projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 6ca27334 | 1 | /* |
| 7e6fd020 IA |
2 | * module/8255.h |
| 3 | * Header file for 8255 | |
| 4 | * | |
| 5 | * COMEDI - Linux Control and Measurement Device Interface | |
| 6 | * Copyright (C) 1998 David A. Schleef <ds@schleef.org> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation; either version 2 of the License, or | |
| 11 | * (at your option) any later version. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| 17 | */ | |
| 6ca27334 DS |
18 | |
| 19 | #ifndef _8255_H | |
| 20 | #define _8255_H | |
| 21 | ||
| 22 | #include "../comedidev.h" | |
| 23 | ||
| f0162091 HS |
24 | #define I8255_SIZE 0x04 |
| 25 | ||
| 26 | #define I8255_DATA_A_REG 0x00 | |
| 27 | #define I8255_DATA_B_REG 0x01 | |
| 28 | #define I8255_DATA_C_REG 0x02 | |
| 29 | #define I8255_CTRL_REG 0x03 | |
| 30 | #define I8255_CTRL_C_LO_IO (1 << 0) | |
| 31 | #define I8255_CTRL_B_IO (1 << 1) | |
| 32 | #define I8255_CTRL_B_MODE (1 << 2) | |
| 33 | #define I8255_CTRL_C_HI_IO (1 << 3) | |
| 34 | #define I8255_CTRL_A_IO (1 << 4) | |
| 35 | #define I8255_CTRL_A_MODE(x) ((x) << 5) | |
| 36 | #define I8255_CTRL_CW (1 << 7) | |
| 37 | ||
| 5c19084b | 38 | int subdev_8255_init(struct comedi_device *, struct comedi_subdevice *, |
| 09d6dd74 HS |
39 | int (*io)(struct comedi_device *, |
| 40 | int, int, int, unsigned long), | |
| 4085e93b | 41 | unsigned long regbase); |
| 6ca27334 | 42 | |
| 5c19084b HS |
43 | int subdev_8255_mm_init(struct comedi_device *, struct comedi_subdevice *, |
| 44 | int (*io)(struct comedi_device *, | |
| 45 | int, int, int, unsigned long), | |
| 46 | unsigned long regbase); | |
| 47 | ||
| 6ca27334 | 48 | #endif |