Commit 0d3d29d0 authored Oct 28, 2019 by Dhinakaran Pandiyan Committed by Imre Deak Jan 07, 2020

drm/framebuffer: Format modifier for Intel Gen-12 media compression



Gen-12 display can decompress surfaces compressed by the media engine, add
a new modifier as the driver needs to know the surface was compressed by
the media or render engine.

v2: Update code comment describing the color plane order for YUV
    semiplanar formats.

Cc: Nanley G Chery <nanley.g.chery@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191231233756.18753-6-imre.deak@intel.com

parent 577687bf

include/uapi/drm/drm_fourcc.h

+13 −0

Original line number	Diff line number	Diff line
		@@ -421,6 +421,19 @@ extern "C" {
		*/
		#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)

		/*
		* Intel color control surfaces (CCS) for Gen-12 media compression
		*
		* The main surface is Y-tiled and at plane index 0, the CCS is linear and
		* at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
		* main surface. In other words, 4 bits in CCS map to a main surface cache
		* line pair. The main surface pitch is required to be a multiple of four
		* Y-tile widths. For semi-planar formats like NV12, CCS planes follow the
		* Y and UV planes i.e., planes 0 and 1 are used for Y and UV surfaces,
		* planes 2 and 3 for the respective CCS.
		*/
		#define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)

		/*
		* Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
		*

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