source: mainline/kernel/arch/ia32/include/drivers/i8042.h@ b07c332

/*
 * Copyright (c) 2006 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup ia32    
 * @{
 */
/** @file
 */

/**
 * This file implements ia32 specific access to i8042 registers.
 */

#ifndef KERN_ia32_I8042_H_
#define KERN_ia32_I8042_H_

#include <arch/asm.h>
#include <arch/types.h>

#define i8042_DATA              0x60
#define i8042_STATUS            0x64

static inline void i8042_data_write(uint8_t data)
{
        outb(i8042_DATA, data);
}

static inline uint8_t i8042_data_read(void)
{
        return inb(i8042_DATA);
}

static inline uint8_t i8042_status_read(void)
{
        return inb(i8042_STATUS);
}

static inline void i8042_command_write(uint8_t command)
{
        outb(i8042_STATUS, command);
}

#endif

/** @}
 */