Merge tag 'drm-intel-next-2015-02-27' of git://anongit.freedesktop.org/drm-intel...

[karo-tx-linux.git] / include / uapi / drm / drm_fourcc.h

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 1a5a357d658fb2fc679661860b31b23d520dee8f..e6efac23c7ea350ba868c04b358306d01976c8c3 100644 (file)
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -192,4 +192,19 @@
  */
 #define I915_FORMAT_MOD_Y_TILED        fourcc_mod_code(INTEL, 2)
 
+/*
+ * Intel Yf-tiling layout
+ *
+ * This is a tiled layout using 4Kb tiles in row-major layout.
+ * Within the tile pixels are laid out in 16 256 byte units / sub-tiles which
+ * are arranged in four groups (two wide, two high) with column-major layout.
+ * Each group therefore consits out of four 256 byte units, which are also laid
+ * out as 2x2 column-major.
+ * 256 byte units are made out of four 64 byte blocks of pixels, producing
+ * either a square block or a 2:1 unit.
+ * 64 byte blocks of pixels contain four pixel rows of 16 bytes, where the width
+ * in pixel depends on the pixel depth.
+ */
+#define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
+
 #endif /* DRM_FOURCC_H */