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 "rsnd.h" 95 96 #define RSND_RATES SNDRV_PCM_RATE_8000_192000 97 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S8 |\ 98 SNDRV_PCM_FMTBIT_S16_LE |\ 99 SNDRV_PCM_FMTBIT_S24_LE) 100 101 static const struct of_device_id rsnd_of_match[] = { 102 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 }, 103 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 }, 104 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 }, 105 { .compatible = "renesas,rcar_sound-gen4", .data = (void *)RSND_GEN4 }, 106 /* Special Handling */ 107 { .compatible = "renesas,rcar_sound-r8a77990", .data = (void *)(RSND_GEN3 | RSND_SOC_E) }, 108 {}, 109 }; 110 MODULE_DEVICE_TABLE(of, rsnd_of_match); 111 112 /* 113 * rsnd_mod functions 114 */ 115 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 116 { 117 if (mod->type != type) { 118 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 119 struct device *dev = rsnd_priv_to_dev(priv); 120 121 dev_warn(dev, "%s is not your expected module\n", 122 rsnd_mod_name(mod)); 123 } 124 } 125 126 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 127 struct rsnd_mod *mod) 128 { 129 if (!mod || !mod->ops || !mod->ops->dma_req) 130 return NULL; 131 132 return mod->ops->dma_req(io, mod); 133 } 134 135 #define MOD_NAME_NUM 5 136 #define MOD_NAME_SIZE 16 137 char *rsnd_mod_name(struct rsnd_mod *mod) 138 { 139 static char names[MOD_NAME_NUM][MOD_NAME_SIZE]; 140 static int num; 141 char *name = names[num]; 142 143 num++; 144 if (num >= MOD_NAME_NUM) 145 num = 0; 146 147 /* 148 * Let's use same char to avoid pointlessness memory 149 * Thus, rsnd_mod_name() should be used immediately 150 * Don't keep pointer 151 */ 152 if ((mod)->ops->id_sub) { 153 snprintf(name, MOD_NAME_SIZE, "%s[%d%d]", 154 mod->ops->name, 155 rsnd_mod_id(mod), 156 rsnd_mod_id_sub(mod)); 157 } else { 158 snprintf(name, MOD_NAME_SIZE, "%s[%d]", 159 mod->ops->name, 160 rsnd_mod_id(mod)); 161 } 162 163 return name; 164 } 165 166 u32 *rsnd_mod_get_status(struct rsnd_mod *mod, 167 struct rsnd_dai_stream *io, 168 enum rsnd_mod_type type) 169 { 170 return &mod->status; 171 } 172 173 int rsnd_mod_id_raw(struct rsnd_mod *mod) 174 { 175 return mod->id; 176 } 177 178 int rsnd_mod_id(struct rsnd_mod *mod) 179 { 180 if ((mod)->ops->id) 181 return (mod)->ops->id(mod); 182 183 return rsnd_mod_id_raw(mod); 184 } 185 186 int rsnd_mod_id_sub(struct rsnd_mod *mod) 187 { 188 if ((mod)->ops->id_sub) 189 return (mod)->ops->id_sub(mod); 190 191 return 0; 192 } 193 194 int rsnd_mod_init(struct rsnd_priv *priv, 195 struct rsnd_mod *mod, 196 struct rsnd_mod_ops *ops, 197 struct clk *clk, 198 enum rsnd_mod_type type, 199 int id) 200 { 201 int ret = clk_prepare(clk); 202 203 if (ret) 204 return ret; 205 206 mod->id = id; 207 mod->ops = ops; 208 mod->type = type; 209 mod->clk = clk; 210 mod->priv = priv; 211 212 return 0; 213 } 214 215 void rsnd_mod_quit(struct rsnd_mod *mod) 216 { 217 clk_unprepare(mod->clk); 218 mod->clk = NULL; 219 } 220 221 void rsnd_mod_interrupt(struct rsnd_mod *mod, 222 void (*callback)(struct rsnd_mod *mod, 223 struct rsnd_dai_stream *io)) 224 { 225 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 226 struct rsnd_dai *rdai; 227 int i; 228 229 for_each_rsnd_dai(rdai, priv, i) { 230 struct rsnd_dai_stream *io = &rdai->playback; 231 232 if (mod == io->mod[mod->type]) 233 callback(mod, io); 234 235 io = &rdai->capture; 236 if (mod == io->mod[mod->type]) 237 callback(mod, io); 238 } 239 } 240 241 int rsnd_io_is_working(struct rsnd_dai_stream *io) 242 { 243 /* see rsnd_dai_stream_init/quit() */ 244 if (io->substream) 245 return snd_pcm_running(io->substream); 246 247 return 0; 248 } 249 250 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io, 251 struct snd_pcm_hw_params *params) 252 { 253 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 254 255 /* 256 * params will be added when refine 257 * see 258 * __rsnd_soc_hw_rule_rate() 259 * __rsnd_soc_hw_rule_channels() 260 */ 261 if (params) 262 return params_channels(params); 263 else if (runtime) 264 return runtime->channels; 265 return 0; 266 } 267 268 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io, 269 struct snd_pcm_hw_params *params) 270 { 271 int chan = rsnd_runtime_channel_original_with_params(io, params); 272 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 273 274 if (ctu_mod) { 275 u32 converted_chan = rsnd_io_converted_chan(io); 276 277 /* 278 * !! Note !! 279 * 280 * converted_chan will be used for CTU, 281 * or TDM Split mode. 282 * User shouldn't use CTU with TDM Split mode. 283 */ 284 if (rsnd_runtime_is_tdm_split(io)) { 285 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); 286 287 dev_err(dev, "CTU and TDM Split should be used\n"); 288 } 289 290 if (converted_chan) 291 return converted_chan; 292 } 293 294 return chan; 295 } 296 297 int rsnd_channel_normalization(int chan) 298 { 299 if (WARN_ON((chan > 8) || (chan < 0))) 300 return 0; 301 302 /* TDM Extend Mode needs 8ch */ 303 if (chan == 6) 304 chan = 8; 305 306 return chan; 307 } 308 309 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io, 310 struct snd_pcm_hw_params *params) 311 { 312 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 313 int chan = rsnd_io_is_play(io) ? 314 rsnd_runtime_channel_after_ctu_with_params(io, params) : 315 rsnd_runtime_channel_original_with_params(io, params); 316 317 /* Use Multi SSI */ 318 if (rsnd_runtime_is_multi_ssi(io)) 319 chan /= rsnd_rdai_ssi_lane_get(rdai); 320 321 return rsnd_channel_normalization(chan); 322 } 323 324 int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io) 325 { 326 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 327 int lane = rsnd_rdai_ssi_lane_get(rdai); 328 int chan = rsnd_io_is_play(io) ? 329 rsnd_runtime_channel_after_ctu(io) : 330 rsnd_runtime_channel_original(io); 331 332 return (chan > 2) && (lane > 1); 333 } 334 335 int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io) 336 { 337 return rsnd_runtime_channel_for_ssi(io) >= 6; 338 } 339 340 int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io) 341 { 342 return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT); 343 } 344 345 /* 346 * ADINR function 347 */ 348 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 349 { 350 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 351 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 352 struct device *dev = rsnd_priv_to_dev(priv); 353 354 switch (snd_pcm_format_width(runtime->format)) { 355 case 8: 356 return 16 << 16; 357 case 16: 358 return 8 << 16; 359 case 24: 360 return 0 << 16; 361 } 362 363 dev_warn(dev, "not supported sample bits\n"); 364 365 return 0; 366 } 367 368 /* 369 * DALIGN function 370 */ 371 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 372 { 373 static const u32 dalign_values[8] = { 374 0x76543210, 0x00000032, 0x00007654, 0x00000076, 375 0xfedcba98, 0x000000ba, 0x0000fedc, 0x000000fe, 376 }; 377 int id = 0; 378 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); 379 struct rsnd_mod *target; 380 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 381 u32 dalign; 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 if (mod == ssiu) 415 id = rsnd_mod_id_sub(mod); 416 417 dalign = dalign_values[id]; 418 419 if (mod == target && snd_pcm_format_width(runtime->format) == 16) { 420 /* Target mod needs inverted DALIGN when 16bit */ 421 dalign = (dalign & 0xf0f0f0f0) >> 4 | 422 (dalign & 0x0f0f0f0f) << 4; 423 } 424 425 return dalign; 426 } 427 428 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod) 429 { 430 static const enum rsnd_mod_type playback_mods[] = { 431 RSND_MOD_SRC, 432 RSND_MOD_CMD, 433 RSND_MOD_SSIU, 434 }; 435 static const enum rsnd_mod_type capture_mods[] = { 436 RSND_MOD_CMD, 437 RSND_MOD_SRC, 438 RSND_MOD_SSIU, 439 }; 440 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 441 struct rsnd_mod *tmod = NULL; 442 const enum rsnd_mod_type *mods = 443 rsnd_io_is_play(io) ? 444 playback_mods : capture_mods; 445 int i; 446 447 /* 448 * This is needed for 24bit data 449 * We need to shift 8bit 450 * 451 * Linux 24bit data is located as 0x00****** 452 * HW 24bit data is located as 0x******00 453 * 454 */ 455 if (snd_pcm_format_width(runtime->format) != 24) 456 return 0; 457 458 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) { 459 tmod = rsnd_io_to_mod(io, mods[i]); 460 if (tmod) 461 break; 462 } 463 464 if (tmod != mod) 465 return 0; 466 467 if (rsnd_io_is_play(io)) 468 return (0 << 20) | /* shift to Left */ 469 (8 << 16); /* 8bit */ 470 else 471 return (1 << 20) | /* shift to Right */ 472 (8 << 16); /* 8bit */ 473 } 474 475 /* 476 * rsnd_dai functions 477 */ 478 struct rsnd_mod *rsnd_mod_next(int *iterator, 479 struct rsnd_dai_stream *io, 480 enum rsnd_mod_type *array, 481 int array_size) 482 { 483 int max = array ? array_size : RSND_MOD_MAX; 484 485 for (; *iterator < max; (*iterator)++) { 486 enum rsnd_mod_type type = (array) ? array[*iterator] : *iterator; 487 struct rsnd_mod *mod = rsnd_io_to_mod(io, type); 488 489 if (mod) 490 return mod; 491 } 492 493 return NULL; 494 } 495 496 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 497 { 498 /* CAPTURE */ 499 RSND_MOD_AUDMAPP, 500 RSND_MOD_AUDMA, 501 RSND_MOD_DVC, 502 RSND_MOD_MIX, 503 RSND_MOD_CTU, 504 RSND_MOD_CMD, 505 RSND_MOD_SRC, 506 RSND_MOD_SSIU, 507 RSND_MOD_SSIM3, 508 RSND_MOD_SSIM2, 509 RSND_MOD_SSIM1, 510 RSND_MOD_SSIP, 511 RSND_MOD_SSI, 512 }, { 513 /* PLAYBACK */ 514 RSND_MOD_AUDMAPP, 515 RSND_MOD_AUDMA, 516 RSND_MOD_SSIM3, 517 RSND_MOD_SSIM2, 518 RSND_MOD_SSIM1, 519 RSND_MOD_SSIP, 520 RSND_MOD_SSI, 521 RSND_MOD_SSIU, 522 RSND_MOD_DVC, 523 RSND_MOD_MIX, 524 RSND_MOD_CTU, 525 RSND_MOD_CMD, 526 RSND_MOD_SRC, 527 }, 528 }; 529 530 static int rsnd_status_update(struct rsnd_dai_stream *io, 531 struct rsnd_mod *mod, enum rsnd_mod_type type, 532 int shift, int add, int timing) 533 { 534 u32 *status = mod->ops->get_status(mod, io, type); 535 u32 mask = 0xF << shift; 536 u8 val = (*status >> shift) & 0xF; 537 u8 next_val = (val + add) & 0xF; 538 int func_call = (val == timing); 539 540 /* no status update */ 541 if (add == 0 || shift == 28) 542 return 1; 543 544 if (next_val == 0xF) /* underflow case */ 545 func_call = -1; 546 else 547 *status = (*status & ~mask) + (next_val << shift); 548 549 return func_call; 550 } 551 552 #define rsnd_dai_call(fn, io, param...) \ 553 ({ \ 554 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \ 555 struct rsnd_mod *mod; \ 556 int is_play = rsnd_io_is_play(io); \ 557 int ret = 0, i; \ 558 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 559 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 560 int tmp = 0; \ 561 int func_call = rsnd_status_update(io, mod, types[i], \ 562 __rsnd_mod_shift_##fn, \ 563 __rsnd_mod_add_##fn, \ 564 __rsnd_mod_call_##fn); \ 565 if (func_call > 0 && (mod)->ops->fn) \ 566 tmp = (mod)->ops->fn(mod, io, param); \ 567 if (unlikely(func_call < 0) || \ 568 unlikely(tmp && (tmp != -EPROBE_DEFER))) \ 569 dev_err(dev, "%s : %s error (%d, %d)\n", \ 570 rsnd_mod_name(mod), #fn, tmp, func_call);\ 571 ret |= tmp; \ 572 } \ 573 ret; \ 574 }) 575 576 int rsnd_dai_connect(struct rsnd_mod *mod, 577 struct rsnd_dai_stream *io, 578 enum rsnd_mod_type type) 579 { 580 struct rsnd_priv *priv; 581 struct device *dev; 582 583 if (!mod) 584 return -EIO; 585 586 if (io->mod[type] == mod) 587 return 0; 588 589 if (io->mod[type]) 590 return -EINVAL; 591 592 priv = rsnd_mod_to_priv(mod); 593 dev = rsnd_priv_to_dev(priv); 594 595 io->mod[type] = mod; 596 597 dev_dbg(dev, "%s is connected to io (%s)\n", 598 rsnd_mod_name(mod), 599 rsnd_io_is_play(io) ? "Playback" : "Capture"); 600 601 return 0; 602 } 603 604 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 605 struct rsnd_dai_stream *io, 606 enum rsnd_mod_type type) 607 { 608 io->mod[type] = NULL; 609 } 610 611 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai, 612 int max_channels) 613 { 614 if (max_channels > 0) 615 rdai->max_channels = max_channels; 616 617 return rdai->max_channels; 618 } 619 620 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai, 621 int ssi_lane) 622 { 623 if (ssi_lane > 0) 624 rdai->ssi_lane = ssi_lane; 625 626 return rdai->ssi_lane; 627 } 628 629 int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width) 630 { 631 if (width > 0) 632 rdai->chan_width = width; 633 634 return rdai->chan_width; 635 } 636 637 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 638 { 639 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 640 return NULL; 641 642 return priv->rdai + id; 643 } 644 645 static struct snd_soc_dai_driver 646 *rsnd_daidrv_get(struct rsnd_priv *priv, int id) 647 { 648 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 649 return NULL; 650 651 return priv->daidrv + id; 652 } 653 654 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 655 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 656 { 657 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 658 659 return rsnd_rdai_get(priv, dai->id); 660 } 661 662 /* 663 * rsnd_soc_dai functions 664 */ 665 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 666 { 667 struct snd_pcm_substream *substream = io->substream; 668 669 /* 670 * this function should be called... 671 * 672 * - if rsnd_dai_pointer_update() returns true 673 * - without spin lock 674 */ 675 676 snd_pcm_period_elapsed(substream); 677 } 678 679 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 680 struct snd_pcm_substream *substream) 681 { 682 io->substream = substream; 683 } 684 685 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 686 { 687 io->substream = NULL; 688 } 689 690 static 691 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 692 { 693 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 694 695 return asoc_rtd_to_cpu(rtd, 0); 696 } 697 698 static 699 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 700 struct snd_pcm_substream *substream) 701 { 702 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 703 return &rdai->playback; 704 else 705 return &rdai->capture; 706 } 707 708 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 709 struct snd_soc_dai *dai) 710 { 711 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 712 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 713 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 714 int ret; 715 unsigned long flags; 716 717 spin_lock_irqsave(&priv->lock, flags); 718 719 switch (cmd) { 720 case SNDRV_PCM_TRIGGER_START: 721 case SNDRV_PCM_TRIGGER_RESUME: 722 ret = rsnd_dai_call(init, io, priv); 723 if (ret < 0) 724 goto dai_trigger_end; 725 726 ret = rsnd_dai_call(start, io, priv); 727 if (ret < 0) 728 goto dai_trigger_end; 729 730 ret = rsnd_dai_call(irq, io, priv, 1); 731 if (ret < 0) 732 goto dai_trigger_end; 733 734 break; 735 case SNDRV_PCM_TRIGGER_STOP: 736 case SNDRV_PCM_TRIGGER_SUSPEND: 737 ret = rsnd_dai_call(irq, io, priv, 0); 738 739 ret |= rsnd_dai_call(stop, io, priv); 740 741 ret |= rsnd_dai_call(quit, io, priv); 742 743 break; 744 default: 745 ret = -EINVAL; 746 } 747 748 dai_trigger_end: 749 spin_unlock_irqrestore(&priv->lock, flags); 750 751 return ret; 752 } 753 754 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 755 { 756 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 757 758 /* set clock master for audio interface */ 759 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 760 case SND_SOC_DAIFMT_BC_FC: 761 rdai->clk_master = 0; 762 break; 763 case SND_SOC_DAIFMT_BP_FP: 764 rdai->clk_master = 1; /* cpu is master */ 765 break; 766 default: 767 return -EINVAL; 768 } 769 770 /* set format */ 771 rdai->bit_clk_inv = 0; 772 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 773 case SND_SOC_DAIFMT_I2S: 774 rdai->sys_delay = 0; 775 rdai->data_alignment = 0; 776 rdai->frm_clk_inv = 0; 777 break; 778 case SND_SOC_DAIFMT_LEFT_J: 779 case SND_SOC_DAIFMT_DSP_B: 780 rdai->sys_delay = 1; 781 rdai->data_alignment = 0; 782 rdai->frm_clk_inv = 1; 783 break; 784 case SND_SOC_DAIFMT_RIGHT_J: 785 rdai->sys_delay = 1; 786 rdai->data_alignment = 1; 787 rdai->frm_clk_inv = 1; 788 break; 789 case SND_SOC_DAIFMT_DSP_A: 790 rdai->sys_delay = 0; 791 rdai->data_alignment = 0; 792 rdai->frm_clk_inv = 1; 793 break; 794 } 795 796 /* set clock inversion */ 797 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 798 case SND_SOC_DAIFMT_NB_IF: 799 rdai->frm_clk_inv = !rdai->frm_clk_inv; 800 break; 801 case SND_SOC_DAIFMT_IB_NF: 802 rdai->bit_clk_inv = !rdai->bit_clk_inv; 803 break; 804 case SND_SOC_DAIFMT_IB_IF: 805 rdai->bit_clk_inv = !rdai->bit_clk_inv; 806 rdai->frm_clk_inv = !rdai->frm_clk_inv; 807 break; 808 case SND_SOC_DAIFMT_NB_NF: 809 default: 810 break; 811 } 812 813 return 0; 814 } 815 816 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 817 u32 tx_mask, u32 rx_mask, 818 int slots, int slot_width) 819 { 820 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 821 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 822 struct device *dev = rsnd_priv_to_dev(priv); 823 824 switch (slot_width) { 825 case 16: 826 case 24: 827 case 32: 828 break; 829 default: 830 /* use default */ 831 /* 832 * Indicate warning if DT has "dai-tdm-slot-width" 833 * but the value was not expected. 834 */ 835 if (slot_width) 836 dev_warn(dev, "unsupported TDM slot width (%d), force to use default 32\n", 837 slot_width); 838 slot_width = 32; 839 } 840 841 switch (slots) { 842 case 2: 843 /* TDM Split Mode */ 844 case 6: 845 case 8: 846 /* TDM Extend Mode */ 847 rsnd_rdai_channels_set(rdai, slots); 848 rsnd_rdai_ssi_lane_set(rdai, 1); 849 rsnd_rdai_width_set(rdai, slot_width); 850 break; 851 default: 852 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 853 return -EINVAL; 854 } 855 856 return 0; 857 } 858 859 static unsigned int rsnd_soc_hw_channels_list[] = { 860 2, 6, 8, 861 }; 862 863 static unsigned int rsnd_soc_hw_rate_list[] = { 864 8000, 865 11025, 866 16000, 867 22050, 868 32000, 869 44100, 870 48000, 871 64000, 872 88200, 873 96000, 874 176400, 875 192000, 876 }; 877 878 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai, 879 unsigned int *list, int list_num, 880 struct snd_interval *baseline, struct snd_interval *iv, 881 struct rsnd_dai_stream *io, char *unit) 882 { 883 struct snd_interval p; 884 unsigned int rate; 885 int i; 886 887 snd_interval_any(&p); 888 p.min = UINT_MAX; 889 p.max = 0; 890 891 for (i = 0; i < list_num; i++) { 892 893 if (!snd_interval_test(iv, list[i])) 894 continue; 895 896 rate = rsnd_ssi_clk_query(rdai, 897 baseline->min, list[i], NULL); 898 if (rate > 0) { 899 p.min = min(p.min, list[i]); 900 p.max = max(p.max, list[i]); 901 } 902 903 rate = rsnd_ssi_clk_query(rdai, 904 baseline->max, list[i], NULL); 905 if (rate > 0) { 906 p.min = min(p.min, list[i]); 907 p.max = max(p.max, list[i]); 908 } 909 } 910 911 /* Indicate error once if it can't handle */ 912 if (!rsnd_flags_has(io, RSND_HW_RULE_ERR) && (p.min > p.max)) { 913 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 914 struct device *dev = rsnd_priv_to_dev(priv); 915 916 dev_warn(dev, "It can't handle %d %s <-> %d %s\n", 917 baseline->min, unit, baseline->max, unit); 918 rsnd_flags_set(io, RSND_HW_RULE_ERR); 919 } 920 921 return snd_interval_refine(iv, &p); 922 } 923 924 static int rsnd_soc_hw_rule_rate(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_rate_list, 943 ARRAY_SIZE(rsnd_soc_hw_rate_list), 944 &ic, ir, io, "ch"); 945 } 946 947 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params, 948 struct snd_pcm_hw_rule *rule) 949 { 950 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 951 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 952 struct snd_interval ic; 953 struct rsnd_dai_stream *io = rule->private; 954 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 955 956 /* 957 * possible sampling rate limitation is same as 958 * 2ch if it supports multi ssi 959 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 960 */ 961 ic = *ic_; 962 ic.min = 963 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 964 965 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list, 966 ARRAY_SIZE(rsnd_soc_hw_channels_list), 967 ir, &ic, io, "Hz"); 968 } 969 970 static const struct snd_pcm_hardware rsnd_pcm_hardware = { 971 .info = SNDRV_PCM_INFO_INTERLEAVED | 972 SNDRV_PCM_INFO_MMAP | 973 SNDRV_PCM_INFO_MMAP_VALID, 974 .buffer_bytes_max = 64 * 1024, 975 .period_bytes_min = 32, 976 .period_bytes_max = 8192, 977 .periods_min = 1, 978 .periods_max = 32, 979 .fifo_size = 256, 980 }; 981 982 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 983 struct snd_soc_dai *dai) 984 { 985 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 986 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 987 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint; 988 struct snd_pcm_runtime *runtime = substream->runtime; 989 unsigned int max_channels = rsnd_rdai_channels_get(rdai); 990 int i; 991 992 rsnd_flags_del(io, RSND_HW_RULE_ERR); 993 994 rsnd_dai_stream_init(io, substream); 995 996 /* 997 * Channel Limitation 998 * It depends on Platform design 999 */ 1000 constraint->list = rsnd_soc_hw_channels_list; 1001 constraint->count = 0; 1002 constraint->mask = 0; 1003 1004 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) { 1005 if (rsnd_soc_hw_channels_list[i] > max_channels) 1006 break; 1007 constraint->count = i + 1; 1008 } 1009 1010 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 1011 1012 snd_pcm_hw_constraint_list(runtime, 0, 1013 SNDRV_PCM_HW_PARAM_CHANNELS, constraint); 1014 1015 snd_pcm_hw_constraint_integer(runtime, 1016 SNDRV_PCM_HW_PARAM_PERIODS); 1017 1018 /* 1019 * Sampling Rate / Channel Limitation 1020 * It depends on Clock Master Mode 1021 */ 1022 if (rsnd_rdai_is_clk_master(rdai)) { 1023 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 1024 1025 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 1026 rsnd_soc_hw_rule_rate, 1027 is_play ? &rdai->playback : &rdai->capture, 1028 SNDRV_PCM_HW_PARAM_CHANNELS, -1); 1029 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 1030 rsnd_soc_hw_rule_channels, 1031 is_play ? &rdai->playback : &rdai->capture, 1032 SNDRV_PCM_HW_PARAM_RATE, -1); 1033 } 1034 1035 return 0; 1036 } 1037 1038 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 1039 struct snd_soc_dai *dai) 1040 { 1041 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1042 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 1043 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1044 1045 /* 1046 * call rsnd_dai_call without spinlock 1047 */ 1048 rsnd_dai_call(cleanup, io, priv); 1049 1050 rsnd_dai_stream_quit(io); 1051 } 1052 1053 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream, 1054 struct snd_soc_dai *dai) 1055 { 1056 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 1057 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1058 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1059 1060 return rsnd_dai_call(prepare, io, priv); 1061 } 1062 1063 static u64 rsnd_soc_dai_formats[] = { 1064 /* 1065 * 1st Priority 1066 * 1067 * Well tested formats. 1068 * Select below from Sound Card, not auto 1069 * SND_SOC_DAIFMT_CBC_CFC 1070 * SND_SOC_DAIFMT_CBP_CFP 1071 */ 1072 SND_SOC_POSSIBLE_DAIFMT_I2S | 1073 SND_SOC_POSSIBLE_DAIFMT_RIGHT_J | 1074 SND_SOC_POSSIBLE_DAIFMT_LEFT_J | 1075 SND_SOC_POSSIBLE_DAIFMT_NB_NF | 1076 SND_SOC_POSSIBLE_DAIFMT_NB_IF | 1077 SND_SOC_POSSIBLE_DAIFMT_IB_NF | 1078 SND_SOC_POSSIBLE_DAIFMT_IB_IF, 1079 /* 1080 * 2nd Priority 1081 * 1082 * Supported, but not well tested 1083 */ 1084 SND_SOC_POSSIBLE_DAIFMT_DSP_A | 1085 SND_SOC_POSSIBLE_DAIFMT_DSP_B, 1086 }; 1087 1088 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 1089 .startup = rsnd_soc_dai_startup, 1090 .shutdown = rsnd_soc_dai_shutdown, 1091 .trigger = rsnd_soc_dai_trigger, 1092 .set_fmt = rsnd_soc_dai_set_fmt, 1093 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 1094 .prepare = rsnd_soc_dai_prepare, 1095 .auto_selectable_formats = rsnd_soc_dai_formats, 1096 .num_auto_selectable_formats = ARRAY_SIZE(rsnd_soc_dai_formats), 1097 }; 1098 1099 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv, 1100 struct rsnd_dai_stream *io, 1101 struct device_node *dai_np) 1102 { 1103 struct device *dev = rsnd_priv_to_dev(priv); 1104 struct device_node *ssiu_np = rsnd_ssiu_of_node(priv); 1105 struct device_node *np; 1106 int is_play = rsnd_io_is_play(io); 1107 int i; 1108 1109 if (!ssiu_np) 1110 return; 1111 1112 /* 1113 * This driver assumes that it is TDM Split mode 1114 * if it includes ssiu node 1115 */ 1116 for (i = 0;; i++) { 1117 struct device_node *node = is_play ? 1118 of_parse_phandle(dai_np, "playback", i) : 1119 of_parse_phandle(dai_np, "capture", i); 1120 1121 if (!node) 1122 break; 1123 1124 for_each_child_of_node(ssiu_np, np) { 1125 if (np == node) { 1126 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT); 1127 dev_dbg(dev, "%s is part of TDM Split\n", io->name); 1128 } 1129 } 1130 1131 of_node_put(node); 1132 } 1133 1134 of_node_put(ssiu_np); 1135 } 1136 1137 static void rsnd_parse_connect_simple(struct rsnd_priv *priv, 1138 struct rsnd_dai_stream *io, 1139 struct device_node *dai_np) 1140 { 1141 if (!rsnd_io_to_mod_ssi(io)) 1142 return; 1143 1144 rsnd_parse_tdm_split_mode(priv, io, dai_np); 1145 } 1146 1147 static void rsnd_parse_connect_graph(struct rsnd_priv *priv, 1148 struct rsnd_dai_stream *io, 1149 struct device_node *endpoint) 1150 { 1151 struct device *dev = rsnd_priv_to_dev(priv); 1152 struct device_node *remote_node; 1153 1154 if (!rsnd_io_to_mod_ssi(io)) 1155 return; 1156 1157 remote_node = of_graph_get_remote_port_parent(endpoint); 1158 1159 /* HDMI0 */ 1160 if (strstr(remote_node->full_name, "hdmi@fead0000")) { 1161 rsnd_flags_set(io, RSND_STREAM_HDMI0); 1162 dev_dbg(dev, "%s connected to HDMI0\n", io->name); 1163 } 1164 1165 /* HDMI1 */ 1166 if (strstr(remote_node->full_name, "hdmi@feae0000")) { 1167 rsnd_flags_set(io, RSND_STREAM_HDMI1); 1168 dev_dbg(dev, "%s connected to HDMI1\n", io->name); 1169 } 1170 1171 rsnd_parse_tdm_split_mode(priv, io, endpoint); 1172 1173 of_node_put(remote_node); 1174 } 1175 1176 void rsnd_parse_connect_common(struct rsnd_dai *rdai, char *name, 1177 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 1178 struct device_node *node, 1179 struct device_node *playback, 1180 struct device_node *capture) 1181 { 1182 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 1183 struct device *dev = rsnd_priv_to_dev(priv); 1184 struct device_node *np; 1185 int i; 1186 1187 if (!node) 1188 return; 1189 1190 i = 0; 1191 for_each_child_of_node(node, np) { 1192 struct rsnd_mod *mod; 1193 1194 i = rsnd_node_fixed_index(dev, np, name, i); 1195 if (i < 0) { 1196 of_node_put(np); 1197 break; 1198 } 1199 1200 mod = mod_get(priv, i); 1201 1202 if (np == playback) 1203 rsnd_dai_connect(mod, &rdai->playback, mod->type); 1204 if (np == capture) 1205 rsnd_dai_connect(mod, &rdai->capture, mod->type); 1206 i++; 1207 } 1208 1209 of_node_put(node); 1210 } 1211 1212 int rsnd_node_fixed_index(struct device *dev, struct device_node *node, char *name, int idx) 1213 { 1214 char node_name[16]; 1215 1216 /* 1217 * rsnd is assuming each device nodes are sequential numbering, 1218 * but some of them are not. 1219 * This function adjusts index for it. 1220 * 1221 * ex) 1222 * Normal case, special case 1223 * ssi-0 1224 * ssi-1 1225 * ssi-2 1226 * ssi-3 ssi-3 1227 * ssi-4 ssi-4 1228 * ... 1229 * 1230 * assume Max 64 node 1231 */ 1232 for (; idx < 64; idx++) { 1233 snprintf(node_name, sizeof(node_name), "%s-%d", name, idx); 1234 1235 if (strncmp(node_name, of_node_full_name(node), sizeof(node_name)) == 0) 1236 return idx; 1237 } 1238 1239 dev_err(dev, "strange node numbering (%s)", 1240 of_node_full_name(node)); 1241 return -EINVAL; 1242 } 1243 1244 int rsnd_node_count(struct rsnd_priv *priv, struct device_node *node, char *name) 1245 { 1246 struct device *dev = rsnd_priv_to_dev(priv); 1247 struct device_node *np; 1248 int i; 1249 1250 i = 0; 1251 for_each_child_of_node(node, np) { 1252 i = rsnd_node_fixed_index(dev, np, name, i); 1253 if (i < 0) { 1254 of_node_put(np); 1255 return 0; 1256 } 1257 i++; 1258 } 1259 1260 return i; 1261 } 1262 1263 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv, 1264 int *is_graph) 1265 { 1266 struct device *dev = rsnd_priv_to_dev(priv); 1267 struct device_node *np = dev->of_node; 1268 struct device_node *dai_node; 1269 struct device_node *ret; 1270 1271 *is_graph = 0; 1272 1273 /* 1274 * parse both previous dai (= rcar_sound,dai), and 1275 * graph dai (= ports/port) 1276 */ 1277 dai_node = of_get_child_by_name(np, RSND_NODE_DAI); 1278 if (dai_node) { 1279 ret = dai_node; 1280 goto of_node_compatible; 1281 } 1282 1283 ret = np; 1284 1285 dai_node = of_graph_get_next_endpoint(np, NULL); 1286 if (dai_node) 1287 goto of_node_graph; 1288 1289 return NULL; 1290 1291 of_node_graph: 1292 *is_graph = 1; 1293 of_node_compatible: 1294 of_node_put(dai_node); 1295 1296 return ret; 1297 } 1298 1299 1300 #define PREALLOC_BUFFER (32 * 1024) 1301 #define PREALLOC_BUFFER_MAX (32 * 1024) 1302 1303 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd, 1304 struct rsnd_dai_stream *io, 1305 int stream) 1306 { 1307 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1308 struct device *dev = rsnd_priv_to_dev(priv); 1309 struct snd_pcm_substream *substream; 1310 1311 /* 1312 * use Audio-DMAC dev if we can use IPMMU 1313 * see 1314 * rsnd_dmaen_attach() 1315 */ 1316 if (io->dmac_dev) 1317 dev = io->dmac_dev; 1318 1319 for (substream = rtd->pcm->streams[stream].substream; 1320 substream; 1321 substream = substream->next) { 1322 snd_pcm_set_managed_buffer(substream, 1323 SNDRV_DMA_TYPE_DEV, 1324 dev, 1325 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1326 } 1327 1328 return 0; 1329 } 1330 1331 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd, 1332 struct snd_soc_dai *dai) 1333 { 1334 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1335 int ret; 1336 1337 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1338 if (ret) 1339 return ret; 1340 1341 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1342 if (ret) 1343 return ret; 1344 1345 ret = rsnd_preallocate_pages(rtd, &rdai->playback, 1346 SNDRV_PCM_STREAM_PLAYBACK); 1347 if (ret) 1348 return ret; 1349 1350 ret = rsnd_preallocate_pages(rtd, &rdai->capture, 1351 SNDRV_PCM_STREAM_CAPTURE); 1352 if (ret) 1353 return ret; 1354 1355 return 0; 1356 } 1357 1358 static void __rsnd_dai_probe(struct rsnd_priv *priv, 1359 struct device_node *dai_np, 1360 int dai_i) 1361 { 1362 struct rsnd_dai_stream *io_playback; 1363 struct rsnd_dai_stream *io_capture; 1364 struct snd_soc_dai_driver *drv; 1365 struct rsnd_dai *rdai; 1366 struct device *dev = rsnd_priv_to_dev(priv); 1367 int playback_exist = 0, capture_exist = 0; 1368 int io_i; 1369 1370 rdai = rsnd_rdai_get(priv, dai_i); 1371 drv = rsnd_daidrv_get(priv, dai_i); 1372 io_playback = &rdai->playback; 1373 io_capture = &rdai->capture; 1374 1375 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 1376 1377 rdai->priv = priv; 1378 drv->name = rdai->name; 1379 drv->ops = &rsnd_soc_dai_ops; 1380 drv->pcm_new = rsnd_pcm_new; 1381 1382 io_playback->rdai = rdai; 1383 io_capture->rdai = rdai; 1384 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */ 1385 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */ 1386 rsnd_rdai_width_set(rdai, 32); /* default 32bit width */ 1387 1388 for (io_i = 0;; io_i++) { 1389 struct device_node *playback = of_parse_phandle(dai_np, "playback", io_i); 1390 struct device_node *capture = of_parse_phandle(dai_np, "capture", io_i); 1391 1392 if (!playback && !capture) 1393 break; 1394 1395 if (io_i == 0) { 1396 /* check whether playback/capture property exists */ 1397 if (playback) 1398 playback_exist = 1; 1399 if (capture) 1400 capture_exist = 1; 1401 } 1402 1403 rsnd_parse_connect_ssi(rdai, playback, capture); 1404 rsnd_parse_connect_ssiu(rdai, playback, capture); 1405 rsnd_parse_connect_src(rdai, playback, capture); 1406 rsnd_parse_connect_ctu(rdai, playback, capture); 1407 rsnd_parse_connect_mix(rdai, playback, capture); 1408 rsnd_parse_connect_dvc(rdai, playback, capture); 1409 1410 of_node_put(playback); 1411 of_node_put(capture); 1412 } 1413 1414 if (playback_exist) { 1415 snprintf(io_playback->name, RSND_DAI_NAME_SIZE, "DAI%d Playback", dai_i); 1416 drv->playback.rates = RSND_RATES; 1417 drv->playback.formats = RSND_FMTS; 1418 drv->playback.channels_min = 2; 1419 drv->playback.channels_max = 8; 1420 drv->playback.stream_name = io_playback->name; 1421 } 1422 if (capture_exist) { 1423 snprintf(io_capture->name, RSND_DAI_NAME_SIZE, "DAI%d Capture", dai_i); 1424 drv->capture.rates = RSND_RATES; 1425 drv->capture.formats = RSND_FMTS; 1426 drv->capture.channels_min = 2; 1427 drv->capture.channels_max = 8; 1428 drv->capture.stream_name = io_capture->name; 1429 } 1430 1431 if (rsnd_ssi_is_pin_sharing(io_capture) || 1432 rsnd_ssi_is_pin_sharing(io_playback)) { 1433 /* should have symmetric_rate if pin sharing */ 1434 drv->symmetric_rate = 1; 1435 } 1436 1437 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 1438 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 1439 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 1440 } 1441 1442 static int rsnd_dai_probe(struct rsnd_priv *priv) 1443 { 1444 struct device_node *dai_node; 1445 struct device_node *dai_np; 1446 struct snd_soc_dai_driver *rdrv; 1447 struct device *dev = rsnd_priv_to_dev(priv); 1448 struct rsnd_dai *rdai; 1449 int nr; 1450 int is_graph; 1451 int dai_i; 1452 1453 dai_node = rsnd_dai_of_node(priv, &is_graph); 1454 if (is_graph) 1455 nr = of_graph_get_endpoint_count(dai_node); 1456 else 1457 nr = of_get_child_count(dai_node); 1458 1459 if (!nr) 1460 return -EINVAL; 1461 1462 rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL); 1463 rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL); 1464 if (!rdrv || !rdai) 1465 return -ENOMEM; 1466 1467 priv->rdai_nr = nr; 1468 priv->daidrv = rdrv; 1469 priv->rdai = rdai; 1470 1471 /* 1472 * parse all dai 1473 */ 1474 dai_i = 0; 1475 if (is_graph) { 1476 for_each_endpoint_of_node(dai_node, dai_np) { 1477 __rsnd_dai_probe(priv, dai_np, dai_i); 1478 if (rsnd_is_gen3(priv) || rsnd_is_gen4(priv)) { 1479 rdai = rsnd_rdai_get(priv, dai_i); 1480 1481 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np); 1482 rsnd_parse_connect_graph(priv, &rdai->capture, dai_np); 1483 } 1484 dai_i++; 1485 } 1486 } else { 1487 for_each_child_of_node(dai_node, dai_np) { 1488 __rsnd_dai_probe(priv, dai_np, dai_i); 1489 if (rsnd_is_gen3(priv) || rsnd_is_gen4(priv)) { 1490 rdai = rsnd_rdai_get(priv, dai_i); 1491 1492 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np); 1493 rsnd_parse_connect_simple(priv, &rdai->capture, dai_np); 1494 } 1495 dai_i++; 1496 } 1497 } 1498 1499 return 0; 1500 } 1501 1502 /* 1503 * pcm ops 1504 */ 1505 static int rsnd_hw_update(struct snd_pcm_substream *substream, 1506 struct snd_pcm_hw_params *hw_params) 1507 { 1508 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1509 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1510 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1511 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1512 unsigned long flags; 1513 int ret; 1514 1515 spin_lock_irqsave(&priv->lock, flags); 1516 if (hw_params) 1517 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 1518 else 1519 ret = rsnd_dai_call(hw_free, io, substream); 1520 spin_unlock_irqrestore(&priv->lock, flags); 1521 1522 return ret; 1523 } 1524 1525 static int rsnd_hw_params(struct snd_soc_component *component, 1526 struct snd_pcm_substream *substream, 1527 struct snd_pcm_hw_params *hw_params) 1528 { 1529 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1530 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1531 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1532 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); 1533 1534 /* 1535 * rsnd assumes that it might be used under DPCM if user want to use 1536 * channel / rate convert. Then, rsnd should be FE. 1537 * And then, this function will be called *after* BE settings. 1538 * this means, each BE already has fixuped hw_params. 1539 * see 1540 * dpcm_fe_dai_hw_params() 1541 * dpcm_be_dai_hw_params() 1542 */ 1543 io->converted_rate = 0; 1544 io->converted_chan = 0; 1545 if (fe->dai_link->dynamic) { 1546 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1547 struct device *dev = rsnd_priv_to_dev(priv); 1548 struct snd_soc_dpcm *dpcm; 1549 int stream = substream->stream; 1550 1551 for_each_dpcm_be(fe, stream, dpcm) { 1552 struct snd_soc_pcm_runtime *be = dpcm->be; 1553 struct snd_pcm_hw_params *be_params = &be->dpcm[stream].hw_params; 1554 1555 if (params_channels(hw_params) != params_channels(be_params)) 1556 io->converted_chan = params_channels(be_params); 1557 if (params_rate(hw_params) != params_rate(be_params)) 1558 io->converted_rate = params_rate(be_params); 1559 } 1560 if (io->converted_chan) 1561 dev_dbg(dev, "convert channels = %d\n", io->converted_chan); 1562 if (io->converted_rate) { 1563 /* 1564 * SRC supports convert rates from params_rate(hw_params)/k_down 1565 * to params_rate(hw_params)*k_up, where k_up is always 6, and 1566 * k_down depends on number of channels and SRC unit. 1567 * So all SRC units can upsample audio up to 6 times regardless 1568 * its number of channels. And all SRC units can downsample 1569 * 2 channel audio up to 6 times too. 1570 */ 1571 int k_up = 6; 1572 int k_down = 6; 1573 int channel; 1574 struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io); 1575 1576 dev_dbg(dev, "convert rate = %d\n", io->converted_rate); 1577 1578 channel = io->converted_chan ? io->converted_chan : 1579 params_channels(hw_params); 1580 1581 switch (rsnd_mod_id(src_mod)) { 1582 /* 1583 * SRC0 can downsample 4, 6 and 8 channel audio up to 4 times. 1584 * SRC1, SRC3 and SRC4 can downsample 4 channel audio 1585 * up to 4 times. 1586 * SRC1, SRC3 and SRC4 can downsample 6 and 8 channel audio 1587 * no more than twice. 1588 */ 1589 case 1: 1590 case 3: 1591 case 4: 1592 if (channel > 4) { 1593 k_down = 2; 1594 break; 1595 } 1596 fallthrough; 1597 case 0: 1598 if (channel > 2) 1599 k_down = 4; 1600 break; 1601 1602 /* Other SRC units do not support more than 2 channels */ 1603 default: 1604 if (channel > 2) 1605 return -EINVAL; 1606 } 1607 1608 if (params_rate(hw_params) > io->converted_rate * k_down) { 1609 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->min = 1610 io->converted_rate * k_down; 1611 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->max = 1612 io->converted_rate * k_down; 1613 hw_params->cmask |= SNDRV_PCM_HW_PARAM_RATE; 1614 } else if (params_rate(hw_params) * k_up < io->converted_rate) { 1615 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->min = 1616 DIV_ROUND_UP(io->converted_rate, k_up); 1617 hw_param_interval(hw_params, SNDRV_PCM_HW_PARAM_RATE)->max = 1618 DIV_ROUND_UP(io->converted_rate, k_up); 1619 hw_params->cmask |= SNDRV_PCM_HW_PARAM_RATE; 1620 } 1621 1622 /* 1623 * TBD: Max SRC input and output rates also depend on number 1624 * of channels and SRC unit: 1625 * SRC1, SRC3 and SRC4 do not support more than 128kHz 1626 * for 6 channel and 96kHz for 8 channel audio. 1627 * Perhaps this function should return EINVAL if the input or 1628 * the output rate exceeds the limitation. 1629 */ 1630 } 1631 } 1632 1633 return rsnd_hw_update(substream, hw_params); 1634 } 1635 1636 static int rsnd_hw_free(struct snd_soc_component *component, 1637 struct snd_pcm_substream *substream) 1638 { 1639 return rsnd_hw_update(substream, NULL); 1640 } 1641 1642 static snd_pcm_uframes_t rsnd_pointer(struct snd_soc_component *component, 1643 struct snd_pcm_substream *substream) 1644 { 1645 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1646 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1647 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1648 snd_pcm_uframes_t pointer = 0; 1649 1650 rsnd_dai_call(pointer, io, &pointer); 1651 1652 return pointer; 1653 } 1654 1655 /* 1656 * snd_kcontrol 1657 */ 1658 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 1659 struct snd_ctl_elem_info *uinfo) 1660 { 1661 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1662 1663 if (cfg->texts) { 1664 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 1665 uinfo->count = cfg->size; 1666 uinfo->value.enumerated.items = cfg->max; 1667 if (uinfo->value.enumerated.item >= cfg->max) 1668 uinfo->value.enumerated.item = cfg->max - 1; 1669 strscpy(uinfo->value.enumerated.name, 1670 cfg->texts[uinfo->value.enumerated.item], 1671 sizeof(uinfo->value.enumerated.name)); 1672 } else { 1673 uinfo->count = cfg->size; 1674 uinfo->value.integer.min = 0; 1675 uinfo->value.integer.max = cfg->max; 1676 uinfo->type = (cfg->max == 1) ? 1677 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 1678 SNDRV_CTL_ELEM_TYPE_INTEGER; 1679 } 1680 1681 return 0; 1682 } 1683 1684 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 1685 struct snd_ctl_elem_value *uc) 1686 { 1687 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1688 int i; 1689 1690 for (i = 0; i < cfg->size; i++) 1691 if (cfg->texts) 1692 uc->value.enumerated.item[i] = cfg->val[i]; 1693 else 1694 uc->value.integer.value[i] = cfg->val[i]; 1695 1696 return 0; 1697 } 1698 1699 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 1700 struct snd_ctl_elem_value *uc) 1701 { 1702 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1703 int i, change = 0; 1704 1705 if (!cfg->accept(cfg->io)) 1706 return 0; 1707 1708 for (i = 0; i < cfg->size; i++) { 1709 if (cfg->texts) { 1710 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 1711 cfg->val[i] = uc->value.enumerated.item[i]; 1712 } else { 1713 change |= (uc->value.integer.value[i] != cfg->val[i]); 1714 cfg->val[i] = uc->value.integer.value[i]; 1715 } 1716 } 1717 1718 if (change && cfg->update) 1719 cfg->update(cfg->io, cfg->mod); 1720 1721 return change; 1722 } 1723 1724 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io) 1725 { 1726 return 1; 1727 } 1728 1729 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io) 1730 { 1731 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 1732 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1733 struct device *dev = rsnd_priv_to_dev(priv); 1734 1735 if (!runtime) { 1736 dev_warn(dev, "Can't update kctrl when idle\n"); 1737 return 0; 1738 } 1739 1740 return 1; 1741 } 1742 1743 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg) 1744 { 1745 cfg->cfg.val = cfg->val; 1746 1747 return &cfg->cfg; 1748 } 1749 1750 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg) 1751 { 1752 cfg->cfg.val = &cfg->val; 1753 1754 return &cfg->cfg; 1755 } 1756 1757 const char * const volume_ramp_rate[] = { 1758 "128 dB/1 step", /* 00000 */ 1759 "64 dB/1 step", /* 00001 */ 1760 "32 dB/1 step", /* 00010 */ 1761 "16 dB/1 step", /* 00011 */ 1762 "8 dB/1 step", /* 00100 */ 1763 "4 dB/1 step", /* 00101 */ 1764 "2 dB/1 step", /* 00110 */ 1765 "1 dB/1 step", /* 00111 */ 1766 "0.5 dB/1 step", /* 01000 */ 1767 "0.25 dB/1 step", /* 01001 */ 1768 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */ 1769 "0.125 dB/2 steps", /* 01011 */ 1770 "0.125 dB/4 steps", /* 01100 */ 1771 "0.125 dB/8 steps", /* 01101 */ 1772 "0.125 dB/16 steps", /* 01110 */ 1773 "0.125 dB/32 steps", /* 01111 */ 1774 "0.125 dB/64 steps", /* 10000 */ 1775 "0.125 dB/128 steps", /* 10001 */ 1776 "0.125 dB/256 steps", /* 10010 */ 1777 "0.125 dB/512 steps", /* 10011 */ 1778 "0.125 dB/1024 steps", /* 10100 */ 1779 "0.125 dB/2048 steps", /* 10101 */ 1780 "0.125 dB/4096 steps", /* 10110 */ 1781 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */ 1782 }; 1783 1784 int rsnd_kctrl_new(struct rsnd_mod *mod, 1785 struct rsnd_dai_stream *io, 1786 struct snd_soc_pcm_runtime *rtd, 1787 const unsigned char *name, 1788 int (*accept)(struct rsnd_dai_stream *io), 1789 void (*update)(struct rsnd_dai_stream *io, 1790 struct rsnd_mod *mod), 1791 struct rsnd_kctrl_cfg *cfg, 1792 const char * const *texts, 1793 int size, 1794 u32 max) 1795 { 1796 struct snd_card *card = rtd->card->snd_card; 1797 struct snd_kcontrol *kctrl; 1798 struct snd_kcontrol_new knew = { 1799 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1800 .name = name, 1801 .info = rsnd_kctrl_info, 1802 .index = rtd->num, 1803 .get = rsnd_kctrl_get, 1804 .put = rsnd_kctrl_put, 1805 }; 1806 int ret; 1807 1808 /* 1809 * 1) Avoid duplicate register for DVC with MIX case 1810 * 2) Allow duplicate register for MIX 1811 * 3) re-register if card was rebinded 1812 */ 1813 list_for_each_entry(kctrl, &card->controls, list) { 1814 struct rsnd_kctrl_cfg *c = kctrl->private_data; 1815 1816 if (c == cfg) 1817 return 0; 1818 } 1819 1820 if (size > RSND_MAX_CHANNELS) 1821 return -EINVAL; 1822 1823 kctrl = snd_ctl_new1(&knew, cfg); 1824 if (!kctrl) 1825 return -ENOMEM; 1826 1827 ret = snd_ctl_add(card, kctrl); 1828 if (ret < 0) 1829 return ret; 1830 1831 cfg->texts = texts; 1832 cfg->max = max; 1833 cfg->size = size; 1834 cfg->accept = accept; 1835 cfg->update = update; 1836 cfg->card = card; 1837 cfg->kctrl = kctrl; 1838 cfg->io = io; 1839 cfg->mod = mod; 1840 1841 return 0; 1842 } 1843 1844 /* 1845 * snd_soc_component 1846 */ 1847 static const struct snd_soc_component_driver rsnd_soc_component = { 1848 .name = "rsnd", 1849 .probe = rsnd_debugfs_probe, 1850 .hw_params = rsnd_hw_params, 1851 .hw_free = rsnd_hw_free, 1852 .pointer = rsnd_pointer, 1853 .legacy_dai_naming = 1, 1854 }; 1855 1856 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1857 struct rsnd_dai_stream *io) 1858 { 1859 int ret; 1860 1861 ret = rsnd_dai_call(probe, io, priv); 1862 if (ret == -EAGAIN) { 1863 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1864 struct rsnd_mod *mod; 1865 int i; 1866 1867 /* 1868 * Fallback to PIO mode 1869 */ 1870 1871 /* 1872 * call "remove" for SSI/SRC/DVC 1873 * SSI will be switch to PIO mode if it was DMA mode 1874 * see 1875 * rsnd_dma_init() 1876 * rsnd_ssi_fallback() 1877 */ 1878 rsnd_dai_call(remove, io, priv); 1879 1880 /* 1881 * remove all mod from io 1882 * and, re connect ssi 1883 */ 1884 for_each_rsnd_mod(i, mod, io) 1885 rsnd_dai_disconnect(mod, io, i); 1886 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1887 1888 /* 1889 * fallback 1890 */ 1891 rsnd_dai_call(fallback, io, priv); 1892 1893 /* 1894 * retry to "probe". 1895 * DAI has SSI which is PIO mode only now. 1896 */ 1897 ret = rsnd_dai_call(probe, io, priv); 1898 } 1899 1900 return ret; 1901 } 1902 1903 /* 1904 * rsnd probe 1905 */ 1906 static int rsnd_probe(struct platform_device *pdev) 1907 { 1908 struct rsnd_priv *priv; 1909 struct device *dev = &pdev->dev; 1910 struct rsnd_dai *rdai; 1911 int (*probe_func[])(struct rsnd_priv *priv) = { 1912 rsnd_gen_probe, 1913 rsnd_dma_probe, 1914 rsnd_ssi_probe, 1915 rsnd_ssiu_probe, 1916 rsnd_src_probe, 1917 rsnd_ctu_probe, 1918 rsnd_mix_probe, 1919 rsnd_dvc_probe, 1920 rsnd_cmd_probe, 1921 rsnd_adg_probe, 1922 rsnd_dai_probe, 1923 }; 1924 int ret, i; 1925 1926 /* 1927 * init priv data 1928 */ 1929 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1930 if (!priv) 1931 return -ENODEV; 1932 1933 priv->pdev = pdev; 1934 priv->flags = (unsigned long)of_device_get_match_data(dev); 1935 spin_lock_init(&priv->lock); 1936 1937 /* 1938 * init each module 1939 */ 1940 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1941 ret = probe_func[i](priv); 1942 if (ret) 1943 return ret; 1944 } 1945 1946 for_each_rsnd_dai(rdai, priv, i) { 1947 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1948 if (ret) 1949 goto exit_snd_probe; 1950 1951 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1952 if (ret) 1953 goto exit_snd_probe; 1954 } 1955 1956 dev_set_drvdata(dev, priv); 1957 1958 /* 1959 * asoc register 1960 */ 1961 ret = devm_snd_soc_register_component(dev, &rsnd_soc_component, 1962 priv->daidrv, rsnd_rdai_nr(priv)); 1963 if (ret < 0) { 1964 dev_err(dev, "cannot snd dai register\n"); 1965 goto exit_snd_probe; 1966 } 1967 1968 pm_runtime_enable(dev); 1969 1970 dev_info(dev, "probed\n"); 1971 return ret; 1972 1973 exit_snd_probe: 1974 for_each_rsnd_dai(rdai, priv, i) { 1975 rsnd_dai_call(remove, &rdai->playback, priv); 1976 rsnd_dai_call(remove, &rdai->capture, priv); 1977 } 1978 1979 /* 1980 * adg is very special mod which can't use rsnd_dai_call(remove), 1981 * and it registers ADG clock on probe. 1982 * It should be unregister if probe failed. 1983 * Mainly it is assuming -EPROBE_DEFER case 1984 */ 1985 rsnd_adg_remove(priv); 1986 1987 return ret; 1988 } 1989 1990 static void rsnd_remove(struct platform_device *pdev) 1991 { 1992 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1993 struct rsnd_dai *rdai; 1994 void (*remove_func[])(struct rsnd_priv *priv) = { 1995 rsnd_ssi_remove, 1996 rsnd_ssiu_remove, 1997 rsnd_src_remove, 1998 rsnd_ctu_remove, 1999 rsnd_mix_remove, 2000 rsnd_dvc_remove, 2001 rsnd_cmd_remove, 2002 rsnd_adg_remove, 2003 }; 2004 int i; 2005 2006 pm_runtime_disable(&pdev->dev); 2007 2008 for_each_rsnd_dai(rdai, priv, i) { 2009 int ret; 2010 2011 ret = rsnd_dai_call(remove, &rdai->playback, priv); 2012 if (ret) 2013 dev_warn(&pdev->dev, "Failed to remove playback dai #%d\n", i); 2014 2015 ret = rsnd_dai_call(remove, &rdai->capture, priv); 2016 if (ret) 2017 dev_warn(&pdev->dev, "Failed to remove capture dai #%d\n", i); 2018 } 2019 2020 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 2021 remove_func[i](priv); 2022 } 2023 2024 static int __maybe_unused rsnd_suspend(struct device *dev) 2025 { 2026 struct rsnd_priv *priv = dev_get_drvdata(dev); 2027 2028 rsnd_adg_clk_disable(priv); 2029 2030 return 0; 2031 } 2032 2033 static int __maybe_unused rsnd_resume(struct device *dev) 2034 { 2035 struct rsnd_priv *priv = dev_get_drvdata(dev); 2036 2037 rsnd_adg_clk_enable(priv); 2038 2039 return 0; 2040 } 2041 2042 static const struct dev_pm_ops rsnd_pm_ops = { 2043 SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume) 2044 }; 2045 2046 static struct platform_driver rsnd_driver = { 2047 .driver = { 2048 .name = "rcar_sound", 2049 .pm = &rsnd_pm_ops, 2050 .of_match_table = rsnd_of_match, 2051 }, 2052 .probe = rsnd_probe, 2053 .remove_new = rsnd_remove, 2054 }; 2055 module_platform_driver(rsnd_driver); 2056 2057 MODULE_LICENSE("GPL v2"); 2058 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 2059 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 2060 MODULE_ALIAS("platform:rcar-pcm-audio"); 2061