diff --git a/libc/kernel/common/linux/tegrafb.h b/libc/kernel/common/linux/tegrafb.h
index 27bb286..e01e4d6 100644
--- a/libc/kernel/common/linux/tegrafb.h
+++ b/libc/kernel/common/linux/tegrafb.h
@@ -12,6 +12,7 @@
 #ifndef _LINUX_TEGRAFB_H_
 #define _LINUX_TEGRAFB_H_
 
+#include <linux/fb.h>
 #include <linux/types.h>
 #include <asm/ioctl.h>
 
@@ -70,8 +71,14 @@
  __u32 post_syncpt_val;
 };
 
+struct tegra_fb_modedb {
+ struct fb_var_screeninfo *modedb;
+ __u32 modedb_len;
+};
+
 #define FBIO_TEGRA_SET_NVMAP_FD _IOW('F', 0x40, __u32)
 #define FBIO_TEGRA_FLIP _IOW('F', 0x41, struct tegra_fb_flip_args)
+#define FBIO_TEGRA_GET_MODEDB _IOWR('F', 0x42, struct tegra_fb_modedb)
 
 #endif