diff options
Diffstat (limited to 'sound/soc/sof/core.c')
-rw-r--r-- | sound/soc/sof/core.c | 593 |
1 files changed, 487 insertions, 106 deletions
diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c index adc7c37145d6..9b00ede2a486 100644 --- a/sound/soc/sof/core.c +++ b/sound/soc/sof/core.c @@ -13,13 +13,14 @@ #include <sound/soc.h> #include <sound/sof.h> #include "sof-priv.h" +#include "sof-of-dev.h" #include "ops.h" -#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) -#include "probe.h" -#endif + +#define CREATE_TRACE_POINTS +#include <trace/events/sof.h> /* see SOF_DBG_ flags */ -int sof_core_debug; +static int sof_core_debug = IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_FIRMWARE_TRACE); module_param_named(sof_debug, sof_core_debug, int, 0444); MODULE_PARM_DESC(sof_debug, "SOF core debug options (0x0 all off)"); @@ -27,6 +28,22 @@ MODULE_PARM_DESC(sof_debug, "SOF core debug options (0x0 all off)"); #define TIMEOUT_DEFAULT_IPC_MS 500 #define TIMEOUT_DEFAULT_BOOT_MS 2000 +/** + * sof_debug_check_flag - check if a given flag(s) is set in sof_core_debug + * @mask: Flag or combination of flags to check + * + * Returns true if all bits set in mask is also set in sof_core_debug, otherwise + * false + */ +bool sof_debug_check_flag(int mask) +{ + if ((sof_core_debug & mask) == mask) + return true; + + return false; +} +EXPORT_SYMBOL(sof_debug_check_flag); + /* * FW Panic/fault handling. */ @@ -52,23 +69,33 @@ static const struct sof_panic_msg panic_msg[] = { {SOF_IPC_PANIC_ASSERT, "assertion failed"}, }; -/* +/** + * sof_print_oops_and_stack - Handle the printing of DSP oops and stack trace + * @sdev: Pointer to the device's sdev + * @level: prink log level to use for the printing + * @panic_code: the panic code + * @tracep_code: tracepoint code + * @oops: Pointer to DSP specific oops data + * @panic_info: Pointer to the received panic information message + * @stack: Pointer to the call stack data + * @stack_words: Number of words in the stack data + * * helper to be called from .dbg_dump callbacks. No error code is * provided, it's left as an exercise for the caller of .dbg_dump * (typically IPC or loader) */ -void snd_sof_get_status(struct snd_sof_dev *sdev, u32 panic_code, - u32 tracep_code, void *oops, - struct sof_ipc_panic_info *panic_info, - void *stack, size_t stack_words) +void sof_print_oops_and_stack(struct snd_sof_dev *sdev, const char *level, + u32 panic_code, u32 tracep_code, void *oops, + struct sof_ipc_panic_info *panic_info, + void *stack, size_t stack_words) { u32 code; int i; /* is firmware dead ? */ if ((panic_code & SOF_IPC_PANIC_MAGIC_MASK) != SOF_IPC_PANIC_MAGIC) { - dev_err(sdev->dev, "error: unexpected fault 0x%8.8x trace 0x%8.8x\n", - panic_code, tracep_code); + dev_printk(level, sdev->dev, "unexpected fault %#010x trace %#010x\n", + panic_code, tracep_code); return; /* no fault ? */ } @@ -76,54 +103,303 @@ void snd_sof_get_status(struct snd_sof_dev *sdev, u32 panic_code, for (i = 0; i < ARRAY_SIZE(panic_msg); i++) { if (panic_msg[i].id == code) { - dev_err(sdev->dev, "error: %s\n", panic_msg[i].msg); - dev_err(sdev->dev, "error: trace point %8.8x\n", - tracep_code); + dev_printk(level, sdev->dev, "reason: %s (%#x)\n", + panic_msg[i].msg, code & SOF_IPC_PANIC_CODE_MASK); + dev_printk(level, sdev->dev, "trace point: %#010x\n", tracep_code); goto out; } } /* unknown error */ - dev_err(sdev->dev, "error: unknown reason %8.8x\n", panic_code); - dev_err(sdev->dev, "error: trace point %8.8x\n", tracep_code); + dev_printk(level, sdev->dev, "unknown panic code: %#x\n", + code & SOF_IPC_PANIC_CODE_MASK); + dev_printk(level, sdev->dev, "trace point: %#010x\n", tracep_code); out: - dev_err(sdev->dev, "error: panic at %s:%d\n", - panic_info->filename, panic_info->linenum); - sof_oops(sdev, oops); - sof_stack(sdev, oops, stack, stack_words); + dev_printk(level, sdev->dev, "panic at %s:%d\n", panic_info->filename, + panic_info->linenum); + sof_oops(sdev, level, oops); + sof_stack(sdev, level, oops, stack, stack_words); +} +EXPORT_SYMBOL(sof_print_oops_and_stack); + +/* Helper to manage DSP state */ +void sof_set_fw_state(struct snd_sof_dev *sdev, enum sof_fw_state new_state) +{ + if (sdev->fw_state == new_state) + return; + + dev_dbg(sdev->dev, "fw_state change: %d -> %d\n", sdev->fw_state, new_state); + sdev->fw_state = new_state; + + switch (new_state) { + case SOF_FW_BOOT_NOT_STARTED: + case SOF_FW_BOOT_COMPLETE: + case SOF_FW_CRASHED: + sof_client_fw_state_dispatcher(sdev); + fallthrough; + default: + break; + } +} +EXPORT_SYMBOL(sof_set_fw_state); + +static struct snd_sof_of_mach *sof_of_machine_select(struct snd_sof_dev *sdev) +{ + struct snd_sof_pdata *sof_pdata = sdev->pdata; + const struct sof_dev_desc *desc = sof_pdata->desc; + struct snd_sof_of_mach *mach = desc->of_machines; + + if (!mach) + return NULL; + + for (; mach->compatible; mach++) { + if (of_machine_is_compatible(mach->compatible)) { + sof_pdata->tplg_filename = mach->sof_tplg_filename; + if (mach->fw_filename) + sof_pdata->fw_filename = mach->fw_filename; + + return mach; + } + } + + return NULL; +} + +/* SOF Driver enumeration */ +static int sof_machine_check(struct snd_sof_dev *sdev) +{ + struct snd_sof_pdata *sof_pdata = sdev->pdata; + const struct sof_dev_desc *desc = sof_pdata->desc; + struct snd_soc_acpi_mach *mach; + + if (!IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)) { + const struct snd_sof_of_mach *of_mach; + + if (IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC_DEBUG_SUPPORT) && + sof_debug_check_flag(SOF_DBG_FORCE_NOCODEC)) + goto nocodec; + + /* find machine */ + mach = snd_sof_machine_select(sdev); + if (mach) { + sof_pdata->machine = mach; + + if (sof_pdata->subsystem_id_set) { + mach->mach_params.subsystem_vendor = sof_pdata->subsystem_vendor; + mach->mach_params.subsystem_device = sof_pdata->subsystem_device; + mach->mach_params.subsystem_id_set = true; + } + + snd_sof_set_mach_params(mach, sdev); + return 0; + } + + of_mach = sof_of_machine_select(sdev); + if (of_mach) { + sof_pdata->of_machine = of_mach; + return 0; + } + + if (!IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)) { + dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n"); + return -ENODEV; + } + } else { + dev_warn(sdev->dev, "Force to use nocodec mode\n"); + } + +nocodec: + /* select nocodec mode */ + dev_warn(sdev->dev, "Using nocodec machine driver\n"); + mach = devm_kzalloc(sdev->dev, sizeof(*mach), GFP_KERNEL); + if (!mach) + return -ENOMEM; + + mach->drv_name = "sof-nocodec"; + if (!sof_pdata->tplg_filename) + sof_pdata->tplg_filename = desc->nocodec_tplg_filename; + + sof_pdata->machine = mach; + snd_sof_set_mach_params(mach, sdev); + + return 0; +} + +static int sof_select_ipc_and_paths(struct snd_sof_dev *sdev) +{ + struct snd_sof_pdata *plat_data = sdev->pdata; + struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; + struct sof_loadable_file_profile out_profile; + struct device *dev = sdev->dev; + int ret; + + if (base_profile->ipc_type != plat_data->desc->ipc_default) + dev_info(dev, + "Module parameter used, overriding default IPC %d to %d\n", + plat_data->desc->ipc_default, base_profile->ipc_type); + + if (base_profile->fw_path) + dev_dbg(dev, "Module parameter used, changed fw path to %s\n", + base_profile->fw_path); + else if (base_profile->fw_path_postfix) + dev_dbg(dev, "Path postfix appended to default fw path: %s\n", + base_profile->fw_path_postfix); + + if (base_profile->fw_lib_path) + dev_dbg(dev, "Module parameter used, changed fw_lib path to %s\n", + base_profile->fw_lib_path); + else if (base_profile->fw_lib_path_postfix) + dev_dbg(dev, "Path postfix appended to default fw_lib path: %s\n", + base_profile->fw_lib_path_postfix); + + if (base_profile->fw_name) + dev_dbg(dev, "Module parameter used, changed fw filename to %s\n", + base_profile->fw_name); + + if (base_profile->tplg_path) + dev_dbg(dev, "Module parameter used, changed tplg path to %s\n", + base_profile->tplg_path); + + if (base_profile->tplg_name) + dev_dbg(dev, "Module parameter used, changed tplg name to %s\n", + base_profile->tplg_name); + + ret = sof_create_ipc_file_profile(sdev, base_profile, &out_profile); + if (ret) + return ret; + + plat_data->ipc_type = out_profile.ipc_type; + plat_data->fw_filename = out_profile.fw_name; + plat_data->fw_filename_prefix = out_profile.fw_path; + plat_data->fw_lib_prefix = out_profile.fw_lib_path; + plat_data->tplg_filename_prefix = out_profile.tplg_path; + + return 0; +} + +static int validate_sof_ops(struct snd_sof_dev *sdev) +{ + int ret; + + /* init ops, if necessary */ + ret = sof_ops_init(sdev); + if (ret < 0) + return ret; + + /* check all mandatory ops */ + if (!sof_ops(sdev) || !sof_ops(sdev)->probe) { + dev_err(sdev->dev, "missing mandatory ops\n"); + sof_ops_free(sdev); + return -EINVAL; + } + + if (!sdev->dspless_mode_selected && + (!sof_ops(sdev)->run || !sof_ops(sdev)->block_read || + !sof_ops(sdev)->block_write || !sof_ops(sdev)->send_msg || + !sof_ops(sdev)->load_firmware || !sof_ops(sdev)->ipc_msg_data)) { + dev_err(sdev->dev, "missing mandatory DSP ops\n"); + sof_ops_free(sdev); + return -EINVAL; + } + + return 0; +} + +static int sof_init_sof_ops(struct snd_sof_dev *sdev) +{ + struct snd_sof_pdata *plat_data = sdev->pdata; + struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; + + /* check IPC support */ + if (!(BIT(base_profile->ipc_type) & plat_data->desc->ipc_supported_mask)) { + dev_err(sdev->dev, + "ipc_type %d is not supported on this platform, mask is %#x\n", + base_profile->ipc_type, plat_data->desc->ipc_supported_mask); + return -EINVAL; + } + + /* + * Save the selected IPC type and a topology name override before + * selecting ops since platform code might need this information + */ + plat_data->ipc_type = base_profile->ipc_type; + plat_data->tplg_filename = base_profile->tplg_name; + + return validate_sof_ops(sdev); +} + +static int sof_init_environment(struct snd_sof_dev *sdev) +{ + struct snd_sof_pdata *plat_data = sdev->pdata; + struct sof_loadable_file_profile *base_profile = &plat_data->ipc_file_profile_base; + int ret; + + /* probe the DSP hardware */ + ret = snd_sof_probe(sdev); + if (ret < 0) { + dev_err(sdev->dev, "failed to probe DSP %d\n", ret); + sof_ops_free(sdev); + return ret; + } + + /* check machine info */ + ret = sof_machine_check(sdev); + if (ret < 0) { + dev_err(sdev->dev, "failed to get machine info %d\n", ret); + goto err_machine_check; + } + + ret = sof_select_ipc_and_paths(sdev); + if (!ret && plat_data->ipc_type != base_profile->ipc_type) { + /* IPC type changed, re-initialize the ops */ + sof_ops_free(sdev); + + ret = validate_sof_ops(sdev); + if (ret < 0) { + snd_sof_remove(sdev); + return ret; + } + } + +err_machine_check: + if (ret) { + snd_sof_remove(sdev); + sof_ops_free(sdev); + } + + return ret; } -EXPORT_SYMBOL(snd_sof_get_status); /* * FW Boot State Transition Diagram * - * +-----------------------------------------------------------------------+ - * | | - * ------------------ ------------------ | - * | | | | | - * | BOOT_FAILED | | READY_FAILED |-------------------------+ | - * | | | | | | - * ------------------ ------------------ | | - * ^ ^ | | - * | | | | - * (FW Boot Timeout) (FW_READY FAIL) | | - * | | | | - * | | | | - * ------------------ | ------------------ | | - * | | | | | | | - * | IN_PROGRESS |---------------+------------->| COMPLETE | | | - * | | (FW Boot OK) (FW_READY OK) | | | | - * ------------------ ------------------ | | - * ^ | | | - * | | | | - * (FW Loading OK) (System Suspend/Runtime Suspend) - * | | | | - * | | | | - * ------------------ ------------------ | | | - * | | | |<-----+ | | - * | PREPARE | | NOT_STARTED |<---------------------+ | - * | | | |<---------------------------+ + * +----------------------------------------------------------------------+ + * | | + * ------------------ ------------------ | + * | | | | | + * | BOOT_FAILED |<-------| READY_FAILED | | + * | |<--+ | | ------------------ | + * ------------------ | ------------------ | | | + * ^ | ^ | CRASHED |---+ | + * | | | | | | | + * (FW Boot Timeout) | (FW_READY FAIL) ------------------ | | + * | | | ^ | | + * | | | |(DSP Panic) | | + * ------------------ | | ------------------ | | + * | | | | | | | | + * | IN_PROGRESS |---------------+------------->| COMPLETE | | | + * | | (FW Boot OK) (FW_READY OK) | | | | + * ------------------ | ------------------ | | + * ^ | | | | + * | | | | | + * (FW Loading OK) | (System Suspend/Runtime Suspend) + * | | | | | + * | (FW Loading Fail) | | | + * ------------------ | ------------------ | | | + * | | | | |<-----+ | | + * | PREPARE |---+ | NOT_STARTED |<---------------------+ | + * | | | |<--------------------------+ * ------------------ ------------------ * | ^ | ^ * | | | | @@ -140,26 +416,21 @@ static int sof_probe_continue(struct snd_sof_dev *sdev) struct snd_sof_pdata *plat_data = sdev->pdata; int ret; - /* probe the DSP hardware */ - ret = snd_sof_probe(sdev); - if (ret < 0) { - dev_err(sdev->dev, "error: failed to probe DSP %d\n", ret); + /* Initialize loadable file paths and check the environment validity */ + ret = sof_init_environment(sdev); + if (ret) return ret; - } - sdev->fw_state = SOF_FW_BOOT_PREPARE; - - /* check machine info */ - ret = sof_machine_check(sdev); - if (ret < 0) { - dev_err(sdev->dev, "error: failed to get machine info %d\n", - ret); - goto dbg_err; - } + sof_set_fw_state(sdev, SOF_FW_BOOT_PREPARE); /* set up platform component driver */ snd_sof_new_platform_drv(sdev); + if (sdev->dspless_mode_selected) { + sof_set_fw_state(sdev, SOF_DSPLESS_MODE); + goto skip_dsp_init; + } + /* register any debug/trace capabilities */ ret = snd_sof_dbg_init(sdev); if (ret < 0) { @@ -186,10 +457,11 @@ static int sof_probe_continue(struct snd_sof_dev *sdev) if (ret < 0) { dev_err(sdev->dev, "error: failed to load DSP firmware %d\n", ret); + sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED); goto fw_load_err; } - sdev->fw_state = SOF_FW_BOOT_IN_PROGRESS; + sof_set_fw_state(sdev, SOF_FW_BOOT_IN_PROGRESS); /* * Boot the firmware. The FW boot status will be modified @@ -199,25 +471,25 @@ static int sof_probe_continue(struct snd_sof_dev *sdev) if (ret < 0) { dev_err(sdev->dev, "error: failed to boot DSP firmware %d\n", ret); + sof_set_fw_state(sdev, SOF_FW_BOOT_FAILED); goto fw_run_err; } - if (IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_FIRMWARE_TRACE) || - (sof_core_debug & SOF_DBG_ENABLE_TRACE)) { - sdev->dtrace_is_supported = true; + if (sof_debug_check_flag(SOF_DBG_ENABLE_TRACE)) { + sdev->fw_trace_is_supported = true; - /* init DMA trace */ - ret = snd_sof_init_trace(sdev); + /* init firmware tracing */ + ret = sof_fw_trace_init(sdev); if (ret < 0) { /* non fatal */ - dev_warn(sdev->dev, - "warning: failed to initialize trace %d\n", + dev_warn(sdev->dev, "failed to initialize firmware tracing %d\n", ret); } } else { dev_dbg(sdev->dev, "SOF firmware trace disabled\n"); } +skip_dsp_init: /* hereafter all FW boot flows are for PM reasons */ sdev->first_boot = false; @@ -232,8 +504,17 @@ static int sof_probe_continue(struct snd_sof_dev *sdev) } ret = snd_sof_machine_register(sdev, plat_data); - if (ret < 0) + if (ret < 0) { + dev_err(sdev->dev, + "error: failed to register machine driver %d\n", ret); goto fw_trace_err; + } + + ret = sof_register_clients(sdev); + if (ret < 0) { + dev_err(sdev->dev, "failed to register clients %d\n", ret); + goto sof_machine_err; + } /* * Some platforms in SOF, ex: BYT, may not have their platform PM @@ -246,21 +527,27 @@ static int sof_probe_continue(struct snd_sof_dev *sdev) if (plat_data->sof_probe_complete) plat_data->sof_probe_complete(sdev->dev); + sdev->probe_completed = true; + return 0; +sof_machine_err: + snd_sof_machine_unregister(sdev, plat_data); fw_trace_err: - snd_sof_free_trace(sdev); + sof_fw_trace_free(sdev); fw_run_err: snd_sof_fw_unload(sdev); fw_load_err: snd_sof_ipc_free(sdev); ipc_err: - snd_sof_free_debug(sdev); dbg_err: + snd_sof_free_debug(sdev); snd_sof_remove(sdev); + snd_sof_remove_late(sdev); + sof_ops_free(sdev); /* all resources freed, update state to match */ - sdev->fw_state = SOF_FW_BOOT_NOT_STARTED; + sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED); sdev->first_boot = true; return ret; @@ -282,6 +569,7 @@ static void sof_probe_work(struct work_struct *work) int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data) { struct snd_sof_dev *sdev; + int ret; sdev = devm_kzalloc(dev, sizeof(*sdev), GFP_KERNEL); if (!sdev) @@ -295,30 +583,40 @@ int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data) sdev->pdata = plat_data; sdev->first_boot = true; - sdev->fw_state = SOF_FW_BOOT_NOT_STARTED; -#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) - sdev->extractor_stream_tag = SOF_PROBE_INVALID_NODE_ID; -#endif dev_set_drvdata(dev, sdev); - /* check all mandatory ops */ - if (!sof_ops(sdev) || !sof_ops(sdev)->probe || !sof_ops(sdev)->run || - !sof_ops(sdev)->block_read || !sof_ops(sdev)->block_write || - !sof_ops(sdev)->send_msg || !sof_ops(sdev)->load_firmware || - !sof_ops(sdev)->ipc_msg_data || !sof_ops(sdev)->ipc_pcm_params || - !sof_ops(sdev)->fw_ready) - return -EINVAL; + if (sof_core_debug) + dev_info(dev, "sof_debug value: %#x\n", sof_core_debug); + + if (sof_debug_check_flag(SOF_DBG_DSPLESS_MODE)) { + if (plat_data->desc->dspless_mode_supported) { + dev_info(dev, "Switching to DSPless mode\n"); + sdev->dspless_mode_selected = true; + } else { + dev_info(dev, "DSPless mode is not supported by the platform\n"); + } + } + + /* Initialize sof_ops based on the initial selected IPC version */ + ret = sof_init_sof_ops(sdev); + if (ret) + return ret; INIT_LIST_HEAD(&sdev->pcm_list); INIT_LIST_HEAD(&sdev->kcontrol_list); INIT_LIST_HEAD(&sdev->widget_list); + INIT_LIST_HEAD(&sdev->pipeline_list); INIT_LIST_HEAD(&sdev->dai_list); + INIT_LIST_HEAD(&sdev->dai_link_list); INIT_LIST_HEAD(&sdev->route_list); + INIT_LIST_HEAD(&sdev->ipc_client_list); + INIT_LIST_HEAD(&sdev->ipc_rx_handler_list); + INIT_LIST_HEAD(&sdev->fw_state_handler_list); spin_lock_init(&sdev->ipc_lock); spin_lock_init(&sdev->hw_lock); - - if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) - INIT_WORK(&sdev->probe_work, sof_probe_work); + mutex_init(&sdev->power_state_access); + mutex_init(&sdev->ipc_client_mutex); + mutex_init(&sdev->client_event_handler_mutex); /* set default timeouts if none provided */ if (plat_data->desc->ipc_timeout == 0) @@ -330,7 +628,18 @@ int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data) else sdev->boot_timeout = plat_data->desc->boot_timeout; + sof_set_fw_state(sdev, SOF_FW_BOOT_NOT_STARTED); + + /* + * first pass of probe which isn't allowed to run in a work-queue, + * typically to rely on -EPROBE_DEFER dependencies + */ + ret = snd_sof_probe_early(sdev); + if (ret < 0) + return ret; + if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) { + INIT_WORK(&sdev->probe_work, sof_probe_work); schedule_work(&sdev->probe_work); return 0; } @@ -339,26 +648,29 @@ int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data) } EXPORT_SYMBOL(snd_sof_device_probe); +bool snd_sof_device_probe_completed(struct device *dev) +{ + struct snd_sof_dev *sdev = dev_get_drvdata(dev); + + return sdev->probe_completed; +} +EXPORT_SYMBOL(snd_sof_device_probe_completed); + int snd_sof_device_remove(struct device *dev) { struct snd_sof_dev *sdev = dev_get_drvdata(dev); struct snd_sof_pdata *pdata = sdev->pdata; int ret; + bool aborted = false; if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) - cancel_work_sync(&sdev->probe_work); - - if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) { - ret = snd_sof_dsp_power_down_notify(sdev); - if (ret < 0) - dev_warn(dev, "error: %d failed to prepare DSP for device removal", - ret); + aborted = cancel_work_sync(&sdev->probe_work); - snd_sof_fw_unload(sdev); - snd_sof_ipc_free(sdev); - snd_sof_free_debug(sdev); - snd_sof_free_trace(sdev); - } + /* + * Unregister any registered client device first before IPC and debugfs + * to allow client drivers to be removed cleanly + */ + sof_unregister_clients(sdev); /* * Unregister machine driver. This will unbind the snd_card which @@ -368,23 +680,92 @@ int snd_sof_device_remove(struct device *dev) snd_sof_machine_unregister(sdev, pdata); /* - * Unregistering the machine driver results in unloading the topology. - * Some widgets, ex: scheduler, attempt to power down the core they are - * scheduled on, when they are unloaded. Therefore, the DSP must be - * removed only after the topology has been unloaded. + * Balance the runtime pm usage count in case we are faced with an + * exception and we forcably prevented D3 power state to preserve + * context */ - if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) + if (sdev->d3_prevented) { + sdev->d3_prevented = false; + pm_runtime_put_noidle(sdev->dev); + } + + if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) { + sof_fw_trace_free(sdev); + ret = snd_sof_dsp_power_down_notify(sdev); + if (ret < 0) + dev_warn(dev, "error: %d failed to prepare DSP for device removal", + ret); + + snd_sof_ipc_free(sdev); + snd_sof_free_debug(sdev); snd_sof_remove(sdev); + snd_sof_remove_late(sdev); + sof_ops_free(sdev); + } else if (aborted) { + /* probe_work never ran */ + snd_sof_remove_late(sdev); + sof_ops_free(sdev); + } /* release firmware */ - release_firmware(pdata->fw); - pdata->fw = NULL; + snd_sof_fw_unload(sdev); return 0; } EXPORT_SYMBOL(snd_sof_device_remove); +int snd_sof_device_shutdown(struct device *dev) +{ + struct snd_sof_dev *sdev = dev_get_drvdata(dev); + + if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) + cancel_work_sync(&sdev->probe_work); + + if (sdev->fw_state == SOF_FW_BOOT_COMPLETE) { + sof_fw_trace_free(sdev); + return snd_sof_shutdown(sdev); + } + + return 0; +} +EXPORT_SYMBOL(snd_sof_device_shutdown); + +/* Machine driver registering and unregistering */ +int sof_machine_register(struct snd_sof_dev *sdev, void *pdata) +{ + struct snd_sof_pdata *plat_data = pdata; + const char *drv_name; + const void *mach; + int size; + + drv_name = plat_data->machine->drv_name; + mach = plat_data->machine; + size = sizeof(*plat_data->machine); + + /* register machine driver, pass machine info as pdata */ + plat_data->pdev_mach = + platform_device_register_data(sdev->dev, drv_name, + PLATFORM_DEVID_NONE, mach, size); + if (IS_ERR(plat_data->pdev_mach)) + return PTR_ERR(plat_data->pdev_mach); + + dev_dbg(sdev->dev, "created machine %s\n", + dev_name(&plat_data->pdev_mach->dev)); + + return 0; +} +EXPORT_SYMBOL(sof_machine_register); + +void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata) +{ + struct snd_sof_pdata *plat_data = pdata; + + platform_device_unregister(plat_data->pdev_mach); +} +EXPORT_SYMBOL(sof_machine_unregister); + MODULE_AUTHOR("Liam Girdwood"); MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_ALIAS("platform:sof-audio"); +MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT); |