| 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 <linux/shdma-base.h> |
| 98 | #include "rsnd.h" |
| 99 | |
| 100 | #define RSND_RATES SNDRV_PCM_RATE_8000_96000 |
| 101 | #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) |
| 102 | |
| 103 | static struct rsnd_of_data rsnd_of_data_gen1 = { |
| 104 | .flags = RSND_GEN1, |
| 105 | }; |
| 106 | |
| 107 | static struct rsnd_of_data rsnd_of_data_gen2 = { |
| 108 | .flags = RSND_GEN2, |
| 109 | }; |
| 110 | |
| 111 | static struct of_device_id rsnd_of_match[] = { |
| 112 | { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 }, |
| 113 | { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 }, |
| 114 | {}, |
| 115 | }; |
| 116 | MODULE_DEVICE_TABLE(of, rsnd_of_match); |
| 117 | |
| 118 | /* |
| 119 | * rsnd_platform functions |
| 120 | */ |
| 121 | #define rsnd_platform_call(priv, dai, func, param...) \ |
| 122 | (!(priv->info->func) ? 0 : \ |
| 123 | priv->info->func(param)) |
| 124 | |
| 125 | #define rsnd_is_enable_path(io, name) \ |
| 126 | ((io)->info ? (io)->info->name : NULL) |
| 127 | #define rsnd_info_id(priv, io, name) \ |
| 128 | ((io)->info->name - priv->info->name##_info) |
| 129 | |
| 130 | /* |
| 131 | * rsnd_mod functions |
| 132 | */ |
| 133 | char *rsnd_mod_name(struct rsnd_mod *mod) |
| 134 | { |
| 135 | if (!mod || !mod->ops) |
| 136 | return "unknown"; |
| 137 | |
| 138 | return mod->ops->name; |
| 139 | } |
| 140 | |
| 141 | void rsnd_mod_init(struct rsnd_priv *priv, |
| 142 | struct rsnd_mod *mod, |
| 143 | struct rsnd_mod_ops *ops, |
| 144 | enum rsnd_mod_type type, |
| 145 | int id) |
| 146 | { |
| 147 | mod->priv = priv; |
| 148 | mod->id = id; |
| 149 | mod->ops = ops; |
| 150 | mod->type = type; |
| 151 | } |
| 152 | |
| 153 | /* |
| 154 | * rsnd_dma functions |
| 155 | */ |
| 156 | static void __rsnd_dma_start(struct rsnd_dma *dma); |
| 157 | static void rsnd_dma_continue(struct rsnd_dma *dma) |
| 158 | { |
| 159 | /* push next A or B plane */ |
| 160 | dma->submit_loop = 1; |
| 161 | schedule_work(&dma->work); |
| 162 | } |
| 163 | |
| 164 | void rsnd_dma_start(struct rsnd_dma *dma) |
| 165 | { |
| 166 | /* push both A and B plane*/ |
| 167 | dma->offset = 0; |
| 168 | dma->submit_loop = 2; |
| 169 | __rsnd_dma_start(dma); |
| 170 | } |
| 171 | |
| 172 | void rsnd_dma_stop(struct rsnd_dma *dma) |
| 173 | { |
| 174 | dma->submit_loop = 0; |
| 175 | cancel_work_sync(&dma->work); |
| 176 | dmaengine_terminate_all(dma->chan); |
| 177 | } |
| 178 | |
| 179 | static void rsnd_dma_complete(void *data) |
| 180 | { |
| 181 | struct rsnd_dma *dma = (struct rsnd_dma *)data; |
| 182 | struct rsnd_mod *mod = rsnd_dma_to_mod(dma); |
| 183 | struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma)); |
| 184 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); |
| 185 | unsigned long flags; |
| 186 | |
| 187 | rsnd_lock(priv, flags); |
| 188 | |
| 189 | /* |
| 190 | * Renesas sound Gen1 needs 1 DMAC, |
| 191 | * Gen2 needs 2 DMAC. |
| 192 | * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri. |
| 193 | * But, Audio-DMAC-peri-peri doesn't have interrupt, |
| 194 | * and this driver is assuming that here. |
| 195 | * |
| 196 | * If Audio-DMAC-peri-peri has interrpt, |
| 197 | * rsnd_dai_pointer_update() will be called twice, |
| 198 | * ant it will breaks io->byte_pos |
| 199 | */ |
| 200 | if (dma->submit_loop) |
| 201 | rsnd_dma_continue(dma); |
| 202 | |
| 203 | rsnd_unlock(priv, flags); |
| 204 | |
| 205 | rsnd_dai_pointer_update(io, io->byte_per_period); |
| 206 | } |
| 207 | |
| 208 | static void __rsnd_dma_start(struct rsnd_dma *dma) |
| 209 | { |
| 210 | struct rsnd_mod *mod = rsnd_dma_to_mod(dma); |
| 211 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| 212 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); |
| 213 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
| 214 | struct device *dev = rsnd_priv_to_dev(priv); |
| 215 | struct dma_async_tx_descriptor *desc; |
| 216 | dma_addr_t buf; |
| 217 | size_t len = io->byte_per_period; |
| 218 | int i; |
| 219 | |
| 220 | for (i = 0; i < dma->submit_loop; i++) { |
| 221 | |
| 222 | buf = runtime->dma_addr + |
| 223 | rsnd_dai_pointer_offset(io, dma->offset + len); |
| 224 | dma->offset = len; |
| 225 | |
| 226 | desc = dmaengine_prep_slave_single( |
| 227 | dma->chan, buf, len, dma->dir, |
| 228 | DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |
| 229 | if (!desc) { |
| 230 | dev_err(dev, "dmaengine_prep_slave_sg() fail\n"); |
| 231 | return; |
| 232 | } |
| 233 | |
| 234 | desc->callback = rsnd_dma_complete; |
| 235 | desc->callback_param = dma; |
| 236 | |
| 237 | if (dmaengine_submit(desc) < 0) { |
| 238 | dev_err(dev, "dmaengine_submit() fail\n"); |
| 239 | return; |
| 240 | } |
| 241 | |
| 242 | dma_async_issue_pending(dma->chan); |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | static void rsnd_dma_do_work(struct work_struct *work) |
| 247 | { |
| 248 | struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work); |
| 249 | |
| 250 | __rsnd_dma_start(dma); |
| 251 | } |
| 252 | |
| 253 | int rsnd_dma_available(struct rsnd_dma *dma) |
| 254 | { |
| 255 | return !!dma->chan; |
| 256 | } |
| 257 | |
| 258 | #define DMA_NAME_SIZE 16 |
| 259 | #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */ |
| 260 | static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod) |
| 261 | { |
| 262 | if (mod) |
| 263 | return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d", |
| 264 | rsnd_mod_name(mod), rsnd_mod_id(mod)); |
| 265 | else |
| 266 | return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem"); |
| 267 | |
| 268 | } |
| 269 | |
| 270 | static void rsnd_dma_of_name(struct rsnd_dma *dma, |
| 271 | int is_play, char *dma_name) |
| 272 | { |
| 273 | struct rsnd_mod *this = rsnd_dma_to_mod(dma); |
| 274 | struct rsnd_dai_stream *io = rsnd_mod_to_io(this); |
| 275 | struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io); |
| 276 | struct rsnd_mod *src = rsnd_io_to_mod_src(io); |
| 277 | struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); |
| 278 | struct rsnd_mod *mod[MOD_MAX]; |
| 279 | struct rsnd_mod *src_mod, *dst_mod; |
| 280 | int i, index; |
| 281 | |
| 282 | |
| 283 | for (i = 0; i < MOD_MAX; i++) |
| 284 | mod[i] = NULL; |
| 285 | |
| 286 | /* |
| 287 | * in play case... |
| 288 | * |
| 289 | * src -> dst |
| 290 | * |
| 291 | * mem -> SSI |
| 292 | * mem -> SRC -> SSI |
| 293 | * mem -> SRC -> DVC -> SSI |
| 294 | */ |
| 295 | mod[0] = NULL; /* for "mem" */ |
| 296 | index = 1; |
| 297 | for (i = 1; i < MOD_MAX; i++) { |
| 298 | if (!src) { |
| 299 | mod[i] = ssi; |
| 300 | } else if (!dvc) { |
| 301 | mod[i] = src; |
| 302 | src = NULL; |
| 303 | } else { |
| 304 | mod[i] = dvc; |
| 305 | dvc = NULL; |
| 306 | } |
| 307 | |
| 308 | if (mod[i] == this) |
| 309 | index = i; |
| 310 | |
| 311 | if (mod[i] == ssi) |
| 312 | break; |
| 313 | } |
| 314 | |
| 315 | if (is_play) { |
| 316 | src_mod = mod[index - 1]; |
| 317 | dst_mod = mod[index]; |
| 318 | } else { |
| 319 | src_mod = mod[index]; |
| 320 | dst_mod = mod[index - 1]; |
| 321 | } |
| 322 | |
| 323 | index = 0; |
| 324 | index = _rsnd_dma_of_name(dma_name + index, src_mod); |
| 325 | *(dma_name + index++) = '_'; |
| 326 | index = _rsnd_dma_of_name(dma_name + index, dst_mod); |
| 327 | } |
| 328 | |
| 329 | int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, |
| 330 | int is_play, int id) |
| 331 | { |
| 332 | struct device *dev = rsnd_priv_to_dev(priv); |
| 333 | struct dma_slave_config cfg; |
| 334 | char dma_name[DMA_NAME_SIZE]; |
| 335 | dma_cap_mask_t mask; |
| 336 | int ret; |
| 337 | |
| 338 | if (dma->chan) { |
| 339 | dev_err(dev, "it already has dma channel\n"); |
| 340 | return -EIO; |
| 341 | } |
| 342 | |
| 343 | dma_cap_zero(mask); |
| 344 | dma_cap_set(DMA_SLAVE, mask); |
| 345 | |
| 346 | if (dev->of_node) |
| 347 | rsnd_dma_of_name(dma, is_play, dma_name); |
| 348 | else |
| 349 | snprintf(dma_name, DMA_NAME_SIZE, |
| 350 | is_play ? "tx" : "rx"); |
| 351 | |
| 352 | dev_dbg(dev, "dma name : %s\n", dma_name); |
| 353 | |
| 354 | dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter, |
| 355 | (void *)id, dev, |
| 356 | dma_name); |
| 357 | if (!dma->chan) { |
| 358 | dev_err(dev, "can't get dma channel\n"); |
| 359 | return -EIO; |
| 360 | } |
| 361 | |
| 362 | rsnd_gen_dma_addr(priv, dma, &cfg, is_play, id); |
| 363 | |
| 364 | ret = dmaengine_slave_config(dma->chan, &cfg); |
| 365 | if (ret < 0) |
| 366 | goto rsnd_dma_init_err; |
| 367 | |
| 368 | dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM; |
| 369 | INIT_WORK(&dma->work, rsnd_dma_do_work); |
| 370 | |
| 371 | return 0; |
| 372 | |
| 373 | rsnd_dma_init_err: |
| 374 | rsnd_dma_quit(priv, dma); |
| 375 | |
| 376 | return ret; |
| 377 | } |
| 378 | |
| 379 | void rsnd_dma_quit(struct rsnd_priv *priv, |
| 380 | struct rsnd_dma *dma) |
| 381 | { |
| 382 | if (dma->chan) |
| 383 | dma_release_channel(dma->chan); |
| 384 | |
| 385 | dma->chan = NULL; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * settting function |
| 390 | */ |
| 391 | u32 rsnd_get_adinr(struct rsnd_mod *mod) |
| 392 | { |
| 393 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| 394 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); |
| 395 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
| 396 | struct device *dev = rsnd_priv_to_dev(priv); |
| 397 | u32 adinr = runtime->channels; |
| 398 | |
| 399 | switch (runtime->sample_bits) { |
| 400 | case 16: |
| 401 | adinr |= (8 << 16); |
| 402 | break; |
| 403 | case 32: |
| 404 | adinr |= (0 << 16); |
| 405 | break; |
| 406 | default: |
| 407 | dev_warn(dev, "not supported sample bits\n"); |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | return adinr; |
| 412 | } |
| 413 | |
| 414 | /* |
| 415 | * rsnd_dai functions |
| 416 | */ |
| 417 | #define __rsnd_mod_call(mod, func, rdai...) \ |
| 418 | ({ \ |
| 419 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ |
| 420 | struct device *dev = rsnd_priv_to_dev(priv); \ |
| 421 | dev_dbg(dev, "%s [%d] %s\n", \ |
| 422 | rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \ |
| 423 | (mod)->ops->func(mod, rdai); \ |
| 424 | }) |
| 425 | |
| 426 | #define rsnd_mod_call(mod, func, rdai...) \ |
| 427 | (!(mod) ? -ENODEV : \ |
| 428 | !((mod)->ops->func) ? 0 : \ |
| 429 | __rsnd_mod_call(mod, func, rdai)) |
| 430 | |
| 431 | #define rsnd_dai_call(fn, io, rdai...) \ |
| 432 | ({ \ |
| 433 | struct rsnd_mod *mod; \ |
| 434 | int ret = 0, i; \ |
| 435 | for (i = 0; i < RSND_MOD_MAX; i++) { \ |
| 436 | mod = (io)->mod[i]; \ |
| 437 | if (!mod) \ |
| 438 | continue; \ |
| 439 | ret = rsnd_mod_call(mod, fn, rdai); \ |
| 440 | if (ret < 0) \ |
| 441 | break; \ |
| 442 | } \ |
| 443 | ret; \ |
| 444 | }) |
| 445 | |
| 446 | static int rsnd_dai_connect(struct rsnd_mod *mod, |
| 447 | struct rsnd_dai_stream *io) |
| 448 | { |
| 449 | if (!mod) |
| 450 | return -EIO; |
| 451 | |
| 452 | if (io->mod[mod->type]) { |
| 453 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
| 454 | struct device *dev = rsnd_priv_to_dev(priv); |
| 455 | |
| 456 | dev_err(dev, "%s%d is not empty\n", |
| 457 | rsnd_mod_name(mod), |
| 458 | rsnd_mod_id(mod)); |
| 459 | return -EIO; |
| 460 | } |
| 461 | |
| 462 | io->mod[mod->type] = mod; |
| 463 | mod->io = io; |
| 464 | |
| 465 | return 0; |
| 466 | } |
| 467 | |
| 468 | int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai) |
| 469 | { |
| 470 | int id = rdai - priv->rdai; |
| 471 | |
| 472 | if ((id < 0) || (id >= rsnd_rdai_nr(priv))) |
| 473 | return -EINVAL; |
| 474 | |
| 475 | return id; |
| 476 | } |
| 477 | |
| 478 | struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id) |
| 479 | { |
| 480 | if ((id < 0) || (id >= rsnd_rdai_nr(priv))) |
| 481 | return NULL; |
| 482 | |
| 483 | return priv->rdai + id; |
| 484 | } |
| 485 | |
| 486 | static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) |
| 487 | { |
| 488 | struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); |
| 489 | |
| 490 | return rsnd_dai_get(priv, dai->id); |
| 491 | } |
| 492 | |
| 493 | int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io) |
| 494 | { |
| 495 | return &rdai->playback == io; |
| 496 | } |
| 497 | |
| 498 | /* |
| 499 | * rsnd_soc_dai functions |
| 500 | */ |
| 501 | int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) |
| 502 | { |
| 503 | struct snd_pcm_substream *substream = io->substream; |
| 504 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 505 | int pos = io->byte_pos + additional; |
| 506 | |
| 507 | pos %= (runtime->periods * io->byte_per_period); |
| 508 | |
| 509 | return pos; |
| 510 | } |
| 511 | |
| 512 | void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) |
| 513 | { |
| 514 | io->byte_pos += byte; |
| 515 | |
| 516 | if (io->byte_pos >= io->next_period_byte) { |
| 517 | struct snd_pcm_substream *substream = io->substream; |
| 518 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 519 | |
| 520 | io->period_pos++; |
| 521 | io->next_period_byte += io->byte_per_period; |
| 522 | |
| 523 | if (io->period_pos >= runtime->periods) { |
| 524 | io->byte_pos = 0; |
| 525 | io->period_pos = 0; |
| 526 | io->next_period_byte = io->byte_per_period; |
| 527 | } |
| 528 | |
| 529 | snd_pcm_period_elapsed(substream); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | static int rsnd_dai_stream_init(struct rsnd_dai_stream *io, |
| 534 | struct snd_pcm_substream *substream) |
| 535 | { |
| 536 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 537 | |
| 538 | io->substream = substream; |
| 539 | io->byte_pos = 0; |
| 540 | io->period_pos = 0; |
| 541 | io->byte_per_period = runtime->period_size * |
| 542 | runtime->channels * |
| 543 | samples_to_bytes(runtime, 1); |
| 544 | io->next_period_byte = io->byte_per_period; |
| 545 | |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | static |
| 550 | struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) |
| 551 | { |
| 552 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 553 | |
| 554 | return rtd->cpu_dai; |
| 555 | } |
| 556 | |
| 557 | static |
| 558 | struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, |
| 559 | struct snd_pcm_substream *substream) |
| 560 | { |
| 561 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 562 | return &rdai->playback; |
| 563 | else |
| 564 | return &rdai->capture; |
| 565 | } |
| 566 | |
| 567 | static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, |
| 568 | struct snd_soc_dai *dai) |
| 569 | { |
| 570 | struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); |
| 571 | struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); |
| 572 | struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); |
| 573 | int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io)); |
| 574 | int ret; |
| 575 | unsigned long flags; |
| 576 | |
| 577 | rsnd_lock(priv, flags); |
| 578 | |
| 579 | switch (cmd) { |
| 580 | case SNDRV_PCM_TRIGGER_START: |
| 581 | ret = rsnd_dai_stream_init(io, substream); |
| 582 | if (ret < 0) |
| 583 | goto dai_trigger_end; |
| 584 | |
| 585 | ret = rsnd_platform_call(priv, dai, start, ssi_id); |
| 586 | if (ret < 0) |
| 587 | goto dai_trigger_end; |
| 588 | |
| 589 | ret = rsnd_dai_call(init, io, rdai); |
| 590 | if (ret < 0) |
| 591 | goto dai_trigger_end; |
| 592 | |
| 593 | ret = rsnd_dai_call(start, io, rdai); |
| 594 | if (ret < 0) |
| 595 | goto dai_trigger_end; |
| 596 | break; |
| 597 | case SNDRV_PCM_TRIGGER_STOP: |
| 598 | ret = rsnd_dai_call(stop, io, rdai); |
| 599 | if (ret < 0) |
| 600 | goto dai_trigger_end; |
| 601 | |
| 602 | ret = rsnd_dai_call(quit, io, rdai); |
| 603 | if (ret < 0) |
| 604 | goto dai_trigger_end; |
| 605 | |
| 606 | ret = rsnd_platform_call(priv, dai, stop, ssi_id); |
| 607 | if (ret < 0) |
| 608 | goto dai_trigger_end; |
| 609 | break; |
| 610 | default: |
| 611 | ret = -EINVAL; |
| 612 | } |
| 613 | |
| 614 | dai_trigger_end: |
| 615 | rsnd_unlock(priv, flags); |
| 616 | |
| 617 | return ret; |
| 618 | } |
| 619 | |
| 620 | static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 621 | { |
| 622 | struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); |
| 623 | |
| 624 | /* set master/slave audio interface */ |
| 625 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 626 | case SND_SOC_DAIFMT_CBM_CFM: |
| 627 | rdai->clk_master = 0; |
| 628 | break; |
| 629 | case SND_SOC_DAIFMT_CBS_CFS: |
| 630 | rdai->clk_master = 1; /* codec is slave, cpu is master */ |
| 631 | break; |
| 632 | default: |
| 633 | return -EINVAL; |
| 634 | } |
| 635 | |
| 636 | /* set clock inversion */ |
| 637 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 638 | case SND_SOC_DAIFMT_NB_IF: |
| 639 | rdai->bit_clk_inv = 0; |
| 640 | rdai->frm_clk_inv = 1; |
| 641 | break; |
| 642 | case SND_SOC_DAIFMT_IB_NF: |
| 643 | rdai->bit_clk_inv = 1; |
| 644 | rdai->frm_clk_inv = 0; |
| 645 | break; |
| 646 | case SND_SOC_DAIFMT_IB_IF: |
| 647 | rdai->bit_clk_inv = 1; |
| 648 | rdai->frm_clk_inv = 1; |
| 649 | break; |
| 650 | case SND_SOC_DAIFMT_NB_NF: |
| 651 | default: |
| 652 | rdai->bit_clk_inv = 0; |
| 653 | rdai->frm_clk_inv = 0; |
| 654 | break; |
| 655 | } |
| 656 | |
| 657 | /* set format */ |
| 658 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 659 | case SND_SOC_DAIFMT_I2S: |
| 660 | rdai->sys_delay = 0; |
| 661 | rdai->data_alignment = 0; |
| 662 | break; |
| 663 | case SND_SOC_DAIFMT_LEFT_J: |
| 664 | rdai->sys_delay = 1; |
| 665 | rdai->data_alignment = 0; |
| 666 | break; |
| 667 | case SND_SOC_DAIFMT_RIGHT_J: |
| 668 | rdai->sys_delay = 1; |
| 669 | rdai->data_alignment = 1; |
| 670 | break; |
| 671 | } |
| 672 | |
| 673 | return 0; |
| 674 | } |
| 675 | |
| 676 | static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { |
| 677 | .trigger = rsnd_soc_dai_trigger, |
| 678 | .set_fmt = rsnd_soc_dai_set_fmt, |
| 679 | }; |
| 680 | |
| 681 | #define rsnd_path_parse(priv, io, type) \ |
| 682 | ({ \ |
| 683 | struct rsnd_mod *mod; \ |
| 684 | int ret = 0; \ |
| 685 | int id = -1; \ |
| 686 | \ |
| 687 | if (rsnd_is_enable_path(io, type)) { \ |
| 688 | id = rsnd_info_id(priv, io, type); \ |
| 689 | if (id >= 0) { \ |
| 690 | mod = rsnd_##type##_mod_get(priv, id); \ |
| 691 | ret = rsnd_dai_connect(mod, io); \ |
| 692 | } \ |
| 693 | } \ |
| 694 | ret; \ |
| 695 | }) |
| 696 | |
| 697 | static int rsnd_path_init(struct rsnd_priv *priv, |
| 698 | struct rsnd_dai *rdai, |
| 699 | struct rsnd_dai_stream *io) |
| 700 | { |
| 701 | int ret; |
| 702 | |
| 703 | /* |
| 704 | * Gen1 is created by SRU/SSI, and this SRU is base module of |
| 705 | * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) |
| 706 | * |
| 707 | * Easy image is.. |
| 708 | * Gen1 SRU = Gen2 SCU + SSIU + etc |
| 709 | * |
| 710 | * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is |
| 711 | * using fixed path. |
| 712 | */ |
| 713 | |
| 714 | /* SRC */ |
| 715 | ret = rsnd_path_parse(priv, io, src); |
| 716 | if (ret < 0) |
| 717 | return ret; |
| 718 | |
| 719 | /* SSI */ |
| 720 | ret = rsnd_path_parse(priv, io, ssi); |
| 721 | if (ret < 0) |
| 722 | return ret; |
| 723 | |
| 724 | /* DVC */ |
| 725 | ret = rsnd_path_parse(priv, io, dvc); |
| 726 | if (ret < 0) |
| 727 | return ret; |
| 728 | |
| 729 | return ret; |
| 730 | } |
| 731 | |
| 732 | static void rsnd_of_parse_dai(struct platform_device *pdev, |
| 733 | const struct rsnd_of_data *of_data, |
| 734 | struct rsnd_priv *priv) |
| 735 | { |
| 736 | struct device_node *dai_node, *dai_np; |
| 737 | struct device_node *ssi_node, *ssi_np; |
| 738 | struct device_node *src_node, *src_np; |
| 739 | struct device_node *playback, *capture; |
| 740 | struct rsnd_dai_platform_info *dai_info; |
| 741 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); |
| 742 | struct device *dev = &pdev->dev; |
| 743 | int nr, i; |
| 744 | int dai_i, ssi_i, src_i; |
| 745 | |
| 746 | if (!of_data) |
| 747 | return; |
| 748 | |
| 749 | dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai"); |
| 750 | if (!dai_node) |
| 751 | return; |
| 752 | |
| 753 | nr = of_get_child_count(dai_node); |
| 754 | if (!nr) |
| 755 | return; |
| 756 | |
| 757 | dai_info = devm_kzalloc(dev, |
| 758 | sizeof(struct rsnd_dai_platform_info) * nr, |
| 759 | GFP_KERNEL); |
| 760 | if (!dai_info) { |
| 761 | dev_err(dev, "dai info allocation error\n"); |
| 762 | return; |
| 763 | } |
| 764 | |
| 765 | info->dai_info_nr = nr; |
| 766 | info->dai_info = dai_info; |
| 767 | |
| 768 | ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); |
| 769 | src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src"); |
| 770 | |
| 771 | #define mod_parse(name) \ |
| 772 | if (name##_node) { \ |
| 773 | struct rsnd_##name##_platform_info *name##_info; \ |
| 774 | \ |
| 775 | name##_i = 0; \ |
| 776 | for_each_child_of_node(name##_node, name##_np) { \ |
| 777 | name##_info = info->name##_info + name##_i; \ |
| 778 | \ |
| 779 | if (name##_np == playback) \ |
| 780 | dai_info->playback.name = name##_info; \ |
| 781 | if (name##_np == capture) \ |
| 782 | dai_info->capture.name = name##_info; \ |
| 783 | \ |
| 784 | name##_i++; \ |
| 785 | } \ |
| 786 | } |
| 787 | |
| 788 | /* |
| 789 | * parse all dai |
| 790 | */ |
| 791 | dai_i = 0; |
| 792 | for_each_child_of_node(dai_node, dai_np) { |
| 793 | dai_info = info->dai_info + dai_i; |
| 794 | |
| 795 | for (i = 0;; i++) { |
| 796 | |
| 797 | playback = of_parse_phandle(dai_np, "playback", i); |
| 798 | capture = of_parse_phandle(dai_np, "capture", i); |
| 799 | |
| 800 | if (!playback && !capture) |
| 801 | break; |
| 802 | |
| 803 | mod_parse(ssi); |
| 804 | mod_parse(src); |
| 805 | |
| 806 | if (playback) |
| 807 | of_node_put(playback); |
| 808 | if (capture) |
| 809 | of_node_put(capture); |
| 810 | } |
| 811 | |
| 812 | dai_i++; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | static int rsnd_dai_probe(struct platform_device *pdev, |
| 817 | const struct rsnd_of_data *of_data, |
| 818 | struct rsnd_priv *priv) |
| 819 | { |
| 820 | struct snd_soc_dai_driver *drv; |
| 821 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); |
| 822 | struct rsnd_dai *rdai; |
| 823 | struct rsnd_ssi_platform_info *pmod, *cmod; |
| 824 | struct device *dev = rsnd_priv_to_dev(priv); |
| 825 | int dai_nr; |
| 826 | int i; |
| 827 | |
| 828 | rsnd_of_parse_dai(pdev, of_data, priv); |
| 829 | |
| 830 | dai_nr = info->dai_info_nr; |
| 831 | if (!dai_nr) { |
| 832 | dev_err(dev, "no dai\n"); |
| 833 | return -EIO; |
| 834 | } |
| 835 | |
| 836 | drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL); |
| 837 | rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL); |
| 838 | if (!drv || !rdai) { |
| 839 | dev_err(dev, "dai allocate failed\n"); |
| 840 | return -ENOMEM; |
| 841 | } |
| 842 | |
| 843 | priv->rdai_nr = dai_nr; |
| 844 | priv->daidrv = drv; |
| 845 | priv->rdai = rdai; |
| 846 | |
| 847 | for (i = 0; i < dai_nr; i++) { |
| 848 | rdai[i].info = &info->dai_info[i]; |
| 849 | |
| 850 | pmod = rdai[i].info->playback.ssi; |
| 851 | cmod = rdai[i].info->capture.ssi; |
| 852 | |
| 853 | /* |
| 854 | * init rsnd_dai |
| 855 | */ |
| 856 | snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); |
| 857 | |
| 858 | /* |
| 859 | * init snd_soc_dai_driver |
| 860 | */ |
| 861 | drv[i].name = rdai[i].name; |
| 862 | drv[i].ops = &rsnd_soc_dai_ops; |
| 863 | if (pmod) { |
| 864 | drv[i].playback.rates = RSND_RATES; |
| 865 | drv[i].playback.formats = RSND_FMTS; |
| 866 | drv[i].playback.channels_min = 2; |
| 867 | drv[i].playback.channels_max = 2; |
| 868 | |
| 869 | rdai[i].playback.info = &info->dai_info[i].playback; |
| 870 | rsnd_path_init(priv, &rdai[i], &rdai[i].playback); |
| 871 | } |
| 872 | if (cmod) { |
| 873 | drv[i].capture.rates = RSND_RATES; |
| 874 | drv[i].capture.formats = RSND_FMTS; |
| 875 | drv[i].capture.channels_min = 2; |
| 876 | drv[i].capture.channels_max = 2; |
| 877 | |
| 878 | rdai[i].capture.info = &info->dai_info[i].capture; |
| 879 | rsnd_path_init(priv, &rdai[i], &rdai[i].capture); |
| 880 | } |
| 881 | |
| 882 | dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name, |
| 883 | pmod ? "play" : " -- ", |
| 884 | cmod ? "capture" : " -- "); |
| 885 | } |
| 886 | |
| 887 | return 0; |
| 888 | } |
| 889 | |
| 890 | /* |
| 891 | * pcm ops |
| 892 | */ |
| 893 | static struct snd_pcm_hardware rsnd_pcm_hardware = { |
| 894 | .info = SNDRV_PCM_INFO_INTERLEAVED | |
| 895 | SNDRV_PCM_INFO_MMAP | |
| 896 | SNDRV_PCM_INFO_MMAP_VALID | |
| 897 | SNDRV_PCM_INFO_PAUSE, |
| 898 | .buffer_bytes_max = 64 * 1024, |
| 899 | .period_bytes_min = 32, |
| 900 | .period_bytes_max = 8192, |
| 901 | .periods_min = 1, |
| 902 | .periods_max = 32, |
| 903 | .fifo_size = 256, |
| 904 | }; |
| 905 | |
| 906 | static int rsnd_pcm_open(struct snd_pcm_substream *substream) |
| 907 | { |
| 908 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 909 | int ret = 0; |
| 910 | |
| 911 | snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); |
| 912 | |
| 913 | ret = snd_pcm_hw_constraint_integer(runtime, |
| 914 | SNDRV_PCM_HW_PARAM_PERIODS); |
| 915 | |
| 916 | return ret; |
| 917 | } |
| 918 | |
| 919 | static int rsnd_hw_params(struct snd_pcm_substream *substream, |
| 920 | struct snd_pcm_hw_params *hw_params) |
| 921 | { |
| 922 | return snd_pcm_lib_malloc_pages(substream, |
| 923 | params_buffer_bytes(hw_params)); |
| 924 | } |
| 925 | |
| 926 | static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) |
| 927 | { |
| 928 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 929 | struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); |
| 930 | struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); |
| 931 | struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); |
| 932 | |
| 933 | return bytes_to_frames(runtime, io->byte_pos); |
| 934 | } |
| 935 | |
| 936 | static struct snd_pcm_ops rsnd_pcm_ops = { |
| 937 | .open = rsnd_pcm_open, |
| 938 | .ioctl = snd_pcm_lib_ioctl, |
| 939 | .hw_params = rsnd_hw_params, |
| 940 | .hw_free = snd_pcm_lib_free_pages, |
| 941 | .pointer = rsnd_pointer, |
| 942 | }; |
| 943 | |
| 944 | /* |
| 945 | * snd_soc_platform |
| 946 | */ |
| 947 | |
| 948 | #define PREALLOC_BUFFER (32 * 1024) |
| 949 | #define PREALLOC_BUFFER_MAX (32 * 1024) |
| 950 | |
| 951 | static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) |
| 952 | { |
| 953 | struct rsnd_priv *priv = snd_soc_dai_get_drvdata(rtd->cpu_dai); |
| 954 | struct rsnd_dai *rdai; |
| 955 | int i, ret; |
| 956 | |
| 957 | for_each_rsnd_dai(rdai, priv, i) { |
| 958 | ret = rsnd_dai_call(pcm_new, &rdai->playback, rdai, rtd); |
| 959 | if (ret) |
| 960 | return ret; |
| 961 | |
| 962 | ret = rsnd_dai_call(pcm_new, &rdai->capture, rdai, rtd); |
| 963 | if (ret) |
| 964 | return ret; |
| 965 | } |
| 966 | |
| 967 | return snd_pcm_lib_preallocate_pages_for_all( |
| 968 | rtd->pcm, |
| 969 | SNDRV_DMA_TYPE_DEV, |
| 970 | rtd->card->snd_card->dev, |
| 971 | PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); |
| 972 | } |
| 973 | |
| 974 | static void rsnd_pcm_free(struct snd_pcm *pcm) |
| 975 | { |
| 976 | snd_pcm_lib_preallocate_free_for_all(pcm); |
| 977 | } |
| 978 | |
| 979 | static struct snd_soc_platform_driver rsnd_soc_platform = { |
| 980 | .ops = &rsnd_pcm_ops, |
| 981 | .pcm_new = rsnd_pcm_new, |
| 982 | .pcm_free = rsnd_pcm_free, |
| 983 | }; |
| 984 | |
| 985 | static const struct snd_soc_component_driver rsnd_soc_component = { |
| 986 | .name = "rsnd", |
| 987 | }; |
| 988 | |
| 989 | /* |
| 990 | * rsnd probe |
| 991 | */ |
| 992 | static int rsnd_probe(struct platform_device *pdev) |
| 993 | { |
| 994 | struct rcar_snd_info *info; |
| 995 | struct rsnd_priv *priv; |
| 996 | struct device *dev = &pdev->dev; |
| 997 | struct rsnd_dai *rdai; |
| 998 | const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev); |
| 999 | const struct rsnd_of_data *of_data; |
| 1000 | int (*probe_func[])(struct platform_device *pdev, |
| 1001 | const struct rsnd_of_data *of_data, |
| 1002 | struct rsnd_priv *priv) = { |
| 1003 | rsnd_gen_probe, |
| 1004 | rsnd_ssi_probe, |
| 1005 | rsnd_src_probe, |
| 1006 | rsnd_dvc_probe, |
| 1007 | rsnd_adg_probe, |
| 1008 | rsnd_dai_probe, |
| 1009 | }; |
| 1010 | int ret, i; |
| 1011 | |
| 1012 | info = NULL; |
| 1013 | of_data = NULL; |
| 1014 | if (of_id) { |
| 1015 | info = devm_kzalloc(&pdev->dev, |
| 1016 | sizeof(struct rcar_snd_info), GFP_KERNEL); |
| 1017 | of_data = of_id->data; |
| 1018 | } else { |
| 1019 | info = pdev->dev.platform_data; |
| 1020 | } |
| 1021 | |
| 1022 | if (!info) { |
| 1023 | dev_err(dev, "driver needs R-Car sound information\n"); |
| 1024 | return -ENODEV; |
| 1025 | } |
| 1026 | |
| 1027 | /* |
| 1028 | * init priv data |
| 1029 | */ |
| 1030 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
| 1031 | if (!priv) { |
| 1032 | dev_err(dev, "priv allocate failed\n"); |
| 1033 | return -ENODEV; |
| 1034 | } |
| 1035 | |
| 1036 | priv->pdev = pdev; |
| 1037 | priv->info = info; |
| 1038 | spin_lock_init(&priv->lock); |
| 1039 | |
| 1040 | /* |
| 1041 | * init each module |
| 1042 | */ |
| 1043 | for (i = 0; i < ARRAY_SIZE(probe_func); i++) { |
| 1044 | ret = probe_func[i](pdev, of_data, priv); |
| 1045 | if (ret) |
| 1046 | return ret; |
| 1047 | } |
| 1048 | |
| 1049 | for_each_rsnd_dai(rdai, priv, i) { |
| 1050 | ret = rsnd_dai_call(probe, &rdai->playback, rdai); |
| 1051 | if (ret) |
| 1052 | return ret; |
| 1053 | |
| 1054 | ret = rsnd_dai_call(probe, &rdai->capture, rdai); |
| 1055 | if (ret) |
| 1056 | return ret; |
| 1057 | } |
| 1058 | |
| 1059 | /* |
| 1060 | * asoc register |
| 1061 | */ |
| 1062 | ret = snd_soc_register_platform(dev, &rsnd_soc_platform); |
| 1063 | if (ret < 0) { |
| 1064 | dev_err(dev, "cannot snd soc register\n"); |
| 1065 | return ret; |
| 1066 | } |
| 1067 | |
| 1068 | ret = snd_soc_register_component(dev, &rsnd_soc_component, |
| 1069 | priv->daidrv, rsnd_rdai_nr(priv)); |
| 1070 | if (ret < 0) { |
| 1071 | dev_err(dev, "cannot snd dai register\n"); |
| 1072 | goto exit_snd_soc; |
| 1073 | } |
| 1074 | |
| 1075 | dev_set_drvdata(dev, priv); |
| 1076 | |
| 1077 | pm_runtime_enable(dev); |
| 1078 | |
| 1079 | dev_info(dev, "probed\n"); |
| 1080 | return ret; |
| 1081 | |
| 1082 | exit_snd_soc: |
| 1083 | snd_soc_unregister_platform(dev); |
| 1084 | |
| 1085 | return ret; |
| 1086 | } |
| 1087 | |
| 1088 | static int rsnd_remove(struct platform_device *pdev) |
| 1089 | { |
| 1090 | struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); |
| 1091 | struct rsnd_dai *rdai; |
| 1092 | int ret, i; |
| 1093 | |
| 1094 | pm_runtime_disable(&pdev->dev); |
| 1095 | |
| 1096 | for_each_rsnd_dai(rdai, priv, i) { |
| 1097 | ret = rsnd_dai_call(remove, &rdai->playback, rdai); |
| 1098 | if (ret) |
| 1099 | return ret; |
| 1100 | |
| 1101 | ret = rsnd_dai_call(remove, &rdai->capture, rdai); |
| 1102 | if (ret) |
| 1103 | return ret; |
| 1104 | } |
| 1105 | |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | static struct platform_driver rsnd_driver = { |
| 1110 | .driver = { |
| 1111 | .name = "rcar_sound", |
| 1112 | .of_match_table = rsnd_of_match, |
| 1113 | }, |
| 1114 | .probe = rsnd_probe, |
| 1115 | .remove = rsnd_remove, |
| 1116 | }; |
| 1117 | module_platform_driver(rsnd_driver); |
| 1118 | |
| 1119 | MODULE_LICENSE("GPL"); |
| 1120 | MODULE_DESCRIPTION("Renesas R-Car audio driver"); |
| 1121 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |
| 1122 | MODULE_ALIAS("platform:rcar-pcm-audio"); |