1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Renesas R-Car SRU/SCU/SSIU/SSI support 4 // 5 // Copyright (C) 2013 Renesas Solutions Corp. 6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 7 // 8 // Based on fsi.c 9 // Kuninori Morimoto <morimoto.kuninori@renesas.com> 10 11 /* 12 * Renesas R-Car sound device structure 13 * 14 * Gen1 15 * 16 * SRU : Sound Routing Unit 17 * - SRC : Sampling Rate Converter 18 * - CMD 19 * - CTU : Channel Count Conversion Unit 20 * - MIX : Mixer 21 * - DVC : Digital Volume and Mute Function 22 * - SSI : Serial Sound Interface 23 * 24 * Gen2 25 * 26 * SCU : Sampling Rate Converter Unit 27 * - SRC : Sampling Rate Converter 28 * - CMD 29 * - CTU : Channel Count Conversion Unit 30 * - MIX : Mixer 31 * - DVC : Digital Volume and Mute Function 32 * SSIU : Serial Sound Interface Unit 33 * - SSI : Serial Sound Interface 34 */ 35 36 /* 37 * driver data Image 38 * 39 * rsnd_priv 40 * | 41 * | ** this depends on Gen1/Gen2 42 * | 43 * +- gen 44 * | 45 * | ** these depend on data path 46 * | ** gen and platform data control it 47 * | 48 * +- rdai[0] 49 * | | sru ssiu ssi 50 * | +- playback -> [mod] -> [mod] -> [mod] -> ... 51 * | | 52 * | | sru ssiu ssi 53 * | +- capture -> [mod] -> [mod] -> [mod] -> ... 54 * | 55 * +- rdai[1] 56 * | | sru ssiu ssi 57 * | +- playback -> [mod] -> [mod] -> [mod] -> ... 58 * | | 59 * | | sru ssiu ssi 60 * | +- capture -> [mod] -> [mod] -> [mod] -> ... 61 * ... 62 * | 63 * | ** these control ssi 64 * | 65 * +- ssi 66 * | | 67 * | +- ssi[0] 68 * | +- ssi[1] 69 * | +- ssi[2] 70 * | ... 71 * | 72 * | ** these control src 73 * | 74 * +- src 75 * | 76 * +- src[0] 77 * +- src[1] 78 * +- src[2] 79 * ... 80 * 81 * 82 * for_each_rsnd_dai(xx, priv, xx) 83 * rdai[0] => rdai[1] => rdai[2] => ... 84 * 85 * for_each_rsnd_mod(xx, rdai, xx) 86 * [mod] => [mod] => [mod] => ... 87 * 88 * rsnd_dai_call(xxx, fn ) 89 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... 90 * 91 */ 92 93 /* 94 * you can enable below define if you don't need 95 * DAI status debug message when debugging 96 * see rsnd_dbg_dai_call() 97 * 98 * #define RSND_DEBUG_NO_DAI_CALL 1 99 */ 100 101 #include <linux/pm_runtime.h> 102 #include "rsnd.h" 103 104 #define RSND_RATES SNDRV_PCM_RATE_8000_192000 105 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S8 |\ 106 SNDRV_PCM_FMTBIT_S16_LE |\ 107 SNDRV_PCM_FMTBIT_S24_LE) 108 109 static const struct of_device_id rsnd_of_match[] = { 110 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 }, 111 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 }, 112 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 }, 113 /* Special Handling */ 114 { .compatible = "renesas,rcar_sound-r8a77990", .data = (void *)(RSND_GEN3 | RSND_SOC_E) }, 115 {}, 116 }; 117 MODULE_DEVICE_TABLE(of, rsnd_of_match); 118 119 /* 120 * rsnd_mod functions 121 */ 122 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 123 { 124 if (mod->type != type) { 125 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 126 struct device *dev = rsnd_priv_to_dev(priv); 127 128 dev_warn(dev, "%s is not your expected module\n", 129 rsnd_mod_name(mod)); 130 } 131 } 132 133 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 134 struct rsnd_mod *mod) 135 { 136 if (!mod || !mod->ops || !mod->ops->dma_req) 137 return NULL; 138 139 return mod->ops->dma_req(io, mod); 140 } 141 142 #define MOD_NAME_NUM 5 143 #define MOD_NAME_SIZE 16 144 char *rsnd_mod_name(struct rsnd_mod *mod) 145 { 146 static char names[MOD_NAME_NUM][MOD_NAME_SIZE]; 147 static int num; 148 char *name = names[num]; 149 150 num++; 151 if (num >= MOD_NAME_NUM) 152 num = 0; 153 154 /* 155 * Let's use same char to avoid pointlessness memory 156 * Thus, rsnd_mod_name() should be used immediately 157 * Don't keep pointer 158 */ 159 if ((mod)->ops->id_sub) { 160 snprintf(name, MOD_NAME_SIZE, "%s[%d%d]", 161 mod->ops->name, 162 rsnd_mod_id(mod), 163 rsnd_mod_id_sub(mod)); 164 } else { 165 snprintf(name, MOD_NAME_SIZE, "%s[%d]", 166 mod->ops->name, 167 rsnd_mod_id(mod)); 168 } 169 170 return name; 171 } 172 173 u32 *rsnd_mod_get_status(struct rsnd_mod *mod, 174 struct rsnd_dai_stream *io, 175 enum rsnd_mod_type type) 176 { 177 return &mod->status; 178 } 179 180 int rsnd_mod_id_raw(struct rsnd_mod *mod) 181 { 182 return mod->id; 183 } 184 185 int rsnd_mod_id(struct rsnd_mod *mod) 186 { 187 if ((mod)->ops->id) 188 return (mod)->ops->id(mod); 189 190 return rsnd_mod_id_raw(mod); 191 } 192 193 int rsnd_mod_id_sub(struct rsnd_mod *mod) 194 { 195 if ((mod)->ops->id_sub) 196 return (mod)->ops->id_sub(mod); 197 198 return 0; 199 } 200 201 int rsnd_mod_init(struct rsnd_priv *priv, 202 struct rsnd_mod *mod, 203 struct rsnd_mod_ops *ops, 204 struct clk *clk, 205 enum rsnd_mod_type type, 206 int id) 207 { 208 int ret = clk_prepare(clk); 209 210 if (ret) 211 return ret; 212 213 mod->id = id; 214 mod->ops = ops; 215 mod->type = type; 216 mod->clk = clk; 217 mod->priv = priv; 218 219 return ret; 220 } 221 222 void rsnd_mod_quit(struct rsnd_mod *mod) 223 { 224 clk_unprepare(mod->clk); 225 mod->clk = NULL; 226 } 227 228 void rsnd_mod_interrupt(struct rsnd_mod *mod, 229 void (*callback)(struct rsnd_mod *mod, 230 struct rsnd_dai_stream *io)) 231 { 232 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 233 struct rsnd_dai_stream *io; 234 struct rsnd_dai *rdai; 235 int i; 236 237 for_each_rsnd_dai(rdai, priv, i) { 238 io = &rdai->playback; 239 if (mod == io->mod[mod->type]) 240 callback(mod, io); 241 242 io = &rdai->capture; 243 if (mod == io->mod[mod->type]) 244 callback(mod, io); 245 } 246 } 247 248 int rsnd_io_is_working(struct rsnd_dai_stream *io) 249 { 250 /* see rsnd_dai_stream_init/quit() */ 251 if (io->substream) 252 return snd_pcm_running(io->substream); 253 254 return 0; 255 } 256 257 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io, 258 struct snd_pcm_hw_params *params) 259 { 260 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 261 262 /* 263 * params will be added when refine 264 * see 265 * __rsnd_soc_hw_rule_rate() 266 * __rsnd_soc_hw_rule_channels() 267 */ 268 if (params) 269 return params_channels(params); 270 else 271 return runtime->channels; 272 } 273 274 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io, 275 struct snd_pcm_hw_params *params) 276 { 277 int chan = rsnd_runtime_channel_original_with_params(io, params); 278 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 279 280 if (ctu_mod) { 281 u32 converted_chan = rsnd_io_converted_chan(io); 282 283 /* 284 * !! Note !! 285 * 286 * converted_chan will be used for CTU, 287 * or TDM Split mode. 288 * User shouldn't use CTU with TDM Split mode. 289 */ 290 if (rsnd_runtime_is_tdm_split(io)) { 291 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); 292 293 dev_err(dev, "CTU and TDM Split should be used\n"); 294 } 295 296 if (converted_chan) 297 return converted_chan; 298 } 299 300 return chan; 301 } 302 303 int rsnd_channel_normalization(int chan) 304 { 305 if ((chan > 8) || (chan < 0)) 306 return 0; 307 308 /* TDM Extend Mode needs 8ch */ 309 if (chan == 6) 310 chan = 8; 311 312 return chan; 313 } 314 315 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io, 316 struct snd_pcm_hw_params *params) 317 { 318 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 319 int chan = rsnd_io_is_play(io) ? 320 rsnd_runtime_channel_after_ctu_with_params(io, params) : 321 rsnd_runtime_channel_original_with_params(io, params); 322 323 /* Use Multi SSI */ 324 if (rsnd_runtime_is_multi_ssi(io)) 325 chan /= rsnd_rdai_ssi_lane_get(rdai); 326 327 return rsnd_channel_normalization(chan); 328 } 329 330 int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io) 331 { 332 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 333 int lane = rsnd_rdai_ssi_lane_get(rdai); 334 int chan = rsnd_io_is_play(io) ? 335 rsnd_runtime_channel_after_ctu(io) : 336 rsnd_runtime_channel_original(io); 337 338 return (chan > 2) && (lane > 1); 339 } 340 341 int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io) 342 { 343 return rsnd_runtime_channel_for_ssi(io) >= 6; 344 } 345 346 int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io) 347 { 348 return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT); 349 } 350 351 /* 352 * ADINR function 353 */ 354 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 355 { 356 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 357 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 358 struct device *dev = rsnd_priv_to_dev(priv); 359 360 switch (snd_pcm_format_width(runtime->format)) { 361 case 8: 362 return 16 << 16; 363 case 16: 364 return 8 << 16; 365 case 24: 366 return 0 << 16; 367 } 368 369 dev_warn(dev, "not supported sample bits\n"); 370 371 return 0; 372 } 373 374 /* 375 * DALIGN function 376 */ 377 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 378 { 379 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); 380 struct rsnd_mod *target; 381 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 382 383 /* 384 * *Hardware* L/R and *Software* L/R are inverted for 16bit data. 385 * 31..16 15...0 386 * HW: [L ch] [R ch] 387 * SW: [R ch] [L ch] 388 * We need to care about inversion timing to control 389 * Playback/Capture correctly. 390 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R 391 * 392 * sL/R : software L/R 393 * hL/R : hardware L/R 394 * (*) : conversion timing 395 * 396 * Playback 397 * sL/R (*) hL/R hL/R hL/R hL/R hL/R 398 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec 399 * 400 * Capture 401 * hL/R hL/R hL/R hL/R hL/R (*) sL/R 402 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM] 403 */ 404 if (rsnd_io_is_play(io)) { 405 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 406 407 target = src ? src : ssiu; 408 } else { 409 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 410 411 target = cmd ? cmd : ssiu; 412 } 413 414 /* Non target mod or non 16bit needs normal DALIGN */ 415 if ((snd_pcm_format_width(runtime->format) != 16) || 416 (mod != target)) 417 return 0x76543210; 418 /* Target mod needs inverted DALIGN when 16bit */ 419 else 420 return 0x67452301; 421 } 422 423 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod) 424 { 425 enum rsnd_mod_type playback_mods[] = { 426 RSND_MOD_SRC, 427 RSND_MOD_CMD, 428 RSND_MOD_SSIU, 429 }; 430 enum rsnd_mod_type capture_mods[] = { 431 RSND_MOD_CMD, 432 RSND_MOD_SRC, 433 RSND_MOD_SSIU, 434 }; 435 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 436 struct rsnd_mod *tmod = NULL; 437 enum rsnd_mod_type *mods = 438 rsnd_io_is_play(io) ? 439 playback_mods : capture_mods; 440 int i; 441 442 /* 443 * This is needed for 24bit data 444 * We need to shift 8bit 445 * 446 * Linux 24bit data is located as 0x00****** 447 * HW 24bit data is located as 0x******00 448 * 449 */ 450 if (snd_pcm_format_width(runtime->format) != 24) 451 return 0; 452 453 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) { 454 tmod = rsnd_io_to_mod(io, mods[i]); 455 if (tmod) 456 break; 457 } 458 459 if (tmod != mod) 460 return 0; 461 462 if (rsnd_io_is_play(io)) 463 return (0 << 20) | /* shift to Left */ 464 (8 << 16); /* 8bit */ 465 else 466 return (1 << 20) | /* shift to Right */ 467 (8 << 16); /* 8bit */ 468 } 469 470 /* 471 * rsnd_dai functions 472 */ 473 struct rsnd_mod *rsnd_mod_next(int *iterator, 474 struct rsnd_dai_stream *io, 475 enum rsnd_mod_type *array, 476 int array_size) 477 { 478 struct rsnd_mod *mod; 479 enum rsnd_mod_type type; 480 int max = array ? array_size : RSND_MOD_MAX; 481 482 for (; *iterator < max; (*iterator)++) { 483 type = (array) ? array[*iterator] : *iterator; 484 mod = rsnd_io_to_mod(io, type); 485 if (mod) 486 return mod; 487 } 488 489 return NULL; 490 } 491 492 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 493 { 494 /* CAPTURE */ 495 RSND_MOD_AUDMAPP, 496 RSND_MOD_AUDMA, 497 RSND_MOD_DVC, 498 RSND_MOD_MIX, 499 RSND_MOD_CTU, 500 RSND_MOD_CMD, 501 RSND_MOD_SRC, 502 RSND_MOD_SSIU, 503 RSND_MOD_SSIM3, 504 RSND_MOD_SSIM2, 505 RSND_MOD_SSIM1, 506 RSND_MOD_SSIP, 507 RSND_MOD_SSI, 508 }, { 509 /* PLAYBACK */ 510 RSND_MOD_AUDMAPP, 511 RSND_MOD_AUDMA, 512 RSND_MOD_SSIM3, 513 RSND_MOD_SSIM2, 514 RSND_MOD_SSIM1, 515 RSND_MOD_SSIP, 516 RSND_MOD_SSI, 517 RSND_MOD_SSIU, 518 RSND_MOD_DVC, 519 RSND_MOD_MIX, 520 RSND_MOD_CTU, 521 RSND_MOD_CMD, 522 RSND_MOD_SRC, 523 }, 524 }; 525 526 static int rsnd_status_update(u32 *status, 527 int shift, int add, int timing) 528 { 529 u32 mask = 0xF << shift; 530 u8 val = (*status >> shift) & 0xF; 531 u8 next_val = (val + add) & 0xF; 532 int func_call = (val == timing); 533 534 if (next_val == 0xF) /* underflow case */ 535 func_call = 0; 536 else 537 *status = (*status & ~mask) + (next_val << shift); 538 539 return func_call; 540 } 541 542 #define rsnd_dai_call(fn, io, param...) \ 543 ({ \ 544 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \ 545 struct rsnd_mod *mod; \ 546 int is_play = rsnd_io_is_play(io); \ 547 int ret = 0, i; \ 548 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 549 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 550 int tmp = 0; \ 551 u32 *status = mod->ops->get_status(mod, io, types[i]); \ 552 int func_call = rsnd_status_update(status, \ 553 __rsnd_mod_shift_##fn, \ 554 __rsnd_mod_add_##fn, \ 555 __rsnd_mod_call_##fn); \ 556 rsnd_dbg_dai_call(dev, "%s\t0x%08x %s\n", \ 557 rsnd_mod_name(mod), *status, \ 558 (func_call && (mod)->ops->fn) ? #fn : ""); \ 559 if (func_call && (mod)->ops->fn) \ 560 tmp = (mod)->ops->fn(mod, io, param); \ 561 if (tmp && (tmp != -EPROBE_DEFER)) \ 562 dev_err(dev, "%s : %s error %d\n", \ 563 rsnd_mod_name(mod), #fn, tmp); \ 564 ret |= tmp; \ 565 } \ 566 ret; \ 567 }) 568 569 int rsnd_dai_connect(struct rsnd_mod *mod, 570 struct rsnd_dai_stream *io, 571 enum rsnd_mod_type type) 572 { 573 struct rsnd_priv *priv; 574 struct device *dev; 575 576 if (!mod) 577 return -EIO; 578 579 if (io->mod[type] == mod) 580 return 0; 581 582 if (io->mod[type]) 583 return -EINVAL; 584 585 priv = rsnd_mod_to_priv(mod); 586 dev = rsnd_priv_to_dev(priv); 587 588 io->mod[type] = mod; 589 590 dev_dbg(dev, "%s is connected to io (%s)\n", 591 rsnd_mod_name(mod), 592 rsnd_io_is_play(io) ? "Playback" : "Capture"); 593 594 return 0; 595 } 596 597 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 598 struct rsnd_dai_stream *io, 599 enum rsnd_mod_type type) 600 { 601 io->mod[type] = NULL; 602 } 603 604 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai, 605 int max_channels) 606 { 607 if (max_channels > 0) 608 rdai->max_channels = max_channels; 609 610 return rdai->max_channels; 611 } 612 613 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai, 614 int ssi_lane) 615 { 616 if (ssi_lane > 0) 617 rdai->ssi_lane = ssi_lane; 618 619 return rdai->ssi_lane; 620 } 621 622 int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width) 623 { 624 if (width > 0) 625 rdai->chan_width = width; 626 627 return rdai->chan_width; 628 } 629 630 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 631 { 632 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 633 return NULL; 634 635 return priv->rdai + id; 636 } 637 638 static struct snd_soc_dai_driver 639 *rsnd_daidrv_get(struct rsnd_priv *priv, int id) 640 { 641 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 642 return NULL; 643 644 return priv->daidrv + id; 645 } 646 647 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 648 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 649 { 650 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 651 652 return rsnd_rdai_get(priv, dai->id); 653 } 654 655 /* 656 * rsnd_soc_dai functions 657 */ 658 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 659 { 660 struct snd_pcm_substream *substream = io->substream; 661 662 /* 663 * this function should be called... 664 * 665 * - if rsnd_dai_pointer_update() returns true 666 * - without spin lock 667 */ 668 669 snd_pcm_period_elapsed(substream); 670 } 671 672 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 673 struct snd_pcm_substream *substream) 674 { 675 io->substream = substream; 676 } 677 678 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 679 { 680 io->substream = NULL; 681 } 682 683 static 684 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 685 { 686 struct snd_soc_pcm_runtime *rtd = substream->private_data; 687 688 return rtd->cpu_dai; 689 } 690 691 static 692 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 693 struct snd_pcm_substream *substream) 694 { 695 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 696 return &rdai->playback; 697 else 698 return &rdai->capture; 699 } 700 701 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 702 struct snd_soc_dai *dai) 703 { 704 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 705 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 706 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 707 int ret; 708 unsigned long flags; 709 710 spin_lock_irqsave(&priv->lock, flags); 711 712 switch (cmd) { 713 case SNDRV_PCM_TRIGGER_START: 714 case SNDRV_PCM_TRIGGER_RESUME: 715 ret = rsnd_dai_call(init, io, priv); 716 if (ret < 0) 717 goto dai_trigger_end; 718 719 ret = rsnd_dai_call(start, io, priv); 720 if (ret < 0) 721 goto dai_trigger_end; 722 723 ret = rsnd_dai_call(irq, io, priv, 1); 724 if (ret < 0) 725 goto dai_trigger_end; 726 727 break; 728 case SNDRV_PCM_TRIGGER_STOP: 729 case SNDRV_PCM_TRIGGER_SUSPEND: 730 ret = rsnd_dai_call(irq, io, priv, 0); 731 732 ret |= rsnd_dai_call(stop, io, priv); 733 734 ret |= rsnd_dai_call(quit, io, priv); 735 736 break; 737 default: 738 ret = -EINVAL; 739 } 740 741 dai_trigger_end: 742 spin_unlock_irqrestore(&priv->lock, flags); 743 744 return ret; 745 } 746 747 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 748 { 749 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 750 751 /* set master/slave audio interface */ 752 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 753 case SND_SOC_DAIFMT_CBM_CFM: 754 rdai->clk_master = 0; 755 break; 756 case SND_SOC_DAIFMT_CBS_CFS: 757 rdai->clk_master = 1; /* codec is slave, cpu is master */ 758 break; 759 default: 760 return -EINVAL; 761 } 762 763 /* set format */ 764 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 765 case SND_SOC_DAIFMT_I2S: 766 rdai->sys_delay = 0; 767 rdai->data_alignment = 0; 768 rdai->frm_clk_inv = 0; 769 break; 770 case SND_SOC_DAIFMT_LEFT_J: 771 case SND_SOC_DAIFMT_DSP_B: 772 rdai->sys_delay = 1; 773 rdai->data_alignment = 0; 774 rdai->frm_clk_inv = 1; 775 break; 776 case SND_SOC_DAIFMT_RIGHT_J: 777 rdai->sys_delay = 1; 778 rdai->data_alignment = 1; 779 rdai->frm_clk_inv = 1; 780 break; 781 case SND_SOC_DAIFMT_DSP_A: 782 rdai->sys_delay = 0; 783 rdai->data_alignment = 0; 784 rdai->frm_clk_inv = 1; 785 break; 786 } 787 788 /* set clock inversion */ 789 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 790 case SND_SOC_DAIFMT_NB_IF: 791 rdai->frm_clk_inv = !rdai->frm_clk_inv; 792 break; 793 case SND_SOC_DAIFMT_IB_NF: 794 rdai->bit_clk_inv = !rdai->bit_clk_inv; 795 break; 796 case SND_SOC_DAIFMT_IB_IF: 797 rdai->bit_clk_inv = !rdai->bit_clk_inv; 798 rdai->frm_clk_inv = !rdai->frm_clk_inv; 799 break; 800 case SND_SOC_DAIFMT_NB_NF: 801 default: 802 break; 803 } 804 805 return 0; 806 } 807 808 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 809 u32 tx_mask, u32 rx_mask, 810 int slots, int slot_width) 811 { 812 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 813 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 814 struct device *dev = rsnd_priv_to_dev(priv); 815 816 switch (slot_width) { 817 case 16: 818 case 24: 819 case 32: 820 break; 821 default: 822 /* use default */ 823 slot_width = 32; 824 } 825 826 switch (slots) { 827 case 2: 828 /* TDM Split Mode */ 829 case 6: 830 case 8: 831 /* TDM Extend Mode */ 832 rsnd_rdai_channels_set(rdai, slots); 833 rsnd_rdai_ssi_lane_set(rdai, 1); 834 rsnd_rdai_width_set(rdai, slot_width); 835 break; 836 default: 837 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 838 return -EINVAL; 839 } 840 841 return 0; 842 } 843 844 static unsigned int rsnd_soc_hw_channels_list[] = { 845 2, 6, 8, 846 }; 847 848 static unsigned int rsnd_soc_hw_rate_list[] = { 849 8000, 850 11025, 851 16000, 852 22050, 853 32000, 854 44100, 855 48000, 856 64000, 857 88200, 858 96000, 859 176400, 860 192000, 861 }; 862 863 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai, 864 unsigned int *list, int list_num, 865 struct snd_interval *baseline, struct snd_interval *iv) 866 { 867 struct snd_interval p; 868 unsigned int rate; 869 int i; 870 871 snd_interval_any(&p); 872 p.min = UINT_MAX; 873 p.max = 0; 874 875 for (i = 0; i < list_num; i++) { 876 877 if (!snd_interval_test(iv, list[i])) 878 continue; 879 880 rate = rsnd_ssi_clk_query(rdai, 881 baseline->min, list[i], NULL); 882 if (rate > 0) { 883 p.min = min(p.min, list[i]); 884 p.max = max(p.max, list[i]); 885 } 886 887 rate = rsnd_ssi_clk_query(rdai, 888 baseline->max, list[i], NULL); 889 if (rate > 0) { 890 p.min = min(p.min, list[i]); 891 p.max = max(p.max, list[i]); 892 } 893 } 894 895 return snd_interval_refine(iv, &p); 896 } 897 898 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params, 899 struct snd_pcm_hw_rule *rule) 900 { 901 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 902 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 903 struct snd_interval ic; 904 struct rsnd_dai_stream *io = rule->private; 905 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 906 907 /* 908 * possible sampling rate limitation is same as 909 * 2ch if it supports multi ssi 910 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 911 */ 912 ic = *ic_; 913 ic.min = 914 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 915 916 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list, 917 ARRAY_SIZE(rsnd_soc_hw_rate_list), 918 &ic, ir); 919 } 920 921 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params, 922 struct snd_pcm_hw_rule *rule) 923 { 924 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 925 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 926 struct snd_interval ic; 927 struct rsnd_dai_stream *io = rule->private; 928 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 929 930 /* 931 * possible sampling rate limitation is same as 932 * 2ch if it supports multi ssi 933 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 934 */ 935 ic = *ic_; 936 ic.min = 937 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 938 939 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list, 940 ARRAY_SIZE(rsnd_soc_hw_channels_list), 941 ir, &ic); 942 } 943 944 static const struct snd_pcm_hardware rsnd_pcm_hardware = { 945 .info = SNDRV_PCM_INFO_INTERLEAVED | 946 SNDRV_PCM_INFO_MMAP | 947 SNDRV_PCM_INFO_MMAP_VALID, 948 .buffer_bytes_max = 64 * 1024, 949 .period_bytes_min = 32, 950 .period_bytes_max = 8192, 951 .periods_min = 1, 952 .periods_max = 32, 953 .fifo_size = 256, 954 }; 955 956 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 957 struct snd_soc_dai *dai) 958 { 959 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 960 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 961 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint; 962 struct snd_pcm_runtime *runtime = substream->runtime; 963 unsigned int max_channels = rsnd_rdai_channels_get(rdai); 964 int i; 965 966 rsnd_dai_stream_init(io, substream); 967 968 /* 969 * Channel Limitation 970 * It depends on Platform design 971 */ 972 constraint->list = rsnd_soc_hw_channels_list; 973 constraint->count = 0; 974 constraint->mask = 0; 975 976 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) { 977 if (rsnd_soc_hw_channels_list[i] > max_channels) 978 break; 979 constraint->count = i + 1; 980 } 981 982 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 983 984 snd_pcm_hw_constraint_list(runtime, 0, 985 SNDRV_PCM_HW_PARAM_CHANNELS, constraint); 986 987 snd_pcm_hw_constraint_integer(runtime, 988 SNDRV_PCM_HW_PARAM_PERIODS); 989 990 /* 991 * Sampling Rate / Channel Limitation 992 * It depends on Clock Master Mode 993 */ 994 if (rsnd_rdai_is_clk_master(rdai)) { 995 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 996 997 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 998 rsnd_soc_hw_rule_rate, 999 is_play ? &rdai->playback : &rdai->capture, 1000 SNDRV_PCM_HW_PARAM_CHANNELS, -1); 1001 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 1002 rsnd_soc_hw_rule_channels, 1003 is_play ? &rdai->playback : &rdai->capture, 1004 SNDRV_PCM_HW_PARAM_RATE, -1); 1005 } 1006 1007 return 0; 1008 } 1009 1010 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 1011 struct snd_soc_dai *dai) 1012 { 1013 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1014 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 1015 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1016 1017 /* 1018 * call rsnd_dai_call without spinlock 1019 */ 1020 rsnd_dai_call(cleanup, io, priv); 1021 1022 rsnd_dai_stream_quit(io); 1023 } 1024 1025 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream, 1026 struct snd_soc_dai *dai) 1027 { 1028 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 1029 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1030 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1031 1032 return rsnd_dai_call(prepare, io, priv); 1033 } 1034 1035 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 1036 .startup = rsnd_soc_dai_startup, 1037 .shutdown = rsnd_soc_dai_shutdown, 1038 .trigger = rsnd_soc_dai_trigger, 1039 .set_fmt = rsnd_soc_dai_set_fmt, 1040 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 1041 .prepare = rsnd_soc_dai_prepare, 1042 }; 1043 1044 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv, 1045 struct rsnd_dai_stream *io, 1046 struct device_node *dai_np) 1047 { 1048 struct device *dev = rsnd_priv_to_dev(priv); 1049 struct device_node *ssiu_np = rsnd_ssiu_of_node(priv); 1050 struct device_node *np; 1051 int is_play = rsnd_io_is_play(io); 1052 int i, j; 1053 1054 if (!ssiu_np) 1055 return; 1056 1057 /* 1058 * This driver assumes that it is TDM Split mode 1059 * if it includes ssiu node 1060 */ 1061 for (i = 0;; i++) { 1062 struct device_node *node = is_play ? 1063 of_parse_phandle(dai_np, "playback", i) : 1064 of_parse_phandle(dai_np, "capture", i); 1065 1066 if (!node) 1067 break; 1068 1069 j = 0; 1070 for_each_child_of_node(ssiu_np, np) { 1071 if (np == node) { 1072 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT); 1073 dev_dbg(dev, "%s is part of TDM Split\n", io->name); 1074 } 1075 j++; 1076 } 1077 1078 } 1079 } 1080 1081 static void rsnd_parse_connect_simple(struct rsnd_priv *priv, 1082 struct rsnd_dai_stream *io, 1083 struct device_node *dai_np) 1084 { 1085 if (!rsnd_io_to_mod_ssi(io)) 1086 return; 1087 1088 rsnd_parse_tdm_split_mode(priv, io, dai_np); 1089 } 1090 1091 static void rsnd_parse_connect_graph(struct rsnd_priv *priv, 1092 struct rsnd_dai_stream *io, 1093 struct device_node *endpoint) 1094 { 1095 struct device *dev = rsnd_priv_to_dev(priv); 1096 struct device_node *remote_node = of_graph_get_remote_port_parent(endpoint); 1097 1098 if (!rsnd_io_to_mod_ssi(io)) 1099 return; 1100 1101 /* HDMI0 */ 1102 if (strstr(remote_node->full_name, "hdmi@fead0000")) { 1103 rsnd_flags_set(io, RSND_STREAM_HDMI0); 1104 dev_dbg(dev, "%s connected to HDMI0\n", io->name); 1105 } 1106 1107 /* HDMI1 */ 1108 if (strstr(remote_node->full_name, "hdmi@feae0000")) { 1109 rsnd_flags_set(io, RSND_STREAM_HDMI1); 1110 dev_dbg(dev, "%s connected to HDMI1\n", io->name); 1111 } 1112 1113 rsnd_parse_tdm_split_mode(priv, io, endpoint); 1114 } 1115 1116 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 1117 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 1118 struct device_node *node, 1119 struct device_node *playback, 1120 struct device_node *capture) 1121 { 1122 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 1123 struct device_node *np; 1124 struct rsnd_mod *mod; 1125 int i; 1126 1127 if (!node) 1128 return; 1129 1130 i = 0; 1131 for_each_child_of_node(node, np) { 1132 mod = mod_get(priv, i); 1133 if (np == playback) 1134 rsnd_dai_connect(mod, &rdai->playback, mod->type); 1135 if (np == capture) 1136 rsnd_dai_connect(mod, &rdai->capture, mod->type); 1137 i++; 1138 } 1139 1140 of_node_put(node); 1141 } 1142 1143 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv, 1144 int *is_graph) 1145 { 1146 struct device *dev = rsnd_priv_to_dev(priv); 1147 struct device_node *np = dev->of_node; 1148 struct device_node *dai_node; 1149 struct device_node *ret; 1150 1151 *is_graph = 0; 1152 1153 /* 1154 * parse both previous dai (= rcar_sound,dai), and 1155 * graph dai (= ports/port) 1156 */ 1157 dai_node = of_get_child_by_name(np, RSND_NODE_DAI); 1158 if (dai_node) { 1159 ret = dai_node; 1160 goto of_node_compatible; 1161 } 1162 1163 ret = np; 1164 1165 dai_node = of_graph_get_next_endpoint(np, NULL); 1166 if (dai_node) 1167 goto of_node_graph; 1168 1169 return NULL; 1170 1171 of_node_graph: 1172 *is_graph = 1; 1173 of_node_compatible: 1174 of_node_put(dai_node); 1175 1176 return ret; 1177 } 1178 1179 1180 #define PREALLOC_BUFFER (32 * 1024) 1181 #define PREALLOC_BUFFER_MAX (32 * 1024) 1182 1183 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd, 1184 struct rsnd_dai_stream *io, 1185 int stream) 1186 { 1187 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1188 struct device *dev = rsnd_priv_to_dev(priv); 1189 struct snd_pcm_substream *substream; 1190 1191 /* 1192 * use Audio-DMAC dev if we can use IPMMU 1193 * see 1194 * rsnd_dmaen_attach() 1195 */ 1196 if (io->dmac_dev) 1197 dev = io->dmac_dev; 1198 1199 for (substream = rtd->pcm->streams[stream].substream; 1200 substream; 1201 substream = substream->next) { 1202 snd_pcm_lib_preallocate_pages(substream, 1203 SNDRV_DMA_TYPE_DEV, 1204 dev, 1205 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1206 } 1207 1208 return 0; 1209 } 1210 1211 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd, 1212 struct snd_soc_dai *dai) 1213 { 1214 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1215 int ret; 1216 1217 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1218 if (ret) 1219 return ret; 1220 1221 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1222 if (ret) 1223 return ret; 1224 1225 ret = rsnd_preallocate_pages(rtd, &rdai->playback, 1226 SNDRV_PCM_STREAM_PLAYBACK); 1227 if (ret) 1228 return ret; 1229 1230 ret = rsnd_preallocate_pages(rtd, &rdai->capture, 1231 SNDRV_PCM_STREAM_CAPTURE); 1232 if (ret) 1233 return ret; 1234 1235 return 0; 1236 } 1237 1238 static void __rsnd_dai_probe(struct rsnd_priv *priv, 1239 struct device_node *dai_np, 1240 int dai_i) 1241 { 1242 struct device_node *playback, *capture; 1243 struct rsnd_dai_stream *io_playback; 1244 struct rsnd_dai_stream *io_capture; 1245 struct snd_soc_dai_driver *drv; 1246 struct rsnd_dai *rdai; 1247 struct device *dev = rsnd_priv_to_dev(priv); 1248 int io_i; 1249 1250 rdai = rsnd_rdai_get(priv, dai_i); 1251 drv = rsnd_daidrv_get(priv, dai_i); 1252 io_playback = &rdai->playback; 1253 io_capture = &rdai->capture; 1254 1255 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 1256 1257 rdai->priv = priv; 1258 drv->name = rdai->name; 1259 drv->ops = &rsnd_soc_dai_ops; 1260 drv->pcm_new = rsnd_pcm_new; 1261 1262 snprintf(io_playback->name, RSND_DAI_NAME_SIZE, 1263 "DAI%d Playback", dai_i); 1264 drv->playback.rates = RSND_RATES; 1265 drv->playback.formats = RSND_FMTS; 1266 drv->playback.channels_min = 2; 1267 drv->playback.channels_max = 8; 1268 drv->playback.stream_name = io_playback->name; 1269 1270 snprintf(io_capture->name, RSND_DAI_NAME_SIZE, 1271 "DAI%d Capture", dai_i); 1272 drv->capture.rates = RSND_RATES; 1273 drv->capture.formats = RSND_FMTS; 1274 drv->capture.channels_min = 2; 1275 drv->capture.channels_max = 8; 1276 drv->capture.stream_name = io_capture->name; 1277 1278 io_playback->rdai = rdai; 1279 io_capture->rdai = rdai; 1280 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */ 1281 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */ 1282 rsnd_rdai_width_set(rdai, 32); /* default 32bit width */ 1283 1284 for (io_i = 0;; io_i++) { 1285 playback = of_parse_phandle(dai_np, "playback", io_i); 1286 capture = of_parse_phandle(dai_np, "capture", io_i); 1287 1288 if (!playback && !capture) 1289 break; 1290 1291 rsnd_parse_connect_ssi(rdai, playback, capture); 1292 rsnd_parse_connect_ssiu(rdai, playback, capture); 1293 rsnd_parse_connect_src(rdai, playback, capture); 1294 rsnd_parse_connect_ctu(rdai, playback, capture); 1295 rsnd_parse_connect_mix(rdai, playback, capture); 1296 rsnd_parse_connect_dvc(rdai, playback, capture); 1297 1298 of_node_put(playback); 1299 of_node_put(capture); 1300 } 1301 1302 if (rsnd_ssi_is_pin_sharing(io_capture) || 1303 rsnd_ssi_is_pin_sharing(io_playback)) { 1304 /* should have symmetric_rates if pin sharing */ 1305 drv->symmetric_rates = 1; 1306 } 1307 1308 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 1309 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 1310 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 1311 } 1312 1313 static int rsnd_dai_probe(struct rsnd_priv *priv) 1314 { 1315 struct device_node *dai_node; 1316 struct device_node *dai_np; 1317 struct snd_soc_dai_driver *rdrv; 1318 struct device *dev = rsnd_priv_to_dev(priv); 1319 struct rsnd_dai *rdai; 1320 int nr; 1321 int is_graph; 1322 int dai_i; 1323 1324 dai_node = rsnd_dai_of_node(priv, &is_graph); 1325 if (is_graph) 1326 nr = of_graph_get_endpoint_count(dai_node); 1327 else 1328 nr = of_get_child_count(dai_node); 1329 1330 if (!nr) 1331 return -EINVAL; 1332 1333 rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL); 1334 rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL); 1335 if (!rdrv || !rdai) 1336 return -ENOMEM; 1337 1338 priv->rdai_nr = nr; 1339 priv->daidrv = rdrv; 1340 priv->rdai = rdai; 1341 1342 /* 1343 * parse all dai 1344 */ 1345 dai_i = 0; 1346 if (is_graph) { 1347 for_each_endpoint_of_node(dai_node, dai_np) { 1348 __rsnd_dai_probe(priv, dai_np, dai_i); 1349 if (rsnd_is_gen3(priv)) { 1350 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i); 1351 1352 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np); 1353 rsnd_parse_connect_graph(priv, &rdai->capture, dai_np); 1354 } 1355 dai_i++; 1356 } 1357 } else { 1358 for_each_child_of_node(dai_node, dai_np) { 1359 __rsnd_dai_probe(priv, dai_np, dai_i); 1360 if (rsnd_is_gen3(priv)) { 1361 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i); 1362 1363 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np); 1364 rsnd_parse_connect_simple(priv, &rdai->capture, dai_np); 1365 } 1366 dai_i++; 1367 } 1368 } 1369 1370 return 0; 1371 } 1372 1373 /* 1374 * pcm ops 1375 */ 1376 static int rsnd_hw_params(struct snd_pcm_substream *substream, 1377 struct snd_pcm_hw_params *hw_params) 1378 { 1379 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1380 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1381 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1382 struct snd_soc_pcm_runtime *fe = substream->private_data; 1383 int ret; 1384 1385 /* 1386 * rsnd assumes that it might be used under DPCM if user want to use 1387 * channel / rate convert. Then, rsnd should be FE. 1388 * And then, this function will be called *after* BE settings. 1389 * this means, each BE already has fixuped hw_params. 1390 * see 1391 * dpcm_fe_dai_hw_params() 1392 * dpcm_be_dai_hw_params() 1393 */ 1394 io->converted_rate = 0; 1395 io->converted_chan = 0; 1396 if (fe->dai_link->dynamic) { 1397 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1398 struct device *dev = rsnd_priv_to_dev(priv); 1399 struct snd_soc_dpcm *dpcm; 1400 struct snd_pcm_hw_params *be_params; 1401 int stream = substream->stream; 1402 1403 for_each_dpcm_be(fe, stream, dpcm) { 1404 be_params = &dpcm->hw_params; 1405 if (params_channels(hw_params) != params_channels(be_params)) 1406 io->converted_chan = params_channels(be_params); 1407 if (params_rate(hw_params) != params_rate(be_params)) 1408 io->converted_rate = params_rate(be_params); 1409 } 1410 if (io->converted_chan) 1411 dev_dbg(dev, "convert channels = %d\n", io->converted_chan); 1412 if (io->converted_rate) 1413 dev_dbg(dev, "convert rate = %d\n", io->converted_rate); 1414 } 1415 1416 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 1417 if (ret) 1418 return ret; 1419 1420 return snd_pcm_lib_malloc_pages(substream, 1421 params_buffer_bytes(hw_params)); 1422 } 1423 1424 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 1425 { 1426 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1427 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1428 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1429 snd_pcm_uframes_t pointer = 0; 1430 1431 rsnd_dai_call(pointer, io, &pointer); 1432 1433 return pointer; 1434 } 1435 1436 static const struct snd_pcm_ops rsnd_pcm_ops = { 1437 .ioctl = snd_pcm_lib_ioctl, 1438 .hw_params = rsnd_hw_params, 1439 .hw_free = snd_pcm_lib_free_pages, 1440 .pointer = rsnd_pointer, 1441 }; 1442 1443 /* 1444 * snd_kcontrol 1445 */ 1446 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 1447 struct snd_ctl_elem_info *uinfo) 1448 { 1449 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1450 1451 if (cfg->texts) { 1452 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 1453 uinfo->count = cfg->size; 1454 uinfo->value.enumerated.items = cfg->max; 1455 if (uinfo->value.enumerated.item >= cfg->max) 1456 uinfo->value.enumerated.item = cfg->max - 1; 1457 strlcpy(uinfo->value.enumerated.name, 1458 cfg->texts[uinfo->value.enumerated.item], 1459 sizeof(uinfo->value.enumerated.name)); 1460 } else { 1461 uinfo->count = cfg->size; 1462 uinfo->value.integer.min = 0; 1463 uinfo->value.integer.max = cfg->max; 1464 uinfo->type = (cfg->max == 1) ? 1465 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 1466 SNDRV_CTL_ELEM_TYPE_INTEGER; 1467 } 1468 1469 return 0; 1470 } 1471 1472 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 1473 struct snd_ctl_elem_value *uc) 1474 { 1475 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1476 int i; 1477 1478 for (i = 0; i < cfg->size; i++) 1479 if (cfg->texts) 1480 uc->value.enumerated.item[i] = cfg->val[i]; 1481 else 1482 uc->value.integer.value[i] = cfg->val[i]; 1483 1484 return 0; 1485 } 1486 1487 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 1488 struct snd_ctl_elem_value *uc) 1489 { 1490 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1491 int i, change = 0; 1492 1493 if (!cfg->accept(cfg->io)) 1494 return 0; 1495 1496 for (i = 0; i < cfg->size; i++) { 1497 if (cfg->texts) { 1498 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 1499 cfg->val[i] = uc->value.enumerated.item[i]; 1500 } else { 1501 change |= (uc->value.integer.value[i] != cfg->val[i]); 1502 cfg->val[i] = uc->value.integer.value[i]; 1503 } 1504 } 1505 1506 if (change && cfg->update) 1507 cfg->update(cfg->io, cfg->mod); 1508 1509 return change; 1510 } 1511 1512 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io) 1513 { 1514 return 1; 1515 } 1516 1517 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io) 1518 { 1519 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 1520 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1521 struct device *dev = rsnd_priv_to_dev(priv); 1522 1523 if (!runtime) { 1524 dev_warn(dev, "Can't update kctrl when idle\n"); 1525 return 0; 1526 } 1527 1528 return 1; 1529 } 1530 1531 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg) 1532 { 1533 cfg->cfg.val = cfg->val; 1534 1535 return &cfg->cfg; 1536 } 1537 1538 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg) 1539 { 1540 cfg->cfg.val = &cfg->val; 1541 1542 return &cfg->cfg; 1543 } 1544 1545 const char * const volume_ramp_rate[] = { 1546 "128 dB/1 step", /* 00000 */ 1547 "64 dB/1 step", /* 00001 */ 1548 "32 dB/1 step", /* 00010 */ 1549 "16 dB/1 step", /* 00011 */ 1550 "8 dB/1 step", /* 00100 */ 1551 "4 dB/1 step", /* 00101 */ 1552 "2 dB/1 step", /* 00110 */ 1553 "1 dB/1 step", /* 00111 */ 1554 "0.5 dB/1 step", /* 01000 */ 1555 "0.25 dB/1 step", /* 01001 */ 1556 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */ 1557 "0.125 dB/2 steps", /* 01011 */ 1558 "0.125 dB/4 steps", /* 01100 */ 1559 "0.125 dB/8 steps", /* 01101 */ 1560 "0.125 dB/16 steps", /* 01110 */ 1561 "0.125 dB/32 steps", /* 01111 */ 1562 "0.125 dB/64 steps", /* 10000 */ 1563 "0.125 dB/128 steps", /* 10001 */ 1564 "0.125 dB/256 steps", /* 10010 */ 1565 "0.125 dB/512 steps", /* 10011 */ 1566 "0.125 dB/1024 steps", /* 10100 */ 1567 "0.125 dB/2048 steps", /* 10101 */ 1568 "0.125 dB/4096 steps", /* 10110 */ 1569 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */ 1570 }; 1571 1572 int rsnd_kctrl_new(struct rsnd_mod *mod, 1573 struct rsnd_dai_stream *io, 1574 struct snd_soc_pcm_runtime *rtd, 1575 const unsigned char *name, 1576 int (*accept)(struct rsnd_dai_stream *io), 1577 void (*update)(struct rsnd_dai_stream *io, 1578 struct rsnd_mod *mod), 1579 struct rsnd_kctrl_cfg *cfg, 1580 const char * const *texts, 1581 int size, 1582 u32 max) 1583 { 1584 struct snd_card *card = rtd->card->snd_card; 1585 struct snd_kcontrol *kctrl; 1586 struct snd_kcontrol_new knew = { 1587 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1588 .name = name, 1589 .info = rsnd_kctrl_info, 1590 .index = rtd->num, 1591 .get = rsnd_kctrl_get, 1592 .put = rsnd_kctrl_put, 1593 }; 1594 int ret; 1595 1596 /* 1597 * 1) Avoid duplicate register for DVC with MIX case 1598 * 2) Allow duplicate register for MIX 1599 * 3) re-register if card was rebinded 1600 */ 1601 list_for_each_entry(kctrl, &card->controls, list) { 1602 struct rsnd_kctrl_cfg *c = kctrl->private_data; 1603 1604 if (c == cfg) 1605 return 0; 1606 } 1607 1608 if (size > RSND_MAX_CHANNELS) 1609 return -EINVAL; 1610 1611 kctrl = snd_ctl_new1(&knew, cfg); 1612 if (!kctrl) 1613 return -ENOMEM; 1614 1615 ret = snd_ctl_add(card, kctrl); 1616 if (ret < 0) 1617 return ret; 1618 1619 cfg->texts = texts; 1620 cfg->max = max; 1621 cfg->size = size; 1622 cfg->accept = accept; 1623 cfg->update = update; 1624 cfg->card = card; 1625 cfg->kctrl = kctrl; 1626 cfg->io = io; 1627 cfg->mod = mod; 1628 1629 return 0; 1630 } 1631 1632 /* 1633 * snd_soc_component 1634 */ 1635 static const struct snd_soc_component_driver rsnd_soc_component = { 1636 .ops = &rsnd_pcm_ops, 1637 .name = "rsnd", 1638 }; 1639 1640 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1641 struct rsnd_dai_stream *io) 1642 { 1643 int ret; 1644 1645 ret = rsnd_dai_call(probe, io, priv); 1646 if (ret == -EAGAIN) { 1647 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1648 struct rsnd_mod *mod; 1649 int i; 1650 1651 /* 1652 * Fallback to PIO mode 1653 */ 1654 1655 /* 1656 * call "remove" for SSI/SRC/DVC 1657 * SSI will be switch to PIO mode if it was DMA mode 1658 * see 1659 * rsnd_dma_init() 1660 * rsnd_ssi_fallback() 1661 */ 1662 rsnd_dai_call(remove, io, priv); 1663 1664 /* 1665 * remove all mod from io 1666 * and, re connect ssi 1667 */ 1668 for_each_rsnd_mod(i, mod, io) 1669 rsnd_dai_disconnect(mod, io, i); 1670 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1671 1672 /* 1673 * fallback 1674 */ 1675 rsnd_dai_call(fallback, io, priv); 1676 1677 /* 1678 * retry to "probe". 1679 * DAI has SSI which is PIO mode only now. 1680 */ 1681 ret = rsnd_dai_call(probe, io, priv); 1682 } 1683 1684 return ret; 1685 } 1686 1687 /* 1688 * rsnd probe 1689 */ 1690 static int rsnd_probe(struct platform_device *pdev) 1691 { 1692 struct rsnd_priv *priv; 1693 struct device *dev = &pdev->dev; 1694 struct rsnd_dai *rdai; 1695 int (*probe_func[])(struct rsnd_priv *priv) = { 1696 rsnd_gen_probe, 1697 rsnd_dma_probe, 1698 rsnd_ssi_probe, 1699 rsnd_ssiu_probe, 1700 rsnd_src_probe, 1701 rsnd_ctu_probe, 1702 rsnd_mix_probe, 1703 rsnd_dvc_probe, 1704 rsnd_cmd_probe, 1705 rsnd_adg_probe, 1706 rsnd_dai_probe, 1707 }; 1708 int ret, i; 1709 1710 /* 1711 * init priv data 1712 */ 1713 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1714 if (!priv) 1715 return -ENODEV; 1716 1717 priv->pdev = pdev; 1718 priv->flags = (unsigned long)of_device_get_match_data(dev); 1719 spin_lock_init(&priv->lock); 1720 1721 /* 1722 * init each module 1723 */ 1724 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1725 ret = probe_func[i](priv); 1726 if (ret) 1727 return ret; 1728 } 1729 1730 for_each_rsnd_dai(rdai, priv, i) { 1731 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1732 if (ret) 1733 goto exit_snd_probe; 1734 1735 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1736 if (ret) 1737 goto exit_snd_probe; 1738 } 1739 1740 dev_set_drvdata(dev, priv); 1741 1742 /* 1743 * asoc register 1744 */ 1745 ret = devm_snd_soc_register_component(dev, &rsnd_soc_component, 1746 priv->daidrv, rsnd_rdai_nr(priv)); 1747 if (ret < 0) { 1748 dev_err(dev, "cannot snd dai register\n"); 1749 goto exit_snd_probe; 1750 } 1751 1752 pm_runtime_enable(dev); 1753 1754 dev_info(dev, "probed\n"); 1755 return ret; 1756 1757 exit_snd_probe: 1758 for_each_rsnd_dai(rdai, priv, i) { 1759 rsnd_dai_call(remove, &rdai->playback, priv); 1760 rsnd_dai_call(remove, &rdai->capture, priv); 1761 } 1762 1763 /* 1764 * adg is very special mod which can't use rsnd_dai_call(remove), 1765 * and it registers ADG clock on probe. 1766 * It should be unregister if probe failed. 1767 * Mainly it is assuming -EPROBE_DEFER case 1768 */ 1769 rsnd_adg_remove(priv); 1770 1771 return ret; 1772 } 1773 1774 static int rsnd_remove(struct platform_device *pdev) 1775 { 1776 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1777 struct rsnd_dai *rdai; 1778 void (*remove_func[])(struct rsnd_priv *priv) = { 1779 rsnd_ssi_remove, 1780 rsnd_ssiu_remove, 1781 rsnd_src_remove, 1782 rsnd_ctu_remove, 1783 rsnd_mix_remove, 1784 rsnd_dvc_remove, 1785 rsnd_cmd_remove, 1786 rsnd_adg_remove, 1787 }; 1788 int ret = 0, i; 1789 1790 snd_soc_disconnect_sync(&pdev->dev); 1791 1792 pm_runtime_disable(&pdev->dev); 1793 1794 for_each_rsnd_dai(rdai, priv, i) { 1795 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1796 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1797 } 1798 1799 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1800 remove_func[i](priv); 1801 1802 return ret; 1803 } 1804 1805 static int __maybe_unused rsnd_suspend(struct device *dev) 1806 { 1807 struct rsnd_priv *priv = dev_get_drvdata(dev); 1808 1809 rsnd_adg_clk_disable(priv); 1810 1811 return 0; 1812 } 1813 1814 static int __maybe_unused rsnd_resume(struct device *dev) 1815 { 1816 struct rsnd_priv *priv = dev_get_drvdata(dev); 1817 1818 rsnd_adg_clk_enable(priv); 1819 1820 return 0; 1821 } 1822 1823 static const struct dev_pm_ops rsnd_pm_ops = { 1824 SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume) 1825 }; 1826 1827 static struct platform_driver rsnd_driver = { 1828 .driver = { 1829 .name = "rcar_sound", 1830 .pm = &rsnd_pm_ops, 1831 .of_match_table = rsnd_of_match, 1832 }, 1833 .probe = rsnd_probe, 1834 .remove = rsnd_remove, 1835 }; 1836 module_platform_driver(rsnd_driver); 1837 1838 MODULE_LICENSE("GPL v2"); 1839 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1840 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1841 MODULE_ALIAS("platform:rcar-pcm-audio"); 1842