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 *ssi = rsnd_io_to_mod_ssi(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 : ssi; 319 } else { 320 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 321 322 target = cmd ? cmd : ssi; 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 #define rsnd_mod_call(idx, io, func, param...) \ 352 ({ \ 353 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ 354 struct rsnd_mod *mod = (io)->mod[idx]; \ 355 struct device *dev = rsnd_priv_to_dev(priv); \ 356 u32 *status = mod->get_status(io, mod, idx); \ 357 u32 mask = 0xF << __rsnd_mod_shift_##func; \ 358 u8 val = (*status >> __rsnd_mod_shift_##func) & 0xF; \ 359 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \ 360 int ret = 0; \ 361 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \ 362 if (add == 0xF) \ 363 call = 0; \ 364 else \ 365 *status = (*status & ~mask) + \ 366 (add << __rsnd_mod_shift_##func); \ 367 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \ 368 rsnd_mod_name(mod), rsnd_mod_id(mod), \ 369 *status, call ? #func : ""); \ 370 if (call) \ 371 ret = (mod)->ops->func(mod, io, param); \ 372 if (ret) \ 373 dev_dbg(dev, "%s[%d] : rsnd_mod_call error %d\n", \ 374 rsnd_mod_name(mod), rsnd_mod_id(mod), ret); \ 375 ret; \ 376 }) 377 378 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 379 { 380 /* CAPTURE */ 381 RSND_MOD_AUDMAPP, 382 RSND_MOD_AUDMA, 383 RSND_MOD_DVC, 384 RSND_MOD_MIX, 385 RSND_MOD_CTU, 386 RSND_MOD_CMD, 387 RSND_MOD_SRC, 388 RSND_MOD_SSIU, 389 RSND_MOD_SSIM3, 390 RSND_MOD_SSIM2, 391 RSND_MOD_SSIM1, 392 RSND_MOD_SSIP, 393 RSND_MOD_SSI, 394 }, { 395 /* PLAYBACK */ 396 RSND_MOD_AUDMAPP, 397 RSND_MOD_AUDMA, 398 RSND_MOD_SSIM3, 399 RSND_MOD_SSIM2, 400 RSND_MOD_SSIM1, 401 RSND_MOD_SSIP, 402 RSND_MOD_SSI, 403 RSND_MOD_SSIU, 404 RSND_MOD_DVC, 405 RSND_MOD_MIX, 406 RSND_MOD_CTU, 407 RSND_MOD_CMD, 408 RSND_MOD_SRC, 409 }, 410 }; 411 412 #define rsnd_dai_call(fn, io, param...) \ 413 ({ \ 414 struct rsnd_mod *mod; \ 415 int type, is_play = rsnd_io_is_play(io); \ 416 int ret = 0, i; \ 417 for (i = 0; i < RSND_MOD_MAX; i++) { \ 418 type = rsnd_mod_sequence[is_play][i]; \ 419 mod = (io)->mod[type]; \ 420 if (!mod) \ 421 continue; \ 422 ret |= rsnd_mod_call(type, io, fn, param); \ 423 } \ 424 ret; \ 425 }) 426 427 int rsnd_dai_connect(struct rsnd_mod *mod, 428 struct rsnd_dai_stream *io, 429 enum rsnd_mod_type type) 430 { 431 struct rsnd_priv *priv; 432 struct device *dev; 433 434 if (!mod) 435 return -EIO; 436 437 if (io->mod[type] == mod) 438 return 0; 439 440 if (io->mod[type]) 441 return -EINVAL; 442 443 priv = rsnd_mod_to_priv(mod); 444 dev = rsnd_priv_to_dev(priv); 445 446 io->mod[type] = mod; 447 448 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 449 rsnd_mod_name(mod), rsnd_mod_id(mod), 450 rsnd_io_is_play(io) ? "Playback" : "Capture"); 451 452 return 0; 453 } 454 455 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 456 struct rsnd_dai_stream *io, 457 enum rsnd_mod_type type) 458 { 459 io->mod[type] = NULL; 460 } 461 462 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 463 { 464 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 465 return NULL; 466 467 return priv->rdai + id; 468 } 469 470 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 471 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 472 { 473 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 474 475 return rsnd_rdai_get(priv, dai->id); 476 } 477 478 /* 479 * rsnd_soc_dai functions 480 */ 481 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) 482 { 483 struct snd_pcm_substream *substream = io->substream; 484 struct snd_pcm_runtime *runtime = substream->runtime; 485 int pos = io->byte_pos + additional; 486 487 pos %= (runtime->periods * io->byte_per_period); 488 489 return pos; 490 } 491 492 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) 493 { 494 io->byte_pos += byte; 495 496 if (io->byte_pos >= io->next_period_byte) { 497 struct snd_pcm_substream *substream = io->substream; 498 struct snd_pcm_runtime *runtime = substream->runtime; 499 500 io->period_pos++; 501 io->next_period_byte += io->byte_per_period; 502 503 if (io->period_pos >= runtime->periods) { 504 io->byte_pos = 0; 505 io->period_pos = 0; 506 io->next_period_byte = io->byte_per_period; 507 } 508 509 return true; 510 } 511 512 return false; 513 } 514 515 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 516 { 517 struct snd_pcm_substream *substream = io->substream; 518 519 /* 520 * this function should be called... 521 * 522 * - if rsnd_dai_pointer_update() returns true 523 * - without spin lock 524 */ 525 526 snd_pcm_period_elapsed(substream); 527 } 528 529 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 530 struct snd_pcm_substream *substream) 531 { 532 struct snd_pcm_runtime *runtime = substream->runtime; 533 534 io->substream = substream; 535 io->byte_pos = 0; 536 io->period_pos = 0; 537 io->byte_per_period = runtime->period_size * 538 runtime->channels * 539 samples_to_bytes(runtime, 1); 540 io->next_period_byte = io->byte_per_period; 541 } 542 543 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 544 { 545 io->substream = NULL; 546 } 547 548 static 549 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 550 { 551 struct snd_soc_pcm_runtime *rtd = substream->private_data; 552 553 return rtd->cpu_dai; 554 } 555 556 static 557 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 558 struct snd_pcm_substream *substream) 559 { 560 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 561 return &rdai->playback; 562 else 563 return &rdai->capture; 564 } 565 566 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 567 struct snd_soc_dai *dai) 568 { 569 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 570 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 571 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 572 int ret; 573 unsigned long flags; 574 575 spin_lock_irqsave(&priv->lock, flags); 576 577 switch (cmd) { 578 case SNDRV_PCM_TRIGGER_START: 579 case SNDRV_PCM_TRIGGER_RESUME: 580 rsnd_dai_stream_init(io, substream); 581 582 ret = rsnd_dai_call(init, io, priv); 583 if (ret < 0) 584 goto dai_trigger_end; 585 586 ret = rsnd_dai_call(start, io, priv); 587 if (ret < 0) 588 goto dai_trigger_end; 589 590 ret = rsnd_dai_call(irq, io, priv, 1); 591 if (ret < 0) 592 goto dai_trigger_end; 593 594 break; 595 case SNDRV_PCM_TRIGGER_STOP: 596 case SNDRV_PCM_TRIGGER_SUSPEND: 597 ret = rsnd_dai_call(irq, io, priv, 0); 598 599 ret |= rsnd_dai_call(stop, io, priv); 600 601 ret |= rsnd_dai_call(quit, io, priv); 602 603 rsnd_dai_stream_quit(io); 604 break; 605 default: 606 ret = -EINVAL; 607 } 608 609 dai_trigger_end: 610 spin_unlock_irqrestore(&priv->lock, flags); 611 612 return ret; 613 } 614 615 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 616 { 617 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 618 619 /* set master/slave audio interface */ 620 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 621 case SND_SOC_DAIFMT_CBM_CFM: 622 rdai->clk_master = 0; 623 break; 624 case SND_SOC_DAIFMT_CBS_CFS: 625 rdai->clk_master = 1; /* codec is slave, cpu is master */ 626 break; 627 default: 628 return -EINVAL; 629 } 630 631 /* set format */ 632 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 633 case SND_SOC_DAIFMT_I2S: 634 rdai->sys_delay = 0; 635 rdai->data_alignment = 0; 636 rdai->frm_clk_inv = 0; 637 break; 638 case SND_SOC_DAIFMT_LEFT_J: 639 rdai->sys_delay = 1; 640 rdai->data_alignment = 0; 641 rdai->frm_clk_inv = 1; 642 break; 643 case SND_SOC_DAIFMT_RIGHT_J: 644 rdai->sys_delay = 1; 645 rdai->data_alignment = 1; 646 rdai->frm_clk_inv = 1; 647 break; 648 } 649 650 /* set clock inversion */ 651 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 652 case SND_SOC_DAIFMT_NB_IF: 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_NF: 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_IB_IF: 661 rdai->bit_clk_inv = !rdai->bit_clk_inv; 662 rdai->frm_clk_inv = !rdai->frm_clk_inv; 663 break; 664 case SND_SOC_DAIFMT_NB_NF: 665 default: 666 break; 667 } 668 669 return 0; 670 } 671 672 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 673 u32 tx_mask, u32 rx_mask, 674 int slots, int slot_width) 675 { 676 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 677 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 678 struct device *dev = rsnd_priv_to_dev(priv); 679 680 switch (slots) { 681 case 6: 682 /* TDM Extend Mode */ 683 rsnd_set_slot(rdai, slots, 1); 684 break; 685 default: 686 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 687 return -EINVAL; 688 } 689 690 return 0; 691 } 692 693 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 694 .trigger = rsnd_soc_dai_trigger, 695 .set_fmt = rsnd_soc_dai_set_fmt, 696 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 697 }; 698 699 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 700 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 701 struct device_node *node, 702 struct device_node *playback, 703 struct device_node *capture) 704 { 705 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 706 struct device_node *np; 707 struct rsnd_mod *mod; 708 int i; 709 710 if (!node) 711 return; 712 713 i = 0; 714 for_each_child_of_node(node, np) { 715 mod = mod_get(priv, i); 716 if (np == playback) 717 rsnd_dai_connect(mod, &rdai->playback, mod->type); 718 if (np == capture) 719 rsnd_dai_connect(mod, &rdai->capture, mod->type); 720 i++; 721 } 722 723 of_node_put(node); 724 } 725 726 static int rsnd_dai_probe(struct rsnd_priv *priv) 727 { 728 struct device_node *dai_node; 729 struct device_node *dai_np; 730 struct device_node *playback, *capture; 731 struct rsnd_dai_stream *io_playback; 732 struct rsnd_dai_stream *io_capture; 733 struct snd_soc_dai_driver *rdrv, *drv; 734 struct rsnd_dai *rdai; 735 struct device *dev = rsnd_priv_to_dev(priv); 736 int nr, dai_i, io_i; 737 int ret; 738 739 dai_node = rsnd_dai_of_node(priv); 740 nr = of_get_child_count(dai_node); 741 if (!nr) { 742 ret = -EINVAL; 743 goto rsnd_dai_probe_done; 744 } 745 746 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL); 747 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL); 748 if (!rdrv || !rdai) { 749 ret = -ENOMEM; 750 goto rsnd_dai_probe_done; 751 } 752 753 priv->rdai_nr = nr; 754 priv->daidrv = rdrv; 755 priv->rdai = rdai; 756 757 /* 758 * parse all dai 759 */ 760 dai_i = 0; 761 for_each_child_of_node(dai_node, dai_np) { 762 rdai = rsnd_rdai_get(priv, dai_i); 763 drv = rdrv + dai_i; 764 io_playback = &rdai->playback; 765 io_capture = &rdai->capture; 766 767 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 768 769 rdai->priv = priv; 770 drv->name = rdai->name; 771 drv->ops = &rsnd_soc_dai_ops; 772 773 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE, 774 "DAI%d Playback", dai_i); 775 drv->playback.rates = RSND_RATES; 776 drv->playback.formats = RSND_FMTS; 777 drv->playback.channels_min = 2; 778 drv->playback.channels_max = 6; 779 drv->playback.stream_name = rdai->playback.name; 780 781 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, 782 "DAI%d Capture", dai_i); 783 drv->capture.rates = RSND_RATES; 784 drv->capture.formats = RSND_FMTS; 785 drv->capture.channels_min = 2; 786 drv->capture.channels_max = 6; 787 drv->capture.stream_name = rdai->capture.name; 788 789 rdai->playback.rdai = rdai; 790 rdai->capture.rdai = rdai; 791 rsnd_set_slot(rdai, 2, 1); /* default */ 792 793 for (io_i = 0;; io_i++) { 794 playback = of_parse_phandle(dai_np, "playback", io_i); 795 capture = of_parse_phandle(dai_np, "capture", io_i); 796 797 if (!playback && !capture) 798 break; 799 800 rsnd_parse_connect_ssi(rdai, playback, capture); 801 rsnd_parse_connect_src(rdai, playback, capture); 802 rsnd_parse_connect_ctu(rdai, playback, capture); 803 rsnd_parse_connect_mix(rdai, playback, capture); 804 rsnd_parse_connect_dvc(rdai, playback, capture); 805 806 of_node_put(playback); 807 of_node_put(capture); 808 } 809 810 dai_i++; 811 812 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 813 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 814 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 815 } 816 817 ret = 0; 818 819 rsnd_dai_probe_done: 820 of_node_put(dai_node); 821 822 return ret; 823 } 824 825 /* 826 * pcm ops 827 */ 828 static struct snd_pcm_hardware rsnd_pcm_hardware = { 829 .info = SNDRV_PCM_INFO_INTERLEAVED | 830 SNDRV_PCM_INFO_MMAP | 831 SNDRV_PCM_INFO_MMAP_VALID, 832 .buffer_bytes_max = 64 * 1024, 833 .period_bytes_min = 32, 834 .period_bytes_max = 8192, 835 .periods_min = 1, 836 .periods_max = 32, 837 .fifo_size = 256, 838 }; 839 840 static int rsnd_pcm_open(struct snd_pcm_substream *substream) 841 { 842 struct snd_pcm_runtime *runtime = substream->runtime; 843 int ret = 0; 844 845 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 846 847 ret = snd_pcm_hw_constraint_integer(runtime, 848 SNDRV_PCM_HW_PARAM_PERIODS); 849 850 return ret; 851 } 852 853 static int rsnd_hw_params(struct snd_pcm_substream *substream, 854 struct snd_pcm_hw_params *hw_params) 855 { 856 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 857 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 858 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 859 int ret; 860 861 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 862 if (ret) 863 return ret; 864 865 return snd_pcm_lib_malloc_pages(substream, 866 params_buffer_bytes(hw_params)); 867 } 868 869 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 870 { 871 struct snd_pcm_runtime *runtime = substream->runtime; 872 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 873 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 874 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 875 876 return bytes_to_frames(runtime, io->byte_pos); 877 } 878 879 static struct snd_pcm_ops rsnd_pcm_ops = { 880 .open = rsnd_pcm_open, 881 .ioctl = snd_pcm_lib_ioctl, 882 .hw_params = rsnd_hw_params, 883 .hw_free = snd_pcm_lib_free_pages, 884 .pointer = rsnd_pointer, 885 }; 886 887 /* 888 * snd_kcontrol 889 */ 890 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value) 891 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 892 struct snd_ctl_elem_info *uinfo) 893 { 894 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 895 896 if (cfg->texts) { 897 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 898 uinfo->count = cfg->size; 899 uinfo->value.enumerated.items = cfg->max; 900 if (uinfo->value.enumerated.item >= cfg->max) 901 uinfo->value.enumerated.item = cfg->max - 1; 902 strlcpy(uinfo->value.enumerated.name, 903 cfg->texts[uinfo->value.enumerated.item], 904 sizeof(uinfo->value.enumerated.name)); 905 } else { 906 uinfo->count = cfg->size; 907 uinfo->value.integer.min = 0; 908 uinfo->value.integer.max = cfg->max; 909 uinfo->type = (cfg->max == 1) ? 910 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 911 SNDRV_CTL_ELEM_TYPE_INTEGER; 912 } 913 914 return 0; 915 } 916 917 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 918 struct snd_ctl_elem_value *uc) 919 { 920 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 921 int i; 922 923 for (i = 0; i < cfg->size; i++) 924 if (cfg->texts) 925 uc->value.enumerated.item[i] = cfg->val[i]; 926 else 927 uc->value.integer.value[i] = cfg->val[i]; 928 929 return 0; 930 } 931 932 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 933 struct snd_ctl_elem_value *uc) 934 { 935 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl); 936 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl); 937 int i, change = 0; 938 939 for (i = 0; i < cfg->size; i++) { 940 if (cfg->texts) { 941 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 942 cfg->val[i] = uc->value.enumerated.item[i]; 943 } else { 944 change |= (uc->value.integer.value[i] != cfg->val[i]); 945 cfg->val[i] = uc->value.integer.value[i]; 946 } 947 } 948 949 if (change && cfg->update) 950 cfg->update(cfg->io, mod); 951 952 return change; 953 } 954 955 static int __rsnd_kctrl_new(struct rsnd_mod *mod, 956 struct rsnd_dai_stream *io, 957 struct snd_soc_pcm_runtime *rtd, 958 const unsigned char *name, 959 struct rsnd_kctrl_cfg *cfg, 960 void (*update)(struct rsnd_dai_stream *io, 961 struct rsnd_mod *mod)) 962 { 963 struct snd_card *card = rtd->card->snd_card; 964 struct snd_kcontrol *kctrl; 965 struct snd_kcontrol_new knew = { 966 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 967 .name = name, 968 .info = rsnd_kctrl_info, 969 .index = rtd->num, 970 .get = rsnd_kctrl_get, 971 .put = rsnd_kctrl_put, 972 .private_value = (unsigned long)cfg, 973 }; 974 int ret; 975 976 kctrl = snd_ctl_new1(&knew, mod); 977 if (!kctrl) 978 return -ENOMEM; 979 980 ret = snd_ctl_add(card, kctrl); 981 if (ret < 0) { 982 snd_ctl_free_one(kctrl); 983 return ret; 984 } 985 986 cfg->update = update; 987 cfg->card = card; 988 cfg->kctrl = kctrl; 989 cfg->io = io; 990 991 return 0; 992 } 993 994 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg) 995 { 996 snd_ctl_remove(cfg->card, cfg->kctrl); 997 } 998 999 int rsnd_kctrl_new_m(struct rsnd_mod *mod, 1000 struct rsnd_dai_stream *io, 1001 struct snd_soc_pcm_runtime *rtd, 1002 const unsigned char *name, 1003 void (*update)(struct rsnd_dai_stream *io, 1004 struct rsnd_mod *mod), 1005 struct rsnd_kctrl_cfg_m *_cfg, 1006 int ch_size, 1007 u32 max) 1008 { 1009 if (ch_size > RSND_MAX_CHANNELS) 1010 return -EINVAL; 1011 1012 _cfg->cfg.max = max; 1013 _cfg->cfg.size = ch_size; 1014 _cfg->cfg.val = _cfg->val; 1015 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1016 } 1017 1018 int rsnd_kctrl_new_s(struct rsnd_mod *mod, 1019 struct rsnd_dai_stream *io, 1020 struct snd_soc_pcm_runtime *rtd, 1021 const unsigned char *name, 1022 void (*update)(struct rsnd_dai_stream *io, 1023 struct rsnd_mod *mod), 1024 struct rsnd_kctrl_cfg_s *_cfg, 1025 u32 max) 1026 { 1027 _cfg->cfg.max = max; 1028 _cfg->cfg.size = 1; 1029 _cfg->cfg.val = &_cfg->val; 1030 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1031 } 1032 1033 int rsnd_kctrl_new_e(struct rsnd_mod *mod, 1034 struct rsnd_dai_stream *io, 1035 struct snd_soc_pcm_runtime *rtd, 1036 const unsigned char *name, 1037 struct rsnd_kctrl_cfg_s *_cfg, 1038 void (*update)(struct rsnd_dai_stream *io, 1039 struct rsnd_mod *mod), 1040 const char * const *texts, 1041 u32 max) 1042 { 1043 _cfg->cfg.max = max; 1044 _cfg->cfg.size = 1; 1045 _cfg->cfg.val = &_cfg->val; 1046 _cfg->cfg.texts = texts; 1047 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update); 1048 } 1049 1050 /* 1051 * snd_soc_platform 1052 */ 1053 1054 #define PREALLOC_BUFFER (32 * 1024) 1055 #define PREALLOC_BUFFER_MAX (32 * 1024) 1056 1057 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1058 { 1059 struct snd_soc_dai *dai = rtd->cpu_dai; 1060 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1061 int ret; 1062 1063 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1064 if (ret) 1065 return ret; 1066 1067 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1068 if (ret) 1069 return ret; 1070 1071 return snd_pcm_lib_preallocate_pages_for_all( 1072 rtd->pcm, 1073 SNDRV_DMA_TYPE_DEV, 1074 rtd->card->snd_card->dev, 1075 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1076 } 1077 1078 static struct snd_soc_platform_driver rsnd_soc_platform = { 1079 .ops = &rsnd_pcm_ops, 1080 .pcm_new = rsnd_pcm_new, 1081 }; 1082 1083 static const struct snd_soc_component_driver rsnd_soc_component = { 1084 .name = "rsnd", 1085 }; 1086 1087 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1088 struct rsnd_dai_stream *io) 1089 { 1090 int ret; 1091 1092 ret = rsnd_dai_call(probe, io, priv); 1093 if (ret == -EAGAIN) { 1094 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1095 int i; 1096 1097 /* 1098 * Fallback to PIO mode 1099 */ 1100 1101 /* 1102 * call "remove" for SSI/SRC/DVC 1103 * SSI will be switch to PIO mode if it was DMA mode 1104 * see 1105 * rsnd_dma_init() 1106 * rsnd_ssi_fallback() 1107 */ 1108 rsnd_dai_call(remove, io, priv); 1109 1110 /* 1111 * remove all mod from io 1112 * and, re connect ssi 1113 */ 1114 for (i = 0; i < RSND_MOD_MAX; i++) 1115 rsnd_dai_disconnect((io)->mod[i], io, i); 1116 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1117 1118 /* 1119 * fallback 1120 */ 1121 rsnd_dai_call(fallback, io, priv); 1122 1123 /* 1124 * retry to "probe". 1125 * DAI has SSI which is PIO mode only now. 1126 */ 1127 ret = rsnd_dai_call(probe, io, priv); 1128 } 1129 1130 return ret; 1131 } 1132 1133 /* 1134 * rsnd probe 1135 */ 1136 static int rsnd_probe(struct platform_device *pdev) 1137 { 1138 struct rsnd_priv *priv; 1139 struct device *dev = &pdev->dev; 1140 struct rsnd_dai *rdai; 1141 int (*probe_func[])(struct rsnd_priv *priv) = { 1142 rsnd_gen_probe, 1143 rsnd_dma_probe, 1144 rsnd_ssi_probe, 1145 rsnd_ssiu_probe, 1146 rsnd_src_probe, 1147 rsnd_ctu_probe, 1148 rsnd_mix_probe, 1149 rsnd_dvc_probe, 1150 rsnd_cmd_probe, 1151 rsnd_adg_probe, 1152 rsnd_dai_probe, 1153 }; 1154 int ret, i; 1155 1156 /* 1157 * init priv data 1158 */ 1159 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1160 if (!priv) { 1161 dev_err(dev, "priv allocate failed\n"); 1162 return -ENODEV; 1163 } 1164 1165 priv->pdev = pdev; 1166 priv->flags = (unsigned long)of_device_get_match_data(dev); 1167 spin_lock_init(&priv->lock); 1168 1169 /* 1170 * init each module 1171 */ 1172 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1173 ret = probe_func[i](priv); 1174 if (ret) 1175 return ret; 1176 } 1177 1178 for_each_rsnd_dai(rdai, priv, i) { 1179 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1180 if (ret) 1181 goto exit_snd_probe; 1182 1183 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1184 if (ret) 1185 goto exit_snd_probe; 1186 } 1187 1188 dev_set_drvdata(dev, priv); 1189 1190 /* 1191 * asoc register 1192 */ 1193 ret = snd_soc_register_platform(dev, &rsnd_soc_platform); 1194 if (ret < 0) { 1195 dev_err(dev, "cannot snd soc register\n"); 1196 return ret; 1197 } 1198 1199 ret = snd_soc_register_component(dev, &rsnd_soc_component, 1200 priv->daidrv, rsnd_rdai_nr(priv)); 1201 if (ret < 0) { 1202 dev_err(dev, "cannot snd dai register\n"); 1203 goto exit_snd_soc; 1204 } 1205 1206 pm_runtime_enable(dev); 1207 1208 dev_info(dev, "probed\n"); 1209 return ret; 1210 1211 exit_snd_soc: 1212 snd_soc_unregister_platform(dev); 1213 exit_snd_probe: 1214 for_each_rsnd_dai(rdai, priv, i) { 1215 rsnd_dai_call(remove, &rdai->playback, priv); 1216 rsnd_dai_call(remove, &rdai->capture, priv); 1217 } 1218 1219 return ret; 1220 } 1221 1222 static int rsnd_remove(struct platform_device *pdev) 1223 { 1224 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1225 struct rsnd_dai *rdai; 1226 void (*remove_func[])(struct rsnd_priv *priv) = { 1227 rsnd_ssi_remove, 1228 rsnd_ssiu_remove, 1229 rsnd_src_remove, 1230 rsnd_ctu_remove, 1231 rsnd_mix_remove, 1232 rsnd_dvc_remove, 1233 rsnd_cmd_remove, 1234 rsnd_adg_remove, 1235 }; 1236 int ret = 0, i; 1237 1238 pm_runtime_disable(&pdev->dev); 1239 1240 for_each_rsnd_dai(rdai, priv, i) { 1241 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1242 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1243 } 1244 1245 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1246 remove_func[i](priv); 1247 1248 snd_soc_unregister_component(&pdev->dev); 1249 snd_soc_unregister_platform(&pdev->dev); 1250 1251 return ret; 1252 } 1253 1254 static struct platform_driver rsnd_driver = { 1255 .driver = { 1256 .name = "rcar_sound", 1257 .of_match_table = rsnd_of_match, 1258 }, 1259 .probe = rsnd_probe, 1260 .remove = rsnd_remove, 1261 }; 1262 module_platform_driver(rsnd_driver); 1263 1264 MODULE_LICENSE("GPL"); 1265 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1266 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1267 MODULE_ALIAS("platform:rcar-pcm-audio"); 1268