v4.19.13 snapshot.
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
new file mode 100644
index 0000000..2dd566c
--- /dev/null
+++ b/include/linux/firmware.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#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 firmware_request_nowarn(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);
+int request_firmware_into_buf(const struct firmware **firmware_p,
+ const char *name, struct device *device, void *buf, size_t size);
+
+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 firmware_request_nowarn(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;
+}
+
+static inline int request_firmware_into_buf(const struct firmware **firmware_p,
+ const char *name, struct device *device, void *buf, size_t size)
+{
+ return -EINVAL;
+}
+
+#endif
+
+int firmware_request_cache(struct device *device, const char *name);
+
+#endif