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authorJon Smirl <jonsmirl@gmail.com>2009-01-09 15:49:06 -0700
committerGrant Likely <grant.likely@secretlab.ca>2009-01-09 15:49:06 -0700
commit2526c151c31358aec66b63921dd712bbec5ee0cb (patch)
treeee1cd5878c6970d469e348f2440c5d0074def379 /include
parentf5020384e4fa8ab9397aa6fa176e61e9bf7947f7 (diff)
drivers/of: Add the of_find_i2c_device_by_node function.
The of_find_i2c_device_by_node function allows you to follow a reference in the device tree to an i2c device node and then locate the linux device instantiated by the device tree. Example use: an I2S bus driver finding the i2c_device instance for a codec described by a device tree node. This was waiting for Anton's i2c patches that were just added. Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include')
-rw-r--r--include/linux/of_i2c.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/of_i2c.h b/include/linux/of_i2c.h
index bd2a870ec296..34974b5a76f7 100644
--- a/include/linux/of_i2c.h
+++ b/include/linux/of_i2c.h
@@ -17,4 +17,7 @@
void of_register_i2c_devices(struct i2c_adapter *adap,
struct device_node *adap_node);
+/* must call put_device() when done with returned i2c_client device */
+struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
+
#endif /* __LINUX_OF_I2C_H */