summaryrefslogtreecommitdiffstats
path: root/include/tws.h
diff options
context:
space:
mode:
authorDetlev Zundel <dzu@denx.de>2009-03-30 00:31:32 +0200
committerWolfgang Denk <wd@denx.de>2009-03-30 09:38:36 +0200
commit572e6179adb5447ff42ec2aa5cf3a26decf97583 (patch)
tree1246758c58c67dac35f1adbf4e2b0cfe56b630af /include/tws.h
parent88685b5f62274167ad2ba8a58e108d89ff71955b (diff)
downloadblackbird-obmc-uboot-572e6179adb5447ff42ec2aa5cf3a26decf97583.tar.gz
blackbird-obmc-uboot-572e6179adb5447ff42ec2aa5cf3a26decf97583.zip
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/tws.h')
-rw-r--r--include/tws.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/include/tws.h b/include/tws.h
new file mode 100644
index 0000000000..9dcc4b18a5
--- /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_ */
OpenPOWER on IntegriCloud