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author | Patrick Delaunay <patrick.delaunay@st.com> | 2020-01-13 11:34:56 +0100 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2020-04-16 23:06:54 -0400 |
commit | ce891fcada6638c39a0de28f821cfa2b9406440c (patch) | |
tree | e3b91f3dea700a91ae783c19711da482ee200b51 /drivers/core/ofnode.c | |
parent | 719cab6d2e2bf86f141a2c018b4e8e6c1507a5eb (diff) | |
download | u-boot-ce891fcada6638c39a0de28f821cfa2b9406440c.zip u-boot-ce891fcada6638c39a0de28f821cfa2b9406440c.tar.gz u-boot-ce891fcada6638c39a0de28f821cfa2b9406440c.tar.bz2 |
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/ofnode.c')
-rw-r--r-- | drivers/core/ofnode.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index b0be7cb..20871a6 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -571,6 +571,54 @@ const void *ofnode_get_property(ofnode node, const char *propname, int *lenp) propname, lenp); } +int ofnode_get_first_property(ofnode node, struct ofprop *prop) +{ + prop->node = node; + + if (ofnode_is_np(node)) { + prop->prop = of_get_first_property(ofnode_to_np(prop->node)); + if (!prop->prop) + return -FDT_ERR_NOTFOUND; + } else { + prop->offset = + fdt_first_property_offset(gd->fdt_blob, + ofnode_to_offset(prop->node)); + if (prop->offset < 0) + return prop->offset; + } + + return 0; +} + +int ofnode_get_next_property(struct ofprop *prop) +{ + if (ofnode_is_np(prop->node)) { + prop->prop = of_get_next_property(ofnode_to_np(prop->node), + prop->prop); + if (!prop->prop) + return -FDT_ERR_NOTFOUND; + } else { + prop->offset = fdt_next_property_offset(gd->fdt_blob, + prop->offset); + if (prop->offset < 0) + return prop->offset; + } + + return 0; +} + +const void *ofnode_get_property_by_prop(const struct ofprop *prop, + const char **propname, int *lenp) +{ + if (ofnode_is_np(prop->node)) + return of_get_property_by_prop(ofnode_to_np(prop->node), + prop->prop, propname, lenp); + else + return fdt_getprop_by_offset(gd->fdt_blob, + prop->offset, + propname, lenp); +} + bool ofnode_is_available(ofnode node) { if (ofnode_is_np(node)) |