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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/linux/i2c-algo-pcf.h
Initial import
Diffstat (limited to 'include/linux/i2c-algo-pcf.h')
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diff --git a/include/linux/i2c-algo-pcf.h b/include/linux/i2c-algo-pcf.h
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+++ b/include/linux/i2c-algo-pcf.h
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+/* ------------------------------------------------------------------------- */
+/* 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 */