diff --git a/include/faraday/ftpci100.h b/include/faraday/ftpci100.h
index b4a43f8..8801bd1 100644
--- a/include/faraday/ftpci100.h
+++ b/include/faraday/ftpci100.h
@@ -11,6 +11,7 @@
 #define __FTPCI100_H
 
 /* AHB Control Registers */
+#include <linux/bitops.h>
 struct ftpci100_ahbc {
 	unsigned int iosize;		/* 0x00 - I/O Space Size Signal */
 	unsigned int prot;		/* 0x04 - AHB Protection */
diff --git a/include/faraday/ftsdc010.h b/include/faraday/ftsdc010.h
index d3a359a..30726da 100644
--- a/include/faraday/ftsdc010.h
+++ b/include/faraday/ftsdc010.h
@@ -12,6 +12,7 @@
 #ifndef __ASSEMBLY__
 
 /* sd controller register */
+#include <linux/bitops.h>
 struct ftsdc010_mmc {
 	unsigned int	cmd;		/* 0x00 - command reg		*/
 	unsigned int	argu;		/* 0x04 - argument reg		*/
diff --git a/include/faraday/ftsdmc021.h b/include/faraday/ftsdmc021.h
index 3c979ce..e0e5eb3 100644
--- a/include/faraday/ftsdmc021.h
+++ b/include/faraday/ftsdmc021.h
@@ -14,6 +14,7 @@
 #define __FTSDMC021_H
 
 #ifndef __ASSEMBLY__
+#include <linux/bitops.h>
 struct ftsdmc021 {
 	unsigned int	tp1;		/* 0x00 - SDRAM Timing Parameter 1 */
 	unsigned int	tp2;		/* 0x04 - SDRAM Timing Parameter 2 */