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
8 #define FIRMWARE_NAME_MAX 30
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, void *context,
43 void (*cont)(const struct firmware *fw, void *context));
44
45 void release_firmware(const struct firmware *fw);
46 #else
request_firmware(const struct firmware ** fw,const char * name,struct device * device)47 static inline int request_firmware(const struct firmware **fw,
48 const char *name,
49 struct device *device)
50 {
51 return -EINVAL;
52 }
request_firmware_nowait(struct module * module,int uevent,const char * name,struct device * device,void * context,void (* cont)(const struct firmware * fw,void * context))53 static inline int request_firmware_nowait(
54 struct module *module, int uevent,
55 const char *name, struct device *device, void *context,
56 void (*cont)(const struct firmware *fw, void *context))
57 {
58 return -EINVAL;
59 }
60
release_firmware(const struct firmware * fw)61 static inline void release_firmware(const struct firmware *fw)
62 {
63 }
64 #endif
65
66 #endif
67