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 #include <linux/gfp.h> 8 9 #define FW_ACTION_NOHOTPLUG 0 10 #define FW_ACTION_HOTPLUG 1 11 12 struct firmware { 13 size_t size; 14 const u8 *data; 15 }; 16 17 struct device; 18 19 struct builtin_fw { 20 char *name; 21 void *data; 22 unsigned long size; 23 }; 24 25 /* We have to play tricks here much like stringify() to get the 26 __COUNTER__ macro to be expanded as we want it */ 27 #define __fw_concat1(x, y) x##y 28 #define __fw_concat(x, y) __fw_concat1(x, y) 29 30 #define DECLARE_BUILTIN_FIRMWARE(name, blob) \ 31 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) 32 33 #define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ 34 static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ 35 __used __section(.builtin_fw) = { name, blob, size } 36 37 #if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) 38 int request_firmware(const struct firmware **fw, const char *name, 39 struct device *device); 40 int request_firmware_nowait( 41 struct module *module, int uevent, 42 const char *name, struct device *device, gfp_t gfp, void *context, 43 void (*cont)(const struct firmware *fw, void *context)); 44 45 void release_firmware(const struct firmware *fw); 46 #else 47 static inline int request_firmware(const struct firmware **fw, 48 const char *name, 49 struct device *device) 50 { 51 return -EINVAL; 52 } 53 static inline int request_firmware_nowait( 54 struct module *module, int uevent, 55 const char *name, struct device *device, gfp_t gfp, void *context, 56 void (*cont)(const struct firmware *fw, void *context)) 57 { 58 return -EINVAL; 59 } 60 61 static inline void release_firmware(const struct firmware *fw) 62 { 63 } 64 #endif 65 66 #endif 67