1 // SPDX-License-Identifier: (GPL-2.0 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 "ops.h" 18 19 #define DRV_NAME "sof-audio-component" 20 21 /* Create DMA buffer page table for DSP */ 22 static int create_page_table(struct snd_pcm_substream *substream, 23 unsigned char *dma_area, size_t size) 24 { 25 struct snd_soc_pcm_runtime *rtd = substream->private_data; 26 struct snd_soc_component *component = 27 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 28 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 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(sdev, rtd); 34 if (!spcm) 35 return -EINVAL; 36 37 return snd_sof_create_page_table(sdev, 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_sof_dev *sdev = spcm->sdev; 45 /* validate offset */ 46 int ret = snd_sof_ipc_pcm_params(sdev, substream, reply); 47 48 if (ret < 0) 49 dev_err(sdev->dev, "error: got wrong reply for PCM %d\n", 50 spcm->pcm.pcm_id); 51 52 return ret; 53 } 54 55 /* this may get called several times by oss emulation */ 56 static int sof_pcm_hw_params(struct snd_pcm_substream *substream, 57 struct snd_pcm_hw_params *params) 58 { 59 struct snd_soc_pcm_runtime *rtd = substream->private_data; 60 struct snd_pcm_runtime *runtime = substream->runtime; 61 struct snd_soc_component *component = 62 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 63 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 64 struct snd_sof_pcm *spcm; 65 struct sof_ipc_pcm_params pcm; 66 struct sof_ipc_pcm_params_reply ipc_params_reply; 67 int ret; 68 69 /* nothing to do for BE */ 70 if (rtd->dai_link->no_pcm) 71 return 0; 72 73 spcm = snd_sof_find_spcm_dai(sdev, rtd); 74 if (!spcm) 75 return -EINVAL; 76 77 dev_dbg(sdev->dev, "pcm: hw params stream %d dir %d\n", 78 spcm->pcm.pcm_id, substream->stream); 79 80 memset(&pcm, 0, sizeof(pcm)); 81 82 /* allocate audio buffer pages */ 83 ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); 84 if (ret < 0) { 85 dev_err(sdev->dev, "error: could not allocate %d bytes for PCM %d\n", 86 params_buffer_bytes(params), spcm->pcm.pcm_id); 87 return ret; 88 } 89 if (ret) { 90 /* 91 * ret == 1 means the buffer is changed 92 * create compressed page table for audio firmware 93 * ret == 0 means the buffer is not changed 94 * so no need to regenerate the page table 95 */ 96 ret = create_page_table(substream, runtime->dma_area, 97 runtime->dma_bytes); 98 if (ret < 0) 99 return ret; 100 } 101 102 /* number of pages should be rounded up */ 103 pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes); 104 105 /* set IPC PCM parameters */ 106 pcm.hdr.size = sizeof(pcm); 107 pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; 108 pcm.comp_id = spcm->stream[substream->stream].comp_id; 109 pcm.params.hdr.size = sizeof(pcm.params); 110 pcm.params.buffer.phy_addr = 111 spcm->stream[substream->stream].page_table.addr; 112 pcm.params.buffer.size = runtime->dma_bytes; 113 pcm.params.direction = substream->stream; 114 pcm.params.sample_valid_bytes = params_width(params) >> 3; 115 pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; 116 pcm.params.rate = params_rate(params); 117 pcm.params.channels = params_channels(params); 118 pcm.params.host_period_bytes = params_period_bytes(params); 119 120 /* container size */ 121 ret = snd_pcm_format_physical_width(params_format(params)); 122 if (ret < 0) 123 return ret; 124 pcm.params.sample_container_bytes = ret >> 3; 125 126 /* format */ 127 switch (params_format(params)) { 128 case SNDRV_PCM_FORMAT_S16: 129 pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE; 130 break; 131 case SNDRV_PCM_FORMAT_S24: 132 pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE; 133 break; 134 case SNDRV_PCM_FORMAT_S32: 135 pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE; 136 break; 137 case SNDRV_PCM_FORMAT_FLOAT: 138 pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT; 139 break; 140 default: 141 return -EINVAL; 142 } 143 144 /* firmware already configured host stream */ 145 ret = snd_sof_pcm_platform_hw_params(sdev, 146 substream, 147 params, 148 &pcm.params); 149 if (ret < 0) { 150 dev_err(sdev->dev, "error: platform hw params failed\n"); 151 return ret; 152 } 153 154 dev_dbg(sdev->dev, "stream_tag %d", pcm.params.stream_tag); 155 156 /* send IPC to the DSP */ 157 ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm), 158 &ipc_params_reply, sizeof(ipc_params_reply)); 159 if (ret < 0) { 160 dev_err(sdev->dev, "error: hw params ipc failed for stream %d\n", 161 pcm.params.stream_tag); 162 return ret; 163 } 164 165 ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply); 166 if (ret < 0) 167 return ret; 168 169 /* save pcm hw_params */ 170 memcpy(&spcm->params[substream->stream], params, sizeof(*params)); 171 172 return ret; 173 } 174 175 static int sof_pcm_hw_free(struct snd_pcm_substream *substream) 176 { 177 struct snd_soc_pcm_runtime *rtd = substream->private_data; 178 struct snd_soc_component *component = 179 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 180 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 181 struct snd_sof_pcm *spcm; 182 struct sof_ipc_stream stream; 183 struct sof_ipc_reply reply; 184 int ret; 185 186 /* nothing to do for BE */ 187 if (rtd->dai_link->no_pcm) 188 return 0; 189 190 spcm = snd_sof_find_spcm_dai(sdev, rtd); 191 if (!spcm) 192 return -EINVAL; 193 194 dev_dbg(sdev->dev, "pcm: free stream %d dir %d\n", spcm->pcm.pcm_id, 195 substream->stream); 196 197 stream.hdr.size = sizeof(stream); 198 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; 199 stream.comp_id = spcm->stream[substream->stream].comp_id; 200 201 /* send IPC to the DSP */ 202 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 203 sizeof(stream), &reply, sizeof(reply)); 204 205 snd_pcm_lib_free_pages(substream); 206 return ret; 207 } 208 209 static int sof_pcm_prepare(struct snd_pcm_substream *substream) 210 { 211 struct snd_soc_pcm_runtime *rtd = substream->private_data; 212 struct snd_soc_component *component = 213 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 214 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 215 struct snd_sof_pcm *spcm; 216 int ret; 217 218 /* nothing to do for BE */ 219 if (rtd->dai_link->no_pcm) 220 return 0; 221 222 spcm = snd_sof_find_spcm_dai(sdev, rtd); 223 if (!spcm) 224 return -EINVAL; 225 226 /* 227 * check if hw_params needs to be set-up again. 228 * This is only needed when resuming from system sleep. 229 */ 230 if (!spcm->hw_params_upon_resume[substream->stream]) 231 return 0; 232 233 dev_dbg(sdev->dev, "pcm: prepare stream %d dir %d\n", spcm->pcm.pcm_id, 234 substream->stream); 235 236 /* set hw_params */ 237 ret = sof_pcm_hw_params(substream, &spcm->params[substream->stream]); 238 if (ret < 0) { 239 dev_err(sdev->dev, "error: set pcm hw_params after resume\n"); 240 return ret; 241 } 242 243 return 0; 244 } 245 246 /* 247 * FE dai link trigger actions are always executed in non-atomic context because 248 * they involve IPC's. 249 */ 250 static int sof_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 251 { 252 struct snd_soc_pcm_runtime *rtd = substream->private_data; 253 struct snd_soc_component *component = 254 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 255 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 256 struct snd_sof_pcm *spcm; 257 struct sof_ipc_stream stream; 258 struct sof_ipc_reply reply; 259 int ret; 260 261 /* nothing to do for BE */ 262 if (rtd->dai_link->no_pcm) 263 return 0; 264 265 spcm = snd_sof_find_spcm_dai(sdev, rtd); 266 if (!spcm) 267 return -EINVAL; 268 269 dev_dbg(sdev->dev, "pcm: trigger stream %d dir %d cmd %d\n", 270 spcm->pcm.pcm_id, substream->stream, cmd); 271 272 stream.hdr.size = sizeof(stream); 273 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; 274 stream.comp_id = spcm->stream[substream->stream].comp_id; 275 276 switch (cmd) { 277 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 278 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; 279 break; 280 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 281 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; 282 break; 283 case SNDRV_PCM_TRIGGER_RESUME: 284 /* set up hw_params */ 285 ret = sof_pcm_prepare(substream); 286 if (ret < 0) { 287 dev_err(sdev->dev, 288 "error: failed to set up hw_params upon resume\n"); 289 return ret; 290 } 291 292 /* fallthrough */ 293 case SNDRV_PCM_TRIGGER_START: 294 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; 295 break; 296 case SNDRV_PCM_TRIGGER_SUSPEND: 297 case SNDRV_PCM_TRIGGER_STOP: 298 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; 299 break; 300 default: 301 dev_err(sdev->dev, "error: unhandled trigger cmd %d\n", cmd); 302 return -EINVAL; 303 } 304 305 snd_sof_pcm_platform_trigger(sdev, substream, cmd); 306 307 /* send IPC to the DSP */ 308 ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 309 sizeof(stream), &reply, sizeof(reply)); 310 311 if (ret < 0 || cmd != SNDRV_PCM_TRIGGER_SUSPEND) 312 return ret; 313 314 /* 315 * The hw_free op is usually called when the pcm stream is closed. 316 * Since the stream is not closed during suspend, the DSP needs to be 317 * notified explicitly to free pcm to prevent errors upon resume. 318 */ 319 stream.hdr.size = sizeof(stream); 320 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; 321 stream.comp_id = spcm->stream[substream->stream].comp_id; 322 323 /* send IPC to the DSP */ 324 return sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream, 325 sizeof(stream), &reply, sizeof(reply)); 326 } 327 328 static snd_pcm_uframes_t sof_pcm_pointer(struct snd_pcm_substream *substream) 329 { 330 struct snd_soc_pcm_runtime *rtd = substream->private_data; 331 struct snd_soc_component *component = 332 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 333 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 334 struct snd_sof_pcm *spcm; 335 snd_pcm_uframes_t host, dai; 336 337 /* nothing to do for BE */ 338 if (rtd->dai_link->no_pcm) 339 return 0; 340 341 /* use dsp ops pointer callback directly if set */ 342 if (sof_ops(sdev)->pcm_pointer) 343 return sof_ops(sdev)->pcm_pointer(sdev, substream); 344 345 spcm = snd_sof_find_spcm_dai(sdev, rtd); 346 if (!spcm) 347 return -EINVAL; 348 349 /* read position from DSP */ 350 host = bytes_to_frames(substream->runtime, 351 spcm->stream[substream->stream].posn.host_posn); 352 dai = bytes_to_frames(substream->runtime, 353 spcm->stream[substream->stream].posn.dai_posn); 354 355 dev_dbg(sdev->dev, "PCM: stream %d dir %d DMA position %lu DAI position %lu\n", 356 spcm->pcm.pcm_id, substream->stream, host, dai); 357 358 return host; 359 } 360 361 static int sof_pcm_open(struct snd_pcm_substream *substream) 362 { 363 struct snd_soc_pcm_runtime *rtd = substream->private_data; 364 struct snd_pcm_runtime *runtime = substream->runtime; 365 struct snd_soc_component *component = 366 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 367 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 368 struct snd_sof_pcm *spcm; 369 struct snd_soc_tplg_stream_caps *caps; 370 int ret; 371 int err; 372 373 /* nothing to do for BE */ 374 if (rtd->dai_link->no_pcm) 375 return 0; 376 377 spcm = snd_sof_find_spcm_dai(sdev, rtd); 378 if (!spcm) 379 return -EINVAL; 380 381 dev_dbg(sdev->dev, "pcm: open stream %d dir %d\n", spcm->pcm.pcm_id, 382 substream->stream); 383 384 /* clear hw_params_upon_resume flag */ 385 spcm->hw_params_upon_resume[substream->stream] = 0; 386 387 caps = &spcm->pcm.caps[substream->stream]; 388 389 ret = pm_runtime_get_sync(sdev->dev); 390 if (ret < 0) { 391 dev_err(sdev->dev, "error: pcm open failed to resume %d\n", 392 ret); 393 pm_runtime_put_noidle(sdev->dev); 394 return ret; 395 } 396 397 /* set any runtime constraints based on topology */ 398 snd_pcm_hw_constraint_step(substream->runtime, 0, 399 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 400 le32_to_cpu(caps->period_size_min)); 401 snd_pcm_hw_constraint_step(substream->runtime, 0, 402 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 403 le32_to_cpu(caps->period_size_min)); 404 405 /* set runtime config */ 406 runtime->hw.info = SNDRV_PCM_INFO_MMAP | 407 SNDRV_PCM_INFO_MMAP_VALID | 408 SNDRV_PCM_INFO_INTERLEAVED | 409 SNDRV_PCM_INFO_PAUSE | 410 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP; 411 runtime->hw.formats = le64_to_cpu(caps->formats); 412 runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min); 413 runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max); 414 runtime->hw.periods_min = le32_to_cpu(caps->periods_min); 415 runtime->hw.periods_max = le32_to_cpu(caps->periods_max); 416 417 /* 418 * caps->buffer_size_min is not used since the 419 * snd_pcm_hardware structure only defines buffer_bytes_max 420 */ 421 runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max); 422 423 dev_dbg(sdev->dev, "period min %zd max %zd bytes\n", 424 runtime->hw.period_bytes_min, 425 runtime->hw.period_bytes_max); 426 dev_dbg(sdev->dev, "period count %d max %d\n", 427 runtime->hw.periods_min, 428 runtime->hw.periods_max); 429 dev_dbg(sdev->dev, "buffer max %zd bytes\n", 430 runtime->hw.buffer_bytes_max); 431 432 /* set wait time - TODO: come from topology */ 433 substream->wait_time = 500; 434 435 spcm->stream[substream->stream].posn.host_posn = 0; 436 spcm->stream[substream->stream].posn.dai_posn = 0; 437 spcm->stream[substream->stream].substream = substream; 438 439 ret = snd_sof_pcm_platform_open(sdev, substream); 440 if (ret < 0) { 441 dev_err(sdev->dev, "error: pcm open failed %d\n", 442 ret); 443 444 pm_runtime_mark_last_busy(sdev->dev); 445 446 err = pm_runtime_put_autosuspend(sdev->dev); 447 if (err < 0) 448 dev_err(sdev->dev, "error: pcm close failed to idle %d\n", 449 err); 450 } 451 452 return ret; 453 } 454 455 static int sof_pcm_close(struct snd_pcm_substream *substream) 456 { 457 struct snd_soc_pcm_runtime *rtd = substream->private_data; 458 struct snd_soc_component *component = 459 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 460 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 461 struct snd_sof_pcm *spcm; 462 int err; 463 464 /* nothing to do for BE */ 465 if (rtd->dai_link->no_pcm) 466 return 0; 467 468 spcm = snd_sof_find_spcm_dai(sdev, rtd); 469 if (!spcm) 470 return -EINVAL; 471 472 dev_dbg(sdev->dev, "pcm: close stream %d dir %d\n", spcm->pcm.pcm_id, 473 substream->stream); 474 475 err = snd_sof_pcm_platform_close(sdev, substream); 476 if (err < 0) { 477 dev_err(sdev->dev, "error: pcm close failed %d\n", 478 err); 479 /* 480 * keep going, no point in preventing the close 481 * from happening 482 */ 483 } 484 485 pm_runtime_mark_last_busy(sdev->dev); 486 487 err = pm_runtime_put_autosuspend(sdev->dev); 488 if (err < 0) 489 dev_err(sdev->dev, "error: pcm close failed to idle %d\n", 490 err); 491 492 return 0; 493 } 494 495 static struct snd_pcm_ops sof_pcm_ops = { 496 .open = sof_pcm_open, 497 .close = sof_pcm_close, 498 .ioctl = snd_pcm_lib_ioctl, 499 .hw_params = sof_pcm_hw_params, 500 .prepare = sof_pcm_prepare, 501 .hw_free = sof_pcm_hw_free, 502 .trigger = sof_pcm_trigger, 503 .pointer = sof_pcm_pointer, 504 .page = snd_pcm_sgbuf_ops_page, 505 }; 506 507 /* 508 * Pre-allocate playback/capture audio buffer pages. 509 * no need to explicitly release memory preallocated by sof_pcm_new in pcm_free 510 * snd_pcm_lib_preallocate_free_for_all() is called by the core. 511 */ 512 static int sof_pcm_new(struct snd_soc_pcm_runtime *rtd) 513 { 514 struct snd_soc_component *component = 515 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 516 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 517 struct snd_sof_pcm *spcm; 518 struct snd_pcm *pcm = rtd->pcm; 519 struct snd_soc_tplg_stream_caps *caps; 520 int stream = SNDRV_PCM_STREAM_PLAYBACK; 521 522 /* find SOF PCM for this RTD */ 523 spcm = snd_sof_find_spcm_dai(sdev, rtd); 524 if (!spcm) { 525 dev_warn(sdev->dev, "warn: can't find PCM with DAI ID %d\n", 526 rtd->dai_link->id); 527 return 0; 528 } 529 530 dev_dbg(sdev->dev, "creating new PCM %s\n", spcm->pcm.pcm_name); 531 532 /* do we need to pre-allocate playback audio buffer pages */ 533 if (!spcm->pcm.playback) 534 goto capture; 535 536 caps = &spcm->pcm.caps[stream]; 537 538 /* pre-allocate playback audio buffer pages */ 539 dev_dbg(sdev->dev, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", 540 caps->name, caps->buffer_size_min, caps->buffer_size_max); 541 542 snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream, 543 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 544 le32_to_cpu(caps->buffer_size_min), 545 le32_to_cpu(caps->buffer_size_max)); 546 capture: 547 stream = SNDRV_PCM_STREAM_CAPTURE; 548 549 /* do we need to pre-allocate capture audio buffer pages */ 550 if (!spcm->pcm.capture) 551 return 0; 552 553 caps = &spcm->pcm.caps[stream]; 554 555 /* pre-allocate capture audio buffer pages */ 556 dev_dbg(sdev->dev, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", 557 caps->name, caps->buffer_size_min, caps->buffer_size_max); 558 559 snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream, 560 SNDRV_DMA_TYPE_DEV_SG, sdev->dev, 561 le32_to_cpu(caps->buffer_size_min), 562 le32_to_cpu(caps->buffer_size_max)); 563 564 return 0; 565 } 566 567 /* fixup the BE DAI link to match any values from topology */ 568 static int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd, 569 struct snd_pcm_hw_params *params) 570 { 571 struct snd_interval *rate = hw_param_interval(params, 572 SNDRV_PCM_HW_PARAM_RATE); 573 struct snd_interval *channels = hw_param_interval(params, 574 SNDRV_PCM_HW_PARAM_CHANNELS); 575 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 576 struct snd_soc_component *component = 577 snd_soc_rtdcom_lookup(rtd, DRV_NAME); 578 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 579 struct snd_sof_dai *dai = 580 snd_sof_find_dai(sdev, (char *)rtd->dai_link->name); 581 582 /* no topology exists for this BE, try a common configuration */ 583 if (!dai) { 584 dev_warn(sdev->dev, "warning: no topology found for BE DAI %s config\n", 585 rtd->dai_link->name); 586 587 /* set 48k, stereo, 16bits by default */ 588 rate->min = 48000; 589 rate->max = 48000; 590 591 channels->min = 2; 592 channels->max = 2; 593 594 snd_mask_none(fmt); 595 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 596 597 return 0; 598 } 599 600 /* read format from topology */ 601 snd_mask_none(fmt); 602 603 switch (dai->comp_dai.config.frame_fmt) { 604 case SOF_IPC_FRAME_S16_LE: 605 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 606 break; 607 case SOF_IPC_FRAME_S24_4LE: 608 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE); 609 break; 610 case SOF_IPC_FRAME_S32_LE: 611 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE); 612 break; 613 default: 614 dev_err(sdev->dev, "error: No available DAI format!\n"); 615 return -EINVAL; 616 } 617 618 /* read rate and channels from topology */ 619 switch (dai->dai_config->type) { 620 case SOF_DAI_INTEL_SSP: 621 rate->min = dai->dai_config->ssp.fsync_rate; 622 rate->max = dai->dai_config->ssp.fsync_rate; 623 channels->min = dai->dai_config->ssp.tdm_slots; 624 channels->max = dai->dai_config->ssp.tdm_slots; 625 626 dev_dbg(sdev->dev, 627 "rate_min: %d rate_max: %d\n", rate->min, rate->max); 628 dev_dbg(sdev->dev, 629 "channels_min: %d channels_max: %d\n", 630 channels->min, channels->max); 631 632 break; 633 case SOF_DAI_INTEL_DMIC: 634 /* DMIC only supports 16 or 32 bit formats */ 635 if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) { 636 dev_err(sdev->dev, 637 "error: invalid fmt %d for DAI type %d\n", 638 dai->comp_dai.config.frame_fmt, 639 dai->dai_config->type); 640 } 641 break; 642 case SOF_DAI_INTEL_HDA: 643 /* do nothing for HDA dai_link */ 644 break; 645 default: 646 dev_err(sdev->dev, "error: invalid DAI type %d\n", 647 dai->dai_config->type); 648 break; 649 } 650 651 return 0; 652 } 653 654 static int sof_pcm_probe(struct snd_soc_component *component) 655 { 656 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 657 struct snd_sof_pdata *plat_data = sdev->pdata; 658 const char *tplg_filename; 659 int ret; 660 661 /* load the default topology */ 662 sdev->component = component; 663 664 tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, 665 "%s/%s", 666 plat_data->tplg_filename_prefix, 667 plat_data->tplg_filename); 668 if (!tplg_filename) 669 return -ENOMEM; 670 671 ret = snd_sof_load_topology(sdev, tplg_filename); 672 if (ret < 0) { 673 dev_err(sdev->dev, "error: failed to load DSP topology %d\n", 674 ret); 675 return ret; 676 } 677 678 /* 679 * Some platforms in SOF, ex: BYT, may not have their platform PM 680 * callbacks set. Increment the usage count so as to 681 * prevent the device from entering runtime suspend. 682 */ 683 if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume) 684 pm_runtime_get_noresume(sdev->dev); 685 686 return ret; 687 } 688 689 static void sof_pcm_remove(struct snd_soc_component *component) 690 { 691 /* remove topology */ 692 snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL); 693 } 694 695 void snd_sof_new_platform_drv(struct snd_sof_dev *sdev) 696 { 697 struct snd_soc_component_driver *pd = &sdev->plat_drv; 698 struct snd_sof_pdata *plat_data = sdev->pdata; 699 const char *drv_name; 700 701 drv_name = plat_data->machine->drv_name; 702 703 pd->name = "sof-audio-component"; 704 pd->probe = sof_pcm_probe; 705 pd->remove = sof_pcm_remove; 706 pd->ops = &sof_pcm_ops; 707 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS) 708 pd->compr_ops = &sof_compressed_ops; 709 #endif 710 pd->pcm_new = sof_pcm_new; 711 pd->ignore_machine = drv_name; 712 pd->be_hw_params_fixup = sof_pcm_dai_link_fixup; 713 pd->be_pcm_base = SOF_BE_PCM_BASE; 714 pd->use_dai_pcm_id = true; 715 pd->topology_name_prefix = "sof"; 716 717 /* increment module refcount when a pcm is opened */ 718 pd->module_get_upon_open = 1; 719 } 720