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* [PATCH 1/2] drm/i915: Introduce new Tile 4 format
@ 2021-12-09 10:47 Stanislav Lisovskiy
  2021-12-09 10:47 ` [PATCH 2/2] drm/i915/dg2: Tile 4 plane format support Stanislav Lisovskiy
  2021-12-09 15:14 ` [PATCH 1/2] drm/i915: Introduce new Tile 4 format Chery, Nanley G
  0 siblings, 2 replies; 5+ messages in thread
From: Stanislav Lisovskiy @ 2021-12-09 10:47 UTC (permalink / raw)
  To: intel-gfx; +Cc: nanley.g.chery, dri-devel, Stanislav.Lisovskiy, jani.saarinen

This tiling layout uses 4KB tiles in a row-major layout. It has the same
shape as Tile Y at two granularities: 4KB (128B x 32) and 64B (16B x 4). It
only differs from Tile Y at the 256B granularity in between. At this
granularity, Tile Y has a shape of 16B x 32 rows, but this tiling has a shape
of 64B x 8 rows.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
---
 include/uapi/drm/drm_fourcc.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 7f652c96845b..a146c6df1066 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -565,6 +565,17 @@ extern "C" {
  */
 #define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC fourcc_mod_code(INTEL, 8)
 
+/*
+ * Intel Tile 4 layout
+ *
+ * This is a tiled layout using 4KB tiles in a row-major layout. It has the same
+ * shape as Tile Y at two granularities: 4KB (128B x 32) and 64B (16B x 4). It
+ * only differs from Tile Y at the 256B granularity in between. At this
+ * granularity, Tile Y has a shape of 16B x 32 rows, but this tiling has a shape
+ * of 64B x 8 rows.
+ */
+#define I915_FORMAT_MOD_4_TILED         fourcc_mod_code(INTEL, 9)
+
 /*
  * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
  *
-- 
2.24.1.485.gad05a3d8e5


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2021-12-09 10:47 [PATCH 1/2] drm/i915: Introduce new Tile 4 format Stanislav Lisovskiy
2021-12-09 10:47 ` [PATCH 2/2] drm/i915/dg2: Tile 4 plane format support Stanislav Lisovskiy
2021-12-09 15:14   ` Chery, Nanley G
2021-12-09 15:14 ` [PATCH 1/2] drm/i915: Introduce new Tile 4 format Chery, Nanley G
2021-12-10 10:09   ` Imre Deak

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