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_192000 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 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 114 { 115 if (mod->type != type) { 116 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 117 struct device *dev = rsnd_priv_to_dev(priv); 118 119 dev_warn(dev, "%s[%d] is not your expected module\n", 120 rsnd_mod_name(mod), rsnd_mod_id(mod)); 121 } 122 } 123 124 char *rsnd_mod_name(struct rsnd_mod *mod) 125 { 126 if (!mod || !mod->ops) 127 return "unknown"; 128 129 return mod->ops->name; 130 } 131 132 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 133 struct rsnd_mod *mod) 134 { 135 if (!mod || !mod->ops || !mod->ops->dma_req) 136 return NULL; 137 138 return mod->ops->dma_req(io, mod); 139 } 140 141 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io, 142 struct rsnd_mod *mod, 143 enum rsnd_mod_type type) 144 { 145 return &mod->status; 146 } 147 148 int rsnd_mod_init(struct rsnd_priv *priv, 149 struct rsnd_mod *mod, 150 struct rsnd_mod_ops *ops, 151 struct clk *clk, 152 u32* (*get_status)(struct rsnd_dai_stream *io, 153 struct rsnd_mod *mod, 154 enum rsnd_mod_type type), 155 enum rsnd_mod_type type, 156 int id) 157 { 158 int ret = clk_prepare(clk); 159 160 if (ret) 161 return ret; 162 163 mod->id = id; 164 mod->ops = ops; 165 mod->type = type; 166 mod->clk = clk; 167 mod->priv = priv; 168 mod->get_status = get_status; 169 170 return ret; 171 } 172 173 void rsnd_mod_quit(struct rsnd_mod *mod) 174 { 175 if (mod->clk) 176 clk_unprepare(mod->clk); 177 mod->clk = NULL; 178 } 179 180 void rsnd_mod_interrupt(struct rsnd_mod *mod, 181 void (*callback)(struct rsnd_mod *mod, 182 struct rsnd_dai_stream *io)) 183 { 184 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 185 struct rsnd_dai_stream *io; 186 struct rsnd_dai *rdai; 187 int i; 188 189 for_each_rsnd_dai(rdai, priv, i) { 190 io = &rdai->playback; 191 if (mod == io->mod[mod->type]) 192 callback(mod, io); 193 194 io = &rdai->capture; 195 if (mod == io->mod[mod->type]) 196 callback(mod, io); 197 } 198 } 199 200 int rsnd_io_is_working(struct rsnd_dai_stream *io) 201 { 202 /* see rsnd_dai_stream_init/quit() */ 203 return !!io->substream; 204 } 205 206 void rsnd_set_slot(struct rsnd_dai *rdai, 207 int slots, int num) 208 { 209 rdai->slots = slots; 210 rdai->slots_num = num; 211 } 212 213 int rsnd_get_slot(struct rsnd_dai_stream *io) 214 { 215 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 216 217 return rdai->slots; 218 } 219 220 int rsnd_get_slot_num(struct rsnd_dai_stream *io) 221 { 222 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 223 224 return rdai->slots_num; 225 } 226 227 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io) 228 { 229 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 230 231 return runtime->channels; 232 } 233 234 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io) 235 { 236 int chan = rsnd_runtime_channel_original(io); 237 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 238 239 if (ctu_mod) { 240 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod); 241 242 if (converted_chan) 243 return converted_chan; 244 } 245 246 return chan; 247 } 248 249 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io) 250 { 251 int chan = rsnd_io_is_play(io) ? 252 rsnd_runtime_channel_after_ctu(io) : 253 rsnd_runtime_channel_original(io); 254 255 /* Use Multi SSI */ 256 if (rsnd_runtime_is_ssi_multi(io)) 257 chan /= rsnd_get_slot_num(io); 258 259 /* TDM Extend Mode needs 8ch */ 260 if (chan == 6) 261 chan = 8; 262 263 return chan; 264 } 265 266 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io) 267 { 268 int slots = rsnd_get_slot_num(io); 269 int chan = rsnd_io_is_play(io) ? 270 rsnd_runtime_channel_after_ctu(io) : 271 rsnd_runtime_channel_original(io); 272 273 return (chan >= 6) && (slots > 1); 274 } 275 276 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io) 277 { 278 return rsnd_runtime_channel_for_ssi(io) >= 6; 279 } 280 281 /* 282 * ADINR function 283 */ 284 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 285 { 286 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 287 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 288 struct device *dev = rsnd_priv_to_dev(priv); 289 290 switch (runtime->sample_bits) { 291 case 16: 292 return 8 << 16; 293 case 32: 294 return 0 << 16; 295 } 296 297 dev_warn(dev, "not supported sample bits\n"); 298 299 return 0; 300 } 301 302 /* 303 * DALIGN function 304 */ 305 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 306 { 307 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); 308 struct rsnd_mod *target; 309 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 310 u32 val = 0x76543210; 311 u32 mask = ~0; 312 313 if (rsnd_io_is_play(io)) { 314 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 315 316 target = src ? src : ssiu; 317 } else { 318 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 319 320 target = cmd ? cmd : ssiu; 321 } 322 323 mask <<= runtime->channels * 4; 324 val = val & mask; 325 326 switch (runtime->sample_bits) { 327 case 16: 328 val |= 0x67452301 & ~mask; 329 break; 330 case 32: 331 val |= 0x76543210 & ~mask; 332 break; 333 } 334 335 /* 336 * exchange channeles on SRC if possible, 337 * otherwise, R/L volume settings on DVC 338 * changes inverted channels 339 */ 340 if (mod == target) 341 return val; 342 else 343 return 0x76543210; 344 } 345 346 /* 347 * rsnd_dai functions 348 */ 349 struct rsnd_mod *rsnd_mod_next(int *iterator, 350 struct rsnd_dai_stream *io, 351 enum rsnd_mod_type *array, 352 int array_size) 353 { 354 struct rsnd_mod *mod; 355 enum rsnd_mod_type type; 356 int max = array ? array_size : RSND_MOD_MAX; 357 358 for (; *iterator < max; (*iterator)++) { 359 type = (array) ? array[*iterator] : *iterator; 360 mod = io->mod[type]; 361 if (!mod) 362 continue; 363 364 return mod; 365 } 366 367 return NULL; 368 } 369 370 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 371 { 372 /* CAPTURE */ 373 RSND_MOD_AUDMAPP, 374 RSND_MOD_AUDMA, 375 RSND_MOD_DVC, 376 RSND_MOD_MIX, 377 RSND_MOD_CTU, 378 RSND_MOD_CMD, 379 RSND_MOD_SRC, 380 RSND_MOD_SSIU, 381 RSND_MOD_SSIM3, 382 RSND_MOD_SSIM2, 383 RSND_MOD_SSIM1, 384 RSND_MOD_SSIP, 385 RSND_MOD_SSI, 386 }, { 387 /* PLAYBACK */ 388 RSND_MOD_AUDMAPP, 389 RSND_MOD_AUDMA, 390 RSND_MOD_SSIM3, 391 RSND_MOD_SSIM2, 392 RSND_MOD_SSIM1, 393 RSND_MOD_SSIP, 394 RSND_MOD_SSI, 395 RSND_MOD_SSIU, 396 RSND_MOD_DVC, 397 RSND_MOD_MIX, 398 RSND_MOD_CTU, 399 RSND_MOD_CMD, 400 RSND_MOD_SRC, 401 }, 402 }; 403 404 static int rsnd_status_update(u32 *status, 405 int shift, int add, int timing) 406 { 407 u32 mask = 0xF << shift; 408 u8 val = (*status >> shift) & 0xF; 409 u8 next_val = (val + add) & 0xF; 410 int func_call = (val == timing); 411 412 if (next_val == 0xF) /* underflow case */ 413 func_call = 0; 414 else 415 *status = (*status & ~mask) + (next_val << shift); 416 417 return func_call; 418 } 419 420 #define rsnd_dai_call(fn, io, param...) \ 421 ({ \ 422 struct rsnd_priv *priv = rsnd_io_to_priv(io); \ 423 struct device *dev = rsnd_priv_to_dev(priv); \ 424 struct rsnd_mod *mod; \ 425 int is_play = rsnd_io_is_play(io); \ 426 int ret = 0, i; \ 427 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 428 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 429 int tmp = 0; \ 430 u32 *status = mod->get_status(io, mod, types[i]); \ 431 int func_call = rsnd_status_update(status, \ 432 __rsnd_mod_shift_##fn, \ 433 __rsnd_mod_add_##fn, \ 434 __rsnd_mod_call_##fn); \ 435 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \ 436 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \ 437 (func_call && (mod)->ops->fn) ? #fn : ""); \ 438 if (func_call && (mod)->ops->fn) \ 439 tmp = (mod)->ops->fn(mod, io, param); \ 440 if (tmp) \ 441 dev_err(dev, "%s[%d] : %s error %d\n", \ 442 rsnd_mod_name(mod), rsnd_mod_id(mod), \ 443 #fn, tmp); \ 444 ret |= tmp; \ 445 } \ 446 ret; \ 447 }) 448 449 int rsnd_dai_connect(struct rsnd_mod *mod, 450 struct rsnd_dai_stream *io, 451 enum rsnd_mod_type type) 452 { 453 struct rsnd_priv *priv; 454 struct device *dev; 455 456 if (!mod) 457 return -EIO; 458 459 if (io->mod[type] == mod) 460 return 0; 461 462 if (io->mod[type]) 463 return -EINVAL; 464 465 priv = rsnd_mod_to_priv(mod); 466 dev = rsnd_priv_to_dev(priv); 467 468 io->mod[type] = mod; 469 470 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 471 rsnd_mod_name(mod), rsnd_mod_id(mod), 472 rsnd_io_is_play(io) ? "Playback" : "Capture"); 473 474 return 0; 475 } 476 477 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 478 struct rsnd_dai_stream *io, 479 enum rsnd_mod_type type) 480 { 481 io->mod[type] = NULL; 482 } 483 484 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 485 { 486 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 487 return NULL; 488 489 return priv->rdai + id; 490 } 491 492 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 493 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 494 { 495 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 496 497 return rsnd_rdai_get(priv, dai->id); 498 } 499 500 /* 501 * rsnd_soc_dai functions 502 */ 503 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) 504 { 505 struct snd_pcm_substream *substream = io->substream; 506 struct snd_pcm_runtime *runtime = substream->runtime; 507 int pos = io->byte_pos + additional; 508 509 pos %= (runtime->periods * io->byte_per_period); 510 511 return pos; 512 } 513 514 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) 515 { 516 io->byte_pos += byte; 517 518 if (io->byte_pos >= io->next_period_byte) { 519 struct snd_pcm_substream *substream = io->substream; 520 struct snd_pcm_runtime *runtime = substream->runtime; 521 522 io->period_pos++; 523 io->next_period_byte += io->byte_per_period; 524 525 if (io->period_pos >= runtime->periods) { 526 io->byte_pos = 0; 527 io->period_pos = 0; 528 io->next_period_byte = io->byte_per_period; 529 } 530 531 return true; 532 } 533 534 return false; 535 } 536 537 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 538 { 539 struct snd_pcm_substream *substream = io->substream; 540 541 /* 542 * this function should be called... 543 * 544 * - if rsnd_dai_pointer_update() returns true 545 * - without spin lock 546 */ 547 548 snd_pcm_period_elapsed(substream); 549 } 550 551 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 552 struct snd_pcm_substream *substream) 553 { 554 struct snd_pcm_runtime *runtime = substream->runtime; 555 556 io->substream = substream; 557 io->byte_pos = 0; 558 io->period_pos = 0; 559 io->byte_per_period = runtime->period_size * 560 runtime->channels * 561 samples_to_bytes(runtime, 1); 562 io->next_period_byte = io->byte_per_period; 563 } 564 565 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 566 { 567 io->substream = NULL; 568 } 569 570 static 571 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 572 { 573 struct snd_soc_pcm_runtime *rtd = substream->private_data; 574 575 return rtd->cpu_dai; 576 } 577 578 static 579 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 580 struct snd_pcm_substream *substream) 581 { 582 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 583 return &rdai->playback; 584 else 585 return &rdai->capture; 586 } 587 588 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 589 struct snd_soc_dai *dai) 590 { 591 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 592 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 593 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 594 int ret; 595 unsigned long flags; 596 597 spin_lock_irqsave(&priv->lock, flags); 598 599 switch (cmd) { 600 case SNDRV_PCM_TRIGGER_START: 601 case SNDRV_PCM_TRIGGER_RESUME: 602 rsnd_dai_stream_init(io, substream); 603 604 ret = rsnd_dai_call(init, io, priv); 605 if (ret < 0) 606 goto dai_trigger_end; 607 608 ret = rsnd_dai_call(start, io, priv); 609 if (ret < 0) 610 goto dai_trigger_end; 611 612 ret = rsnd_dai_call(irq, io, priv, 1); 613 if (ret < 0) 614 goto dai_trigger_end; 615 616 break; 617 case SNDRV_PCM_TRIGGER_STOP: 618 case SNDRV_PCM_TRIGGER_SUSPEND: 619 ret = rsnd_dai_call(irq, io, priv, 0); 620 621 ret |= rsnd_dai_call(stop, io, priv); 622 623 ret |= rsnd_dai_call(quit, io, priv); 624 625 rsnd_dai_stream_quit(io); 626 break; 627 default: 628 ret = -EINVAL; 629 } 630 631 dai_trigger_end: 632 spin_unlock_irqrestore(&priv->lock, flags); 633 634 return ret; 635 } 636 637 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 638 { 639 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 640 641 /* set master/slave audio interface */ 642 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 643 case SND_SOC_DAIFMT_CBM_CFM: 644 rdai->clk_master = 0; 645 break; 646 case SND_SOC_DAIFMT_CBS_CFS: 647 rdai->clk_master = 1; /* codec is slave, cpu is master */ 648 break; 649 default: 650 return -EINVAL; 651 } 652 653 /* set format */ 654 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 655 case SND_SOC_DAIFMT_I2S: 656 rdai->sys_delay = 0; 657 rdai->data_alignment = 0; 658 rdai->frm_clk_inv = 0; 659 break; 660 case SND_SOC_DAIFMT_LEFT_J: 661 rdai->sys_delay = 1; 662 rdai->data_alignment = 0; 663 rdai->frm_clk_inv = 1; 664 break; 665 case SND_SOC_DAIFMT_RIGHT_J: 666 rdai->sys_delay = 1; 667 rdai->data_alignment = 1; 668 rdai->frm_clk_inv = 1; 669 break; 670 } 671 672 /* set clock inversion */ 673 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 674 case SND_SOC_DAIFMT_NB_IF: 675 rdai->frm_clk_inv = !rdai->frm_clk_inv; 676 break; 677 case SND_SOC_DAIFMT_IB_NF: 678 rdai->bit_clk_inv = !rdai->bit_clk_inv; 679 break; 680 case SND_SOC_DAIFMT_IB_IF: 681 rdai->bit_clk_inv = !rdai->bit_clk_inv; 682 rdai->frm_clk_inv = !rdai->frm_clk_inv; 683 break; 684 case SND_SOC_DAIFMT_NB_NF: 685 default: 686 break; 687 } 688 689 return 0; 690 } 691 692 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 693 u32 tx_mask, u32 rx_mask, 694 int slots, int slot_width) 695 { 696 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 697 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 698 struct device *dev = rsnd_priv_to_dev(priv); 699 700 switch (slots) { 701 case 6: 702 /* TDM Extend Mode */ 703 rsnd_set_slot(rdai, slots, 1); 704 break; 705 default: 706 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 707 return -EINVAL; 708 } 709 710 return 0; 711 } 712 713 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 714 struct snd_soc_dai *dai) 715 { 716 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 717 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 718 719 /* 720 * call rsnd_dai_call without spinlock 721 */ 722 return rsnd_dai_call(nolock_start, io, priv); 723 } 724 725 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 726 struct snd_soc_dai *dai) 727 { 728 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 729 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 730 731 /* 732 * call rsnd_dai_call without spinlock 733 */ 734 rsnd_dai_call(nolock_stop, io, priv); 735 } 736 737 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 738 .startup = rsnd_soc_dai_startup, 739 .shutdown = rsnd_soc_dai_shutdown, 740 .trigger = rsnd_soc_dai_trigger, 741 .set_fmt = rsnd_soc_dai_set_fmt, 742 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 743 }; 744 745 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 746 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 747 struct device_node *node, 748 struct device_node *playback, 749 struct device_node *capture) 750 { 751 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 752 struct device_node *np; 753 struct rsnd_mod *mod; 754 int i; 755 756 if (!node) 757 return; 758 759 i = 0; 760 for_each_child_of_node(node, np) { 761 mod = mod_get(priv, i); 762 if (np == playback) 763 rsnd_dai_connect(mod, &rdai->playback, mod->type); 764 if (np == capture) 765 rsnd_dai_connect(mod, &rdai->capture, mod->type); 766 i++; 767 } 768 769 of_node_put(node); 770 } 771 772 static int rsnd_dai_probe(struct rsnd_priv *priv) 773 { 774 struct device_node *dai_node; 775 struct device_node *dai_np; 776 struct device_node *playback, *capture; 777 struct rsnd_dai_stream *io_playback; 778 struct rsnd_dai_stream *io_capture; 779 struct snd_soc_dai_driver *rdrv, *drv; 780 struct rsnd_dai *rdai; 781 struct device *dev = rsnd_priv_to_dev(priv); 782 int nr, dai_i, io_i; 783 int ret; 784 785 dai_node = rsnd_dai_of_node(priv); 786 nr = of_get_child_count(dai_node); 787 if (!nr) { 788 ret = -EINVAL; 789 goto rsnd_dai_probe_done; 790 } 791 792 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL); 793 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL); 794 if (!rdrv || !rdai) { 795 ret = -ENOMEM; 796 goto rsnd_dai_probe_done; 797 } 798 799 priv->rdai_nr = nr; 800 priv->daidrv = rdrv; 801 priv->rdai = rdai; 802 803 /* 804 * parse all dai 805 */ 806 dai_i = 0; 807 for_each_child_of_node(dai_node, dai_np) { 808 rdai = rsnd_rdai_get(priv, dai_i); 809 drv = rdrv + dai_i; 810 io_playback = &rdai->playback; 811 io_capture = &rdai->capture; 812 813 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 814 815 rdai->priv = priv; 816 drv->name = rdai->name; 817 drv->ops = &rsnd_soc_dai_ops; 818 819 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE, 820 "DAI%d Playback", dai_i); 821 drv->playback.rates = RSND_RATES; 822 drv->playback.formats = RSND_FMTS; 823 drv->playback.channels_min = 2; 824 drv->playback.channels_max = 6; 825 drv->playback.stream_name = rdai->playback.name; 826 827 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, 828 "DAI%d Capture", dai_i); 829 drv->capture.rates = RSND_RATES; 830 drv->capture.formats = RSND_FMTS; 831 drv->capture.channels_min = 2; 832 drv->capture.channels_max = 6; 833 drv->capture.stream_name = rdai->capture.name; 834 835 rdai->playback.rdai = rdai; 836 rdai->capture.rdai = rdai; 837 rsnd_set_slot(rdai, 2, 1); /* default */ 838 839 for (io_i = 0;; io_i++) { 840 playback = of_parse_phandle(dai_np, "playback", io_i); 841 capture = of_parse_phandle(dai_np, "capture", io_i); 842 843 if (!playback && !capture) 844 break; 845 846 rsnd_parse_connect_ssi(rdai, playback, capture); 847 rsnd_parse_connect_src(rdai, playback, capture); 848 rsnd_parse_connect_ctu(rdai, playback, capture); 849 rsnd_parse_connect_mix(rdai, playback, capture); 850 rsnd_parse_connect_dvc(rdai, playback, capture); 851 852 of_node_put(playback); 853 of_node_put(capture); 854 } 855 856 dai_i++; 857 858 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 859 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 860 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 861 } 862 863 ret = 0; 864 865 rsnd_dai_probe_done: 866 of_node_put(dai_node); 867 868 return ret; 869 } 870 871 /* 872 * pcm ops 873 */ 874 static struct snd_pcm_hardware rsnd_pcm_hardware = { 875 .info = SNDRV_PCM_INFO_INTERLEAVED | 876 SNDRV_PCM_INFO_MMAP | 877 SNDRV_PCM_INFO_MMAP_VALID, 878 .buffer_bytes_max = 64 * 1024, 879 .period_bytes_min = 32, 880 .period_bytes_max = 8192, 881 .periods_min = 1, 882 .periods_max = 32, 883 .fifo_size = 256, 884 }; 885 886 static int rsnd_pcm_open(struct snd_pcm_substream *substream) 887 { 888 struct snd_pcm_runtime *runtime = substream->runtime; 889 int ret = 0; 890 891 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 892 893 ret = snd_pcm_hw_constraint_integer(runtime, 894 SNDRV_PCM_HW_PARAM_PERIODS); 895 896 return ret; 897 } 898 899 static int rsnd_hw_params(struct snd_pcm_substream *substream, 900 struct snd_pcm_hw_params *hw_params) 901 { 902 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 903 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 904 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 905 int ret; 906 907 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 908 if (ret) 909 return ret; 910 911 return snd_pcm_lib_malloc_pages(substream, 912 params_buffer_bytes(hw_params)); 913 } 914 915 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 916 { 917 struct snd_pcm_runtime *runtime = substream->runtime; 918 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 919 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 920 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 921 922 return bytes_to_frames(runtime, io->byte_pos); 923 } 924 925 static struct snd_pcm_ops rsnd_pcm_ops = { 926 .open = rsnd_pcm_open, 927 .ioctl = snd_pcm_lib_ioctl, 928 .hw_params = rsnd_hw_params, 929 .hw_free = snd_pcm_lib_free_pages, 930 .pointer = rsnd_pointer, 931 }; 932 933 /* 934 * snd_kcontrol 935 */ 936 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) 937 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 938 struct snd_ctl_elem_info *uinfo) 939 { 940 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 941 942 if (cfg->texts) { 943 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 944 uinfo->count = cfg->size; 945 uinfo->value.enumerated.items = cfg->max; 946 if (uinfo->value.enumerated.item >= cfg->max) 947 uinfo->value.enumerated.item = cfg->max - 1; 948 strlcpy(uinfo->value.enumerated.name, 949 cfg->texts[uinfo->value.enumerated.item], 950 sizeof(uinfo->value.enumerated.name)); 951 } else { 952 uinfo->count = cfg->size; 953 uinfo->value.integer.min = 0; 954 uinfo->value.integer.max = cfg->max; 955 uinfo->type = (cfg->max == 1) ? 956 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 957 SNDRV_CTL_ELEM_TYPE_INTEGER; 958 } 959 960 return 0; 961 } 962 963 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 964 struct snd_ctl_elem_value *uc) 965 { 966 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 967 int i; 968 969 for (i = 0; i < cfg->size; i++) 970 if (cfg->texts) 971 uc->value.enumerated.item[i] = cfg->val[i]; 972 else 973 uc->value.integer.value[i] = cfg->val[i]; 974 975 return 0; 976 } 977 978 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 979 struct snd_ctl_elem_value *uc) 980 { 981 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); 982 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 983 int i, change = 0; 984 985 for (i = 0; i < cfg->size; i++) { 986 if (cfg->texts) { 987 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 988 cfg->val[i] = uc->value.enumerated.item[i]; 989 } else { 990 change |= (uc->value.integer.value[i] != cfg->val[i]); 991 cfg->val[i] = uc->value.integer.value[i]; 992 } 993 } 994 995 if (change && cfg->update) 996 cfg->update(cfg->io, mod); 997 998 return change; 999 } 1000 1001 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg) 1002 { 1003 cfg->cfg.val = cfg->val; 1004 1005 return &cfg->cfg; 1006 } 1007 1008 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg) 1009 { 1010 cfg->cfg.val = &cfg->val; 1011 1012 return &cfg->cfg; 1013 } 1014 1015 int rsnd_kctrl_new(struct rsnd_mod *mod, 1016 struct rsnd_dai_stream *io, 1017 struct snd_soc_pcm_runtime *rtd, 1018 const unsigned char *name, 1019 void (*update)(struct rsnd_dai_stream *io, 1020 struct rsnd_mod *mod), 1021 struct rsnd_kctrl_cfg *cfg, 1022 const char * const *texts, 1023 int size, 1024 u32 max) 1025 { 1026 struct snd_card *card = rtd->card->snd_card; 1027 struct snd_kcontrol *kctrl; 1028 struct snd_kcontrol_new knew = { 1029 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1030 .name = name, 1031 .info = rsnd_kctrl_info, 1032 .index = rtd->num, 1033 .get = rsnd_kctrl_get, 1034 .put = rsnd_kctrl_put, 1035 .private_value = (unsigned long)cfg, 1036 }; 1037 int ret; 1038 1039 if (size > RSND_MAX_CHANNELS) 1040 return -EINVAL; 1041 1042 kctrl = snd_ctl_new1(&knew, mod); 1043 if (!kctrl) 1044 return -ENOMEM; 1045 1046 ret = snd_ctl_add(card, kctrl); 1047 if (ret < 0) 1048 return ret; 1049 1050 cfg->texts = texts; 1051 cfg->max = max; 1052 cfg->size = size; 1053 cfg->update = update; 1054 cfg->card = card; 1055 cfg->kctrl = kctrl; 1056 cfg->io = io; 1057 1058 return 0; 1059 } 1060 1061 /* 1062 * snd_soc_platform 1063 */ 1064 1065 #define PREALLOC_BUFFER (32 * 1024) 1066 #define PREALLOC_BUFFER_MAX (32 * 1024) 1067 1068 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1069 { 1070 struct snd_soc_dai *dai = rtd->cpu_dai; 1071 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1072 int ret; 1073 1074 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1075 if (ret) 1076 return ret; 1077 1078 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1079 if (ret) 1080 return ret; 1081 1082 return snd_pcm_lib_preallocate_pages_for_all( 1083 rtd->pcm, 1084 SNDRV_DMA_TYPE_CONTINUOUS, 1085 snd_dma_continuous_data(GFP_KERNEL), 1086 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1087 } 1088 1089 static struct snd_soc_platform_driver rsnd_soc_platform = { 1090 .ops = &rsnd_pcm_ops, 1091 .pcm_new = rsnd_pcm_new, 1092 }; 1093 1094 static const struct snd_soc_component_driver rsnd_soc_component = { 1095 .name = "rsnd", 1096 }; 1097 1098 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1099 struct rsnd_dai_stream *io) 1100 { 1101 int ret; 1102 1103 ret = rsnd_dai_call(probe, io, priv); 1104 if (ret == -EAGAIN) { 1105 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1106 struct rsnd_mod *mod; 1107 int i; 1108 1109 /* 1110 * Fallback to PIO mode 1111 */ 1112 1113 /* 1114 * call "remove" for SSI/SRC/DVC 1115 * SSI will be switch to PIO mode if it was DMA mode 1116 * see 1117 * rsnd_dma_init() 1118 * rsnd_ssi_fallback() 1119 */ 1120 rsnd_dai_call(remove, io, priv); 1121 1122 /* 1123 * remove all mod from io 1124 * and, re connect ssi 1125 */ 1126 for_each_rsnd_mod(i, mod, io) 1127 rsnd_dai_disconnect(mod, io, i); 1128 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1129 1130 /* 1131 * fallback 1132 */ 1133 rsnd_dai_call(fallback, io, priv); 1134 1135 /* 1136 * retry to "probe". 1137 * DAI has SSI which is PIO mode only now. 1138 */ 1139 ret = rsnd_dai_call(probe, io, priv); 1140 } 1141 1142 return ret; 1143 } 1144 1145 /* 1146 * rsnd probe 1147 */ 1148 static int rsnd_probe(struct platform_device *pdev) 1149 { 1150 struct rsnd_priv *priv; 1151 struct device *dev = &pdev->dev; 1152 struct rsnd_dai *rdai; 1153 int (*probe_func[])(struct rsnd_priv *priv) = { 1154 rsnd_gen_probe, 1155 rsnd_dma_probe, 1156 rsnd_ssi_probe, 1157 rsnd_ssiu_probe, 1158 rsnd_src_probe, 1159 rsnd_ctu_probe, 1160 rsnd_mix_probe, 1161 rsnd_dvc_probe, 1162 rsnd_cmd_probe, 1163 rsnd_adg_probe, 1164 rsnd_dai_probe, 1165 }; 1166 int ret, i; 1167 1168 /* 1169 * init priv data 1170 */ 1171 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1172 if (!priv) { 1173 dev_err(dev, "priv allocate failed\n"); 1174 return -ENODEV; 1175 } 1176 1177 priv->pdev = pdev; 1178 priv->flags = (unsigned long)of_device_get_match_data(dev); 1179 spin_lock_init(&priv->lock); 1180 1181 /* 1182 * init each module 1183 */ 1184 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1185 ret = probe_func[i](priv); 1186 if (ret) 1187 return ret; 1188 } 1189 1190 for_each_rsnd_dai(rdai, priv, i) { 1191 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1192 if (ret) 1193 goto exit_snd_probe; 1194 1195 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1196 if (ret) 1197 goto exit_snd_probe; 1198 } 1199 1200 dev_set_drvdata(dev, priv); 1201 1202 /* 1203 * asoc register 1204 */ 1205 ret = snd_soc_register_platform(dev, &rsnd_soc_platform); 1206 if (ret < 0) { 1207 dev_err(dev, "cannot snd soc register\n"); 1208 return ret; 1209 } 1210 1211 ret = snd_soc_register_component(dev, &rsnd_soc_component, 1212 priv->daidrv, rsnd_rdai_nr(priv)); 1213 if (ret < 0) { 1214 dev_err(dev, "cannot snd dai register\n"); 1215 goto exit_snd_soc; 1216 } 1217 1218 pm_runtime_enable(dev); 1219 1220 dev_info(dev, "probed\n"); 1221 return ret; 1222 1223 exit_snd_soc: 1224 snd_soc_unregister_platform(dev); 1225 exit_snd_probe: 1226 for_each_rsnd_dai(rdai, priv, i) { 1227 rsnd_dai_call(remove, &rdai->playback, priv); 1228 rsnd_dai_call(remove, &rdai->capture, priv); 1229 } 1230 1231 return ret; 1232 } 1233 1234 static int rsnd_remove(struct platform_device *pdev) 1235 { 1236 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1237 struct rsnd_dai *rdai; 1238 void (*remove_func[])(struct rsnd_priv *priv) = { 1239 rsnd_ssi_remove, 1240 rsnd_ssiu_remove, 1241 rsnd_src_remove, 1242 rsnd_ctu_remove, 1243 rsnd_mix_remove, 1244 rsnd_dvc_remove, 1245 rsnd_cmd_remove, 1246 rsnd_adg_remove, 1247 }; 1248 int ret = 0, i; 1249 1250 pm_runtime_disable(&pdev->dev); 1251 1252 for_each_rsnd_dai(rdai, priv, i) { 1253 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1254 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1255 } 1256 1257 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1258 remove_func[i](priv); 1259 1260 snd_soc_unregister_component(&pdev->dev); 1261 snd_soc_unregister_platform(&pdev->dev); 1262 1263 return ret; 1264 } 1265 1266 static int rsnd_suspend(struct device *dev) 1267 { 1268 struct rsnd_priv *priv = dev_get_drvdata(dev); 1269 1270 rsnd_adg_clk_disable(priv); 1271 1272 return 0; 1273 } 1274 1275 static int rsnd_resume(struct device *dev) 1276 { 1277 struct rsnd_priv *priv = dev_get_drvdata(dev); 1278 1279 rsnd_adg_clk_enable(priv); 1280 1281 return 0; 1282 } 1283 1284 static struct dev_pm_ops rsnd_pm_ops = { 1285 .suspend = rsnd_suspend, 1286 .resume = rsnd_resume, 1287 }; 1288 1289 static struct platform_driver rsnd_driver = { 1290 .driver = { 1291 .name = "rcar_sound", 1292 .pm = &rsnd_pm_ops, 1293 .of_match_table = rsnd_of_match, 1294 }, 1295 .probe = rsnd_probe, 1296 .remove = rsnd_remove, 1297 }; 1298 module_platform_driver(rsnd_driver); 1299 1300 MODULE_LICENSE("GPL"); 1301 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1302 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1303 MODULE_ALIAS("platform:rcar-pcm-audio"); 1304