diff --git a/smbus.hpp b/smbus.hpp
new file mode 100644
index 0000000..73e3e7e
--- /dev/null
+++ b/smbus.hpp
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+namespace phosphor
+{
+namespace smbus
+{
+
+class Smbus
+{
+  public:
+    Smbus(){};
+
+    int open_i2c_dev(int i2cbus, char* filename, size_t size, int quiet);
+
+    int smbusInit(int smbus_num);
+
+    int set_slave_addr(int file, int address, int force);
+
+    int SetSmbusCmdByte(int smbus_num, int8_t device_addr, int8_t smbuscmd,
+                        int8_t data);
+
+    int GetSmbusCmdByte(int smbus_num, int8_t device_addr, int8_t smbuscmd);
+
+    void smbusClose(int smbus_num);
+};
+
+} // namespace smbus
+} // namespace phosphor