[PATCH 4/9] i2c: Match using traditional OF methods, then by vendor-less compatible strings
From: Lee Jones <hidden>
Date: 2014-06-20 12:03:40
Also in:
linux-arm-kernel, linux-i2c, lkml
Subsystem:
i2c subsystem, the rest · Maintainers:
Andi Shyti, Linus Torvalds
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. Acked-by: Grant Likely <redacted> Signed-off-by: Lee Jones <redacted> --- drivers/i2c/i2c-core.c | 16 ++++++++++++++++ include/linux/i2c.h | 12 ++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 8a37745..a9c97c4 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c@@ -1111,6 +1111,22 @@ i2c_of_match_device_strip_vendor(const struct of_device_id *matches, return NULL; } +const struct of_device_id +*i2c_of_match_device(const struct of_device_id *matches, + struct i2c_client *client) +{ + const struct of_device_id *match; + + if (!(client && matches)) + return NULL; + + match = of_match_device(matches, &client->dev); + if (match) + return match; + + return i2c_of_match_device_strip_vendor(matches, client); +} +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 b556e0a..3d0350c 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h@@ -564,6 +564,10 @@ 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); +extern const struct of_device_id +*i2c_of_match_device(const struct of_device_id *matches, + struct i2c_client *client); + #else static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
@@ -575,6 +579,14 @@ static inline struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node { return NULL; } + +const struct of_device_id +*i2c_of_match_device(const struct of_device_id *matches, + struct i2c_client *client) +{ + return NULL; +} + #endif /* CONFIG_OF */ #endif /* _LINUX_I2C_H */
--
1.8.3.2