/drivers/staging/comedi/drivers/am9513.h
https://bitbucket.org/wisechild/galaxy-nexus · C++ Header · 79 lines · 36 code · 14 blank · 29 comment · 4 complexity · 5ca63f68aade75df387ad769cb65203a MD5 · raw file
- /*
- module/am9513.h
- value added preprocessor definitions for Am9513 timer chip
- 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.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef _AM9513_H_
- #define _AM9513_H_
- #if 0
- /*
- * Before including this file, the following need to be defined:
- */
- #define Am9513_8BITBUS xxx
- /* or */
- #define Am9513_16BITBUS xxx
- #define Am9513_output_control(a) xxx
- #define Am9513_input_status() xxx
- #define Am9513_output_data(a) xxx
- #define Am9513_input_data() xxx
- #endif
- /*
- *
- */
- #ifdef Am9513_8BITBUS
- #define Am9513_write_register(reg, val) \
- do { \
- Am9513_output_control(reg); \
- Am9513_output_data(val>>8); \
- Am9513_output_data(val&0xff); \
- } while (0)
- #define Am9513_read_register(reg, val) \
- do { \
- Am9513_output_control(reg); \
- val = Am9513_input_data()<<8; \
- val |= Am9513_input_data(); \
- } while (0)
- #else /* Am9513_16BITBUS */
- #define Am9513_write_register(reg, val) \
- do { \
- Am9513_output_control(reg); \
- Am9513_output_data(val); \
- } while (0)
- #define Am9513_read_register(reg, val) \
- do { \
- Am9513_output_control(reg); \
- val = Am9513_input_data(); \
- } while (0)
- #endif
- #endif