diff options
Diffstat (limited to 'include/dm/ofnode.h')
| -rw-r--r-- | include/dm/ofnode.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index ced7f6ffb25..5b088650d3b 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -10,6 +10,7 @@ /* TODO(sjg@chromium.org): Drop fdtdec.h include */ #include <fdtdec.h> #include <dm/of.h> +#include <dm/of_access.h> #include <log.h> /* Enable checks to protect against invalid calls */ @@ -218,6 +219,18 @@ static inline ofnode ofnode_null(void) return node; } +static inline ofnode ofnode_root(void) +{ + ofnode node; + + if (of_live_active()) + node.np = gd_of_root(); + else + node.of_offset = 0; + + return node; +} + /** * ofnode_read_u32() - Read a 32-bit integer from a property * @@ -365,6 +378,49 @@ bool ofnode_read_bool(ofnode node, const char *propname); */ ofnode ofnode_find_subnode(ofnode node, const char *subnode_name); +#if CONFIG_IS_ENABLED(DM_INLINE_OFNODE) +static inline bool ofnode_is_enabled(ofnode node) +{ + if (ofnode_is_np(node)) { + return of_device_is_available(ofnode_to_np(node)); + } else { + return fdtdec_get_is_enabled(gd->fdt_blob, + ofnode_to_offset(node)); + } +} + +static inline ofnode ofnode_first_subnode(ofnode node) +{ + assert(ofnode_valid(node)); + if (ofnode_is_np(node)) + return np_to_ofnode(node.np->child); + + return offset_to_ofnode( + fdt_first_subnode(gd->fdt_blob, ofnode_to_offset(node))); +} + +static inline ofnode ofnode_next_subnode(ofnode node) +{ + assert(ofnode_valid(node)); + if (ofnode_is_np(node)) + return np_to_ofnode(node.np->sibling); + + return offset_to_ofnode( + fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node))); +} +#else +/** + * ofnode_is_enabled() - Checks whether a node is enabled. + * This looks for a 'status' property. If this exists, then returns true if + * the status is 'okay' and false otherwise. If there is no status property, + * it returns true on the assumption that anything mentioned should be enabled + * by default. + * + * @node: node to examine + * @return false (not enabled) or true (enabled) + */ +bool ofnode_is_enabled(ofnode node); + /** * ofnode_first_subnode() - find the first subnode of a parent node * @@ -382,6 +438,7 @@ ofnode ofnode_first_subnode(ofnode node); * has no more siblings) */ ofnode ofnode_next_subnode(ofnode node); +#endif /* DM_INLINE_OFNODE */ /** * ofnode_get_parent() - get the ofnode's parent (enclosing ofnode) |