blob: a710bddda4ebaade343bd925bf7f9c7fb9fc20a5 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
22#define PS2_FLAG_ACK 1 /* Waiting for ACK/NAK */
23#define PS2_FLAG_CMD 2 /* Waiting for command to finish */
24#define PS2_FLAG_CMD1 4 /* Waiting for the first byte of command response */
25#define PS2_FLAG_WAITID 8 /* Command execiting is GET ID */
26
27struct ps2dev {
28 struct serio *serio;
29
30 /* Ensures that only one command is executing at a time */
31 struct semaphore cmd_sem;
32
33 /* Used to signal completion from interrupt handler */
34 wait_queue_head_t wait;
35
36 unsigned long flags;
37 unsigned char cmdbuf[6];
38 unsigned char cmdcnt;
39 unsigned char nak;
40};
41
42void ps2_init(struct ps2dev *ps2dev, struct serio *serio);
43int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout);
Dmitry Torokhovc6117632005-06-01 02:39:51 -050044void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -070045int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command);
46int ps2_schedule_command(struct ps2dev *ps2dev, unsigned char *param, int command);
47int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data);
48int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data);
49void ps2_cmd_aborted(struct ps2dev *ps2dev);
50
51#endif /* _LIBPS2_H */