diff options
Diffstat (limited to 'drivers/base/firmware_loader/firmware.h')
| -rw-r--r-- | drivers/base/firmware_loader/firmware.h | 37 |
1 files changed, 29 insertions, 8 deletions
diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h index 64acbb1a392c..4c1395f8e7ed 100644 --- a/drivers/base/firmware_loader/firmware.h +++ b/drivers/base/firmware_loader/firmware.h @@ -2,6 +2,7 @@ #ifndef __FIRMWARE_LOADER_H #define __FIRMWARE_LOADER_H +#include <linux/bitops.h> #include <linux/firmware.h> #include <linux/types.h> #include <linux/kref.h> @@ -10,13 +11,33 @@ #include <generated/utsrelease.h> -/* firmware behavior options */ -#define FW_OPT_UEVENT (1U << 0) -#define FW_OPT_NOWAIT (1U << 1) -#define FW_OPT_USERHELPER (1U << 2) -#define FW_OPT_NO_WARN (1U << 3) -#define FW_OPT_NOCACHE (1U << 4) -#define FW_OPT_NOFALLBACK (1U << 5) +/** + * enum fw_opt - options to control firmware loading behaviour + * + * @FW_OPT_UEVENT: Enables the fallback mechanism to send a kobject uevent + * when the firmware is not found. Userspace is in charge to load the + * firmware using the sysfs loading facility. + * @FW_OPT_NOWAIT: Used to describe the firmware request is asynchronous. + * @FW_OPT_USERHELPER: Enable the fallback mechanism, in case the direct + * filesystem lookup fails at finding the firmware. For details refer to + * firmware_fallback_sysfs(). + * @FW_OPT_NO_WARN: Quiet, avoid printing warning messages. + * @FW_OPT_NOCACHE: Disables firmware caching. Firmware caching is used to + * cache the firmware upon suspend, so that upon resume races against the + * firmware file lookup on storage is avoided. Used for calls where the + * file may be too big, or where the driver takes charge of its own + * firmware caching mechanism. + * @FW_OPT_NOFALLBACK: Disable the fallback mechanism. Takes precedence over + * &FW_OPT_UEVENT and &FW_OPT_USERHELPER. + */ +enum fw_opt { + FW_OPT_UEVENT = BIT(0), + FW_OPT_NOWAIT = BIT(1), + FW_OPT_USERHELPER = BIT(2), + FW_OPT_NO_WARN = BIT(3), + FW_OPT_NOCACHE = BIT(4), + FW_OPT_NOFALLBACK = BIT(5), +}; enum fw_status { FW_STATUS_UNKNOWN, @@ -110,6 +131,6 @@ static inline void fw_state_done(struct fw_priv *fw_priv) } int assign_fw(struct firmware *fw, struct device *device, - unsigned int opt_flags); + enum fw_opt opt_flags); #endif /* __FIRMWARE_LOADER_H */ |