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Commit 0938643e authored by Stephen Warren's avatar Stephen Warren Committed by Wolfram Sang
Browse files

of/i2c: implement of_find_i2c_adapter_by_node 



This finds the struct i2c_adapter * for a given device tree node. Just
like of_find_i2c_device_by_node.

Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarWolfram Sang <w.sang@pengutronix.de>
parent 643dd09e

drivers/of/of_i2c.c

+14 −0
Original line number Diff line number Diff line
@@ -94,4 +94,18 @@ struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) 
}

EXPORT_SYMBOL(of_find_i2c_device_by_node);



/* must call put_device() when done with returned i2c_adapter device */

struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node)

{

	struct device *dev;



	dev = bus_find_device(&i2c_bus_type, NULL, node,

					 of_dev_node_match);

	if (!dev)

		return NULL;



	return i2c_verify_adapter(dev);

}

EXPORT_SYMBOL(of_find_i2c_adapter_by_node);



MODULE_LICENSE("GPL");

include/linux/of_i2c.h

+4 −0
Original line number Diff line number Diff line
@@ -20,6 +20,10 @@ 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)

{