diff options
Diffstat (limited to 'kernel/include/linux/firmware.h')
-rw-r--r-- | kernel/include/linux/firmware.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/kernel/include/linux/firmware.h b/kernel/include/linux/firmware.h new file mode 100644 index 000000000..5c41c5e75 --- /dev/null +++ b/kernel/include/linux/firmware.h @@ -0,0 +1,79 @@ +#ifndef _LINUX_FIRMWARE_H +#define _LINUX_FIRMWARE_H + +#include <linux/types.h> +#include <linux/compiler.h> +#include <linux/gfp.h> + +#define FW_ACTION_NOHOTPLUG 0 +#define FW_ACTION_HOTPLUG 1 + +struct firmware { + size_t size; + const u8 *data; + struct page **pages; + + /* firmware loader private fields */ + void *priv; +}; + +struct module; +struct device; + +struct builtin_fw { + char *name; + void *data; + unsigned long size; +}; + +/* We have to play tricks here much like stringify() to get the + __COUNTER__ macro to be expanded as we want it */ +#define __fw_concat1(x, y) x##y +#define __fw_concat(x, y) __fw_concat1(x, y) + +#define DECLARE_BUILTIN_FIRMWARE(name, blob) \ + DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) + +#define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ + static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ + __used __section(.builtin_fw) = { name, blob, size } + +#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) +int request_firmware(const struct firmware **fw, const char *name, + struct device *device); +int 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)); +int request_firmware_direct(const struct firmware **fw, const char *name, + struct device *device); + +void release_firmware(const struct firmware *fw); +#else +static inline int request_firmware(const struct firmware **fw, + const char *name, + struct device *device) +{ + return -EINVAL; +} +static inline int 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)) +{ + return -EINVAL; +} + +static inline void release_firmware(const struct firmware *fw) +{ +} + +static inline int request_firmware_direct(const struct firmware **fw, + const char *name, + struct device *device) +{ + return -EINVAL; +} + +#endif +#endif |