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author | Detlev Zundel <dzu@denx.de> | 2009-03-29 22:31:32 (GMT) |
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committer | Wolfgang Denk <wd@denx.de> | 2009-03-30 07:38:36 (GMT) |
commit | 572e6179adb5447ff42ec2aa5cf3a26decf97583 (patch) | |
tree | 1246758c58c67dac35f1adbf4e2b0cfe56b630af /include | |
parent | 88685b5f62274167ad2ba8a58e108d89ff71955b (diff) | |
download | u-boot-572e6179adb5447ff42ec2aa5cf3a26decf97583.tar.xz |
drivers/twserial: Add protocol driver for "three wire serial" interface.
This pretty unintelligent interface is used on some RTC chips.
Signed-off-by: Detlev Zundel <dzu@denx.de>
Diffstat (limited to 'include')
-rw-r--r-- | include/tws.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/tws.h b/include/tws.h new file mode 100644 index 0000000..9dcc4b1 --- /dev/null +++ b/include/tws.h @@ -0,0 +1,38 @@ +/* + * (C) Copyright 2009 + * Detlev Zundel, DENX Software Engineering, dzu@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#ifndef _TWS_H_ +#define _TWS_H_ + +/* + * Read/Write interface: + * buffer: Where to read/write the data + * len: How many bits to read/write + * + * Returns: 0 on success, not 0 on failure + */ +int tws_read(uchar *buffer, int len); +int tws_write(uchar *buffer, int len); + +#endif /* _TWS_H_ */ |