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
request_firmware(const struct firmware ** fw,const char * name,struct device * device)55 static inline int request_firmware(const struct firmware **fw,
56 const char *name,
57 struct device *device)
58 {
59 return -EINVAL;
60 }
request_firmware_nowait(struct module * module,bool uevent,const char * name,struct device * device,gfp_t gfp,void * context,void (* cont)(const struct firmware * fw,void * context))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
release_firmware(const struct firmware * fw)69 static inline void release_firmware(const struct firmware *fw)
70 {
71 }
72
request_firmware_direct(const struct firmware ** fw,const char * name,struct device * device)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
request_firmware_into_buf(const struct firmware ** firmware_p,const char * name,struct device * device,void * buf,size_t size)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