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 int request_firmware_direct(const struct firmware **fw, const char *name, 49 struct device *device); 50 int request_firmware_into_buf(const struct firmware **firmware_p, 51 const char *name, struct device *device, void *buf, size_t size); 52 53 void release_firmware(const struct firmware *fw); 54 #else 55 static inline int request_firmware(const struct firmware **fw, 56 const char *name, 57 struct device *device) 58 { 59 return -EINVAL; 60 } 61 static inline int request_firmware_nowait( 62 struct module *module, bool uevent, 63 const char *name, struct device *device, gfp_t gfp, void *context, 64 void (*cont)(const struct firmware *fw, void *context)) 65 { 66 return -EINVAL; 67 } 68 69 static inline void release_firmware(const struct firmware *fw) 70 { 71 } 72 73 static inline int request_firmware_direct(const struct firmware **fw, 74 const char *name, 75 struct device *device) 76 { 77 return -EINVAL; 78 } 79 80 static inline int request_firmware_into_buf(const struct firmware **firmware_p, 81 const char *name, struct device *device, void *buf, size_t size) 82 { 83 return -EINVAL; 84 } 85 86 #endif 87 #endif 88