LXR linux/include/linux/adb.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Definitions for ADB (Apple Desktop Bus) support.
   4 */
   5#ifndef __ADB_H
   6#define __ADB_H
   7
   8#include <uapi/linux/adb.h>
   9
  10
  11struct adb_request {
  12        unsigned char data[32];
  13        int nbytes;
  14        unsigned char reply[32];
  15        int reply_len;
  16        unsigned char reply_expected;
  17        unsigned char sent;
  18        unsigned char complete;
  19        void (*done)(struct adb_request *);
  20        void *arg;
  21        struct adb_request *next;
  22};
  23
  24struct adb_ids {
  25        int nids;
  26        unsigned char id[16];
  27};
  28
  29/* Structure which encapsulates a low-level ADB driver */
  30
  31struct adb_driver {
  32        char name[16];
  33        int (*probe)(void);
  34        int (*init)(void);
  35        int (*send_request)(struct adb_request *req, int sync);
  36        int (*autopoll)(int devs);
  37        void (*poll)(void);
  38        int (*reset_bus)(void);
  39};
  40
  41/* Values for adb_request flags */
  42#define ADBREQ_REPLY    1       /* expect reply */
  43#define ADBREQ_SYNC     2       /* poll until done */
  44#define ADBREQ_NOSEND   4       /* build the request, but don't send it */
  45
  46/* Messages sent thru the client_list notifier. You should NOT stop
  47   the operation, at least not with this version */
  48enum adb_message {
  49    ADB_MSG_POWERDOWN,  /* Currently called before sleep only */
  50    ADB_MSG_PRE_RESET,  /* Called before resetting the bus */
  51    ADB_MSG_POST_RESET  /* Called after resetting the bus (re-do init & register) */
  52};
  53extern struct blocking_notifier_head adb_client_list;
  54
  55int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
  56                int flags, int nbytes, ...);
  57int adb_register(int default_id,int handler_id,struct adb_ids *ids,
  58                 void (*handler)(unsigned char *, int, int));
  59int adb_unregister(int index);
  60void adb_poll(void);
  61void adb_input(unsigned char *, int, int);
  62int adb_reset_bus(void);
  63
  64int adb_try_handler_change(int address, int new_id);
  65int adb_get_infos(int address, int *original_address, int *handler_id);
  66
  67#endif /* __ADB_H */
  68