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 */ 23static int sof_core_debug = IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_FIRMWARE_TRACE); 24module_param_named(sof_debug, sof_core_debug, int, 0444); 25MODULE_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 */ 38bool sof_debug_check_flag(int mask) 39{ 40 if ((sof_core_debug & mask) == mask) 41 return true; 42 43 return false; 44} 45EXPORT_SYMBOL(sof_debug_check_flag); 46 47/* 48 * FW Panic/fault handling. 49 */ 50 51struct sof_panic_msg { 52 u32 id; 53 const char *msg; 54}; 55 56/* standard FW panic types */ 57static 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 */ 87void 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 118out: 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} 124EXPORT_SYMBOL(sof_print_oops_and_stack); 125 126/* Helper to manage DSP state */ 127void 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} 145EXPORT_SYMBOL(sof_set_fw_state); 146 147static struct snd_sof_of_mach *sof_of_machine_select(struct snd_sof_dev *sdev) 148{ 149 struct snd_sof_pdata *sof_pdata = sdev->pdata; 150 const struct sof_dev_desc *desc = sof_pdata->desc; 151 struct snd_sof_of_mach *mach = desc->of_machines; 152 153 if (!mach) 154 return NULL; 155 156 for (; mach->compatible; mach++) { 157 if (of_machine_is_compatible(mach->compatible)) { 158 sof_pdata->tplg_filename = mach->sof_tplg_filename; 159 if (mach->fw_filename) 160 sof_pdata->fw_filename = mach->fw_filename; 161 162 return mach; 163 } 164 } 165 166 return NULL; 167} 168 169/* SOF Driver enumeration */ 170static int sof_machine_check(struct snd_sof_dev *sdev) 171{ 172 struct snd_sof_pdata *sof_pdata = sdev->pdata; 173 const struct sof_dev_desc *desc = sof_pdata->desc; 174 struct snd_soc_acpi_mach *mach; 175 176 if (!IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)) { 177 const struct snd_sof_of_mach *of_mach; 178 179 if (IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC_DEBUG_SUPPORT) && 180 sof_debug_check_flag(SOF_DBG_FORCE_NOCODEC)) 181 goto nocodec; 182 183 /* find machine */ 184 mach = snd_sof_machine_select(sdev); 185 if (mach) { 186 sof_pdata->machine = mach; 187 188 if (sof_pdata->subsystem_id_set) { 189 mach->mach_params.subsystem_vendor = sof_pdata->subsystem_vendor; 190 mach->mach_params.subsystem_device = sof_pdata->subsystem_device; 191 mach->mach_params.subsystem_id_set = true; 192 } 193 194 snd_sof_set_mach_params(mach, sdev); 195 return 0; 196 } 197 198 of_mach = sof_of_machine_select(sdev); 199 if (of_mach) { 200 sof_pdata->of_machine = of_mach; 201 return 0; 202 } 203 204 if (!IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)) { 205 dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n"); 206 return -ENODEV; 207 } 208 } else { 209 dev_warn(sdev->dev, "Force to use nocodec mode\n"); 210 } 211 212nocodec: 213 /* select nocodec mode */ 214 dev_warn(sdev->dev, "Using nocodec machine driver\n"); 215 mach = devm_kzalloc(sdev->dev, sizeof(*mach), GFP_KERNEL); 216 if (!mach) 217 return -ENOMEM; 218 219 mach->drv_name = "sof-nocodec"; 220 if (!sof_pdata->tplg_filename) 221 sof_pdata->tplg_filename = desc->nocodec_tplg_filename; 222 223 sof_pdata->machine = mach; 224 snd_sof_set_mach_params(mach, sdev); 225 226 return 0; 227} 228 229static int sof_select_ipc_and_paths(struct snd_sof_dev *sdev) 230{ 231 struct snd_sof_pdata *plat_data = sdev->pdata; 232 struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; 233 struct sof_loadable_file_profile out_profile; 234 struct device *dev = sdev->dev; 235 int ret; 236 237 if (base_profile->ipc_type != plat_data->desc->ipc_default) 238 dev_info(dev, 239 "Module parameter used, overriding default IPC %d to %d\n", 240 plat_data->desc->ipc_default, base_profile->ipc_type); 241 242 if (base_profile->fw_path) 243 dev_dbg(dev, "Module parameter used, changed fw path to %s\n", 244 base_profile->fw_path); 245 else if (base_profile->fw_path_postfix) 246 dev_dbg(dev, "Path postfix appended to default fw path: %s\n", 247 base_profile->fw_path_postfix); 248 249 if (base_profile->fw_lib_path) 250 dev_dbg(dev, "Module parameter used, changed fw_lib path to %s\n", 251 base_profile->fw_lib_path); 252 else if (base_profile->fw_lib_path_postfix) 253 dev_dbg(dev, "Path postfix appended to default fw_lib path: %s\n", 254 base_profile->fw_lib_path_postfix); 255 256 if (base_profile->fw_name) 257 dev_dbg(dev, "Module parameter used, changed fw filename to %s\n", 258 base_profile->fw_name); 259 260 if (base_profile->tplg_path) 261 dev_dbg(dev, "Module parameter used, changed tplg path to %s\n", 262 base_profile->tplg_path); 263 264 if (base_profile->tplg_name) 265 dev_dbg(dev, "Module parameter used, changed tplg name to %s\n", 266 base_profile->tplg_name); 267 268 ret = sof_create_ipc_file_profile(sdev, base_profile, &out_profile); 269 if (ret) 270 return ret; 271 272 plat_data->ipc_type = out_profile.ipc_type; 273 plat_data->fw_filename = out_profile.fw_name; 274 plat_data->fw_filename_prefix = out_profile.fw_path; 275 plat_data->fw_lib_prefix = out_profile.fw_lib_path; 276 plat_data->tplg_filename_prefix = out_profile.tplg_path; 277 278 return 0; 279} 280 281static int validate_sof_ops(struct snd_sof_dev *sdev) 282{ 283 int ret; 284 285 /* init ops, if necessary */ 286 ret = sof_ops_init(sdev); 287 if (ret < 0) 288 return ret; 289 290 /* check all mandatory ops */ 291 if (!sof_ops(sdev) || !sof_ops(sdev)->probe) { 292 dev_err(sdev->dev, "missing mandatory ops\n"); 293 sof_ops_free(sdev); 294 return -EINVAL; 295 } 296 297 if (!sdev->dspless_mode_selected && 298 (!sof_ops(sdev)->run || !sof_ops(sdev)->block_read || 299 !sof_ops(sdev)->block_write || !sof_ops(sdev)->send_msg || 300 !sof_ops(sdev)->load_firmware || !sof_ops(sdev)->ipc_msg_data)) { 301 dev_err(sdev->dev, "missing mandatory DSP ops\n"); 302 sof_ops_free(sdev); 303 return -EINVAL; 304 } 305 306 return 0; 307} 308 309static int sof_init_sof_ops(struct snd_sof_dev *sdev) 310{ 311 struct snd_sof_pdata *plat_data = sdev->pdata; 312 struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; 313 314 /* check IPC support */ 315 if (!(BIT(base_profile->ipc_type) & plat_data->desc->ipc_supported_mask)) { 316 dev_err(sdev->dev, 317 "ipc_type %d is not supported on this platform, mask is %#x\n", 318 base_profile->ipc_type, plat_data->desc->ipc_supported_mask); 319 return -EINVAL; 320 } 321 322 /* 323 * Save the selected IPC type and a topology name override before 324 * selecting ops since platform code might need this information 325 */ 326 plat_data->ipc_type = base_profile->ipc_type; 327 plat_data->tplg_filename = base_profile->tplg_name; 328 329 return validate_sof_ops(sdev); 330} 331 332static int sof_init_environment(struct snd_sof_dev *sdev) 333{ 334 struct snd_sof_pdata *plat_data = sdev->pdata; 335 struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; 336 int ret; 337 338 /* probe the DSP hardware */ 339 ret = snd_sof_probe(sdev); 340 if (ret < 0) { 341 dev_err(sdev->dev, "failed to probe DSP %d\n", ret); 342 goto err_sof_probe; 343 } 344 345 /* check machine info */ 346 ret = sof_machine_check(sdev); 347 if (ret < 0) { 348 dev_err(sdev->dev, "failed to get machine info %d\n", ret); 349 goto err_machine_check; 350 } 351 352 ret = sof_select_ipc_and_paths(sdev); 353 if (ret) { 354 goto err_machine_check; 355 } else if (plat_data->ipc_type != base_profile->ipc_type) { 356 /* IPC type changed, re-initialize the ops */ 357 sof_ops_free(sdev); 358 359 ret = validate_sof_ops(sdev); 360 if (ret < 0) { 361 snd_sof_remove(sdev); 362 snd_sof_remove_late(sdev); 363 return ret; 364 } 365 } 366 367 return 0; 368 369err_machine_check: 370 snd_sof_remove(sdev); 371err_sof_probe: 372 snd_sof_remove_late(sdev); 373 sof_ops_free(sdev); 374 375 return ret; 376} 377 378/* 379 * FW Boot State Transition Diagram 380 * 381 * +----------------------------------------------------------------------+ 382 * | | 383 * ------------------ ------------------ | 384 * | | | | | 385 * | BOOT_FAILED |<-------| READY_FAILED | | 386 * | |<--+ | | ------------------ | 387 * ------------------ | ------------------ | | | 388 * ^ | ^ | CRASHED |---+ | 389 * | | | | | | | 390 * (FW Boot Timeout) | (FW_READY FAIL) ------------------ | | 391 * | | | ^ | | 392 * | | | |(DSP Panic) | | 393 * ------------------ | | ------------------ | | 394 * | | | | | | | | 395 * | IN_PROGRESS |---------------+------------->| COMPLETE | | | 396 * | | (FW Boot OK) (FW_READY OK) | | | | 397 * ------------------ | ------------------ | | 398 * ^ | | | | 399 * | | | | | 400 * (FW Loading OK) | (System Suspend/Runtime Suspend) 401 * | | | | | 402 * | (FW Loading Fail) | | | 403 * ------------------ | ------------------ | | | 404 * | | | | |<-----+ | | 405 * | PREPARE |---+ | NOT_STARTED |<---------------------+ | 406 * | | | |<--------------------------+ 407 * ------------------ ------------------ 408 * | ^ | ^ 409 * | | | | 410 * | +-----------------------+ | 411 * | (DSP Probe OK) | 412 * | | 413 * | | 414 * +------------------------------------+ 415 * (System Suspend/Runtime Suspend) 416 */ 417 418static int sof_probe_continue(struct snd_sof_dev *sdev) 419{ 420 struct snd_sof_pdata *plat_data = sdev->pdata; 421 int ret; 422 423 /* Initialize loadable file paths and check the environment validity */ 424 ret = sof_init_environment(sdev); 425 if (ret) 426 return ret; 427 428 sof_set_fw_state(sdev, SOF_FW_BOOT_PREPARE); 429 430 /* set up platform component driver */ 431 snd_sof_new_platform_drv(sdev); 432 433 if (sdev->dspless_mode_selected) { 434 sof_set_fw_state(sdev, SOF_DSPLESS_MODE); 435 goto skip_dsp_init; 436 } 437 438 /* register any debug/trace capabilities */ 439 ret = snd_sof_dbg_init(sdev); 440 if (ret < 0) { 441 /* 442 * debugfs issues are suppressed in snd_sof_dbg_init() since 443 * we cannot rely on debugfs 444 * here we trap errors due to memory allocation only. 445 */ 446 dev_err(sdev->dev, "error: failed to init DSP trace/debug %d\n", 447 ret); 448 goto dbg_err; 449 } 450 451 /* init the IPC */ 452 sdev->ipc = snd_sof_ipc_init(sdev); 453 if (!sdev->ipc) { 454 ret = -ENOMEM; 455 dev_err(sdev->dev, "error: failed to init DSP IPC %d\n", ret); 456 goto ipc_err; 457 } 458 459 /* load the firmware */ 460 ret = snd_sof_load_firmware(sdev); 461 if (ret < 0) { 462 dev_err(sdev->dev, "error: failed to load DSP firmware %d\n", 463 ret); 464 sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED); 465 goto fw_load_err; 466 } 467 468 sof_set_fw_state(sdev, SOF_FW_BOOT_IN_PROGRESS); 469 470 /* 471 * Boot the firmware. The FW boot status will be modified 472 * in snd_sof_run_firmware() depending on the outcome. 473 */ 474 ret = snd_sof_run_firmware(sdev); 475 if (ret < 0) { 476 dev_err(sdev->dev, "error: failed to boot DSP firmware %d\n", 477 ret); 478 sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED); 479 goto fw_run_err; 480 } 481 482 if (sof_debug_check_flag(SOF_DBG_ENABLE_TRACE)) { 483 sdev->fw_trace_is_supported = true; 484 485 /* init firmware tracing */ 486 ret = sof_fw_trace_init(sdev); 487 if (ret < 0) { 488 /* non fatal */ 489 dev_warn(sdev->dev, "failed to initialize firmware tracing %d\n", 490 ret); 491 } 492 } else { 493 dev_dbg(sdev->dev, "SOF firmware trace disabled\n"); 494 } 495 496skip_dsp_init: 497 /* hereafter all FW boot flows are for PM reasons */ 498 sdev->first_boot = false; 499 500 /* now register audio DSP platform driver and dai */ 501 ret = devm_snd_soc_register_component(sdev->dev, &sdev->plat_drv, 502 sof_ops(sdev)->drv, 503 sof_ops(sdev)->num_drv); 504 if (ret < 0) { 505 dev_err(sdev->dev, 506 "error: failed to register DSP DAI driver %d\n", ret); 507 goto fw_trace_err; 508 } 509 510 ret = snd_sof_machine_register(sdev, plat_data); 511 if (ret < 0) { 512 dev_err(sdev->dev, 513 "error: failed to register machine driver %d\n", ret); 514 goto fw_trace_err; 515 } 516 517 ret = sof_register_clients(sdev); 518 if (ret < 0) { 519 dev_err(sdev->dev, "failed to register clients %d\n", ret); 520 goto sof_machine_err; 521 } 522 523 /* 524 * Some platforms in SOF, ex: BYT, may not have their platform PM 525 * callbacks set. Increment the usage count so as to 526 * prevent the device from entering runtime suspend. 527 */ 528 if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume) 529 pm_runtime_get_noresume(sdev->dev); 530 531 if (plat_data->sof_probe_complete) 532 plat_data->sof_probe_complete(sdev->dev); 533 534 sdev->probe_completed = true; 535 536 return 0; 537 538sof_machine_err: 539 snd_sof_machine_unregister(sdev, plat_data); 540fw_trace_err: 541 sof_fw_trace_free(sdev); 542fw_run_err: 543 snd_sof_fw_unload(sdev); 544fw_load_err: 545 snd_sof_ipc_free(sdev); 546ipc_err: 547dbg_err: 548 snd_sof_free_debug(sdev); 549 snd_sof_remove(sdev); 550 snd_sof_remove_late(sdev); 551 sof_ops_free(sdev); 552 553 /* all resources freed, update state to match */ 554 sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED); 555 sdev->first_boot = true; 556 557 return ret; 558} 559 560static void sof_probe_work(struct work_struct *work) 561{ 562 struct snd_sof_dev *sdev = 563 container_of(work, struct snd_sof_dev, probe_work); 564 int ret; 565 566 ret = sof_probe_continue(sdev); 567 if (ret < 0) { 568 /* errors cannot be propagated, log */ 569 dev_err(sdev->dev, "error: %s failed err: %d\n", __func__, ret); 570 } 571} 572 573int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data) 574{ 575 struct snd_sof_dev *sdev; 576 int ret; 577 578 sdev = devm_kzalloc(dev, sizeof(*sdev), GFP_KERNEL); 579 if (!sdev) 580 return -ENOMEM; 581 582 /* initialize sof device */ 583 sdev->dev = dev; 584 585 /* initialize default DSP power state */ 586 sdev->dsp_power_state.state = SOF_DSP_PM_D0; 587 588 sdev->pdata = plat_data; 589 sdev->first_boot = true; 590 dev_set_drvdata(dev, sdev); 591 592 if (sof_core_debug) 593 dev_info(dev, "sof_debug value: %#x\n", sof_core_debug); 594 595 if (sof_debug_check_flag(SOF_DBG_DSPLESS_MODE)) { 596 if (plat_data->desc->dspless_mode_supported) { 597 dev_info(dev, "Switching to DSPless mode\n"); 598 sdev->dspless_mode_selected = true; 599 } else { 600 dev_info(dev, "DSPless mode is not supported by the platform\n"); 601 } 602 } 603 604 /* Initialize sof_ops based on the initial selected IPC version */ 605 ret = sof_init_sof_ops(sdev); 606 if (ret) 607 return ret; 608 609 INIT_LIST_HEAD(&sdev->pcm_list); 610 INIT_LIST_HEAD(&sdev->kcontrol_list); 611 INIT_LIST_HEAD(&sdev->widget_list); 612 INIT_LIST_HEAD(&sdev->pipeline_list); 613 INIT_LIST_HEAD(&sdev->dai_list); 614 INIT_LIST_HEAD(&sdev->dai_link_list); 615 INIT_LIST_HEAD(&sdev->route_list); 616 INIT_LIST_HEAD(&sdev->ipc_client_list); 617 INIT_LIST_HEAD(&sdev->ipc_rx_handler_list); 618 INIT_LIST_HEAD(&sdev->fw_state_handler_list); 619 spin_lock_init(&sdev->ipc_lock); 620 spin_lock_init(&sdev->hw_lock); 621 mutex_init(&sdev->power_state_access); 622 mutex_init(&sdev->ipc_client_mutex); 623 mutex_init(&sdev->client_event_handler_mutex); 624 625 /* set default timeouts if none provided */ 626 if (plat_data->desc->ipc_timeout == 0) 627 sdev->ipc_timeout = TIMEOUT_DEFAULT_IPC_MS; 628 else 629 sdev->ipc_timeout = plat_data->desc->ipc_timeout; 630 if (plat_data->desc->boot_timeout == 0) 631 sdev->boot_timeout = TIMEOUT_DEFAULT_BOOT_MS; 632 else 633 sdev->boot_timeout = plat_data->desc->boot_timeout; 634 635 sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED); 636 637 /* 638 * first pass of probe which isn't allowed to run in a work-queue, 639 * typically to rely on -EPROBE_DEFER dependencies 640 */ 641 ret = snd_sof_probe_early(sdev); 642 if (ret < 0) 643 return ret; 644 645 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) { 646 INIT_WORK(&sdev->probe_work, sof_probe_work); 647 schedule_work(&sdev->probe_work); 648 return 0; 649 } 650 651 return sof_probe_continue(sdev); 652} 653EXPORT_SYMBOL(snd_sof_device_probe); 654 655bool snd_sof_device_probe_completed(struct device *dev) 656{ 657 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 658 659 return sdev->probe_completed; 660} 661EXPORT_SYMBOL(snd_sof_device_probe_completed); 662 663int snd_sof_device_remove(struct device *dev) 664{ 665 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 666 struct snd_sof_pdata *pdata = sdev->pdata; 667 int ret; 668 bool aborted = false; 669 670 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) 671 aborted = cancel_work_sync(&sdev->probe_work); 672 673 /* 674 * Unregister any registered client device first before IPC and debugfs 675 * to allow client drivers to be removed cleanly 676 */ 677 sof_unregister_clients(sdev); 678 679 /* 680 * Unregister machine driver. This will unbind the snd_card which 681 * will remove the component driver and unload the topology 682 * before freeing the snd_card. 683 */ 684 snd_sof_machine_unregister(sdev, pdata); 685 686 /* 687 * Balance the runtime pm usage count in case we are faced with an 688 * exception and we forcably prevented D3 power state to preserve 689 * context 690 */ 691 if (sdev->d3_prevented) { 692 sdev->d3_prevented = false; 693 pm_runtime_put_noidle(sdev->dev); 694 } 695 696 if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) { 697 sof_fw_trace_free(sdev); 698 ret = snd_sof_dsp_power_down_notify(sdev); 699 if (ret < 0) 700 dev_warn(dev, "error: %d failed to prepare DSP for device removal", 701 ret); 702 703 snd_sof_ipc_free(sdev); 704 snd_sof_free_debug(sdev); 705 snd_sof_remove(sdev); 706 snd_sof_remove_late(sdev); 707 sof_ops_free(sdev); 708 } else if (aborted) { 709 /* probe_work never ran */ 710 snd_sof_remove_late(sdev); 711 sof_ops_free(sdev); 712 } 713 714 /* release firmware */ 715 snd_sof_fw_unload(sdev); 716 717 return 0; 718} 719EXPORT_SYMBOL(snd_sof_device_remove); 720 721int snd_sof_device_shutdown(struct device *dev) 722{ 723 struct snd_sof_dev *sdev = dev_get_drvdata(dev); 724 725 if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) 726 cancel_work_sync(&sdev->probe_work); 727 728 if (sdev->fw_state == SOF_FW_BOOT_COMPLETE) { 729 sof_fw_trace_free(sdev); 730 return snd_sof_shutdown(sdev); 731 } 732 733 return 0; 734} 735EXPORT_SYMBOL(snd_sof_device_shutdown); 736 737/* Machine driver registering and unregistering */ 738int sof_machine_register(struct snd_sof_dev *sdev, void *pdata) 739{ 740 struct snd_sof_pdata *plat_data = pdata; 741 const char *drv_name; 742 const void *mach; 743 int size; 744 745 drv_name = plat_data->machine->drv_name; 746 mach = plat_data->machine; 747 size = sizeof(*plat_data->machine); 748 749 /* register machine driver, pass machine info as pdata */ 750 plat_data->pdev_mach = 751 platform_device_register_data(sdev->dev, drv_name, 752 PLATFORM_DEVID_NONE, mach, size); 753 if (IS_ERR(plat_data->pdev_mach)) 754 return PTR_ERR(plat_data->pdev_mach); 755 756 dev_dbg(sdev->dev, "created machine %s\n", 757 dev_name(&plat_data->pdev_mach->dev)); 758 759 return 0; 760} 761EXPORT_SYMBOL(sof_machine_register); 762 763void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata) 764{ 765 struct snd_sof_pdata *plat_data = pdata; 766 767 platform_device_unregister(plat_data->pdev_mach); 768} 769EXPORT_SYMBOL(sof_machine_unregister); 770 771MODULE_AUTHOR("Liam Girdwood"); 772MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core"); 773MODULE_LICENSE("Dual BSD/GPL"); 774MODULE_ALIAS("platform:sof-audio"); 775MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT); 776