/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __FIRMWARE_FALLBACK_H #define __FIRMWARE_FALLBACK_H #include <linux/firmware.h> #include <linux/device.h> #include "firmware.h" /** * struct firmware_fallback_config - firmware fallback configuration settings * * Helps describe and fine tune the fallback mechanism. * * @force_sysfs_fallback: force the sysfs fallback mechanism to be used * as if one had enabled CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y. * Useful to help debug a CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y * functionality on a kernel where that config entry has been disabled. * @ignore_sysfs_fallback: force to disable the sysfs fallback mechanism. * This emulates the behaviour as if we had set the kernel * config CONFIG_FW_LOADER_USER_HELPER=n. * @old_timeout: for internal use * @loading_timeout: the timeout to wait for the fallback mechanism before * giving up, in seconds. */ struct firmware_fallback_config { unsigned int force_sysfs_fallback; unsigned int ignore_sysfs_fallback; int old_timeout; int loading_timeout; }; #ifdef CONFIG_FW_LOADER_USER_HELPER int firmware_fallback_sysfs(struct firmware *fw, const char *name, struct device *device, enum fw_opt opt_flags, int ret); void kill_pending_fw_fallback_reqs(bool only_kill_custom); void fw_fallback_set_cache_timeout(void); void fw_fallback_set_default_timeout(void); int register_sysfs_loader(void); void unregister_sysfs_loader(void); #else /* CONFIG_FW_LOADER_USER_HELPER */ static inline int firmware_fallback_sysfs(struct firmware *fw, const char *name, struct device *device, enum fw_opt opt_flags, int ret) { /* Keep carrying over the same error */ return ret; } static inline void kill_pending_fw_fallback_reqs(bool only_kill_custom) { } static inline void fw_fallback_set_cache_timeout(void) { } static inline void fw_fallback_set_default_timeout(void) { } static inline int register_sysfs_loader(void) { return 0; } static inline void unregister_sysfs_loader(void) { } #endif /* CONFIG_FW_LOADER_USER_HELPER */ #endif /* __FIRMWARE_FALLBACK_H */