v4.19.13 snapshot.
diff --git a/include/linux/adb.h b/include/linux/adb.h
new file mode 100644
index 0000000..f6306fc
--- /dev/null
+++ b/include/linux/adb.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Definitions for ADB (Apple Desktop Bus) support.
+ */
+#ifndef __ADB_H
+#define __ADB_H
+
+#include <uapi/linux/adb.h>
+
+
+struct adb_request {
+ unsigned char data[32];
+ int nbytes;
+ unsigned char reply[32];
+ int reply_len;
+ unsigned char reply_expected;
+ unsigned char sent;
+ unsigned char complete;
+ void (*done)(struct adb_request *);
+ void *arg;
+ struct adb_request *next;
+};
+
+struct adb_ids {
+ int nids;
+ unsigned char id[16];
+};
+
+/* Structure which encapsulates a low-level ADB driver */
+
+struct adb_driver {
+ char name[16];
+ int (*probe)(void);
+ int (*init)(void);
+ int (*send_request)(struct adb_request *req, int sync);
+ int (*autopoll)(int devs);
+ void (*poll)(void);
+ int (*reset_bus)(void);
+};
+
+/* Values for adb_request flags */
+#define ADBREQ_REPLY 1 /* expect reply */
+#define ADBREQ_SYNC 2 /* poll until done */
+#define ADBREQ_NOSEND 4 /* build the request, but don't send it */
+
+/* Messages sent thru the client_list notifier. You should NOT stop
+ the operation, at least not with this version */
+enum adb_message {
+ ADB_MSG_POWERDOWN, /* Currently called before sleep only */
+ ADB_MSG_PRE_RESET, /* Called before resetting the bus */
+ ADB_MSG_POST_RESET /* Called after resetting the bus (re-do init & register) */
+};
+extern struct blocking_notifier_head adb_client_list;
+
+int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
+ int flags, int nbytes, ...);
+int adb_register(int default_id,int handler_id,struct adb_ids *ids,
+ void (*handler)(unsigned char *, int, int));
+int adb_unregister(int index);
+void adb_poll(void);
+void adb_input(unsigned char *, int, int);
+int adb_reset_bus(void);
+
+int adb_try_handler_change(int address, int new_id);
+int adb_get_infos(int address, int *original_address, int *handler_id);
+
+#endif /* __ADB_H */