diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/am9513.h')
-rw-r--r-- | drivers/staging/comedi/drivers/am9513.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/am9513.h b/drivers/staging/comedi/drivers/am9513.h new file mode 100644 index 000000000000..f533cf1658cf --- /dev/null +++ b/drivers/staging/comedi/drivers/am9513.h @@ -0,0 +1,79 @@ +/* + 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 |