On Mon, Nov 25, 2019 at 04:26:29PM -0800, Radhakrishna Sripada wrote:
> From: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
>
> Gen-12 has a new compression format, add a new modifier to indicate that.
>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Cc: Nanley G Chery <nanley.g.chery@xxxxxxxxx>
> Cc: Jason Ekstrand <jason@xxxxxxxxxxxxxx>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
> ---
> 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 8caaaf7ff91b..5ba481f49931 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -410,6 +410,17 @@ extern "C" {
> #define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4)
> #define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5)
>
> +/*
> + * Intel color control surfaces (CCS) for Gen-12 render 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.
> + */
> +#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
> +
> /*
> * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
> *
> --
> 2.20.1
>
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