Initial import

1 files changed, 49 insertions, 0 deletions

diff --git a/include/linux/i2c-algo-pcf.h b/include/linux/i2c-algo-pcf.h
new file mode 100644
index 000000000..538e8f41a
--- /dev/null
+++ b/include/linux/i2c-algo-pcf.h
@@ -0,0 +1,49 @@
+/* ------------------------------------------------------------------------- */
+/* adap-pcf.h i2c driver algorithms for PCF8584 adapters                     */
+/* ------------------------------------------------------------------------- */
+/*   Copyright (C) 1995-97 Simon G. Vogl
+                   1998-99 Hans Berglund
+
+    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., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.							     */
+/* ------------------------------------------------------------------------- */
+
+/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
+   Frodo Looijaard <frodol@dds.nl> */
+
+#ifndef _LINUX_I2C_ALGO_PCF_H
+#define _LINUX_I2C_ALGO_PCF_H
+
+struct i2c_algo_pcf_data {
+	void *data;		/* private data for lolevel routines	*/
+	void (*setpcf) (void *data, int ctl, int val);
+	int  (*getpcf) (void *data, int ctl);
+	int  (*getown) (void *data);
+	int  (*getclock) (void *data);
+	void (*waitforpin) (void *data);
+
+	void (*xfer_begin) (void *data);
+	void (*xfer_end) (void *data);
+
+	/* Multi-master lost arbitration back-off delay (msecs)
+	 * This should be set by the bus adapter or knowledgable client
+	 * if bus is multi-mastered, else zero
+	 */
+	unsigned long lab_mdelay;
+};
+
+int i2c_pcf_add_bus(struct i2c_adapter *);
+
+#endif /* _LINUX_I2C_ALGO_PCF_H */