1 #ifndef _LINUX_FIRMWARE_H 2 #define _LINUX_FIRMWARE_H 3 4 #include <linux/module.h> 5 #include <linux/types.h> 6 #include <linux/compiler.h> 7 8 #define FW_ACTION_NOHOTPLUG 0 9 #define FW_ACTION_HOTPLUG 1 10 11 struct firmware { 12 size_t size; 13 const u8 *data; 14 }; 15 16 struct device; 17 18 struct builtin_fw { 19 char *name; 20 void *data; 21 unsigned long size; 22 }; 23 24 /* We have to play tricks here much like stringify() to get the 25 __COUNTER__ macro to be expanded as we want it */ 26 #define __fw_concat1(x, y) x##y 27 #define __fw_concat(x, y) __fw_concat1(x, y) 28 29 #define DECLARE_BUILTIN_FIRMWARE(name, blob) \ 30 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) 31 32 #define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ 33 static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ 34 __used __section(.builtin_fw) = { name, blob, size } 35 36 #if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) 37 int request_firmware(const struct firmware **fw, const char *name, 38 struct device *device); 39 int request_firmware_nowait( 40 struct module *module, int uevent, 41 const char *name, struct device *device, void *context, 42 void (*cont)(const struct firmware *fw, void *context)); 43 44 void release_firmware(const struct firmware *fw); 45 #else 46 static inline int request_firmware(const struct firmware **fw, 47 const char *name, 48 struct device *device) 49 { 50 return -EINVAL; 51 } 52 static inline int request_firmware_nowait( 53 struct module *module, int uevent, 54 const char *name, struct device *device, void *context, 55 void (*cont)(const struct firmware *fw, void *context)) 56 { 57 return -EINVAL; 58 } 59 60 static inline void release_firmware(const struct firmware *fw) 61 { 62 } 63 #endif 64 65 #endif 66