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 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_GEN2 }, /* gen2 compatible */ 106 {}, 107 }; 108 MODULE_DEVICE_TABLE(of, rsnd_of_match); 109 110 /* 111 * rsnd_mod functions 112 */ 113 #ifdef DEBUG 114 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 115 { 116 if (mod->type != type) { 117 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 118 struct device *dev = rsnd_priv_to_dev(priv); 119 120 dev_warn(dev, "%s[%d] is not your expected module\n", 121 rsnd_mod_name(mod), rsnd_mod_id(mod)); 122 } 123 } 124 #endif 125 126 char *rsnd_mod_name(struct rsnd_mod *mod) 127 { 128 if (!mod || !mod->ops) 129 return "unknown"; 130 131 return mod->ops->name; 132 } 133 134 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 135 struct rsnd_mod *mod) 136 { 137 if (!mod || !mod->ops || !mod->ops->dma_req) 138 return NULL; 139 140 return mod->ops->dma_req(io, mod); 141 } 142 143 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io, 144 struct rsnd_mod *mod, 145 enum rsnd_mod_type type) 146 { 147 return &mod->status; 148 } 149 150 int rsnd_mod_init(struct rsnd_priv *priv, 151 struct rsnd_mod *mod, 152 struct rsnd_mod_ops *ops, 153 struct clk *clk, 154 u32* (*get_status)(struct rsnd_dai_stream *io, 155 struct rsnd_mod *mod, 156 enum rsnd_mod_type type), 157 enum rsnd_mod_type type, 158 int id) 159 { 160 int ret = clk_prepare(clk); 161 162 if (ret) 163 return ret; 164 165 mod->id = id; 166 mod->ops = ops; 167 mod->type = type; 168 mod->clk = clk; 169 mod->priv = priv; 170 mod->get_status = get_status; 171 172 return ret; 173 } 174 175 void rsnd_mod_quit(struct rsnd_mod *mod) 176 { 177 if (mod->clk) 178 clk_unprepare(mod->clk); 179 mod->clk = NULL; 180 } 181 182 void rsnd_mod_interrupt(struct rsnd_mod *mod, 183 void (*callback)(struct rsnd_mod *mod, 184 struct rsnd_dai_stream *io)) 185 { 186 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 187 struct rsnd_dai_stream *io; 188 struct rsnd_dai *rdai; 189 int i; 190 191 for_each_rsnd_dai(rdai, priv, i) { 192 io = &rdai->playback; 193 if (mod == io->mod[mod->type]) 194 callback(mod, io); 195 196 io = &rdai->capture; 197 if (mod == io->mod[mod->type]) 198 callback(mod, io); 199 } 200 } 201 202 int rsnd_io_is_working(struct rsnd_dai_stream *io) 203 { 204 /* see rsnd_dai_stream_init/quit() */ 205 return !!io->substream; 206 } 207 208 void rsnd_set_slot(struct rsnd_dai *rdai, 209 int slots, int num) 210 { 211 rdai->slots = slots; 212 rdai->slots_num = num; 213 } 214 215 int rsnd_get_slot(struct rsnd_dai_stream *io) 216 { 217 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 218 219 return rdai->slots; 220 } 221 222 int rsnd_get_slot_num(struct rsnd_dai_stream *io) 223 { 224 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 225 226 return rdai->slots_num; 227 } 228 229 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io) 230 { 231 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 232 233 return runtime->channels; 234 } 235 236 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io) 237 { 238 int chan = rsnd_runtime_channel_original(io); 239 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 240 241 if (ctu_mod) { 242 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod); 243 244 if (converted_chan) 245 return converted_chan; 246 } 247 248 return chan; 249 } 250 251 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io) 252 { 253 int chan = rsnd_io_is_play(io) ? 254 rsnd_runtime_channel_after_ctu(io) : 255 rsnd_runtime_channel_original(io); 256 257 /* Use Multi SSI */ 258 if (rsnd_runtime_is_ssi_multi(io)) 259 chan /= rsnd_get_slot_num(io); 260 261 /* TDM Extend Mode needs 8ch */ 262 if (chan == 6) 263 chan = 8; 264 265 return chan; 266 } 267 268 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io) 269 { 270 int slots = rsnd_get_slot_num(io); 271 int chan = rsnd_io_is_play(io) ? 272 rsnd_runtime_channel_after_ctu(io) : 273 rsnd_runtime_channel_original(io); 274 275 return (chan >= 6) && (slots > 1); 276 } 277 278 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io) 279 { 280 return rsnd_runtime_channel_for_ssi(io) >= 6; 281 } 282 283 /* 284 * ADINR function 285 */ 286 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 287 { 288 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 289 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 290 struct device *dev = rsnd_priv_to_dev(priv); 291 292 switch (runtime->sample_bits) { 293 case 16: 294 return 8 << 16; 295 case 32: 296 return 0 << 16; 297 } 298 299 dev_warn(dev, "not supported sample bits\n"); 300 301 return 0; 302 } 303 304 /* 305 * DALIGN function 306 */ 307 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 308 { 309 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); 310 struct rsnd_mod *target; 311 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 312 u32 val = 0x76543210; 313 u32 mask = ~0; 314 315 if (rsnd_io_is_play(io)) { 316 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 317 318 target = src ? src : ssiu; 319 } else { 320 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 321 322 target = cmd ? cmd : ssiu; 323 } 324 325 mask <<= runtime->channels * 4; 326 val = val & mask; 327 328 switch (runtime->sample_bits) { 329 case 16: 330 val |= 0x67452301 & ~mask; 331 break; 332 case 32: 333 val |= 0x76543210 & ~mask; 334 break; 335 } 336 337 /* 338 * exchange channeles on SRC if possible, 339 * otherwise, R/L volume settings on DVC 340 * changes inverted channels 341 */ 342 if (mod == target) 343 return val; 344 else 345 return 0x76543210; 346 } 347 348 /* 349 * rsnd_dai functions 350 */ 351 struct rsnd_mod *rsnd_mod_next(int *iterator, 352 struct rsnd_dai_stream *io, 353 enum rsnd_mod_type *array, 354 int array_size) 355 { 356 struct rsnd_mod *mod; 357 enum rsnd_mod_type type; 358 int max = array ? array_size : RSND_MOD_MAX; 359 360 for (; *iterator < max; (*iterator)++) { 361 type = (array) ? array[*iterator] : *iterator; 362 mod = io->mod[type]; 363 if (!mod) 364 continue; 365 366 (*iterator)++; 367 368 return mod; 369 } 370 371 return NULL; 372 } 373 374 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 375 { 376 /* CAPTURE */ 377 RSND_MOD_AUDMAPP, 378 RSND_MOD_AUDMA, 379 RSND_MOD_DVC, 380 RSND_MOD_MIX, 381 RSND_MOD_CTU, 382 RSND_MOD_CMD, 383 RSND_MOD_SRC, 384 RSND_MOD_SSIU, 385 RSND_MOD_SSIM3, 386 RSND_MOD_SSIM2, 387 RSND_MOD_SSIM1, 388 RSND_MOD_SSIP, 389 RSND_MOD_SSI, 390 }, { 391 /* PLAYBACK */ 392 RSND_MOD_AUDMAPP, 393 RSND_MOD_AUDMA, 394 RSND_MOD_SSIM3, 395 RSND_MOD_SSIM2, 396 RSND_MOD_SSIM1, 397 RSND_MOD_SSIP, 398 RSND_MOD_SSI, 399 RSND_MOD_SSIU, 400 RSND_MOD_DVC, 401 RSND_MOD_MIX, 402 RSND_MOD_CTU, 403 RSND_MOD_CMD, 404 RSND_MOD_SRC, 405 }, 406 }; 407 408 static int rsnd_status_update(u32 *status, 409 int shift, int add, int timing) 410 { 411 u32 mask = 0xF << shift; 412 u8 val = (*status >> shift) & 0xF; 413 u8 next_val = (val + add) & 0xF; 414 int func_call = (val == timing); 415 416 if (next_val == 0xF) /* underflow case */ 417 func_call = 0; 418 else 419 *status = (*status & ~mask) + (next_val << shift); 420 421 return func_call; 422 } 423 424 #define rsnd_dai_call(fn, io, param...) \ 425 ({ \ 426 struct rsnd_priv *priv = rsnd_io_to_priv(io); \ 427 struct device *dev = rsnd_priv_to_dev(priv); \ 428 struct rsnd_mod *mod; \ 429 int is_play = rsnd_io_is_play(io); \ 430 int ret = 0, i; \ 431 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 432 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 433 int tmp = 0; \ 434 u32 *status = mod->get_status(io, mod, types[i]); \ 435 int func_call = rsnd_status_update(status, \ 436 __rsnd_mod_shift_##fn, \ 437 __rsnd_mod_add_##fn, \ 438 __rsnd_mod_call_##fn); \ 439 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \ 440 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \ 441 (func_call && (mod)->ops->fn) ? #fn : ""); \ 442 if (func_call && (mod)->ops->fn) \ 443 tmp = (mod)->ops->fn(mod, io, param); \ 444 if (tmp) \ 445 dev_err(dev, "%s[%d] : %s error %d\n", \ 446 rsnd_mod_name(mod), rsnd_mod_id(mod), \ 447 #fn, tmp); \ 448 ret |= tmp; \ 449 } \ 450 ret; \ 451 }) 452 453 int rsnd_dai_connect(struct rsnd_mod *mod, 454 struct rsnd_dai_stream *io, 455 enum rsnd_mod_type type) 456 { 457 struct rsnd_priv *priv; 458 struct device *dev; 459 460 if (!mod) 461 return -EIO; 462 463 if (io->mod[type] == mod) 464 return 0; 465 466 if (io->mod[type]) 467 return -EINVAL; 468 469 priv = rsnd_mod_to_priv(mod); 470 dev = rsnd_priv_to_dev(priv); 471 472 io->mod[type] = mod; 473 474 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 475 rsnd_mod_name(mod), rsnd_mod_id(mod), 476 rsnd_io_is_play(io) ? "Playback" : "Capture"); 477 478 return 0; 479 } 480 481 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 482 struct rsnd_dai_stream *io, 483 enum rsnd_mod_type type) 484 { 485 io->mod[type] = NULL; 486 } 487 488 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 489 { 490 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 491 return NULL; 492 493 return priv->rdai + id; 494 } 495 496 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 497 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 498 { 499 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 500 501 return rsnd_rdai_get(priv, dai->id); 502 } 503 504 /* 505 * rsnd_soc_dai functions 506 */ 507 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) 508 { 509 struct snd_pcm_substream *substream = io->substream; 510 struct snd_pcm_runtime *runtime = substream->runtime; 511 int pos = io->byte_pos + additional; 512 513 pos %= (runtime->periods * io->byte_per_period); 514 515 return pos; 516 } 517 518 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) 519 { 520 io->byte_pos += byte; 521 522 if (io->byte_pos >= io->next_period_byte) { 523 struct snd_pcm_substream *substream = io->substream; 524 struct snd_pcm_runtime *runtime = substream->runtime; 525 526 io->period_pos++; 527 io->next_period_byte += io->byte_per_period; 528 529 if (io->period_pos >= runtime->periods) { 530 io->byte_pos = 0; 531 io->period_pos = 0; 532 io->next_period_byte = io->byte_per_period; 533 } 534 535 return true; 536 } 537 538 return false; 539 } 540 541 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 542 { 543 struct snd_pcm_substream *substream = io->substream; 544 545 /* 546 * this function should be called... 547 * 548 * - if rsnd_dai_pointer_update() returns true 549 * - without spin lock 550 */ 551 552 snd_pcm_period_elapsed(substream); 553 } 554 555 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 556 struct snd_pcm_substream *substream) 557 { 558 struct snd_pcm_runtime *runtime = substream->runtime; 559 560 io->substream = substream; 561 io->byte_pos = 0; 562 io->period_pos = 0; 563 io->byte_per_period = runtime->period_size * 564 runtime->channels * 565 samples_to_bytes(runtime, 1); 566 io->next_period_byte = io->byte_per_period; 567 } 568 569 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 570 { 571 io->substream = NULL; 572 } 573 574 static 575 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 576 { 577 struct snd_soc_pcm_runtime *rtd = substream->private_data; 578 579 return rtd->cpu_dai; 580 } 581 582 static 583 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 584 struct snd_pcm_substream *substream) 585 { 586 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 587 return &rdai->playback; 588 else 589 return &rdai->capture; 590 } 591 592 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 593 struct snd_soc_dai *dai) 594 { 595 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 596 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 597 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 598 int ret; 599 unsigned long flags; 600 601 spin_lock_irqsave(&priv->lock, flags); 602 603 switch (cmd) { 604 case SNDRV_PCM_TRIGGER_START: 605 case SNDRV_PCM_TRIGGER_RESUME: 606 rsnd_dai_stream_init(io, substream); 607 608 ret = rsnd_dai_call(init, io, priv); 609 if (ret < 0) 610 goto dai_trigger_end; 611 612 ret = rsnd_dai_call(start, io, priv); 613 if (ret < 0) 614 goto dai_trigger_end; 615 616 ret = rsnd_dai_call(irq, io, priv, 1); 617 if (ret < 0) 618 goto dai_trigger_end; 619 620 break; 621 case SNDRV_PCM_TRIGGER_STOP: 622 case SNDRV_PCM_TRIGGER_SUSPEND: 623 ret = rsnd_dai_call(irq, io, priv, 0); 624 625 ret |= rsnd_dai_call(stop, io, priv); 626 627 ret |= rsnd_dai_call(quit, io, priv); 628 629 rsnd_dai_stream_quit(io); 630 break; 631 default: 632 ret = -EINVAL; 633 } 634 635 dai_trigger_end: 636 spin_unlock_irqrestore(&priv->lock, flags); 637 638 return ret; 639 } 640 641 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 642 { 643 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 644 645 /* set master/slave audio interface */ 646 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 647 case SND_SOC_DAIFMT_CBM_CFM: 648 rdai->clk_master = 0; 649 break; 650 case SND_SOC_DAIFMT_CBS_CFS: 651 rdai->clk_master = 1; /* codec is slave, cpu is master */ 652 break; 653 default: 654 return -EINVAL; 655 } 656 657 /* set format */ 658 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 659 case SND_SOC_DAIFMT_I2S: 660 rdai->sys_delay = 0; 661 rdai->data_alignment = 0; 662 rdai->frm_clk_inv = 0; 663 break; 664 case SND_SOC_DAIFMT_LEFT_J: 665 rdai->sys_delay = 1; 666 rdai->data_alignment = 0; 667 rdai->frm_clk_inv = 1; 668 break; 669 case SND_SOC_DAIFMT_RIGHT_J: 670 rdai->sys_delay = 1; 671 rdai->data_alignment = 1; 672 rdai->frm_clk_inv = 1; 673 break; 674 } 675 676 /* set clock inversion */ 677 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 678 case SND_SOC_DAIFMT_NB_IF: 679 rdai->bit_clk_inv = rdai->bit_clk_inv; 680 rdai->frm_clk_inv = !rdai->frm_clk_inv; 681 break; 682 case SND_SOC_DAIFMT_IB_NF: 683 rdai->bit_clk_inv = !rdai->bit_clk_inv; 684 rdai->frm_clk_inv = rdai->frm_clk_inv; 685 break; 686 case SND_SOC_DAIFMT_IB_IF: 687 rdai->bit_clk_inv = !rdai->bit_clk_inv; 688 rdai->frm_clk_inv = !rdai->frm_clk_inv; 689 break; 690 case SND_SOC_DAIFMT_NB_NF: 691 default: 692 break; 693 } 694 695 return 0; 696 } 697 698 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 699 u32 tx_mask, u32 rx_mask, 700 int slots, int slot_width) 701 { 702 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 703 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 704 struct device *dev = rsnd_priv_to_dev(priv); 705 706 switch (slots) { 707 case 6: 708 /* TDM Extend Mode */ 709 rsnd_set_slot(rdai, slots, 1); 710 break; 711 default: 712 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 713 return -EINVAL; 714 } 715 716 return 0; 717 } 718 719 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 720 struct snd_soc_dai *dai) 721 { 722 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 723 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 724 725 /* 726 * call rsnd_dai_call without spinlock 727 */ 728 return rsnd_dai_call(nolock_start, io, priv); 729 } 730 731 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 732 struct snd_soc_dai *dai) 733 { 734 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 735 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 736 737 /* 738 * call rsnd_dai_call without spinlock 739 */ 740 rsnd_dai_call(nolock_stop, io, priv); 741 } 742 743 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 744 .startup = rsnd_soc_dai_startup, 745 .shutdown = rsnd_soc_dai_shutdown, 746 .trigger = rsnd_soc_dai_trigger, 747 .set_fmt = rsnd_soc_dai_set_fmt, 748 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 749 }; 750 751 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 752 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 753 struct device_node *node, 754 struct device_node *playback, 755 struct device_node *capture) 756 { 757 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 758 struct device_node *np; 759 struct rsnd_mod *mod; 760 int i; 761 762 if (!node) 763 return; 764 765 i = 0; 766 for_each_child_of_node(node, np) { 767 mod = mod_get(priv, i); 768 if (np == playback) 769 rsnd_dai_connect(mod, &rdai->playback, mod->type); 770 if (np == capture) 771 rsnd_dai_connect(mod, &rdai->capture, mod->type); 772 i++; 773 } 774 775 of_node_put(node); 776 } 777 778 static int rsnd_dai_probe(struct rsnd_priv *priv) 779 { 780 struct device_node *dai_node; 781 struct device_node *dai_np; 782 struct device_node *playback, *capture; 783 struct rsnd_dai_stream *io_playback; 784 struct rsnd_dai_stream *io_capture; 785 struct snd_soc_dai_driver *rdrv, *drv; 786 struct rsnd_dai *rdai; 787 struct device *dev = rsnd_priv_to_dev(priv); 788 int nr, dai_i, io_i; 789 int ret; 790 791 dai_node = rsnd_dai_of_node(priv); 792 nr = of_get_child_count(dai_node); 793 if (!nr) { 794 ret = -EINVAL; 795 goto rsnd_dai_probe_done; 796 } 797 798 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL); 799 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL); 800 if (!rdrv || !rdai) { 801 ret = -ENOMEM; 802 goto rsnd_dai_probe_done; 803 } 804 805 priv->rdai_nr = nr; 806 priv->daidrv = rdrv; 807 priv->rdai = rdai; 808 809 /* 810 * parse all dai 811 */ 812 dai_i = 0; 813 for_each_child_of_node(dai_node, dai_np) { 814 rdai = rsnd_rdai_get(priv, dai_i); 815 drv = rdrv + dai_i; 816 io_playback = &rdai->playback; 817 io_capture = &rdai->capture; 818 819 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 820 821 rdai->priv = priv; 822 drv->name = rdai->name; 823 drv->ops = &rsnd_soc_dai_ops; 824 825 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE, 826 "DAI%d Playback", dai_i); 827 drv->playback.rates = RSND_RATES; 828 drv->playback.formats = RSND_FMTS; 829 drv->playback.channels_min = 2; 830 drv->playback.channels_max = 6; 831 drv->playback.stream_name = rdai->playback.name; 832 833 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, 834 "DAI%d Capture", dai_i); 835 drv->capture.rates = RSND_RATES; 836 drv->capture.formats = RSND_FMTS; 837 drv->capture.channels_min = 2; 838 drv->capture.channels_max = 6; 839 drv->capture.stream_name = rdai->capture.name; 840 841 rdai->playback.rdai = rdai; 842 rdai->capture.rdai = rdai; 843 rsnd_set_slot(rdai, 2, 1); /* default */ 844 845 for (io_i = 0;; io_i++) { 846 playback = of_parse_phandle(dai_np, "playback", io_i); 847 capture = of_parse_phandle(dai_np, "capture", io_i); 848 849 if (!playback && !capture) 850 break; 851 852 rsnd_parse_connect_ssi(rdai, playback, capture); 853 rsnd_parse_connect_src(rdai, playback, capture); 854 rsnd_parse_connect_ctu(rdai, playback, capture); 855 rsnd_parse_connect_mix(rdai, playback, capture); 856 rsnd_parse_connect_dvc(rdai, playback, capture); 857 858 of_node_put(playback); 859 of_node_put(capture); 860 } 861 862 dai_i++; 863 864 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 865 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 866 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 867 } 868 869 ret = 0; 870 871 rsnd_dai_probe_done: 872 of_node_put(dai_node); 873 874 return ret; 875 } 876 877 /* 878 * pcm ops 879 */ 880 static struct snd_pcm_hardware rsnd_pcm_hardware = { 881 .info = SNDRV_PCM_INFO_INTERLEAVED | 882 SNDRV_PCM_INFO_MMAP | 883 SNDRV_PCM_INFO_MMAP_VALID, 884 .buffer_bytes_max = 64 * 1024, 885 .period_bytes_min = 32, 886 .period_bytes_max = 8192, 887 .periods_min = 1, 888 .periods_max = 32, 889 .fifo_size = 256, 890 }; 891 892 static int rsnd_pcm_open(struct snd_pcm_substream *substream) 893 { 894 struct snd_pcm_runtime *runtime = substream->runtime; 895 int ret = 0; 896 897 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 898 899 ret = snd_pcm_hw_constraint_integer(runtime, 900 SNDRV_PCM_HW_PARAM_PERIODS); 901 902 return ret; 903 } 904 905 static int rsnd_hw_params(struct snd_pcm_substream *substream, 906 struct snd_pcm_hw_params *hw_params) 907 { 908 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 909 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 910 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 911 int ret; 912 913 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 914 if (ret) 915 return ret; 916 917 return snd_pcm_lib_malloc_pages(substream, 918 params_buffer_bytes(hw_params)); 919 } 920 921 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 922 { 923 struct snd_pcm_runtime *runtime = substream->runtime; 924 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 925 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 926 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 927 928 return bytes_to_frames(runtime, io->byte_pos); 929 } 930 931 static struct snd_pcm_ops rsnd_pcm_ops = { 932 .open = rsnd_pcm_open, 933 .ioctl = snd_pcm_lib_ioctl, 934 .hw_params = rsnd_hw_params, 935 .hw_free = snd_pcm_lib_free_pages, 936 .pointer = rsnd_pointer, 937 }; 938 939 /* 940 * snd_kcontrol 941 */ 942 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) 943 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 944 struct snd_ctl_elem_info *uinfo) 945 { 946 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 947 948 if (cfg->texts) { 949 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 950 uinfo->count = cfg->size; 951 uinfo->value.enumerated.items = cfg->max; 952 if (uinfo->value.enumerated.item >= cfg->max) 953 uinfo->value.enumerated.item = cfg->max - 1; 954 strlcpy(uinfo->value.enumerated.name, 955 cfg->texts[uinfo->value.enumerated.item], 956 sizeof(uinfo->value.enumerated.name)); 957 } else { 958 uinfo->count = cfg->size; 959 uinfo->value.integer.min = 0; 960 uinfo->value.integer.max = cfg->max; 961 uinfo->type = (cfg->max == 1) ? 962 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 963 SNDRV_CTL_ELEM_TYPE_INTEGER; 964 } 965 966 return 0; 967 } 968 969 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 970 struct snd_ctl_elem_value *uc) 971 { 972 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 973 int i; 974 975 for (i = 0; i < cfg->size; i++) 976 if (cfg->texts) 977 uc->value.enumerated.item[i] = cfg->val[i]; 978 else 979 uc->value.integer.value[i] = cfg->val[i]; 980 981 return 0; 982 } 983 984 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 985 struct snd_ctl_elem_value *uc) 986 { 987 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); 988 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 989 int i, change = 0; 990 991 for (i = 0; i < cfg->size; i++) { 992 if (cfg->texts) { 993 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 994 cfg->val[i] = uc->value.enumerated.item[i]; 995 } else { 996 change |= (uc->value.integer.value[i] != cfg->val[i]); 997 cfg->val[i] = uc->value.integer.value[i]; 998 } 999 } 1000 1001 if (change && cfg->update) 1002 cfg->update(cfg->io, mod); 1003 1004 return change; 1005 } 1006 1007 static int __rsnd_kctrl_new(struct rsnd_mod *mod, 1008 struct rsnd_dai_stream *io, 1009 struct snd_soc_pcm_runtime *rtd, 1010 const unsigned char *name, 1011 struct rsnd_kctrl_cfg *cfg, 1012 void (*update)(struct rsnd_dai_stream *io, 1013 struct rsnd_mod *mod)) 1014 { 1015 struct snd_card *card = rtd->card->snd_card; 1016 struct snd_kcontrol *kctrl; 1017 struct snd_kcontrol_new knew = { 1018 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1019 .name = name, 1020 .info = rsnd_kctrl_info, 1021 .index = rtd->num, 1022 .get = rsnd_kctrl_get, 1023 .put = rsnd_kctrl_put, 1024 .private_value = (unsigned long)cfg, 1025 }; 1026 int ret; 1027 1028 kctrl = snd_ctl_new1(&knew, mod); 1029 if (!kctrl) 1030 return -ENOMEM; 1031 1032 ret = snd_ctl_add(card, kctrl); 1033 if (ret < 0) { 1034 snd_ctl_free_one(kctrl); 1035 return ret; 1036 } 1037 1038 cfg->update = update; 1039 cfg->card = card; 1040 cfg->kctrl = kctrl; 1041 cfg->io = io; 1042 1043 return 0; 1044 } 1045 1046 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg) 1047 { 1048 if (cfg->card && cfg->kctrl) 1049 snd_ctl_remove(cfg->card, cfg->kctrl); 1050 1051 cfg->card = NULL; 1052 cfg->kctrl = NULL; 1053 } 1054 1055 int rsnd_kctrl_new_m(struct rsnd_mod *mod, 1056 struct rsnd_dai_stream *io, 1057 struct snd_soc_pcm_runtime *rtd, 1058 const unsigned char *name, 1059 void (*update)(struct rsnd_dai_stream *io, 1060 struct rsnd_mod *mod), 1061 struct rsnd_kctrl_cfg_m *_cfg, 1062 int ch_size, 1063 u32 max) 1064 { 1065 if (ch_size > RSND_MAX_CHANNELS) 1066 return -EINVAL; 1067 1068 _cfg->cfg.max = max; 1069 _cfg->cfg.size = ch_size; 1070 _cfg->cfg.val = _cfg->val; 1071 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1072 } 1073 1074 int rsnd_kctrl_new_s(struct rsnd_mod *mod, 1075 struct rsnd_dai_stream *io, 1076 struct snd_soc_pcm_runtime *rtd, 1077 const unsigned char *name, 1078 void (*update)(struct rsnd_dai_stream *io, 1079 struct rsnd_mod *mod), 1080 struct rsnd_kctrl_cfg_s *_cfg, 1081 u32 max) 1082 { 1083 _cfg->cfg.max = max; 1084 _cfg->cfg.size = 1; 1085 _cfg->cfg.val = &_cfg->val; 1086 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1087 } 1088 1089 int rsnd_kctrl_new_e(struct rsnd_mod *mod, 1090 struct rsnd_dai_stream *io, 1091 struct snd_soc_pcm_runtime *rtd, 1092 const unsigned char *name, 1093 struct rsnd_kctrl_cfg_s *_cfg, 1094 void (*update)(struct rsnd_dai_stream *io, 1095 struct rsnd_mod *mod), 1096 const char * const *texts, 1097 u32 max) 1098 { 1099 _cfg->cfg.max = max; 1100 _cfg->cfg.size = 1; 1101 _cfg->cfg.val = &_cfg->val; 1102 _cfg->cfg.texts = texts; 1103 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1104 } 1105 1106 /* 1107 * snd_soc_platform 1108 */ 1109 1110 #define PREALLOC_BUFFER (32 * 1024) 1111 #define PREALLOC_BUFFER_MAX (32 * 1024) 1112 1113 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1114 { 1115 struct snd_soc_dai *dai = rtd->cpu_dai; 1116 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1117 int ret; 1118 1119 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1120 if (ret) 1121 return ret; 1122 1123 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1124 if (ret) 1125 return ret; 1126 1127 return snd_pcm_lib_preallocate_pages_for_all( 1128 rtd->pcm, 1129 SNDRV_DMA_TYPE_CONTINUOUS, 1130 snd_dma_continuous_data(GFP_KERNEL), 1131 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1132 } 1133 1134 static struct snd_soc_platform_driver rsnd_soc_platform = { 1135 .ops = &rsnd_pcm_ops, 1136 .pcm_new = rsnd_pcm_new, 1137 }; 1138 1139 static const struct snd_soc_component_driver rsnd_soc_component = { 1140 .name = "rsnd", 1141 }; 1142 1143 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1144 struct rsnd_dai_stream *io) 1145 { 1146 int ret; 1147 1148 ret = rsnd_dai_call(probe, io, priv); 1149 if (ret == -EAGAIN) { 1150 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1151 struct rsnd_mod *mod; 1152 int i; 1153 1154 /* 1155 * Fallback to PIO mode 1156 */ 1157 1158 /* 1159 * call "remove" for SSI/SRC/DVC 1160 * SSI will be switch to PIO mode if it was DMA mode 1161 * see 1162 * rsnd_dma_init() 1163 * rsnd_ssi_fallback() 1164 */ 1165 rsnd_dai_call(remove, io, priv); 1166 1167 /* 1168 * remove all mod from io 1169 * and, re connect ssi 1170 */ 1171 for_each_rsnd_mod(i, mod, io) 1172 rsnd_dai_disconnect(mod, io, i); 1173 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1174 1175 /* 1176 * fallback 1177 */ 1178 rsnd_dai_call(fallback, io, priv); 1179 1180 /* 1181 * retry to "probe". 1182 * DAI has SSI which is PIO mode only now. 1183 */ 1184 ret = rsnd_dai_call(probe, io, priv); 1185 } 1186 1187 return ret; 1188 } 1189 1190 /* 1191 * rsnd probe 1192 */ 1193 static int rsnd_probe(struct platform_device *pdev) 1194 { 1195 struct rsnd_priv *priv; 1196 struct device *dev = &pdev->dev; 1197 struct rsnd_dai *rdai; 1198 int (*probe_func[])(struct rsnd_priv *priv) = { 1199 rsnd_gen_probe, 1200 rsnd_dma_probe, 1201 rsnd_ssi_probe, 1202 rsnd_ssiu_probe, 1203 rsnd_src_probe, 1204 rsnd_ctu_probe, 1205 rsnd_mix_probe, 1206 rsnd_dvc_probe, 1207 rsnd_cmd_probe, 1208 rsnd_adg_probe, 1209 rsnd_dai_probe, 1210 }; 1211 int ret, i; 1212 1213 /* 1214 * init priv data 1215 */ 1216 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1217 if (!priv) { 1218 dev_err(dev, "priv allocate failed\n"); 1219 return -ENODEV; 1220 } 1221 1222 priv->pdev = pdev; 1223 priv->flags = (unsigned long)of_device_get_match_data(dev); 1224 spin_lock_init(&priv->lock); 1225 1226 /* 1227 * init each module 1228 */ 1229 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1230 ret = probe_func[i](priv); 1231 if (ret) 1232 return ret; 1233 } 1234 1235 for_each_rsnd_dai(rdai, priv, i) { 1236 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1237 if (ret) 1238 goto exit_snd_probe; 1239 1240 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1241 if (ret) 1242 goto exit_snd_probe; 1243 } 1244 1245 dev_set_drvdata(dev, priv); 1246 1247 /* 1248 * asoc register 1249 */ 1250 ret = snd_soc_register_platform(dev, &rsnd_soc_platform); 1251 if (ret < 0) { 1252 dev_err(dev, "cannot snd soc register\n"); 1253 return ret; 1254 } 1255 1256 ret = snd_soc_register_component(dev, &rsnd_soc_component, 1257 priv->daidrv, rsnd_rdai_nr(priv)); 1258 if (ret < 0) { 1259 dev_err(dev, "cannot snd dai register\n"); 1260 goto exit_snd_soc; 1261 } 1262 1263 pm_runtime_enable(dev); 1264 1265 dev_info(dev, "probed\n"); 1266 return ret; 1267 1268 exit_snd_soc: 1269 snd_soc_unregister_platform(dev); 1270 exit_snd_probe: 1271 for_each_rsnd_dai(rdai, priv, i) { 1272 rsnd_dai_call(remove, &rdai->playback, priv); 1273 rsnd_dai_call(remove, &rdai->capture, priv); 1274 } 1275 1276 return ret; 1277 } 1278 1279 static int rsnd_remove(struct platform_device *pdev) 1280 { 1281 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1282 struct rsnd_dai *rdai; 1283 void (*remove_func[])(struct rsnd_priv *priv) = { 1284 rsnd_ssi_remove, 1285 rsnd_ssiu_remove, 1286 rsnd_src_remove, 1287 rsnd_ctu_remove, 1288 rsnd_mix_remove, 1289 rsnd_dvc_remove, 1290 rsnd_cmd_remove, 1291 rsnd_adg_remove, 1292 }; 1293 int ret = 0, i; 1294 1295 pm_runtime_disable(&pdev->dev); 1296 1297 for_each_rsnd_dai(rdai, priv, i) { 1298 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1299 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1300 } 1301 1302 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1303 remove_func[i](priv); 1304 1305 snd_soc_unregister_component(&pdev->dev); 1306 snd_soc_unregister_platform(&pdev->dev); 1307 1308 return ret; 1309 } 1310 1311 static int rsnd_suspend(struct device *dev) 1312 { 1313 struct rsnd_priv *priv = dev_get_drvdata(dev); 1314 1315 rsnd_adg_clk_disable(priv); 1316 1317 return 0; 1318 } 1319 1320 static int rsnd_resume(struct device *dev) 1321 { 1322 struct rsnd_priv *priv = dev_get_drvdata(dev); 1323 1324 rsnd_adg_clk_enable(priv); 1325 1326 return 0; 1327 } 1328 1329 static struct dev_pm_ops rsnd_pm_ops = { 1330 .suspend = rsnd_suspend, 1331 .resume = rsnd_resume, 1332 }; 1333 1334 static struct platform_driver rsnd_driver = { 1335 .driver = { 1336 .name = "rcar_sound", 1337 .pm = &rsnd_pm_ops, 1338 .of_match_table = rsnd_of_match, 1339 }, 1340 .probe = rsnd_probe, 1341 .remove = rsnd_remove, 1342 }; 1343 module_platform_driver(rsnd_driver); 1344 1345 MODULE_LICENSE("GPL"); 1346 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1347 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1348 MODULE_ALIAS("platform:rcar-pcm-audio"); 1349