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 11struct firmware { 12 size_t size; 13 const u8 *data; 14 struct page **pages; 15 16 /* firmware loader private fields */ 17 void *priv; 18}; 19 20struct module; 21struct device; 22 23struct 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)) 42int request_firmware(const struct firmware **fw, const char *name, 43 struct device *device); 44int 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)); 48int request_firmware_direct(const struct firmware **fw, const char *name, 49 struct device *device); 50 51void release_firmware(const struct firmware *fw); 52#else 53static inline int request_firmware(const struct firmware **fw, 54 const char *name, 55 struct device *device) 56{ 57 return -EINVAL; 58} 59static 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 67static inline void release_firmware(const struct firmware *fw) 68{ 69} 70 71static inline int request_firmware_direct(const struct firmware **fw, 72 const char *name, 73 struct device *device) 74{ 75 return -EINVAL; 76} 77 78#endif 79#endif 80