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
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
30
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);
50int request_firmware_into_buf(const struct firmware **firmware_p,
51 const char *name, struct device *device, void *buf, size_t size);
52
53void release_firmware(const struct firmware *fw);
54#else
55static inline int request_firmware(const struct firmware **fw,
56 const char *name,
57 struct device *device)
58{
59 return -EINVAL;
60}
61static 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
69static inline void release_firmware(const struct firmware *fw)
70{
71}
72
73static inline int request_firmware_direct(const struct firmware **fw,
74 const char *name,
75 struct device *device)
76{
77 return -EINVAL;
78}
79
80static 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