1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_FIRMWARE_H
3 #define _LINUX_FIRMWARE_H
5 #include <linux/types.h>
6 #include <linux/compiler.h>
9 #define FW_ACTION_NOHOTPLUG 0
10 #define FW_ACTION_HOTPLUG 1
16 /* firmware loader private fields */
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)
34 #define DECLARE_BUILTIN_FIRMWARE(name, blob) \
35 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob))
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 }
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 firmware_request_nowarn(const struct firmware **fw, const char *name,
45 struct device *device);
46 int firmware_request_platform(const struct firmware **fw, const char *name,
47 struct device *device);
48 int request_firmware_nowait(
49 struct module *module, bool uevent,
50 const char *name, struct device *device, gfp_t gfp, void *context,
51 void (*cont)(const struct firmware *fw, void *context));
52 int request_firmware_direct(const struct firmware **fw, const char *name,
53 struct device *device);
54 int request_firmware_into_buf(const struct firmware **firmware_p,
55 const char *name, struct device *device, void *buf, size_t size);
57 void release_firmware(const struct firmware *fw);
59 static inline int request_firmware(const struct firmware **fw,
61 struct device *device)
66 static inline int firmware_request_nowarn(const struct firmware **fw,
68 struct device *device)
73 static inline int firmware_request_platform(const struct firmware **fw,
75 struct device *device)
80 static inline int request_firmware_nowait(
81 struct module *module, bool uevent,
82 const char *name, struct device *device, gfp_t gfp, void *context,
83 void (*cont)(const struct firmware *fw, void *context))
88 static inline void release_firmware(const struct firmware *fw)
92 static inline int request_firmware_direct(const struct firmware **fw,
94 struct device *device)
99 static inline int request_firmware_into_buf(const struct firmware **firmware_p,
100 const char *name, struct device *device, void *buf, size_t size)
107 int firmware_request_cache(struct device *device, const char *name);