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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-02-07 12:12:51 +0800 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-15 23:27:31 +0800 |
| commit | fa4d34ccd0914ac87336ea2c17e9370dfecef286 (patch) | |
| tree | a5929b60f6b8a52d60a91d0cf2a7e38079d57c44 | |
| parent | 98619dcb77d9dcbed67e39a71e4357fc99dc0f25 (diff) | |
| download | talos-obmc-linux-fa4d34ccd0914ac87336ea2c17e9370dfecef286.tar.gz talos-obmc-linux-fa4d34ccd0914ac87336ea2c17e9370dfecef286.zip | |
of: introduce helper to manage boolean
of_property_read_bool
Search for a property in a device node.
Returns true if the property exist false otherwise.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
| -rw-r--r-- | include/linux/of.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index a75a831e2057..50059cf63135 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -342,6 +342,22 @@ static inline int of_machine_is_compatible(const char *compat) #define of_match_node(_matches, _node) NULL #endif /* CONFIG_OF */ +/** + * of_property_read_bool - Findfrom a property + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * + * Search for a property in a device node. + * Returns true if the property exist false otherwise. + */ +static inline bool of_property_read_bool(const struct device_node *np, + const char *propname) +{ + struct property *prop = of_find_property(np, propname, NULL); + + return prop ? true : false; +} + static inline int of_property_read_u32(const struct device_node *np, const char *propname, u32 *out_value) |
