| /* |
| * 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 |
