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 /* firmware loader private fields */ 17 void *priv; 18 }; 19 20 struct module; 21 struct device; 22 23 struct builtin_fw { 24 char *name; 25 void *data; 26 unsigned long size; 27 }; 28 29 /* We have to play tricks here much like stringify() to get the 30 __COUNTER__ macro to be expanded as we want it */ 31 #define __fw_concat1(x, y) x##y 32 #define __fw_concat(x, y) __fw_concat1(x, y) 33 34 #define DECLARE_BUILTIN_FIRMWARE(name, blob) \ 35 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) 36 37 #define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ 38 static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ 39 __used __section(.builtin_fw) = { name, blob, size } 40 41 #if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) 42 int request_firmware(const struct firmware **fw, const char *name, 43 struct device *device); 44 int request_firmware_nowait( 45 struct module *module, bool uevent, 46 const char *name, struct device *device, gfp_t gfp, void *context, 47 void (*cont)(const struct firmware *fw, void *context)); 48 49 void release_firmware(const struct firmware *fw); 50 int cache_firmware(const char *name); 51 int uncache_firmware(const char *name); 52 #else 53 static inline int request_firmware(const struct firmware **fw, 54 const char *name, 55 struct device *device) 56 { 57 return -EINVAL; 58 } 59 static inline int request_firmware_nowait( 60 struct module *module, bool uevent, 61 const char *name, struct device *device, gfp_t gfp, void *context, 62 void (*cont)(const struct firmware *fw, void *context)) 63 { 64 return -EINVAL; 65 } 66 67 static inline void release_firmware(const struct firmware *fw) 68 { 69 } 70 71 static inline int cache_firmware(const char *name) 72 { 73 return -ENOENT; 74 } 75 76 static inline int uncache_firmware(const char *name) 77 { 78 return -EINVAL; 79 } 80 #endif 81 82 #endif 83