This function provides a single call for all I2C devices which need to
match firstly using traditional OF means i.e by of_node, then if that
fails we attempt to match using the supplied I2C client name with a
list of supplied compatible strings with the '<vendor>,' string
removed. The latter is required due to the unruly naming conventions
used currently by I2C devices.
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
drivers/i2c/i2c-core.c | 13 +++++++++++++
include/linux/i2c.h | 9 +++++++++
2 files changed, 22 insertions(+)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index face8f9..80a2f2e 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1115,6 +1115,19 @@ const struct of_device_id
return NULL;
}
EXPORT_SYMBOL_GPL(i2c_of_match_device_strip_vendor);
+
+const struct of_device_id
+*i2c_of_match_device(const struct of_device_id *matches, struct device *dev)
+{
+ const struct of_device_id *match;
+
+ match = of_match_device(matches, dev);
+ if (match)
+ return match;
+
+ return i2c_of_match_device_strip_vendor(matches, dev);
+}
+EXPORT_SYMBOL_GPL(i2c_of_match_device);
#else
static void of_i2c_register_devices(struct i2c_adapter *adap) { }
#endif /* CONFIG_OF */
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index f7ec75b..ab5866f 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -565,6 +565,9 @@ extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
extern struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node);
extern const struct of_device_id
+*i2c_of_match_device(const struct of_device_id *matches, struct device *dev);
+
+extern const struct of_device_id
*i2c_of_match_device_strip_vendor(const struct of_device_id *matches,
struct device *dev);
#else
@@ -580,6 +583,12 @@ static inline struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node
}
const struct of_device_id
+*i2c_of_match_device(const struct of_device_id *matches, struct device *dev)
+{
+ return NULL;
+}
+
+const struct of_device_id
*i2c_of_match_device_strip_vendor(const struct of_device_id *matches,
struct device *dev)
{
--
1.8.3.2
--
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