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/*
module/8255.h
Header file for 8255
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 1998 David A. Schleef <ds@schleef.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#ifndef _8255_H
#define _8255_H
#include "../comedidev.h"
#define I8255_SIZE 0x04
#define I8255_DATA_A_REG 0x00
#define I8255_DATA_B_REG 0x01
#define I8255_DATA_C_REG 0x02
#define I8255_CTRL_REG 0x03
#define I8255_CTRL_C_LO_IO (1 << 0)
#define I8255_CTRL_B_IO (1 << 1)
#define I8255_CTRL_B_MODE (1 << 2)
#define I8255_CTRL_C_HI_IO (1 << 3)
#define I8255_CTRL_A_IO (1 << 4)
#define I8255_CTRL_A_MODE(x) ((x) << 5)
#define I8255_CTRL_CW (1 << 7)
int subdev_8255_init(struct comedi_device *, struct comedi_subdevice *,
int (*io)(struct comedi_device *,
int, int, int, unsigned long),
unsigned long regbase);
int subdev_8255_mm_init(struct comedi_device *, struct comedi_subdevice *,
int (*io)(struct comedi_device *,
int, int, int, unsigned long),
unsigned long regbase);
#endif
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