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         static const u32 dalign_values[8][2] = {
 380                 {0x76543210, 0x67452301},
 381                 {0x00000032, 0x00000023},
 382                 {0x00007654, 0x00006745},
 383                 {0x00000076, 0x00000067},
 384                 {0xfedcba98, 0xefcdab89},
 385                 {0x000000ba, 0x000000ab},
 386                 {0x0000fedc, 0x0000efcd},
 387                 {0x000000fe, 0x000000ef},
 388         };
 389         int id = 0, inv;
 390         struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
 391         struct rsnd_mod *target;
 392         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 393
 394         /*
 395          * *Hardware* L/R and *Software* L/R are inverted for 16bit data.
 396          *          31..16 15...0
 397          *      HW: [L ch] [R ch]
 398          *      SW: [R ch] [L ch]
 399          * We need to care about inversion timing to control
 400          * Playback/Capture correctly.
 401          * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
 402          *
 403          * sL/R : software L/R
 404          * hL/R : hardware L/R
 405          * (*)  : conversion timing
 406          *
 407          * Playback
 408          *           sL/R (*) hL/R     hL/R     hL/R      hL/R     hL/R
 409          *      [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
 410          *
 411          * Capture
 412          *           hL/R     hL/R      hL/R     hL/R     hL/R (*) sL/R
 413          *      codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
 414          */
 415         if (rsnd_io_is_play(io)) {
 416                 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
 417
 418                 target = src ? src : ssiu;
 419         } else {
 420                 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
 421
 422                 target = cmd ? cmd : ssiu;
 423         }
 424
 425         if (mod == ssiu)
 426                 id = rsnd_mod_id_sub(mod);
 427
 428         /* Non target mod or non 16bit needs normal DALIGN */
 429         if ((snd_pcm_format_width(runtime->format) != 16) ||
 430             (mod != target))
 431                 inv = 0;
 432         /* Target mod needs inverted DALIGN when 16bit */
 433         else
 434                 inv = 1;
 435
 436         return dalign_values[id][inv];
 437 }
 438
 439 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
 440 {
 441         enum rsnd_mod_type playback_mods[] = {
 442                 RSND_MOD_SRC,
 443                 RSND_MOD_CMD,
 444                 RSND_MOD_SSIU,
 445         };
 446         enum rsnd_mod_type capture_mods[] = {
 447                 RSND_MOD_CMD,
 448                 RSND_MOD_SRC,
 449                 RSND_MOD_SSIU,
 450         };
 451         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 452         struct rsnd_mod *tmod = NULL;
 453         enum rsnd_mod_type *mods =
 454                 rsnd_io_is_play(io) ?
 455                 playback_mods : capture_mods;
 456         int i;
 457
 458         /*
 459          * This is needed for 24bit data
 460          * We need to shift 8bit
 461          *
 462          * Linux 24bit data is located as 0x00******
 463          * HW    24bit data is located as 0x******00
 464          *
 465          */
 466         if (snd_pcm_format_width(runtime->format) != 24)
 467                 return 0;
 468
 469         for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
 470                 tmod = rsnd_io_to_mod(io, mods[i]);
 471                 if (tmod)
 472                         break;
 473         }
 474
 475         if (tmod != mod)
 476                 return 0;
 477
 478         if (rsnd_io_is_play(io))
 479                 return  (0 << 20) | /* shift to Left */
 480                         (8 << 16);  /* 8bit */
 481         else
 482                 return  (1 << 20) | /* shift to Right */
 483                         (8 << 16);  /* 8bit */
 484 }
 485
 486 /*
 487  *      rsnd_dai functions
 488  */
 489 struct rsnd_mod *rsnd_mod_next(int *iterator,
 490                                struct rsnd_dai_stream *io,
 491                                enum rsnd_mod_type *array,
 492                                int array_size)
 493 {
 494         struct rsnd_mod *mod;
 495         enum rsnd_mod_type type;
 496         int max = array ? array_size : RSND_MOD_MAX;
 497
 498         for (; *iterator < max; (*iterator)++) {
 499                 type = (array) ? array[*iterator] : *iterator;
 500                 mod = rsnd_io_to_mod(io, type);
 501                 if (mod)
 502                         return mod;
 503         }
 504
 505         return NULL;
 506 }
 507
 508 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
 509         {
 510                 /* CAPTURE */
 511                 RSND_MOD_AUDMAPP,
 512                 RSND_MOD_AUDMA,
 513                 RSND_MOD_DVC,
 514                 RSND_MOD_MIX,
 515                 RSND_MOD_CTU,
 516                 RSND_MOD_CMD,
 517                 RSND_MOD_SRC,
 518                 RSND_MOD_SSIU,
 519                 RSND_MOD_SSIM3,
 520                 RSND_MOD_SSIM2,
 521                 RSND_MOD_SSIM1,
 522                 RSND_MOD_SSIP,
 523                 RSND_MOD_SSI,
 524         }, {
 525                 /* PLAYBACK */
 526                 RSND_MOD_AUDMAPP,
 527                 RSND_MOD_AUDMA,
 528                 RSND_MOD_SSIM3,
 529                 RSND_MOD_SSIM2,
 530                 RSND_MOD_SSIM1,
 531                 RSND_MOD_SSIP,
 532                 RSND_MOD_SSI,
 533                 RSND_MOD_SSIU,
 534                 RSND_MOD_DVC,
 535                 RSND_MOD_MIX,
 536                 RSND_MOD_CTU,
 537                 RSND_MOD_CMD,
 538                 RSND_MOD_SRC,
 539         },
 540 };
 541
 542 static int rsnd_status_update(u32 *status,
 543                               int shift, int add, int timing)
 544 {
 545         u32 mask        = 0xF << shift;
 546         u8 val          = (*status >> shift) & 0xF;
 547         u8 next_val     = (val + add) & 0xF;
 548         int func_call   = (val == timing);
 549
 550         if (next_val == 0xF) /* underflow case */
 551                 func_call = 0;
 552         else
 553                 *status = (*status & ~mask) + (next_val << shift);
 554
 555         return func_call;
 556 }
 557
 558 #define rsnd_dai_call(fn, io, param...)                                 \
 559 ({                                                                      \
 560         struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));     \
 561         struct rsnd_mod *mod;                                           \
 562         int is_play = rsnd_io_is_play(io);                              \
 563         int ret = 0, i;                                                 \
 564         enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
 565         for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
 566                 int tmp = 0;                                            \
 567                 u32 *status = mod->ops->get_status(mod, io, types[i]);  \
 568                 int func_call = rsnd_status_update(status,              \
 569                                                 __rsnd_mod_shift_##fn,  \
 570                                                 __rsnd_mod_add_##fn,    \
 571                                                 __rsnd_mod_call_##fn);  \
 572                 rsnd_dbg_dai_call(dev, "%s\t0x%08x %s\n",               \
 573                         rsnd_mod_name(mod), *status,    \
 574                         (func_call && (mod)->ops->fn) ? #fn : "");      \
 575                 if (func_call && (mod)->ops->fn)                        \
 576                         tmp = (mod)->ops->fn(mod, io, param);           \
 577                 if (tmp && (tmp != -EPROBE_DEFER))                      \
 578                         dev_err(dev, "%s : %s error %d\n",              \
 579                                 rsnd_mod_name(mod), #fn, tmp);          \
 580                 ret |= tmp;                                             \
 581         }                                                               \
 582         ret;                                                            \
 583 })
 584
 585 int rsnd_dai_connect(struct rsnd_mod *mod,
 586                      struct rsnd_dai_stream *io,
 587                      enum rsnd_mod_type type)
 588 {
 589         struct rsnd_priv *priv;
 590         struct device *dev;
 591
 592         if (!mod)
 593                 return -EIO;
 594
 595         if (io->mod[type] == mod)
 596                 return 0;
 597
 598         if (io->mod[type])
 599                 return -EINVAL;
 600
 601         priv = rsnd_mod_to_priv(mod);
 602         dev = rsnd_priv_to_dev(priv);
 603
 604         io->mod[type] = mod;
 605
 606         dev_dbg(dev, "%s is connected to io (%s)\n",
 607                 rsnd_mod_name(mod),
 608                 rsnd_io_is_play(io) ? "Playback" : "Capture");
 609
 610         return 0;
 611 }
 612
 613 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
 614                                 struct rsnd_dai_stream *io,
 615                                 enum rsnd_mod_type type)
 616 {
 617         io->mod[type] = NULL;
 618 }
 619
 620 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
 621                             int max_channels)
 622 {
 623         if (max_channels > 0)
 624                 rdai->max_channels = max_channels;
 625
 626         return rdai->max_channels;
 627 }
 628
 629 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
 630                             int ssi_lane)
 631 {
 632         if (ssi_lane > 0)
 633                 rdai->ssi_lane = ssi_lane;
 634
 635         return rdai->ssi_lane;
 636 }
 637
 638 int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width)
 639 {
 640         if (width > 0)
 641                 rdai->chan_width = width;
 642
 643         return rdai->chan_width;
 644 }
 645
 646 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
 647 {
 648         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 649                 return NULL;
 650
 651         return priv->rdai + id;
 652 }
 653
 654 static struct snd_soc_dai_driver
 655 *rsnd_daidrv_get(struct rsnd_priv *priv, int id)
 656 {
 657         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
 658                 return NULL;
 659
 660         return priv->daidrv + id;
 661 }
 662
 663 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
 664 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
 665 {
 666         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 667
 668         return rsnd_rdai_get(priv, dai->id);
 669 }
 670
 671 /*
 672  *      rsnd_soc_dai functions
 673  */
 674 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
 675 {
 676         struct snd_pcm_substream *substream = io->substream;
 677
 678         /*
 679          * this function should be called...
 680          *
 681          * - if rsnd_dai_pointer_update() returns true
 682          * - without spin lock
 683          */
 684
 685         snd_pcm_period_elapsed(substream);
 686 }
 687
 688 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
 689                                 struct snd_pcm_substream *substream)
 690 {
 691         io->substream           = substream;
 692 }
 693
 694 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
 695 {
 696         io->substream           = NULL;
 697 }
 698
 699 static
 700 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
 701 {
 702         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 703
 704         return  rtd->cpu_dai;
 705 }
 706
 707 static
 708 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
 709                                         struct snd_pcm_substream *substream)
 710 {
 711         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 712                 return &rdai->playback;
 713         else
 714                 return &rdai->capture;
 715 }
 716
 717 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 718                             struct snd_soc_dai *dai)
 719 {
 720         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 721         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 722         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 723         int ret;
 724         unsigned long flags;
 725
 726         spin_lock_irqsave(&priv->lock, flags);
 727
 728         switch (cmd) {
 729         case SNDRV_PCM_TRIGGER_START:
 730         case SNDRV_PCM_TRIGGER_RESUME:
 731                 ret = rsnd_dai_call(init, io, priv);
 732                 if (ret < 0)
 733                         goto dai_trigger_end;
 734
 735                 ret = rsnd_dai_call(start, io, priv);
 736                 if (ret < 0)
 737                         goto dai_trigger_end;
 738
 739                 ret = rsnd_dai_call(irq, io, priv, 1);
 740                 if (ret < 0)
 741                         goto dai_trigger_end;
 742
 743                 break;
 744         case SNDRV_PCM_TRIGGER_STOP:
 745         case SNDRV_PCM_TRIGGER_SUSPEND:
 746                 ret = rsnd_dai_call(irq, io, priv, 0);
 747
 748                 ret |= rsnd_dai_call(stop, io, priv);
 749
 750                 ret |= rsnd_dai_call(quit, io, priv);
 751
 752                 break;
 753         default:
 754                 ret = -EINVAL;
 755         }
 756
 757 dai_trigger_end:
 758         spin_unlock_irqrestore(&priv->lock, flags);
 759
 760         return ret;
 761 }
 762
 763 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 764 {
 765         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 766
 767         /* set master/slave audio interface */
 768         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 769         case SND_SOC_DAIFMT_CBM_CFM:
 770                 rdai->clk_master = 0;
 771                 break;
 772         case SND_SOC_DAIFMT_CBS_CFS:
 773                 rdai->clk_master = 1; /* codec is slave, cpu is master */
 774                 break;
 775         default:
 776                 return -EINVAL;
 777         }
 778
 779         /* set format */
 780         rdai->bit_clk_inv = 0;
 781         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 782         case SND_SOC_DAIFMT_I2S:
 783                 rdai->sys_delay = 0;
 784                 rdai->data_alignment = 0;
 785                 rdai->frm_clk_inv = 0;
 786                 break;
 787         case SND_SOC_DAIFMT_LEFT_J:
 788         case SND_SOC_DAIFMT_DSP_B:
 789                 rdai->sys_delay = 1;
 790                 rdai->data_alignment = 0;
 791                 rdai->frm_clk_inv = 1;
 792                 break;
 793         case SND_SOC_DAIFMT_RIGHT_J:
 794                 rdai->sys_delay = 1;
 795                 rdai->data_alignment = 1;
 796                 rdai->frm_clk_inv = 1;
 797                 break;
 798         case SND_SOC_DAIFMT_DSP_A:
 799                 rdai->sys_delay = 0;
 800                 rdai->data_alignment = 0;
 801                 rdai->frm_clk_inv = 1;
 802                 break;
 803         }
 804
 805         /* set clock inversion */
 806         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 807         case SND_SOC_DAIFMT_NB_IF:
 808                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 809                 break;
 810         case SND_SOC_DAIFMT_IB_NF:
 811                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 812                 break;
 813         case SND_SOC_DAIFMT_IB_IF:
 814                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
 815                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
 816                 break;
 817         case SND_SOC_DAIFMT_NB_NF:
 818         default:
 819                 break;
 820         }
 821
 822         return 0;
 823 }
 824
 825 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 826                                      u32 tx_mask, u32 rx_mask,
 827                                      int slots, int slot_width)
 828 {
 829         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
 830         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 831         struct device *dev = rsnd_priv_to_dev(priv);
 832
 833         switch (slot_width) {
 834         case 16:
 835         case 24:
 836         case 32:
 837                 break;
 838         default:
 839                 /* use default */
 840                 slot_width = 32;
 841         }
 842
 843         switch (slots) {
 844         case 2:
 845                 /* TDM Split Mode */
 846         case 6:
 847         case 8:
 848                 /* TDM Extend Mode */
 849                 rsnd_rdai_channels_set(rdai, slots);
 850                 rsnd_rdai_ssi_lane_set(rdai, 1);
 851                 rsnd_rdai_width_set(rdai, slot_width);
 852                 break;
 853         default:
 854                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
 855                 return -EINVAL;
 856         }
 857
 858         return 0;
 859 }
 860
 861 static unsigned int rsnd_soc_hw_channels_list[] = {
 862         2, 6, 8,
 863 };
 864
 865 static unsigned int rsnd_soc_hw_rate_list[] = {
 866           8000,
 867          11025,
 868          16000,
 869          22050,
 870          32000,
 871          44100,
 872          48000,
 873          64000,
 874          88200,
 875          96000,
 876         176400,
 877         192000,
 878 };
 879
 880 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai,
 881                             unsigned int *list, int list_num,
 882                             struct snd_interval *baseline, struct snd_interval *iv)
 883 {
 884         struct snd_interval p;
 885         unsigned int rate;
 886         int i;
 887
 888         snd_interval_any(&p);
 889         p.min = UINT_MAX;
 890         p.max = 0;
 891
 892         for (i = 0; i < list_num; i++) {
 893
 894                 if (!snd_interval_test(iv, list[i]))
 895                         continue;
 896
 897                 rate = rsnd_ssi_clk_query(rdai,
 898                                           baseline->min, list[i], NULL);
 899                 if (rate > 0) {
 900                         p.min = min(p.min, list[i]);
 901                         p.max = max(p.max, list[i]);
 902                 }
 903
 904                 rate = rsnd_ssi_clk_query(rdai,
 905                                           baseline->max, list[i], NULL);
 906                 if (rate > 0) {
 907                         p.min = min(p.min, list[i]);
 908                         p.max = max(p.max, list[i]);
 909                 }
 910         }
 911
 912         return snd_interval_refine(iv, &p);
 913 }
 914
 915 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
 916                                  struct snd_pcm_hw_rule *rule)
 917 {
 918         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 919         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 920         struct snd_interval ic;
 921         struct rsnd_dai_stream *io = rule->private;
 922         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 923
 924         /*
 925          * possible sampling rate limitation is same as
 926          * 2ch if it supports multi ssi
 927          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 928          */
 929         ic = *ic_;
 930         ic.min =
 931         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 932
 933         return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list,
 934                                 ARRAY_SIZE(rsnd_soc_hw_rate_list),
 935                                 &ic, ir);
 936 }
 937
 938 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
 939                                      struct snd_pcm_hw_rule *rule)
 940 {
 941         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 942         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 943         struct snd_interval ic;
 944         struct rsnd_dai_stream *io = rule->private;
 945         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
 946
 947         /*
 948          * possible sampling rate limitation is same as
 949          * 2ch if it supports multi ssi
 950          * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
 951          */
 952         ic = *ic_;
 953         ic.min =
 954         ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
 955
 956         return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list,
 957                                 ARRAY_SIZE(rsnd_soc_hw_channels_list),
 958                                 ir, &ic);
 959 }
 960
 961 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
 962         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
 963                         SNDRV_PCM_INFO_MMAP             |
 964                         SNDRV_PCM_INFO_MMAP_VALID,
 965         .buffer_bytes_max       = 64 * 1024,
 966         .period_bytes_min       = 32,
 967         .period_bytes_max       = 8192,
 968         .periods_min            = 1,
 969         .periods_max            = 32,
 970         .fifo_size              = 256,
 971 };
 972
 973 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
 974                                 struct snd_soc_dai *dai)
 975 {
 976         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
 977         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
 978         struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
 979         struct snd_pcm_runtime *runtime = substream->runtime;
 980         unsigned int max_channels = rsnd_rdai_channels_get(rdai);
 981         int i;
 982
 983         rsnd_dai_stream_init(io, substream);
 984
 985         /*
 986          * Channel Limitation
 987          * It depends on Platform design
 988          */
 989         constraint->list        = rsnd_soc_hw_channels_list;
 990         constraint->count       = 0;
 991         constraint->mask        = 0;
 992
 993         for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
 994                 if (rsnd_soc_hw_channels_list[i] > max_channels)
 995                         break;
 996                 constraint->count = i + 1;
 997         }
 998
 999         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
1000
1001         snd_pcm_hw_constraint_list(runtime, 0,
1002                                    SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
1003
1004         snd_pcm_hw_constraint_integer(runtime,
1005                                       SNDRV_PCM_HW_PARAM_PERIODS);
1006
1007         /*
1008          * Sampling Rate / Channel Limitation
1009          * It depends on Clock Master Mode
1010          */
1011         if (rsnd_rdai_is_clk_master(rdai)) {
1012                 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
1013
1014                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1015                                     rsnd_soc_hw_rule_rate,
1016                                     is_play ? &rdai->playback : &rdai->capture,
1017                                     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
1018                 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1019                                     rsnd_soc_hw_rule_channels,
1020                                     is_play ? &rdai->playback : &rdai->capture,
1021                                     SNDRV_PCM_HW_PARAM_RATE, -1);
1022         }
1023
1024         return 0;
1025 }
1026
1027 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
1028                                   struct snd_soc_dai *dai)
1029 {
1030         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1031         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1032         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1033
1034         /*
1035          * call rsnd_dai_call without spinlock
1036          */
1037         rsnd_dai_call(cleanup, io, priv);
1038
1039         rsnd_dai_stream_quit(io);
1040 }
1041
1042 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
1043                                 struct snd_soc_dai *dai)
1044 {
1045         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
1046         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1047         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1048
1049         return rsnd_dai_call(prepare, io, priv);
1050 }
1051
1052 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
1053         .startup        = rsnd_soc_dai_startup,
1054         .shutdown       = rsnd_soc_dai_shutdown,
1055         .trigger        = rsnd_soc_dai_trigger,
1056         .set_fmt        = rsnd_soc_dai_set_fmt,
1057         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
1058         .prepare        = rsnd_soc_dai_prepare,
1059 };
1060
1061 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv,
1062                                       struct rsnd_dai_stream *io,
1063                                       struct device_node *dai_np)
1064 {
1065         struct device *dev = rsnd_priv_to_dev(priv);
1066         struct device_node *ssiu_np = rsnd_ssiu_of_node(priv);
1067         struct device_node *np;
1068         int is_play = rsnd_io_is_play(io);
1069         int i, j;
1070
1071         if (!ssiu_np)
1072                 return;
1073
1074         /*
1075          * This driver assumes that it is TDM Split mode
1076          * if it includes ssiu node
1077          */
1078         for (i = 0;; i++) {
1079                 struct device_node *node = is_play ?
1080                         of_parse_phandle(dai_np, "playback", i) :
1081                         of_parse_phandle(dai_np, "capture",  i);
1082
1083                 if (!node)
1084                         break;
1085
1086                 j = 0;
1087                 for_each_child_of_node(ssiu_np, np) {
1088                         if (np == node) {
1089                                 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT);
1090                                 dev_dbg(dev, "%s is part of TDM Split\n", io->name);
1091                         }
1092                         j++;
1093                 }
1094
1095                 of_node_put(node);
1096         }
1097
1098         of_node_put(ssiu_np);
1099 }
1100
1101 static void rsnd_parse_connect_simple(struct rsnd_priv *priv,
1102                                       struct rsnd_dai_stream *io,
1103                                       struct device_node *dai_np)
1104 {
1105         if (!rsnd_io_to_mod_ssi(io))
1106                 return;
1107
1108         rsnd_parse_tdm_split_mode(priv, io, dai_np);
1109 }
1110
1111 static void rsnd_parse_connect_graph(struct rsnd_priv *priv,
1112                                      struct rsnd_dai_stream *io,
1113                                      struct device_node *endpoint)
1114 {
1115         struct device *dev = rsnd_priv_to_dev(priv);
1116         struct device_node *remote_node;
1117
1118         if (!rsnd_io_to_mod_ssi(io))
1119                 return;
1120
1121         remote_node = of_graph_get_remote_port_parent(endpoint);
1122
1123         /* HDMI0 */
1124         if (strstr(remote_node->full_name, "hdmi@fead0000")) {
1125                 rsnd_flags_set(io, RSND_STREAM_HDMI0);
1126                 dev_dbg(dev, "%s connected to HDMI0\n", io->name);
1127         }
1128
1129         /* HDMI1 */
1130         if (strstr(remote_node->full_name, "hdmi@feae0000")) {
1131                 rsnd_flags_set(io, RSND_STREAM_HDMI1);
1132                 dev_dbg(dev, "%s connected to HDMI1\n", io->name);
1133         }
1134
1135         rsnd_parse_tdm_split_mode(priv, io, endpoint);
1136
1137         of_node_put(remote_node);
1138 }
1139
1140 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
1141                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
1142                 struct device_node *node,
1143                 struct device_node *playback,
1144                 struct device_node *capture)
1145 {
1146         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1147         struct device_node *np;
1148         struct rsnd_mod *mod;
1149         int i;
1150
1151         if (!node)
1152                 return;
1153
1154         i = 0;
1155         for_each_child_of_node(node, np) {
1156                 mod = mod_get(priv, i);
1157                 if (np == playback)
1158                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
1159                 if (np == capture)
1160                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
1161                 i++;
1162         }
1163
1164         of_node_put(node);
1165 }
1166
1167 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1168                                             int *is_graph)
1169 {
1170         struct device *dev = rsnd_priv_to_dev(priv);
1171         struct device_node *np = dev->of_node;
1172         struct device_node *dai_node;
1173         struct device_node *ret;
1174
1175         *is_graph = 0;
1176
1177         /*
1178          * parse both previous dai (= rcar_sound,dai), and
1179          * graph dai (= ports/port)
1180          */
1181         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1182         if (dai_node) {
1183                 ret = dai_node;
1184                 goto of_node_compatible;
1185         }
1186
1187         ret = np;
1188
1189         dai_node = of_graph_get_next_endpoint(np, NULL);
1190         if (dai_node)
1191                 goto of_node_graph;
1192
1193         return NULL;
1194
1195 of_node_graph:
1196         *is_graph = 1;
1197 of_node_compatible:
1198         of_node_put(dai_node);
1199
1200         return ret;
1201 }
1202
1203
1204 #define PREALLOC_BUFFER         (32 * 1024)
1205 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1206
1207 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1208                                   struct rsnd_dai_stream *io,
1209                                   int stream)
1210 {
1211         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1212         struct device *dev = rsnd_priv_to_dev(priv);
1213         struct snd_pcm_substream *substream;
1214
1215         /*
1216          * use Audio-DMAC dev if we can use IPMMU
1217          * see
1218          *      rsnd_dmaen_attach()
1219          */
1220         if (io->dmac_dev)
1221                 dev = io->dmac_dev;
1222
1223         for (substream = rtd->pcm->streams[stream].substream;
1224              substream;
1225              substream = substream->next) {
1226                 snd_pcm_lib_preallocate_pages(substream,
1227                                               SNDRV_DMA_TYPE_DEV,
1228                                               dev,
1229                                               PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1230         }
1231
1232         return 0;
1233 }
1234
1235 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd,
1236                         struct snd_soc_dai *dai)
1237 {
1238         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1239         int ret;
1240
1241         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1242         if (ret)
1243                 return ret;
1244
1245         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1246         if (ret)
1247                 return ret;
1248
1249         ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1250                                      SNDRV_PCM_STREAM_PLAYBACK);
1251         if (ret)
1252                 return ret;
1253
1254         ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1255                                      SNDRV_PCM_STREAM_CAPTURE);
1256         if (ret)
1257                 return ret;
1258
1259         return 0;
1260 }
1261
1262 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1263                              struct device_node *dai_np,
1264                              int dai_i)
1265 {
1266         struct device_node *playback, *capture;
1267         struct rsnd_dai_stream *io_playback;
1268         struct rsnd_dai_stream *io_capture;
1269         struct snd_soc_dai_driver *drv;
1270         struct rsnd_dai *rdai;
1271         struct device *dev = rsnd_priv_to_dev(priv);
1272         int io_i;
1273
1274         rdai            = rsnd_rdai_get(priv, dai_i);
1275         drv             = rsnd_daidrv_get(priv, dai_i);
1276         io_playback     = &rdai->playback;
1277         io_capture      = &rdai->capture;
1278
1279         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1280
1281         rdai->priv      = priv;
1282         drv->name       = rdai->name;
1283         drv->ops        = &rsnd_soc_dai_ops;
1284         drv->pcm_new    = rsnd_pcm_new;
1285
1286         snprintf(io_playback->name, RSND_DAI_NAME_SIZE,
1287                  "DAI%d Playback", dai_i);
1288         drv->playback.rates             = RSND_RATES;
1289         drv->playback.formats           = RSND_FMTS;
1290         drv->playback.channels_min      = 2;
1291         drv->playback.channels_max      = 8;
1292         drv->playback.stream_name       = io_playback->name;
1293
1294         snprintf(io_capture->name, RSND_DAI_NAME_SIZE,
1295                  "DAI%d Capture", dai_i);
1296         drv->capture.rates              = RSND_RATES;
1297         drv->capture.formats            = RSND_FMTS;
1298         drv->capture.channels_min       = 2;
1299         drv->capture.channels_max       = 8;
1300         drv->capture.stream_name        = io_capture->name;
1301
1302         io_playback->rdai               = rdai;
1303         io_capture->rdai                = rdai;
1304         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1305         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1306         rsnd_rdai_width_set(rdai, 32);   /* default 32bit width */
1307
1308         for (io_i = 0;; io_i++) {
1309                 playback = of_parse_phandle(dai_np, "playback", io_i);
1310                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1311
1312                 if (!playback && !capture)
1313                         break;
1314
1315                 rsnd_parse_connect_ssi(rdai, playback, capture);
1316                 rsnd_parse_connect_ssiu(rdai, playback, capture);
1317                 rsnd_parse_connect_src(rdai, playback, capture);
1318                 rsnd_parse_connect_ctu(rdai, playback, capture);
1319                 rsnd_parse_connect_mix(rdai, playback, capture);
1320                 rsnd_parse_connect_dvc(rdai, playback, capture);
1321
1322                 of_node_put(playback);
1323                 of_node_put(capture);
1324         }
1325
1326         if (rsnd_ssi_is_pin_sharing(io_capture) ||
1327             rsnd_ssi_is_pin_sharing(io_playback)) {
1328                 /* should have symmetric_rates if pin sharing */
1329                 drv->symmetric_rates = 1;
1330         }
1331
1332         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1333                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1334                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1335 }
1336
1337 static int rsnd_dai_probe(struct rsnd_priv *priv)
1338 {
1339         struct device_node *dai_node;
1340         struct device_node *dai_np;
1341         struct snd_soc_dai_driver *rdrv;
1342         struct device *dev = rsnd_priv_to_dev(priv);
1343         struct rsnd_dai *rdai;
1344         int nr;
1345         int is_graph;
1346         int dai_i;
1347
1348         dai_node = rsnd_dai_of_node(priv, &is_graph);
1349         if (is_graph)
1350                 nr = of_graph_get_endpoint_count(dai_node);
1351         else
1352                 nr = of_get_child_count(dai_node);
1353
1354         if (!nr)
1355                 return -EINVAL;
1356
1357         rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1358         rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1359         if (!rdrv || !rdai)
1360                 return -ENOMEM;
1361
1362         priv->rdai_nr   = nr;
1363         priv->daidrv    = rdrv;
1364         priv->rdai      = rdai;
1365
1366         /*
1367          * parse all dai
1368          */
1369         dai_i = 0;
1370         if (is_graph) {
1371                 for_each_endpoint_of_node(dai_node, dai_np) {
1372                         __rsnd_dai_probe(priv, dai_np, dai_i);
1373                         if (rsnd_is_gen3(priv)) {
1374                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1375
1376                                 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np);
1377                                 rsnd_parse_connect_graph(priv, &rdai->capture,  dai_np);
1378                         }
1379                         dai_i++;
1380                 }
1381         } else {
1382                 for_each_child_of_node(dai_node, dai_np) {
1383                         __rsnd_dai_probe(priv, dai_np, dai_i);
1384                         if (rsnd_is_gen3(priv)) {
1385                                 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1386
1387                                 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np);
1388                                 rsnd_parse_connect_simple(priv, &rdai->capture,  dai_np);
1389                         }
1390                         dai_i++;
1391                 }
1392         }
1393
1394         return 0;
1395 }
1396
1397 /*
1398  *              pcm ops
1399  */
1400 static int rsnd_hw_params(struct snd_soc_component *component,
1401                           struct snd_pcm_substream *substream,
1402                           struct snd_pcm_hw_params *hw_params)
1403 {
1404         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1405         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1406         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1407         struct snd_soc_pcm_runtime *fe = substream->private_data;
1408         int ret;
1409
1410         /*
1411          * rsnd assumes that it might be used under DPCM if user want to use
1412          * channel / rate convert. Then, rsnd should be FE.
1413          * And then, this function will be called *after* BE settings.
1414          * this means, each BE already has fixuped hw_params.
1415          * see
1416          *      dpcm_fe_dai_hw_params()
1417          *      dpcm_be_dai_hw_params()
1418          */
1419         io->converted_rate = 0;
1420         io->converted_chan = 0;
1421         if (fe->dai_link->dynamic) {
1422                 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1423                 struct device *dev = rsnd_priv_to_dev(priv);
1424                 struct snd_soc_dpcm *dpcm;
1425                 struct snd_pcm_hw_params *be_params;
1426                 int stream = substream->stream;
1427
1428                 for_each_dpcm_be(fe, stream, dpcm) {
1429                         be_params = &dpcm->hw_params;
1430                         if (params_channels(hw_params) != params_channels(be_params))
1431                                 io->converted_chan = params_channels(be_params);
1432                         if (params_rate(hw_params) != params_rate(be_params))
1433                                 io->converted_rate = params_rate(be_params);
1434                 }
1435                 if (io->converted_chan)
1436                         dev_dbg(dev, "convert channels = %d\n", io->converted_chan);
1437                 if (io->converted_rate)
1438                         dev_dbg(dev, "convert rate     = %d\n", io->converted_rate);
1439         }
1440
1441         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1442         if (ret)
1443                 return ret;
1444
1445         return snd_pcm_lib_malloc_pages(substream,
1446                                         params_buffer_bytes(hw_params));
1447 }
1448
1449 static int rsnd_hw_free(struct snd_soc_component *component,
1450                         struct snd_pcm_substream *substream)
1451 {
1452         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1453         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1454         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1455         int ret;
1456
1457         ret = rsnd_dai_call(hw_free, io, substream);
1458         if (ret)
1459                 return ret;
1460
1461         return snd_pcm_lib_free_pages(substream);
1462 }
1463
1464 static snd_pcm_uframes_t rsnd_pointer(struct snd_soc_component *component,
1465                                       struct snd_pcm_substream *substream)
1466 {
1467         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1468         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1469         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1470         snd_pcm_uframes_t pointer = 0;
1471
1472         rsnd_dai_call(pointer, io, &pointer);
1473
1474         return pointer;
1475 }
1476
1477 /*
1478  *              snd_kcontrol
1479  */
1480 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1481                            struct snd_ctl_elem_info *uinfo)
1482 {
1483         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1484
1485         if (cfg->texts) {
1486                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1487                 uinfo->count = cfg->size;
1488                 uinfo->value.enumerated.items = cfg->max;
1489                 if (uinfo->value.enumerated.item >= cfg->max)
1490                         uinfo->value.enumerated.item = cfg->max - 1;
1491                 strlcpy(uinfo->value.enumerated.name,
1492                         cfg->texts[uinfo->value.enumerated.item],
1493                         sizeof(uinfo->value.enumerated.name));
1494         } else {
1495                 uinfo->count = cfg->size;
1496                 uinfo->value.integer.min = 0;
1497                 uinfo->value.integer.max = cfg->max;
1498                 uinfo->type = (cfg->max == 1) ?
1499                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1500                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1501         }
1502
1503         return 0;
1504 }
1505
1506 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1507                           struct snd_ctl_elem_value *uc)
1508 {
1509         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1510         int i;
1511
1512         for (i = 0; i < cfg->size; i++)
1513                 if (cfg->texts)
1514                         uc->value.enumerated.item[i] = cfg->val[i];
1515                 else
1516                         uc->value.integer.value[i] = cfg->val[i];
1517
1518         return 0;
1519 }
1520
1521 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1522                           struct snd_ctl_elem_value *uc)
1523 {
1524         struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1525         int i, change = 0;
1526
1527         if (!cfg->accept(cfg->io))
1528                 return 0;
1529
1530         for (i = 0; i < cfg->size; i++) {
1531                 if (cfg->texts) {
1532                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1533                         cfg->val[i] = uc->value.enumerated.item[i];
1534                 } else {
1535                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1536                         cfg->val[i] = uc->value.integer.value[i];
1537                 }
1538         }
1539
1540         if (change && cfg->update)
1541                 cfg->update(cfg->io, cfg->mod);
1542
1543         return change;
1544 }
1545
1546 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1547 {
1548         return 1;
1549 }
1550
1551 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1552 {
1553         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1554         struct rsnd_priv *priv = rsnd_io_to_priv(io);
1555         struct device *dev = rsnd_priv_to_dev(priv);
1556
1557         if (!runtime) {
1558                 dev_warn(dev, "Can't update kctrl when idle\n");
1559                 return 0;
1560         }
1561
1562         return 1;
1563 }
1564
1565 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1566 {
1567         cfg->cfg.val = cfg->val;
1568
1569         return &cfg->cfg;
1570 }
1571
1572 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1573 {
1574         cfg->cfg.val = &cfg->val;
1575
1576         return &cfg->cfg;
1577 }
1578
1579 const char * const volume_ramp_rate[] = {
1580         "128 dB/1 step",         /* 00000 */
1581         "64 dB/1 step",          /* 00001 */
1582         "32 dB/1 step",          /* 00010 */
1583         "16 dB/1 step",          /* 00011 */
1584         "8 dB/1 step",           /* 00100 */
1585         "4 dB/1 step",           /* 00101 */
1586         "2 dB/1 step",           /* 00110 */
1587         "1 dB/1 step",           /* 00111 */
1588         "0.5 dB/1 step",         /* 01000 */
1589         "0.25 dB/1 step",        /* 01001 */
1590         "0.125 dB/1 step",       /* 01010 = VOLUME_RAMP_MAX_MIX */
1591         "0.125 dB/2 steps",      /* 01011 */
1592         "0.125 dB/4 steps",      /* 01100 */
1593         "0.125 dB/8 steps",      /* 01101 */
1594         "0.125 dB/16 steps",     /* 01110 */
1595         "0.125 dB/32 steps",     /* 01111 */
1596         "0.125 dB/64 steps",     /* 10000 */
1597         "0.125 dB/128 steps",    /* 10001 */
1598         "0.125 dB/256 steps",    /* 10010 */
1599         "0.125 dB/512 steps",    /* 10011 */
1600         "0.125 dB/1024 steps",   /* 10100 */
1601         "0.125 dB/2048 steps",   /* 10101 */
1602         "0.125 dB/4096 steps",   /* 10110 */
1603         "0.125 dB/8192 steps",   /* 10111 = VOLUME_RAMP_MAX_DVC */
1604 };
1605
1606 int rsnd_kctrl_new(struct rsnd_mod *mod,
1607                    struct rsnd_dai_stream *io,
1608                    struct snd_soc_pcm_runtime *rtd,
1609                    const unsigned char *name,
1610                    int (*accept)(struct rsnd_dai_stream *io),
1611                    void (*update)(struct rsnd_dai_stream *io,
1612                                   struct rsnd_mod *mod),
1613                    struct rsnd_kctrl_cfg *cfg,
1614                    const char * const *texts,
1615                    int size,
1616                    u32 max)
1617 {
1618         struct snd_card *card = rtd->card->snd_card;
1619         struct snd_kcontrol *kctrl;
1620         struct snd_kcontrol_new knew = {
1621                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1622                 .name           = name,
1623                 .info           = rsnd_kctrl_info,
1624                 .index          = rtd->num,
1625                 .get            = rsnd_kctrl_get,
1626                 .put            = rsnd_kctrl_put,
1627         };
1628         int ret;
1629
1630         /*
1631          * 1) Avoid duplicate register for DVC with MIX case
1632          * 2) Allow duplicate register for MIX
1633          * 3) re-register if card was rebinded
1634          */
1635         list_for_each_entry(kctrl, &card->controls, list) {
1636                 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1637
1638                 if (c == cfg)
1639                         return 0;
1640         }
1641
1642         if (size > RSND_MAX_CHANNELS)
1643                 return -EINVAL;
1644
1645         kctrl = snd_ctl_new1(&knew, cfg);
1646         if (!kctrl)
1647                 return -ENOMEM;
1648
1649         ret = snd_ctl_add(card, kctrl);
1650         if (ret < 0)
1651                 return ret;
1652
1653         cfg->texts      = texts;
1654         cfg->max        = max;
1655         cfg->size       = size;
1656         cfg->accept     = accept;
1657         cfg->update     = update;
1658         cfg->card       = card;
1659         cfg->kctrl      = kctrl;
1660         cfg->io         = io;
1661         cfg->mod        = mod;
1662
1663         return 0;
1664 }
1665
1666 /*
1667  *              snd_soc_component
1668  */
1669 static const struct snd_soc_component_driver rsnd_soc_component = {
1670         .name           = "rsnd",
1671         .ioctl          = snd_soc_pcm_lib_ioctl,
1672         .hw_params      = rsnd_hw_params,
1673         .hw_free        = rsnd_hw_free,
1674         .pointer        = rsnd_pointer,
1675 };
1676
1677 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1678                                        struct rsnd_dai_stream *io)
1679 {
1680         int ret;
1681
1682         ret = rsnd_dai_call(probe, io, priv);
1683         if (ret == -EAGAIN) {
1684                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1685                 struct rsnd_mod *mod;
1686                 int i;
1687
1688                 /*
1689                  * Fallback to PIO mode
1690                  */
1691
1692                 /*
1693                  * call "remove" for SSI/SRC/DVC
1694                  * SSI will be switch to PIO mode if it was DMA mode
1695                  * see
1696                  *      rsnd_dma_init()
1697                  *      rsnd_ssi_fallback()
1698                  */
1699                 rsnd_dai_call(remove, io, priv);
1700
1701                 /*
1702                  * remove all mod from io
1703                  * and, re connect ssi
1704                  */
1705                 for_each_rsnd_mod(i, mod, io)
1706                         rsnd_dai_disconnect(mod, io, i);
1707                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1708
1709                 /*
1710                  * fallback
1711                  */
1712                 rsnd_dai_call(fallback, io, priv);
1713
1714                 /*
1715                  * retry to "probe".
1716                  * DAI has SSI which is PIO mode only now.
1717                  */
1718                 ret = rsnd_dai_call(probe, io, priv);
1719         }
1720
1721         return ret;
1722 }
1723
1724 /*
1725  *      rsnd probe
1726  */
1727 static int rsnd_probe(struct platform_device *pdev)
1728 {
1729         struct rsnd_priv *priv;
1730         struct device *dev = &pdev->dev;
1731         struct rsnd_dai *rdai;
1732         int (*probe_func[])(struct rsnd_priv *priv) = {
1733                 rsnd_gen_probe,
1734                 rsnd_dma_probe,
1735                 rsnd_ssi_probe,
1736                 rsnd_ssiu_probe,
1737                 rsnd_src_probe,
1738                 rsnd_ctu_probe,
1739                 rsnd_mix_probe,
1740                 rsnd_dvc_probe,
1741                 rsnd_cmd_probe,
1742                 rsnd_adg_probe,
1743                 rsnd_dai_probe,
1744         };
1745         int ret, i;
1746
1747         /*
1748          *      init priv data
1749          */
1750         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1751         if (!priv)
1752                 return -ENODEV;
1753
1754         priv->pdev      = pdev;
1755         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1756         spin_lock_init(&priv->lock);
1757
1758         /*
1759          *      init each module
1760          */
1761         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1762                 ret = probe_func[i](priv);
1763                 if (ret)
1764                         return ret;
1765         }
1766
1767         for_each_rsnd_dai(rdai, priv, i) {
1768                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1769                 if (ret)
1770                         goto exit_snd_probe;
1771
1772                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1773                 if (ret)
1774                         goto exit_snd_probe;
1775         }
1776
1777         dev_set_drvdata(dev, priv);
1778
1779         /*
1780          *      asoc register
1781          */
1782         ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1783                                          priv->daidrv, rsnd_rdai_nr(priv));
1784         if (ret < 0) {
1785                 dev_err(dev, "cannot snd dai register\n");
1786                 goto exit_snd_probe;
1787         }
1788
1789         pm_runtime_enable(dev);
1790
1791         dev_info(dev, "probed\n");
1792         return ret;
1793
1794 exit_snd_probe:
1795         for_each_rsnd_dai(rdai, priv, i) {
1796                 rsnd_dai_call(remove, &rdai->playback, priv);
1797                 rsnd_dai_call(remove, &rdai->capture, priv);
1798         }
1799
1800         /*
1801          * adg is very special mod which can't use rsnd_dai_call(remove),
1802          * and it registers ADG clock on probe.
1803          * It should be unregister if probe failed.
1804          * Mainly it is assuming -EPROBE_DEFER case
1805          */
1806         rsnd_adg_remove(priv);
1807
1808         return ret;
1809 }
1810
1811 static int rsnd_remove(struct platform_device *pdev)
1812 {
1813         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1814         struct rsnd_dai *rdai;
1815         void (*remove_func[])(struct rsnd_priv *priv) = {
1816                 rsnd_ssi_remove,
1817                 rsnd_ssiu_remove,
1818                 rsnd_src_remove,
1819                 rsnd_ctu_remove,
1820                 rsnd_mix_remove,
1821                 rsnd_dvc_remove,
1822                 rsnd_cmd_remove,
1823                 rsnd_adg_remove,
1824         };
1825         int ret = 0, i;
1826
1827         snd_soc_disconnect_sync(&pdev->dev);
1828
1829         pm_runtime_disable(&pdev->dev);
1830
1831         for_each_rsnd_dai(rdai, priv, i) {
1832                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1833                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1834         }
1835
1836         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1837                 remove_func[i](priv);
1838
1839         return ret;
1840 }
1841
1842 static int __maybe_unused rsnd_suspend(struct device *dev)
1843 {
1844         struct rsnd_priv *priv = dev_get_drvdata(dev);
1845
1846         rsnd_adg_clk_disable(priv);
1847
1848         return 0;
1849 }
1850
1851 static int __maybe_unused rsnd_resume(struct device *dev)
1852 {
1853         struct rsnd_priv *priv = dev_get_drvdata(dev);
1854
1855         rsnd_adg_clk_enable(priv);
1856
1857         return 0;
1858 }
1859
1860 static const struct dev_pm_ops rsnd_pm_ops = {
1861         SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1862 };
1863
1864 static struct platform_driver rsnd_driver = {
1865         .driver = {
1866                 .name   = "rcar_sound",
1867                 .pm     = &rsnd_pm_ops,
1868                 .of_match_table = rsnd_of_match,
1869         },
1870         .probe          = rsnd_probe,
1871         .remove         = rsnd_remove,
1872 };
1873 module_platform_driver(rsnd_driver);
1874
1875 MODULE_LICENSE("GPL v2");
1876 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1877 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1878 MODULE_ALIAS("platform:rcar-pcm-audio");