mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.9 KiB
61 lines
1.9 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
#ifndef _LIBPS2_H |
|
#define _LIBPS2_H |
|
|
|
/* |
|
* Copyright (C) 1999-2002 Vojtech Pavlik |
|
* Copyright (C) 2004 Dmitry Torokhov |
|
*/ |
|
|
|
#include <linux/bitops.h> |
|
#include <linux/mutex.h> |
|
#include <linux/types.h> |
|
#include <linux/wait.h> |
|
|
|
#define PS2_CMD_SETSCALE11 0x00e6 |
|
#define PS2_CMD_SETRES 0x10e8 |
|
#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 BIT(0) /* Waiting for ACK/NAK */ |
|
#define PS2_FLAG_CMD BIT(1) /* Waiting for a command to finish */ |
|
#define PS2_FLAG_CMD1 BIT(2) /* Waiting for the first byte of command response */ |
|
#define PS2_FLAG_WAITID BIT(3) /* Command executing is GET ID */ |
|
#define PS2_FLAG_NAK BIT(4) /* Last transmission was NAKed */ |
|
#define PS2_FLAG_ACK_CMD BIT(5) /* Waiting to ACK the command (first) byte */ |
|
|
|
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; |
|
u8 cmdbuf[8]; |
|
u8 cmdcnt; |
|
u8 nak; |
|
}; |
|
|
|
void ps2_init(struct ps2dev *ps2dev, struct serio *serio); |
|
int ps2_sendbyte(struct ps2dev *ps2dev, u8 byte, unsigned int timeout); |
|
void ps2_drain(struct ps2dev *ps2dev, size_t maxbytes, unsigned int timeout); |
|
void ps2_begin_command(struct ps2dev *ps2dev); |
|
void ps2_end_command(struct ps2dev *ps2dev); |
|
int __ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command); |
|
int ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command); |
|
int ps2_sliced_command(struct ps2dev *ps2dev, u8 command); |
|
bool ps2_handle_ack(struct ps2dev *ps2dev, u8 data); |
|
bool ps2_handle_response(struct ps2dev *ps2dev, u8 data); |
|
void ps2_cmd_aborted(struct ps2dev *ps2dev); |
|
bool ps2_is_keyboard_id(u8 id); |
|
|
|
#endif /* _LIBPS2_H */
|
|
|