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         rdai->bit_clk_inv = 0;
 765         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 766         case SND_SOC_DAIFMT_I2S:
 767                 rdai->sys_delay = 0;
 768                 rdai->data_alignment = 0;
 769                 rdai->frm_clk_inv = 0;
 770                 break;
 771         case SND_SOC_DAIFMT_LEFT_J:
 772         case SND_SOC_DAIFMT_DSP_B:
 773                 rdai->sys_delay = 1;
 774                 rdai->data_alignment = 0;
 775                 rdai->frm_clk_inv = 1;
 776                 break;
 777         case SND_SOC_DAIFMT_RIGHT_J:
 778                 rdai->sys_delay = 1;
 779                 rdai->data_alignment = 1;
 780                 rdai->frm_clk_inv = 1;
 781                 break;
 782         case SND_SOC_DAIFMT_DSP_A:
 783                 rdai->sys_delay = 0;
 784                 rdai->data_alignment = 0;
 785                 rdai->frm_clk_inv = 1;
 786                 break;
 787         }
 788
 789         /* set clock inversion */
 790         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 791         case SND_SOC_DAIFMT_NB_IF:
 792                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 793                 break;
 794         case SND_SOC_DAIFMT_IB_NF:
 795                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 796                 break;
 797         case SND_SOC_DAIFMT_IB_IF:
 798                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 799                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 800                 break;
 801         case SND_SOC_DAIFMT_NB_NF:
 802         default:
 803                 break;
 804         }
 805
 806         return 0;
 807 }
 808
 809 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 810                                      u32 tx_mask, u32 rx_mask,
 811                                      int slots, int slot_width)
 812 {
 813         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 814         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 815         struct device *dev = rsnd_priv_to_dev(priv);
 816
 817         switch (slot_width) {
 818         case 16:
 819         case 24:
 820         case 32:
 821                 break;
 822         default:
 823                 /* use default */
 824                 slot_width = 32;
 825         }
 826
 827         switch (slots) {
 828         case 2:
 829                 /* TDM Split Mode */
 830         case 6:
 831         case 8:
 832                 /* TDM Extend Mode */
 833                 rsnd_rdai_channels_set(rdai, slots);
 834                 rsnd_rdai_ssi_lane_set(rdai, 1);
 835                 rsnd_rdai_width_set(rdai, slot_width);
 836                 break;
 837         default:
 838                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
 839                 return -EINVAL;
 840         }
 841
 842         return 0;
 843 }
 844
 845 static unsigned int rsnd_soc_hw_channels_list[] = {
 846         2, 6, 8,
 847 };
 848
 849 static unsigned int rsnd_soc_hw_rate_list[] = {
 850           8000,
 851          11025,
 852          16000,
 853          22050,
 854          32000,
 855          44100,
 856          48000,
 857          64000,
 858          88200,
 859          96000,
 860         176400,
 861         192000,
 862 };
 863
 864 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai,
 865                             unsigned int *list, int list_num,
 866                             struct snd_interval *baseline, struct snd_interval *iv)
 867 {
 868         struct snd_interval p;
 869         unsigned int rate;
 870         int i;
 871
 872         snd_interval_any(&p);
 873         p.min = UINT_MAX;
 874         p.max = 0;
 875
 876         for (i = 0; i < list_num; i++) {
 877
 878                 if (!snd_interval_test(iv, list[i]))
 879                         continue;
 880
 881                 rate = rsnd_ssi_clk_query(rdai,
 882                                           baseline->min, list[i], NULL);
 883                 if (rate > 0) {
 884                         p.min = min(p.min, list[i]);
 885                         p.max = max(p.max, list[i]);
 886                 }
 887
 888                 rate = rsnd_ssi_clk_query(rdai,
 889                                           baseline->max, list[i], NULL);
 890                 if (rate > 0) {
 891                         p.min = min(p.min, list[i]);
 892                         p.max = max(p.max, list[i]);
 893                 }
 894         }
 895
 896         return snd_interval_refine(iv, &p);
 897 }
 898
 899 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
 900                                  struct snd_pcm_hw_rule *rule)
 901 {
 902         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 903         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 904         struct snd_interval ic;
 905         struct rsnd_dai_stream *io = rule->private;
 906         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 907
 908         /*
 909          * possible sampling rate limitation is same as
 910          * 2ch if it supports multi ssi
 911          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 912          */
 913         ic = *ic_;
 914         ic.min =
 915         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 916
 917         return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list,
 918                                 ARRAY_SIZE(rsnd_soc_hw_rate_list),
 919                                 &ic, ir);
 920 }
 921
 922 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
 923                                      struct snd_pcm_hw_rule *rule)
 924 {
 925         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 926         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 927         struct snd_interval ic;
 928         struct rsnd_dai_stream *io = rule->private;
 929         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 930
 931         /*
 932          * possible sampling rate limitation is same as
 933          * 2ch if it supports multi ssi
 934          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 935          */
 936         ic = *ic_;
 937         ic.min =
 938         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 939
 940         return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list,
 941                                 ARRAY_SIZE(rsnd_soc_hw_channels_list),
 942                                 ir, &ic);
 943 }
 944
 945 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
 946         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 947                         SNDRV_PCM_INFO_MMAP             |
 948                         SNDRV_PCM_INFO_MMAP_VALID,
 949         .buffer_bytes_max       = 64 * 1024,
 950         .period_bytes_min       = 32,
 951         .period_bytes_max       = 8192,
 952         .periods_min            = 1,
 953         .periods_max            = 32,
 954         .fifo_size              = 256,
 955 };
 956
 957 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
 958                                 struct snd_soc_dai *dai)
 959 {
 960         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 961         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 962         struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
 963         struct snd_pcm_runtime *runtime = substream->runtime;
 964         unsigned int max_channels = rsnd_rdai_channels_get(rdai);
 965         int i;
 966
 967         rsnd_dai_stream_init(io, substream);
 968
 969         /*
 970          * Channel Limitation
 971          * It depends on Platform design
 972          */
 973         constraint->list        = rsnd_soc_hw_channels_list;
 974         constraint->count       = 0;
 975         constraint->mask        = 0;
 976
 977         for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
 978                 if (rsnd_soc_hw_channels_list[i] > max_channels)
 979                         break;
 980                 constraint->count = i + 1;
 981         }
 982
 983         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
 984
 985         snd_pcm_hw_constraint_list(runtime, 0,
 986                                    SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
 987
 988         snd_pcm_hw_constraint_integer(runtime,
 989                                       SNDRV_PCM_HW_PARAM_PERIODS);
 990
 991         /*
 992          * Sampling Rate / Channel Limitation
 993          * It depends on Clock Master Mode
 994          */
 995         if (rsnd_rdai_is_clk_master(rdai)) {
 996                 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 997
 998                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 999                                     rsnd_soc_hw_rule_rate,
1000                                     is_play ? &rdai->playback : &rdai->capture,
1001                                     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
1002                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1003                                     rsnd_soc_hw_rule_channels,
1004                                     is_play ? &rdai->playback : &rdai->capture,
1005                                     SNDRV_PCM_HW_PARAM_RATE, -1);
1006         }
1007
1008         return 0;
1009 }
1010
1011 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
1012                                   struct snd_soc_dai *dai)
1013 {
1014         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1015         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1016         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1017
1018         /*
1019          * call rsnd_dai_call without spinlock
1020          */
1021         rsnd_dai_call(cleanup, io, priv);
1022
1023         rsnd_dai_stream_quit(io);
1024 }
1025
1026 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
1027                                 struct snd_soc_dai *dai)
1028 {
1029         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
1030         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1031         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1032
1033         return rsnd_dai_call(prepare, io, priv);
1034 }
1035
1036 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
1037         .startup        = rsnd_soc_dai_startup,
1038         .shutdown       = rsnd_soc_dai_shutdown,
1039         .trigger        = rsnd_soc_dai_trigger,
1040         .set_fmt        = rsnd_soc_dai_set_fmt,
1041         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
1042         .prepare        = rsnd_soc_dai_prepare,
1043 };
1044
1045 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv,
1046                                       struct rsnd_dai_stream *io,
1047                                       struct device_node *dai_np)
1048 {
1049         struct device *dev = rsnd_priv_to_dev(priv);
1050         struct device_node *ssiu_np = rsnd_ssiu_of_node(priv);
1051         struct device_node *np;
1052         int is_play = rsnd_io_is_play(io);
1053         int i, j;
1054
1055         if (!ssiu_np)
1056                 return;
1057
1058         /*
1059          * This driver assumes that it is TDM Split mode
1060          * if it includes ssiu node
1061          */
1062         for (i = 0;; i++) {
1063                 struct device_node *node = is_play ?
1064                         of_parse_phandle(dai_np, "playback", i) :
1065                         of_parse_phandle(dai_np, "capture",  i);
1066
1067                 if (!node)
1068                         break;
1069
1070                 j = 0;
1071                 for_each_child_of_node(ssiu_np, np) {
1072                         if (np == node) {
1073                                 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT);
1074                                 dev_dbg(dev, "%s is part of TDM Split\n", io->name);
1075                         }
1076                         j++;
1077                 }
1078
1079         }
1080 }
1081
1082 static void rsnd_parse_connect_simple(struct rsnd_priv *priv,
1083                                       struct rsnd_dai_stream *io,
1084                                       struct device_node *dai_np)
1085 {
1086         if (!rsnd_io_to_mod_ssi(io))
1087                 return;
1088
1089         rsnd_parse_tdm_split_mode(priv, io, dai_np);
1090 }
1091
1092 static void rsnd_parse_connect_graph(struct rsnd_priv *priv,
1093                                      struct rsnd_dai_stream *io,
1094                                      struct device_node *endpoint)
1095 {
1096         struct device *dev = rsnd_priv_to_dev(priv);
1097         struct device_node *remote_node = of_graph_get_remote_port_parent(endpoint);
1098
1099         if (!rsnd_io_to_mod_ssi(io))
1100                 return;
1101
1102         /* HDMI0 */
1103         if (strstr(remote_node->full_name, "hdmi@fead0000")) {
1104                 rsnd_flags_set(io, RSND_STREAM_HDMI0);
1105                 dev_dbg(dev, "%s connected to HDMI0\n", io->name);
1106         }
1107
1108         /* HDMI1 */
1109         if (strstr(remote_node->full_name, "hdmi@feae0000")) {
1110                 rsnd_flags_set(io, RSND_STREAM_HDMI1);
1111                 dev_dbg(dev, "%s connected to HDMI1\n", io->name);
1112         }
1113
1114         rsnd_parse_tdm_split_mode(priv, io, endpoint);
1115 }
1116
1117 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
1118                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
1119                 struct device_node *node,
1120                 struct device_node *playback,
1121                 struct device_node *capture)
1122 {
1123         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1124         struct device_node *np;
1125         struct rsnd_mod *mod;
1126         int i;
1127
1128         if (!node)
1129                 return;
1130
1131         i = 0;
1132         for_each_child_of_node(node, np) {
1133                 mod = mod_get(priv, i);
1134                 if (np == playback)
1135                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
1136                 if (np == capture)
1137                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
1138                 i++;
1139         }
1140
1141         of_node_put(node);
1142 }
1143
1144 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1145                                             int *is_graph)
1146 {
1147         struct device *dev = rsnd_priv_to_dev(priv);
1148         struct device_node *np = dev->of_node;
1149         struct device_node *dai_node;
1150         struct device_node *ret;
1151
1152         *is_graph = 0;
1153
1154         /*
1155          * parse both previous dai (= rcar_sound,dai), and
1156          * graph dai (= ports/port)
1157          */
1158         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1159         if (dai_node) {
1160                 ret = dai_node;
1161                 goto of_node_compatible;
1162         }
1163
1164         ret = np;
1165
1166         dai_node = of_graph_get_next_endpoint(np, NULL);
1167         if (dai_node)
1168                 goto of_node_graph;
1169
1170         return NULL;
1171
1172 of_node_graph:
1173         *is_graph = 1;
1174 of_node_compatible:
1175         of_node_put(dai_node);
1176
1177         return ret;
1178 }
1179
1180
1181 #define PREALLOC_BUFFER         (32 * 1024)
1182 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1183
1184 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1185                                   struct rsnd_dai_stream *io,
1186                                   int stream)
1187 {
1188         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1189         struct device *dev = rsnd_priv_to_dev(priv);
1190         struct snd_pcm_substream *substream;
1191
1192         /*
1193          * use Audio-DMAC dev if we can use IPMMU
1194          * see
1195          *      rsnd_dmaen_attach()
1196          */
1197         if (io->dmac_dev)
1198                 dev = io->dmac_dev;
1199
1200         for (substream = rtd->pcm->streams[stream].substream;
1201              substream;
1202              substream = substream->next) {
1203                 snd_pcm_lib_preallocate_pages(substream,
1204                                               SNDRV_DMA_TYPE_DEV,
1205                                               dev,
1206                                               PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1207         }
1208
1209         return 0;
1210 }
1211
1212 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd,
1213                         struct snd_soc_dai *dai)
1214 {
1215         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1216         int ret;
1217
1218         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1219         if (ret)
1220                 return ret;
1221
1222         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1223         if (ret)
1224                 return ret;
1225
1226         ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1227                                      SNDRV_PCM_STREAM_PLAYBACK);
1228         if (ret)
1229                 return ret;
1230
1231         ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1232                                      SNDRV_PCM_STREAM_CAPTURE);
1233         if (ret)
1234                 return ret;
1235
1236         return 0;
1237 }
1238
1239 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1240                              struct device_node *dai_np,
1241                              int dai_i)
1242 {
1243         struct device_node *playback, *capture;
1244         struct rsnd_dai_stream *io_playback;
1245         struct rsnd_dai_stream *io_capture;
1246         struct snd_soc_dai_driver *drv;
1247         struct rsnd_dai *rdai;
1248         struct device *dev = rsnd_priv_to_dev(priv);
1249         int io_i;
1250
1251         rdai            = rsnd_rdai_get(priv, dai_i);
1252         drv             = rsnd_daidrv_get(priv, dai_i);
1253         io_playback     = &rdai->playback;
1254         io_capture      = &rdai->capture;
1255
1256         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1257
1258         rdai->priv      = priv;
1259         drv->name       = rdai->name;
1260         drv->ops        = &rsnd_soc_dai_ops;
1261         drv->pcm_new    = rsnd_pcm_new;
1262
1263         snprintf(io_playback->name, RSND_DAI_NAME_SIZE,
1264                  "DAI%d Playback", dai_i);
1265         drv->playback.rates             = RSND_RATES;
1266         drv->playback.formats           = RSND_FMTS;
1267         drv->playback.channels_min      = 2;
1268         drv->playback.channels_max      = 8;
1269         drv->playback.stream_name       = io_playback->name;
1270
1271         snprintf(io_capture->name, RSND_DAI_NAME_SIZE,
1272                  "DAI%d Capture", dai_i);
1273         drv->capture.rates              = RSND_RATES;
1274         drv->capture.formats            = RSND_FMTS;
1275         drv->capture.channels_min       = 2;
1276         drv->capture.channels_max       = 8;
1277         drv->capture.stream_name        = io_capture->name;
1278
1279         io_playback->rdai               = rdai;
1280         io_capture->rdai                = rdai;
1281         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1282         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1283         rsnd_rdai_width_set(rdai, 32);   /* default 32bit width */
1284
1285         for (io_i = 0;; io_i++) {
1286                 playback = of_parse_phandle(dai_np, "playback", io_i);
1287                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1288
1289                 if (!playback && !capture)
1290                         break;
1291
1292                 rsnd_parse_connect_ssi(rdai, playback, capture);
1293                 rsnd_parse_connect_ssiu(rdai, playback, capture);
1294                 rsnd_parse_connect_src(rdai, playback, capture);
1295                 rsnd_parse_connect_ctu(rdai, playback, capture);
1296                 rsnd_parse_connect_mix(rdai, playback, capture);
1297                 rsnd_parse_connect_dvc(rdai, playback, capture);
1298
1299                 of_node_put(playback);
1300                 of_node_put(capture);
1301         }
1302
1303         if (rsnd_ssi_is_pin_sharing(io_capture) ||
1304             rsnd_ssi_is_pin_sharing(io_playback)) {
1305                 /* should have symmetric_rates if pin sharing */
1306                 drv->symmetric_rates = 1;
1307         }
1308
1309         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1310                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1311                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1312 }
1313
1314 static int rsnd_dai_probe(struct rsnd_priv *priv)
1315 {
1316         struct device_node *dai_node;
1317         struct device_node *dai_np;
1318         struct snd_soc_dai_driver *rdrv;
1319         struct device *dev = rsnd_priv_to_dev(priv);
1320         struct rsnd_dai *rdai;
1321         int nr;
1322         int is_graph;
1323         int dai_i;
1324
1325         dai_node = rsnd_dai_of_node(priv, &is_graph);
1326         if (is_graph)
1327                 nr = of_graph_get_endpoint_count(dai_node);
1328         else
1329                 nr = of_get_child_count(dai_node);
1330
1331         if (!nr)
1332                 return -EINVAL;
1333
1334         rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1335         rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1336         if (!rdrv || !rdai)
1337                 return -ENOMEM;
1338
1339         priv->rdai_nr   = nr;
1340         priv->daidrv    = rdrv;
1341         priv->rdai      = rdai;
1342
1343         /*
1344          * parse all dai
1345          */
1346         dai_i = 0;
1347         if (is_graph) {
1348                 for_each_endpoint_of_node(dai_node, dai_np) {
1349                         __rsnd_dai_probe(priv, dai_np, dai_i);
1350                         if (rsnd_is_gen3(priv)) {
1351                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1352
1353                                 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np);
1354                                 rsnd_parse_connect_graph(priv, &rdai->capture,  dai_np);
1355                         }
1356                         dai_i++;
1357                 }
1358         } else {
1359                 for_each_child_of_node(dai_node, dai_np) {
1360                         __rsnd_dai_probe(priv, dai_np, dai_i);
1361                         if (rsnd_is_gen3(priv)) {
1362                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1363
1364                                 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np);
1365                                 rsnd_parse_connect_simple(priv, &rdai->capture,  dai_np);
1366                         }
1367                         dai_i++;
1368                 }
1369         }
1370
1371         return 0;
1372 }
1373
1374 /*
1375  *              pcm ops
1376  */
1377 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1378                          struct snd_pcm_hw_params *hw_params)
1379 {
1380         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1381         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1382         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1383         struct snd_soc_pcm_runtime *fe = substream->private_data;
1384         int ret;
1385
1386         /*
1387          * rsnd assumes that it might be used under DPCM if user want to use
1388          * channel / rate convert. Then, rsnd should be FE.
1389          * And then, this function will be called *after* BE settings.
1390          * this means, each BE already has fixuped hw_params.
1391          * see
1392          *      dpcm_fe_dai_hw_params()
1393          *      dpcm_be_dai_hw_params()
1394          */
1395         io->converted_rate = 0;
1396         io->converted_chan = 0;
1397         if (fe->dai_link->dynamic) {
1398                 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1399                 struct device *dev = rsnd_priv_to_dev(priv);
1400                 struct snd_soc_dpcm *dpcm;
1401                 struct snd_pcm_hw_params *be_params;
1402                 int stream = substream->stream;
1403
1404                 for_each_dpcm_be(fe, stream, dpcm) {
1405                         be_params = &dpcm->hw_params;
1406                         if (params_channels(hw_params) != params_channels(be_params))
1407                                 io->converted_chan = params_channels(be_params);
1408                         if (params_rate(hw_params) != params_rate(be_params))
1409                                 io->converted_rate = params_rate(be_params);
1410                 }
1411                 if (io->converted_chan)
1412                         dev_dbg(dev, "convert channels = %d\n", io->converted_chan);
1413                 if (io->converted_rate)
1414                         dev_dbg(dev, "convert rate     = %d\n", io->converted_rate);
1415         }
1416
1417         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1418         if (ret)
1419                 return ret;
1420
1421         return snd_pcm_lib_malloc_pages(substream,
1422                                         params_buffer_bytes(hw_params));
1423 }
1424
1425 static int rsnd_hw_free(struct snd_pcm_substream *substream)
1426 {
1427         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1428         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1429         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1430         int ret;
1431
1432         ret = rsnd_dai_call(hw_free, io, substream);
1433         if (ret)
1434                 return ret;
1435
1436         return snd_pcm_lib_free_pages(substream);
1437 }
1438
1439 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1440 {
1441         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1442         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1443         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1444         snd_pcm_uframes_t pointer = 0;
1445
1446         rsnd_dai_call(pointer, io, &pointer);
1447
1448         return pointer;
1449 }
1450
1451 static const struct snd_pcm_ops rsnd_pcm_ops = {
1452         .ioctl          = snd_pcm_lib_ioctl,
1453         .hw_params      = rsnd_hw_params,
1454         .hw_free        = rsnd_hw_free,
1455         .pointer        = rsnd_pointer,
1456 };
1457
1458 /*
1459  *              snd_kcontrol
1460  */
1461 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1462                            struct snd_ctl_elem_info *uinfo)
1463 {
1464         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1465
1466         if (cfg->texts) {
1467                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1468                 uinfo->count = cfg->size;
1469                 uinfo->value.enumerated.items = cfg->max;
1470                 if (uinfo->value.enumerated.item >= cfg->max)
1471                         uinfo->value.enumerated.item = cfg->max - 1;
1472                 strlcpy(uinfo->value.enumerated.name,
1473                         cfg->texts[uinfo->value.enumerated.item],
1474                         sizeof(uinfo->value.enumerated.name));
1475         } else {
1476                 uinfo->count = cfg->size;
1477                 uinfo->value.integer.min = 0;
1478                 uinfo->value.integer.max = cfg->max;
1479                 uinfo->type = (cfg->max == 1) ?
1480                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1481                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1482         }
1483
1484         return 0;
1485 }
1486
1487 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1488                           struct snd_ctl_elem_value *uc)
1489 {
1490         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1491         int i;
1492
1493         for (i = 0; i < cfg->size; i++)
1494                 if (cfg->texts)
1495                         uc->value.enumerated.item[i] = cfg->val[i];
1496                 else
1497                         uc->value.integer.value[i] = cfg->val[i];
1498
1499         return 0;
1500 }
1501
1502 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1503                           struct snd_ctl_elem_value *uc)
1504 {
1505         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1506         int i, change = 0;
1507
1508         if (!cfg->accept(cfg->io))
1509                 return 0;
1510
1511         for (i = 0; i < cfg->size; i++) {
1512                 if (cfg->texts) {
1513                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1514                         cfg->val[i] = uc->value.enumerated.item[i];
1515                 } else {
1516                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1517                         cfg->val[i] = uc->value.integer.value[i];
1518                 }
1519         }
1520
1521         if (change && cfg->update)
1522                 cfg->update(cfg->io, cfg->mod);
1523
1524         return change;
1525 }
1526
1527 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1528 {
1529         return 1;
1530 }
1531
1532 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1533 {
1534         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1535         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1536         struct device *dev = rsnd_priv_to_dev(priv);
1537
1538         if (!runtime) {
1539                 dev_warn(dev, "Can't update kctrl when idle\n");
1540                 return 0;
1541         }
1542
1543         return 1;
1544 }
1545
1546 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1547 {
1548         cfg->cfg.val = cfg->val;
1549
1550         return &cfg->cfg;
1551 }
1552
1553 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1554 {
1555         cfg->cfg.val = &cfg->val;
1556
1557         return &cfg->cfg;
1558 }
1559
1560 const char * const volume_ramp_rate[] = {
1561         "128 dB/1 step",         /* 00000 */
1562         "64 dB/1 step",          /* 00001 */
1563         "32 dB/1 step",          /* 00010 */
1564         "16 dB/1 step",          /* 00011 */
1565         "8 dB/1 step",           /* 00100 */
1566         "4 dB/1 step",           /* 00101 */
1567         "2 dB/1 step",           /* 00110 */
1568         "1 dB/1 step",           /* 00111 */
1569         "0.5 dB/1 step",         /* 01000 */
1570         "0.25 dB/1 step",        /* 01001 */
1571         "0.125 dB/1 step",       /* 01010 = VOLUME_RAMP_MAX_MIX */
1572         "0.125 dB/2 steps",      /* 01011 */
1573         "0.125 dB/4 steps",      /* 01100 */
1574         "0.125 dB/8 steps",      /* 01101 */
1575         "0.125 dB/16 steps",     /* 01110 */
1576         "0.125 dB/32 steps",     /* 01111 */
1577         "0.125 dB/64 steps",     /* 10000 */
1578         "0.125 dB/128 steps",    /* 10001 */
1579         "0.125 dB/256 steps",    /* 10010 */
1580         "0.125 dB/512 steps",    /* 10011 */
1581         "0.125 dB/1024 steps",   /* 10100 */
1582         "0.125 dB/2048 steps",   /* 10101 */
1583         "0.125 dB/4096 steps",   /* 10110 */
1584         "0.125 dB/8192 steps",   /* 10111 = VOLUME_RAMP_MAX_DVC */
1585 };
1586
1587 int rsnd_kctrl_new(struct rsnd_mod *mod,
1588                    struct rsnd_dai_stream *io,
1589                    struct snd_soc_pcm_runtime *rtd,
1590                    const unsigned char *name,
1591                    int (*accept)(struct rsnd_dai_stream *io),
1592                    void (*update)(struct rsnd_dai_stream *io,
1593                                   struct rsnd_mod *mod),
1594                    struct rsnd_kctrl_cfg *cfg,
1595                    const char * const *texts,
1596                    int size,
1597                    u32 max)
1598 {
1599         struct snd_card *card = rtd->card->snd_card;
1600         struct snd_kcontrol *kctrl;
1601         struct snd_kcontrol_new knew = {
1602                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1603                 .name           = name,
1604                 .info           = rsnd_kctrl_info,
1605                 .index          = rtd->num,
1606                 .get            = rsnd_kctrl_get,
1607                 .put            = rsnd_kctrl_put,
1608         };
1609         int ret;
1610
1611         /*
1612          * 1) Avoid duplicate register for DVC with MIX case
1613          * 2) Allow duplicate register for MIX
1614          * 3) re-register if card was rebinded
1615          */
1616         list_for_each_entry(kctrl, &card->controls, list) {
1617                 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1618
1619                 if (c == cfg)
1620                         return 0;
1621         }
1622
1623         if (size > RSND_MAX_CHANNELS)
1624                 return -EINVAL;
1625
1626         kctrl = snd_ctl_new1(&knew, cfg);
1627         if (!kctrl)
1628                 return -ENOMEM;
1629
1630         ret = snd_ctl_add(card, kctrl);
1631         if (ret < 0)
1632                 return ret;
1633
1634         cfg->texts      = texts;
1635         cfg->max        = max;
1636         cfg->size       = size;
1637         cfg->accept     = accept;
1638         cfg->update     = update;
1639         cfg->card       = card;
1640         cfg->kctrl      = kctrl;
1641         cfg->io         = io;
1642         cfg->mod        = mod;
1643
1644         return 0;
1645 }
1646
1647 /*
1648  *              snd_soc_component
1649  */
1650 static const struct snd_soc_component_driver rsnd_soc_component = {
1651         .ops            = &rsnd_pcm_ops,
1652         .name           = "rsnd",
1653 };
1654
1655 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1656                                        struct rsnd_dai_stream *io)
1657 {
1658         int ret;
1659
1660         ret = rsnd_dai_call(probe, io, priv);
1661         if (ret == -EAGAIN) {
1662                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1663                 struct rsnd_mod *mod;
1664                 int i;
1665
1666                 /*
1667                  * Fallback to PIO mode
1668                  */
1669
1670                 /*
1671                  * call "remove" for SSI/SRC/DVC
1672                  * SSI will be switch to PIO mode if it was DMA mode
1673                  * see
1674                  *      rsnd_dma_init()
1675                  *      rsnd_ssi_fallback()
1676                  */
1677                 rsnd_dai_call(remove, io, priv);
1678
1679                 /*
1680                  * remove all mod from io
1681                  * and, re connect ssi
1682                  */
1683                 for_each_rsnd_mod(i, mod, io)
1684                         rsnd_dai_disconnect(mod, io, i);
1685                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1686
1687                 /*
1688                  * fallback
1689                  */
1690                 rsnd_dai_call(fallback, io, priv);
1691
1692                 /*
1693                  * retry to "probe".
1694                  * DAI has SSI which is PIO mode only now.
1695                  */
1696                 ret = rsnd_dai_call(probe, io, priv);
1697         }
1698
1699         return ret;
1700 }
1701
1702 /*
1703  *      rsnd probe
1704  */
1705 static int rsnd_probe(struct platform_device *pdev)
1706 {
1707         struct rsnd_priv *priv;
1708         struct device *dev = &pdev->dev;
1709         struct rsnd_dai *rdai;
1710         int (*probe_func[])(struct rsnd_priv *priv) = {
1711                 rsnd_gen_probe,
1712                 rsnd_dma_probe,
1713                 rsnd_ssi_probe,
1714                 rsnd_ssiu_probe,
1715                 rsnd_src_probe,
1716                 rsnd_ctu_probe,
1717                 rsnd_mix_probe,
1718                 rsnd_dvc_probe,
1719                 rsnd_cmd_probe,
1720                 rsnd_adg_probe,
1721                 rsnd_dai_probe,
1722         };
1723         int ret, i;
1724
1725         /*
1726          *      init priv data
1727          */
1728         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1729         if (!priv)
1730                 return -ENODEV;
1731
1732         priv->pdev      = pdev;
1733         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1734         spin_lock_init(&priv->lock);
1735
1736         /*
1737          *      init each module
1738          */
1739         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1740                 ret = probe_func[i](priv);
1741                 if (ret)
1742                         return ret;
1743         }
1744
1745         for_each_rsnd_dai(rdai, priv, i) {
1746                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1747                 if (ret)
1748                         goto exit_snd_probe;
1749
1750                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1751                 if (ret)
1752                         goto exit_snd_probe;
1753         }
1754
1755         dev_set_drvdata(dev, priv);
1756
1757         /*
1758          *      asoc register
1759          */
1760         ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1761                                          priv->daidrv, rsnd_rdai_nr(priv));
1762         if (ret < 0) {
1763                 dev_err(dev, "cannot snd dai register\n");
1764                 goto exit_snd_probe;
1765         }
1766
1767         pm_runtime_enable(dev);
1768
1769         dev_info(dev, "probed\n");
1770         return ret;
1771
1772 exit_snd_probe:
1773         for_each_rsnd_dai(rdai, priv, i) {
1774                 rsnd_dai_call(remove, &rdai->playback, priv);
1775                 rsnd_dai_call(remove, &rdai->capture, priv);
1776         }
1777
1778         /*
1779          * adg is very special mod which can't use rsnd_dai_call(remove),
1780          * and it registers ADG clock on probe.
1781          * It should be unregister if probe failed.
1782          * Mainly it is assuming -EPROBE_DEFER case
1783          */
1784         rsnd_adg_remove(priv);
1785
1786         return ret;
1787 }
1788
1789 static int rsnd_remove(struct platform_device *pdev)
1790 {
1791         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1792         struct rsnd_dai *rdai;
1793         void (*remove_func[])(struct rsnd_priv *priv) = {
1794                 rsnd_ssi_remove,
1795                 rsnd_ssiu_remove,
1796                 rsnd_src_remove,
1797                 rsnd_ctu_remove,
1798                 rsnd_mix_remove,
1799                 rsnd_dvc_remove,
1800                 rsnd_cmd_remove,
1801                 rsnd_adg_remove,
1802         };
1803         int ret = 0, i;
1804
1805         snd_soc_disconnect_sync(&pdev->dev);
1806
1807         pm_runtime_disable(&pdev->dev);
1808
1809         for_each_rsnd_dai(rdai, priv, i) {
1810                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1811                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1812         }
1813
1814         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1815                 remove_func[i](priv);
1816
1817         return ret;
1818 }
1819
1820 static int __maybe_unused rsnd_suspend(struct device *dev)
1821 {
1822         struct rsnd_priv *priv = dev_get_drvdata(dev);
1823
1824         rsnd_adg_clk_disable(priv);
1825
1826         return 0;
1827 }
1828
1829 static int __maybe_unused rsnd_resume(struct device *dev)
1830 {
1831         struct rsnd_priv *priv = dev_get_drvdata(dev);
1832
1833         rsnd_adg_clk_enable(priv);
1834
1835         return 0;
1836 }
1837
1838 static const struct dev_pm_ops rsnd_pm_ops = {
1839         SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1840 };
1841
1842 static struct platform_driver rsnd_driver = {
1843         .driver = {
1844                 .name   = "rcar_sound",
1845                 .pm     = &rsnd_pm_ops,
1846                 .of_match_table = rsnd_of_match,
1847         },
1848         .probe          = rsnd_probe,
1849         .remove         = rsnd_remove,
1850 };
1851 module_platform_driver(rsnd_driver);
1852
1853 MODULE_LICENSE("GPL v2");
1854 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1855 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1856 MODULE_ALIAS("platform:rcar-pcm-audio");