linux-stable/include/linux/i8042.h
Michał Mirosław 7b9c13dd4d Input: i8042 - add missing include
<linux/i8042.h> include uses ENODEV when included with
!IS_ENABLED(CONFIG_SERIO_I8042) and so need to include it.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/49fd4d400d1ab62095e5ed75a6637f883c0d071b.1682795105.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2023-05-01 17:50:18 -07:00

96 lines
2 KiB
C

/* 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