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drivers/of: Add the of_find_i2c_device_by_node function.

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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>
This commit is contained in:
Jon Smirl
2009-01-09 15:49:06 -07:00
committed by Grant Likely
parent f5020384e4
commit 2526c151c3
2 changed files with 22 additions and 0 deletions
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3
include/linux/of_i2c.h
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@@ -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 */