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