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dt: add helper function to read u32 arrays

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Rework of_property_read_u32 to read an array of values. Then
of_property_read_u32 becomes an inline with array size of 1.

Also make struct device_node ptr const.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Rob Herring
2011-07-06 15:42:58 -05:00
committed by Grant Likely
parent b84e773119
commit 0e373639ad
2 changed files with 25 additions and 8 deletions
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14
include/linux/of.h
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@@ -195,8 +195,18 @@ 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_u32(struct device_node *np, char *propname,
u32 *out_value);
extern int of_property_read_u32_array(const struct device_node *np,
char *propname,
u32 *out_values,
size_t sz);
static inline int of_property_read_u32(const struct device_node *np,
char *propname,
u32 *out_value)
{
return of_property_read_u32_array(np, propname, out_value, 1);
}
extern int of_property_read_string(struct device_node *np, char *propname,
const char **out_string);
extern int of_device_is_compatible(const struct device_node *device,