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 11 #include <linux/firmware.h> 12 #include <linux/module.h> 13 #include <sound/soc.h> 14 #include <sound/sof.h> 15 #include "sof-priv.h" 16 #include "sof-of-dev.h" 17 #include "ops.h" 18 19 #define CREATE_TRACE_POINTS 20 #include <trace/events/sof.h> 21 22 /* see SOF_DBG_ flags */ 23 static int sof_core_debug = IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_FIRMWARE_TRACE); 24 module_param_named(sof_debug, sof_core_debug, int, 0444); 25 MODULE_PARM_DESC(sof_debug, "SOF core debug options (0x0 all off)"); 26 27 /* SOF defaults if not provided by the platform in ms */ 28 #define TIMEOUT_DEFAULT_IPC_MS 500 29 #define TIMEOUT_DEFAULT_BOOT_MS 2000 30 31 /** 32 * sof_debug_check_flag - check if a given flag(s) is set in sof_core_debug 33 * @mask: Flag or combination of flags to check 34 * 35 * Returns true if all bits set in mask is also set in sof_core_debug, otherwise 36 * false 37 */ 38 bool sof_debug_check_flag(int mask) 39 { 40 if ((sof_core_debug & mask) == mask) 41 return true; 42 43 return false; 44 } 45 EXPORT_SYMBOL(sof_debug_check_flag); 46 47 /* 48 * FW Panic/fault handling. 49 */ 50 51 struct sof_panic_msg { 52 u32 id; 53 const char *msg; 54 }; 55 56 /* standard FW panic types */ 57 static const struct sof_panic_msg panic_msg[] = { 58 {SOF_IPC_PANIC_MEM, "out of memory"}, 59 {SOF_IPC_PANIC_WORK, "work subsystem init failed"}, 60 {SOF_IPC_PANIC_IPC, "IPC subsystem init failed"}, 61 {SOF_IPC_PANIC_ARCH, "arch init failed"}, 62 {SOF_IPC_PANIC_PLATFORM, "platform init failed"}, 63 {SOF_IPC_PANIC_TASK, "scheduler init failed"}, 64 {SOF_IPC_PANIC_EXCEPTION, "runtime exception"}, 65 {SOF_IPC_PANIC_DEADLOCK, "deadlock"}, 66 {SOF_IPC_PANIC_STACK, "stack overflow"}, 67 {SOF_IPC_PANIC_IDLE, "can't enter idle"}, 68 {SOF_IPC_PANIC_WFI, "invalid wait state"}, 69 {SOF_IPC_PANIC_ASSERT, "assertion failed"}, 70 }; 71 72 /** 73 * sof_print_oops_and_stack - Handle the printing of DSP oops and stack trace 74 * @sdev: Pointer to the device's sdev 75 * @level: prink log level to use for the printing 76 * @panic_code: the panic code 77 * @tracep_code: tracepoint code 78 * @oops: Pointer to DSP specific oops data 79 * @panic_info: Pointer to the received panic information message 80 * @stack: Pointer to the call stack data 81 * @stack_words: Number of words in the stack data 82 * 83 * helper to be called from .dbg_dump callbacks. No error code is 84 * provided, it's left as an exercise for the caller of .dbg_dump 85 * (typically IPC or loader) 86 */ 87 void sof_print_oops_and_stack(struct snd_sof_dev *sdev, const char *level, 88 u32 panic_code, u32 tracep_code, void *oops, 89 struct sof_ipc_panic_info *panic_info, 90 void *stack, size_t stack_words) 91 { 92 u32 code; 93 int i; 94 95 /* is firmware dead ? */ 96 if ((panic_code & SOF_IPC_PANIC_MAGIC_MASK) != SOF_IPC_PANIC_MAGIC) { 97 dev_printk(level, sdev->dev, "unexpected fault %#010x trace %#010x\n", 98 panic_code, tracep_code); 99 return; /* no fault ? */ 100 } 101 102 code = panic_code & (SOF_IPC_PANIC_MAGIC_MASK | SOF_IPC_PANIC_CODE_MASK); 103 104 for (i = 0; i < ARRAY_SIZE(panic_msg); i++) { 105 if (panic_msg[i].id == code) { 106 dev_printk(level, sdev->dev, "reason: %s (%#x)\n", 107 panic_msg[i].msg, code & SOF_IPC_PANIC_CODE_MASK); 108 dev_printk(level, sdev->dev, "trace point: %#010x\n", tracep_code); 109 goto out; 110 } 111 } 112 113 /* unknown error */ 114 dev_printk(level, sdev->dev, "unknown panic code: %#x\n", 115 code & SOF_IPC_PANIC_CODE_MASK); 116 dev_printk(level, sdev->dev, "trace point: %#010x\n", tracep_code); 117 118 out: 119 dev_printk(level, sdev->dev, "panic at %s:%d\n", panic_info->filename, 120 panic_info->linenum); 121 sof_oops(sdev, level, oops); 122 sof_stack(sdev, level, oops, stack, stack_words); 123 } 124 EXPORT_SYMBOL(sof_print_oops_and_stack); 125 126 /* Helper to manage DSP state */ 127 void sof_set_fw_state(struct snd_sof_dev *sdev, enum sof_fw_state new_state) 128 { 129 if (sdev->fw_state == new_state) 130 return; 131 132 dev_dbg(sdev->dev, "fw_state change: %d -> %d\n", sdev->fw_state, new_state); 133 sdev->fw_state = new_state; 134 135 switch (new_state) { 136 case SOF_FW_BOOT_NOT_STARTED: 137 case SOF_FW_BOOT_COMPLETE: 138 case SOF_FW_CRASHED: 139 sof_client_fw_state_dispatcher(sdev); 140 fallthrough; 141 default: 142 break; 143 } 144 } 145 EXPORT_SYMBOL(sof_set_fw_state); 146 147 /* SOF Driver enumeration */ 148 static int sof_machine_check(struct snd_sof_dev *sdev) 149 { 150 struct snd_sof_pdata *sof_pdata = sdev->pdata; 151 const struct sof_dev_desc *desc = sof_pdata->desc; 152 struct snd_soc_acpi_mach *mach; 153 154 if (!IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)) { 155 const struct snd_sof_of_mach *of_mach; 156 157 if (IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC_DEBUG_SUPPORT) && 158 sof_debug_check_flag(SOF_DBG_FORCE_NOCODEC)) 159 goto nocodec; 160 161 /* find machine */ 162 mach = snd_sof_machine_select(sdev); 163 if (mach) { 164 sof_pdata->machine = mach; 165 166 if (sof_pdata->subsystem_id_set) { 167 mach->mach_params.subsystem_vendor = sof_pdata->subsystem_vendor; 168 mach->mach_params.subsystem_device = sof_pdata->subsystem_device; 169 mach->mach_params.subsystem_id_set = true; 170 } 171 172 snd_sof_set_mach_params(mach, sdev); 173 return 0; 174 } 175 176 of_mach = sof_of_machine_select(sdev); 177 if (of_mach) { 178 sof_pdata->of_machine = of_mach; 179 return 0; 180 } 181 182 if (!IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)) { 183 dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n"); 184 return -ENODEV; 185 } 186 } else { 187 dev_warn(sdev->dev, "Force to use nocodec mode\n"); 188 } 189 190 nocodec: 191 /* select nocodec mode */ 192 dev_warn(sdev->dev, "Using nocodec machine driver\n"); 193 mach = devm_kzalloc(sdev->dev, sizeof(*mach), GFP_KERNEL); 194 if (!mach) 195 return -ENOMEM; 196 197 mach->drv_name = "sof-nocodec"; 198 if (!sof_pdata->tplg_filename) 199 sof_pdata->tplg_filename = desc->nocodec_tplg_filename; 200 201 sof_pdata->machine = mach; 202 snd_sof_set_mach_params(mach, sdev); 203 204 return 0; 205 } 206 207 static int sof_select_ipc_and_paths(struct snd_sof_dev *sdev) 208 { 209 struct snd_sof_pdata *plat_data = sdev->pdata; 210 struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; 211 struct sof_loadable_file_profile out_profile; 212 struct device *dev = sdev->dev; 213 int ret; 214 215 /* check IPC support */ 216 if (!(BIT(base_profile->ipc_type) & plat_data->desc->ipc_supported_mask)) { 217 dev_err(dev, 218 "ipc_type %d is not supported on this platform, mask is %#x\n", 219 base_profile->ipc_type, plat_data->desc->ipc_supported_mask); 220 return -EINVAL; 221 } 222 223 if (base_profile->ipc_type != plat_data->desc->ipc_default) 224 dev_info(dev, 225 "Module parameter used, overriding default IPC %d to %d\n", 226 plat_data->desc->ipc_default, base_profile->ipc_type); 227 228 if (base_profile->fw_path) 229 dev_dbg(dev, "Module parameter used, changed fw path to %s\n", 230 base_profile->fw_path); 231 else if (base_profile->fw_path_postfix) 232 dev_dbg(dev, "Path postfix appended to default fw path: %s\n", 233 base_profile->fw_path_postfix); 234 235 if (base_profile->fw_lib_path) 236 dev_dbg(dev, "Module parameter used, changed fw_lib path to %s\n", 237 base_profile->fw_lib_path); 238 else if (base_profile->fw_lib_path_postfix) 239 dev_dbg(dev, "Path postfix appended to default fw_lib path: %s\n", 240 base_profile->fw_lib_path_postfix); 241 242 if (base_profile->fw_name) 243 dev_dbg(dev, "Module parameter used, changed fw filename to %s\n", 244 base_profile->fw_name); 245 246 if (base_profile->tplg_path) 247 dev_dbg(dev, "Module parameter used, changed tplg path to %s\n", 248 base_profile->tplg_path); 249 250 if (base_profile->tplg_name) 251 dev_dbg(dev, "Module parameter used, changed tplg name to %s\n", 252 base_profile->tplg_name); 253 254 ret = sof_create_ipc_file_profile(sdev, base_profile, &out_profile); 255 if (ret) 256 return ret; 257 258 plat_data->ipc_type = out_profile.ipc_type; 259 plat_data->fw_filename = out_profile.fw_name; 260 plat_data->fw_filename_prefix = out_profile.fw_path; 261 plat_data->fw_lib_prefix = out_profile.fw_lib_path; 262 plat_data->tplg_filename_prefix = out_profile.tplg_path; 263 plat_data->tplg_filename = out_profile.tplg_name; 264 265 return 0; 266 } 267 268 /* 269 * FW Boot State Transition Diagram 270 * 271 * +----------------------------------------------------------------------+ 272 * | | 273 * ------------------ ------------------ | 274 * | | | | | 275 * | BOOT_FAILED |<-------| READY_FAILED | | 276 * | |<--+ | | ------------------ | 277 * ------------------ | ------------------ | | | 278 * ^ | ^ | CRASHED |---+ | 279 * | | | | | | | 280 * (FW Boot Timeout) | (FW_READY FAIL) ------------------ | | 281 * | | | ^ | | 282 * | | | |(DSP Panic) | | 283 * ------------------ | | ------------------ | | 284 * | | | | | | | | 285 * | IN_PROGRESS |---------------+------------->| COMPLETE | | | 286 * | | (FW Boot OK) (FW_READY OK) | | | | 287 * ------------------ | ------------------ | | 288 * ^ | | | | 289 * | | | | | 290 * (FW Loading OK) | (System Suspend/Runtime Suspend) 291 * | | | | | 292 * | (FW Loading Fail) | | | 293 * ------------------ | ------------------ | | | 294 * | | | | |<-----+ | | 295 * | PREPARE |---+ | NOT_STARTED |<---------------------+ | 296 * | | | |<--------------------------+ 297 * ------------------ ------------------ 298 * | ^ | ^ 299 * | | | | 300 * | +-----------------------+ | 301 * | (DSP Probe OK) | 302 * | | 303 * | | 304 * +------------------------------------+ 305 * (System Suspend/Runtime Suspend) 306 */ 307 308 static int sof_probe_continue(struct snd_sof_dev *sdev) 309 { 310 struct snd_sof_pdata *plat_data = sdev->pdata; 311 int ret; 312 313 /* probe the DSP hardware */ 314 ret = snd_sof_probe(sdev); 315 if (ret < 0) { 316 dev_err(sdev->dev, "error: failed to probe DSP %d\n", ret); 317 goto probe_err; 318 } 319 320 sof_set_fw_state(sdev, SOF_FW_BOOT_PREPARE); 321 322 /* check machine info */ 323 ret = sof_machine_check(sdev); 324 if (ret < 0) { 325 dev_err(sdev->dev, "error: failed to get machine info %d\n", 326 ret); 327 goto dsp_err; 328 } 329 330 /* set up platform component driver */ 331 snd_sof_new_platform_drv(sdev); 332 333 if (sdev->dspless_mode_selected) { 334 sof_set_fw_state(sdev, SOF_DSPLESS_MODE); 335 goto skip_dsp_init; 336 } 337 338 /* register any debug/trace capabilities */ 339 ret = snd_sof_dbg_init(sdev); 340 if (ret < 0) { 341 /* 342 * debugfs issues are suppressed in snd_sof_dbg_init() since 343 * we cannot rely on debugfs 344 * here we trap errors due to memory allocation only. 345 */ 346 dev_err(sdev->dev, "error: failed to init DSP trace/debug %d\n", 347 ret); 348 goto dbg_err; 349 } 350 351 /* init the IPC */ 352 sdev->ipc = snd_sof_ipc_init(sdev); 353 if (!sdev->ipc) { 354 ret = -ENOMEM; 355 dev_err(sdev->dev, "error: failed to init DSP IPC %d\n", ret); 356 goto ipc_err; 357 } 358 359 /* load the firmware */ 360 ret = snd_sof_load_firmware(sdev); 361 if (ret < 0) { 362 dev_err(sdev->dev, "error: failed to load DSP firmware %d\n", 363 ret); 364 sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED); 365 goto fw_load_err; 366 } 367 368 sof_set_fw_state(sdev, SOF_FW_BOOT_IN_PROGRESS); 369 370 /* 371 * Boot the firmware. The FW boot status will be modified 372 * in snd_sof_run_firmware() depending on the outcome. 373 */ 374 ret = snd_sof_run_firmware(sdev); 375 if (ret < 0) { 376 dev_err(sdev->dev, "error: failed to boot DSP firmware %d\n", 377 ret); 378 sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED); 379 goto fw_run_err; 380 } 381 382 if (sof_debug_check_flag(SOF_DBG_ENABLE_TRACE)) { 383 sdev->fw_trace_is_supported = true; 384 385 /* init firmware tracing */ 386 ret = sof_fw_trace_init(sdev); 387 if (ret < 0) { 388 /* non fatal */ 389 dev_warn(sdev->dev, "failed to initialize firmware tracing %d\n", 390 ret); 391 } 392 } else { 393 dev_dbg(sdev->dev, "SOF firmware trace disabled\n"); 394 } 395 396 skip_dsp_init: 397 /* hereafter all FW boot flows are for PM reasons */ 398 sdev->first_boot = false; 399 400 /* now register audio DSP platform driver and dai */ 401 ret = devm_snd_soc_register_component(sdev->dev, &sdev->plat_drv, 402 sof_ops(sdev)->drv, 403 sof_ops(sdev)->num_drv); 404 if (ret < 0) { 405 dev_err(sdev->dev, 406 "error: failed to register DSP DAI driver %d\n", ret); 407 goto fw_trace_err; 408 } 409 410 ret = snd_sof_machine_register(sdev, plat_data); 411 if (ret < 0) { 412 dev_err(sdev->dev, 413 "error: failed to register machine driver %d\n", ret); 414 goto fw_trace_err; 415 } 416 417 ret = sof_register_clients(sdev); 418 if (ret < 0) { 419 dev_err(sdev->dev, "failed to register clients %d\n", ret); 420 goto sof_machine_err; 421 } 422 423 /* 424 * Some platforms in SOF, ex: BYT, may not have their platform PM 425 * callbacks set. Increment the usage count so as to 426 * prevent the device from entering runtime suspend. 427 */ 428 if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume) 429 pm_runtime_get_noresume(sdev->dev); 430 431 if (plat_data->sof_probe_complete) 432 plat_data->sof_probe_complete(sdev->dev); 433 434 sdev->probe_completed = true; 435 436 return 0; 437 438 sof_machine_err: 439 snd_sof_machine_unregister(sdev, plat_data); 440 fw_trace_err: 441 sof_fw_trace_free(sdev); 442 fw_run_err: 443 snd_sof_fw_unload(sdev); 444 fw_load_err: 445 snd_sof_ipc_free(sdev); 446 ipc_err: 447 dbg_err: 448 snd_sof_free_debug(sdev); 449 dsp_err: 450 snd_sof_remove(sdev); 451 probe_err: 452 snd_sof_remove_late(sdev); 453 sof_ops_free(sdev); 454 455 /* all resources freed, update state to match */ 456 sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED); 457 sdev->first_boot = true; 458 459 return ret; 460 } 461 462 static void sof_probe_work(struct work_struct *work) 463 { 464 struct snd_sof_dev *sdev = 465 container_of(work, struct snd_sof_dev, probe_work); 466 int ret; 467 468 ret = sof_probe_continue(sdev); 469 if (ret < 0) { 470 /* errors cannot be propagated, log */ 471 dev_err(sdev->dev, "error: %s failed err: %d\n", __func__, ret); 472 } 473 } 474 475 int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data) 476 { 477 struct snd_sof_dev *sdev; 478 int ret; 479 480 sdev = devm_kzalloc(dev, sizeof(*sdev), GFP_KERNEL); 481 if (!sdev) 482 return -ENOMEM; 483 484 /* initialize sof device */ 485 sdev->dev = dev; 486 487 /* initialize default DSP power state */ 488 sdev->dsp_power_state.state = SOF_DSP_PM_D0; 489 490 sdev->pdata = plat_data; 491 sdev->first_boot = true; 492 dev_set_drvdata(dev, sdev); 493 494 if (sof_core_debug) 495 dev_info(dev, "sof_debug value: %#x\n", sof_core_debug); 496 497 if (sof_debug_check_flag(SOF_DBG_DSPLESS_MODE)) { 498 if (plat_data->desc->dspless_mode_supported) { 499 dev_info(dev, "Switching to DSPless mode\n"); 500 sdev->dspless_mode_selected = true; 501 } else { 502 dev_info(dev, "DSPless mode is not supported by the platform\n"); 503 } 504 } 505 506 ret = sof_select_ipc_and_paths(sdev); 507 if (ret) 508 return ret; 509 510 /* init ops, if necessary */ 511 ret = sof_ops_init(sdev); 512 if (ret < 0) 513 return ret; 514 515 /* check all mandatory ops */ 516 if (!sof_ops(sdev) || !sof_ops(sdev)->probe) { 517 sof_ops_free(sdev); 518 dev_err(dev, "missing mandatory ops\n"); 519 return -EINVAL; 520 } 521 522 if (!sdev->dspless_mode_selected && 523 (!sof_ops(sdev)->run || !sof_ops(sdev)->block_read || 524 !sof_ops(sdev)->block_write || !sof_ops(sdev)->send_msg || 525 !sof_ops(sdev)->load_firmware || !sof_ops(sdev)->ipc_msg_data)) { 526 sof_ops_free(sdev); 527 dev_err(dev, "missing mandatory DSP ops\n"); 528 return -EINVAL; 529 } 530 531 INIT_LIST_HEAD(&sdev->pcm_list); 532 INIT_LIST_HEAD(&sdev->kcontrol_list); 533 INIT_LIST_HEAD(&sdev->widget_list); 534 INIT_LIST_HEAD(&sdev->pipeline_list); 535 INIT_LIST_HEAD(&sdev->dai_list); 536 INIT_LIST_HEAD(&sdev->dai_link_list); 537 INIT_LIST_HEAD(&sdev->route_list); 538 INIT_LIST_HEAD(&sdev->ipc_client_list); 539 INIT_LIST_HEAD(&sdev->ipc_rx_handler_list); 540 INIT_LIST_HEAD(&sdev->fw_state_handler_list); 541 spin_lock_init(&sdev->ipc_lock); 542 spin_lock_init(&sdev->hw_lock); 543 mutex_init(&sdev->power_state_access); 544 mutex_init(&sdev->ipc_client_mutex); 545 mutex_init(&sdev->client_event_handler_mutex); 546 547 /* set default timeouts if none provided */ 548 if (plat_data->desc->ipc_timeout == 0) 549 sdev->ipc_timeout = TIMEOUT_DEFAULT_IPC_MS; 550 else 551 sdev->ipc_timeout = plat_data->desc->ipc_timeout; 552 if (plat_data->desc->boot_timeout == 0) 553 sdev->boot_timeout = TIMEOUT_DEFAULT_BOOT_MS; 554 else 555 sdev->boot_timeout = plat_data->desc->boot_timeout; 556 557 sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED); 558 559 /* 560 * first pass of probe which isn't allowed to run in a work-queue, 561 * typically to rely on -EPROBE_DEFER dependencies 562 */ 563 ret = snd_sof_probe_early(sdev); 564 if (ret < 0) 565 return ret; 566 567 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) { 568 INIT_WORK(&sdev->probe_work, sof_probe_work); 569 schedule_work(&sdev->probe_work); 570 return 0; 571 } 572 573 return sof_probe_continue(sdev); 574 } 575 EXPORT_SYMBOL(snd_sof_device_probe); 576 577 bool snd_sof_device_probe_completed(struct device *dev) 578 { 579 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 580 581 return sdev->probe_completed; 582 } 583 EXPORT_SYMBOL(snd_sof_device_probe_completed); 584 585 int snd_sof_device_remove(struct device *dev) 586 { 587 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 588 struct snd_sof_pdata *pdata = sdev->pdata; 589 int ret; 590 bool aborted = false; 591 592 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) 593 aborted = cancel_work_sync(&sdev->probe_work); 594 595 /* 596 * Unregister any registered client device first before IPC and debugfs 597 * to allow client drivers to be removed cleanly 598 */ 599 sof_unregister_clients(sdev); 600 601 /* 602 * Unregister machine driver. This will unbind the snd_card which 603 * will remove the component driver and unload the topology 604 * before freeing the snd_card. 605 */ 606 snd_sof_machine_unregister(sdev, pdata); 607 608 if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) { 609 sof_fw_trace_free(sdev); 610 ret = snd_sof_dsp_power_down_notify(sdev); 611 if (ret < 0) 612 dev_warn(dev, "error: %d failed to prepare DSP for device removal", 613 ret); 614 615 snd_sof_ipc_free(sdev); 616 snd_sof_free_debug(sdev); 617 snd_sof_remove(sdev); 618 snd_sof_remove_late(sdev); 619 sof_ops_free(sdev); 620 } else if (aborted) { 621 /* probe_work never ran */ 622 snd_sof_remove_late(sdev); 623 sof_ops_free(sdev); 624 } 625 626 /* release firmware */ 627 snd_sof_fw_unload(sdev); 628 629 return 0; 630 } 631 EXPORT_SYMBOL(snd_sof_device_remove); 632 633 int snd_sof_device_shutdown(struct device *dev) 634 { 635 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 636 637 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) 638 cancel_work_sync(&sdev->probe_work); 639 640 if (sdev->fw_state == SOF_FW_BOOT_COMPLETE) { 641 sof_fw_trace_free(sdev); 642 return snd_sof_shutdown(sdev); 643 } 644 645 return 0; 646 } 647 EXPORT_SYMBOL(snd_sof_device_shutdown); 648 649 /* Machine driver registering and unregistering */ 650 int sof_machine_register(struct snd_sof_dev *sdev, void *pdata) 651 { 652 struct snd_sof_pdata *plat_data = pdata; 653 const char *drv_name; 654 const void *mach; 655 int size; 656 657 drv_name = plat_data->machine->drv_name; 658 mach = plat_data->machine; 659 size = sizeof(*plat_data->machine); 660 661 /* register machine driver, pass machine info as pdata */ 662 plat_data->pdev_mach = 663 platform_device_register_data(sdev->dev, drv_name, 664 PLATFORM_DEVID_NONE, mach, size); 665 if (IS_ERR(plat_data->pdev_mach)) 666 return PTR_ERR(plat_data->pdev_mach); 667 668 dev_dbg(sdev->dev, "created machine %s\n", 669 dev_name(&plat_data->pdev_mach->dev)); 670 671 return 0; 672 } 673 EXPORT_SYMBOL(sof_machine_register); 674 675 void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata) 676 { 677 struct snd_sof_pdata *plat_data = pdata; 678 679 platform_device_unregister(plat_data->pdev_mach); 680 } 681 EXPORT_SYMBOL(sof_machine_unregister); 682 683 MODULE_AUTHOR("Liam Girdwood"); 684 MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core"); 685 MODULE_LICENSE("Dual BSD/GPL"); 686 MODULE_ALIAS("platform:sof-audio"); 687 MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT); 688