1 /* 2 * Renesas R-Car SRU/SCU/SSIU/SSI support 3 * 4 * Copyright (C) 2013 Renesas Solutions Corp. 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * Based on fsi.c 8 * Kuninori Morimoto <morimoto.kuninori@renesas.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 /* 16 * Renesas R-Car sound device structure 17 * 18 * Gen1 19 * 20 * SRU : Sound Routing Unit 21 * - SRC : Sampling Rate Converter 22 * - CMD 23 * - CTU : Channel Count Conversion Unit 24 * - MIX : Mixer 25 * - DVC : Digital Volume and Mute Function 26 * - SSI : Serial Sound Interface 27 * 28 * Gen2 29 * 30 * SCU : Sampling Rate Converter Unit 31 * - SRC : Sampling Rate Converter 32 * - CMD 33 * - CTU : Channel Count Conversion Unit 34 * - MIX : Mixer 35 * - DVC : Digital Volume and Mute Function 36 * SSIU : Serial Sound Interface Unit 37 * - SSI : Serial Sound Interface 38 */ 39 40 /* 41 * driver data Image 42 * 43 * rsnd_priv 44 * | 45 * | ** this depends on Gen1/Gen2 46 * | 47 * +- gen 48 * | 49 * | ** these depend on data path 50 * | ** gen and platform data control it 51 * | 52 * +- rdai[0] 53 * | | sru ssiu ssi 54 * | +- playback -> [mod] -> [mod] -> [mod] -> ... 55 * | | 56 * | | sru ssiu ssi 57 * | +- capture -> [mod] -> [mod] -> [mod] -> ... 58 * | 59 * +- rdai[1] 60 * | | sru ssiu ssi 61 * | +- playback -> [mod] -> [mod] -> [mod] -> ... 62 * | | 63 * | | sru ssiu ssi 64 * | +- capture -> [mod] -> [mod] -> [mod] -> ... 65 * ... 66 * | 67 * | ** these control ssi 68 * | 69 * +- ssi 70 * | | 71 * | +- ssi[0] 72 * | +- ssi[1] 73 * | +- ssi[2] 74 * | ... 75 * | 76 * | ** these control src 77 * | 78 * +- src 79 * | 80 * +- src[0] 81 * +- src[1] 82 * +- src[2] 83 * ... 84 * 85 * 86 * for_each_rsnd_dai(xx, priv, xx) 87 * rdai[0] => rdai[1] => rdai[2] => ... 88 * 89 * for_each_rsnd_mod(xx, rdai, xx) 90 * [mod] => [mod] => [mod] => ... 91 * 92 * rsnd_dai_call(xxx, fn ) 93 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... 94 * 95 */ 96 #include <linux/pm_runtime.h> 97 #include "rsnd.h" 98 99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000 100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) 101 102 static const struct rsnd_of_data rsnd_of_data_gen1 = { 103 .flags = RSND_GEN1, 104 }; 105 106 static const struct rsnd_of_data rsnd_of_data_gen2 = { 107 .flags = RSND_GEN2, 108 }; 109 110 static const struct of_device_id rsnd_of_match[] = { 111 { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 }, 112 { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 }, 113 {}, 114 }; 115 MODULE_DEVICE_TABLE(of, rsnd_of_match); 116 117 /* 118 * rsnd_platform functions 119 */ 120 #define rsnd_platform_call(priv, dai, func, param...) \ 121 (!(priv->info->func) ? 0 : \ 122 priv->info->func(param)) 123 124 #define rsnd_is_enable_path(io, name) \ 125 ((io)->info ? (io)->info->name : NULL) 126 #define rsnd_info_id(priv, io, name) \ 127 ((io)->info->name - priv->info->name##_info) 128 129 /* 130 * rsnd_mod functions 131 */ 132 char *rsnd_mod_name(struct rsnd_mod *mod) 133 { 134 if (!mod || !mod->ops) 135 return "unknown"; 136 137 return mod->ops->name; 138 } 139 140 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 141 struct rsnd_mod *mod) 142 { 143 if (!mod || !mod->ops || !mod->ops->dma_req) 144 return NULL; 145 146 return mod->ops->dma_req(io, mod); 147 } 148 149 int rsnd_mod_init(struct rsnd_priv *priv, 150 struct rsnd_mod *mod, 151 struct rsnd_mod_ops *ops, 152 struct clk *clk, 153 enum rsnd_mod_type type, 154 int id) 155 { 156 int ret = clk_prepare(clk); 157 158 if (ret) 159 return ret; 160 161 mod->id = id; 162 mod->ops = ops; 163 mod->type = type; 164 mod->clk = clk; 165 mod->priv = priv; 166 167 return ret; 168 } 169 170 void rsnd_mod_quit(struct rsnd_mod *mod) 171 { 172 if (mod->clk) 173 clk_unprepare(mod->clk); 174 } 175 176 void rsnd_mod_interrupt(struct rsnd_mod *mod, 177 void (*callback)(struct rsnd_mod *mod, 178 struct rsnd_dai_stream *io)) 179 { 180 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 181 struct rsnd_dai_stream *io; 182 struct rsnd_dai *rdai; 183 int i, j; 184 185 for_each_rsnd_dai(rdai, priv, j) { 186 187 for (i = 0; i < RSND_MOD_MAX; i++) { 188 io = &rdai->playback; 189 if (mod == io->mod[i]) 190 callback(mod, io); 191 192 io = &rdai->capture; 193 if (mod == io->mod[i]) 194 callback(mod, io); 195 } 196 } 197 } 198 199 int rsnd_io_is_working(struct rsnd_dai_stream *io) 200 { 201 /* see rsnd_dai_stream_init/quit() */ 202 return !!io->substream; 203 } 204 205 /* 206 * ADINR function 207 */ 208 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 209 { 210 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 211 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 212 struct device *dev = rsnd_priv_to_dev(priv); 213 u32 adinr = runtime->channels; 214 215 switch (runtime->sample_bits) { 216 case 16: 217 adinr |= (8 << 16); 218 break; 219 case 32: 220 adinr |= (0 << 16); 221 break; 222 default: 223 dev_warn(dev, "not supported sample bits\n"); 224 return 0; 225 } 226 227 return adinr; 228 } 229 230 u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 231 { 232 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 233 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 234 struct device *dev = rsnd_priv_to_dev(priv); 235 u32 chan = runtime->channels; 236 237 switch (chan) { 238 case 1: 239 case 2: 240 case 4: 241 case 6: 242 case 8: 243 break; 244 default: 245 dev_warn(dev, "not supported channel\n"); 246 chan = 0; 247 break; 248 } 249 250 return chan; 251 } 252 253 /* 254 * DALIGN function 255 */ 256 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 257 { 258 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 259 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io); 260 struct rsnd_mod *target = src ? src : ssi; 261 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 262 u32 val = 0x76543210; 263 u32 mask = ~0; 264 265 mask <<= runtime->channels * 4; 266 val = val & mask; 267 268 switch (runtime->sample_bits) { 269 case 16: 270 val |= 0x67452301 & ~mask; 271 break; 272 case 32: 273 val |= 0x76543210 & ~mask; 274 break; 275 } 276 277 /* 278 * exchange channeles on SRC if possible, 279 * otherwise, R/L volume settings on DVC 280 * changes inverted channels 281 */ 282 if (mod == target) 283 return val; 284 else 285 return 0x76543210; 286 } 287 288 /* 289 * rsnd_dai functions 290 */ 291 #define __rsnd_mod_call(mod, io, func, param...) \ 292 ({ \ 293 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ 294 struct device *dev = rsnd_priv_to_dev(priv); \ 295 u32 mask = 0xF << __rsnd_mod_shift_##func; \ 296 u8 val = (mod->status >> __rsnd_mod_shift_##func) & 0xF; \ 297 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \ 298 int ret = 0; \ 299 int called = 0; \ 300 if (val == __rsnd_mod_call_##func) { \ 301 called = 1; \ 302 ret = (mod)->ops->func(mod, io, param); \ 303 } \ 304 mod->status = (mod->status & ~mask) + \ 305 (add << __rsnd_mod_shift_##func); \ 306 dev_dbg(dev, "%s[%d] 0x%08x %s\n", \ 307 rsnd_mod_name(mod), rsnd_mod_id(mod), mod->status, \ 308 called ? #func : ""); \ 309 ret; \ 310 }) 311 312 #define rsnd_mod_call(mod, io, func, param...) \ 313 (!(mod) ? -ENODEV : \ 314 !((mod)->ops->func) ? 0 : \ 315 __rsnd_mod_call(mod, io, func, param)) 316 317 #define rsnd_dai_call(fn, io, param...) \ 318 ({ \ 319 struct rsnd_mod *mod; \ 320 int ret = 0, i; \ 321 for (i = 0; i < RSND_MOD_MAX; i++) { \ 322 mod = (io)->mod[i]; \ 323 if (!mod) \ 324 continue; \ 325 ret = rsnd_mod_call(mod, io, fn, param); \ 326 if (ret < 0) \ 327 break; \ 328 } \ 329 ret; \ 330 }) 331 332 static int rsnd_dai_connect(struct rsnd_mod *mod, 333 struct rsnd_dai_stream *io) 334 { 335 struct rsnd_priv *priv; 336 struct device *dev; 337 338 if (!mod) 339 return -EIO; 340 341 priv = rsnd_mod_to_priv(mod); 342 dev = rsnd_priv_to_dev(priv); 343 344 io->mod[mod->type] = mod; 345 346 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 347 rsnd_mod_name(mod), rsnd_mod_id(mod), 348 rsnd_io_is_play(io) ? "Playback" : "Capture"); 349 350 return 0; 351 } 352 353 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 354 struct rsnd_dai_stream *io) 355 { 356 io->mod[mod->type] = NULL; 357 } 358 359 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 360 { 361 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 362 return NULL; 363 364 return priv->rdai + id; 365 } 366 367 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 368 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 369 { 370 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 371 372 return rsnd_rdai_get(priv, dai->id); 373 } 374 375 /* 376 * rsnd_soc_dai functions 377 */ 378 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) 379 { 380 struct snd_pcm_substream *substream = io->substream; 381 struct snd_pcm_runtime *runtime = substream->runtime; 382 int pos = io->byte_pos + additional; 383 384 pos %= (runtime->periods * io->byte_per_period); 385 386 return pos; 387 } 388 389 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) 390 { 391 io->byte_pos += byte; 392 393 if (io->byte_pos >= io->next_period_byte) { 394 struct snd_pcm_substream *substream = io->substream; 395 struct snd_pcm_runtime *runtime = substream->runtime; 396 397 io->period_pos++; 398 io->next_period_byte += io->byte_per_period; 399 400 if (io->period_pos >= runtime->periods) { 401 io->byte_pos = 0; 402 io->period_pos = 0; 403 io->next_period_byte = io->byte_per_period; 404 } 405 406 return true; 407 } 408 409 return false; 410 } 411 412 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 413 { 414 struct snd_pcm_substream *substream = io->substream; 415 416 /* 417 * this function should be called... 418 * 419 * - if rsnd_dai_pointer_update() returns true 420 * - without spin lock 421 */ 422 423 snd_pcm_period_elapsed(substream); 424 } 425 426 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 427 struct snd_pcm_substream *substream) 428 { 429 struct snd_pcm_runtime *runtime = substream->runtime; 430 431 io->substream = substream; 432 io->byte_pos = 0; 433 io->period_pos = 0; 434 io->byte_per_period = runtime->period_size * 435 runtime->channels * 436 samples_to_bytes(runtime, 1); 437 io->next_period_byte = io->byte_per_period; 438 } 439 440 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 441 { 442 io->substream = NULL; 443 } 444 445 static 446 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 447 { 448 struct snd_soc_pcm_runtime *rtd = substream->private_data; 449 450 return rtd->cpu_dai; 451 } 452 453 static 454 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 455 struct snd_pcm_substream *substream) 456 { 457 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 458 return &rdai->playback; 459 else 460 return &rdai->capture; 461 } 462 463 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 464 struct snd_soc_dai *dai) 465 { 466 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 467 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 468 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 469 int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io)); 470 int ret; 471 unsigned long flags; 472 473 spin_lock_irqsave(&priv->lock, flags); 474 475 switch (cmd) { 476 case SNDRV_PCM_TRIGGER_START: 477 rsnd_dai_stream_init(io, substream); 478 479 ret = rsnd_platform_call(priv, dai, start, ssi_id); 480 if (ret < 0) 481 goto dai_trigger_end; 482 483 ret = rsnd_dai_call(init, io, priv); 484 if (ret < 0) 485 goto dai_trigger_end; 486 487 ret = rsnd_dai_call(start, io, priv); 488 if (ret < 0) 489 goto dai_trigger_end; 490 break; 491 case SNDRV_PCM_TRIGGER_STOP: 492 ret = rsnd_dai_call(stop, io, priv); 493 if (ret < 0) 494 goto dai_trigger_end; 495 496 ret = rsnd_dai_call(quit, io, priv); 497 if (ret < 0) 498 goto dai_trigger_end; 499 500 ret = rsnd_platform_call(priv, dai, stop, ssi_id); 501 if (ret < 0) 502 goto dai_trigger_end; 503 504 rsnd_dai_stream_quit(io); 505 break; 506 default: 507 ret = -EINVAL; 508 } 509 510 dai_trigger_end: 511 spin_unlock_irqrestore(&priv->lock, flags); 512 513 return ret; 514 } 515 516 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 517 { 518 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 519 520 /* set master/slave audio interface */ 521 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 522 case SND_SOC_DAIFMT_CBM_CFM: 523 rdai->clk_master = 0; 524 break; 525 case SND_SOC_DAIFMT_CBS_CFS: 526 rdai->clk_master = 1; /* codec is slave, cpu is master */ 527 break; 528 default: 529 return -EINVAL; 530 } 531 532 /* set format */ 533 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 534 case SND_SOC_DAIFMT_I2S: 535 rdai->sys_delay = 0; 536 rdai->data_alignment = 0; 537 rdai->frm_clk_inv = 0; 538 break; 539 case SND_SOC_DAIFMT_LEFT_J: 540 rdai->sys_delay = 1; 541 rdai->data_alignment = 0; 542 rdai->frm_clk_inv = 1; 543 break; 544 case SND_SOC_DAIFMT_RIGHT_J: 545 rdai->sys_delay = 1; 546 rdai->data_alignment = 1; 547 rdai->frm_clk_inv = 1; 548 break; 549 } 550 551 /* set clock inversion */ 552 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 553 case SND_SOC_DAIFMT_NB_IF: 554 rdai->bit_clk_inv = rdai->bit_clk_inv; 555 rdai->frm_clk_inv = !rdai->frm_clk_inv; 556 break; 557 case SND_SOC_DAIFMT_IB_NF: 558 rdai->bit_clk_inv = !rdai->bit_clk_inv; 559 rdai->frm_clk_inv = rdai->frm_clk_inv; 560 break; 561 case SND_SOC_DAIFMT_IB_IF: 562 rdai->bit_clk_inv = !rdai->bit_clk_inv; 563 rdai->frm_clk_inv = !rdai->frm_clk_inv; 564 break; 565 case SND_SOC_DAIFMT_NB_NF: 566 default: 567 break; 568 } 569 570 return 0; 571 } 572 573 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 574 .trigger = rsnd_soc_dai_trigger, 575 .set_fmt = rsnd_soc_dai_set_fmt, 576 }; 577 578 #define rsnd_path_add(priv, io, type) \ 579 ({ \ 580 struct rsnd_mod *mod; \ 581 int ret = 0; \ 582 int id = -1; \ 583 \ 584 if (rsnd_is_enable_path(io, type)) { \ 585 id = rsnd_info_id(priv, io, type); \ 586 if (id >= 0) { \ 587 mod = rsnd_##type##_mod_get(priv, id); \ 588 ret = rsnd_dai_connect(mod, io); \ 589 } \ 590 } \ 591 ret; \ 592 }) 593 594 #define rsnd_path_remove(priv, io, type) \ 595 { \ 596 struct rsnd_mod *mod; \ 597 int id = -1; \ 598 \ 599 if (rsnd_is_enable_path(io, type)) { \ 600 id = rsnd_info_id(priv, io, type); \ 601 if (id >= 0) { \ 602 mod = rsnd_##type##_mod_get(priv, id); \ 603 rsnd_dai_disconnect(mod, io); \ 604 } \ 605 } \ 606 } 607 608 void rsnd_path_parse(struct rsnd_priv *priv, 609 struct rsnd_dai_stream *io) 610 { 611 struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); 612 struct rsnd_mod *mix = rsnd_io_to_mod_mix(io); 613 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 614 struct rsnd_mod *cmd; 615 struct device *dev = rsnd_priv_to_dev(priv); 616 u32 data; 617 618 /* Gen1 is not supported */ 619 if (rsnd_is_gen1(priv)) 620 return; 621 622 if (!mix && !dvc) 623 return; 624 625 if (mix) { 626 struct rsnd_dai *rdai; 627 int i; 628 u32 path[] = { 629 [0] = 0, 630 [1] = 1 << 0, 631 [2] = 0, 632 [3] = 0, 633 [4] = 0, 634 [5] = 1 << 8 635 }; 636 637 /* 638 * it is assuming that integrater is well understanding about 639 * data path. Here doesn't check impossible connection, 640 * like src2 + src5 641 */ 642 data = 0; 643 for_each_rsnd_dai(rdai, priv, i) { 644 io = &rdai->playback; 645 if (mix == rsnd_io_to_mod_mix(io)) 646 data |= path[rsnd_mod_id(src)]; 647 648 io = &rdai->capture; 649 if (mix == rsnd_io_to_mod_mix(io)) 650 data |= path[rsnd_mod_id(src)]; 651 } 652 653 /* 654 * We can't use ctu = rsnd_io_ctu() here. 655 * Since, ID of dvc/mix are 0 or 1 (= same as CMD number) 656 * but ctu IDs are 0 - 7 (= CTU00 - CTU13) 657 */ 658 cmd = mix; 659 } else { 660 u32 path[] = { 661 [0] = 0x30000, 662 [1] = 0x30001, 663 [2] = 0x40000, 664 [3] = 0x10000, 665 [4] = 0x20000, 666 [5] = 0x40100 667 }; 668 669 data = path[rsnd_mod_id(src)]; 670 671 cmd = dvc; 672 } 673 674 dev_dbg(dev, "ctu/mix path = 0x%08x", data); 675 676 rsnd_mod_write(cmd, CMD_ROUTE_SLCT, data); 677 678 rsnd_mod_write(cmd, CMD_CTRL, 0x10); 679 } 680 681 static int rsnd_path_init(struct rsnd_priv *priv, 682 struct rsnd_dai *rdai, 683 struct rsnd_dai_stream *io) 684 { 685 int ret; 686 687 /* 688 * Gen1 is created by SRU/SSI, and this SRU is base module of 689 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) 690 * 691 * Easy image is.. 692 * Gen1 SRU = Gen2 SCU + SSIU + etc 693 * 694 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is 695 * using fixed path. 696 */ 697 698 /* SSI */ 699 ret = rsnd_path_add(priv, io, ssi); 700 if (ret < 0) 701 return ret; 702 703 /* SRC */ 704 ret = rsnd_path_add(priv, io, src); 705 if (ret < 0) 706 return ret; 707 708 /* CTU */ 709 ret = rsnd_path_add(priv, io, ctu); 710 if (ret < 0) 711 return ret; 712 713 /* MIX */ 714 ret = rsnd_path_add(priv, io, mix); 715 if (ret < 0) 716 return ret; 717 718 /* DVC */ 719 ret = rsnd_path_add(priv, io, dvc); 720 if (ret < 0) 721 return ret; 722 723 return ret; 724 } 725 726 static void rsnd_of_parse_dai(struct platform_device *pdev, 727 const struct rsnd_of_data *of_data, 728 struct rsnd_priv *priv) 729 { 730 struct device_node *dai_node, *dai_np; 731 struct device_node *ssi_node, *ssi_np; 732 struct device_node *src_node, *src_np; 733 struct device_node *ctu_node, *ctu_np; 734 struct device_node *mix_node, *mix_np; 735 struct device_node *dvc_node, *dvc_np; 736 struct device_node *playback, *capture; 737 struct rsnd_dai_platform_info *dai_info; 738 struct rcar_snd_info *info = rsnd_priv_to_info(priv); 739 struct device *dev = &pdev->dev; 740 int nr, i; 741 int dai_i, ssi_i, src_i, ctu_i, mix_i, dvc_i; 742 743 if (!of_data) 744 return; 745 746 dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai"); 747 if (!dai_node) 748 return; 749 750 nr = of_get_child_count(dai_node); 751 if (!nr) 752 return; 753 754 dai_info = devm_kzalloc(dev, 755 sizeof(struct rsnd_dai_platform_info) * nr, 756 GFP_KERNEL); 757 if (!dai_info) { 758 dev_err(dev, "dai info allocation error\n"); 759 return; 760 } 761 762 info->dai_info_nr = nr; 763 info->dai_info = dai_info; 764 765 ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); 766 src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src"); 767 ctu_node = of_get_child_by_name(dev->of_node, "rcar_sound,ctu"); 768 mix_node = of_get_child_by_name(dev->of_node, "rcar_sound,mix"); 769 dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc"); 770 771 #define mod_parse(name) \ 772 if (name##_node) { \ 773 struct rsnd_##name##_platform_info *name##_info; \ 774 \ 775 name##_i = 0; \ 776 for_each_child_of_node(name##_node, name##_np) { \ 777 name##_info = info->name##_info + name##_i; \ 778 \ 779 if (name##_np == playback) \ 780 dai_info->playback.name = name##_info; \ 781 if (name##_np == capture) \ 782 dai_info->capture.name = name##_info; \ 783 \ 784 name##_i++; \ 785 } \ 786 } 787 788 /* 789 * parse all dai 790 */ 791 dai_i = 0; 792 for_each_child_of_node(dai_node, dai_np) { 793 dai_info = info->dai_info + dai_i; 794 795 for (i = 0;; i++) { 796 797 playback = of_parse_phandle(dai_np, "playback", i); 798 capture = of_parse_phandle(dai_np, "capture", i); 799 800 if (!playback && !capture) 801 break; 802 803 mod_parse(ssi); 804 mod_parse(src); 805 mod_parse(ctu); 806 mod_parse(mix); 807 mod_parse(dvc); 808 809 of_node_put(playback); 810 of_node_put(capture); 811 } 812 813 dai_i++; 814 } 815 } 816 817 static int rsnd_dai_probe(struct platform_device *pdev, 818 const struct rsnd_of_data *of_data, 819 struct rsnd_priv *priv) 820 { 821 struct snd_soc_dai_driver *drv; 822 struct rcar_snd_info *info = rsnd_priv_to_info(priv); 823 struct rsnd_dai *rdai; 824 struct rsnd_ssi_platform_info *pmod, *cmod; 825 struct device *dev = rsnd_priv_to_dev(priv); 826 int dai_nr; 827 int i; 828 829 rsnd_of_parse_dai(pdev, of_data, priv); 830 831 dai_nr = info->dai_info_nr; 832 if (!dai_nr) { 833 dev_err(dev, "no dai\n"); 834 return -EIO; 835 } 836 837 drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL); 838 rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL); 839 if (!drv || !rdai) { 840 dev_err(dev, "dai allocate failed\n"); 841 return -ENOMEM; 842 } 843 844 priv->rdai_nr = dai_nr; 845 priv->daidrv = drv; 846 priv->rdai = rdai; 847 848 for (i = 0; i < dai_nr; i++) { 849 850 pmod = info->dai_info[i].playback.ssi; 851 cmod = info->dai_info[i].capture.ssi; 852 853 /* 854 * init rsnd_dai 855 */ 856 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); 857 rdai[i].priv = priv; 858 859 /* 860 * init snd_soc_dai_driver 861 */ 862 drv[i].name = rdai[i].name; 863 drv[i].ops = &rsnd_soc_dai_ops; 864 if (pmod) { 865 snprintf(rdai[i].playback.name, RSND_DAI_NAME_SIZE, 866 "DAI%d Playback", i); 867 868 drv[i].playback.rates = RSND_RATES; 869 drv[i].playback.formats = RSND_FMTS; 870 drv[i].playback.channels_min = 2; 871 drv[i].playback.channels_max = 2; 872 drv[i].playback.stream_name = rdai[i].playback.name; 873 874 rdai[i].playback.info = &info->dai_info[i].playback; 875 rdai[i].playback.rdai = rdai + i; 876 rsnd_path_init(priv, &rdai[i], &rdai[i].playback); 877 } 878 if (cmod) { 879 snprintf(rdai[i].capture.name, RSND_DAI_NAME_SIZE, 880 "DAI%d Capture", i); 881 882 drv[i].capture.rates = RSND_RATES; 883 drv[i].capture.formats = RSND_FMTS; 884 drv[i].capture.channels_min = 2; 885 drv[i].capture.channels_max = 2; 886 drv[i].capture.stream_name = rdai[i].capture.name; 887 888 rdai[i].capture.info = &info->dai_info[i].capture; 889 rdai[i].capture.rdai = rdai + i; 890 rsnd_path_init(priv, &rdai[i], &rdai[i].capture); 891 } 892 893 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name, 894 pmod ? "play" : " -- ", 895 cmod ? "capture" : " -- "); 896 } 897 898 return 0; 899 } 900 901 /* 902 * pcm ops 903 */ 904 static struct snd_pcm_hardware rsnd_pcm_hardware = { 905 .info = SNDRV_PCM_INFO_INTERLEAVED | 906 SNDRV_PCM_INFO_MMAP | 907 SNDRV_PCM_INFO_MMAP_VALID, 908 .buffer_bytes_max = 64 * 1024, 909 .period_bytes_min = 32, 910 .period_bytes_max = 8192, 911 .periods_min = 1, 912 .periods_max = 32, 913 .fifo_size = 256, 914 }; 915 916 static int rsnd_pcm_open(struct snd_pcm_substream *substream) 917 { 918 struct snd_pcm_runtime *runtime = substream->runtime; 919 int ret = 0; 920 921 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 922 923 ret = snd_pcm_hw_constraint_integer(runtime, 924 SNDRV_PCM_HW_PARAM_PERIODS); 925 926 return ret; 927 } 928 929 static int rsnd_hw_params(struct snd_pcm_substream *substream, 930 struct snd_pcm_hw_params *hw_params) 931 { 932 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 933 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 934 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 935 int ret; 936 937 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 938 if (ret) 939 return ret; 940 941 return snd_pcm_lib_malloc_pages(substream, 942 params_buffer_bytes(hw_params)); 943 } 944 945 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 946 { 947 struct snd_pcm_runtime *runtime = substream->runtime; 948 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 949 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 950 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 951 952 return bytes_to_frames(runtime, io->byte_pos); 953 } 954 955 static struct snd_pcm_ops rsnd_pcm_ops = { 956 .open = rsnd_pcm_open, 957 .ioctl = snd_pcm_lib_ioctl, 958 .hw_params = rsnd_hw_params, 959 .hw_free = snd_pcm_lib_free_pages, 960 .pointer = rsnd_pointer, 961 }; 962 963 /* 964 * snd_kcontrol 965 */ 966 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) 967 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 968 struct snd_ctl_elem_info *uinfo) 969 { 970 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 971 972 if (cfg->texts) { 973 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 974 uinfo->count = cfg->size; 975 uinfo->value.enumerated.items = cfg->max; 976 if (uinfo->value.enumerated.item >= cfg->max) 977 uinfo->value.enumerated.item = cfg->max - 1; 978 strlcpy(uinfo->value.enumerated.name, 979 cfg->texts[uinfo->value.enumerated.item], 980 sizeof(uinfo->value.enumerated.name)); 981 } else { 982 uinfo->count = cfg->size; 983 uinfo->value.integer.min = 0; 984 uinfo->value.integer.max = cfg->max; 985 uinfo->type = (cfg->max == 1) ? 986 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 987 SNDRV_CTL_ELEM_TYPE_INTEGER; 988 } 989 990 return 0; 991 } 992 993 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 994 struct snd_ctl_elem_value *uc) 995 { 996 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 997 int i; 998 999 for (i = 0; i < cfg->size; i++) 1000 if (cfg->texts) 1001 uc->value.enumerated.item[i] = cfg->val[i]; 1002 else 1003 uc->value.integer.value[i] = cfg->val[i]; 1004 1005 return 0; 1006 } 1007 1008 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 1009 struct snd_ctl_elem_value *uc) 1010 { 1011 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); 1012 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 1013 int i, change = 0; 1014 1015 for (i = 0; i < cfg->size; i++) { 1016 if (cfg->texts) { 1017 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 1018 cfg->val[i] = uc->value.enumerated.item[i]; 1019 } else { 1020 change |= (uc->value.integer.value[i] != cfg->val[i]); 1021 cfg->val[i] = uc->value.integer.value[i]; 1022 } 1023 } 1024 1025 if (change) 1026 cfg->update(cfg->io, mod); 1027 1028 return change; 1029 } 1030 1031 static int __rsnd_kctrl_new(struct rsnd_mod *mod, 1032 struct rsnd_dai_stream *io, 1033 struct snd_soc_pcm_runtime *rtd, 1034 const unsigned char *name, 1035 struct rsnd_kctrl_cfg *cfg, 1036 void (*update)(struct rsnd_dai_stream *io, 1037 struct rsnd_mod *mod)) 1038 { 1039 struct snd_soc_card *soc_card = rtd->card; 1040 struct snd_card *card = rtd->card->snd_card; 1041 struct snd_kcontrol *kctrl; 1042 struct snd_kcontrol_new knew = { 1043 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1044 .name = name, 1045 .info = rsnd_kctrl_info, 1046 .index = rtd - soc_card->rtd, 1047 .get = rsnd_kctrl_get, 1048 .put = rsnd_kctrl_put, 1049 .private_value = (unsigned long)cfg, 1050 }; 1051 int ret; 1052 1053 kctrl = snd_ctl_new1(&knew, mod); 1054 if (!kctrl) 1055 return -ENOMEM; 1056 1057 ret = snd_ctl_add(card, kctrl); 1058 if (ret < 0) { 1059 snd_ctl_free_one(kctrl); 1060 return ret; 1061 } 1062 1063 cfg->update = update; 1064 cfg->card = card; 1065 cfg->kctrl = kctrl; 1066 cfg->io = io; 1067 1068 return 0; 1069 } 1070 1071 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg) 1072 { 1073 snd_ctl_remove(cfg->card, cfg->kctrl); 1074 } 1075 1076 int rsnd_kctrl_new_m(struct rsnd_mod *mod, 1077 struct rsnd_dai_stream *io, 1078 struct snd_soc_pcm_runtime *rtd, 1079 const unsigned char *name, 1080 void (*update)(struct rsnd_dai_stream *io, 1081 struct rsnd_mod *mod), 1082 struct rsnd_kctrl_cfg_m *_cfg, 1083 u32 max) 1084 { 1085 _cfg->cfg.max = max; 1086 _cfg->cfg.size = RSND_DVC_CHANNELS; 1087 _cfg->cfg.val = _cfg->val; 1088 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1089 } 1090 1091 int rsnd_kctrl_new_s(struct rsnd_mod *mod, 1092 struct rsnd_dai_stream *io, 1093 struct snd_soc_pcm_runtime *rtd, 1094 const unsigned char *name, 1095 void (*update)(struct rsnd_dai_stream *io, 1096 struct rsnd_mod *mod), 1097 struct rsnd_kctrl_cfg_s *_cfg, 1098 u32 max) 1099 { 1100 _cfg->cfg.max = max; 1101 _cfg->cfg.size = 1; 1102 _cfg->cfg.val = &_cfg->val; 1103 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1104 } 1105 1106 int rsnd_kctrl_new_e(struct rsnd_mod *mod, 1107 struct rsnd_dai_stream *io, 1108 struct snd_soc_pcm_runtime *rtd, 1109 const unsigned char *name, 1110 struct rsnd_kctrl_cfg_s *_cfg, 1111 void (*update)(struct rsnd_dai_stream *io, 1112 struct rsnd_mod *mod), 1113 const char * const *texts, 1114 u32 max) 1115 { 1116 _cfg->cfg.max = max; 1117 _cfg->cfg.size = 1; 1118 _cfg->cfg.val = &_cfg->val; 1119 _cfg->cfg.texts = texts; 1120 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1121 } 1122 1123 /* 1124 * snd_soc_platform 1125 */ 1126 1127 #define PREALLOC_BUFFER (32 * 1024) 1128 #define PREALLOC_BUFFER_MAX (32 * 1024) 1129 1130 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1131 { 1132 struct snd_soc_dai *dai = rtd->cpu_dai; 1133 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1134 int ret; 1135 1136 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1137 if (ret) 1138 return ret; 1139 1140 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1141 if (ret) 1142 return ret; 1143 1144 return snd_pcm_lib_preallocate_pages_for_all( 1145 rtd->pcm, 1146 SNDRV_DMA_TYPE_DEV, 1147 rtd->card->snd_card->dev, 1148 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1149 } 1150 1151 static struct snd_soc_platform_driver rsnd_soc_platform = { 1152 .ops = &rsnd_pcm_ops, 1153 .pcm_new = rsnd_pcm_new, 1154 }; 1155 1156 static const struct snd_soc_component_driver rsnd_soc_component = { 1157 .name = "rsnd", 1158 }; 1159 1160 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1161 struct rsnd_dai_stream *io) 1162 { 1163 int ret; 1164 1165 ret = rsnd_dai_call(probe, io, priv); 1166 if (ret == -EAGAIN) { 1167 /* 1168 * Fallback to PIO mode 1169 */ 1170 1171 /* 1172 * call "remove" for SSI/SRC/DVC 1173 * SSI will be switch to PIO mode if it was DMA mode 1174 * see 1175 * rsnd_dma_init() 1176 * rsnd_ssi_fallback() 1177 */ 1178 rsnd_dai_call(remove, io, priv); 1179 1180 /* 1181 * remove SRC/DVC from DAI, 1182 */ 1183 rsnd_path_remove(priv, io, src); 1184 rsnd_path_remove(priv, io, dvc); 1185 1186 /* 1187 * fallback 1188 */ 1189 rsnd_dai_call(fallback, io, priv); 1190 1191 /* 1192 * retry to "probe". 1193 * DAI has SSI which is PIO mode only now. 1194 */ 1195 ret = rsnd_dai_call(probe, io, priv); 1196 } 1197 1198 return ret; 1199 } 1200 1201 /* 1202 * rsnd probe 1203 */ 1204 static int rsnd_probe(struct platform_device *pdev) 1205 { 1206 struct rcar_snd_info *info; 1207 struct rsnd_priv *priv; 1208 struct device *dev = &pdev->dev; 1209 struct rsnd_dai *rdai; 1210 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev); 1211 const struct rsnd_of_data *of_data; 1212 int (*probe_func[])(struct platform_device *pdev, 1213 const struct rsnd_of_data *of_data, 1214 struct rsnd_priv *priv) = { 1215 rsnd_gen_probe, 1216 rsnd_dma_probe, 1217 rsnd_ssi_probe, 1218 rsnd_src_probe, 1219 rsnd_ctu_probe, 1220 rsnd_mix_probe, 1221 rsnd_dvc_probe, 1222 rsnd_adg_probe, 1223 rsnd_dai_probe, 1224 }; 1225 int ret, i; 1226 1227 info = NULL; 1228 of_data = NULL; 1229 if (of_id) { 1230 info = devm_kzalloc(&pdev->dev, 1231 sizeof(struct rcar_snd_info), GFP_KERNEL); 1232 of_data = of_id->data; 1233 } else { 1234 info = pdev->dev.platform_data; 1235 } 1236 1237 if (!info) { 1238 dev_err(dev, "driver needs R-Car sound information\n"); 1239 return -ENODEV; 1240 } 1241 1242 /* 1243 * init priv data 1244 */ 1245 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1246 if (!priv) { 1247 dev_err(dev, "priv allocate failed\n"); 1248 return -ENODEV; 1249 } 1250 1251 priv->pdev = pdev; 1252 priv->info = info; 1253 spin_lock_init(&priv->lock); 1254 1255 /* 1256 * init each module 1257 */ 1258 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1259 ret = probe_func[i](pdev, of_data, priv); 1260 if (ret) 1261 return ret; 1262 } 1263 1264 for_each_rsnd_dai(rdai, priv, i) { 1265 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1266 if (ret) 1267 goto exit_snd_probe; 1268 1269 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1270 if (ret) 1271 goto exit_snd_probe; 1272 } 1273 1274 dev_set_drvdata(dev, priv); 1275 1276 /* 1277 * asoc register 1278 */ 1279 ret = snd_soc_register_platform(dev, &rsnd_soc_platform); 1280 if (ret < 0) { 1281 dev_err(dev, "cannot snd soc register\n"); 1282 return ret; 1283 } 1284 1285 ret = snd_soc_register_component(dev, &rsnd_soc_component, 1286 priv->daidrv, rsnd_rdai_nr(priv)); 1287 if (ret < 0) { 1288 dev_err(dev, "cannot snd dai register\n"); 1289 goto exit_snd_soc; 1290 } 1291 1292 pm_runtime_enable(dev); 1293 1294 dev_info(dev, "probed\n"); 1295 return ret; 1296 1297 exit_snd_soc: 1298 snd_soc_unregister_platform(dev); 1299 exit_snd_probe: 1300 for_each_rsnd_dai(rdai, priv, i) { 1301 rsnd_dai_call(remove, &rdai->playback, priv); 1302 rsnd_dai_call(remove, &rdai->capture, priv); 1303 } 1304 1305 return ret; 1306 } 1307 1308 static int rsnd_remove(struct platform_device *pdev) 1309 { 1310 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1311 struct rsnd_dai *rdai; 1312 void (*remove_func[])(struct platform_device *pdev, 1313 struct rsnd_priv *priv) = { 1314 rsnd_ssi_remove, 1315 rsnd_src_remove, 1316 rsnd_ctu_remove, 1317 rsnd_mix_remove, 1318 rsnd_dvc_remove, 1319 }; 1320 int ret = 0, i; 1321 1322 pm_runtime_disable(&pdev->dev); 1323 1324 for_each_rsnd_dai(rdai, priv, i) { 1325 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1326 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1327 } 1328 1329 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1330 remove_func[i](pdev, priv); 1331 1332 snd_soc_unregister_component(&pdev->dev); 1333 snd_soc_unregister_platform(&pdev->dev); 1334 1335 return ret; 1336 } 1337 1338 static struct platform_driver rsnd_driver = { 1339 .driver = { 1340 .name = "rcar_sound", 1341 .of_match_table = rsnd_of_match, 1342 }, 1343 .probe = rsnd_probe, 1344 .remove = rsnd_remove, 1345 }; 1346 module_platform_driver(rsnd_driver); 1347 1348 MODULE_LICENSE("GPL"); 1349 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1350 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1351 MODULE_ALIAS("platform:rcar-pcm-audio"); 1352