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Input: i8042 - export i8042_command()

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Export the i8042_command() function which manages the mutual
exclusion with the help of the i8042_lock spinlock. This allows
to access i8042 safely from other parts of the kernel.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Márton Németh 2007-10-22 00:56:52 -04:00 committed by Dmitry Torokhov
parent 82ba56c273
commit 553a05b882
3 changed files with 38 additions and 23 deletions
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4
drivers/input/serio/i8042.c
View file

@ -20,6 +20,7 @@
#include <linux/err.h> #include <linux/err.h>
#include <linux/rcupdate.h> #include <linux/rcupdate.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/i8042.h>
#include <asm/io.h> #include <asm/io.h>
@ -208,7 +209,7 @@ static int __i8042_command(unsigned char *param, int command)
return 0; return 0;
} }
static int i8042_command(unsigned char *param, int command) int i8042_command(unsigned char *param, int command)
{ {
unsigned long flags; unsigned long flags;
int retval; int retval;
@ -219,6 +220,7 @@ static int i8042_command(unsigned char *param, int command)
return retval; return retval;
} }
EXPORT_SYMBOL(i8042_command);
/* /*
* i8042_kbd_write() sends a byte out through the keyboard interface. * i8042_kbd_write() sends a byte out through the keyboard interface.

22
drivers/input/serio/i8042.h
View file

@ -60,28 +60,6 @@
#define I8042_CTR_AUXDIS 0x20 #define I8042_CTR_AUXDIS 0x20
#define I8042_CTR_XLATE 0x40 #define I8042_CTR_XLATE 0x40
/*
* 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
/* /*
* Return codes. * Return codes.
*/ */

35
include/linux/i8042.h Normal file
View file

@ -0,0 +1,35 @@
#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.
*/
/*
* 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
int i8042_command(unsigned char *param, int command);
#endif