diff options
author | Thomas Abraham <thomas.abraham@linaro.org> | 2011-06-30 11:56:10 -0400 |
---|---|---|
committer | Grant Likely <grant.likely@secretlab.ca> | 2011-06-30 15:02:10 -0400 |
commit | a3b853633d78c3930b513ee219df48637ac82eed (patch) | |
tree | 30d36c4b3e03db070f72eeaeed3f2d1dd1da159b /include/linux/of.h | |
parent | 7423734e19e7e0a90e3379152eacca2647f4377e (diff) |
dt: add helper functions to read u32 and string property values
Add helper functions to retrieve unsigned integer and string property
values from properties of a device node. These helper functions can be
used to lookup a property in a device node, perform error checking and
read the property value.
[grant.likely@secretlab.ca: Proposal and initial implementation]
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
[grant.likely: some word smithing and be more defensive validating the string]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/of.h')
-rw-r--r-- | include/linux/of.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index bfc0ed1b0ced..4fc4c1b8d5d5 100644 --- a/include/linux/of.h +++ b/include/linux/of.h | |||
@@ -195,6 +195,10 @@ extern struct device_node *of_find_node_with_property( | |||
195 | extern struct property *of_find_property(const struct device_node *np, | 195 | extern struct property *of_find_property(const struct device_node *np, |
196 | const char *name, | 196 | const char *name, |
197 | int *lenp); | 197 | int *lenp); |
198 | extern int of_property_read_u32(struct device_node *np, char *propname, | ||
199 | u32 *out_value); | ||
200 | extern int of_property_read_string(struct device_node *np, char *propname, | ||
201 | char **out_string); | ||
198 | extern int of_device_is_compatible(const struct device_node *device, | 202 | extern int of_device_is_compatible(const struct device_node *device, |
199 | const char *); | 203 | const char *); |
200 | extern int of_device_is_available(const struct device_node *device); | 204 | extern int of_device_is_available(const struct device_node *device); |