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 */ 24static 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 41static 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 */ 60void 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 */ 72void 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} 96EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); 97 98static 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 119static 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 237static 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 273static 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 */ 310static 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 423static 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 456static 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 any runtime constraints based on topology */ 482 snd_pcm_hw_constraint_step(substream->runtime, 0, 483 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 484 le32_to_cpu(caps->period_size_min)); 485 snd_pcm_hw_constraint_step(substream->runtime, 0, 486 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 487 le32_to_cpu(caps->period_size_min)); 488 489 /* set runtime config */ 490 runtime->hw.info = ops->hw_info; /* platform-specific */ 491 492 runtime->hw.formats = le64_to_cpu(caps->formats); 493 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 494 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 495 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 496 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 497 498 /* 499 * caps->buffer_size_min is not used since the 500 * snd_pcm_hardware structure only defines buffer_bytes_max 501 */ 502 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 503 504 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 505 runtime->hw.period_bytes_min, 506 runtime->hw.period_bytes_max); 507 dev_dbg(component->dev, "period count %d max %d\n", 508 runtime->hw.periods_min, 509 runtime->hw.periods_max); 510 dev_dbg(component->dev, "buffer max %zd bytes\n", 511 runtime->hw.buffer_bytes_max); 512 513 /* set wait time - TODO: come from topology */ 514 substream->wait_time = 500; 515 516 spcm->stream[substream->stream].posn.host_posn = 0; 517 spcm->stream[substream->stream].posn.dai_posn = 0; 518 spcm->stream[substream->stream].substream = substream; 519 spcm->prepared[substream->stream] = false; 520 521 ret = snd_sof_pcm_platform_open(sdev, substream); 522 if (ret < 0) 523 dev_err(component->dev, "error: pcm open failed %d\n", ret); 524 525 return ret; 526} 527 528static int sof_pcm_close(struct snd_soc_component *component, 529 struct snd_pcm_substream *substream) 530{ 531 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 532 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 533 struct snd_sof_pcm *spcm; 534 int err; 535 536 /* nothing to do for BE */ 537 if (rtd->dai_link->no_pcm) 538 return 0; 539 540 spcm = snd_sof_find_spcm_dai(component, rtd); 541 if (!spcm) 542 return -EINVAL; 543 544 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 545 spcm->pcm.pcm_id, substream->stream); 546 547 err = snd_sof_pcm_platform_close(sdev, substream); 548 if (err < 0) { 549 dev_err(component->dev, "error: pcm close failed %d\n", 550 err); 551 /* 552 * keep going, no point in preventing the close 553 * from happening 554 */ 555 } 556 557 return 0; 558} 559 560/* 561 * Pre-allocate playback/capture audio buffer pages. 562 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 563 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 564 */ 565static int sof_pcm_new(struct snd_soc_component *component, 566 struct snd_soc_pcm_runtime *rtd) 567{ 568 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 569 struct snd_sof_pcm *spcm; 570 struct snd_pcm *pcm = rtd->pcm; 571 struct snd_soc_tplg_stream_caps *caps; 572 int stream = SNDRV_PCM_STREAM_PLAYBACK; 573 574 /* find SOF PCM for this RTD */ 575 spcm = snd_sof_find_spcm_dai(component, rtd); 576 if (!spcm) { 577 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 578 rtd->dai_link->id); 579 return 0; 580 } 581 582 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 583 584 /* do we need to pre-allocate playback audio buffer pages */ 585 if (!spcm->pcm.playback) 586 goto capture; 587 588 caps = &spcm->pcm.caps[stream]; 589 590 /* pre-allocate playback audio buffer pages */ 591 dev_dbg(component->dev, 592 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 593 caps->name, caps->buffer_size_min, caps->buffer_size_max); 594 595 if (!pcm->streams[stream].substream) { 596 dev_err(component->dev, "error: NULL playback substream!\n"); 597 return -EINVAL; 598 } 599 600 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 601 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 602 0, le32_to_cpu(caps->buffer_size_max)); 603capture: 604 stream = SNDRV_PCM_STREAM_CAPTURE; 605 606 /* do we need to pre-allocate capture audio buffer pages */ 607 if (!spcm->pcm.capture) 608 return 0; 609 610 caps = &spcm->pcm.caps[stream]; 611 612 /* pre-allocate capture audio buffer pages */ 613 dev_dbg(component->dev, 614 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 615 caps->name, caps->buffer_size_min, caps->buffer_size_max); 616 617 if (!pcm->streams[stream].substream) { 618 dev_err(component->dev, "error: NULL capture substream!\n"); 619 return -EINVAL; 620 } 621 622 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 623 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 624 0, le32_to_cpu(caps->buffer_size_max)); 625 626 return 0; 627} 628 629/* fixup the BE DAI link to match any values from topology */ 630static int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, 631 struct snd_pcm_hw_params *params) 632{ 633 struct snd_interval *rate = hw_param_interval(params, 634 SNDRV_PCM_HW_PARAM_RATE); 635 struct snd_interval *channels = hw_param_interval(params, 636 SNDRV_PCM_HW_PARAM_CHANNELS); 637 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 638 struct snd_soc_component *component = 639 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 640 struct snd_sof_dai *dai = 641 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 642 struct snd_soc_dpcm *dpcm; 643 644 /* no topology exists for this BE, try a common configuration */ 645 if (!dai) { 646 dev_warn(component->dev, 647 "warning: no topology found for BE DAI %s config\n", 648 rtd->dai_link->name); 649 650 /* set 48k, stereo, 16bits by default */ 651 rate->min = 48000; 652 rate->max = 48000; 653 654 channels->min = 2; 655 channels->max = 2; 656 657 snd_mask_none(fmt); 658 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 659 660 return 0; 661 } 662 663 /* read format from topology */ 664 snd_mask_none(fmt); 665 666 switch (dai->comp_dai.config.frame_fmt) { 667 case SOF_IPC_FRAME_S16_LE: 668 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 669 break; 670 case SOF_IPC_FRAME_S24_4LE: 671 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 672 break; 673 case SOF_IPC_FRAME_S32_LE: 674 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE); 675 break; 676 default: 677 dev_err(component->dev, "error: No available DAI format!\n"); 678 return -EINVAL; 679 } 680 681 /* read rate and channels from topology */ 682 switch (dai->dai_config->type) { 683 case SOF_DAI_INTEL_SSP: 684 rate->min = dai->dai_config->ssp.fsync_rate; 685 rate->max = dai->dai_config->ssp.fsync_rate; 686 channels->min = dai->dai_config->ssp.tdm_slots; 687 channels->max = dai->dai_config->ssp.tdm_slots; 688 689 dev_dbg(component->dev, 690 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 691 dev_dbg(component->dev, 692 "channels_min: %d channels_max: %d\n", 693 channels->min, channels->max); 694 695 break; 696 case SOF_DAI_INTEL_DMIC: 697 /* DMIC only supports 16 or 32 bit formats */ 698 if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) { 699 dev_err(component->dev, 700 "error: invalid fmt %d for DAI type %d\n", 701 dai->comp_dai.config.frame_fmt, 702 dai->dai_config->type); 703 } 704 break; 705 case SOF_DAI_INTEL_HDA: 706 /* 707 * HDAudio does not follow the default trigger 708 * sequence due to firmware implementation 709 */ 710 for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { 711 struct snd_soc_pcm_runtime *fe = dpcm->fe; 712 713 fe->dai_link->trigger[SNDRV_PCM_STREAM_PLAYBACK] = 714 SND_SOC_DPCM_TRIGGER_POST; 715 } 716 break; 717 case SOF_DAI_INTEL_ALH: 718 /* do nothing for ALH dai_link */ 719 break; 720 case SOF_DAI_IMX_ESAI: 721 rate->min = dai->dai_config->esai.fsync_rate; 722 rate->max = dai->dai_config->esai.fsync_rate; 723 channels->min = dai->dai_config->esai.tdm_slots; 724 channels->max = dai->dai_config->esai.tdm_slots; 725 726 dev_dbg(component->dev, 727 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 728 dev_dbg(component->dev, 729 "channels_min: %d channels_max: %d\n", 730 channels->min, channels->max); 731 break; 732 case SOF_DAI_IMX_SAI: 733 rate->min = dai->dai_config->sai.fsync_rate; 734 rate->max = dai->dai_config->sai.fsync_rate; 735 channels->min = dai->dai_config->sai.tdm_slots; 736 channels->max = dai->dai_config->sai.tdm_slots; 737 738 dev_dbg(component->dev, 739 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 740 dev_dbg(component->dev, 741 "channels_min: %d channels_max: %d\n", 742 channels->min, channels->max); 743 break; 744 default: 745 dev_err(component->dev, "error: invalid DAI type %d\n", 746 dai->dai_config->type); 747 break; 748 } 749 750 return 0; 751} 752 753static int sof_pcm_probe(struct snd_soc_component *component) 754{ 755 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 756 struct snd_sof_pdata *plat_data = sdev->pdata; 757 const char *tplg_filename; 758 int ret; 759 760 /* load the default topology */ 761 sdev->component = component; 762 763 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 764 "%s/%s", 765 plat_data->tplg_filename_prefix, 766 plat_data->tplg_filename); 767 if (!tplg_filename) 768 return -ENOMEM; 769 770 ret = snd_sof_load_topology(component, tplg_filename); 771 if (ret < 0) { 772 dev_err(component->dev, "error: failed to load DSP topology %d\n", 773 ret); 774 return ret; 775 } 776 777 return ret; 778} 779 780static void sof_pcm_remove(struct snd_soc_component *component) 781{ 782 /* remove topology */ 783 snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL); 784} 785 786void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 787{ 788 struct snd_soc_component_driver *pd = &sdev->plat_drv; 789 struct snd_sof_pdata *plat_data = sdev->pdata; 790 const char *drv_name; 791 792 drv_name = plat_data->machine->drv_name; 793 794 pd->name = "sof-audio-component"; 795 pd->probe = sof_pcm_probe; 796 pd->remove = sof_pcm_remove; 797 pd->open = sof_pcm_open; 798 pd->close = sof_pcm_close; 799 pd->hw_params = sof_pcm_hw_params; 800 pd->prepare = sof_pcm_prepare; 801 pd->hw_free = sof_pcm_hw_free; 802 pd->trigger = sof_pcm_trigger; 803 pd->pointer = sof_pcm_pointer; 804 805#if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 806 pd->compress_ops = &sof_compressed_ops; 807#endif 808#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) 809 /* override cops when probe support is enabled */ 810 pd->compress_ops = &sof_probe_compressed_ops; 811#endif 812 pd->pcm_construct = sof_pcm_new; 813 pd->ignore_machine = drv_name; 814 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 815 pd->be_pcm_base = SOF_BE_PCM_BASE; 816 pd->use_dai_pcm_id = true; 817 pd->topology_name_prefix = "sof"; 818 819 /* increment module refcount when a pcm is opened */ 820 pd->module_get_upon_open = 1; 821} 822