i8042-unicore32io.h

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/*
 * Code specific to PKUnity SoC and UniCore ISA
 *
 *  Maintained by GUAN Xue-tao <[email protected]>
 *  Copyright (C) 2001-2011 Guan Xuetao
 *
 * 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.
 */
#ifndef _I8042_UNICORE32_H
#define _I8042_UNICORE32_H

#include <mach/hardware.h>

/*
 * Names.
 */
#define I8042_KBD_PHYS_DESC "isa0060/serio0"
#define I8042_AUX_PHYS_DESC "isa0060/serio1"
#define I8042_MUX_PHYS_DESC "isa0060/serio%d"

/*
 * IRQs.
 */
#define I8042_KBD_IRQ           IRQ_PS2_KBD
#define I8042_AUX_IRQ           IRQ_PS2_AUX

/*
 * Register numbers.
 */
#define I8042_COMMAND_REG   PS2_COMMAND
#define I8042_STATUS_REG    PS2_STATUS
#define I8042_DATA_REG      PS2_DATA

#define I8042_REGION_START  (resource_size_t)(PS2_DATA)
#define I8042_REGION_SIZE   (resource_size_t)(16)

static inline int i8042_read_data(void)
{
    return readb(I8042_DATA_REG);
}

static inline int i8042_read_status(void)
{
    return readb(I8042_STATUS_REG);
}

static inline void i8042_write_data(int val)
{
    writeb(val, I8042_DATA_REG);
}

static inline void i8042_write_command(int val)
{
    writeb(val, I8042_COMMAND_REG);
}

static inline int i8042_platform_init(void)
{
    if (!request_mem_region(I8042_REGION_START, I8042_REGION_SIZE, "i8042"))
        return -EBUSY;

    i8042_reset = 1;
    return 0;
}

static inline void i8042_platform_exit(void)
{
    release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);
}

#endif /* _I8042_UNICORE32_H */