diff --git a/hwmon_ffdc.hpp b/hwmon_ffdc.hpp
new file mode 100644
index 0000000..58f5609
--- /dev/null
+++ b/hwmon_ffdc.hpp
@@ -0,0 +1,17 @@
+#pragma once
+#include <nlohmann/json.hpp>
+
+namespace phosphor::fan::monitor
+{
+
+/**
+ * @brief Collects hwmon data for event log FFDC
+ *
+ * Makes a list of the loaded hwmon driver names, and
+ * pulls interesting lines from dmesg.
+ *
+ * @return json - The FFDC data
+ */
+nlohmann::json collectHwmonFFDC();
+
+} // namespace phosphor::fan::monitor