/* 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 */