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 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 *ssi = rsnd_io_to_mod_ssi(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 : ssi; 317 } else { 318 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 319 320 target = cmd ? cmd : ssi; 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 #define rsnd_mod_call(idx, io, func, param...) \ 350 ({ \ 351 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ 352 struct rsnd_mod *mod = (io)->mod[idx]; \ 353 struct device *dev = rsnd_priv_to_dev(priv); \ 354 u32 *status = mod->get_status(io, mod, idx); \ 355 u32 mask = 0xF << __rsnd_mod_shift_##func; \ 356 u8 val = (*status >> __rsnd_mod_shift_##func) & 0xF; \ 357 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \ 358 int ret = 0; \ 359 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \ 360 if (add == 0xF) \ 361 call = 0; \ 362 else \ 363 *status = (*status & ~mask) + \ 364 (add << __rsnd_mod_shift_##func); \ 365 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \ 366 rsnd_mod_name(mod), rsnd_mod_id(mod), \ 367 *status, call ? #func : ""); \ 368 if (call) \ 369 ret = (mod)->ops->func(mod, io, param); \ 370 if (ret) \ 371 dev_dbg(dev, "%s[%d] : rsnd_mod_call error %d\n", \ 372 rsnd_mod_name(mod), rsnd_mod_id(mod), ret); \ 373 ret; \ 374 }) 375 376 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 377 { 378 /* CAPTURE */ 379 RSND_MOD_AUDMAPP, 380 RSND_MOD_AUDMA, 381 RSND_MOD_DVC, 382 RSND_MOD_MIX, 383 RSND_MOD_CTU, 384 RSND_MOD_CMD, 385 RSND_MOD_SRC, 386 RSND_MOD_SSIU, 387 RSND_MOD_SSIM3, 388 RSND_MOD_SSIM2, 389 RSND_MOD_SSIM1, 390 RSND_MOD_SSIP, 391 RSND_MOD_SSI, 392 }, { 393 /* PLAYBACK */ 394 RSND_MOD_AUDMAPP, 395 RSND_MOD_AUDMA, 396 RSND_MOD_SSIM3, 397 RSND_MOD_SSIM2, 398 RSND_MOD_SSIM1, 399 RSND_MOD_SSIP, 400 RSND_MOD_SSI, 401 RSND_MOD_SSIU, 402 RSND_MOD_DVC, 403 RSND_MOD_MIX, 404 RSND_MOD_CTU, 405 RSND_MOD_CMD, 406 RSND_MOD_SRC, 407 }, 408 }; 409 410 #define rsnd_dai_call(fn, io, param...) \ 411 ({ \ 412 struct rsnd_mod *mod; \ 413 int type, is_play = rsnd_io_is_play(io); \ 414 int ret = 0, i; \ 415 for (i = 0; i < RSND_MOD_MAX; i++) { \ 416 type = rsnd_mod_sequence[is_play][i]; \ 417 mod = (io)->mod[type]; \ 418 if (!mod) \ 419 continue; \ 420 ret |= rsnd_mod_call(type, io, fn, param); \ 421 } \ 422 ret; \ 423 }) 424 425 int rsnd_dai_connect(struct rsnd_mod *mod, 426 struct rsnd_dai_stream *io, 427 enum rsnd_mod_type type) 428 { 429 struct rsnd_priv *priv; 430 struct device *dev; 431 432 if (!mod) 433 return -EIO; 434 435 if (io->mod[type] == mod) 436 return 0; 437 438 if (io->mod[type]) 439 return -EINVAL; 440 441 priv = rsnd_mod_to_priv(mod); 442 dev = rsnd_priv_to_dev(priv); 443 444 io->mod[type] = mod; 445 446 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 447 rsnd_mod_name(mod), rsnd_mod_id(mod), 448 rsnd_io_is_play(io) ? "Playback" : "Capture"); 449 450 return 0; 451 } 452 453 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 454 struct rsnd_dai_stream *io, 455 enum rsnd_mod_type type) 456 { 457 io->mod[type] = NULL; 458 } 459 460 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 461 { 462 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 463 return NULL; 464 465 return priv->rdai + id; 466 } 467 468 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 469 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 470 { 471 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 472 473 return rsnd_rdai_get(priv, dai->id); 474 } 475 476 /* 477 * rsnd_soc_dai functions 478 */ 479 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) 480 { 481 struct snd_pcm_substream *substream = io->substream; 482 struct snd_pcm_runtime *runtime = substream->runtime; 483 int pos = io->byte_pos + additional; 484 485 pos %= (runtime->periods * io->byte_per_period); 486 487 return pos; 488 } 489 490 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) 491 { 492 io->byte_pos += byte; 493 494 if (io->byte_pos >= io->next_period_byte) { 495 struct snd_pcm_substream *substream = io->substream; 496 struct snd_pcm_runtime *runtime = substream->runtime; 497 498 io->period_pos++; 499 io->next_period_byte += io->byte_per_period; 500 501 if (io->period_pos >= runtime->periods) { 502 io->byte_pos = 0; 503 io->period_pos = 0; 504 io->next_period_byte = io->byte_per_period; 505 } 506 507 return true; 508 } 509 510 return false; 511 } 512 513 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 514 { 515 struct snd_pcm_substream *substream = io->substream; 516 517 /* 518 * this function should be called... 519 * 520 * - if rsnd_dai_pointer_update() returns true 521 * - without spin lock 522 */ 523 524 snd_pcm_period_elapsed(substream); 525 } 526 527 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 528 struct snd_pcm_substream *substream) 529 { 530 struct snd_pcm_runtime *runtime = substream->runtime; 531 532 io->substream = substream; 533 io->byte_pos = 0; 534 io->period_pos = 0; 535 io->byte_per_period = runtime->period_size * 536 runtime->channels * 537 samples_to_bytes(runtime, 1); 538 io->next_period_byte = io->byte_per_period; 539 } 540 541 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 542 { 543 io->substream = NULL; 544 } 545 546 static 547 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 548 { 549 struct snd_soc_pcm_runtime *rtd = substream->private_data; 550 551 return rtd->cpu_dai; 552 } 553 554 static 555 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 556 struct snd_pcm_substream *substream) 557 { 558 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 559 return &rdai->playback; 560 else 561 return &rdai->capture; 562 } 563 564 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 565 struct snd_soc_dai *dai) 566 { 567 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 568 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 569 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 570 int ret; 571 unsigned long flags; 572 573 spin_lock_irqsave(&priv->lock, flags); 574 575 switch (cmd) { 576 case SNDRV_PCM_TRIGGER_START: 577 rsnd_dai_stream_init(io, substream); 578 579 ret = rsnd_dai_call(init, io, priv); 580 if (ret < 0) 581 goto dai_trigger_end; 582 583 ret = rsnd_dai_call(start, io, priv); 584 if (ret < 0) 585 goto dai_trigger_end; 586 587 ret = rsnd_dai_call(irq, io, priv, 1); 588 if (ret < 0) 589 goto dai_trigger_end; 590 591 break; 592 case SNDRV_PCM_TRIGGER_STOP: 593 ret = rsnd_dai_call(irq, io, priv, 0); 594 595 ret |= rsnd_dai_call(stop, io, priv); 596 597 ret |= rsnd_dai_call(quit, io, priv); 598 599 rsnd_dai_stream_quit(io); 600 break; 601 default: 602 ret = -EINVAL; 603 } 604 605 dai_trigger_end: 606 spin_unlock_irqrestore(&priv->lock, flags); 607 608 return ret; 609 } 610 611 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 612 { 613 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 614 615 /* set master/slave audio interface */ 616 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 617 case SND_SOC_DAIFMT_CBM_CFM: 618 rdai->clk_master = 0; 619 break; 620 case SND_SOC_DAIFMT_CBS_CFS: 621 rdai->clk_master = 1; /* codec is slave, cpu is master */ 622 break; 623 default: 624 return -EINVAL; 625 } 626 627 /* set format */ 628 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 629 case SND_SOC_DAIFMT_I2S: 630 rdai->sys_delay = 0; 631 rdai->data_alignment = 0; 632 rdai->frm_clk_inv = 0; 633 break; 634 case SND_SOC_DAIFMT_LEFT_J: 635 rdai->sys_delay = 1; 636 rdai->data_alignment = 0; 637 rdai->frm_clk_inv = 1; 638 break; 639 case SND_SOC_DAIFMT_RIGHT_J: 640 rdai->sys_delay = 1; 641 rdai->data_alignment = 1; 642 rdai->frm_clk_inv = 1; 643 break; 644 } 645 646 /* set clock inversion */ 647 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 648 case SND_SOC_DAIFMT_NB_IF: 649 rdai->bit_clk_inv = rdai->bit_clk_inv; 650 rdai->frm_clk_inv = !rdai->frm_clk_inv; 651 break; 652 case SND_SOC_DAIFMT_IB_NF: 653 rdai->bit_clk_inv = !rdai->bit_clk_inv; 654 rdai->frm_clk_inv = rdai->frm_clk_inv; 655 break; 656 case SND_SOC_DAIFMT_IB_IF: 657 rdai->bit_clk_inv = !rdai->bit_clk_inv; 658 rdai->frm_clk_inv = !rdai->frm_clk_inv; 659 break; 660 case SND_SOC_DAIFMT_NB_NF: 661 default: 662 break; 663 } 664 665 return 0; 666 } 667 668 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 669 u32 tx_mask, u32 rx_mask, 670 int slots, int slot_width) 671 { 672 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 673 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 674 struct device *dev = rsnd_priv_to_dev(priv); 675 676 switch (slots) { 677 case 6: 678 /* TDM Extend Mode */ 679 rsnd_set_slot(rdai, slots, 1); 680 break; 681 default: 682 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 683 return -EINVAL; 684 } 685 686 return 0; 687 } 688 689 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 690 .trigger = rsnd_soc_dai_trigger, 691 .set_fmt = rsnd_soc_dai_set_fmt, 692 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 693 }; 694 695 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 696 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 697 struct device_node *node, 698 struct device_node *playback, 699 struct device_node *capture) 700 { 701 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 702 struct device_node *np; 703 struct rsnd_mod *mod; 704 int i; 705 706 if (!node) 707 return; 708 709 i = 0; 710 for_each_child_of_node(node, np) { 711 mod = mod_get(priv, i); 712 if (np == playback) 713 rsnd_dai_connect(mod, &rdai->playback, mod->type); 714 if (np == capture) 715 rsnd_dai_connect(mod, &rdai->capture, mod->type); 716 i++; 717 } 718 719 of_node_put(node); 720 } 721 722 static int rsnd_dai_probe(struct rsnd_priv *priv) 723 { 724 struct device_node *dai_node; 725 struct device_node *dai_np; 726 struct device_node *playback, *capture; 727 struct rsnd_dai_stream *io_playback; 728 struct rsnd_dai_stream *io_capture; 729 struct snd_soc_dai_driver *rdrv, *drv; 730 struct rsnd_dai *rdai; 731 struct device *dev = rsnd_priv_to_dev(priv); 732 int nr, dai_i, io_i; 733 int ret; 734 735 dai_node = rsnd_dai_of_node(priv); 736 nr = of_get_child_count(dai_node); 737 if (!nr) { 738 ret = -EINVAL; 739 goto rsnd_dai_probe_done; 740 } 741 742 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL); 743 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL); 744 if (!rdrv || !rdai) { 745 ret = -ENOMEM; 746 goto rsnd_dai_probe_done; 747 } 748 749 priv->rdai_nr = nr; 750 priv->daidrv = rdrv; 751 priv->rdai = rdai; 752 753 /* 754 * parse all dai 755 */ 756 dai_i = 0; 757 for_each_child_of_node(dai_node, dai_np) { 758 rdai = rsnd_rdai_get(priv, dai_i); 759 drv = rdrv + dai_i; 760 io_playback = &rdai->playback; 761 io_capture = &rdai->capture; 762 763 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 764 765 rdai->priv = priv; 766 drv->name = rdai->name; 767 drv->ops = &rsnd_soc_dai_ops; 768 769 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE, 770 "DAI%d Playback", dai_i); 771 drv->playback.rates = RSND_RATES; 772 drv->playback.formats = RSND_FMTS; 773 drv->playback.channels_min = 2; 774 drv->playback.channels_max = 6; 775 drv->playback.stream_name = rdai->playback.name; 776 777 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, 778 "DAI%d Capture", dai_i); 779 drv->capture.rates = RSND_RATES; 780 drv->capture.formats = RSND_FMTS; 781 drv->capture.channels_min = 2; 782 drv->capture.channels_max = 6; 783 drv->capture.stream_name = rdai->capture.name; 784 785 rdai->playback.rdai = rdai; 786 rdai->capture.rdai = rdai; 787 rsnd_set_slot(rdai, 2, 1); /* default */ 788 789 for (io_i = 0;; io_i++) { 790 playback = of_parse_phandle(dai_np, "playback", io_i); 791 capture = of_parse_phandle(dai_np, "capture", io_i); 792 793 if (!playback && !capture) 794 break; 795 796 rsnd_parse_connect_ssi(rdai, playback, capture); 797 rsnd_parse_connect_src(rdai, playback, capture); 798 rsnd_parse_connect_ctu(rdai, playback, capture); 799 rsnd_parse_connect_mix(rdai, playback, capture); 800 rsnd_parse_connect_dvc(rdai, playback, capture); 801 802 of_node_put(playback); 803 of_node_put(capture); 804 } 805 806 dai_i++; 807 808 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 809 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 810 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 811 } 812 813 ret = 0; 814 815 rsnd_dai_probe_done: 816 of_node_put(dai_node); 817 818 return ret; 819 } 820 821 /* 822 * pcm ops 823 */ 824 static struct snd_pcm_hardware rsnd_pcm_hardware = { 825 .info = SNDRV_PCM_INFO_INTERLEAVED | 826 SNDRV_PCM_INFO_MMAP | 827 SNDRV_PCM_INFO_MMAP_VALID, 828 .buffer_bytes_max = 64 * 1024, 829 .period_bytes_min = 32, 830 .period_bytes_max = 8192, 831 .periods_min = 1, 832 .periods_max = 32, 833 .fifo_size = 256, 834 }; 835 836 static int rsnd_pcm_open(struct snd_pcm_substream *substream) 837 { 838 struct snd_pcm_runtime *runtime = substream->runtime; 839 int ret = 0; 840 841 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 842 843 ret = snd_pcm_hw_constraint_integer(runtime, 844 SNDRV_PCM_HW_PARAM_PERIODS); 845 846 return ret; 847 } 848 849 static int rsnd_hw_params(struct snd_pcm_substream *substream, 850 struct snd_pcm_hw_params *hw_params) 851 { 852 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 853 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 854 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 855 int ret; 856 857 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 858 if (ret) 859 return ret; 860 861 return snd_pcm_lib_malloc_pages(substream, 862 params_buffer_bytes(hw_params)); 863 } 864 865 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 866 { 867 struct snd_pcm_runtime *runtime = substream->runtime; 868 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 869 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 870 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 871 872 return bytes_to_frames(runtime, io->byte_pos); 873 } 874 875 static struct snd_pcm_ops rsnd_pcm_ops = { 876 .open = rsnd_pcm_open, 877 .ioctl = snd_pcm_lib_ioctl, 878 .hw_params = rsnd_hw_params, 879 .hw_free = snd_pcm_lib_free_pages, 880 .pointer = rsnd_pointer, 881 }; 882 883 /* 884 * snd_kcontrol 885 */ 886 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) 887 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 888 struct snd_ctl_elem_info *uinfo) 889 { 890 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 891 892 if (cfg->texts) { 893 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 894 uinfo->count = cfg->size; 895 uinfo->value.enumerated.items = cfg->max; 896 if (uinfo->value.enumerated.item >= cfg->max) 897 uinfo->value.enumerated.item = cfg->max - 1; 898 strlcpy(uinfo->value.enumerated.name, 899 cfg->texts[uinfo->value.enumerated.item], 900 sizeof(uinfo->value.enumerated.name)); 901 } else { 902 uinfo->count = cfg->size; 903 uinfo->value.integer.min = 0; 904 uinfo->value.integer.max = cfg->max; 905 uinfo->type = (cfg->max == 1) ? 906 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 907 SNDRV_CTL_ELEM_TYPE_INTEGER; 908 } 909 910 return 0; 911 } 912 913 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 914 struct snd_ctl_elem_value *uc) 915 { 916 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 917 int i; 918 919 for (i = 0; i < cfg->size; i++) 920 if (cfg->texts) 921 uc->value.enumerated.item[i] = cfg->val[i]; 922 else 923 uc->value.integer.value[i] = cfg->val[i]; 924 925 return 0; 926 } 927 928 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 929 struct snd_ctl_elem_value *uc) 930 { 931 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); 932 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 933 int i, change = 0; 934 935 for (i = 0; i < cfg->size; i++) { 936 if (cfg->texts) { 937 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 938 cfg->val[i] = uc->value.enumerated.item[i]; 939 } else { 940 change |= (uc->value.integer.value[i] != cfg->val[i]); 941 cfg->val[i] = uc->value.integer.value[i]; 942 } 943 } 944 945 if (change && cfg->update) 946 cfg->update(cfg->io, mod); 947 948 return change; 949 } 950 951 static int __rsnd_kctrl_new(struct rsnd_mod *mod, 952 struct rsnd_dai_stream *io, 953 struct snd_soc_pcm_runtime *rtd, 954 const unsigned char *name, 955 struct rsnd_kctrl_cfg *cfg, 956 void (*update)(struct rsnd_dai_stream *io, 957 struct rsnd_mod *mod)) 958 { 959 struct snd_card *card = rtd->card->snd_card; 960 struct snd_kcontrol *kctrl; 961 struct snd_kcontrol_new knew = { 962 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 963 .name = name, 964 .info = rsnd_kctrl_info, 965 .index = rtd->num, 966 .get = rsnd_kctrl_get, 967 .put = rsnd_kctrl_put, 968 .private_value = (unsigned long)cfg, 969 }; 970 int ret; 971 972 kctrl = snd_ctl_new1(&knew, mod); 973 if (!kctrl) 974 return -ENOMEM; 975 976 ret = snd_ctl_add(card, kctrl); 977 if (ret < 0) { 978 snd_ctl_free_one(kctrl); 979 return ret; 980 } 981 982 cfg->update = update; 983 cfg->card = card; 984 cfg->kctrl = kctrl; 985 cfg->io = io; 986 987 return 0; 988 } 989 990 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg) 991 { 992 snd_ctl_remove(cfg->card, cfg->kctrl); 993 } 994 995 int rsnd_kctrl_new_m(struct rsnd_mod *mod, 996 struct rsnd_dai_stream *io, 997 struct snd_soc_pcm_runtime *rtd, 998 const unsigned char *name, 999 void (*update)(struct rsnd_dai_stream *io, 1000 struct rsnd_mod *mod), 1001 struct rsnd_kctrl_cfg_m *_cfg, 1002 int ch_size, 1003 u32 max) 1004 { 1005 if (ch_size > RSND_MAX_CHANNELS) 1006 return -EINVAL; 1007 1008 _cfg->cfg.max = max; 1009 _cfg->cfg.size = ch_size; 1010 _cfg->cfg.val = _cfg->val; 1011 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1012 } 1013 1014 int rsnd_kctrl_new_s(struct rsnd_mod *mod, 1015 struct rsnd_dai_stream *io, 1016 struct snd_soc_pcm_runtime *rtd, 1017 const unsigned char *name, 1018 void (*update)(struct rsnd_dai_stream *io, 1019 struct rsnd_mod *mod), 1020 struct rsnd_kctrl_cfg_s *_cfg, 1021 u32 max) 1022 { 1023 _cfg->cfg.max = max; 1024 _cfg->cfg.size = 1; 1025 _cfg->cfg.val = &_cfg->val; 1026 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1027 } 1028 1029 int rsnd_kctrl_new_e(struct rsnd_mod *mod, 1030 struct rsnd_dai_stream *io, 1031 struct snd_soc_pcm_runtime *rtd, 1032 const unsigned char *name, 1033 struct rsnd_kctrl_cfg_s *_cfg, 1034 void (*update)(struct rsnd_dai_stream *io, 1035 struct rsnd_mod *mod), 1036 const char * const *texts, 1037 u32 max) 1038 { 1039 _cfg->cfg.max = max; 1040 _cfg->cfg.size = 1; 1041 _cfg->cfg.val = &_cfg->val; 1042 _cfg->cfg.texts = texts; 1043 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1044 } 1045 1046 /* 1047 * snd_soc_platform 1048 */ 1049 1050 #define PREALLOC_BUFFER (32 * 1024) 1051 #define PREALLOC_BUFFER_MAX (32 * 1024) 1052 1053 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1054 { 1055 struct snd_soc_dai *dai = rtd->cpu_dai; 1056 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1057 int ret; 1058 1059 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1060 if (ret) 1061 return ret; 1062 1063 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1064 if (ret) 1065 return ret; 1066 1067 return snd_pcm_lib_preallocate_pages_for_all( 1068 rtd->pcm, 1069 SNDRV_DMA_TYPE_DEV, 1070 rtd->card->snd_card->dev, 1071 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1072 } 1073 1074 static struct snd_soc_platform_driver rsnd_soc_platform = { 1075 .ops = &rsnd_pcm_ops, 1076 .pcm_new = rsnd_pcm_new, 1077 }; 1078 1079 static const struct snd_soc_component_driver rsnd_soc_component = { 1080 .name = "rsnd", 1081 }; 1082 1083 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1084 struct rsnd_dai_stream *io) 1085 { 1086 int ret; 1087 1088 ret = rsnd_dai_call(probe, io, priv); 1089 if (ret == -EAGAIN) { 1090 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1091 int i; 1092 1093 /* 1094 * Fallback to PIO mode 1095 */ 1096 1097 /* 1098 * call "remove" for SSI/SRC/DVC 1099 * SSI will be switch to PIO mode if it was DMA mode 1100 * see 1101 * rsnd_dma_init() 1102 * rsnd_ssi_fallback() 1103 */ 1104 rsnd_dai_call(remove, io, priv); 1105 1106 /* 1107 * remove all mod from io 1108 * and, re connect ssi 1109 */ 1110 for (i = 0; i < RSND_MOD_MAX; i++) 1111 rsnd_dai_disconnect((io)->mod[i], io, i); 1112 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1113 1114 /* 1115 * fallback 1116 */ 1117 rsnd_dai_call(fallback, io, priv); 1118 1119 /* 1120 * retry to "probe". 1121 * DAI has SSI which is PIO mode only now. 1122 */ 1123 ret = rsnd_dai_call(probe, io, priv); 1124 } 1125 1126 return ret; 1127 } 1128 1129 /* 1130 * rsnd probe 1131 */ 1132 static int rsnd_probe(struct platform_device *pdev) 1133 { 1134 struct rsnd_priv *priv; 1135 struct device *dev = &pdev->dev; 1136 struct rsnd_dai *rdai; 1137 int (*probe_func[])(struct rsnd_priv *priv) = { 1138 rsnd_gen_probe, 1139 rsnd_dma_probe, 1140 rsnd_ssi_probe, 1141 rsnd_ssiu_probe, 1142 rsnd_src_probe, 1143 rsnd_ctu_probe, 1144 rsnd_mix_probe, 1145 rsnd_dvc_probe, 1146 rsnd_cmd_probe, 1147 rsnd_adg_probe, 1148 rsnd_dai_probe, 1149 }; 1150 int ret, i; 1151 1152 /* 1153 * init priv data 1154 */ 1155 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1156 if (!priv) { 1157 dev_err(dev, "priv allocate failed\n"); 1158 return -ENODEV; 1159 } 1160 1161 priv->pdev = pdev; 1162 priv->flags = (unsigned long)of_device_get_match_data(dev); 1163 spin_lock_init(&priv->lock); 1164 1165 /* 1166 * init each module 1167 */ 1168 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1169 ret = probe_func[i](priv); 1170 if (ret) 1171 return ret; 1172 } 1173 1174 for_each_rsnd_dai(rdai, priv, i) { 1175 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1176 if (ret) 1177 goto exit_snd_probe; 1178 1179 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1180 if (ret) 1181 goto exit_snd_probe; 1182 } 1183 1184 dev_set_drvdata(dev, priv); 1185 1186 /* 1187 * asoc register 1188 */ 1189 ret = snd_soc_register_platform(dev, &rsnd_soc_platform); 1190 if (ret < 0) { 1191 dev_err(dev, "cannot snd soc register\n"); 1192 return ret; 1193 } 1194 1195 ret = snd_soc_register_component(dev, &rsnd_soc_component, 1196 priv->daidrv, rsnd_rdai_nr(priv)); 1197 if (ret < 0) { 1198 dev_err(dev, "cannot snd dai register\n"); 1199 goto exit_snd_soc; 1200 } 1201 1202 pm_runtime_enable(dev); 1203 1204 dev_info(dev, "probed\n"); 1205 return ret; 1206 1207 exit_snd_soc: 1208 snd_soc_unregister_platform(dev); 1209 exit_snd_probe: 1210 for_each_rsnd_dai(rdai, priv, i) { 1211 rsnd_dai_call(remove, &rdai->playback, priv); 1212 rsnd_dai_call(remove, &rdai->capture, priv); 1213 } 1214 1215 return ret; 1216 } 1217 1218 static int rsnd_remove(struct platform_device *pdev) 1219 { 1220 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1221 struct rsnd_dai *rdai; 1222 void (*remove_func[])(struct rsnd_priv *priv) = { 1223 rsnd_ssi_remove, 1224 rsnd_ssiu_remove, 1225 rsnd_src_remove, 1226 rsnd_ctu_remove, 1227 rsnd_mix_remove, 1228 rsnd_dvc_remove, 1229 rsnd_cmd_remove, 1230 rsnd_adg_remove, 1231 }; 1232 int ret = 0, i; 1233 1234 pm_runtime_disable(&pdev->dev); 1235 1236 for_each_rsnd_dai(rdai, priv, i) { 1237 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1238 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1239 } 1240 1241 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1242 remove_func[i](priv); 1243 1244 snd_soc_unregister_component(&pdev->dev); 1245 snd_soc_unregister_platform(&pdev->dev); 1246 1247 return ret; 1248 } 1249 1250 static struct platform_driver rsnd_driver = { 1251 .driver = { 1252 .name = "rcar_sound", 1253 .of_match_table = rsnd_of_match, 1254 }, 1255 .probe = rsnd_probe, 1256 .remove = rsnd_remove, 1257 }; 1258 module_platform_driver(rsnd_driver); 1259 1260 MODULE_LICENSE("GPL"); 1261 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1262 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1263 MODULE_ALIAS("platform:rcar-pcm-audio"); 1264