v4.19.13 snapshot.
diff --git a/include/linux/timeriomem-rng.h b/include/linux/timeriomem-rng.h
new file mode 100644
index 0000000..3e00122
--- /dev/null
+++ b/include/linux/timeriomem-rng.h
@@ -0,0 +1,19 @@
+/*
+ * linux/include/linux/timeriomem-rng.h
+ *
+ * Copyright (c) 2009 Alexander Clouter <alex@digriz.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+struct timeriomem_rng_data {
+ void __iomem *address;
+
+ /* measures in usecs */
+ unsigned int period;
+
+ /* bits of entropy per 1024 bits read */
+ unsigned int quality;
+};