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i2c: implement of_find_i2c_adapter_by_node 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-03-13 09:15:56 +01:00
parent c9b67dc0f3
commit 57eb30b265
2 changed files with 12 additions and 0 deletions
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11
drivers/i2c/i2c.c
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@ -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)

1
include/i2c/i2c.h
View File

@ -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.