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56 lines
1.8 KiB
56 lines
1.8 KiB
#ifndef _LIBPS2_H |
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#define _LIBPS2_H |
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/* |
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* Copyright (C) 1999-2002 Vojtech Pavlik |
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* Copyright (C) 2004 Dmitry Torokhov |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 as published by |
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* the Free Software Foundation. |
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*/ |
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#define PS2_CMD_GETID 0x02f2 |
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#define PS2_CMD_RESET_BAT 0x02ff |
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#define PS2_RET_BAT 0xaa |
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#define PS2_RET_ID 0x00 |
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#define PS2_RET_ACK 0xfa |
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#define PS2_RET_NAK 0xfe |
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#define PS2_RET_ERR 0xfc |
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#define PS2_FLAG_ACK 1 /* Waiting for ACK/NAK */ |
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#define PS2_FLAG_CMD 2 /* Waiting for command to finish */ |
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#define PS2_FLAG_CMD1 4 /* Waiting for the first byte of command response */ |
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#define PS2_FLAG_WAITID 8 /* Command execiting is GET ID */ |
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#define PS2_FLAG_NAK 16 /* Last transmission was NAKed */ |
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struct ps2dev { |
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struct serio *serio; |
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/* Ensures that only one command is executing at a time */ |
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struct mutex cmd_mutex; |
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/* Used to signal completion from interrupt handler */ |
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wait_queue_head_t wait; |
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unsigned long flags; |
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unsigned char cmdbuf[8]; |
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unsigned char cmdcnt; |
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unsigned char nak; |
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}; |
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void ps2_init(struct ps2dev *ps2dev, struct serio *serio); |
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int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout); |
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void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout); |
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void ps2_begin_command(struct ps2dev *ps2dev); |
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void ps2_end_command(struct ps2dev *ps2dev); |
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int __ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command); |
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int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command); |
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int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data); |
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int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data); |
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void ps2_cmd_aborted(struct ps2dev *ps2dev); |
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int ps2_is_keyboard_id(char id); |
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#endif /* _LIBPS2_H */
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