mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 14:43:58 +08:00
80524f083e
Cypress PS/2 Trackpad (drivers/input/mouse/cypress_ps2.c) needs this larger cmdbuf[] to handle 8-byte packet responses. Signed-off-by: Kamal Mostafa <kamal@canonical.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
#ifndef _LIBPS2_H
|
|
#define _LIBPS2_H
|
|
|
|
/*
|
|
* Copyright (C) 1999-2002 Vojtech Pavlik
|
|
* Copyright (C) 2004 Dmitry Torokhov
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published by
|
|
* the Free Software Foundation.
|
|
*/
|
|
|
|
|
|
#define PS2_CMD_GETID 0x02f2
|
|
#define PS2_CMD_RESET_BAT 0x02ff
|
|
|
|
#define PS2_RET_BAT 0xaa
|
|
#define PS2_RET_ID 0x00
|
|
#define PS2_RET_ACK 0xfa
|
|
#define PS2_RET_NAK 0xfe
|
|
#define PS2_RET_ERR 0xfc
|
|
|
|
#define PS2_FLAG_ACK 1 /* Waiting for ACK/NAK */
|
|
#define PS2_FLAG_CMD 2 /* Waiting for command to finish */
|
|
#define PS2_FLAG_CMD1 4 /* Waiting for the first byte of command response */
|
|
#define PS2_FLAG_WAITID 8 /* Command execiting is GET ID */
|
|
#define PS2_FLAG_NAK 16 /* Last transmission was NAKed */
|
|
|
|
struct ps2dev {
|
|
struct serio *serio;
|
|
|
|
/* Ensures that only one command is executing at a time */
|
|
struct mutex cmd_mutex;
|
|
|
|
/* Used to signal completion from interrupt handler */
|
|
wait_queue_head_t wait;
|
|
|
|
unsigned long flags;
|
|
unsigned char cmdbuf[8];
|
|
unsigned char cmdcnt;
|
|
unsigned char nak;
|
|
};
|
|
|
|
void ps2_init(struct ps2dev *ps2dev, struct serio *serio);
|
|
int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout);
|
|
void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout);
|
|
void ps2_begin_command(struct ps2dev *ps2dev);
|
|
void ps2_end_command(struct ps2dev *ps2dev);
|
|
int __ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command);
|
|
int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command);
|
|
int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data);
|
|
int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data);
|
|
void ps2_cmd_aborted(struct ps2dev *ps2dev);
|
|
int ps2_is_keyboard_id(char id);
|
|
|
|
#endif /* _LIBPS2_H */
|