1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> 9 // 10 // PCM Layer, interface between ALSA and IPC. 11 // 12 13 #include <linux/pm_runtime.h> 14 #include <sound/pcm_params.h> 15 #include <sound/sof.h> 16 #include "sof-priv.h" 17 #include "sof-audio.h" 18 #include "ops.h" 19 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) 20 #include "compress.h" 21 #endif 22 23 /* Create DMA buffer page table for DSP */ 24 static int create_page_table(struct snd_soc_component *component, 25 struct snd_pcm_substream *substream, 26 unsigned char *dma_area, size_t size) 27 { 28 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 29 struct snd_sof_pcm *spcm; 30 struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream); 31 int stream = substream->stream; 32 33 spcm = snd_sof_find_spcm_dai(component, rtd); 34 if (!spcm) 35 return -EINVAL; 36 37 return snd_sof_create_page_table(component->dev, dmab, 38 spcm->stream[stream].page_table.area, size); 39 } 40 41 static int sof_pcm_dsp_params(struct snd_sof_pcm *spcm, struct snd_pcm_substream *substream, 42 const struct sof_ipc_pcm_params_reply *reply) 43 { 44 struct snd_soc_component *scomp = spcm->scomp; 45 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); 46 47 /* validate offset */ 48 int ret = snd_sof_ipc_pcm_params(sdev, substream, reply); 49 50 if (ret < 0) 51 dev_err(scomp->dev, "error: got wrong reply for PCM %d\n", 52 spcm->pcm.pcm_id); 53 54 return ret; 55 } 56 57 /* 58 * sof pcm period elapse work 59 */ 60 void snd_sof_pcm_period_elapsed_work(struct work_struct *work) 61 { 62 struct snd_sof_pcm_stream *sps = 63 container_of(work, struct snd_sof_pcm_stream, 64 period_elapsed_work); 65 66 snd_pcm_period_elapsed(sps->substream); 67 } 68 69 /* 70 * sof pcm period elapse, this could be called at irq thread context. 71 */ 72 void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) 73 { 74 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 75 struct snd_soc_component *component = 76 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 77 struct snd_sof_pcm *spcm; 78 79 spcm = snd_sof_find_spcm_dai(component, rtd); 80 if (!spcm) { 81 dev_err(component->dev, 82 "error: period elapsed for unknown stream!\n"); 83 return; 84 } 85 86 /* 87 * snd_pcm_period_elapsed() can be called in interrupt context 88 * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), 89 * when the PCM is done draining or xrun happened, a STOP IPC will 90 * then be sent and this IPC will hit IPC timeout. 91 * To avoid sending IPC before the previous IPC is handled, we 92 * schedule delayed work here to call the snd_pcm_period_elapsed(). 93 */ 94 schedule_work(&spcm->stream[substream->stream].period_elapsed_work); 95 } 96 EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); 97 98 static int sof_pcm_dsp_pcm_free(struct snd_pcm_substream *substream, 99 struct snd_sof_dev *sdev, 100 struct snd_sof_pcm *spcm) 101 { 102 struct sof_ipc_stream stream; 103 struct sof_ipc_reply reply; 104 int ret; 105 106 stream.hdr.size = sizeof(stream); 107 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; 108 stream.comp_id = spcm->stream[substream->stream].comp_id; 109 110 /* send IPC to the DSP */ 111 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 112 sizeof(stream), &reply, sizeof(reply)); 113 if (!ret) 114 spcm->prepared[substream->stream] = false; 115 116 return ret; 117 } 118 119 static int sof_pcm_hw_params(struct snd_soc_component *component, 120 struct snd_pcm_substream *substream, 121 struct snd_pcm_hw_params *params) 122 { 123 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 124 struct snd_pcm_runtime *runtime = substream->runtime; 125 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 126 struct snd_sof_pcm *spcm; 127 struct sof_ipc_pcm_params pcm; 128 struct sof_ipc_pcm_params_reply ipc_params_reply; 129 int ret; 130 131 /* nothing to do for BE */ 132 if (rtd->dai_link->no_pcm) 133 return 0; 134 135 spcm = snd_sof_find_spcm_dai(component, rtd); 136 if (!spcm) 137 return -EINVAL; 138 139 /* 140 * Handle repeated calls to hw_params() without free_pcm() in 141 * between. At least ALSA OSS emulation depends on this. 142 */ 143 if (spcm->prepared[substream->stream]) { 144 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); 145 if (ret < 0) 146 return ret; 147 } 148 149 dev_dbg(component->dev, "pcm: hw params stream %d dir %d\n", 150 spcm->pcm.pcm_id, substream->stream); 151 152 memset(&pcm, 0, sizeof(pcm)); 153 154 /* create compressed page table for audio firmware */ 155 if (runtime->buffer_changed) { 156 ret = create_page_table(component, substream, runtime->dma_area, 157 runtime->dma_bytes); 158 if (ret < 0) 159 return ret; 160 } 161 162 /* number of pages should be rounded up */ 163 pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes); 164 165 /* set IPC PCM parameters */ 166 pcm.hdr.size = sizeof(pcm); 167 pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; 168 pcm.comp_id = spcm->stream[substream->stream].comp_id; 169 pcm.params.hdr.size = sizeof(pcm.params); 170 pcm.params.buffer.phy_addr = 171 spcm->stream[substream->stream].page_table.addr; 172 pcm.params.buffer.size = runtime->dma_bytes; 173 pcm.params.direction = substream->stream; 174 pcm.params.sample_valid_bytes = params_width(params) >> 3; 175 pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; 176 pcm.params.rate = params_rate(params); 177 pcm.params.channels = params_channels(params); 178 pcm.params.host_period_bytes = params_period_bytes(params); 179 180 /* container size */ 181 ret = snd_pcm_format_physical_width(params_format(params)); 182 if (ret < 0) 183 return ret; 184 pcm.params.sample_container_bytes = ret >> 3; 185 186 /* format */ 187 switch (params_format(params)) { 188 case SNDRV_PCM_FORMAT_S16: 189 pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE; 190 break; 191 case SNDRV_PCM_FORMAT_S24: 192 pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE; 193 break; 194 case SNDRV_PCM_FORMAT_S32: 195 pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE; 196 break; 197 case SNDRV_PCM_FORMAT_FLOAT: 198 pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT; 199 break; 200 default: 201 return -EINVAL; 202 } 203 204 /* firmware already configured host stream */ 205 ret = snd_sof_pcm_platform_hw_params(sdev, 206 substream, 207 params, 208 &pcm.params); 209 if (ret < 0) { 210 dev_err(component->dev, "error: platform hw params failed\n"); 211 return ret; 212 } 213 214 dev_dbg(component->dev, "stream_tag %d", pcm.params.stream_tag); 215 216 /* send IPC to the DSP */ 217 ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm), 218 &ipc_params_reply, sizeof(ipc_params_reply)); 219 if (ret < 0) { 220 dev_err(component->dev, "error: hw params ipc failed for stream %d\n", 221 pcm.params.stream_tag); 222 return ret; 223 } 224 225 ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply); 226 if (ret < 0) 227 return ret; 228 229 spcm->prepared[substream->stream] = true; 230 231 /* save pcm hw_params */ 232 memcpy(&spcm->params[substream->stream], params, sizeof(*params)); 233 234 return ret; 235 } 236 237 static int sof_pcm_hw_free(struct snd_soc_component *component, 238 struct snd_pcm_substream *substream) 239 { 240 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 241 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 242 struct snd_sof_pcm *spcm; 243 int ret, err = 0; 244 245 /* nothing to do for BE */ 246 if (rtd->dai_link->no_pcm) 247 return 0; 248 249 spcm = snd_sof_find_spcm_dai(component, rtd); 250 if (!spcm) 251 return -EINVAL; 252 253 dev_dbg(component->dev, "pcm: free stream %d dir %d\n", 254 spcm->pcm.pcm_id, substream->stream); 255 256 if (spcm->prepared[substream->stream]) { 257 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); 258 if (ret < 0) 259 err = ret; 260 } 261 262 cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); 263 264 ret = snd_sof_pcm_platform_hw_free(sdev, substream); 265 if (ret < 0) { 266 dev_err(component->dev, "error: platform hw free failed\n"); 267 err = ret; 268 } 269 270 return err; 271 } 272 273 static int sof_pcm_prepare(struct snd_soc_component *component, 274 struct snd_pcm_substream *substream) 275 { 276 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 277 struct snd_sof_pcm *spcm; 278 int ret; 279 280 /* nothing to do for BE */ 281 if (rtd->dai_link->no_pcm) 282 return 0; 283 284 spcm = snd_sof_find_spcm_dai(component, rtd); 285 if (!spcm) 286 return -EINVAL; 287 288 if (spcm->prepared[substream->stream]) 289 return 0; 290 291 dev_dbg(component->dev, "pcm: prepare stream %d dir %d\n", 292 spcm->pcm.pcm_id, substream->stream); 293 294 /* set hw_params */ 295 ret = sof_pcm_hw_params(component, 296 substream, &spcm->params[substream->stream]); 297 if (ret < 0) { 298 dev_err(component->dev, 299 "error: set pcm hw_params after resume\n"); 300 return ret; 301 } 302 303 return 0; 304 } 305 306 /* 307 * FE dai link trigger actions are always executed in non-atomic context because 308 * they involve IPC's. 309 */ 310 static int sof_pcm_trigger(struct snd_soc_component *component, 311 struct snd_pcm_substream *substream, int cmd) 312 { 313 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 314 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 315 struct snd_sof_pcm *spcm; 316 struct sof_ipc_stream stream; 317 struct sof_ipc_reply reply; 318 bool reset_hw_params = false; 319 bool ipc_first = false; 320 int ret; 321 322 /* nothing to do for BE */ 323 if (rtd->dai_link->no_pcm) 324 return 0; 325 326 spcm = snd_sof_find_spcm_dai(component, rtd); 327 if (!spcm) 328 return -EINVAL; 329 330 dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n", 331 spcm->pcm.pcm_id, substream->stream, cmd); 332 333 stream.hdr.size = sizeof(stream); 334 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; 335 stream.comp_id = spcm->stream[substream->stream].comp_id; 336 337 switch (cmd) { 338 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 339 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; 340 ipc_first = true; 341 break; 342 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 343 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; 344 break; 345 case SNDRV_PCM_TRIGGER_RESUME: 346 if (spcm->stream[substream->stream].suspend_ignored) { 347 /* 348 * this case will be triggered when INFO_RESUME is 349 * supported, no need to resume streams that remained 350 * enabled in D0ix. 351 */ 352 spcm->stream[substream->stream].suspend_ignored = false; 353 return 0; 354 } 355 356 /* set up hw_params */ 357 ret = sof_pcm_prepare(component, substream); 358 if (ret < 0) { 359 dev_err(component->dev, 360 "error: failed to set up hw_params upon resume\n"); 361 return ret; 362 } 363 364 fallthrough; 365 case SNDRV_PCM_TRIGGER_START: 366 if (spcm->stream[substream->stream].suspend_ignored) { 367 /* 368 * This case will be triggered when INFO_RESUME is 369 * not supported, no need to re-start streams that 370 * remained enabled in D0ix. 371 */ 372 spcm->stream[substream->stream].suspend_ignored = false; 373 return 0; 374 } 375 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; 376 break; 377 case SNDRV_PCM_TRIGGER_SUSPEND: 378 if (sdev->system_suspend_target == SOF_SUSPEND_S0IX && 379 spcm->stream[substream->stream].d0i3_compatible) { 380 /* 381 * trap the event, not sending trigger stop to 382 * prevent the FW pipelines from being stopped, 383 * and mark the flag to ignore the upcoming DAPM 384 * PM events. 385 */ 386 spcm->stream[substream->stream].suspend_ignored = true; 387 return 0; 388 } 389 fallthrough; 390 case SNDRV_PCM_TRIGGER_STOP: 391 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; 392 ipc_first = true; 393 reset_hw_params = true; 394 break; 395 default: 396 dev_err(component->dev, "error: unhandled trigger cmd %d\n", 397 cmd); 398 return -EINVAL; 399 } 400 401 /* 402 * DMA and IPC sequence is different for start and stop. Need to send 403 * STOP IPC before stop DMA 404 */ 405 if (!ipc_first) 406 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 407 408 /* send IPC to the DSP */ 409 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 410 sizeof(stream), &reply, sizeof(reply)); 411 412 /* need to STOP DMA even if STOP IPC failed */ 413 if (ipc_first) 414 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 415 416 /* free PCM if reset_hw_params is set and the STOP IPC is successful */ 417 if (!ret && reset_hw_params) 418 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); 419 420 return ret; 421 } 422 423 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, 424 struct snd_pcm_substream *substream) 425 { 426 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 427 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 428 struct snd_sof_pcm *spcm; 429 snd_pcm_uframes_t host, dai; 430 431 /* nothing to do for BE */ 432 if (rtd->dai_link->no_pcm) 433 return 0; 434 435 /* use dsp ops pointer callback directly if set */ 436 if (sof_ops(sdev)->pcm_pointer) 437 return sof_ops(sdev)->pcm_pointer(sdev, substream); 438 439 spcm = snd_sof_find_spcm_dai(component, rtd); 440 if (!spcm) 441 return -EINVAL; 442 443 /* read position from DSP */ 444 host = bytes_to_frames(substream->runtime, 445 spcm->stream[substream->stream].posn.host_posn); 446 dai = bytes_to_frames(substream->runtime, 447 spcm->stream[substream->stream].posn.dai_posn); 448 449 dev_vdbg(component->dev, 450 "PCM: stream %d dir %d DMA position %lu DAI position %lu\n", 451 spcm->pcm.pcm_id, substream->stream, host, dai); 452 453 return host; 454 } 455 456 static int sof_pcm_open(struct snd_soc_component *component, 457 struct snd_pcm_substream *substream) 458 { 459 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 460 struct snd_pcm_runtime *runtime = substream->runtime; 461 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 462 const struct snd_sof_dsp_ops *ops = sof_ops(sdev); 463 struct snd_sof_pcm *spcm; 464 struct snd_soc_tplg_stream_caps *caps; 465 int ret; 466 467 /* nothing to do for BE */ 468 if (rtd->dai_link->no_pcm) 469 return 0; 470 471 spcm = snd_sof_find_spcm_dai(component, rtd); 472 if (!spcm) 473 return -EINVAL; 474 475 dev_dbg(component->dev, "pcm: open stream %d dir %d\n", 476 spcm->pcm.pcm_id, substream->stream); 477 478 479 caps = &spcm->pcm.caps[substream->stream]; 480 481 /* set runtime config */ 482 runtime->hw.info = ops->hw_info; /* platform-specific */ 483 484 /* set any runtime constraints based on topology */ 485 runtime->hw.formats = le64_to_cpu(caps->formats); 486 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 487 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 488 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 489 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 490 491 /* 492 * caps->buffer_size_min is not used since the 493 * snd_pcm_hardware structure only defines buffer_bytes_max 494 */ 495 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 496 497 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 498 runtime->hw.period_bytes_min, 499 runtime->hw.period_bytes_max); 500 dev_dbg(component->dev, "period count %d max %d\n", 501 runtime->hw.periods_min, 502 runtime->hw.periods_max); 503 dev_dbg(component->dev, "buffer max %zd bytes\n", 504 runtime->hw.buffer_bytes_max); 505 506 /* set wait time - TODO: come from topology */ 507 substream->wait_time = 500; 508 509 spcm->stream[substream->stream].posn.host_posn = 0; 510 spcm->stream[substream->stream].posn.dai_posn = 0; 511 spcm->stream[substream->stream].substream = substream; 512 spcm->prepared[substream->stream] = false; 513 514 ret = snd_sof_pcm_platform_open(sdev, substream); 515 if (ret < 0) 516 dev_err(component->dev, "error: pcm open failed %d\n", ret); 517 518 return ret; 519 } 520 521 static int sof_pcm_close(struct snd_soc_component *component, 522 struct snd_pcm_substream *substream) 523 { 524 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 525 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 526 struct snd_sof_pcm *spcm; 527 int err; 528 529 /* nothing to do for BE */ 530 if (rtd->dai_link->no_pcm) 531 return 0; 532 533 spcm = snd_sof_find_spcm_dai(component, rtd); 534 if (!spcm) 535 return -EINVAL; 536 537 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 538 spcm->pcm.pcm_id, substream->stream); 539 540 err = snd_sof_pcm_platform_close(sdev, substream); 541 if (err < 0) { 542 dev_err(component->dev, "error: pcm close failed %d\n", 543 err); 544 /* 545 * keep going, no point in preventing the close 546 * from happening 547 */ 548 } 549 550 return 0; 551 } 552 553 /* 554 * Pre-allocate playback/capture audio buffer pages. 555 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 556 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 557 */ 558 static int sof_pcm_new(struct snd_soc_component *component, 559 struct snd_soc_pcm_runtime *rtd) 560 { 561 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 562 struct snd_sof_pcm *spcm; 563 struct snd_pcm *pcm = rtd->pcm; 564 struct snd_soc_tplg_stream_caps *caps; 565 int stream = SNDRV_PCM_STREAM_PLAYBACK; 566 567 /* find SOF PCM for this RTD */ 568 spcm = snd_sof_find_spcm_dai(component, rtd); 569 if (!spcm) { 570 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 571 rtd->dai_link->id); 572 return 0; 573 } 574 575 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 576 577 /* do we need to pre-allocate playback audio buffer pages */ 578 if (!spcm->pcm.playback) 579 goto capture; 580 581 caps = &spcm->pcm.caps[stream]; 582 583 /* pre-allocate playback audio buffer pages */ 584 dev_dbg(component->dev, 585 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 586 caps->name, caps->buffer_size_min, caps->buffer_size_max); 587 588 if (!pcm->streams[stream].substream) { 589 dev_err(component->dev, "error: NULL playback substream!\n"); 590 return -EINVAL; 591 } 592 593 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 594 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 595 0, le32_to_cpu(caps->buffer_size_max)); 596 capture: 597 stream = SNDRV_PCM_STREAM_CAPTURE; 598 599 /* do we need to pre-allocate capture audio buffer pages */ 600 if (!spcm->pcm.capture) 601 return 0; 602 603 caps = &spcm->pcm.caps[stream]; 604 605 /* pre-allocate capture audio buffer pages */ 606 dev_dbg(component->dev, 607 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 608 caps->name, caps->buffer_size_min, caps->buffer_size_max); 609 610 if (!pcm->streams[stream].substream) { 611 dev_err(component->dev, "error: NULL capture substream!\n"); 612 return -EINVAL; 613 } 614 615 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 616 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 617 0, le32_to_cpu(caps->buffer_size_max)); 618 619 return 0; 620 } 621 622 static void ssp_dai_config_pcm_params_match(struct snd_sof_dev *sdev, const char *link_name, 623 struct snd_pcm_hw_params *params) 624 { 625 struct sof_ipc_dai_config *config; 626 struct snd_sof_dai *dai; 627 int i; 628 629 /* 630 * Search for all matching DAIs as we can have both playback and capture DAI 631 * associated with the same link. 632 */ 633 list_for_each_entry(dai, &sdev->dai_list, list) { 634 if (!dai->name || strcmp(link_name, dai->name)) 635 continue; 636 for (i = 0; i < dai->number_configs; i++) { 637 config = &dai->dai_config[i]; 638 if (config->ssp.fsync_rate == params_rate(params)) { 639 dev_dbg(sdev->dev, "DAI config %d matches pcm hw params\n", i); 640 dai->current_config = i; 641 break; 642 } 643 } 644 } 645 } 646 647 /* fixup the BE DAI link to match any values from topology */ 648 int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) 649 { 650 struct snd_interval *rate = hw_param_interval(params, 651 SNDRV_PCM_HW_PARAM_RATE); 652 struct snd_interval *channels = hw_param_interval(params, 653 SNDRV_PCM_HW_PARAM_CHANNELS); 654 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 655 struct snd_soc_component *component = 656 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 657 struct snd_sof_dai *dai = 658 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 659 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 660 struct snd_soc_dpcm *dpcm; 661 662 /* no topology exists for this BE, try a common configuration */ 663 if (!dai) { 664 dev_warn(component->dev, 665 "warning: no topology found for BE DAI %s config\n", 666 rtd->dai_link->name); 667 668 /* set 48k, stereo, 16bits by default */ 669 rate->min = 48000; 670 rate->max = 48000; 671 672 channels->min = 2; 673 channels->max = 2; 674 675 snd_mask_none(fmt); 676 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 677 678 return 0; 679 } 680 681 /* read format from topology */ 682 snd_mask_none(fmt); 683 684 switch (dai->comp_dai.config.frame_fmt) { 685 case SOF_IPC_FRAME_S16_LE: 686 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 687 break; 688 case SOF_IPC_FRAME_S24_4LE: 689 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 690 break; 691 case SOF_IPC_FRAME_S32_LE: 692 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE); 693 break; 694 default: 695 dev_err(component->dev, "error: No available DAI format!\n"); 696 return -EINVAL; 697 } 698 699 /* read rate and channels from topology */ 700 switch (dai->dai_config->type) { 701 case SOF_DAI_INTEL_SSP: 702 /* search for config to pcm params match, if not found use default */ 703 ssp_dai_config_pcm_params_match(sdev, (char *)rtd->dai_link->name, params); 704 705 rate->min = dai->dai_config[dai->current_config].ssp.fsync_rate; 706 rate->max = dai->dai_config[dai->current_config].ssp.fsync_rate; 707 channels->min = dai->dai_config[dai->current_config].ssp.tdm_slots; 708 channels->max = dai->dai_config[dai->current_config].ssp.tdm_slots; 709 710 dev_dbg(component->dev, 711 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 712 dev_dbg(component->dev, 713 "channels_min: %d channels_max: %d\n", 714 channels->min, channels->max); 715 716 break; 717 case SOF_DAI_INTEL_DMIC: 718 /* DMIC only supports 16 or 32 bit formats */ 719 if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) { 720 dev_err(component->dev, 721 "error: invalid fmt %d for DAI type %d\n", 722 dai->comp_dai.config.frame_fmt, 723 dai->dai_config->type); 724 } 725 break; 726 case SOF_DAI_INTEL_HDA: 727 /* 728 * HDAudio does not follow the default trigger 729 * sequence due to firmware implementation 730 */ 731 for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { 732 struct snd_soc_pcm_runtime *fe = dpcm->fe; 733 734 fe->dai_link->trigger[SNDRV_PCM_STREAM_PLAYBACK] = 735 SND_SOC_DPCM_TRIGGER_POST; 736 } 737 break; 738 case SOF_DAI_INTEL_ALH: 739 /* 740 * Dai could run with different channel count compared with 741 * front end, so get dai channel count from topology 742 */ 743 channels->min = dai->dai_config->alh.channels; 744 channels->max = dai->dai_config->alh.channels; 745 break; 746 case SOF_DAI_IMX_ESAI: 747 rate->min = dai->dai_config->esai.fsync_rate; 748 rate->max = dai->dai_config->esai.fsync_rate; 749 channels->min = dai->dai_config->esai.tdm_slots; 750 channels->max = dai->dai_config->esai.tdm_slots; 751 752 dev_dbg(component->dev, 753 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 754 dev_dbg(component->dev, 755 "channels_min: %d channels_max: %d\n", 756 channels->min, channels->max); 757 break; 758 case SOF_DAI_IMX_SAI: 759 rate->min = dai->dai_config->sai.fsync_rate; 760 rate->max = dai->dai_config->sai.fsync_rate; 761 channels->min = dai->dai_config->sai.tdm_slots; 762 channels->max = dai->dai_config->sai.tdm_slots; 763 764 dev_dbg(component->dev, 765 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 766 dev_dbg(component->dev, 767 "channels_min: %d channels_max: %d\n", 768 channels->min, channels->max); 769 break; 770 default: 771 dev_err(component->dev, "error: invalid DAI type %d\n", 772 dai->dai_config->type); 773 break; 774 } 775 776 return 0; 777 } 778 EXPORT_SYMBOL(sof_pcm_dai_link_fixup); 779 780 static int sof_pcm_probe(struct snd_soc_component *component) 781 { 782 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 783 struct snd_sof_pdata *plat_data = sdev->pdata; 784 const char *tplg_filename; 785 int ret; 786 787 /* load the default topology */ 788 sdev->component = component; 789 790 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 791 "%s/%s", 792 plat_data->tplg_filename_prefix, 793 plat_data->tplg_filename); 794 if (!tplg_filename) 795 return -ENOMEM; 796 797 ret = snd_sof_load_topology(component, tplg_filename); 798 if (ret < 0) { 799 dev_err(component->dev, "error: failed to load DSP topology %d\n", 800 ret); 801 return ret; 802 } 803 804 return ret; 805 } 806 807 static void sof_pcm_remove(struct snd_soc_component *component) 808 { 809 /* remove topology */ 810 snd_soc_tplg_component_remove(component); 811 } 812 813 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 814 { 815 struct snd_soc_component_driver *pd = &sdev->plat_drv; 816 struct snd_sof_pdata *plat_data = sdev->pdata; 817 const char *drv_name; 818 819 drv_name = plat_data->machine->drv_name; 820 821 pd->name = "sof-audio-component"; 822 pd->probe = sof_pcm_probe; 823 pd->remove = sof_pcm_remove; 824 pd->open = sof_pcm_open; 825 pd->close = sof_pcm_close; 826 pd->hw_params = sof_pcm_hw_params; 827 pd->prepare = sof_pcm_prepare; 828 pd->hw_free = sof_pcm_hw_free; 829 pd->trigger = sof_pcm_trigger; 830 pd->pointer = sof_pcm_pointer; 831 832 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 833 pd->compress_ops = &sof_compressed_ops; 834 #endif 835 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) 836 /* override cops when probe support is enabled */ 837 pd->compress_ops = &sof_probe_compressed_ops; 838 #endif 839 pd->pcm_construct = sof_pcm_new; 840 pd->ignore_machine = drv_name; 841 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 842 pd->be_pcm_base = SOF_BE_PCM_BASE; 843 pd->use_dai_pcm_id = true; 844 pd->topology_name_prefix = "sof"; 845 846 /* increment module refcount when a pcm is opened */ 847 pd->module_get_upon_open = 1; 848 } 849