[PATCH 07/29] i2c: implement of_find_i2c_adapter_by_node

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/i2c/i2c.c | 11 +++++++++++
 include/i2c/i2c.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/drivers/i2c/i2c.c b/drivers/i2c/i2c.c
index e289a35..9873957 100644
--- a/drivers/i2c/i2c.c
+++ b/drivers/i2c/i2c.c
@@ -405,6 +405,17 @@ struct i2c_adapter *i2c_get_adapter(int busnum)
 	return NULL;
 }
 
+struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node)
+{
+	struct i2c_adapter *adap;
+
+	list_for_each_entry(adap, &adapter_list, list)
+		if (adap->dev.device_node == node)
+			return adap;
+
+	return NULL;
+}
+
 /**
  * i2c_add_numbered_adapter - declare i2c adapter, use static bus number
  * @adapter: the adapter to register (with adap->nr initialized)
diff --git a/include/i2c/i2c.h b/include/i2c/i2c.h
index 81e5daa..f89fefb 100644
--- a/include/i2c/i2c.h
+++ b/include/i2c/i2c.h
@@ -133,6 +133,7 @@ static inline int i2c_register_board_info(int busnum,
 #endif
 extern int i2c_add_numbered_adapter(struct i2c_adapter *adapter);
 struct i2c_adapter *i2c_get_adapter(int busnum);
+struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node);
 
 /* For devices that use several addresses, use i2c_new_dummy() to make
  * client handles for the extra addresses.
-- 
1.9.0