int i;
1664
1665                 /*
1666                  * Fallback to PIO mode
1667                  */
1668
1669                 /*
1670                  * call "remove" for SSI/SRC/DVC
1671                  * SSI will be switch to PIO mode if it was DMA mode
1672                  * see
1673                  *      rsnd_dma_init()
1674                  *      rsnd_ssi_fallback()
1675                  */
1676                 rsnd_dai_call(remove, io, priv);
1677
1678                 /*
1679                  * remove all mod from io
1680                  * and, re connect ssi
1681                  */
1682                 for_each_rsnd_mod(i, mod, io)
1683                         rsnd_dai_disconnect(mod, io, i);
1684                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1685
1686                 /*
1687                  * fallback
1688                  */
1689                 rsnd_dai_call(fallback, io, priv);
1690
1691                 /*
1692                  * retry to "probe".
1693                  * DAI has SSI which is PIO mode only now.
1694                  */
1695                 ret = rsnd_dai_call(probe, io, priv);
1696         }
1697
1698         return ret;
1699 }
1700
1701 /*
1702  *      rsnd probe
1703  */
1704 static int rsnd_probe(struct platform_device *pdev)
1705 {
1706         struct rsnd_priv *priv;
1707         struct device *dev = &pdev->dev;
1708         struct rsnd_dai *rdai;
1709         int (*probe_func[])(struct rsnd_priv *priv) = {
1710                 rsnd_gen_probe,
1711                 rsnd_dma_probe,
1712                 rsnd_ssi_probe,
1713                 rsnd_ssiu_probe,
1714                 rsnd_src_probe,
1715                 rsnd_ctu_probe,
1716                 rsnd_mix_probe,
1717                 rsnd_dvc_probe,
1718                 rsnd_cmd_probe,
1719                 rsnd_adg_probe,
1720                 rsnd_dai_probe,
1721         };
1722         int ret, i;
1723
1724         /*
1725          *      init priv data
1726          */
1727         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1728         if (!priv)
1729                 return -ENODEV;
1730
1731         priv->pdev      = pdev;
1732         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1733         spin_lock_init(&priv->lock);
1734
1735         /*
1736          *      init each module
1737          */
1738         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1739                 ret = probe_func[i](priv);
1740                 if (ret)
1741                         return ret;
1742         }
1743
1744         for_each_rsnd_dai(rdai, priv, i) {
1745                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1746                 if (ret)
1747                         goto exit_snd_probe;
1748
1749                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1750                 if (ret)
1751                         goto exit_snd_probe;
1752         }
1753
1754         dev_set_drvdata(dev, priv);
1755
1756         /*
1757          *      asoc register
1758          */
1759         ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1760                                          priv->daidrv, rsnd_rdai_nr(priv));
1761         if (ret < 0) {
1762                 dev_err(dev, "cannot snd dai register\n");
1763                 goto exit_snd_probe;
1764         }
1765
1766         pm_runtime_enable(dev);
1767
1768         dev_info(dev, "probed\n");
1769         return ret;
1770
1771 exit_snd_probe:
1772         for_each_rsnd_dai(rdai, priv, i) {
1773                 rsnd_dai_call(remove, &rdai->playback, priv);
1774                 rsnd_dai_call(remove, &rdai->capture, priv);
1775         }
1776
1777         /*
1778          * adg is very special mod which can't use rsnd_dai_call(remove),
1779          * and it registers ADG clock on probe.
1780          * It should be unregister if probe failed.
1781          * Mainly it is assuming -EPROBE_DEFER case
1782          */
1783         rsnd_adg_remove(priv);
1784
1785         return ret;
1786 }
1787
1788 static int rsnd_remove(struct platform_device *pdev)
1789 {
1790         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1791         struct rsnd_dai *rdai;
1792         void (*remove_func[])(struct rsnd_priv *priv) = {
1793                 rsnd_ssi_remove,
1794                 rsnd_ssiu_remove,
1795                 rsnd_src_remove,
1796                 rsnd_ctu_remove,
1797                 rsnd_mix_remove,
1798                 rsnd_dvc_remove,
1799                 rsnd_cmd_remove,
1800                 rsnd_adg_remove,
1801         };
1802         int ret = 0, i;
1803
1804         snd_soc_disconnect_sync(&pdev->dev);
1805
1806         pm_runtime_disable(&pdev->dev);
1807
1808         for_each_rsnd_dai(rdai, priv, i) {
1809                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1810                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1811         }
1812
1813         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1814                 remove_func[i](priv);
1815
1816         return ret;
1817 }
1818
1819 static int __maybe_unused rsnd_suspend(struct device *dev)
1820 {
1821         struct rsnd_priv *priv = dev_get_drvdata(dev);
1822
1823         rsnd_adg_clk_disable(priv);
1824
1825         return 0;
1826 }
1827
1828 static int __maybe_unused rsnd_resume(struct device *dev)
1829 {
1830         struct rsnd_priv *priv = dev_get_drvdata(dev);
1831
1832         rsnd_adg_clk_enable(priv);
1833
1834         return 0;
1835 }
1836
1837 static const struct dev_pm_ops rsnd_pm_ops = {
1838         SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1839 };
1840
1841 static struct platform_driver rsnd_driver = {
1842         .driver = {
1843                 .name   = "rcar_sound",
1844                 .pm     = &rsnd_pm_ops,
1845                 .of_match_table = rsnd_of_match,
1846         },
1847         .probe          = rsnd_probe,
1848         .remove         = rsnd_remove,
1849 };
1850 module_platform_driver(rsnd_driver);
1851
1852 MODULE_LICENSE("GPL v2");
1853 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1854 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1855 MODULE_ALIAS("platform:rcar-pcm-audio");