diff --git a/include/video/w100fb.h b/include/video/w100fb.h
index e6da2d7..677d403 100644
--- a/include/video/w100fb.h
+++ b/include/video/w100fb.h
@@ -19,6 +19,7 @@
 
 unsigned long w100fb_gpio_read(int port);
 void w100fb_gpio_write(int port, unsigned long value);
+unsigned long w100fb_get_hsynclen(struct device *dev);
 
 /* LCD Specific Routines and Config */
 struct w100_tg_info {