diff --git a/libc/kernel/common/linux/tegrafb.h b/libc/kernel/common/linux/tegrafb.h
index 2985d61..27bb286 100644
--- a/libc/kernel/common/linux/tegrafb.h
+++ b/libc/kernel/common/linux/tegrafb.h
@@ -15,10 +15,57 @@
 #include <linux/types.h>
 #include <asm/ioctl.h>
 
-struct tegra_fb_flip_args {
+#define TEGRA_FB_WIN_FMT_P1 0
+#define TEGRA_FB_WIN_FMT_P2 1
+#define TEGRA_FB_WIN_FMT_P4 2
+#define TEGRA_FB_WIN_FMT_P8 3
+#define TEGRA_FB_WIN_FMT_B4G4R4A4 4
+#define TEGRA_FB_WIN_FMT_B5G5R5A 5
+#define TEGRA_FB_WIN_FMT_B5G6R5 6
+#define TEGRA_FB_WIN_FMT_AB5G5R5 7
+#define TEGRA_FB_WIN_FMT_B8G8R8A8 12
+#define TEGRA_FB_WIN_FMT_R8G8B8A8 13
+#define TEGRA_FB_WIN_FMT_B6x2G6x2R6x2A8 14
+#define TEGRA_FB_WIN_FMT_R6x2G6x2B6x2A8 15
+#define TEGRA_FB_WIN_FMT_YCbCr422 16
+#define TEGRA_FB_WIN_FMT_YUV422 17
+#define TEGRA_FB_WIN_FMT_YCbCr420P 18
+#define TEGRA_FB_WIN_FMT_YUV420P 19
+#define TEGRA_FB_WIN_FMT_YCbCr422P 20
+#define TEGRA_FB_WIN_FMT_YUV422P 21
+#define TEGRA_FB_WIN_FMT_YCbCr422R 22
+#define TEGRA_FB_WIN_FMT_YUV422R 23
+#define TEGRA_FB_WIN_FMT_YCbCr422RA 24
+#define TEGRA_FB_WIN_FMT_YUV422RA 25
+
+#define TEGRA_FB_WIN_BLEND_NONE 0
+#define TEGRA_FB_WIN_BLEND_PREMULT 1
+#define TEGRA_FB_WIN_BLEND_COVERAGE 2
+
+struct tegra_fb_windowattr {
+ __s32 index;
  __u32 buff_id;
+ __u32 blend;
+ __u32 offset;
+ __u32 stride;
+ __u32 pixformat;
+ __u32 x;
+ __u32 y;
+ __u32 w;
+ __u32 h;
+ __u32 out_x;
+ __u32 out_y;
+ __u32 out_w;
+ __u32 out_h;
+ __u32 z;
  __u32 pre_syncpt_id;
  __u32 pre_syncpt_val;
+};
+
+#define TEGRA_FB_FLIP_N_WINDOWS 3
+
+struct tegra_fb_flip_args {
+ struct tegra_fb_windowattr win[TEGRA_FB_FLIP_N_WINDOWS];
  __u32 post_syncpt_id;
  __u32 post_syncpt_val;
 };