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 #include <linux/pm_runtime.h> 94 #include <linux/of_graph.h> 95 #include "rsnd.h" 96 97 #define RSND_RATES SNDRV_PCM_RATE_8000_192000 98 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S8 |\ 99 SNDRV_PCM_FMTBIT_S16_LE |\ 100 SNDRV_PCM_FMTBIT_S24_LE) 101 102 static const struct of_device_id rsnd_of_match[] = { 103 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 }, 104 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 }, 105 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 }, 106 { .compatible = "renesas,rcar_sound-gen4", .data = (void *)RSND_GEN4 }, 107 /* Special Handling */ 108 { .compatible = "renesas,rcar_sound-r8a77990", .data = (void *)(RSND_GEN3 | RSND_SOC_E) }, 109 {}, 110 }; 111 MODULE_DEVICE_TABLE(of, rsnd_of_match); 112 113 /* 114 * rsnd_mod functions 115 */ 116 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 117 { 118 if (mod->type != type) { 119 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 120 struct device *dev = rsnd_priv_to_dev(priv); 121 122 dev_warn(dev, "%s is not your expected module\n", 123 rsnd_mod_name(mod)); 124 } 125 } 126 127 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 128 struct rsnd_mod *mod) 129 { 130 if (!mod || !mod->ops || !mod->ops->dma_req) 131 return NULL; 132 133 return mod->ops->dma_req(io, mod); 134 } 135 136 #define MOD_NAME_NUM 5 137 #define MOD_NAME_SIZE 16 138 char *rsnd_mod_name(struct rsnd_mod *mod) 139 { 140 static char names[MOD_NAME_NUM][MOD_NAME_SIZE]; 141 static int num; 142 char *name = names[num]; 143 144 num++; 145 if (num >= MOD_NAME_NUM) 146 num = 0; 147 148 /* 149 * Let's use same char to avoid pointlessness memory 150 * Thus, rsnd_mod_name() should be used immediately 151 * Don't keep pointer 152 */ 153 if ((mod)->ops->id_sub) { 154 snprintf(name, MOD_NAME_SIZE, "%s[%d%d]", 155 mod->ops->name, 156 rsnd_mod_id(mod), 157 rsnd_mod_id_sub(mod)); 158 } else { 159 snprintf(name, MOD_NAME_SIZE, "%s[%d]", 160 mod->ops->name, 161 rsnd_mod_id(mod)); 162 } 163 164 return name; 165 } 166 167 u32 *rsnd_mod_get_status(struct rsnd_mod *mod, 168 struct rsnd_dai_stream *io, 169 enum rsnd_mod_type type) 170 { 171 return &mod->status; 172 } 173 174 int rsnd_mod_id_raw(struct rsnd_mod *mod) 175 { 176 return mod->id; 177 } 178 179 int rsnd_mod_id(struct rsnd_mod *mod) 180 { 181 if ((mod)->ops->id) 182 return (mod)->ops->id(mod); 183 184 return rsnd_mod_id_raw(mod); 185 } 186 187 int rsnd_mod_id_sub(struct rsnd_mod *mod) 188 { 189 if ((mod)->ops->id_sub) 190 return (mod)->ops->id_sub(mod); 191 192 return 0; 193 } 194 195 int rsnd_mod_init(struct rsnd_priv *priv, 196 struct rsnd_mod *mod, 197 struct rsnd_mod_ops *ops, 198 struct clk *clk, 199 enum rsnd_mod_type type, 200 int id) 201 { 202 int ret = clk_prepare(clk); 203 204 if (ret) 205 return ret; 206 207 mod->id = id; 208 mod->ops = ops; 209 mod->type = type; 210 mod->clk = clk; 211 mod->priv = priv; 212 213 return 0; 214 } 215 216 void rsnd_mod_quit(struct rsnd_mod *mod) 217 { 218 clk_unprepare(mod->clk); 219 mod->clk = NULL; 220 } 221 222 void rsnd_mod_interrupt(struct rsnd_mod *mod, 223 void (*callback)(struct rsnd_mod *mod, 224 struct rsnd_dai_stream *io)) 225 { 226 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 227 struct rsnd_dai *rdai; 228 int i; 229 230 for_each_rsnd_dai(rdai, priv, i) { 231 struct rsnd_dai_stream *io = &rdai->playback; 232 233 if (mod == io->mod[mod->type]) 234 callback(mod, io); 235 236 io = &rdai->capture; 237 if (mod == io->mod[mod->type]) 238 callback(mod, io); 239 } 240 } 241 242 int rsnd_io_is_working(struct rsnd_dai_stream *io) 243 { 244 /* see rsnd_dai_stream_init/quit() */ 245 if (io->substream) 246 return snd_pcm_running(io->substream); 247 248 return 0; 249 } 250 251 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io, 252 struct snd_pcm_hw_params *params) 253 { 254 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 255 256 /* 257 * params will be added when refine 258 * see 259 * __rsnd_soc_hw_rule_rate() 260 * __rsnd_soc_hw_rule_channels() 261 */ 262 if (params) 263 return params_channels(params); 264 else if (runtime) 265 return runtime->channels; 266 return 0; 267 } 268 269 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io, 270 struct snd_pcm_hw_params *params) 271 { 272 int chan = rsnd_runtime_channel_original_with_params(io, params); 273 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 274 275 if (ctu_mod) { 276 u32 converted_chan = rsnd_io_converted_chan(io); 277 278 /* 279 * !! Note !! 280 * 281 * converted_chan will be used for CTU, 282 * or TDM Split mode. 283 * User shouldn't use CTU with TDM Split mode. 284 */ 285 if (rsnd_runtime_is_tdm_split(io)) { 286 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); 287 288 dev_err(dev, "CTU and TDM Split should be used\n"); 289 } 290 291 if (converted_chan) 292 return converted_chan; 293 } 294 295 return chan; 296 } 297 298 int rsnd_channel_normalization(int chan) 299 { 300 if (WARN_ON((chan > 8) || (chan < 0))) 301 return 0; 302 303 /* TDM Extend Mode needs 8ch */ 304 if (chan == 6) 305 chan = 8; 306 307 return chan; 308 } 309 310 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io, 311 struct snd_pcm_hw_params *params) 312 { 313 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 314 int chan = rsnd_io_is_play(io) ? 315 rsnd_runtime_channel_after_ctu_with_params(io, params) : 316 rsnd_runtime_channel_original_with_params(io, params); 317 318 /* Use Multi SSI */ 319 if (rsnd_runtime_is_multi_ssi(io)) 320 chan /= rsnd_rdai_ssi_lane_get(rdai); 321 322 return rsnd_channel_normalization(chan); 323 } 324 325 int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io) 326 { 327 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 328 int lane = rsnd_rdai_ssi_lane_get(rdai); 329 int chan = rsnd_io_is_play(io) ? 330 rsnd_runtime_channel_after_ctu(io) : 331 rsnd_runtime_channel_original(io); 332 333 return (chan > 2) && (lane > 1); 334 } 335 336 int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io) 337 { 338 return rsnd_runtime_channel_for_ssi(io) >= 6; 339 } 340 341 int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io) 342 { 343 return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT); 344 } 345 346 /* 347 * ADINR function 348 */ 349 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 350 { 351 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 352 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 353 struct device *dev = rsnd_priv_to_dev(priv); 354 355 switch (snd_pcm_format_width(runtime->format)) { 356 case 8: 357 return 16 << 16; 358 case 16: 359 return 8 << 16; 360 case 24: 361 return 0 << 16; 362 } 363 364 dev_warn(dev, "not supported sample bits\n"); 365 366 return 0; 367 } 368 369 /* 370 * DALIGN function 371 */ 372 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 373 { 374 static const u32 dalign_values[8] = { 375 0x76543210, 0x00000032, 0x00007654, 0x00000076, 376 0xfedcba98, 0x000000ba, 0x0000fedc, 0x000000fe, 377 }; 378 int id = 0; 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 u32 dalign; 383 384 /* 385 * *Hardware* L/R and *Software* L/R are inverted for 16bit data. 386 * 31..16 15...0 387 * HW: [L ch] [R ch] 388 * SW: [R ch] [L ch] 389 * We need to care about inversion timing to control 390 * Playback/Capture correctly. 391 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R 392 * 393 * sL/R : software L/R 394 * hL/R : hardware L/R 395 * (*) : conversion timing 396 * 397 * Playback 398 * sL/R (*) hL/R hL/R hL/R hL/R hL/R 399 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec 400 * 401 * Capture 402 * hL/R hL/R hL/R hL/R hL/R (*) sL/R 403 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM] 404 */ 405 if (rsnd_io_is_play(io)) { 406 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 407 408 target = src ? src : ssiu; 409 } else { 410 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 411 412 target = cmd ? cmd : ssiu; 413 } 414 415 if (mod == ssiu) 416 id = rsnd_mod_id_sub(mod); 417 418 dalign = dalign_values[id]; 419 420 if (mod == target && snd_pcm_format_width(runtime->format) == 16) { 421 /* Target mod needs inverted DALIGN when 16bit */ 422 dalign = (dalign & 0xf0f0f0f0) >> 4 | 423 (dalign & 0x0f0f0f0f) << 4; 424 } 425 426 return dalign; 427 } 428 429 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod) 430 { 431 static const enum rsnd_mod_type playback_mods[] = { 432 RSND_MOD_SRC, 433 RSND_MOD_CMD, 434 RSND_MOD_SSIU, 435 }; 436 static const enum rsnd_mod_type capture_mods[] = { 437 RSND_MOD_CMD, 438 RSND_MOD_SRC, 439 RSND_MOD_SSIU, 440 }; 441 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 442 struct rsnd_mod *tmod = NULL; 443 const enum rsnd_mod_type *mods = 444 rsnd_io_is_play(io) ? 445 playback_mods : capture_mods; 446 int i; 447 448 /* 449 * This is needed for 24bit data 450 * We need to shift 8bit 451 * 452 * Linux 24bit data is located as 0x00****** 453 * HW 24bit data is located as 0x******00 454 * 455 */ 456 if (snd_pcm_format_width(runtime->format) != 24) 457 return 0; 458 459 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) { 460 tmod = rsnd_io_to_mod(io, mods[i]); 461 if (tmod) 462 break; 463 } 464 465 if (tmod != mod) 466 return 0; 467 468 if (rsnd_io_is_play(io)) 469 return (0 << 20) | /* shift to Left */ 470 (8 << 16); /* 8bit */ 471 else 472 return (1 << 20) | /* shift to Right */ 473 (8 << 16); /* 8bit */ 474 } 475 476 /* 477 * rsnd_dai functions 478 */ 479 struct rsnd_mod *rsnd_mod_next(int *iterator, 480 struct rsnd_dai_stream *io, 481 enum rsnd_mod_type *array, 482 int array_size) 483 { 484 int max = array ? array_size : RSND_MOD_MAX; 485 486 for (; *iterator < max; (*iterator)++) { 487 enum rsnd_mod_type type = (array) ? array[*iterator] : *iterator; 488 struct rsnd_mod *mod = rsnd_io_to_mod(io, type); 489 490 if (mod) 491 return mod; 492 } 493 494 return NULL; 495 } 496 497 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 498 { 499 /* CAPTURE */ 500 RSND_MOD_AUDMAPP, 501 RSND_MOD_AUDMA, 502 RSND_MOD_DVC, 503 RSND_MOD_MIX, 504 RSND_MOD_CTU, 505 RSND_MOD_CMD, 506 RSND_MOD_SRC, 507 RSND_MOD_SSIU, 508 RSND_MOD_SSIM3, 509 RSND_MOD_SSIM2, 510 RSND_MOD_SSIM1, 511 RSND_MOD_SSIP, 512 RSND_MOD_SSI, 513 }, { 514 /* PLAYBACK */ 515 RSND_MOD_AUDMAPP, 516 RSND_MOD_AUDMA, 517 RSND_MOD_SSIM3, 518 RSND_MOD_SSIM2, 519 RSND_MOD_SSIM1, 520 RSND_MOD_SSIP, 521 RSND_MOD_SSI, 522 RSND_MOD_SSIU, 523 RSND_MOD_DVC, 524 RSND_MOD_MIX, 525 RSND_MOD_CTU, 526 RSND_MOD_CMD, 527 RSND_MOD_SRC, 528 }, 529 }; 530 531 static int rsnd_status_update(struct rsnd_dai_stream *io, 532 struct rsnd_mod *mod, enum rsnd_mod_type type, 533 int shift, int add, int timing) 534 { 535 u32 *status = mod->ops->get_status(mod, io, type); 536 u32 mask = 0xF << shift; 537 u8 val = (*status >> shift) & 0xF; 538 u8 next_val = (val + add) & 0xF; 539 int func_call = (val == timing); 540 541 /* no status update */ 542 if (add == 0 || shift == 28) 543 return 1; 544 545 if (next_val == 0xF) /* underflow case */ 546 func_call = -1; 547 else 548 *status = (*status & ~mask) + (next_val << shift); 549 550 return func_call; 551 } 552 553 #define rsnd_dai_call(fn, io, param...) \ 554 ({ \ 555 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \ 556 struct rsnd_mod *mod; \ 557 int is_play = rsnd_io_is_play(io); \ 558 int ret = 0, i; \ 559 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 560 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 561 int tmp = 0; \ 562 int func_call = rsnd_status_update(io, mod, types[i], \ 563 __rsnd_mod_shift_##fn, \ 564 __rsnd_mod_add_##fn, \ 565 __rsnd_mod_call_##fn); \ 566 if (func_call > 0 && (mod)->ops->fn) \ 567 tmp = (mod)->ops->fn(mod, io, param); \ 568 if (unlikely(func_call < 0) || \ 569 unlikely(tmp && (tmp != -EPROBE_DEFER))) \ 570 dev_err(dev, "%s : %s error (%d, %d)\n", \ 571 rsnd_mod_name(mod), #fn, tmp, func_call);\ 572 ret |= tmp; \ 573 } \ 574 ret; \ 575 }) 576 577 int rsnd_dai_connect(struct rsnd_mod *mod, 578 struct rsnd_dai_stream *io, 579 enum rsnd_mod_type type) 580 { 581 struct rsnd_priv *priv; 582 struct device *dev; 583 584 if (!mod) 585 return -EIO; 586 587 if (io->mod[type] == mod) 588 return 0; 589 590 if (io->mod[type]) 591 return -EINVAL; 592 593 priv = rsnd_mod_to_priv(mod); 594 dev = rsnd_priv_to_dev(priv); 595 596 io->mod[type] = mod; 597 598 dev_dbg(dev, "%s is connected to io (%s)\n", 599 rsnd_mod_name(mod), 600 rsnd_io_is_play(io) ? "Playback" : "Capture"); 601 602 return 0; 603 } 604 605 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 606 struct rsnd_dai_stream *io, 607 enum rsnd_mod_type type) 608 { 609 io->mod[type] = NULL; 610 } 611 612 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai, 613 int max_channels) 614 { 615 if (max_channels > 0) 616 rdai->max_channels = max_channels; 617 618 return rdai->max_channels; 619 } 620 621 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai, 622 int ssi_lane) 623 { 624 if (ssi_lane > 0) 625 rdai->ssi_lane = ssi_lane; 626 627 return rdai->ssi_lane; 628 } 629 630 int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width) 631 { 632 if (width > 0) 633 rdai->chan_width = width; 634 635 return rdai->chan_width; 636 } 637 638 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 639 { 640 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 641 return NULL; 642 643 return priv->rdai + id; 644 } 645 646 static struct snd_soc_dai_driver 647 *rsnd_daidrv_get(struct rsnd_priv *priv, int id) 648 { 649 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 650 return NULL; 651 652 return priv->daidrv + id; 653 } 654 655 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 656 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 657 { 658 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 659 660 return rsnd_rdai_get(priv, dai->id); 661 } 662 663 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 664 struct snd_pcm_substream *substream) 665 { 666 io->substream = substream; 667 } 668 669 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 670 { 671 io->substream = NULL; 672 } 673 674 static 675 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 676 { 677 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 678 679 return snd_soc_rtd_to_cpu(rtd, 0); 680 } 681 682 static 683 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 684 struct snd_pcm_substream *substream) 685 { 686 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 687 return &rdai->playback; 688 else 689 return &rdai->capture; 690 } 691 692 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 693 struct snd_soc_dai *dai) 694 { 695 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 696 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 697 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 698 int ret; 699 700 guard(spinlock_irqsave)(&priv->lock); 701 702 switch (cmd) { 703 case SNDRV_PCM_TRIGGER_START: 704 case SNDRV_PCM_TRIGGER_RESUME: 705 ret = rsnd_dai_call(init, io, priv); 706 if (ret < 0) 707 break; 708 709 ret = rsnd_dai_call(start, io, priv); 710 if (ret < 0) 711 break; 712 713 ret = rsnd_dai_call(irq, io, priv, 1); 714 break; 715 case SNDRV_PCM_TRIGGER_STOP: 716 case SNDRV_PCM_TRIGGER_SUSPEND: 717 ret = rsnd_dai_call(irq, io, priv, 0); 718 719 ret |= rsnd_dai_call(stop, io, priv); 720 721 ret |= rsnd_dai_call(quit, io, priv); 722 723 break; 724 default: 725 ret = -EINVAL; 726 } 727 728 return ret; 729 } 730 731 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 732 { 733 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 734 735 /* set clock master for audio interface */ 736 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 737 case SND_SOC_DAIFMT_BC_FC: 738 rdai->clk_master = 0; 739 break; 740 case SND_SOC_DAIFMT_BP_FP: 741 rdai->clk_master = 1; /* cpu is master */ 742 break; 743 default: 744 return -EINVAL; 745 } 746 747 /* set format */ 748 rdai->bit_clk_inv = 0; 749 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 750 case SND_SOC_DAIFMT_I2S: 751 rdai->sys_delay = 0; 752 rdai->data_alignment = 0; 753 rdai->frm_clk_inv = 0; 754 break; 755 case SND_SOC_DAIFMT_LEFT_J: 756 case SND_SOC_DAIFMT_DSP_B: 757 rdai->sys_delay = 1; 758 rdai->data_alignment = 0; 759 rdai->frm_clk_inv = 1; 760 break; 761 case SND_SOC_DAIFMT_RIGHT_J: 762 rdai->sys_delay = 1; 763 rdai->data_alignment = 1; 764 rdai->frm_clk_inv = 1; 765 break; 766 case SND_SOC_DAIFMT_DSP_A: 767 rdai->sys_delay = 0; 768 rdai->data_alignment = 0; 769 rdai->frm_clk_inv = 1; 770 break; 771 } 772 773 /* set clock inversion */ 774 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 775 case SND_SOC_DAIFMT_NB_IF: 776 rdai->frm_clk_inv = !rdai->frm_clk_inv; 777 break; 778 case SND_SOC_DAIFMT_IB_NF: 779 rdai->bit_clk_inv = !rdai->bit_clk_inv; 780 break; 781 case SND_SOC_DAIFMT_IB_IF: 782 rdai->bit_clk_inv = !rdai->bit_clk_inv; 783 rdai->frm_clk_inv = !rdai->frm_clk_inv; 784 break; 785 case SND_SOC_DAIFMT_NB_NF: 786 default: 787 break; 788 } 789 790 return 0; 791 } 792 793 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 794 u32 tx_mask, u32 rx_mask, 795 int slots, int slot_width) 796 { 797 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 798 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 799 struct device *dev = rsnd_priv_to_dev(priv); 800 801 switch (slot_width) { 802 case 16: 803 case 24: 804 case 32: 805 break; 806 default: 807 /* use default */ 808 /* 809 * Indicate warning if DT has "dai-tdm-slot-width" 810 * but the value was not expected. 811 */ 812 if (slot_width) 813 dev_warn(dev, "unsupported TDM slot width (%d), force to use default 32\n", 814 slot_width); 815 slot_width = 32; 816 } 817 818 switch (slots) { 819 case 2: 820 /* TDM Split Mode */ 821 case 6: 822 case 8: 823 /* TDM Extend Mode */ 824 rsnd_rdai_channels_set(rdai, slots); 825 rsnd_rdai_ssi_lane_set(rdai, 1); 826 rsnd_rdai_width_set(rdai, slot_width); 827 break; 828 default: 829 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 830 return -EINVAL; 831 } 832 833 return 0; 834 } 835 836 static unsigned int rsnd_soc_hw_channels_list[] = { 837 2, 6, 8, 838 }; 839 840 static unsigned int rsnd_soc_hw_rate_list[] = { 841 8000, 842 11025, 843 16000, 844 22050, 845 32000, 846 44100, 847 48000, 848 64000, 849 88200, 850 96000, 851 176400, 852 192000, 853 }; 854 855 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai, 856 unsigned int *list, int list_num, 857 struct snd_interval *baseline, struct snd_interval *iv, 858 struct rsnd_dai_stream *io, char *unit) 859 { 860 struct snd_interval p; 861 unsigned int rate; 862 int i; 863 864 snd_interval_any(&p); 865 p.min = UINT_MAX; 866 p.max = 0; 867 868 for (i = 0; i < list_num; i++) { 869 870 if (!snd_interval_test(iv, list[i])) 871 continue; 872 873 rate = rsnd_ssi_clk_query(rdai, 874 baseline->min, list[i], NULL); 875 if (rate > 0) { 876 p.min = min(p.min, list[i]); 877 p.max = max(p.max, list[i]); 878 } 879 880 rate = rsnd_ssi_clk_query(rdai, 881 baseline->max, 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 } 887 888 /* Indicate error once if it can't handle */ 889 if (!rsnd_flags_has(io, RSND_HW_RULE_ERR) && (p.min > p.max)) { 890 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 891 struct device *dev = rsnd_priv_to_dev(priv); 892 893 dev_warn(dev, "It can't handle %d %s <-> %d %s\n", 894 baseline->min, unit, baseline->max, unit); 895 rsnd_flags_set(io, RSND_HW_RULE_ERR); 896 } 897 898 return snd_interval_refine(iv, &p); 899 } 900 901 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params, 902 struct snd_pcm_hw_rule *rule) 903 { 904 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 905 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 906 struct snd_interval ic; 907 struct rsnd_dai_stream *io = rule->private; 908 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 909 910 /* 911 * possible sampling rate limitation is same as 912 * 2ch if it supports multi ssi 913 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 914 */ 915 ic = *ic_; 916 ic.min = 917 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 918 919 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list, 920 ARRAY_SIZE(rsnd_soc_hw_rate_list), 921 &ic, ir, io, "ch"); 922 } 923 924 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params, 925 struct snd_pcm_hw_rule *rule) 926 { 927 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 928 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 929 struct snd_interval ic; 930 struct rsnd_dai_stream *io = rule->private; 931 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 932 933 /* 934 * possible sampling rate limitation is same as 935 * 2ch if it supports multi ssi 936 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 937 */ 938 ic = *ic_; 939 ic.min = 940 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 941 942 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list, 943 ARRAY_SIZE(rsnd_soc_hw_channels_list), 944 ir, &ic, io, "Hz"); 945 } 946 947 static const struct snd_pcm_hardware rsnd_pcm_hardware = { 948 .info = SNDRV_PCM_INFO_INTERLEAVED | 949 SNDRV_PCM_INFO_MMAP | 950 SNDRV_PCM_INFO_MMAP_VALID, 951 .buffer_bytes_max = 64 * 1024, 952 .period_bytes_min = 32, 953 .period_bytes_max = 8192, 954 .periods_min = 1, 955 .periods_max = 32, 956 .fifo_size = 256, 957 }; 958 959 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 960 struct snd_soc_dai *dai) 961 { 962 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 963 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 964 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint; 965 struct snd_pcm_runtime *runtime = substream->runtime; 966 unsigned int max_channels = rsnd_rdai_channels_get(rdai); 967 int i; 968 969 rsnd_flags_del(io, RSND_HW_RULE_ERR); 970 971 rsnd_dai_stream_init(io, substream); 972 973 /* 974 * Channel Limitation 975 * It depends on Platform design 976 */ 977 constraint->list = rsnd_soc_hw_channels_list; 978 constraint->count = 0; 979 constraint->mask = 0; 980 981 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) { 982 if (rsnd_soc_hw_channels_list[i] > max_channels) 983 break; 984 constraint->count = i + 1; 985 } 986 987 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 988 989 snd_pcm_hw_constraint_list(runtime, 0, 990 SNDRV_PCM_HW_PARAM_CHANNELS, constraint); 991 992 snd_pcm_hw_constraint_integer(runtime, 993 SNDRV_PCM_HW_PARAM_PERIODS); 994 995 /* 996 * Sampling Rate / Channel Limitation 997 * It depends on Clock Master Mode 998 */ 999 if (rsnd_rdai_is_clk_master(rdai)) { 1000 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 1001 1002 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 1003 rsnd_soc_hw_rule_rate, 1004 is_play ? &rdai->playback : &rdai->capture, 1005 SNDRV_PCM_HW_PARAM_CHANNELS, -1); 1006 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 1007 rsnd_soc_hw_rule_channels, 1008 is_play ? &rdai->playback : &rdai->capture, 1009 SNDRV_PCM_HW_PARAM_RATE, -1); 1010 } 1011 1012 return 0; 1013 } 1014 1015 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 1016 struct snd_soc_dai *dai) 1017 { 1018 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1019 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 1020 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1021 1022 /* 1023 * call rsnd_dai_call without spinlock 1024 */ 1025 rsnd_dai_call(cleanup, io, priv); 1026 1027 rsnd_dai_stream_quit(io); 1028 } 1029 1030 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream, 1031 struct snd_soc_dai *dai) 1032 { 1033 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 1034 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1035 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1036 1037 return rsnd_dai_call(prepare, io, priv); 1038 } 1039 1040 static const u64 rsnd_soc_dai_formats[] = { 1041 /* 1042 * 1st Priority 1043 * 1044 * Well tested formats. 1045 * Select below from Sound Card, not auto 1046 * SND_SOC_DAIFMT_CBC_CFC 1047 * SND_SOC_DAIFMT_CBP_CFP 1048 */ 1049 SND_SOC_POSSIBLE_DAIFMT_I2S | 1050 SND_SOC_POSSIBLE_DAIFMT_RIGHT_J | 1051 SND_SOC_POSSIBLE_DAIFMT_LEFT_J | 1052 SND_SOC_POSSIBLE_DAIFMT_NB_NF | 1053 SND_SOC_POSSIBLE_DAIFMT_NB_IF | 1054 SND_SOC_POSSIBLE_DAIFMT_IB_NF | 1055 SND_SOC_POSSIBLE_DAIFMT_IB_IF, 1056 /* 1057 * 2nd Priority 1058 * 1059 * Supported, but not well tested 1060 */ 1061 SND_SOC_POSSIBLE_DAIFMT_DSP_A | 1062 SND_SOC_POSSIBLE_DAIFMT_DSP_B, 1063 }; 1064 1065 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv, 1066 struct rsnd_dai_stream *io, 1067 struct device_node *dai_np) 1068 { 1069 struct device *dev = rsnd_priv_to_dev(priv); 1070 struct device_node *ssiu_np = rsnd_ssiu_of_node(priv); 1071 int is_play = rsnd_io_is_play(io); 1072 int i; 1073 1074 if (!ssiu_np) 1075 return; 1076 1077 /* 1078 * This driver assumes that it is TDM Split mode 1079 * if it includes ssiu node 1080 */ 1081 for (i = 0;; i++) { 1082 struct device_node *node = is_play ? 1083 of_parse_phandle(dai_np, "playback", i) : 1084 of_parse_phandle(dai_np, "capture", i); 1085 1086 if (!node) 1087 break; 1088 1089 for_each_child_of_node_scoped(ssiu_np, np) { 1090 if (np == node) { 1091 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT); 1092 dev_dbg(dev, "%s is part of TDM Split\n", io->name); 1093 } 1094 } 1095 1096 of_node_put(node); 1097 } 1098 1099 of_node_put(ssiu_np); 1100 } 1101 1102 static void rsnd_parse_connect_simple(struct rsnd_priv *priv, 1103 struct rsnd_dai_stream *io, 1104 struct device_node *dai_np) 1105 { 1106 if (!rsnd_io_to_mod_ssi(io)) 1107 return; 1108 1109 rsnd_parse_tdm_split_mode(priv, io, dai_np); 1110 } 1111 1112 static void rsnd_parse_connect_graph(struct rsnd_priv *priv, 1113 struct rsnd_dai_stream *io, 1114 struct device_node *endpoint) 1115 { 1116 struct device *dev = rsnd_priv_to_dev(priv); 1117 struct device_node *remote_node; 1118 1119 if (!rsnd_io_to_mod_ssi(io)) 1120 return; 1121 1122 remote_node = of_graph_get_remote_port_parent(endpoint); 1123 1124 /* HDMI0 */ 1125 if (strstr(remote_node->full_name, "hdmi@fead0000")) { 1126 rsnd_flags_set(io, RSND_STREAM_HDMI0); 1127 dev_dbg(dev, "%s connected to HDMI0\n", io->name); 1128 } 1129 1130 /* HDMI1 */ 1131 if (strstr(remote_node->full_name, "hdmi@feae0000")) { 1132 rsnd_flags_set(io, RSND_STREAM_HDMI1); 1133 dev_dbg(dev, "%s connected to HDMI1\n", io->name); 1134 } 1135 1136 rsnd_parse_tdm_split_mode(priv, io, endpoint); 1137 1138 of_node_put(remote_node); 1139 } 1140 1141 void rsnd_parse_connect_common(struct rsnd_dai *rdai, char *name, 1142 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 1143 struct device_node *node, 1144 struct device_node *playback, 1145 struct device_node *capture) 1146 { 1147 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 1148 struct device *dev = rsnd_priv_to_dev(priv); 1149 int i; 1150 1151 if (!node) 1152 return; 1153 1154 i = 0; 1155 for_each_child_of_node_scoped(node, np) { 1156 struct rsnd_mod *mod; 1157 1158 i = rsnd_node_fixed_index(dev, np, name, i); 1159 if (i < 0) 1160 break; 1161 1162 mod = mod_get(priv, i); 1163 1164 if (np == playback) 1165 rsnd_dai_connect(mod, &rdai->playback, mod->type); 1166 if (np == capture) 1167 rsnd_dai_connect(mod, &rdai->capture, mod->type); 1168 i++; 1169 } 1170 1171 of_node_put(node); 1172 } 1173 1174 int rsnd_node_fixed_index(struct device *dev, struct device_node *node, char *name, int idx) 1175 { 1176 char node_name[16]; 1177 1178 /* 1179 * rsnd is assuming each device nodes are sequential numbering, 1180 * but some of them are not. 1181 * This function adjusts index for it. 1182 * 1183 * ex) 1184 * Normal case, special case 1185 * ssi-0 1186 * ssi-1 1187 * ssi-2 1188 * ssi-3 ssi-3 1189 * ssi-4 ssi-4 1190 * ... 1191 * 1192 * assume Max 64 node 1193 */ 1194 for (; idx < 64; idx++) { 1195 snprintf(node_name, sizeof(node_name), "%s-%d", name, idx); 1196 1197 if (strncmp(node_name, of_node_full_name(node), sizeof(node_name)) == 0) 1198 return idx; 1199 } 1200 1201 dev_err(dev, "strange node numbering (%s)", 1202 of_node_full_name(node)); 1203 return -EINVAL; 1204 } 1205 1206 int rsnd_node_count(struct rsnd_priv *priv, struct device_node *node, char *name) 1207 { 1208 struct device *dev = rsnd_priv_to_dev(priv); 1209 int i; 1210 1211 i = 0; 1212 for_each_child_of_node_scoped(node, np) { 1213 i = rsnd_node_fixed_index(dev, np, name, i); 1214 if (i < 0) 1215 return 0; 1216 i++; 1217 } 1218 1219 return i; 1220 } 1221 1222 static struct device_node* 1223 rsnd_pick_endpoint_node_for_ports(struct device_node *e_ports, 1224 struct device_node *e_port) 1225 { 1226 if (of_node_name_eq(e_ports, "ports")) 1227 return e_ports; 1228 1229 if (of_node_name_eq(e_ports, "port")) 1230 return e_port; 1231 1232 return NULL; 1233 } 1234 1235 static int rsnd_dai_of_node(struct rsnd_priv *priv, int *is_graph) 1236 { 1237 struct device *dev = rsnd_priv_to_dev(priv); 1238 struct device_node *np = dev->of_node; 1239 struct device_node *node; 1240 int nr = 0; 1241 int i = 0; 1242 1243 *is_graph = 0; 1244 1245 /* 1246 * parse both previous dai (= rcar_sound,dai), and 1247 * graph dai (= ports/port) 1248 */ 1249 1250 /* 1251 * Simple-Card 1252 */ 1253 node = of_get_child_by_name(np, RSND_NODE_DAI); 1254 if (!node) 1255 goto audio_graph; 1256 1257 of_node_put(node); 1258 1259 for_each_child_of_node_scoped(np, node) { 1260 if (!of_node_name_eq(node, RSND_NODE_DAI)) 1261 continue; 1262 1263 priv->component_dais[i] = of_get_child_count(node); 1264 nr += priv->component_dais[i]; 1265 i++; 1266 if (i >= RSND_MAX_COMPONENT) { 1267 dev_info(dev, "reach to max component\n"); 1268 break; 1269 } 1270 } 1271 1272 return nr; 1273 1274 audio_graph: 1275 /* 1276 * Audio-Graph-Card 1277 */ 1278 for_each_child_of_node_scoped(np, ports) { 1279 node = rsnd_pick_endpoint_node_for_ports(ports, np); 1280 if (!node) 1281 continue; 1282 priv->component_dais[i] = of_graph_get_endpoint_count(node); 1283 nr += priv->component_dais[i]; 1284 i++; 1285 if (i >= RSND_MAX_COMPONENT) { 1286 dev_info(dev, "reach to max component\n"); 1287 break; 1288 } 1289 } 1290 1291 *is_graph = 1; 1292 1293 return nr; 1294 } 1295 1296 1297 #define PREALLOC_BUFFER (32 * 1024) 1298 #define PREALLOC_BUFFER_MAX (32 * 1024) 1299 1300 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd, 1301 struct rsnd_dai_stream *io, 1302 int stream) 1303 { 1304 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1305 struct device *dev = rsnd_priv_to_dev(priv); 1306 struct snd_pcm_substream *substream; 1307 1308 /* 1309 * use Audio-DMAC dev if we can use IPMMU 1310 * see 1311 * rsnd_dmaen_attach() 1312 */ 1313 if (io->dmac_dev) 1314 dev = io->dmac_dev; 1315 1316 for (substream = rtd->pcm->streams[stream].substream; 1317 substream; 1318 substream = substream->next) { 1319 snd_pcm_set_managed_buffer(substream, 1320 SNDRV_DMA_TYPE_DEV, 1321 dev, 1322 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1323 } 1324 1325 return 0; 1326 } 1327 1328 static int rsnd_soc_dai_pcm_new(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai) 1329 { 1330 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1331 int ret; 1332 1333 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1334 if (ret) 1335 return ret; 1336 1337 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1338 if (ret) 1339 return ret; 1340 1341 ret = rsnd_preallocate_pages(rtd, &rdai->playback, 1342 SNDRV_PCM_STREAM_PLAYBACK); 1343 if (ret) 1344 return ret; 1345 1346 ret = rsnd_preallocate_pages(rtd, &rdai->capture, 1347 SNDRV_PCM_STREAM_CAPTURE); 1348 if (ret) 1349 return ret; 1350 1351 return 0; 1352 } 1353 1354 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 1355 .pcm_new = rsnd_soc_dai_pcm_new, 1356 .startup = rsnd_soc_dai_startup, 1357 .shutdown = rsnd_soc_dai_shutdown, 1358 .trigger = rsnd_soc_dai_trigger, 1359 .set_fmt = rsnd_soc_dai_set_fmt, 1360 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 1361 .prepare = rsnd_soc_dai_prepare, 1362 .auto_selectable_formats = rsnd_soc_dai_formats, 1363 .num_auto_selectable_formats = ARRAY_SIZE(rsnd_soc_dai_formats), 1364 }; 1365 1366 static void __rsnd_dai_probe(struct rsnd_priv *priv, 1367 struct device_node *dai_np, 1368 struct device_node *node_np, 1369 uint32_t node_arg, 1370 int dai_i) 1371 { 1372 struct rsnd_dai_stream *io_playback; 1373 struct rsnd_dai_stream *io_capture; 1374 struct snd_soc_dai_driver *drv; 1375 struct rsnd_dai *rdai; 1376 struct device *dev = rsnd_priv_to_dev(priv); 1377 int playback_exist = 0, capture_exist = 0; 1378 int io_i; 1379 1380 rdai = rsnd_rdai_get(priv, dai_i); 1381 drv = rsnd_daidrv_get(priv, dai_i); 1382 io_playback = &rdai->playback; 1383 io_capture = &rdai->capture; 1384 1385 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 1386 1387 /* for multi Component */ 1388 rdai->dai_args.np = node_np; 1389 rdai->dai_args.args_count = 1; 1390 rdai->dai_args.args[0] = node_arg; 1391 1392 rdai->priv = priv; 1393 drv->name = rdai->name; 1394 drv->ops = &rsnd_soc_dai_ops; 1395 drv->id = dai_i; 1396 drv->dai_args = &rdai->dai_args; 1397 1398 io_playback->rdai = rdai; 1399 io_capture->rdai = rdai; 1400 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */ 1401 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */ 1402 rsnd_rdai_width_set(rdai, 32); /* default 32bit width */ 1403 1404 for (io_i = 0;; io_i++) { 1405 struct device_node *playback = of_parse_phandle(dai_np, "playback", io_i); 1406 struct device_node *capture = of_parse_phandle(dai_np, "capture", io_i); 1407 1408 if (!playback && !capture) 1409 break; 1410 1411 if (io_i == 0) { 1412 /* check whether playback/capture property exists */ 1413 if (playback) 1414 playback_exist = 1; 1415 if (capture) 1416 capture_exist = 1; 1417 } 1418 1419 rsnd_parse_connect_ssi(rdai, playback, capture); 1420 rsnd_parse_connect_ssiu(rdai, playback, capture); 1421 rsnd_parse_connect_src(rdai, playback, capture); 1422 rsnd_parse_connect_ctu(rdai, playback, capture); 1423 rsnd_parse_connect_mix(rdai, playback, capture); 1424 rsnd_parse_connect_dvc(rdai, playback, capture); 1425 1426 of_node_put(playback); 1427 of_node_put(capture); 1428 } 1429 1430 if (playback_exist) { 1431 snprintf(io_playback->name, RSND_DAI_NAME_SIZE, "DAI%d Playback", dai_i); 1432 drv->playback.rates = RSND_RATES; 1433 drv->playback.formats = RSND_FMTS; 1434 drv->playback.channels_min = 2; 1435 drv->playback.channels_max = 8; 1436 drv->playback.stream_name = io_playback->name; 1437 } 1438 if (capture_exist) { 1439 snprintf(io_capture->name, RSND_DAI_NAME_SIZE, "DAI%d Capture", dai_i); 1440 drv->capture.rates = RSND_RATES; 1441 drv->capture.formats = RSND_FMTS; 1442 drv->capture.channels_min = 2; 1443 drv->capture.channels_max = 8; 1444 drv->capture.stream_name = io_capture->name; 1445 } 1446 1447 if (rsnd_ssi_is_pin_sharing(io_capture) || 1448 rsnd_ssi_is_pin_sharing(io_playback)) { 1449 /* should have symmetric_rate if pin sharing */ 1450 drv->symmetric_rate = 1; 1451 } 1452 1453 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 1454 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 1455 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 1456 } 1457 1458 static int rsnd_dai_probe(struct rsnd_priv *priv) 1459 { 1460 struct snd_soc_dai_driver *rdrv; 1461 struct device *dev = rsnd_priv_to_dev(priv); 1462 struct device_node *np = dev->of_node; 1463 struct rsnd_dai *rdai; 1464 int nr = 0; 1465 int is_graph; 1466 int dai_i; 1467 1468 nr = rsnd_dai_of_node(priv, &is_graph); 1469 1470 /* 1471 * There is a case that it is used only for ADG (Sound Clock). 1472 * No DAI is not error 1473 */ 1474 if (!nr) 1475 return 0; 1476 1477 rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL); 1478 rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL); 1479 if (!rdrv || !rdai) 1480 return -ENOMEM; 1481 1482 priv->rdai_nr = nr; 1483 priv->daidrv = rdrv; 1484 priv->rdai = rdai; 1485 1486 /* 1487 * parse all dai 1488 */ 1489 dai_i = 0; 1490 if (is_graph) { 1491 struct device_node *dai_np_port; 1492 struct device_node *dai_np; 1493 1494 for_each_child_of_node_scoped(np, ports) { 1495 dai_np_port = rsnd_pick_endpoint_node_for_ports(ports, np); 1496 if (!dai_np_port) 1497 continue; 1498 1499 for_each_endpoint_of_node(dai_np_port, dai_np) { 1500 __rsnd_dai_probe(priv, dai_np, dai_np, 0, dai_i); 1501 if (!rsnd_is_gen1(priv) && !rsnd_is_gen2(priv)) { 1502 rdai = rsnd_rdai_get(priv, dai_i); 1503 1504 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np); 1505 rsnd_parse_connect_graph(priv, &rdai->capture, dai_np); 1506 } 1507 dai_i++; 1508 } 1509 } 1510 } else { 1511 for_each_child_of_node_scoped(np, node) { 1512 if (!of_node_name_eq(node, RSND_NODE_DAI)) 1513 continue; 1514 1515 for_each_child_of_node_scoped(node, dai_np) { 1516 __rsnd_dai_probe(priv, dai_np, np, dai_i, dai_i); 1517 if (!rsnd_is_gen1(priv) && !rsnd_is_gen2(priv)) { 1518 rdai = rsnd_rdai_get(priv, dai_i); 1519 1520 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np); 1521 rsnd_parse_connect_simple(priv, &rdai->capture, dai_np); 1522 } 1523 dai_i++; 1524 } 1525 } 1526 } 1527 1528 return 0; 1529 } 1530 1531 /* 1532 * pcm ops 1533 */ 1534 static int rsnd_hw_update(struct snd_pcm_substream *substream, 1535 struct snd_pcm_hw_params *hw_params) 1536 { 1537 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1538 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1539 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1540 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1541 int ret; 1542 1543 guard(spinlock_irqsave)(&priv->lock); 1544 1545 if (hw_params) 1546 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 1547 else 1548 ret = rsnd_dai_call(hw_free, io, substream); 1549 1550 return ret; 1551 } 1552 1553 static int rsnd_hw_params(struct snd_soc_component *component, 1554 struct snd_pcm_substream *substream, 1555 struct snd_pcm_hw_params *hw_params) 1556 { 1557 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1558 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1559 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1560 struct snd_soc_pcm_runtime *fe = snd_soc_substream_to_rtd(substream); 1561 1562 /* 1563 * rsnd assumes that it might be used under DPCM if user want to use 1564 * channel / rate convert. Then, rsnd should be FE. 1565 * And then, this function will be called *after* BE settings. 1566 * this means, each BE already has fixuped hw_params. 1567 * see 1568 * dpcm_fe_dai_hw_params() 1569 * dpcm_be_dai_hw_params() 1570 */ 1571 io->converted_rate = 0; 1572 io->converted_chan = 0; 1573 if (fe->dai_link->dynamic) { 1574 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1575 struct device *dev = rsnd_priv_to_dev(priv); 1576 struct snd_soc_dpcm *dpcm; 1577 int stream = substream->stream; 1578 1579 for_each_dpcm_be(fe, stream, dpcm) { 1580 struct snd_soc_pcm_runtime *be = dpcm->be; 1581 struct snd_pcm_hw_params *be_params = &be->dpcm[stream].hw_params; 1582 1583 if (params_channels(hw_params) != params_channels(be_params)) 1584 io->converted_chan = params_channels(be_params); 1585 if (params_rate(hw_params) != params_rate(be_params)) 1586 io->converted_rate = params_rate(be_params); 1587 } 1588 if (io->converted_chan) 1589 dev_dbg(dev, "convert channels = %d\n", io->converted_chan); 1590 if (io->converted_rate) { 1591 /* 1592 * SRC supports convert rates from params_rate(hw_params)/k_down 1593 * to params_rate(hw_params)*k_up, where k_up is always 6, and 1594 * k_down depends on number of channels and SRC unit. 1595 * So all SRC units can upsample audio up to 6 times regardless 1596 * its number of channels. And all SRC units can downsample 1597 * 2 channel audio up to 6 times too. 1598 */ 1599 int k_up = 6; 1600 int k_down = 6; 1601 int channel; 1602 struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io); 1603 1604 dev_dbg(dev, "convert rate = %d\n", io->converted_rate); 1605 1606 channel = io->converted_chan ? io->converted_chan : 1607 params_channels(hw_params); 1608 1609 switch (rsnd_mod_id(src_mod)) { 1610 /* 1611 * SRC0 can downsample 4, 6 and 8 channel audio up to 4 times. 1612 * SRC1, SRC3 and SRC4 can downsample 4 channel audio 1613 * up to 4 times. 1614 * SRC1, SRC3 and SRC4 can downsample 6 and 8 channel audio 1615 * no more than twice. 1616 */ 1617 case 1: 1618 case 3: 1619 case 4: 1620 if (channel > 4) { 1621 k_down = 2; 1622 break; 1623 } 1624 fallthrough; 1625 case 0: 1626 if (channel > 2) 1627 k_down = 4; 1628 break; 1629 1630 /* Other SRC units do not support more than 2 channels */ 1631 default: 1632 if (channel > 2) 1633 return -EINVAL; 1634 } 1635 1636 if (params_rate(hw_params) > io->converted_rate * k_down) { 1637 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->min = 1638 io->converted_rate * k_down; 1639 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->max = 1640 io->converted_rate * k_down; 1641 hw_params->cmask |= SNDRV_PCM_HW_PARAM_RATE; 1642 } else if (params_rate(hw_params) * k_up < io->converted_rate) { 1643 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->min = 1644 DIV_ROUND_UP(io->converted_rate, k_up); 1645 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->max = 1646 DIV_ROUND_UP(io->converted_rate, k_up); 1647 hw_params->cmask |= SNDRV_PCM_HW_PARAM_RATE; 1648 } 1649 1650 /* 1651 * TBD: Max SRC input and output rates also depend on number 1652 * of channels and SRC unit: 1653 * SRC1, SRC3 and SRC4 do not support more than 128kHz 1654 * for 6 channel and 96kHz for 8 channel audio. 1655 * Perhaps this function should return EINVAL if the input or 1656 * the output rate exceeds the limitation. 1657 */ 1658 } 1659 } 1660 1661 return rsnd_hw_update(substream, hw_params); 1662 } 1663 1664 static int rsnd_hw_free(struct snd_soc_component *component, 1665 struct snd_pcm_substream *substream) 1666 { 1667 return rsnd_hw_update(substream, NULL); 1668 } 1669 1670 static snd_pcm_uframes_t rsnd_pointer(struct snd_soc_component *component, 1671 struct snd_pcm_substream *substream) 1672 { 1673 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1674 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1675 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1676 snd_pcm_uframes_t pointer = 0; 1677 1678 rsnd_dai_call(pointer, io, &pointer); 1679 1680 return pointer; 1681 } 1682 1683 /* 1684 * snd_kcontrol 1685 */ 1686 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 1687 struct snd_ctl_elem_info *uinfo) 1688 { 1689 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1690 1691 if (cfg->texts) { 1692 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 1693 uinfo->count = cfg->size; 1694 uinfo->value.enumerated.items = cfg->max; 1695 if (uinfo->value.enumerated.item >= cfg->max) 1696 uinfo->value.enumerated.item = cfg->max - 1; 1697 strscpy(uinfo->value.enumerated.name, 1698 cfg->texts[uinfo->value.enumerated.item], 1699 sizeof(uinfo->value.enumerated.name)); 1700 } else { 1701 uinfo->count = cfg->size; 1702 uinfo->value.integer.min = 0; 1703 uinfo->value.integer.max = cfg->max; 1704 uinfo->type = (cfg->max == 1) ? 1705 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 1706 SNDRV_CTL_ELEM_TYPE_INTEGER; 1707 } 1708 1709 return 0; 1710 } 1711 1712 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 1713 struct snd_ctl_elem_value *uc) 1714 { 1715 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1716 int i; 1717 1718 for (i = 0; i < cfg->size; i++) 1719 if (cfg->texts) 1720 uc->value.enumerated.item[i] = cfg->val[i]; 1721 else 1722 uc->value.integer.value[i] = cfg->val[i]; 1723 1724 return 0; 1725 } 1726 1727 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 1728 struct snd_ctl_elem_value *uc) 1729 { 1730 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1731 int i, change = 0; 1732 1733 if (!cfg->accept(cfg->io)) 1734 return 0; 1735 1736 for (i = 0; i < cfg->size; i++) { 1737 if (cfg->texts) { 1738 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 1739 cfg->val[i] = uc->value.enumerated.item[i]; 1740 } else { 1741 change |= (uc->value.integer.value[i] != cfg->val[i]); 1742 cfg->val[i] = uc->value.integer.value[i]; 1743 } 1744 } 1745 1746 if (change && cfg->update) 1747 cfg->update(cfg->io, cfg->mod); 1748 1749 return change; 1750 } 1751 1752 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io) 1753 { 1754 return 1; 1755 } 1756 1757 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg) 1758 { 1759 cfg->cfg.val = cfg->val; 1760 1761 return &cfg->cfg; 1762 } 1763 1764 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg) 1765 { 1766 cfg->cfg.val = &cfg->val; 1767 1768 return &cfg->cfg; 1769 } 1770 1771 const char * const volume_ramp_rate[] = { 1772 "128 dB/1 step", /* 00000 */ 1773 "64 dB/1 step", /* 00001 */ 1774 "32 dB/1 step", /* 00010 */ 1775 "16 dB/1 step", /* 00011 */ 1776 "8 dB/1 step", /* 00100 */ 1777 "4 dB/1 step", /* 00101 */ 1778 "2 dB/1 step", /* 00110 */ 1779 "1 dB/1 step", /* 00111 */ 1780 "0.5 dB/1 step", /* 01000 */ 1781 "0.25 dB/1 step", /* 01001 */ 1782 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */ 1783 "0.125 dB/2 steps", /* 01011 */ 1784 "0.125 dB/4 steps", /* 01100 */ 1785 "0.125 dB/8 steps", /* 01101 */ 1786 "0.125 dB/16 steps", /* 01110 */ 1787 "0.125 dB/32 steps", /* 01111 */ 1788 "0.125 dB/64 steps", /* 10000 */ 1789 "0.125 dB/128 steps", /* 10001 */ 1790 "0.125 dB/256 steps", /* 10010 */ 1791 "0.125 dB/512 steps", /* 10011 */ 1792 "0.125 dB/1024 steps", /* 10100 */ 1793 "0.125 dB/2048 steps", /* 10101 */ 1794 "0.125 dB/4096 steps", /* 10110 */ 1795 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */ 1796 }; 1797 1798 int rsnd_kctrl_new(struct rsnd_mod *mod, 1799 struct rsnd_dai_stream *io, 1800 struct snd_soc_pcm_runtime *rtd, 1801 const unsigned char *name, 1802 int (*accept)(struct rsnd_dai_stream *io), 1803 void (*update)(struct rsnd_dai_stream *io, 1804 struct rsnd_mod *mod), 1805 struct rsnd_kctrl_cfg *cfg, 1806 const char * const *texts, 1807 int size, 1808 u32 max) 1809 { 1810 struct snd_card *card = rtd->card->snd_card; 1811 struct snd_kcontrol *kctrl; 1812 struct snd_kcontrol_new knew = { 1813 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1814 .name = name, 1815 .info = rsnd_kctrl_info, 1816 .index = rtd->id, 1817 .get = rsnd_kctrl_get, 1818 .put = rsnd_kctrl_put, 1819 }; 1820 int ret; 1821 1822 /* 1823 * 1) Avoid duplicate register for DVC with MIX case 1824 * 2) Allow duplicate register for MIX 1825 * 3) re-register if card was rebinded 1826 */ 1827 list_for_each_entry(kctrl, &card->controls, list) { 1828 struct rsnd_kctrl_cfg *c = kctrl->private_data; 1829 1830 if (c == cfg) 1831 return 0; 1832 } 1833 1834 if (size > RSND_MAX_CHANNELS) 1835 return -EINVAL; 1836 1837 kctrl = snd_ctl_new1(&knew, cfg); 1838 if (!kctrl) 1839 return -ENOMEM; 1840 1841 ret = snd_ctl_add(card, kctrl); 1842 if (ret < 0) 1843 return ret; 1844 1845 cfg->texts = texts; 1846 cfg->max = max; 1847 cfg->size = size; 1848 cfg->accept = accept; 1849 cfg->update = update; 1850 cfg->card = card; 1851 cfg->kctrl = kctrl; 1852 cfg->io = io; 1853 cfg->mod = mod; 1854 1855 return 0; 1856 } 1857 1858 /* 1859 * snd_soc_component 1860 */ 1861 static const struct snd_soc_component_driver rsnd_soc_component = { 1862 .name = "rsnd", 1863 .probe = rsnd_debugfs_probe, 1864 .hw_params = rsnd_hw_params, 1865 .hw_free = rsnd_hw_free, 1866 .pointer = rsnd_pointer, 1867 .legacy_dai_naming = 1, 1868 }; 1869 1870 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1871 struct rsnd_dai_stream *io) 1872 { 1873 int ret; 1874 1875 ret = rsnd_dai_call(probe, io, priv); 1876 if (ret == -EAGAIN) { 1877 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1878 struct rsnd_mod *mod; 1879 int i; 1880 1881 /* 1882 * Fallback to PIO mode 1883 */ 1884 1885 /* 1886 * call "remove" for SSI/SRC/DVC 1887 * SSI will be switch to PIO mode if it was DMA mode 1888 * see 1889 * rsnd_dma_init() 1890 * rsnd_ssi_fallback() 1891 */ 1892 rsnd_dai_call(remove, io, priv); 1893 1894 /* 1895 * remove all mod from io 1896 * and, re connect ssi 1897 */ 1898 for_each_rsnd_mod(i, mod, io) 1899 rsnd_dai_disconnect(mod, io, i); 1900 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1901 1902 /* 1903 * fallback 1904 */ 1905 rsnd_dai_call(fallback, io, priv); 1906 1907 /* 1908 * retry to "probe". 1909 * DAI has SSI which is PIO mode only now. 1910 */ 1911 ret = rsnd_dai_call(probe, io, priv); 1912 } 1913 1914 return ret; 1915 } 1916 1917 /* 1918 * rsnd probe 1919 */ 1920 static int rsnd_probe(struct platform_device *pdev) 1921 { 1922 struct rsnd_priv *priv; 1923 struct device *dev = &pdev->dev; 1924 struct rsnd_dai *rdai; 1925 int (*probe_func[])(struct rsnd_priv *priv) = { 1926 rsnd_gen_probe, 1927 rsnd_dma_probe, 1928 rsnd_ssi_probe, 1929 rsnd_ssiu_probe, 1930 rsnd_src_probe, 1931 rsnd_ctu_probe, 1932 rsnd_mix_probe, 1933 rsnd_dvc_probe, 1934 rsnd_cmd_probe, 1935 rsnd_adg_probe, 1936 rsnd_dai_probe, 1937 }; 1938 int ret, i; 1939 int ci; 1940 1941 /* 1942 * init priv data 1943 */ 1944 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1945 if (!priv) 1946 return -ENODEV; 1947 1948 priv->pdev = pdev; 1949 priv->flags = (unsigned long)of_device_get_match_data(dev); 1950 spin_lock_init(&priv->lock); 1951 1952 /* 1953 * init each module 1954 */ 1955 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1956 ret = probe_func[i](priv); 1957 if (ret) 1958 return ret; 1959 } 1960 1961 for_each_rsnd_dai(rdai, priv, i) { 1962 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1963 if (ret) 1964 goto exit_snd_probe; 1965 1966 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1967 if (ret) 1968 goto exit_snd_probe; 1969 } 1970 1971 dev_set_drvdata(dev, priv); 1972 1973 /* 1974 * asoc register 1975 */ 1976 ci = 0; 1977 for (i = 0; priv->component_dais[i] > 0; i++) { 1978 int nr = priv->component_dais[i]; 1979 1980 ret = devm_snd_soc_register_component(dev, &rsnd_soc_component, 1981 priv->daidrv + ci, nr); 1982 if (ret < 0) { 1983 dev_err(dev, "cannot snd component register\n"); 1984 goto exit_snd_probe; 1985 } 1986 1987 ci += nr; 1988 } 1989 1990 pm_runtime_enable(dev); 1991 1992 dev_info(dev, "probed\n"); 1993 return ret; 1994 1995 exit_snd_probe: 1996 for_each_rsnd_dai(rdai, priv, i) { 1997 rsnd_dai_call(remove, &rdai->playback, priv); 1998 rsnd_dai_call(remove, &rdai->capture, priv); 1999 } 2000 2001 /* 2002 * adg is very special mod which can't use rsnd_dai_call(remove), 2003 * and it registers ADG clock on probe. 2004 * It should be unregister if probe failed. 2005 * Mainly it is assuming -EPROBE_DEFER case 2006 */ 2007 rsnd_adg_remove(priv); 2008 2009 return ret; 2010 } 2011 2012 static void rsnd_remove(struct platform_device *pdev) 2013 { 2014 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 2015 struct rsnd_dai *rdai; 2016 void (*remove_func[])(struct rsnd_priv *priv) = { 2017 rsnd_ssi_remove, 2018 rsnd_ssiu_remove, 2019 rsnd_src_remove, 2020 rsnd_ctu_remove, 2021 rsnd_mix_remove, 2022 rsnd_dvc_remove, 2023 rsnd_cmd_remove, 2024 rsnd_adg_remove, 2025 }; 2026 int i; 2027 2028 pm_runtime_disable(&pdev->dev); 2029 2030 for_each_rsnd_dai(rdai, priv, i) { 2031 int ret; 2032 2033 ret = rsnd_dai_call(remove, &rdai->playback, priv); 2034 if (ret) 2035 dev_warn(&pdev->dev, "Failed to remove playback dai #%d\n", i); 2036 2037 ret = rsnd_dai_call(remove, &rdai->capture, priv); 2038 if (ret) 2039 dev_warn(&pdev->dev, "Failed to remove capture dai #%d\n", i); 2040 } 2041 2042 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 2043 remove_func[i](priv); 2044 } 2045 2046 static int rsnd_suspend(struct device *dev) 2047 { 2048 struct rsnd_priv *priv = dev_get_drvdata(dev); 2049 2050 rsnd_adg_clk_disable(priv); 2051 2052 return 0; 2053 } 2054 2055 static int rsnd_resume(struct device *dev) 2056 { 2057 struct rsnd_priv *priv = dev_get_drvdata(dev); 2058 2059 return rsnd_adg_clk_enable(priv); 2060 } 2061 2062 static const struct dev_pm_ops rsnd_pm_ops = { 2063 SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume) 2064 }; 2065 2066 static struct platform_driver rsnd_driver = { 2067 .driver = { 2068 .name = "rcar_sound", 2069 .pm = pm_ptr(&rsnd_pm_ops), 2070 .of_match_table = rsnd_of_match, 2071 }, 2072 .probe = rsnd_probe, 2073 .remove = rsnd_remove, 2074 }; 2075 module_platform_driver(rsnd_driver); 2076 2077 MODULE_LICENSE("GPL v2"); 2078 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 2079 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 2080 MODULE_ALIAS("platform:rcar-pcm-audio"); 2081