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 "sof-probes.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 static 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 void snd_sof_pcm_init_elapsed_work(struct work_struct *work) 70 { 71 INIT_WORK(work, snd_sof_pcm_period_elapsed_work); 72 } 73 74 /* 75 * sof pcm period elapse, this could be called at irq thread context. 76 */ 77 void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) 78 { 79 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 80 struct snd_soc_component *component = 81 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 82 struct snd_sof_pcm *spcm; 83 84 spcm = snd_sof_find_spcm_dai(component, rtd); 85 if (!spcm) { 86 dev_err(component->dev, 87 "error: period elapsed for unknown stream!\n"); 88 return; 89 } 90 91 /* 92 * snd_pcm_period_elapsed() can be called in interrupt context 93 * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), 94 * when the PCM is done draining or xrun happened, a STOP IPC will 95 * then be sent and this IPC will hit IPC timeout. 96 * To avoid sending IPC before the previous IPC is handled, we 97 * schedule delayed work here to call the snd_pcm_period_elapsed(). 98 */ 99 schedule_work(&spcm->stream[substream->stream].period_elapsed_work); 100 } 101 EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); 102 103 int sof_pcm_dsp_pcm_free(struct snd_pcm_substream *substream, struct snd_sof_dev *sdev, 104 struct snd_sof_pcm *spcm) 105 { 106 struct sof_ipc_stream stream; 107 struct sof_ipc_reply reply; 108 int ret; 109 110 if (!spcm->prepared[substream->stream]) 111 return 0; 112 113 stream.hdr.size = sizeof(stream); 114 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; 115 stream.comp_id = spcm->stream[substream->stream].comp_id; 116 117 /* send IPC to the DSP */ 118 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 119 sizeof(stream), &reply, sizeof(reply)); 120 if (!ret) 121 spcm->prepared[substream->stream] = false; 122 123 return ret; 124 } 125 126 static int sof_pcm_setup_connected_widgets(struct snd_sof_dev *sdev, 127 struct snd_soc_pcm_runtime *rtd, 128 struct snd_sof_pcm *spcm, int dir) 129 { 130 struct snd_soc_dai *dai; 131 int ret, j; 132 133 /* query DAPM for list of connected widgets and set them up */ 134 for_each_rtd_cpu_dais(rtd, j, dai) { 135 struct snd_soc_dapm_widget_list *list; 136 137 ret = snd_soc_dapm_dai_get_connected_widgets(dai, dir, &list, 138 dpcm_end_walk_at_be); 139 if (ret < 0) { 140 dev_err(sdev->dev, "error: dai %s has no valid %s path\n", dai->name, 141 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture"); 142 return ret; 143 } 144 145 spcm->stream[dir].list = list; 146 147 ret = sof_widget_list_setup(sdev, spcm, dir); 148 if (ret < 0) { 149 dev_err(sdev->dev, "error: failed widget list set up for pcm %d dir %d\n", 150 spcm->pcm.pcm_id, dir); 151 spcm->stream[dir].list = NULL; 152 snd_soc_dapm_dai_free_widgets(&list); 153 return ret; 154 } 155 } 156 157 return 0; 158 } 159 160 static int sof_pcm_hw_params(struct snd_soc_component *component, 161 struct snd_pcm_substream *substream, 162 struct snd_pcm_hw_params *params) 163 { 164 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 165 struct snd_pcm_runtime *runtime = substream->runtime; 166 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 167 struct snd_sof_pcm *spcm; 168 struct sof_ipc_pcm_params pcm; 169 struct sof_ipc_pcm_params_reply ipc_params_reply; 170 int ret; 171 172 /* nothing to do for BE */ 173 if (rtd->dai_link->no_pcm) 174 return 0; 175 176 spcm = snd_sof_find_spcm_dai(component, rtd); 177 if (!spcm) 178 return -EINVAL; 179 180 /* 181 * Handle repeated calls to hw_params() without free_pcm() in 182 * between. At least ALSA OSS emulation depends on this. 183 */ 184 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); 185 if (ret < 0) 186 return ret; 187 188 dev_dbg(component->dev, "pcm: hw params stream %d dir %d\n", 189 spcm->pcm.pcm_id, substream->stream); 190 191 memset(&pcm, 0, sizeof(pcm)); 192 193 /* create compressed page table for audio firmware */ 194 if (runtime->buffer_changed) { 195 ret = create_page_table(component, substream, runtime->dma_area, 196 runtime->dma_bytes); 197 if (ret < 0) 198 return ret; 199 } 200 201 /* number of pages should be rounded up */ 202 pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes); 203 204 /* set IPC PCM parameters */ 205 pcm.hdr.size = sizeof(pcm); 206 pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; 207 pcm.comp_id = spcm->stream[substream->stream].comp_id; 208 pcm.params.hdr.size = sizeof(pcm.params); 209 pcm.params.buffer.phy_addr = 210 spcm->stream[substream->stream].page_table.addr; 211 pcm.params.buffer.size = runtime->dma_bytes; 212 pcm.params.direction = substream->stream; 213 pcm.params.sample_valid_bytes = params_width(params) >> 3; 214 pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; 215 pcm.params.rate = params_rate(params); 216 pcm.params.channels = params_channels(params); 217 pcm.params.host_period_bytes = params_period_bytes(params); 218 219 /* container size */ 220 ret = snd_pcm_format_physical_width(params_format(params)); 221 if (ret < 0) 222 return ret; 223 pcm.params.sample_container_bytes = ret >> 3; 224 225 /* format */ 226 switch (params_format(params)) { 227 case SNDRV_PCM_FORMAT_S16: 228 pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE; 229 break; 230 case SNDRV_PCM_FORMAT_S24: 231 pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE; 232 break; 233 case SNDRV_PCM_FORMAT_S32: 234 pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE; 235 break; 236 case SNDRV_PCM_FORMAT_FLOAT: 237 pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT; 238 break; 239 default: 240 return -EINVAL; 241 } 242 243 /* firmware already configured host stream */ 244 ret = snd_sof_pcm_platform_hw_params(sdev, 245 substream, 246 params, 247 &pcm.params); 248 if (ret < 0) { 249 dev_err(component->dev, "error: platform hw params failed\n"); 250 return ret; 251 } 252 253 dev_dbg(component->dev, "stream_tag %d", pcm.params.stream_tag); 254 255 /* if this is a repeated hw_params without hw_free, skip setting up widgets */ 256 if (!spcm->stream[substream->stream].list) { 257 ret = sof_pcm_setup_connected_widgets(sdev, rtd, spcm, substream->stream); 258 if (ret < 0) 259 return ret; 260 } 261 262 /* send hw_params IPC to the DSP */ 263 ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm), 264 &ipc_params_reply, sizeof(ipc_params_reply)); 265 if (ret < 0) { 266 dev_err(component->dev, "error: hw params ipc failed for stream %d\n", 267 pcm.params.stream_tag); 268 return ret; 269 } 270 271 ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply); 272 if (ret < 0) 273 return ret; 274 275 spcm->prepared[substream->stream] = true; 276 277 /* save pcm hw_params */ 278 memcpy(&spcm->params[substream->stream], params, sizeof(*params)); 279 280 return ret; 281 } 282 283 static int sof_pcm_hw_free(struct snd_soc_component *component, 284 struct snd_pcm_substream *substream) 285 { 286 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 287 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 288 struct snd_sof_pcm *spcm; 289 int ret, err = 0; 290 291 /* nothing to do for BE */ 292 if (rtd->dai_link->no_pcm) 293 return 0; 294 295 spcm = snd_sof_find_spcm_dai(component, rtd); 296 if (!spcm) 297 return -EINVAL; 298 299 dev_dbg(component->dev, "pcm: free stream %d dir %d\n", 300 spcm->pcm.pcm_id, substream->stream); 301 302 /* free PCM in the DSP */ 303 ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm); 304 if (ret < 0) 305 err = ret; 306 307 308 /* stop DMA */ 309 ret = snd_sof_pcm_platform_hw_free(sdev, substream); 310 if (ret < 0) { 311 dev_err(component->dev, "error: platform hw free failed\n"); 312 err = ret; 313 } 314 315 /* free the DAPM widget list */ 316 ret = sof_widget_list_free(sdev, spcm, substream->stream); 317 if (ret < 0) 318 err = ret; 319 320 cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); 321 322 return err; 323 } 324 325 static int sof_pcm_prepare(struct snd_soc_component *component, 326 struct snd_pcm_substream *substream) 327 { 328 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 329 struct snd_sof_pcm *spcm; 330 int ret; 331 332 /* nothing to do for BE */ 333 if (rtd->dai_link->no_pcm) 334 return 0; 335 336 spcm = snd_sof_find_spcm_dai(component, rtd); 337 if (!spcm) 338 return -EINVAL; 339 340 if (spcm->prepared[substream->stream]) 341 return 0; 342 343 dev_dbg(component->dev, "pcm: prepare stream %d dir %d\n", 344 spcm->pcm.pcm_id, substream->stream); 345 346 /* set hw_params */ 347 ret = sof_pcm_hw_params(component, 348 substream, &spcm->params[substream->stream]); 349 if (ret < 0) { 350 dev_err(component->dev, 351 "error: set pcm hw_params after resume\n"); 352 return ret; 353 } 354 355 return 0; 356 } 357 358 /* 359 * FE dai link trigger actions are always executed in non-atomic context because 360 * they involve IPC's. 361 */ 362 static int sof_pcm_trigger(struct snd_soc_component *component, 363 struct snd_pcm_substream *substream, int cmd) 364 { 365 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 366 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 367 struct snd_sof_pcm *spcm; 368 struct sof_ipc_stream stream; 369 struct sof_ipc_reply reply; 370 bool reset_hw_params = false; 371 bool free_widget_list = false; 372 bool ipc_first = false; 373 int ret; 374 375 /* nothing to do for BE */ 376 if (rtd->dai_link->no_pcm) 377 return 0; 378 379 spcm = snd_sof_find_spcm_dai(component, rtd); 380 if (!spcm) 381 return -EINVAL; 382 383 dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n", 384 spcm->pcm.pcm_id, substream->stream, cmd); 385 386 stream.hdr.size = sizeof(stream); 387 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; 388 stream.comp_id = spcm->stream[substream->stream].comp_id; 389 390 switch (cmd) { 391 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 392 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; 393 ipc_first = true; 394 break; 395 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 396 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; 397 break; 398 case SNDRV_PCM_TRIGGER_START: 399 if (spcm->stream[substream->stream].suspend_ignored) { 400 /* 401 * This case will be triggered when INFO_RESUME is 402 * not supported, no need to re-start streams that 403 * remained enabled in D0ix. 404 */ 405 spcm->stream[substream->stream].suspend_ignored = false; 406 return 0; 407 } 408 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; 409 break; 410 case SNDRV_PCM_TRIGGER_SUSPEND: 411 if (sdev->system_suspend_target == SOF_SUSPEND_S0IX && 412 spcm->stream[substream->stream].d0i3_compatible) { 413 /* 414 * trap the event, not sending trigger stop to 415 * prevent the FW pipelines from being stopped, 416 * and mark the flag to ignore the upcoming DAPM 417 * PM events. 418 */ 419 spcm->stream[substream->stream].suspend_ignored = true; 420 return 0; 421 } 422 free_widget_list = true; 423 fallthrough; 424 case SNDRV_PCM_TRIGGER_STOP: 425 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; 426 ipc_first = true; 427 reset_hw_params = true; 428 break; 429 default: 430 dev_err(component->dev, "error: unhandled trigger cmd %d\n", 431 cmd); 432 return -EINVAL; 433 } 434 435 /* 436 * DMA and IPC sequence is different for start and stop. Need to send 437 * STOP IPC before stop DMA 438 */ 439 if (!ipc_first) 440 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 441 442 /* send IPC to the DSP */ 443 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 444 sizeof(stream), &reply, sizeof(reply)); 445 446 /* need to STOP DMA even if STOP IPC failed */ 447 if (ipc_first) 448 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 449 450 /* free PCM if reset_hw_params is set and the STOP IPC is successful */ 451 if (!ret && reset_hw_params) { 452 ret = sof_pcm_stream_free(sdev, substream, spcm, substream->stream, 453 free_widget_list); 454 if (ret < 0) 455 return ret; 456 } 457 458 return ret; 459 } 460 461 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component, 462 struct snd_pcm_substream *substream) 463 { 464 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 465 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 466 struct snd_sof_pcm *spcm; 467 snd_pcm_uframes_t host, dai; 468 469 /* nothing to do for BE */ 470 if (rtd->dai_link->no_pcm) 471 return 0; 472 473 /* use dsp ops pointer callback directly if set */ 474 if (sof_ops(sdev)->pcm_pointer) 475 return sof_ops(sdev)->pcm_pointer(sdev, substream); 476 477 spcm = snd_sof_find_spcm_dai(component, rtd); 478 if (!spcm) 479 return -EINVAL; 480 481 /* read position from DSP */ 482 host = bytes_to_frames(substream->runtime, 483 spcm->stream[substream->stream].posn.host_posn); 484 dai = bytes_to_frames(substream->runtime, 485 spcm->stream[substream->stream].posn.dai_posn); 486 487 dev_vdbg(component->dev, 488 "PCM: stream %d dir %d DMA position %lu DAI position %lu\n", 489 spcm->pcm.pcm_id, substream->stream, host, dai); 490 491 return host; 492 } 493 494 static int sof_pcm_open(struct snd_soc_component *component, 495 struct snd_pcm_substream *substream) 496 { 497 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 498 struct snd_pcm_runtime *runtime = substream->runtime; 499 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 500 const struct snd_sof_dsp_ops *ops = sof_ops(sdev); 501 struct snd_sof_pcm *spcm; 502 struct snd_soc_tplg_stream_caps *caps; 503 int ret; 504 505 /* nothing to do for BE */ 506 if (rtd->dai_link->no_pcm) 507 return 0; 508 509 spcm = snd_sof_find_spcm_dai(component, rtd); 510 if (!spcm) 511 return -EINVAL; 512 513 dev_dbg(component->dev, "pcm: open stream %d dir %d\n", 514 spcm->pcm.pcm_id, substream->stream); 515 516 517 caps = &spcm->pcm.caps[substream->stream]; 518 519 /* set runtime config */ 520 runtime->hw.info = ops->hw_info; /* platform-specific */ 521 522 /* set any runtime constraints based on topology */ 523 runtime->hw.formats = le64_to_cpu(caps->formats); 524 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 525 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 526 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 527 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 528 529 /* 530 * caps->buffer_size_min is not used since the 531 * snd_pcm_hardware structure only defines buffer_bytes_max 532 */ 533 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 534 535 dev_dbg(component->dev, "period min %zd max %zd bytes\n", 536 runtime->hw.period_bytes_min, 537 runtime->hw.period_bytes_max); 538 dev_dbg(component->dev, "period count %d max %d\n", 539 runtime->hw.periods_min, 540 runtime->hw.periods_max); 541 dev_dbg(component->dev, "buffer max %zd bytes\n", 542 runtime->hw.buffer_bytes_max); 543 544 /* set wait time - TODO: come from topology */ 545 substream->wait_time = 500; 546 547 spcm->stream[substream->stream].posn.host_posn = 0; 548 spcm->stream[substream->stream].posn.dai_posn = 0; 549 spcm->stream[substream->stream].substream = substream; 550 spcm->prepared[substream->stream] = false; 551 552 ret = snd_sof_pcm_platform_open(sdev, substream); 553 if (ret < 0) 554 dev_err(component->dev, "error: pcm open failed %d\n", ret); 555 556 return ret; 557 } 558 559 static int sof_pcm_close(struct snd_soc_component *component, 560 struct snd_pcm_substream *substream) 561 { 562 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 563 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 564 struct snd_sof_pcm *spcm; 565 int err; 566 567 /* nothing to do for BE */ 568 if (rtd->dai_link->no_pcm) 569 return 0; 570 571 spcm = snd_sof_find_spcm_dai(component, rtd); 572 if (!spcm) 573 return -EINVAL; 574 575 dev_dbg(component->dev, "pcm: close stream %d dir %d\n", 576 spcm->pcm.pcm_id, substream->stream); 577 578 err = snd_sof_pcm_platform_close(sdev, substream); 579 if (err < 0) { 580 dev_err(component->dev, "error: pcm close failed %d\n", 581 err); 582 /* 583 * keep going, no point in preventing the close 584 * from happening 585 */ 586 } 587 588 return 0; 589 } 590 591 /* 592 * Pre-allocate playback/capture audio buffer pages. 593 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 594 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 595 */ 596 static int sof_pcm_new(struct snd_soc_component *component, 597 struct snd_soc_pcm_runtime *rtd) 598 { 599 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 600 struct snd_sof_pcm *spcm; 601 struct snd_pcm *pcm = rtd->pcm; 602 struct snd_soc_tplg_stream_caps *caps; 603 int stream = SNDRV_PCM_STREAM_PLAYBACK; 604 605 /* find SOF PCM for this RTD */ 606 spcm = snd_sof_find_spcm_dai(component, rtd); 607 if (!spcm) { 608 dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n", 609 rtd->dai_link->id); 610 return 0; 611 } 612 613 dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 614 615 /* do we need to pre-allocate playback audio buffer pages */ 616 if (!spcm->pcm.playback) 617 goto capture; 618 619 caps = &spcm->pcm.caps[stream]; 620 621 /* pre-allocate playback audio buffer pages */ 622 dev_dbg(component->dev, 623 "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 624 caps->name, caps->buffer_size_min, caps->buffer_size_max); 625 626 if (!pcm->streams[stream].substream) { 627 dev_err(component->dev, "error: NULL playback substream!\n"); 628 return -EINVAL; 629 } 630 631 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 632 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 633 0, le32_to_cpu(caps->buffer_size_max)); 634 capture: 635 stream = SNDRV_PCM_STREAM_CAPTURE; 636 637 /* do we need to pre-allocate capture audio buffer pages */ 638 if (!spcm->pcm.capture) 639 return 0; 640 641 caps = &spcm->pcm.caps[stream]; 642 643 /* pre-allocate capture audio buffer pages */ 644 dev_dbg(component->dev, 645 "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 646 caps->name, caps->buffer_size_min, caps->buffer_size_max); 647 648 if (!pcm->streams[stream].substream) { 649 dev_err(component->dev, "error: NULL capture substream!\n"); 650 return -EINVAL; 651 } 652 653 snd_pcm_set_managed_buffer(pcm->streams[stream].substream, 654 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 655 0, le32_to_cpu(caps->buffer_size_max)); 656 657 return 0; 658 } 659 660 static void ssp_dai_config_pcm_params_match(struct snd_sof_dev *sdev, const char *link_name, 661 struct snd_pcm_hw_params *params) 662 { 663 struct sof_ipc_dai_config *config; 664 struct snd_sof_dai *dai; 665 int i; 666 667 /* 668 * Search for all matching DAIs as we can have both playback and capture DAI 669 * associated with the same link. 670 */ 671 list_for_each_entry(dai, &sdev->dai_list, list) { 672 if (!dai->name || strcmp(link_name, dai->name)) 673 continue; 674 for (i = 0; i < dai->number_configs; i++) { 675 config = &dai->dai_config[i]; 676 if (config->ssp.fsync_rate == params_rate(params)) { 677 dev_dbg(sdev->dev, "DAI config %d matches pcm hw params\n", i); 678 dai->current_config = i; 679 break; 680 } 681 } 682 } 683 } 684 685 /* fixup the BE DAI link to match any values from topology */ 686 int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) 687 { 688 struct snd_interval *rate = hw_param_interval(params, 689 SNDRV_PCM_HW_PARAM_RATE); 690 struct snd_interval *channels = hw_param_interval(params, 691 SNDRV_PCM_HW_PARAM_CHANNELS); 692 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 693 struct snd_soc_component *component = 694 snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 695 struct snd_sof_dai *dai = 696 snd_sof_find_dai(component, (char *)rtd->dai_link->name); 697 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 698 struct snd_soc_dpcm *dpcm; 699 700 /* no topology exists for this BE, try a common configuration */ 701 if (!dai) { 702 dev_warn(component->dev, 703 "warning: no topology found for BE DAI %s config\n", 704 rtd->dai_link->name); 705 706 /* set 48k, stereo, 16bits by default */ 707 rate->min = 48000; 708 rate->max = 48000; 709 710 channels->min = 2; 711 channels->max = 2; 712 713 snd_mask_none(fmt); 714 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 715 716 return 0; 717 } 718 719 /* read format from topology */ 720 snd_mask_none(fmt); 721 722 switch (dai->comp_dai.config.frame_fmt) { 723 case SOF_IPC_FRAME_S16_LE: 724 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 725 break; 726 case SOF_IPC_FRAME_S24_4LE: 727 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 728 break; 729 case SOF_IPC_FRAME_S32_LE: 730 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE); 731 break; 732 default: 733 dev_err(component->dev, "error: No available DAI format!\n"); 734 return -EINVAL; 735 } 736 737 /* read rate and channels from topology */ 738 switch (dai->dai_config->type) { 739 case SOF_DAI_INTEL_SSP: 740 /* search for config to pcm params match, if not found use default */ 741 ssp_dai_config_pcm_params_match(sdev, (char *)rtd->dai_link->name, params); 742 743 rate->min = dai->dai_config[dai->current_config].ssp.fsync_rate; 744 rate->max = dai->dai_config[dai->current_config].ssp.fsync_rate; 745 channels->min = dai->dai_config[dai->current_config].ssp.tdm_slots; 746 channels->max = dai->dai_config[dai->current_config].ssp.tdm_slots; 747 748 dev_dbg(component->dev, 749 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 750 dev_dbg(component->dev, 751 "channels_min: %d channels_max: %d\n", 752 channels->min, channels->max); 753 754 break; 755 case SOF_DAI_INTEL_DMIC: 756 /* DMIC only supports 16 or 32 bit formats */ 757 if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) { 758 dev_err(component->dev, 759 "error: invalid fmt %d for DAI type %d\n", 760 dai->comp_dai.config.frame_fmt, 761 dai->dai_config->type); 762 } 763 break; 764 case SOF_DAI_INTEL_HDA: 765 /* 766 * HDAudio does not follow the default trigger 767 * sequence due to firmware implementation 768 */ 769 for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { 770 struct snd_soc_pcm_runtime *fe = dpcm->fe; 771 772 fe->dai_link->trigger[SNDRV_PCM_STREAM_PLAYBACK] = 773 SND_SOC_DPCM_TRIGGER_POST; 774 } 775 break; 776 case SOF_DAI_INTEL_ALH: 777 /* 778 * Dai could run with different channel count compared with 779 * front end, so get dai channel count from topology 780 */ 781 channels->min = dai->dai_config->alh.channels; 782 channels->max = dai->dai_config->alh.channels; 783 break; 784 case SOF_DAI_IMX_ESAI: 785 rate->min = dai->dai_config->esai.fsync_rate; 786 rate->max = dai->dai_config->esai.fsync_rate; 787 channels->min = dai->dai_config->esai.tdm_slots; 788 channels->max = dai->dai_config->esai.tdm_slots; 789 790 dev_dbg(component->dev, 791 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 792 dev_dbg(component->dev, 793 "channels_min: %d channels_max: %d\n", 794 channels->min, channels->max); 795 break; 796 case SOF_DAI_MEDIATEK_AFE: 797 rate->min = dai->dai_config->afe.rate; 798 rate->max = dai->dai_config->afe.rate; 799 channels->min = dai->dai_config->afe.channels; 800 channels->max = dai->dai_config->afe.channels; 801 802 dev_dbg(component->dev, 803 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 804 dev_dbg(component->dev, 805 "channels_min: %d channels_max: %d\n", 806 channels->min, channels->max); 807 break; 808 case SOF_DAI_IMX_SAI: 809 rate->min = dai->dai_config->sai.fsync_rate; 810 rate->max = dai->dai_config->sai.fsync_rate; 811 channels->min = dai->dai_config->sai.tdm_slots; 812 channels->max = dai->dai_config->sai.tdm_slots; 813 814 dev_dbg(component->dev, 815 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 816 dev_dbg(component->dev, 817 "channels_min: %d channels_max: %d\n", 818 channels->min, channels->max); 819 break; 820 case SOF_DAI_AMD_BT: 821 rate->min = dai->dai_config->acpbt.fsync_rate; 822 rate->max = dai->dai_config->acpbt.fsync_rate; 823 channels->min = dai->dai_config->acpbt.tdm_slots; 824 channels->max = dai->dai_config->acpbt.tdm_slots; 825 826 dev_dbg(component->dev, 827 "AMD_BT rate_min: %d rate_max: %d\n", rate->min, rate->max); 828 dev_dbg(component->dev, 829 "AMD_BT channels_min: %d channels_max: %d\n", 830 channels->min, channels->max); 831 break; 832 case SOF_DAI_AMD_SP: 833 rate->min = dai->dai_config->acpsp.fsync_rate; 834 rate->max = dai->dai_config->acpsp.fsync_rate; 835 channels->min = dai->dai_config->acpsp.tdm_slots; 836 channels->max = dai->dai_config->acpsp.tdm_slots; 837 838 dev_dbg(component->dev, 839 "AMD_SP rate_min: %d rate_max: %d\n", rate->min, rate->max); 840 dev_dbg(component->dev, 841 "AMD_SP channels_min: %d channels_max: %d\n", 842 channels->min, channels->max); 843 break; 844 case SOF_DAI_AMD_DMIC: 845 rate->min = dai->dai_config->acpdmic.fsync_rate; 846 rate->max = dai->dai_config->acpdmic.fsync_rate; 847 channels->min = dai->dai_config->acpdmic.tdm_slots; 848 channels->max = dai->dai_config->acpdmic.tdm_slots; 849 850 dev_dbg(component->dev, 851 "AMD_DMIC rate_min: %d rate_max: %d\n", rate->min, rate->max); 852 dev_dbg(component->dev, 853 "AMD_DMIC channels_min: %d channels_max: %d\n", 854 channels->min, channels->max); 855 break; 856 default: 857 dev_err(component->dev, "error: invalid DAI type %d\n", 858 dai->dai_config->type); 859 break; 860 } 861 862 return 0; 863 } 864 EXPORT_SYMBOL(sof_pcm_dai_link_fixup); 865 866 static int sof_pcm_probe(struct snd_soc_component *component) 867 { 868 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 869 struct snd_sof_pdata *plat_data = sdev->pdata; 870 const char *tplg_filename; 871 int ret; 872 873 /* load the default topology */ 874 sdev->component = component; 875 876 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 877 "%s/%s", 878 plat_data->tplg_filename_prefix, 879 plat_data->tplg_filename); 880 if (!tplg_filename) 881 return -ENOMEM; 882 883 ret = snd_sof_load_topology(component, tplg_filename); 884 if (ret < 0) { 885 dev_err(component->dev, "error: failed to load DSP topology %d\n", 886 ret); 887 return ret; 888 } 889 890 return ret; 891 } 892 893 static void sof_pcm_remove(struct snd_soc_component *component) 894 { 895 /* remove topology */ 896 snd_soc_tplg_component_remove(component); 897 } 898 899 static int sof_pcm_ack(struct snd_soc_component *component, 900 struct snd_pcm_substream *substream) 901 { 902 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 903 904 return snd_sof_pcm_platform_ack(sdev, substream); 905 } 906 907 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 908 { 909 struct snd_soc_component_driver *pd = &sdev->plat_drv; 910 struct snd_sof_pdata *plat_data = sdev->pdata; 911 const char *drv_name; 912 913 drv_name = plat_data->machine->drv_name; 914 915 pd->name = "sof-audio-component"; 916 pd->probe = sof_pcm_probe; 917 pd->remove = sof_pcm_remove; 918 pd->open = sof_pcm_open; 919 pd->close = sof_pcm_close; 920 pd->hw_params = sof_pcm_hw_params; 921 pd->prepare = sof_pcm_prepare; 922 pd->hw_free = sof_pcm_hw_free; 923 pd->trigger = sof_pcm_trigger; 924 pd->pointer = sof_pcm_pointer; 925 pd->ack = sof_pcm_ack; 926 927 #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) 928 pd->compress_ops = &sof_probe_compressed_ops; 929 #endif 930 pd->pcm_construct = sof_pcm_new; 931 pd->ignore_machine = drv_name; 932 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 933 pd->be_pcm_base = SOF_BE_PCM_BASE; 934 pd->use_dai_pcm_id = true; 935 pd->topology_name_prefix = "sof"; 936 937 /* increment module refcount when a pcm is opened */ 938 pd->module_get_upon_open = 1; 939 } 940