[linux-2.6-block.git] / include / linux / i8042.h

/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _LINUX_I8042_H
#define _LINUX_I8042_H


#include <linux/errno.h>
#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)
{
}

static inline void i8042_unlock_chip(void)
{
}

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

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
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
553a05b8 MN	2	#ifndef _LINUX_I8042_H
	3	#define _LINUX_I8042_H
	4
553a05b8	5
7b9c13dd	6	#include <linux/errno.h>
181d683d	7	#include <linux/types.h>
553a05b8 MN	8
	9	/*
	10	* Standard commands.
	11	*/
	12
	13	#define I8042_CMD_CTL_RCTR 0x0120
	14	#define I8042_CMD_CTL_WCTR 0x1060
	15	#define I8042_CMD_CTL_TEST 0x01aa
	16
	17	#define I8042_CMD_KBD_DISABLE 0x00ad
	18	#define I8042_CMD_KBD_ENABLE 0x00ae
	19	#define I8042_CMD_KBD_TEST 0x01ab
	20	#define I8042_CMD_KBD_LOOP 0x11d2
	21
	22	#define I8042_CMD_AUX_DISABLE 0x00a7
	23	#define I8042_CMD_AUX_ENABLE 0x00a8
	24	#define I8042_CMD_AUX_TEST 0x01a9
	25	#define I8042_CMD_AUX_SEND 0x10d4
	26	#define I8042_CMD_AUX_LOOP 0x11d3
	27
	28	#define I8042_CMD_MUX_PFX 0x0090
	29	#define I8042_CMD_MUX_SEND 0x1090
	30
1ea4c161 AM	31	/*
	32	* Status register bits.
	33	*/
	34
	35	#define I8042_STR_PARITY 0x80
	36	#define I8042_STR_TIMEOUT 0x40
	37	#define I8042_STR_AUXDATA 0x20
	38	#define I8042_STR_KEYLOCK 0x10
	39	#define I8042_STR_CMDDAT 0x08
	40	#define I8042_STR_MUXERR 0x04
	41	#define I8042_STR_IBF 0x02
	42	#define I8042_STR_OBF 0x01
	43
	44	/*
	45	* Control register bits.
	46	*/
	47
	48	#define I8042_CTR_KBDINT 0x01
	49	#define I8042_CTR_AUXINT 0x02
	50	#define I8042_CTR_IGNKEYLOCK 0x08
	51	#define I8042_CTR_KBDDIS 0x10
	52	#define I8042_CTR_AUXDIS 0x20
	53	#define I8042_CTR_XLATE 0x40
	54
181d683d DT	55	struct serio;
	56
	57	#if defined(CONFIG_SERIO_I8042) \|\| defined(CONFIG_SERIO_I8042_MODULE)
	58
	59	void i8042_lock_chip(void);
	60	void i8042_unlock_chip(void);
553a05b8	61	int i8042_command(unsigned char *param, int command);
967c9ef9 MG	62	int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
	63	struct serio *serio));
	64	int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
	65	struct serio *serio));
181d683d DT	66
	67	#else
	68
c59690fa	69	static inline void i8042_lock_chip(void)
181d683d DT	70	{
	71	}
	72
c59690fa	73	static inline void i8042_unlock_chip(void)
181d683d DT	74	{
	75	}
	76
c59690fa	77	static inline int i8042_command(unsigned char *param, int command)
181d683d	78	{
967c9ef9	79	return -ENODEV;
181d683d DT	80	}
181d683d DT	81
c59690fa	82	static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
967c9ef9 MG	83	struct serio *serio))
	84	{
	85	return -ENODEV;
	86	}
	87
c59690fa	88	static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
967c9ef9 MG	89	struct serio *serio))
	90	{
	91	return -ENODEV;
	92	}
	93
181d683d	94	#endif
553a05b8 MN	95
553a05b8 MN	96	#endif