diff options
author | Viresh Kumar <viresh.kumar@linaro.org> | 2012-11-20 10:15:19 +0530 |
---|---|---|
committer | Rob Herring <rob.herring@calxeda.com> | 2012-11-20 22:58:55 -0600 |
commit | be193249b4178158c0f697cb452b2bbf0cb16361 (patch) | |
tree | 4278eba967e625f0cdb6de865a83038243c51e80 /include/linux/of.h | |
parent | 9846210b1ec9bbaa30022d6d8af7e55ef67ccb45 (diff) | |
download | linux-stable-be193249b4178158c0f697cb452b2bbf0cb16361.tar.gz linux-stable-be193249b4178158c0f697cb452b2bbf0cb16361.tar.bz2 linux-stable-be193249b4178158c0f697cb452b2bbf0cb16361.zip |
dt: add helper function to read u8 & u16 variables & arrays
This adds following helper routines:
- of_property_read_u8_array()
- of_property_read_u16_array()
- of_property_read_u8()
- of_property_read_u16()
This expects arrays from DT to be passed as:
- u8 array:
property = /bits/ 8 <0x50 0x60 0x70>;
- u16 array:
property = /bits/ 16 <0x5000 0x6000 0x7000>;
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'include/linux/of.h')
-rw-r--r-- | include/linux/of.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index 857dde984a6e..ab1af0e14659 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -223,6 +223,10 @@ extern struct device_node *of_find_node_with_property( extern struct property *of_find_property(const struct device_node *np, const char *name, int *lenp); +extern int of_property_read_u8_array(const struct device_node *np, + const char *propname, u8 *out_values, size_t sz); +extern int of_property_read_u16_array(const struct device_node *np, + const char *propname, u16 *out_values, size_t sz); extern int of_property_read_u32_array(const struct device_node *np, const char *propname, u32 *out_values, @@ -364,6 +368,18 @@ static inline struct device_node *of_find_compatible_node( return NULL; } +static inline int of_property_read_u8_array(const struct device_node *np, + const char *propname, u8 *out_values, size_t sz) +{ + return -ENOSYS; +} + +static inline int of_property_read_u16_array(const struct device_node *np, + const char *propname, u16 *out_values, size_t sz) +{ + return -ENOSYS; +} + static inline int of_property_read_u32_array(const struct device_node *np, const char *propname, u32 *out_values, size_t sz) @@ -470,6 +486,20 @@ static inline bool of_property_read_bool(const struct device_node *np, return prop ? true : false; } +static inline int of_property_read_u8(const struct device_node *np, + const char *propname, + u8 *out_value) +{ + return of_property_read_u8_array(np, propname, out_value, 1); +} + +static inline int of_property_read_u16(const struct device_node *np, + const char *propname, + u16 *out_value) +{ + return of_property_read_u16_array(np, propname, out_value, 1); +} + static inline int of_property_read_u32(const struct device_node *np, const char *propname, u32 *out_value) |