diff options
Diffstat (limited to 'include/of.h')
| -rw-r--r-- | include/of.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/include/of.h b/include/of.h index e60fe89825..75cc3c11c1 100644 --- a/include/of.h +++ b/include/of.h @@ -641,9 +641,13 @@ static inline struct device_node *of_find_node_by_path_or_alias( #define for_each_node_by_name_from(dn, root, name) \ for (dn = of_find_node_by_name(root, name); dn; \ dn = of_find_node_by_name(dn, name)) -#define for_each_compatible_node(dn, type, compatible) \ - for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ +/* Iterate over compatible nodes starting from given root */ +#define for_each_compatible_node_from(dn, root, type, compatible) \ + for (dn = of_find_compatible_node(root, type, compatible); dn; \ dn = of_find_compatible_node(dn, type, compatible)) +/* Iterate over compatible nodes in default device tree */ +#define for_each_compatible_node(dn, type, compatible) \ + for_each_compatible_node_from(dn, NULL, type, compatible) static inline struct device_node *of_find_matching_node( struct device_node *from, const struct of_device_id *matches) @@ -732,6 +736,17 @@ static inline int of_property_read_u32(const struct device_node *np, s; \ s = of_prop_next_string(prop, s)) +/* + * struct device_node *n; + * + * of_property_for_each_phandle(np, root, "propname", n) + * printk("phandle points to: %s\n", n->full_name); + */ +#define of_property_for_each_phandle(np, root, propname, n) \ + for (int _i = 0; \ + (n = of_parse_phandle_from(np, root, propname, _i));\ + _i++) + static inline int of_property_write_u8(struct device_node *np, const char *propname, u8 value) { |