From: "Hsia-Jun(Randy) Li" <randy.li@xxxxxxxxxxxxx>
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mapping
is used is not a part of format.
Signed-off-by: Hsia-Jun(Randy) Li <randy.li@xxxxxxxxxxxxx>
---
include/uapi/drm/drm_fourcc.h | 75 +++++++++++++++++++++++++++++++++++
1 file changed, 75 insertions(+)
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index de703c6be969..ee13250f06f4 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -419,6 +419,7 @@ extern "C" {
#define DRM_FORMAT_MOD_VENDOR_ARM 0x08
#define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
#define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
+#define DRM_FORMAT_MOD_VENDOR_SYNAPTICS 0x0b
/* add more to the end as needed */
@@ -1519,6 +1520,80 @@ drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
#define AMD_FMT_MOD_CLEAR(field) \
(~((__u64)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT))
+/*
+ * Synaptics VideoSmart modifiers
+ *
+ * Tiles could be arranged in Groups of Tiles (GOTs), it is a small tile
+ * within a tile. GOT size and layout varies based on platform and
+ * performance concern. When the compression is applied, it is possible
+ * that we would have two tile type in the GOT, these parameters can't
+ * tell the secondary tile type.
+ *
+ * Besides, an 8 size 4 bytes arrary (32 bytes) would be need to store
+ * some compression parameters for a compression meta data plane.
+ *
+ * Macro
+ * Bits Param Description
+ * ---- ----- -----------------------------------------------------------------
+ *
+ * 7:0 f Scan direction description.
+ *
+ * 0 = Invalid
+ * 1 = V4, the scan would always start from vertical for 4 pixel
+ * then move back to the start pixel of the next horizontal
+ * direction.
+ * 2 = Reserved for future use.
+ *
+ * 15:8 m The times of pattern repeat in the right angle direction from
+ * the first scan direction.
+ *
+ * 19:16 p The padding bits after the whole scan, could be zero.
+ *
+ * 20:20 g GOT packing flag.
+ *
+ * 23:21 - Reserved for future use. Must be zero.
+ *
+ * 27:24 h log2(horizontal) of bytes, in GOTs.
+ *
+ * 31:28 v log2(vertical) of bytes, in GOTs.
+ *
+ * 35:32 - Reserved for future use. Must be zero.
+ *
+ * 36:36 c Compression flag.
+ *
+ * 55:37 - Reserved for future use. Must be zero.
+ *
+ */
+
+#define DRM_FORMAT_MOD_SYNA_V4_TILED fourcc_mod_code(SYNAPTICS, 1)
+
+#define DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(f, m, p, g, h, v, c) \
+ fourcc_mod_code(SYNAPTICS, ((__u64)((f) & 0xff) | \
+ ((__u64)((m) & 0xff) << 8) | \
+ ((__u64)((p) & 0xf) << 16) | \
+ ((__u64)((g) & 0x1) << 20) | \
+ ((__u64)((h) & 0xf) << 24) | \
+ ((__u64)((v) & 0xf) << 28) | \
+ ((__u64)((c) & 0x1) << 36)))
+
+#define DRM_FORMAT_MOD_SYNA_V4H1 \
+ DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(1, 1, 0, 0, 0, 0, 0)
+
+#define DRM_FORMAT_MOD_SYNA_V4H3P8 \
+ DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(1, 3, 8, 0, 0, 0, 0)
+
+#define DRM_FORMAT_MOD_SYNA_V4H1_64L4_COMPRESSED \
+ DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(1, 1, 0, 1, 6, 2, 1)
+
+#define DRM_FORMAT_MOD_SYNA_V4H3P8_64L4_COMPRESSED \
+ DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(1, 3, 8, 1, 6, 2, 1)
+
+#define DRM_FORMAT_MOD_SYNA_V4H1_128L128_COMPRESSED \
+ DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(1, 1, 0, 1, 7, 7, 1)
+
+#define DRM_FORMAT_MOD_SYNA_V4H3P8_128L128_COMPRESSED \
+ DRM_FORMAT_MOD_SYNA_MTR_LINEAR_2D(1, 3, 8, 1, 7, 7, 1)
+
#if defined(__cplusplus)
}
#endif
--
2.17.1
