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 FW_ACTION_NOHOTPLUG 0
9 #define FW_ACTION_HOTPLUG 1
10
11 struct firmware {
12 size_t size;
13 const u8 *data;
14 };
15
16 struct device;
17
18 struct builtin_fw {
19 char *name;
20 void *data;
21 unsigned long size;
22 };
23
24 /* We have to play tricks here much like stringify() to get the
25 __COUNTER__ macro to be expanded as we want it */
26 #define __fw_concat1(x, y) x##y
27 #define __fw_concat(x, y) __fw_concat1(x, y)
28
29 #define DECLARE_BUILTIN_FIRMWARE(name, blob) \
30 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob))
31
32 #define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \
33 static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \
34 __used __section(.builtin_fw) = { name, blob, size }
35
36 #if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE))
37 int request_firmware(const struct firmware **fw, const char *name,
38 struct device *device);
39 int request_firmware_nowait(
40 struct module *module, int uevent,
41 const char *name, struct device *device, void *context,
42 void (*cont)(const struct firmware *fw, void *context));
43
44 void release_firmware(const struct firmware *fw);
45 #else
46 static inline int request_firmware(const struct firmware **fw,
47 const char *name,
48 struct device *device)
49 {
50 return -EINVAL;
51 }
52 static inline int request_firmware_nowait(
53 struct module *module, int uevent,
54 const char *name, struct device *device, void *context,
55 void (*cont)(const struct firmware *fw, void *context))
56 {
57 return -EINVAL;
58 }
59
60 static inline void release_firmware(const struct firmware *fw)
61 {
62 }
63 #endif
64
65 #endif
66
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