This patch adds api to find compatible id for a given FDT node
Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com --- include/fdtdec.h | 14 ++++++++++++++ lib/fdtdec.c | 12 ++++++++++++ 2 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/include/fdtdec.h b/include/fdtdec.h index f9aac31..d501d7e 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -389,4 +389,18 @@ int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, */ const u8 *fdtdec_locate_byte_array(const void *blob, int node, const char *prop_name, int count); + +/** + * Find the compatible ID for a given node. + * + * Generally each node has at least one compatible string attached to it. + * This function looks through our list of known compatible strings and + * returns the corresponding ID which matches the compatible string. + * + * @param blob FDT blob to use + * @param node Node containing compatible string to find + * @return compatible ID, or COMPAT_UNKNOWN if we cannot find a match + */ +enum fdt_compat_id fdtdec_lookup(const void *blob, int node); + #endif diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 6e8c24c..dbfca1a 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -516,3 +516,15 @@ const u8 *fdtdec_locate_byte_array(const void *blob, int node, return NULL; return cell; } + +enum fdt_compat_id fdtdec_lookup(const void *blob, int node) +{ + enum fdt_compat_id id; + + /* Search our drivers */ + for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) + if (0 == fdt_node_check_compatible(blob, node, + compat_names[id])) + return id; + return COMPAT_UNKNOWN; +}