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1 | #ifndef _LIBPS2_H |
2 | #define _LIBPS2_H |
3 | |
4 | /* |
5 | * Copyright (C) 1999-2002 Vojtech Pavlik |
6 | * Copyright (C) 2004 Dmitry Torokhov |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms of the GNU General Public License version 2 as published by |
10 | * the Free Software Foundation. |
11 | */ |
12 | |
13 | |
14 | #define PS2_CMD_GETID 0x02f2 |
15 | #define PS2_CMD_RESET_BAT 0x02ff |
16 | |
17 | #define PS2_RET_BAT 0xaa |
18 | #define PS2_RET_ID 0x00 |
19 | #define PS2_RET_ACK 0xfa |
20 | #define PS2_RET_NAK 0xfe |
21 | #define PS2_RET_ERR 0xfc |
22 | |
23 | #define PS2_FLAG_ACK 1 /* Waiting for ACK/NAK */ |
24 | #define PS2_FLAG_CMD 2 /* Waiting for command to finish */ |
25 | #define PS2_FLAG_CMD1 4 /* Waiting for the first byte of command response */ |
26 | #define PS2_FLAG_WAITID 8 /* Command execiting is GET ID */ |
27 | #define PS2_FLAG_NAK 16 /* Last transmission was NAKed */ |
28 | |
29 | struct ps2dev { |
30 | struct serio *serio; |
31 | |
32 | /* Ensures that only one command is executing at a time */ |
33 | struct mutex cmd_mutex; |
34 | |
35 | /* Used to signal completion from interrupt handler */ |
36 | wait_queue_head_t wait; |
37 | |
38 | unsigned long flags; |
39 | unsigned char cmdbuf[8]; |
40 | unsigned char cmdcnt; |
41 | unsigned char nak; |
42 | }; |
43 | |
44 | void ps2_init(struct ps2dev *ps2dev, struct serio *serio); |
45 | int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout); |
46 | void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout); |
47 | void ps2_begin_command(struct ps2dev *ps2dev); |
48 | void ps2_end_command(struct ps2dev *ps2dev); |
49 | int __ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command); |
50 | int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command); |
51 | int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data); |
52 | int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data); |
53 | void ps2_cmd_aborted(struct ps2dev *ps2dev); |
54 | int ps2_is_keyboard_id(char id); |
55 | |
56 | #endif /* _LIBPS2_H */ |
57 |
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