edid: Add an edid_check_checksum() helper function
Add a helper function to check the checksum of an EDID data block.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
diff --git a/include/edid.h b/include/edid.h
index d3cc523..a69f43a 100644
--- a/include/edid.h
+++ b/include/edid.h
@@ -246,6 +246,15 @@
int edid_check_info(struct edid1_info *info);
/**
+ * Check checksum of a 128 bytes EDID data block
+ *
+ * @param edid_block EDID block data
+ *
+ * @return 0 on success, or a negative errno on error
+ */
+int edid_check_checksum(u8 *edid_block);
+
+/**
* Get the horizontal and vertical rate ranges of the monitor.
*
* @param edid The EDID info