1 /*
2 * Definitions for ADB (Apple Desktop Bus) support.
3 */
4 #ifndef __ADB_H
5 #define __ADB_H
6
7 /* ADB commands */
8 #define ADB_BUSRESET 0
9 #define ADB_FLUSH(id) (0x01 | ((id) << 4))
10 #define ADB_WRITEREG(id, reg) (0x08 | (reg) | ((id) << 4))
11 #define ADB_READREG(id, reg) (0x0C | (reg) | ((id) << 4))
12
13 /* ADB default device IDs (upper 4 bits of ADB command byte) */
14 #define ADB_DONGLE 1 /* "software execution control" devices */
15 #define ADB_KEYBOARD 2
16 #define ADB_MOUSE 3
17 #define ADB_TABLET 4
18 #define ADB_MODEM 5
19 #define ADB_MISC 7 /* maybe a monitor */
20
21 #define ADB_RET_OK 0
22 #define ADB_RET_TIMEOUT 3
23
24 /* The kind of ADB request. The controller may emulate some
25 or all of those CUDA/PMU packet kinds */
26 #define ADB_PACKET 0
27 #define CUDA_PACKET 1
28 #define ERROR_PACKET 2
29 #define TIMER_PACKET 3
30 #define POWER_PACKET 4
31 #define MACIIC_PACKET 5
32 #define PMU_PACKET 6
33
34 #ifdef __KERNEL__
35
36 struct adb_request {
37 unsigned char data[32];
38 int nbytes;
39 unsigned char reply[32];
40 int reply_len;
41 unsigned char reply_expected;
42 unsigned char sent;
43 unsigned char complete;
44 void (*done)(struct adb_request *);
45 void *arg;
46 struct adb_request *next;
47 };
48
49 struct adb_ids {
50 int nids;
51 unsigned char id[16];
52 };
53
54 /* Structure which encapsulates a low-level ADB driver */
55
56 struct adb_driver {
57 char name[16];
58 int (*probe)(void);
59 int (*init)(void);
60 int (*send_request)(struct adb_request *req, int sync);
61 int (*autopoll)(int devs);
62 void (*poll)(void);
63 int (*reset_bus)(void);
64 };
65
66 /* Values for adb_request flags */
67 #define ADBREQ_REPLY 1 /* expect reply */
68 #define ADBREQ_SYNC 2 /* poll until done */
69 #define ADBREQ_NOSEND 4 /* build the request, but don't send it */
70
71 /* Messages sent thru the client_list notifier. You should NOT stop
72 the operation, at least not with this version */
73 enum adb_message {
74 ADB_MSG_POWERDOWN, /* Currently called before sleep only */
75 ADB_MSG_PRE_RESET, /* Called before resetting the bus */
76 ADB_MSG_POST_RESET /* Called after resetting the bus (re-do init & register) */
77 };
78 extern struct adb_driver *adb_controller;
79 extern struct notifier_block *adb_client_list;
80
81 int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
82 int flags, int nbytes, ...);
83 int adb_register(int default_id,int handler_id,struct adb_ids *ids,
84 void (*handler)(unsigned char *, int, struct pt_regs *, int));
85 int adb_unregister(int index);
86 void adb_poll(void);
87 void adb_input(unsigned char *, int, struct pt_regs *, int);
88 int adb_reset_bus(void);
89
90 int adb_try_handler_change(int address, int new_id);
91 int adb_get_infos(int address, int *original_address, int *handler_id);
92
93 #endif /* __KERNEL__ */
94
95 #endif /* __ADB_H */
96
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