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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 or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2018 Intel Corporation7//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_POINTS20#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 50029#define TIMEOUT_DEFAULT_BOOT_MS 200030 31/**32 * sof_debug_check_flag - check if a given flag(s) is set in sof_core_debug33 * @mask: Flag or combination of flags to check34 *35 * Returns true if all bits set in mask is also set in sof_core_debug, otherwise36 * false37 */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 trace74 * @sdev: Pointer to the device's sdev75 * @level: prink log level to use for the printing76 * @panic_code: the panic code77 * @tracep_code: tracepoint code78 * @oops: Pointer to DSP specific oops data79 * @panic_info: Pointer to the received panic information message80 * @stack: Pointer to the call stack data81 * @stack_words: Number of words in the stack data82 *83 * helper to be called from .dbg_dump callbacks. No error code is84 * provided, it's left as an exercise for the caller of .dbg_dump85 * (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 before324 * selecting ops since platform code might need this information325 */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 Diagram380 *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() since443 * we cannot rely on debugfs444 * 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 modified472 * 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 PM525 * callbacks set. Increment the usage count so as to526 * 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 else629 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 else633 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 dependencies640 */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 debugfs675 * to allow client drivers to be removed cleanly676 */677 sof_unregister_clients(sdev);678 679 /*680 * Unregister machine driver. This will unbind the snd_card which681 * will remove the component driver and unload the topology682 * 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 an688 * exception and we forcably prevented D3 power state to preserve689 * context690 */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_LICENSE("Dual BSD/GPL");773MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core");774MODULE_ALIAS("platform:sof-audio");775MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT);776