[deliverable/linux.git] / 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);
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
Commit	Line	Data
	1	#ifndef _LINUX_I8042_H
	2	#define _LINUX_I8042_H
	3
	4	/*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License version 2 as published by
	7	* the Free Software Foundation.
	8	*/
	9
	10	#include <linux/types.h>
	11
	12	/*
	13	* Standard commands.
	14	*/
	15
	16	#define I8042_CMD_CTL_RCTR 0x0120
	17	#define I8042_CMD_CTL_WCTR 0x1060
	18	#define I8042_CMD_CTL_TEST 0x01aa
	19
	20	#define I8042_CMD_KBD_DISABLE 0x00ad
	21	#define I8042_CMD_KBD_ENABLE 0x00ae
	22	#define I8042_CMD_KBD_TEST 0x01ab
	23	#define I8042_CMD_KBD_LOOP 0x11d2
	24
	25	#define I8042_CMD_AUX_DISABLE 0x00a7
	26	#define I8042_CMD_AUX_ENABLE 0x00a8
	27	#define I8042_CMD_AUX_TEST 0x01a9
	28	#define I8042_CMD_AUX_SEND 0x10d4
	29	#define I8042_CMD_AUX_LOOP 0x11d3
	30
	31	#define I8042_CMD_MUX_PFX 0x0090
	32	#define I8042_CMD_MUX_SEND 0x1090
	33
	34	/*
	35	* Status register bits.
	36	*/
	37
	38	#define I8042_STR_PARITY 0x80
	39	#define I8042_STR_TIMEOUT 0x40
	40	#define I8042_STR_AUXDATA 0x20
	41	#define I8042_STR_KEYLOCK 0x10
	42	#define I8042_STR_CMDDAT 0x08
	43	#define I8042_STR_MUXERR 0x04
	44	#define I8042_STR_IBF 0x02
	45	#define I8042_STR_OBF 0x01
	46
	47	/*
	48	* Control register bits.
	49	*/
	50
	51	#define I8042_CTR_KBDINT 0x01
	52	#define I8042_CTR_AUXINT 0x02
	53	#define I8042_CTR_IGNKEYLOCK 0x08
	54	#define I8042_CTR_KBDDIS 0x10
	55	#define I8042_CTR_AUXDIS 0x20
	56	#define I8042_CTR_XLATE 0x40
	57
	58	struct serio;
	59
	60	#if defined(CONFIG_SERIO_I8042) \|\| defined(CONFIG_SERIO_I8042_MODULE)
	61
	62	void i8042_lock_chip(void);
	63	void i8042_unlock_chip(void);
	64	int i8042_command(unsigned char *param, int command);
	65	bool i8042_check_port_owner(const struct serio *);
	66	int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
	67	struct serio *serio));
	68	int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
	69	struct serio *serio));
	70
	71	#else
	72
	73	static inline void i8042_lock_chip(void)
	74	{
	75	}
	76
	77	static inline void i8042_unlock_chip(void)
	78	{
	79	}
	80
	81	static inline int i8042_command(unsigned char *param, int command)
	82	{
	83	return -ENODEV;
	84	}
	85
	86	static inline bool i8042_check_port_owner(const struct serio *serio)
	87	{
	88	return false;
	89	}
	90
	91	static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
	92	struct serio *serio))
	93	{
	94	return -ENODEV;
	95	}
	96
	97	static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
	98	struct serio *serio))
	99	{
	100	return -ENODEV;
	101	}
	102
	103	#endif
	104
	105	#endif