| 1 | #ifndef _LIBPS2_H |
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| 2 | #define _LIBPS2_H |
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| 3 | |
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| 4 | /* |
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| 5 | * Copyright (C) 1999-2002 Vojtech Pavlik |
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| 6 | * Copyright (C) 2004 Dmitry Torokhov |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or modify it |
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| 9 | * under the terms of the GNU General Public License version 2 as published by |
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| 10 | * the Free Software Foundation. |
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| 11 | */ |
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| 12 | |
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| 13 | |
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| 14 | #define PS2_CMD_GETID 0x02f2 |
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| 15 | #define PS2_CMD_RESET_BAT 0x02ff |
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| 16 | |
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| 17 | #define PS2_RET_BAT 0xaa |
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| 18 | #define PS2_RET_ID 0x00 |
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| 19 | #define PS2_RET_ACK 0xfa |
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| 20 | #define PS2_RET_NAK 0xfe |
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| 21 | |
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| 22 | #define PS2_FLAG_ACK 1 /* Waiting for ACK/NAK */ |
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| 23 | #define PS2_FLAG_CMD 2 /* Waiting for command to finish */ |
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| 24 | #define PS2_FLAG_CMD1 4 /* Waiting for the first byte of command response */ |
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| 25 | #define PS2_FLAG_WAITID 8 /* Command execiting is GET ID */ |
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| 26 | |
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| 27 | struct ps2dev { |
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| 28 | struct serio *serio; |
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| 29 | |
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| 30 | /* Ensures that only one command is executing at a time */ |
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| 31 | struct semaphore cmd_sem; |
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| 32 | |
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| 33 | /* Used to signal completion from interrupt handler */ |
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| 34 | wait_queue_head_t wait; |
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| 35 | |
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| 36 | unsigned long flags; |
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| 37 | unsigned char cmdbuf[6]; |
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| 38 | unsigned char cmdcnt; |
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| 39 | unsigned char nak; |
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| 40 | }; |
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| 41 | |
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| 42 | void ps2_init(struct ps2dev *ps2dev, struct serio *serio); |
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| 43 | int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout); |
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| 44 | int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command); |
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| 45 | int ps2_schedule_command(struct ps2dev *ps2dev, unsigned char *param, int command); |
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| 46 | int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data); |
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| 47 | int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data); |
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| 48 | void ps2_cmd_aborted(struct ps2dev *ps2dev); |
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| 49 | |
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| 50 | #endif /* _LIBPS2_H */ |
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