lib: utils: Add FDT match table based node lookup

This patch adds FDT match table based node lookup funcitons.

These functions will be useful in implementing simple FDT
based driver frameworks.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h
index 57c4720..a525493 100644
--- a/include/sbi_utils/fdt/fdt_helper.h
+++ b/include/sbi_utils/fdt/fdt_helper.h
@@ -10,6 +10,11 @@
 #ifndef __FDT_HELPER_H__
 #define __FDT_HELPER_H__
 
+struct fdt_match {
+	const char *compatible;
+	void *data;
+};
+
 struct platform_uart_data {
 	unsigned long addr;
 	unsigned long freq;
@@ -23,6 +28,12 @@ struct platform_plic_data {
 	unsigned long num_src;
 };
 
+const struct fdt_match *fdt_match_node(void *fdt, int nodeoff,
+				       const struct fdt_match *match_table);
+
+int fdt_find_match(void *fdt, const struct fdt_match *match_table,
+		   const struct fdt_match **out_match);
+
 int fdt_parse_uart8250_node(void *fdt, int nodeoffset,
 			    struct platform_uart_data *uart);