1 #ifndef _LINUX_FIRMWARE_H 2 #define _LINUX_FIRMWARE_H 3 4 #include <linux/types.h> 5 #include <linux/compiler.h> 6 #include <linux/gfp.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 struct page **pages; 15 }; 16 17 struct module; 18 struct device; 19 20 struct builtin_fw { 21 char *name; 22 void *data; 23 unsigned long size; 24 }; 25 26 /* We have to play tricks here much like stringify() to get the 27 __COUNTER__ macro to be expanded as we want it */ 28 #define __fw_concat1(x, y) x##y 29 #define __fw_concat(x, y) __fw_concat1(x, y) 30 31 #define DECLARE_BUILTIN_FIRMWARE(name, blob) \ 32 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) 33 34 #define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ 35 static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ 36 __used __section(.builtin_fw) = { name, blob, size } 37 38 #if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) 39 int request_firmware(const struct firmware **fw, const char *name, 40 struct device *device); 41 int request_firmware_nowait( 42 struct module *module, bool uevent, 43 const char *name, struct device *device, gfp_t gfp, void *context, 44 void (*cont)(const struct firmware *fw, void *context)); 45 46 void release_firmware(const struct firmware *fw); 47 #else 48 static inline int request_firmware(const struct firmware **fw, 49 const char *name, 50 struct device *device) 51 { 52 return -EINVAL; 53 } 54 static inline int request_firmware_nowait( 55 struct module *module, bool uevent, 56 const char *name, struct device *device, gfp_t gfp, void *context, 57 void (*cont)(const struct firmware *fw, void *context)) 58 { 59 return -EINVAL; 60 } 61 62 static inline void release_firmware(const struct firmware *fw) 63 { 64 } 65 #endif 66 67 #endif 68