diff options
author | Simon Glass <sjg@chromium.org> | 2022-09-06 20:27:16 -0600 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2022-09-29 16:11:15 -0400 |
commit | 52ad21aa2cc55f53da19436f457a8590abf0d125 (patch) | |
tree | 30846bc4e1f2d41259d9e9e39b238ba93bd19e9b /include/dm | |
parent | f46ec93ed593e7a442629a2a56fd541debc41329 (diff) |
dm: core: Add a macro to iterate through properties
Add a 'for_each' macro like we have for nodes.
Fix the comment for struct ofprop while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm')
-rw-r--r-- | include/dm/ofnode.h | 38 | ||||
-rw-r--r-- | include/dm/ofnode_decl.h | 2 |
2 files changed, 39 insertions, 1 deletions
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index 1e23a40c99..7b0ef109b7 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -177,6 +177,20 @@ static inline ofnode ofnode_root(void) } /** + * ofprop_valid() - check if an ofprop is valid + * + * @prop: Pointer to ofprop to check + * Return: true if the reference contains a valid ofprop, false if not + */ +static inline bool ofprop_valid(struct ofprop *prop) +{ + if (of_live_active()) + return prop->prop; + else + return prop->offset >= 0; +} + +/** * oftree_default() - Returns the default device tree (U-Boot's control FDT) * * Returns: reference to the control FDT @@ -822,6 +836,30 @@ int ofnode_first_property(ofnode node, struct ofprop *prop); int ofnode_next_property(struct ofprop *prop); /** + * ofnode_for_each_prop() - iterate over all properties of a node + * + * @prop: struct ofprop + * @node: node (lvalue, ofnode) + * + * This is a wrapper around a for loop and is used like this:: + * + * ofnode node; + * struct ofprop prop; + * + * ofnode_for_each_prop(prop, node) { + * ...use prop... + * } + * + * Note that this is implemented as a macro and @prop is used as + * iterator in the loop. The parent variable can be a constant or even a + * literal. + */ +#define ofnode_for_each_prop(prop, node) \ + for (ofnode_first_property(node, &prop); \ + ofprop_valid(&prop); \ + ofnode_next_property(&prop)) + +/** * ofprop_get_property() - get a pointer to the value of a property * * Get value for the property identified by the provided reference. diff --git a/include/dm/ofnode_decl.h b/include/dm/ofnode_decl.h index 8d0d7885aa..f666a0287b 100644 --- a/include/dm/ofnode_decl.h +++ b/include/dm/ofnode_decl.h @@ -57,7 +57,7 @@ typedef union ofnode_union { * * @node: Pointer to device node * @offset: Pointer into flat device tree, used for flat tree. - * @prop: Pointer to property, used for live treee. + * @prop: Pointer to property, used for live tree. */ struct ofprop { |