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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/input/serio/i8042-unicore32io.h
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/*

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 * Code specific to PKUnity SoC and UniCore ISA

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 *

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 *	Maintained by GUAN Xue-tao <[email protected]>

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 *	Copyright (C) 2001-2011 Guan Xuetao

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 *

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 * This program is free software; you can redistribute it and/or modify

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 * it under the terms of the GNU General Public License version 2 as

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 * published by the Free Software Foundation.

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 */

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#ifndef _I8042_UNICORE32_H

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#define _I8042_UNICORE32_H

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#include <mach/hardware.h>

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/*

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 * Names.

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 */

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#define I8042_KBD_PHYS_DESC "isa0060/serio0"

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#define I8042_AUX_PHYS_DESC "isa0060/serio1"

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#define I8042_MUX_PHYS_DESC "isa0060/serio%d"

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/*

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 * IRQs.

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 */

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#define I8042_KBD_IRQ           IRQ_PS2_KBD

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#define I8042_AUX_IRQ           IRQ_PS2_AUX

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/*

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 * Register numbers.

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 */

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#define I8042_COMMAND_REG	PS2_COMMAND

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#define I8042_STATUS_REG	PS2_STATUS

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#define I8042_DATA_REG		PS2_DATA

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#define I8042_REGION_START	(resource_size_t)(PS2_DATA)

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#define I8042_REGION_SIZE	(resource_size_t)(16)

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static inline int i8042_read_data(void)

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{

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	return readb(I8042_DATA_REG);

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}

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static inline int i8042_read_status(void)

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{

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	return readb(I8042_STATUS_REG);

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}

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static inline void i8042_write_data(int val)

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{

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	writeb(val, I8042_DATA_REG);

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}

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static inline void i8042_write_command(int val)

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{

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	writeb(val, I8042_COMMAND_REG);

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}

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static inline int i8042_platform_init(void)

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{

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	if (!request_mem_region(I8042_REGION_START, I8042_REGION_SIZE, "i8042"))

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		return -EBUSY;

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	i8042_reset = 1;

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	return 0;

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}

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static inline void i8042_platform_exit(void)

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{

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	release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);

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}

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#endif /* _I8042_UNICORE32_H */

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