Release 4.12 include/linux/i8042.h

#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

/*
 * Status register bits.
 */


#define I8042_STR_PARITY	0x80

#define I8042_STR_TIMEOUT	0x40

#define I8042_STR_AUXDATA	0x20

#define I8042_STR_KEYLOCK	0x10

#define I8042_STR_CMDDAT	0x08

#define I8042_STR_MUXERR	0x04

#define I8042_STR_IBF		0x02

#define I8042_STR_OBF		0x01

/*
 * Control register bits.
 */


#define I8042_CTR_KBDINT	0x01

#define I8042_CTR_AUXINT	0x02

#define I8042_CTR_IGNKEYLOCK	0x08

#define I8042_CTR_KBDDIS	0x10

#define I8042_CTR_AUXDIS	0x20

#define I8042_CTR_XLATE		0x40

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);
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)
{
}

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static inline void i8042_unlock_chip(void)
{
}

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

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

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

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#endif

#endif
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Directory: include/linux

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