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author | Patrick Delaunay <patrick.delaunay@st.com> | 2020-01-13 13:34:56 +0300 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2020-04-17 06:06:54 +0300 |
commit | ce891fcada6638c39a0de28f821cfa2b9406440c (patch) | |
tree | e3b91f3dea700a91ae783c19711da482ee200b51 /drivers/core/of_access.c | |
parent | 719cab6d2e2bf86f141a2c018b4e8e6c1507a5eb (diff) | |
download | u-boot-ce891fcada6638c39a0de28f821cfa2b9406440c.tar.xz |
dm: core: add ofnode and dev function to iterate on node property
Add functions to iterate on all property with livetree
- dev_read_first_prop
- dev_read_next_prop
- dev_read_prop_by_prop
and
- ofnode_get_first_property
- ofnode_get_next_property
- ofnode_get_property_by_prop
And helper: dev_for_each_property
For example:
struct ofprop property;
dev_for_each_property(property, config) {
value = dev_read_prop_by_prop(&property, &propname, &len);
or:
for (res = ofnode_get_first_property(node, &property);
!res;
res = ofnode_get_next_property(&property))
{
value = ofnode_get_property_by_prop(&property, &propname, &len);
....
}
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/core/of_access.c')
-rw-r--r-- | drivers/core/of_access.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/core/of_access.c b/drivers/core/of_access.c index c54baa140a..ea3ee8bd63 100644 --- a/drivers/core/of_access.c +++ b/drivers/core/of_access.c @@ -171,6 +171,38 @@ const void *of_get_property(const struct device_node *np, const char *name, return pp ? pp->value : NULL; } +const struct property *of_get_first_property(const struct device_node *np) +{ + if (!np) + return NULL; + + return np->properties; +} + +const struct property *of_get_next_property(const struct device_node *np, + const struct property *property) +{ + if (!np) + return NULL; + + return property->next; +} + +const void *of_get_property_by_prop(const struct device_node *np, + const struct property *property, + const char **name, + int *lenp) +{ + if (!np || !property) + return NULL; + if (name) + *name = property->name; + if (lenp) + *lenp = property->length; + + return property->value; +} + static const char *of_prop_next_string(struct property *prop, const char *cur) { const void *curv = cur; |