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 97 /* 98 * you can enable below define if you don't need 99 * DAI status debug message when debugging 100 * see rsnd_dbg_dai_call() 101 * 102 * #define RSND_DEBUG_NO_DAI_CALL 1 103 */ 104 105 #include <linux/pm_runtime.h> 106 #include "rsnd.h" 107 108 #define RSND_RATES SNDRV_PCM_RATE_8000_192000 109 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) 110 111 static const struct of_device_id rsnd_of_match[] = { 112 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 }, 113 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 }, 114 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 }, 115 {}, 116 }; 117 MODULE_DEVICE_TABLE(of, rsnd_of_match); 118 119 /* 120 * rsnd_mod functions 121 */ 122 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type) 123 { 124 if (mod->type != type) { 125 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 126 struct device *dev = rsnd_priv_to_dev(priv); 127 128 dev_warn(dev, "%s[%d] is not your expected module\n", 129 rsnd_mod_name(mod), rsnd_mod_id(mod)); 130 } 131 } 132 133 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io, 134 struct rsnd_mod *mod) 135 { 136 if (!mod || !mod->ops || !mod->ops->dma_req) 137 return NULL; 138 139 return mod->ops->dma_req(io, mod); 140 } 141 142 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io, 143 struct rsnd_mod *mod, 144 enum rsnd_mod_type type) 145 { 146 return &mod->status; 147 } 148 149 int rsnd_mod_init(struct rsnd_priv *priv, 150 struct rsnd_mod *mod, 151 struct rsnd_mod_ops *ops, 152 struct clk *clk, 153 u32* (*get_status)(struct rsnd_dai_stream *io, 154 struct rsnd_mod *mod, 155 enum rsnd_mod_type type), 156 enum rsnd_mod_type type, 157 int id) 158 { 159 int ret = clk_prepare(clk); 160 161 if (ret) 162 return ret; 163 164 mod->id = id; 165 mod->ops = ops; 166 mod->type = type; 167 mod->clk = clk; 168 mod->priv = priv; 169 mod->get_status = get_status; 170 171 return ret; 172 } 173 174 void rsnd_mod_quit(struct rsnd_mod *mod) 175 { 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 if (io->substream) 204 return snd_pcm_running(io->substream); 205 206 return 0; 207 } 208 209 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io, 210 struct snd_pcm_hw_params *params) 211 { 212 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 213 214 /* 215 * params will be added when refine 216 * see 217 * __rsnd_soc_hw_rule_rate() 218 * __rsnd_soc_hw_rule_channels() 219 */ 220 if (params) 221 return params_channels(params); 222 else 223 return runtime->channels; 224 } 225 226 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io, 227 struct snd_pcm_hw_params *params) 228 { 229 int chan = rsnd_runtime_channel_original_with_params(io, params); 230 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io); 231 232 if (ctu_mod) { 233 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod); 234 235 if (converted_chan) 236 return converted_chan; 237 } 238 239 return chan; 240 } 241 242 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io, 243 struct snd_pcm_hw_params *params) 244 { 245 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 246 int chan = rsnd_io_is_play(io) ? 247 rsnd_runtime_channel_after_ctu_with_params(io, params) : 248 rsnd_runtime_channel_original_with_params(io, params); 249 250 /* Use Multi SSI */ 251 if (rsnd_runtime_is_ssi_multi(io)) 252 chan /= rsnd_rdai_ssi_lane_get(rdai); 253 254 /* TDM Extend Mode needs 8ch */ 255 if (chan == 6) 256 chan = 8; 257 258 return chan; 259 } 260 261 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io) 262 { 263 struct rsnd_dai *rdai = rsnd_io_to_rdai(io); 264 int lane = rsnd_rdai_ssi_lane_get(rdai); 265 int chan = rsnd_io_is_play(io) ? 266 rsnd_runtime_channel_after_ctu(io) : 267 rsnd_runtime_channel_original(io); 268 269 return (chan > 2) && (lane > 1); 270 } 271 272 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io) 273 { 274 return rsnd_runtime_channel_for_ssi(io) >= 6; 275 } 276 277 /* 278 * ADINR function 279 */ 280 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 281 { 282 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); 283 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 284 struct device *dev = rsnd_priv_to_dev(priv); 285 286 switch (snd_pcm_format_width(runtime->format)) { 287 case 16: 288 return 8 << 16; 289 case 24: 290 return 0 << 16; 291 } 292 293 dev_warn(dev, "not supported sample bits\n"); 294 295 return 0; 296 } 297 298 /* 299 * DALIGN function 300 */ 301 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) 302 { 303 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); 304 struct rsnd_mod *target; 305 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 306 307 /* 308 * *Hardware* L/R and *Software* L/R are inverted for 16bit data. 309 * 31..16 15...0 310 * HW: [L ch] [R ch] 311 * SW: [R ch] [L ch] 312 * We need to care about inversion timing to control 313 * Playback/Capture correctly. 314 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R 315 * 316 * sL/R : software L/R 317 * hL/R : hardware L/R 318 * (*) : conversion timing 319 * 320 * Playback 321 * sL/R (*) hL/R hL/R hL/R hL/R hL/R 322 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec 323 * 324 * Capture 325 * hL/R hL/R hL/R hL/R hL/R (*) sL/R 326 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM] 327 */ 328 if (rsnd_io_is_play(io)) { 329 struct rsnd_mod *src = rsnd_io_to_mod_src(io); 330 331 target = src ? src : ssiu; 332 } else { 333 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io); 334 335 target = cmd ? cmd : ssiu; 336 } 337 338 /* Non target mod or 24bit data needs normal DALIGN */ 339 if ((snd_pcm_format_width(runtime->format) != 16) || 340 (mod != target)) 341 return 0x76543210; 342 /* Target mod needs inverted DALIGN when 16bit */ 343 else 344 return 0x67452301; 345 } 346 347 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod) 348 { 349 enum rsnd_mod_type playback_mods[] = { 350 RSND_MOD_SRC, 351 RSND_MOD_CMD, 352 RSND_MOD_SSIU, 353 }; 354 enum rsnd_mod_type capture_mods[] = { 355 RSND_MOD_CMD, 356 RSND_MOD_SRC, 357 RSND_MOD_SSIU, 358 }; 359 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 360 struct rsnd_mod *tmod = NULL; 361 enum rsnd_mod_type *mods = 362 rsnd_io_is_play(io) ? 363 playback_mods : capture_mods; 364 int i; 365 366 /* 367 * This is needed for 24bit data 368 * We need to shift 8bit 369 * 370 * Linux 24bit data is located as 0x00****** 371 * HW 24bit data is located as 0x******00 372 * 373 */ 374 if (snd_pcm_format_width(runtime->format) == 16) 375 return 0; 376 377 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) { 378 tmod = rsnd_io_to_mod(io, mods[i]); 379 if (tmod) 380 break; 381 } 382 383 if (tmod != mod) 384 return 0; 385 386 if (rsnd_io_is_play(io)) 387 return (0 << 20) | /* shift to Left */ 388 (8 << 16); /* 8bit */ 389 else 390 return (1 << 20) | /* shift to Right */ 391 (8 << 16); /* 8bit */ 392 } 393 394 /* 395 * rsnd_dai functions 396 */ 397 struct rsnd_mod *rsnd_mod_next(int *iterator, 398 struct rsnd_dai_stream *io, 399 enum rsnd_mod_type *array, 400 int array_size) 401 { 402 struct rsnd_mod *mod; 403 enum rsnd_mod_type type; 404 int max = array ? array_size : RSND_MOD_MAX; 405 406 for (; *iterator < max; (*iterator)++) { 407 type = (array) ? array[*iterator] : *iterator; 408 mod = rsnd_io_to_mod(io, type); 409 if (mod) 410 return mod; 411 } 412 413 return NULL; 414 } 415 416 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = { 417 { 418 /* CAPTURE */ 419 RSND_MOD_AUDMAPP, 420 RSND_MOD_AUDMA, 421 RSND_MOD_DVC, 422 RSND_MOD_MIX, 423 RSND_MOD_CTU, 424 RSND_MOD_CMD, 425 RSND_MOD_SRC, 426 RSND_MOD_SSIU, 427 RSND_MOD_SSIM3, 428 RSND_MOD_SSIM2, 429 RSND_MOD_SSIM1, 430 RSND_MOD_SSIP, 431 RSND_MOD_SSI, 432 }, { 433 /* PLAYBACK */ 434 RSND_MOD_AUDMAPP, 435 RSND_MOD_AUDMA, 436 RSND_MOD_SSIM3, 437 RSND_MOD_SSIM2, 438 RSND_MOD_SSIM1, 439 RSND_MOD_SSIP, 440 RSND_MOD_SSI, 441 RSND_MOD_SSIU, 442 RSND_MOD_DVC, 443 RSND_MOD_MIX, 444 RSND_MOD_CTU, 445 RSND_MOD_CMD, 446 RSND_MOD_SRC, 447 }, 448 }; 449 450 static int rsnd_status_update(u32 *status, 451 int shift, int add, int timing) 452 { 453 u32 mask = 0xF << shift; 454 u8 val = (*status >> shift) & 0xF; 455 u8 next_val = (val + add) & 0xF; 456 int func_call = (val == timing); 457 458 if (next_val == 0xF) /* underflow case */ 459 func_call = 0; 460 else 461 *status = (*status & ~mask) + (next_val << shift); 462 463 return func_call; 464 } 465 466 #define rsnd_dai_call(fn, io, param...) \ 467 ({ \ 468 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \ 469 struct rsnd_mod *mod; \ 470 int is_play = rsnd_io_is_play(io); \ 471 int ret = 0, i; \ 472 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \ 473 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \ 474 int tmp = 0; \ 475 u32 *status = mod->get_status(io, mod, types[i]); \ 476 int func_call = rsnd_status_update(status, \ 477 __rsnd_mod_shift_##fn, \ 478 __rsnd_mod_add_##fn, \ 479 __rsnd_mod_call_##fn); \ 480 rsnd_dbg_dai_call(dev, "%s[%d]\t0x%08x %s\n", \ 481 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \ 482 (func_call && (mod)->ops->fn) ? #fn : ""); \ 483 if (func_call && (mod)->ops->fn) \ 484 tmp = (mod)->ops->fn(mod, io, param); \ 485 if (tmp) \ 486 dev_err(dev, "%s[%d] : %s error %d\n", \ 487 rsnd_mod_name(mod), rsnd_mod_id(mod), \ 488 #fn, tmp); \ 489 ret |= tmp; \ 490 } \ 491 ret; \ 492 }) 493 494 int rsnd_dai_connect(struct rsnd_mod *mod, 495 struct rsnd_dai_stream *io, 496 enum rsnd_mod_type type) 497 { 498 struct rsnd_priv *priv; 499 struct device *dev; 500 501 if (!mod) 502 return -EIO; 503 504 if (io->mod[type] == mod) 505 return 0; 506 507 if (io->mod[type]) 508 return -EINVAL; 509 510 priv = rsnd_mod_to_priv(mod); 511 dev = rsnd_priv_to_dev(priv); 512 513 io->mod[type] = mod; 514 515 dev_dbg(dev, "%s[%d] is connected to io (%s)\n", 516 rsnd_mod_name(mod), rsnd_mod_id(mod), 517 rsnd_io_is_play(io) ? "Playback" : "Capture"); 518 519 return 0; 520 } 521 522 static void rsnd_dai_disconnect(struct rsnd_mod *mod, 523 struct rsnd_dai_stream *io, 524 enum rsnd_mod_type type) 525 { 526 io->mod[type] = NULL; 527 } 528 529 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai, 530 int max_channels) 531 { 532 if (max_channels > 0) 533 rdai->max_channels = max_channels; 534 535 return rdai->max_channels; 536 } 537 538 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai, 539 int ssi_lane) 540 { 541 if (ssi_lane > 0) 542 rdai->ssi_lane = ssi_lane; 543 544 return rdai->ssi_lane; 545 } 546 547 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id) 548 { 549 if ((id < 0) || (id >= rsnd_rdai_nr(priv))) 550 return NULL; 551 552 return priv->rdai + id; 553 } 554 555 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai) 556 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) 557 { 558 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 559 560 return rsnd_rdai_get(priv, dai->id); 561 } 562 563 /* 564 * rsnd_soc_dai functions 565 */ 566 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io) 567 { 568 struct snd_pcm_substream *substream = io->substream; 569 570 /* 571 * this function should be called... 572 * 573 * - if rsnd_dai_pointer_update() returns true 574 * - without spin lock 575 */ 576 577 snd_pcm_period_elapsed(substream); 578 } 579 580 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io, 581 struct snd_pcm_substream *substream) 582 { 583 io->substream = substream; 584 } 585 586 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io) 587 { 588 io->substream = NULL; 589 } 590 591 static 592 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) 593 { 594 struct snd_soc_pcm_runtime *rtd = substream->private_data; 595 596 return rtd->cpu_dai; 597 } 598 599 static 600 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, 601 struct snd_pcm_substream *substream) 602 { 603 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 604 return &rdai->playback; 605 else 606 return &rdai->capture; 607 } 608 609 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, 610 struct snd_soc_dai *dai) 611 { 612 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 613 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 614 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 615 int ret; 616 unsigned long flags; 617 618 spin_lock_irqsave(&priv->lock, flags); 619 620 switch (cmd) { 621 case SNDRV_PCM_TRIGGER_START: 622 case SNDRV_PCM_TRIGGER_RESUME: 623 ret = rsnd_dai_call(init, io, priv); 624 if (ret < 0) 625 goto dai_trigger_end; 626 627 ret = rsnd_dai_call(start, io, priv); 628 if (ret < 0) 629 goto dai_trigger_end; 630 631 ret = rsnd_dai_call(irq, io, priv, 1); 632 if (ret < 0) 633 goto dai_trigger_end; 634 635 break; 636 case SNDRV_PCM_TRIGGER_STOP: 637 case SNDRV_PCM_TRIGGER_SUSPEND: 638 ret = rsnd_dai_call(irq, io, priv, 0); 639 640 ret |= rsnd_dai_call(stop, io, priv); 641 642 ret |= rsnd_dai_call(quit, io, priv); 643 644 break; 645 default: 646 ret = -EINVAL; 647 } 648 649 dai_trigger_end: 650 spin_unlock_irqrestore(&priv->lock, flags); 651 652 return ret; 653 } 654 655 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) 656 { 657 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 658 659 /* set master/slave audio interface */ 660 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 661 case SND_SOC_DAIFMT_CBM_CFM: 662 rdai->clk_master = 0; 663 break; 664 case SND_SOC_DAIFMT_CBS_CFS: 665 rdai->clk_master = 1; /* codec is slave, cpu is master */ 666 break; 667 default: 668 return -EINVAL; 669 } 670 671 /* set format */ 672 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 673 case SND_SOC_DAIFMT_I2S: 674 rdai->sys_delay = 0; 675 rdai->data_alignment = 0; 676 rdai->frm_clk_inv = 0; 677 break; 678 case SND_SOC_DAIFMT_LEFT_J: 679 rdai->sys_delay = 1; 680 rdai->data_alignment = 0; 681 rdai->frm_clk_inv = 1; 682 break; 683 case SND_SOC_DAIFMT_RIGHT_J: 684 rdai->sys_delay = 1; 685 rdai->data_alignment = 1; 686 rdai->frm_clk_inv = 1; 687 break; 688 } 689 690 /* set clock inversion */ 691 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 692 case SND_SOC_DAIFMT_NB_IF: 693 rdai->frm_clk_inv = !rdai->frm_clk_inv; 694 break; 695 case SND_SOC_DAIFMT_IB_NF: 696 rdai->bit_clk_inv = !rdai->bit_clk_inv; 697 break; 698 case SND_SOC_DAIFMT_IB_IF: 699 rdai->bit_clk_inv = !rdai->bit_clk_inv; 700 rdai->frm_clk_inv = !rdai->frm_clk_inv; 701 break; 702 case SND_SOC_DAIFMT_NB_NF: 703 default: 704 break; 705 } 706 707 return 0; 708 } 709 710 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, 711 u32 tx_mask, u32 rx_mask, 712 int slots, int slot_width) 713 { 714 struct rsnd_priv *priv = rsnd_dai_to_priv(dai); 715 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 716 struct device *dev = rsnd_priv_to_dev(priv); 717 718 switch (slots) { 719 case 2: 720 case 6: 721 case 8: 722 /* TDM Extend Mode */ 723 rsnd_rdai_channels_set(rdai, slots); 724 rsnd_rdai_ssi_lane_set(rdai, 1); 725 break; 726 default: 727 dev_err(dev, "unsupported TDM slots (%d)\n", slots); 728 return -EINVAL; 729 } 730 731 return 0; 732 } 733 734 static unsigned int rsnd_soc_hw_channels_list[] = { 735 2, 6, 8, 736 }; 737 738 static unsigned int rsnd_soc_hw_rate_list[] = { 739 8000, 740 11025, 741 16000, 742 22050, 743 32000, 744 44100, 745 48000, 746 64000, 747 88200, 748 96000, 749 176400, 750 192000, 751 }; 752 753 static int rsnd_soc_hw_rule(struct rsnd_priv *priv, 754 unsigned int *list, int list_num, 755 struct snd_interval *baseline, struct snd_interval *iv) 756 { 757 struct snd_interval p; 758 unsigned int rate; 759 int i; 760 761 snd_interval_any(&p); 762 p.min = UINT_MAX; 763 p.max = 0; 764 765 for (i = 0; i < list_num; i++) { 766 767 if (!snd_interval_test(iv, list[i])) 768 continue; 769 770 rate = rsnd_ssi_clk_query(priv, 771 baseline->min, list[i], NULL); 772 if (rate > 0) { 773 p.min = min(p.min, list[i]); 774 p.max = max(p.max, list[i]); 775 } 776 777 rate = rsnd_ssi_clk_query(priv, 778 baseline->max, list[i], NULL); 779 if (rate > 0) { 780 p.min = min(p.min, list[i]); 781 p.max = max(p.max, list[i]); 782 } 783 } 784 785 return snd_interval_refine(iv, &p); 786 } 787 788 static int __rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params, 789 struct snd_pcm_hw_rule *rule, 790 int is_play) 791 { 792 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 793 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 794 struct snd_interval ic; 795 struct snd_soc_dai *dai = rule->private; 796 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 797 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 798 struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture; 799 800 /* 801 * possible sampling rate limitation is same as 802 * 2ch if it supports multi ssi 803 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 804 */ 805 ic = *ic_; 806 ic.min = 807 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 808 809 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list, 810 ARRAY_SIZE(rsnd_soc_hw_rate_list), 811 &ic, ir); 812 } 813 814 static int rsnd_soc_hw_rule_rate_playback(struct snd_pcm_hw_params *params, 815 struct snd_pcm_hw_rule *rule) 816 { 817 return __rsnd_soc_hw_rule_rate(params, rule, 1); 818 } 819 820 static int rsnd_soc_hw_rule_rate_capture(struct snd_pcm_hw_params *params, 821 struct snd_pcm_hw_rule *rule) 822 { 823 return __rsnd_soc_hw_rule_rate(params, rule, 0); 824 } 825 826 static int __rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params, 827 struct snd_pcm_hw_rule *rule, 828 int is_play) 829 { 830 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 831 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 832 struct snd_interval ic; 833 struct snd_soc_dai *dai = rule->private; 834 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 835 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 836 struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture; 837 838 /* 839 * possible sampling rate limitation is same as 840 * 2ch if it supports multi ssi 841 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init()) 842 */ 843 ic = *ic_; 844 ic.min = 845 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params); 846 847 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list, 848 ARRAY_SIZE(rsnd_soc_hw_channels_list), 849 ir, &ic); 850 } 851 852 static int rsnd_soc_hw_rule_channels_playback(struct snd_pcm_hw_params *params, 853 struct snd_pcm_hw_rule *rule) 854 { 855 return __rsnd_soc_hw_rule_channels(params, rule, 1); 856 } 857 858 static int rsnd_soc_hw_rule_channels_capture(struct snd_pcm_hw_params *params, 859 struct snd_pcm_hw_rule *rule) 860 { 861 return __rsnd_soc_hw_rule_channels(params, rule, 0); 862 } 863 864 static const struct snd_pcm_hardware rsnd_pcm_hardware = { 865 .info = SNDRV_PCM_INFO_INTERLEAVED | 866 SNDRV_PCM_INFO_MMAP | 867 SNDRV_PCM_INFO_MMAP_VALID, 868 .buffer_bytes_max = 64 * 1024, 869 .period_bytes_min = 32, 870 .period_bytes_max = 8192, 871 .periods_min = 1, 872 .periods_max = 32, 873 .fifo_size = 256, 874 }; 875 876 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream, 877 struct snd_soc_dai *dai) 878 { 879 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 880 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 881 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 882 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint; 883 struct snd_pcm_runtime *runtime = substream->runtime; 884 unsigned int max_channels = rsnd_rdai_channels_get(rdai); 885 int ret; 886 int i; 887 888 rsnd_dai_stream_init(io, substream); 889 890 /* 891 * Channel Limitation 892 * It depends on Platform design 893 */ 894 constraint->list = rsnd_soc_hw_channels_list; 895 constraint->count = 0; 896 constraint->mask = 0; 897 898 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) { 899 if (rsnd_soc_hw_channels_list[i] > max_channels) 900 break; 901 constraint->count = i + 1; 902 } 903 904 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); 905 906 snd_pcm_hw_constraint_list(runtime, 0, 907 SNDRV_PCM_HW_PARAM_CHANNELS, constraint); 908 909 snd_pcm_hw_constraint_integer(runtime, 910 SNDRV_PCM_HW_PARAM_PERIODS); 911 912 /* 913 * Sampling Rate / Channel Limitation 914 * It depends on Clock Master Mode 915 */ 916 if (rsnd_rdai_is_clk_master(rdai)) { 917 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 918 919 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 920 is_play ? rsnd_soc_hw_rule_rate_playback : 921 rsnd_soc_hw_rule_rate_capture, 922 dai, 923 SNDRV_PCM_HW_PARAM_CHANNELS, -1); 924 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 925 is_play ? rsnd_soc_hw_rule_channels_playback : 926 rsnd_soc_hw_rule_channels_capture, 927 dai, 928 SNDRV_PCM_HW_PARAM_RATE, -1); 929 } 930 931 /* 932 * call rsnd_dai_call without spinlock 933 */ 934 ret = rsnd_dai_call(nolock_start, io, priv); 935 if (ret < 0) 936 rsnd_dai_call(nolock_stop, io, priv); 937 938 return ret; 939 } 940 941 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream, 942 struct snd_soc_dai *dai) 943 { 944 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 945 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 946 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 947 948 /* 949 * call rsnd_dai_call without spinlock 950 */ 951 rsnd_dai_call(nolock_stop, io, priv); 952 953 rsnd_dai_stream_quit(io); 954 } 955 956 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { 957 .startup = rsnd_soc_dai_startup, 958 .shutdown = rsnd_soc_dai_shutdown, 959 .trigger = rsnd_soc_dai_trigger, 960 .set_fmt = rsnd_soc_dai_set_fmt, 961 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot, 962 }; 963 964 void rsnd_parse_connect_common(struct rsnd_dai *rdai, 965 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id), 966 struct device_node *node, 967 struct device_node *playback, 968 struct device_node *capture) 969 { 970 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); 971 struct device_node *np; 972 struct rsnd_mod *mod; 973 int i; 974 975 if (!node) 976 return; 977 978 i = 0; 979 for_each_child_of_node(node, np) { 980 mod = mod_get(priv, i); 981 if (np == playback) 982 rsnd_dai_connect(mod, &rdai->playback, mod->type); 983 if (np == capture) 984 rsnd_dai_connect(mod, &rdai->capture, mod->type); 985 i++; 986 } 987 988 of_node_put(node); 989 } 990 991 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv, 992 int *is_graph) 993 { 994 struct device *dev = rsnd_priv_to_dev(priv); 995 struct device_node *np = dev->of_node; 996 struct device_node *dai_node; 997 struct device_node *ret; 998 999 *is_graph = 0; 1000 1001 /* 1002 * parse both previous dai (= rcar_sound,dai), and 1003 * graph dai (= ports/port) 1004 */ 1005 dai_node = of_get_child_by_name(np, RSND_NODE_DAI); 1006 if (dai_node) { 1007 ret = dai_node; 1008 goto of_node_compatible; 1009 } 1010 1011 ret = np; 1012 1013 dai_node = of_graph_get_next_endpoint(np, NULL); 1014 if (dai_node) 1015 goto of_node_graph; 1016 1017 return NULL; 1018 1019 of_node_graph: 1020 *is_graph = 1; 1021 of_node_compatible: 1022 of_node_put(dai_node); 1023 1024 return ret; 1025 } 1026 1027 static void __rsnd_dai_probe(struct rsnd_priv *priv, 1028 struct device_node *dai_np, 1029 int dai_i) 1030 { 1031 struct device_node *playback, *capture; 1032 struct rsnd_dai_stream *io_playback; 1033 struct rsnd_dai_stream *io_capture; 1034 struct snd_soc_dai_driver *drv; 1035 struct rsnd_dai *rdai; 1036 struct device *dev = rsnd_priv_to_dev(priv); 1037 int io_i; 1038 1039 rdai = rsnd_rdai_get(priv, dai_i); 1040 drv = priv->daidrv + dai_i; 1041 io_playback = &rdai->playback; 1042 io_capture = &rdai->capture; 1043 1044 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i); 1045 1046 rdai->priv = priv; 1047 drv->name = rdai->name; 1048 drv->ops = &rsnd_soc_dai_ops; 1049 1050 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE, 1051 "DAI%d Playback", dai_i); 1052 drv->playback.rates = RSND_RATES; 1053 drv->playback.formats = RSND_FMTS; 1054 drv->playback.channels_min = 2; 1055 drv->playback.channels_max = 8; 1056 drv->playback.stream_name = rdai->playback.name; 1057 1058 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, 1059 "DAI%d Capture", dai_i); 1060 drv->capture.rates = RSND_RATES; 1061 drv->capture.formats = RSND_FMTS; 1062 drv->capture.channels_min = 2; 1063 drv->capture.channels_max = 8; 1064 drv->capture.stream_name = rdai->capture.name; 1065 1066 rdai->playback.rdai = rdai; 1067 rdai->capture.rdai = rdai; 1068 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */ 1069 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */ 1070 1071 for (io_i = 0;; io_i++) { 1072 playback = of_parse_phandle(dai_np, "playback", io_i); 1073 capture = of_parse_phandle(dai_np, "capture", io_i); 1074 1075 if (!playback && !capture) 1076 break; 1077 1078 rsnd_parse_connect_ssi(rdai, playback, capture); 1079 rsnd_parse_connect_src(rdai, playback, capture); 1080 rsnd_parse_connect_ctu(rdai, playback, capture); 1081 rsnd_parse_connect_mix(rdai, playback, capture); 1082 rsnd_parse_connect_dvc(rdai, playback, capture); 1083 1084 of_node_put(playback); 1085 of_node_put(capture); 1086 } 1087 1088 dev_dbg(dev, "%s (%s/%s)\n", rdai->name, 1089 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ", 1090 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- "); 1091 } 1092 1093 static int rsnd_dai_probe(struct rsnd_priv *priv) 1094 { 1095 struct device_node *dai_node; 1096 struct device_node *dai_np; 1097 struct snd_soc_dai_driver *rdrv; 1098 struct device *dev = rsnd_priv_to_dev(priv); 1099 struct rsnd_dai *rdai; 1100 int nr; 1101 int is_graph; 1102 int dai_i; 1103 1104 dai_node = rsnd_dai_of_node(priv, &is_graph); 1105 if (is_graph) 1106 nr = of_graph_get_endpoint_count(dai_node); 1107 else 1108 nr = of_get_child_count(dai_node); 1109 1110 if (!nr) 1111 return -EINVAL; 1112 1113 rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL); 1114 rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL); 1115 if (!rdrv || !rdai) 1116 return -ENOMEM; 1117 1118 priv->rdai_nr = nr; 1119 priv->daidrv = rdrv; 1120 priv->rdai = rdai; 1121 1122 /* 1123 * parse all dai 1124 */ 1125 dai_i = 0; 1126 if (is_graph) { 1127 for_each_endpoint_of_node(dai_node, dai_np) { 1128 __rsnd_dai_probe(priv, dai_np, dai_i); 1129 rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i); 1130 dai_i++; 1131 } 1132 } else { 1133 for_each_child_of_node(dai_node, dai_np) 1134 __rsnd_dai_probe(priv, dai_np, dai_i++); 1135 } 1136 1137 return 0; 1138 } 1139 1140 /* 1141 * pcm ops 1142 */ 1143 static int rsnd_hw_params(struct snd_pcm_substream *substream, 1144 struct snd_pcm_hw_params *hw_params) 1145 { 1146 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1147 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1148 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1149 int ret; 1150 1151 ret = rsnd_dai_call(hw_params, io, substream, hw_params); 1152 if (ret) 1153 return ret; 1154 1155 return snd_pcm_lib_malloc_pages(substream, 1156 params_buffer_bytes(hw_params)); 1157 } 1158 1159 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) 1160 { 1161 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); 1162 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1163 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); 1164 snd_pcm_uframes_t pointer = 0; 1165 1166 rsnd_dai_call(pointer, io, &pointer); 1167 1168 return pointer; 1169 } 1170 1171 static const struct snd_pcm_ops rsnd_pcm_ops = { 1172 .ioctl = snd_pcm_lib_ioctl, 1173 .hw_params = rsnd_hw_params, 1174 .hw_free = snd_pcm_lib_free_pages, 1175 .pointer = rsnd_pointer, 1176 }; 1177 1178 /* 1179 * snd_kcontrol 1180 */ 1181 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl, 1182 struct snd_ctl_elem_info *uinfo) 1183 { 1184 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1185 1186 if (cfg->texts) { 1187 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 1188 uinfo->count = cfg->size; 1189 uinfo->value.enumerated.items = cfg->max; 1190 if (uinfo->value.enumerated.item >= cfg->max) 1191 uinfo->value.enumerated.item = cfg->max - 1; 1192 strlcpy(uinfo->value.enumerated.name, 1193 cfg->texts[uinfo->value.enumerated.item], 1194 sizeof(uinfo->value.enumerated.name)); 1195 } else { 1196 uinfo->count = cfg->size; 1197 uinfo->value.integer.min = 0; 1198 uinfo->value.integer.max = cfg->max; 1199 uinfo->type = (cfg->max == 1) ? 1200 SNDRV_CTL_ELEM_TYPE_BOOLEAN : 1201 SNDRV_CTL_ELEM_TYPE_INTEGER; 1202 } 1203 1204 return 0; 1205 } 1206 1207 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl, 1208 struct snd_ctl_elem_value *uc) 1209 { 1210 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1211 int i; 1212 1213 for (i = 0; i < cfg->size; i++) 1214 if (cfg->texts) 1215 uc->value.enumerated.item[i] = cfg->val[i]; 1216 else 1217 uc->value.integer.value[i] = cfg->val[i]; 1218 1219 return 0; 1220 } 1221 1222 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl, 1223 struct snd_ctl_elem_value *uc) 1224 { 1225 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl); 1226 int i, change = 0; 1227 1228 if (!cfg->accept(cfg->io)) 1229 return 0; 1230 1231 for (i = 0; i < cfg->size; i++) { 1232 if (cfg->texts) { 1233 change |= (uc->value.enumerated.item[i] != cfg->val[i]); 1234 cfg->val[i] = uc->value.enumerated.item[i]; 1235 } else { 1236 change |= (uc->value.integer.value[i] != cfg->val[i]); 1237 cfg->val[i] = uc->value.integer.value[i]; 1238 } 1239 } 1240 1241 if (change && cfg->update) 1242 cfg->update(cfg->io, cfg->mod); 1243 1244 return change; 1245 } 1246 1247 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io) 1248 { 1249 return 1; 1250 } 1251 1252 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io) 1253 { 1254 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); 1255 1256 return !!runtime; 1257 } 1258 1259 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg) 1260 { 1261 cfg->cfg.val = cfg->val; 1262 1263 return &cfg->cfg; 1264 } 1265 1266 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg) 1267 { 1268 cfg->cfg.val = &cfg->val; 1269 1270 return &cfg->cfg; 1271 } 1272 1273 const char * const volume_ramp_rate[] = { 1274 "128 dB/1 step", /* 00000 */ 1275 "64 dB/1 step", /* 00001 */ 1276 "32 dB/1 step", /* 00010 */ 1277 "16 dB/1 step", /* 00011 */ 1278 "8 dB/1 step", /* 00100 */ 1279 "4 dB/1 step", /* 00101 */ 1280 "2 dB/1 step", /* 00110 */ 1281 "1 dB/1 step", /* 00111 */ 1282 "0.5 dB/1 step", /* 01000 */ 1283 "0.25 dB/1 step", /* 01001 */ 1284 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */ 1285 "0.125 dB/2 steps", /* 01011 */ 1286 "0.125 dB/4 steps", /* 01100 */ 1287 "0.125 dB/8 steps", /* 01101 */ 1288 "0.125 dB/16 steps", /* 01110 */ 1289 "0.125 dB/32 steps", /* 01111 */ 1290 "0.125 dB/64 steps", /* 10000 */ 1291 "0.125 dB/128 steps", /* 10001 */ 1292 "0.125 dB/256 steps", /* 10010 */ 1293 "0.125 dB/512 steps", /* 10011 */ 1294 "0.125 dB/1024 steps", /* 10100 */ 1295 "0.125 dB/2048 steps", /* 10101 */ 1296 "0.125 dB/4096 steps", /* 10110 */ 1297 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */ 1298 }; 1299 1300 int rsnd_kctrl_new(struct rsnd_mod *mod, 1301 struct rsnd_dai_stream *io, 1302 struct snd_soc_pcm_runtime *rtd, 1303 const unsigned char *name, 1304 int (*accept)(struct rsnd_dai_stream *io), 1305 void (*update)(struct rsnd_dai_stream *io, 1306 struct rsnd_mod *mod), 1307 struct rsnd_kctrl_cfg *cfg, 1308 const char * const *texts, 1309 int size, 1310 u32 max) 1311 { 1312 struct snd_card *card = rtd->card->snd_card; 1313 struct snd_kcontrol *kctrl; 1314 struct snd_kcontrol_new knew = { 1315 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1316 .name = name, 1317 .info = rsnd_kctrl_info, 1318 .index = rtd->num, 1319 .get = rsnd_kctrl_get, 1320 .put = rsnd_kctrl_put, 1321 }; 1322 int ret; 1323 1324 if (size > RSND_MAX_CHANNELS) 1325 return -EINVAL; 1326 1327 kctrl = snd_ctl_new1(&knew, cfg); 1328 if (!kctrl) 1329 return -ENOMEM; 1330 1331 ret = snd_ctl_add(card, kctrl); 1332 if (ret < 0) 1333 return ret; 1334 1335 cfg->texts = texts; 1336 cfg->max = max; 1337 cfg->size = size; 1338 cfg->accept = accept; 1339 cfg->update = update; 1340 cfg->card = card; 1341 cfg->kctrl = kctrl; 1342 cfg->io = io; 1343 cfg->mod = mod; 1344 1345 return 0; 1346 } 1347 1348 /* 1349 * snd_soc_component 1350 */ 1351 1352 #define PREALLOC_BUFFER (32 * 1024) 1353 #define PREALLOC_BUFFER_MAX (32 * 1024) 1354 1355 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd, 1356 struct rsnd_dai_stream *io, 1357 int stream) 1358 { 1359 struct rsnd_priv *priv = rsnd_io_to_priv(io); 1360 struct device *dev = rsnd_priv_to_dev(priv); 1361 struct snd_pcm_substream *substream; 1362 int err; 1363 1364 /* 1365 * use Audio-DMAC dev if we can use IPMMU 1366 * see 1367 * rsnd_dmaen_attach() 1368 */ 1369 if (io->dmac_dev) 1370 dev = io->dmac_dev; 1371 1372 for (substream = rtd->pcm->streams[stream].substream; 1373 substream; 1374 substream = substream->next) { 1375 err = snd_pcm_lib_preallocate_pages(substream, 1376 SNDRV_DMA_TYPE_DEV, 1377 dev, 1378 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); 1379 if (err < 0) 1380 return err; 1381 } 1382 1383 return 0; 1384 } 1385 1386 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) 1387 { 1388 struct snd_soc_dai *dai = rtd->cpu_dai; 1389 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); 1390 int ret; 1391 1392 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd); 1393 if (ret) 1394 return ret; 1395 1396 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd); 1397 if (ret) 1398 return ret; 1399 1400 ret = rsnd_preallocate_pages(rtd, &rdai->playback, 1401 SNDRV_PCM_STREAM_PLAYBACK); 1402 if (ret) 1403 return ret; 1404 1405 ret = rsnd_preallocate_pages(rtd, &rdai->capture, 1406 SNDRV_PCM_STREAM_CAPTURE); 1407 if (ret) 1408 return ret; 1409 1410 return 0; 1411 } 1412 1413 static const struct snd_soc_component_driver rsnd_soc_component = { 1414 .ops = &rsnd_pcm_ops, 1415 .pcm_new = rsnd_pcm_new, 1416 .name = "rsnd", 1417 }; 1418 1419 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, 1420 struct rsnd_dai_stream *io) 1421 { 1422 int ret; 1423 1424 ret = rsnd_dai_call(probe, io, priv); 1425 if (ret == -EAGAIN) { 1426 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); 1427 struct rsnd_mod *mod; 1428 int i; 1429 1430 /* 1431 * Fallback to PIO mode 1432 */ 1433 1434 /* 1435 * call "remove" for SSI/SRC/DVC 1436 * SSI will be switch to PIO mode if it was DMA mode 1437 * see 1438 * rsnd_dma_init() 1439 * rsnd_ssi_fallback() 1440 */ 1441 rsnd_dai_call(remove, io, priv); 1442 1443 /* 1444 * remove all mod from io 1445 * and, re connect ssi 1446 */ 1447 for_each_rsnd_mod(i, mod, io) 1448 rsnd_dai_disconnect(mod, io, i); 1449 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI); 1450 1451 /* 1452 * fallback 1453 */ 1454 rsnd_dai_call(fallback, io, priv); 1455 1456 /* 1457 * retry to "probe". 1458 * DAI has SSI which is PIO mode only now. 1459 */ 1460 ret = rsnd_dai_call(probe, io, priv); 1461 } 1462 1463 return ret; 1464 } 1465 1466 /* 1467 * rsnd probe 1468 */ 1469 static int rsnd_probe(struct platform_device *pdev) 1470 { 1471 struct rsnd_priv *priv; 1472 struct device *dev = &pdev->dev; 1473 struct rsnd_dai *rdai; 1474 int (*probe_func[])(struct rsnd_priv *priv) = { 1475 rsnd_gen_probe, 1476 rsnd_dma_probe, 1477 rsnd_ssi_probe, 1478 rsnd_ssiu_probe, 1479 rsnd_src_probe, 1480 rsnd_ctu_probe, 1481 rsnd_mix_probe, 1482 rsnd_dvc_probe, 1483 rsnd_cmd_probe, 1484 rsnd_adg_probe, 1485 rsnd_dai_probe, 1486 }; 1487 int ret, i; 1488 1489 /* 1490 * init priv data 1491 */ 1492 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1493 if (!priv) 1494 return -ENODEV; 1495 1496 priv->pdev = pdev; 1497 priv->flags = (unsigned long)of_device_get_match_data(dev); 1498 spin_lock_init(&priv->lock); 1499 1500 /* 1501 * init each module 1502 */ 1503 for (i = 0; i < ARRAY_SIZE(probe_func); i++) { 1504 ret = probe_func[i](priv); 1505 if (ret) 1506 return ret; 1507 } 1508 1509 for_each_rsnd_dai(rdai, priv, i) { 1510 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback); 1511 if (ret) 1512 goto exit_snd_probe; 1513 1514 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture); 1515 if (ret) 1516 goto exit_snd_probe; 1517 } 1518 1519 dev_set_drvdata(dev, priv); 1520 1521 /* 1522 * asoc register 1523 */ 1524 ret = devm_snd_soc_register_component(dev, &rsnd_soc_component, 1525 priv->daidrv, rsnd_rdai_nr(priv)); 1526 if (ret < 0) { 1527 dev_err(dev, "cannot snd dai register\n"); 1528 goto exit_snd_probe; 1529 } 1530 1531 pm_runtime_enable(dev); 1532 1533 dev_info(dev, "probed\n"); 1534 return ret; 1535 1536 exit_snd_probe: 1537 for_each_rsnd_dai(rdai, priv, i) { 1538 rsnd_dai_call(remove, &rdai->playback, priv); 1539 rsnd_dai_call(remove, &rdai->capture, priv); 1540 } 1541 1542 return ret; 1543 } 1544 1545 static int rsnd_remove(struct platform_device *pdev) 1546 { 1547 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); 1548 struct rsnd_dai *rdai; 1549 void (*remove_func[])(struct rsnd_priv *priv) = { 1550 rsnd_ssi_remove, 1551 rsnd_ssiu_remove, 1552 rsnd_src_remove, 1553 rsnd_ctu_remove, 1554 rsnd_mix_remove, 1555 rsnd_dvc_remove, 1556 rsnd_cmd_remove, 1557 rsnd_adg_remove, 1558 }; 1559 int ret = 0, i; 1560 1561 snd_soc_disconnect_sync(&pdev->dev); 1562 1563 pm_runtime_disable(&pdev->dev); 1564 1565 for_each_rsnd_dai(rdai, priv, i) { 1566 ret |= rsnd_dai_call(remove, &rdai->playback, priv); 1567 ret |= rsnd_dai_call(remove, &rdai->capture, priv); 1568 } 1569 1570 for (i = 0; i < ARRAY_SIZE(remove_func); i++) 1571 remove_func[i](priv); 1572 1573 return ret; 1574 } 1575 1576 static int __maybe_unused rsnd_suspend(struct device *dev) 1577 { 1578 struct rsnd_priv *priv = dev_get_drvdata(dev); 1579 1580 rsnd_adg_clk_disable(priv); 1581 1582 return 0; 1583 } 1584 1585 static int __maybe_unused rsnd_resume(struct device *dev) 1586 { 1587 struct rsnd_priv *priv = dev_get_drvdata(dev); 1588 1589 rsnd_adg_clk_enable(priv); 1590 1591 return 0; 1592 } 1593 1594 static const struct dev_pm_ops rsnd_pm_ops = { 1595 SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume) 1596 }; 1597 1598 static struct platform_driver rsnd_driver = { 1599 .driver = { 1600 .name = "rcar_sound", 1601 .pm = &rsnd_pm_ops, 1602 .of_match_table = rsnd_of_match, 1603 }, 1604 .probe = rsnd_probe, 1605 .remove = rsnd_remove, 1606 }; 1607 module_platform_driver(rsnd_driver); 1608 1609 MODULE_LICENSE("GPL"); 1610 MODULE_DESCRIPTION("Renesas R-Car audio driver"); 1611 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 1612 MODULE_ALIAS("platform:rcar-pcm-audio"); 1613