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 (WARN_ON((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                 of_node_put(node);
1080         }
1081
1082         of_node_put(ssiu_np);
1083 }
1084
1085 static void rsnd_parse_connect_simple(struct rsnd_priv *priv,
1086                                       struct rsnd_dai_stream *io,
1087                                       struct device_node *dai_np)
1088 {
1089         if (!rsnd_io_to_mod_ssi(io))
1090                 return;
1091
1092         rsnd_parse_tdm_split_mode(priv, io, dai_np);
1093 }
1094
1095 static void rsnd_parse_connect_graph(struct rsnd_priv *priv,
1096                                      struct rsnd_dai_stream *io,
1097                                      struct device_node *endpoint)
1098 {
1099         struct device *dev = rsnd_priv_to_dev(priv);
1100         struct device_node *remote_node;
1101
1102         if (!rsnd_io_to_mod_ssi(io))
1103                 return;
1104
1105         remote_node = of_graph_get_remote_port_parent(endpoint);
1106
1107         /* HDMI0 */
1108         if (strstr(remote_node->full_name, "hdmi@fead0000")) {
1109                 rsnd_flags_set(io, RSND_STREAM_HDMI0);
1110                 dev_dbg(dev, "%s connected to HDMI0\n", io->name);
1111         }
1112
1113         /* HDMI1 */
1114         if (strstr(remote_node->full_name, "hdmi@feae0000")) {
1115                 rsnd_flags_set(io, RSND_STREAM_HDMI1);
1116                 dev_dbg(dev, "%s connected to HDMI1\n", io->name);
1117         }
1118
1119         rsnd_parse_tdm_split_mode(priv, io, endpoint);
1120
1121         of_node_put(remote_node);
1122 }
1123
1124 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
1125                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
1126                 struct device_node *node,
1127                 struct device_node *playback,
1128                 struct device_node *capture)
1129 {
1130         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1131         struct device_node *np;
1132         struct rsnd_mod *mod;
1133         int i;
1134
1135         if (!node)
1136                 return;
1137
1138         i = 0;
1139         for_each_child_of_node(node, np) {
1140                 mod = mod_get(priv, i);
1141                 if (np == playback)
1142                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
1143                 if (np == capture)
1144                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
1145                 i++;
1146         }
1147
1148         of_node_put(node);
1149 }
1150
1151 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1152                                             int *is_graph)
1153 {
1154         struct device *dev = rsnd_priv_to_dev(priv);
1155         struct device_node *np = dev->of_node;
1156         struct device_node *dai_node;
1157         struct device_node *ret;
1158
1159         *is_graph = 0;
1160
1161         /*
1162          * parse both previous dai (= rcar_sound,dai), and
1163          * graph dai (= ports/port)
1164          */
1165         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1166         if (dai_node) {
1167                 ret = dai_node;
1168                 goto of_node_compatible;
1169         }
1170
1171         ret = np;
1172
1173         dai_node = of_graph_get_next_endpoint(np, NULL);
1174         if (dai_node)
1175                 goto of_node_graph;
1176
1177         return NULL;
1178
1179 of_node_graph:
1180         *is_graph = 1;
1181 of_node_compatible:
1182         of_node_put(dai_node);
1183
1184         return ret;
1185 }
1186
1187
1188 #define PREALLOC_BUFFER         (32 * 1024)
1189 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1190
1191 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1192                                   struct rsnd_dai_stream *io,
1193                                   int stream)
1194 {
1195         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1196         struct device *dev = rsnd_priv_to_dev(priv);
1197         struct snd_pcm_substream *substream;
1198
1199         /*
1200          * use Audio-DMAC dev if we can use IPMMU
1201          * see
1202          *      rsnd_dmaen_attach()
1203          */
1204         if (io->dmac_dev)
1205                 dev = io->dmac_dev;
1206
1207         for (substream = rtd->pcm->streams[stream].substream;
1208              substream;
1209              substream = substream->next) {
1210                 snd_pcm_lib_preallocate_pages(substream,
1211                                               SNDRV_DMA_TYPE_DEV,
1212                                               dev,
1213                                               PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1214         }
1215
1216         return 0;
1217 }
1218
1219 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd,
1220                         struct snd_soc_dai *dai)
1221 {
1222         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1223         int ret;
1224
1225         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1226         if (ret)
1227                 return ret;
1228
1229         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1230         if (ret)
1231                 return ret;
1232
1233         ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1234                                      SNDRV_PCM_STREAM_PLAYBACK);
1235         if (ret)
1236                 return ret;
1237
1238         ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1239                                      SNDRV_PCM_STREAM_CAPTURE);
1240         if (ret)
1241                 return ret;
1242
1243         return 0;
1244 }
1245
1246 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1247                              struct device_node *dai_np,
1248                              int dai_i)
1249 {
1250         struct device_node *playback, *capture;
1251         struct rsnd_dai_stream *io_playback;
1252         struct rsnd_dai_stream *io_capture;
1253         struct snd_soc_dai_driver *drv;
1254         struct rsnd_dai *rdai;
1255         struct device *dev = rsnd_priv_to_dev(priv);
1256         int io_i;
1257
1258         rdai            = rsnd_rdai_get(priv, dai_i);
1259         drv             = rsnd_daidrv_get(priv, dai_i);
1260         io_playback     = &rdai->playback;
1261         io_capture      = &rdai->capture;
1262
1263         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1264
1265         rdai->priv      = priv;
1266         drv->name       = rdai->name;
1267         drv->ops        = &rsnd_soc_dai_ops;
1268         drv->pcm_new    = rsnd_pcm_new;
1269
1270         snprintf(io_playback->name, RSND_DAI_NAME_SIZE,
1271                  "DAI%d Playback", dai_i);
1272         drv->playback.rates             = RSND_RATES;
1273         drv->playback.formats           = RSND_FMTS;
1274         drv->playback.channels_min      = 2;
1275         drv->playback.channels_max      = 8;
1276         drv->playback.stream_name       = io_playback->name;
1277
1278         snprintf(io_capture->name, RSND_DAI_NAME_SIZE,
1279                  "DAI%d Capture", dai_i);
1280         drv->capture.rates              = RSND_RATES;
1281         drv->capture.formats            = RSND_FMTS;
1282         drv->capture.channels_min       = 2;
1283         drv->capture.channels_max       = 8;
1284         drv->capture.stream_name        = io_capture->name;
1285
1286         io_playback->rdai               = rdai;
1287         io_capture->rdai                = rdai;
1288         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1289         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1290         rsnd_rdai_width_set(rdai, 32);   /* default 32bit width */
1291
1292         for (io_i = 0;; io_i++) {
1293                 playback = of_parse_phandle(dai_np, "playback", io_i);
1294                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1295
1296                 if (!playback && !capture)
1297                         break;
1298
1299                 rsnd_parse_connect_ssi(rdai, playback, capture);
1300                 rsnd_parse_connect_ssiu(rdai, playback, capture);
1301                 rsnd_parse_connect_src(rdai, playback, capture);
1302                 rsnd_parse_connect_ctu(rdai, playback, capture);
1303                 rsnd_parse_connect_mix(rdai, playback, capture);
1304                 rsnd_parse_connect_dvc(rdai, playback, capture);
1305
1306                 of_node_put(playback);
1307                 of_node_put(capture);
1308         }
1309
1310         if (rsnd_ssi_is_pin_sharing(io_capture) ||
1311             rsnd_ssi_is_pin_sharing(io_playback)) {
1312                 /* should have symmetric_rates if pin sharing */
1313                 drv->symmetric_rates = 1;
1314         }
1315
1316         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1317                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1318                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1319 }
1320
1321 static int rsnd_dai_probe(struct rsnd_priv *priv)
1322 {
1323         struct device_node *dai_node;
1324         struct device_node *dai_np;
1325         struct snd_soc_dai_driver *rdrv;
1326         struct device *dev = rsnd_priv_to_dev(priv);
1327         struct rsnd_dai *rdai;
1328         int nr;
1329         int is_graph;
1330         int dai_i;
1331
1332         dai_node = rsnd_dai_of_node(priv, &is_graph);
1333         if (is_graph)
1334                 nr = of_graph_get_endpoint_count(dai_node);
1335         else
1336                 nr = of_get_child_count(dai_node);
1337
1338         if (!nr)
1339                 return -EINVAL;
1340
1341         rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1342         rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1343         if (!rdrv || !rdai)
1344                 return -ENOMEM;
1345
1346         priv->rdai_nr   = nr;
1347         priv->daidrv    = rdrv;
1348         priv->rdai      = rdai;
1349
1350         /*
1351          * parse all dai
1352          */
1353         dai_i = 0;
1354         if (is_graph) {
1355                 for_each_endpoint_of_node(dai_node, dai_np) {
1356                         __rsnd_dai_probe(priv, dai_np, dai_i);
1357                         if (rsnd_is_gen3(priv)) {
1358                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1359
1360                                 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np);
1361                                 rsnd_parse_connect_graph(priv, &rdai->capture,  dai_np);
1362                         }
1363                         dai_i++;
1364                 }
1365         } else {
1366                 for_each_child_of_node(dai_node, dai_np) {
1367                         __rsnd_dai_probe(priv, dai_np, dai_i);
1368                         if (rsnd_is_gen3(priv)) {
1369                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1370
1371                                 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np);
1372                                 rsnd_parse_connect_simple(priv, &rdai->capture,  dai_np);
1373                         }
1374                         dai_i++;
1375                 }
1376         }
1377
1378         return 0;
1379 }
1380
1381 /*
1382  *              pcm ops
1383  */
1384 static int rsnd_hw_params(struct snd_soc_component *component,
1385                           struct snd_pcm_substream *substream,
1386                           struct snd_pcm_hw_params *hw_params)
1387 {
1388         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1389         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1390         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1391         struct snd_soc_pcm_runtime *fe = substream->private_data;
1392         int ret;
1393
1394         /*
1395          * rsnd assumes that it might be used under DPCM if user want to use
1396          * channel / rate convert. Then, rsnd should be FE.
1397          * And then, this function will be called *after* BE settings.
1398          * this means, each BE already has fixuped hw_params.
1399          * see
1400          *      dpcm_fe_dai_hw_params()
1401          *      dpcm_be_dai_hw_params()
1402          */
1403         io->converted_rate = 0;
1404         io->converted_chan = 0;
1405         if (fe->dai_link->dynamic) {
1406                 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1407                 struct device *dev = rsnd_priv_to_dev(priv);
1408                 struct snd_soc_dpcm *dpcm;
1409                 struct snd_pcm_hw_params *be_params;
1410                 int stream = substream->stream;
1411
1412                 for_each_dpcm_be(fe, stream, dpcm) {
1413                         be_params = &dpcm->hw_params;
1414                         if (params_channels(hw_params) != params_channels(be_params))
1415                                 io->converted_chan = params_channels(be_params);
1416                         if (params_rate(hw_params) != params_rate(be_params))
1417                                 io->converted_rate = params_rate(be_params);
1418                 }
1419                 if (io->converted_chan)
1420                         dev_dbg(dev, "convert channels = %d\n", io->converted_chan);
1421                 if (io->converted_rate)
1422                         dev_dbg(dev, "convert rate     = %d\n", io->converted_rate);
1423         }
1424
1425         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1426         if (ret)
1427                 return ret;
1428
1429         return snd_pcm_lib_malloc_pages(substream,
1430                                         params_buffer_bytes(hw_params));
1431 }
1432
1433 static int rsnd_hw_free(struct snd_soc_component *component,
1434                         struct snd_pcm_substream *substream)
1435 {
1436         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1437         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1438         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1439         int ret;
1440
1441         ret = rsnd_dai_call(hw_free, io, substream);
1442         if (ret)
1443                 return ret;
1444
1445         return snd_pcm_lib_free_pages(substream);
1446 }
1447
1448 static snd_pcm_uframes_t rsnd_pointer(struct snd_soc_component *component,
1449                                       struct snd_pcm_substream *substream)
1450 {
1451         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1452         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1453         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1454         snd_pcm_uframes_t pointer = 0;
1455
1456         rsnd_dai_call(pointer, io, &pointer);
1457
1458         return pointer;
1459 }
1460
1461 /*
1462  *              snd_kcontrol
1463  */
1464 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1465                            struct snd_ctl_elem_info *uinfo)
1466 {
1467         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1468
1469         if (cfg->texts) {
1470                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1471                 uinfo->count = cfg->size;
1472                 uinfo->value.enumerated.items = cfg->max;
1473                 if (uinfo->value.enumerated.item >= cfg->max)
1474                         uinfo->value.enumerated.item = cfg->max - 1;
1475                 strlcpy(uinfo->value.enumerated.name,
1476                         cfg->texts[uinfo->value.enumerated.item],
1477                         sizeof(uinfo->value.enumerated.name));
1478         } else {
1479                 uinfo->count = cfg->size;
1480                 uinfo->value.integer.min = 0;
1481                 uinfo->value.integer.max = cfg->max;
1482                 uinfo->type = (cfg->max == 1) ?
1483                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1484                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1485         }
1486
1487         return 0;
1488 }
1489
1490 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1491                           struct snd_ctl_elem_value *uc)
1492 {
1493         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1494         int i;
1495
1496         for (i = 0; i < cfg->size; i++)
1497                 if (cfg->texts)
1498                         uc->value.enumerated.item[i] = cfg->val[i];
1499                 else
1500                         uc->value.integer.value[i] = cfg->val[i];
1501
1502         return 0;
1503 }
1504
1505 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1506                           struct snd_ctl_elem_value *uc)
1507 {
1508         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1509         int i, change = 0;
1510
1511         if (!cfg->accept(cfg->io))
1512                 return 0;
1513
1514         for (i = 0; i < cfg->size; i++) {
1515                 if (cfg->texts) {
1516                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1517                         cfg->val[i] = uc->value.enumerated.item[i];
1518                 } else {
1519                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1520                         cfg->val[i] = uc->value.integer.value[i];
1521                 }
1522         }
1523
1524         if (change && cfg->update)
1525                 cfg->update(cfg->io, cfg->mod);
1526
1527         return change;
1528 }
1529
1530 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1531 {
1532         return 1;
1533 }
1534
1535 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1536 {
1537         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1538         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1539         struct device *dev = rsnd_priv_to_dev(priv);
1540
1541         if (!runtime) {
1542                 dev_warn(dev, "Can't update kctrl when idle\n");
1543                 return 0;
1544         }
1545
1546         return 1;
1547 }
1548
1549 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1550 {
1551         cfg->cfg.val = cfg->val;
1552
1553         return &cfg->cfg;
1554 }
1555
1556 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1557 {
1558         cfg->cfg.val = &cfg->val;
1559
1560         return &cfg->cfg;
1561 }
1562
1563 const char * const volume_ramp_rate[] = {
1564         "128 dB/1 step",         /* 00000 */
1565         "64 dB/1 step",          /* 00001 */
1566         "32 dB/1 step",          /* 00010 */
1567         "16 dB/1 step",          /* 00011 */
1568         "8 dB/1 step",           /* 00100 */
1569         "4 dB/1 step",           /* 00101 */
1570         "2 dB/1 step",           /* 00110 */
1571         "1 dB/1 step",           /* 00111 */
1572         "0.5 dB/1 step",         /* 01000 */
1573         "0.25 dB/1 step",        /* 01001 */
1574         "0.125 dB/1 step",       /* 01010 = VOLUME_RAMP_MAX_MIX */
1575         "0.125 dB/2 steps",      /* 01011 */
1576         "0.125 dB/4 steps",      /* 01100 */
1577         "0.125 dB/8 steps",      /* 01101 */
1578         "0.125 dB/16 steps",     /* 01110 */
1579         "0.125 dB/32 steps",     /* 01111 */
1580         "0.125 dB/64 steps",     /* 10000 */
1581         "0.125 dB/128 steps",    /* 10001 */
1582         "0.125 dB/256 steps",    /* 10010 */
1583         "0.125 dB/512 steps",    /* 10011 */
1584         "0.125 dB/1024 steps",   /* 10100 */
1585         "0.125 dB/2048 steps",   /* 10101 */
1586         "0.125 dB/4096 steps",   /* 10110 */
1587         "0.125 dB/8192 steps",   /* 10111 = VOLUME_RAMP_MAX_DVC */
1588 };
1589
1590 int rsnd_kctrl_new(struct rsnd_mod *mod,
1591                    struct rsnd_dai_stream *io,
1592                    struct snd_soc_pcm_runtime *rtd,
1593                    const unsigned char *name,
1594                    int (*accept)(struct rsnd_dai_stream *io),
1595                    void (*update)(struct rsnd_dai_stream *io,
1596                                   struct rsnd_mod *mod),
1597                    struct rsnd_kctrl_cfg *cfg,
1598                    const char * const *texts,
1599                    int size,
1600                    u32 max)
1601 {
1602         struct snd_card *card = rtd->card->snd_card;
1603         struct snd_kcontrol *kctrl;
1604         struct snd_kcontrol_new knew = {
1605                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1606                 .name           = name,
1607                 .info           = rsnd_kctrl_info,
1608                 .index          = rtd->num,
1609                 .get            = rsnd_kctrl_get,
1610                 .put            = rsnd_kctrl_put,
1611         };
1612         int ret;
1613
1614         /*
1615          * 1) Avoid duplicate register for DVC with MIX case
1616          * 2) Allow duplicate register for MIX
1617          * 3) re-register if card was rebinded
1618          */
1619         list_for_each_entry(kctrl, &card->controls, list) {
1620                 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1621
1622                 if (c == cfg)
1623                         return 0;
1624         }
1625
1626         if (size > RSND_MAX_CHANNELS)
1627                 return -EINVAL;
1628
1629         kctrl = snd_ctl_new1(&knew, cfg);
1630         if (!kctrl)
1631                 return -ENOMEM;
1632
1633         ret = snd_ctl_add(card, kctrl);
1634         if (ret < 0)
1635                 return ret;
1636
1637         cfg->texts      = texts;
1638         cfg->max        = max;
1639         cfg->size       = size;
1640         cfg->accept     = accept;
1641         cfg->update     = update;
1642         cfg->card       = card;
1643         cfg->kctrl      = kctrl;
1644         cfg->io         = io;
1645         cfg->mod        = mod;
1646
1647         return 0;
1648 }
1649
1650 /*
1651  *              snd_soc_component
1652  */
1653 static const struct snd_soc_component_driver rsnd_soc_component = {
1654         .name           = "rsnd",
1655         .ioctl          = snd_soc_pcm_lib_ioctl,
1656         .hw_params      = rsnd_hw_params,
1657         .hw_free        = rsnd_hw_free,
1658         .pointer        = rsnd_pointer,
1659 };
1660
1661 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1662                                        struct rsnd_dai_stream *io)
1663 {
1664         int ret;
1665
1666         ret = rsnd_dai_call(probe, io, priv);
1667         if (ret == -EAGAIN) {
1668                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1669                 struct rsnd_mod *mod;
1670                 int i;
1671
1672                 /*
1673                  * Fallback to PIO mode
1674                  */
1675
1676                 /*
1677                  * call "remove" for SSI/SRC/DVC
1678                  * SSI will be switch to PIO mode if it was DMA mode
1679                  * see
1680                  *      rsnd_dma_init()
1681                  *      rsnd_ssi_fallback()
1682                  */
1683                 rsnd_dai_call(remove, io, priv);
1684
1685                 /*
1686                  * remove all mod from io
1687                  * and, re connect ssi
1688                  */
1689                 for_each_rsnd_mod(i, mod, io)
1690                         rsnd_dai_disconnect(mod, io, i);
1691                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1692
1693                 /*
1694                  * fallback
1695                  */
1696                 rsnd_dai_call(fallback, io, priv);
1697
1698                 /*
1699                  * retry to "probe".
1700                  * DAI has SSI which is PIO mode only now.
1701                  */
1702                 ret = rsnd_dai_call(probe, io, priv);
1703         }
1704
1705         return ret;
1706 }
1707
1708 /*
1709  *      rsnd probe
1710  */
1711 static int rsnd_probe(struct platform_device *pdev)
1712 {
1713         struct rsnd_priv *priv;
1714         struct device *dev = &pdev->dev;
1715         struct rsnd_dai *rdai;
1716         int (*probe_func[])(struct rsnd_priv *priv) = {
1717                 rsnd_gen_probe,
1718                 rsnd_dma_probe,
1719                 rsnd_ssi_probe,
1720                 rsnd_ssiu_probe,
1721                 rsnd_src_probe,
1722                 rsnd_ctu_probe,
1723                 rsnd_mix_probe,
1724                 rsnd_dvc_probe,
1725                 rsnd_cmd_probe,
1726                 rsnd_adg_probe,
1727                 rsnd_dai_probe,
1728         };
1729         int ret, i;
1730
1731         /*
1732          *      init priv data
1733          */
1734         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1735         if (!priv)
1736                 return -ENODEV;
1737
1738         priv->pdev      = pdev;
1739         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1740         spin_lock_init(&priv->lock);
1741
1742         /*
1743          *      init each module
1744          */
1745         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1746                 ret = probe_func[i](priv);
1747                 if (ret)
1748                         return ret;
1749         }
1750
1751         for_each_rsnd_dai(rdai, priv, i) {
1752                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1753                 if (ret)
1754                         goto exit_snd_probe;
1755
1756                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1757                 if (ret)
1758                         goto exit_snd_probe;
1759         }
1760
1761         dev_set_drvdata(dev, priv);
1762
1763         /*
1764          *      asoc register
1765          */
1766         ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1767                                          priv->daidrv, rsnd_rdai_nr(priv));
1768         if (ret < 0) {
1769                 dev_err(dev, "cannot snd dai register\n");
1770                 goto exit_snd_probe;
1771         }
1772
1773         pm_runtime_enable(dev);
1774
1775         dev_info(dev, "probed\n");
1776         return ret;
1777
1778 exit_snd_probe:
1779         for_each_rsnd_dai(rdai, priv, i) {
1780                 rsnd_dai_call(remove, &rdai->playback, priv);
1781                 rsnd_dai_call(remove, &rdai->capture, priv);
1782         }
1783
1784         /*
1785          * adg is very special mod which can't use rsnd_dai_call(remove),
1786          * and it registers ADG clock on probe.
1787          * It should be unregister if probe failed.
1788          * Mainly it is assuming -EPROBE_DEFER case
1789          */
1790         rsnd_adg_remove(priv);
1791
1792         return ret;
1793 }
1794
1795 static int rsnd_remove(struct platform_device *pdev)
1796 {
1797         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1798         struct rsnd_dai *rdai;
1799         void (*remove_func[])(struct rsnd_priv *priv) = {
1800                 rsnd_ssi_remove,
1801                 rsnd_ssiu_remove,
1802                 rsnd_src_remove,
1803                 rsnd_ctu_remove,
1804                 rsnd_mix_remove,
1805                 rsnd_dvc_remove,
1806                 rsnd_cmd_remove,
1807                 rsnd_adg_remove,
1808         };
1809         int ret = 0, i;
1810
1811         snd_soc_disconnect_sync(&pdev->dev);
1812
1813         pm_runtime_disable(&pdev->dev);
1814
1815         for_each_rsnd_dai(rdai, priv, i) {
1816                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1817                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1818         }
1819
1820         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1821                 remove_func[i](priv);
1822
1823         return ret;
1824 }
1825
1826 static int __maybe_unused rsnd_suspend(struct device *dev)
1827 {
1828         struct rsnd_priv *priv = dev_get_drvdata(dev);
1829
1830         rsnd_adg_clk_disable(priv);
1831
1832         return 0;
1833 }
1834
1835 static int __maybe_unused rsnd_resume(struct device *dev)
1836 {
1837         struct rsnd_priv *priv = dev_get_drvdata(dev);
1838
1839         rsnd_adg_clk_enable(priv);
1840
1841         return 0;
1842 }
1843
1844 static const struct dev_pm_ops rsnd_pm_ops = {
1845         SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1846 };
1847
1848 static struct platform_driver rsnd_driver = {
1849         .driver = {
1850                 .name   = "rcar_sound",
1851                 .pm     = &rsnd_pm_ops,
1852                 .of_match_table = rsnd_of_match,
1853         },
1854         .probe          = rsnd_probe,
1855         .remove         = rsnd_remove,
1856 };
1857 module_platform_driver(rsnd_driver);
1858
1859 MODULE_LICENSE("GPL v2");
1860 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1861 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1862 MODULE_ALIAS("platform:rcar-pcm-audio");