Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / i2c-algo-bit.h

diff --git a/kernel/include/linux/i2c-algo-bit.h b/kernel/include/linux/i2c-algo-bit.h
new file mode 100644 (file)
index 0000000..63904ba
--- /dev/null
+++ b/kernel/include/linux/i2c-algo-bit.h
@@ -0,0 +1,55 @@
+/* ------------------------------------------------------------------------- */
+/* i2c-algo-bit.h i2c driver algorithms for bit-shift adapters               */
+/* ------------------------------------------------------------------------- */
+/*   Copyright (C) 1995-99 Simon G. Vogl
+
+    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_BIT_H
+#define _LINUX_I2C_ALGO_BIT_H
+
+/* --- Defines for bit-adapters ---------------------------------------        */
+/*
+ * This struct contains the hw-dependent functions of bit-style adapters to
+ * manipulate the line states, and to init any hw-specific features. This is
+ * only used if you have more than one hw-type of adapter running.
+ */
+struct i2c_algo_bit_data {
+       void *data;             /* private data for lowlevel routines */
+       void (*setsda) (void *data, int state);
+       void (*setscl) (void *data, int state);
+       int  (*getsda) (void *data);
+       int  (*getscl) (void *data);
+       int  (*pre_xfer)  (struct i2c_adapter *);
+       void (*post_xfer) (struct i2c_adapter *);
+
+       /* local settings */
+       int udelay;             /* half clock cycle time in us,
+                                  minimum 2 us for fast-mode I2C,
+                                  minimum 5 us for standard-mode I2C and SMBus,
+                                  maximum 50 us for SMBus */
+       int timeout;            /* in jiffies */
+};
+
+int i2c_bit_add_bus(struct i2c_adapter *);
+int i2c_bit_add_numbered_bus(struct i2c_adapter *);
+extern const struct i2c_algorithm i2c_bit_algo;
+
+#endif /* _LINUX_I2C_ALGO_BIT_H */