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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/libps2.h
5 * Copyright (C) 1999-2002 Vojtech Pavlik
6 * Copyright (C) 2004 Dmitry Torokhov
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.
13 #include <linux/bitops.h>
14 #include <linux/mutex.h>
15 #include <linux/types.h>
16 #include <linux/wait.h>
18 #define PS2_CMD_SETSCALE11 0x00e6
19 #define PS2_CMD_SETRES 0x10e8
20 #define PS2_CMD_GETID 0x02f2
21 #define PS2_CMD_RESET_BAT 0x02ff
23 #define PS2_RET_BAT 0xaa
24 #define PS2_RET_ID 0x00
25 #define PS2_RET_ACK 0xfa
26 #define PS2_RET_NAK 0xfe
27 #define PS2_RET_ERR 0xfc
29 #define PS2_FLAG_ACK BIT(0) /* Waiting for ACK/NAK */
30 #define PS2_FLAG_CMD BIT(1) /* Waiting for a command to finish */
31 #define PS2_FLAG_CMD1 BIT(2) /* Waiting for the first byte of command response */
32 #define PS2_FLAG_WAITID BIT(3) /* Command executing is GET ID */
33 #define PS2_FLAG_NAK BIT(4) /* Last transmission was NAKed */
34 #define PS2_FLAG_ACK_CMD BIT(5) /* Waiting to ACK the command (first) byte */
39 /* Ensures that only one command is executing at a time */
40 struct mutex cmd_mutex
;
42 /* Used to signal completion from interrupt handler */
43 wait_queue_head_t wait
;
51 void ps2_init(struct ps2dev
*ps2dev
, struct serio
*serio
);
52 int ps2_sendbyte(struct ps2dev
*ps2dev
, u8 byte
, unsigned int timeout
);
53 void ps2_drain(struct ps2dev
*ps2dev
, size_t maxbytes
, unsigned int timeout
);
54 void ps2_begin_command(struct ps2dev
*ps2dev
);
55 void ps2_end_command(struct ps2dev
*ps2dev
);
56 int __ps2_command(struct ps2dev
*ps2dev
, u8
*param
, unsigned int command
);
57 int ps2_command(struct ps2dev
*ps2dev
, u8
*param
, unsigned int command
);
58 int ps2_sliced_command(struct ps2dev
*ps2dev
, u8 command
);
59 bool ps2_handle_ack(struct ps2dev
*ps2dev
, u8 data
);
60 bool ps2_handle_response(struct ps2dev
*ps2dev
, u8 data
);
61 void ps2_cmd_aborted(struct ps2dev
*ps2dev
);
62 bool ps2_is_keyboard_id(u8 id
);
64 #endif /* _LIBPS2_H */