Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
12struct firmware {
13 size_t size;
14 const u8 *data;
15};
16
17struct device;
18
19struct 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))
38int request_firmware(const struct firmware **fw, const char *name,
39 struct device *device);
40int 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
45void release_firmware(const struct firmware *fw);
46#else
47static inline int request_firmware(const struct firmware **fw,
48 const char *name,
49 struct device *device)
50{
51 return -EINVAL;
52}
53static 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
61static inline void release_firmware(const struct firmware *fw)
62{
63}
64#endif
65
66#endif