first commit

1 files changed, 46 insertions, 0 deletions

diff --git a/include/linux/of_i2c.h b/include/linux/of_i2c.h
new file mode 100644
index 000000000..cfb545cd8
--- /dev/null
+++ b/include/linux/of_i2c.h
@@ -0,0 +1,46 @@
+/*
+ * Generic I2C API implementation for PowerPC.
+ *
+ * Copyright (c) 2008 Jochen Friedrich <jochen@scram.de>
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_OF_I2C_H
+#define __LINUX_OF_I2C_H
+
+#if defined(CONFIG_OF_I2C) || defined(CONFIG_OF_I2C_MODULE)
+#include <linux/i2c.h>
+
+extern void of_i2c_register_devices(struct i2c_adapter *adap);
+
+/* must call put_device() when done with returned i2c_client device */
+extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
+
+/* must call put_device() when done with returned i2c_adapter device */
+extern struct i2c_adapter *of_find_i2c_adapter_by_node(
+						struct device_node *node);
+
+#else
+static inline void of_i2c_register_devices(struct i2c_adapter *adap)
+{
+	return;
+}
+
+static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
+{
+	return NULL;
+}
+
+/* must call put_device() when done with returned i2c_adapter device */
+static inline struct i2c_adapter *of_find_i2c_adapter_by_node(
+						struct device_node *node)
+{
+	return NULL;
+}
+#endif /* CONFIG_OF_I2C */
+
+#endif /* __LINUX_OF_I2C_H */