i8042.h

Go to the documentation of this file.

#ifndef _LINUX_I8042_H
#define _LINUX_I8042_H

/*
 * 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.
 */

#include <linux/types.h>

/*
 * Standard commands.
 */

#define I8042_CMD_CTL_RCTR  0x0120
#define I8042_CMD_CTL_WCTR  0x1060
#define I8042_CMD_CTL_TEST  0x01aa

#define I8042_CMD_KBD_DISABLE   0x00ad
#define I8042_CMD_KBD_ENABLE    0x00ae
#define I8042_CMD_KBD_TEST  0x01ab
#define I8042_CMD_KBD_LOOP  0x11d2

#define I8042_CMD_AUX_DISABLE   0x00a7
#define I8042_CMD_AUX_ENABLE    0x00a8
#define I8042_CMD_AUX_TEST  0x01a9
#define I8042_CMD_AUX_SEND  0x10d4
#define I8042_CMD_AUX_LOOP  0x11d3

#define I8042_CMD_MUX_PFX   0x0090
#define I8042_CMD_MUX_SEND  0x1090

struct serio;

#if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE)

void i8042_lock_chip(void);
void i8042_unlock_chip(void);
int i8042_command(unsigned char *param, int command);
bool i8042_check_port_owner(const struct serio *);
int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
                    struct serio *serio));
int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
                       struct serio *serio));

#else

static inline void i8042_lock_chip(void)
{
}

static inline void i8042_unlock_chip(void)
{
}

static inline int i8042_command(unsigned char *param, int command)
{
    return -ENODEV;
}

static inline bool i8042_check_port_owner(const struct serio *serio)
{
    return false;
}

static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
                    struct serio *serio))
{
    return -ENODEV;
}

static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
                       struct serio *serio))
{
    return -ENODEV;
}

#endif

#endif