2018-03-10 22:14:49 +08:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef __FIRMWARE_FALLBACK_H
|
|
|
|
#define __FIRMWARE_FALLBACK_H
|
|
|
|
|
|
|
|
#include <linux/firmware.h>
|
|
|
|
#include <linux/device.h>
|
|
|
|
|
|
|
|
/**
|
|
|
|
* struct firmware_fallback_config - firmware fallback configuratioon 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.
|
2018-03-10 22:14:51 +08:00
|
|
|
* Useful to help debug a CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
|
|
|
|
* functionality on a kernel where that config entry has been disabled.
|
2018-03-10 22:14:49 +08:00
|
|
|
* @old_timeout: for internal use
|
|
|
|
* @loading_timeout: the timeout to wait for the fallback mechanism before
|
|
|
|
* giving up, in seconds.
|
|
|
|
*/
|
|
|
|
struct firmware_fallback_config {
|
2018-03-10 22:14:51 +08:00
|
|
|
unsigned int force_sysfs_fallback;
|
2018-03-10 22:14:49 +08:00
|
|
|
int old_timeout;
|
|
|
|
int loading_timeout;
|
|
|
|
};
|
|
|
|
|
|
|
|
#ifdef CONFIG_FW_LOADER_USER_HELPER
|
|
|
|
int fw_sysfs_fallback(struct firmware *fw, const char *name,
|
|
|
|
struct device *device,
|
|
|
|
unsigned int 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 fw_sysfs_fallback(struct firmware *fw, const char *name,
|
|
|
|
struct device *device,
|
|
|
|
unsigned int 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 */
|