[Intel-gfx] [PATCH v2 37/40] drm/framebuffer/tgl: Format modifier for Intel Gen-12 render compression

[Lisovskiy, Stanislav]

On Sat, 2019-08-17 at 02:38 -0700, Lucas De Marchi wrote:
> From: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> 
> Gen-12 has a new compression format, add a new modifier for userspace
> to
> indicate that.
> 
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter at intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> ---
>  include/uapi/drm/drm_fourcc.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/include/uapi/drm/drm_fourcc.h
> b/include/uapi/drm/drm_fourcc.h
> index 3feeaa3f987a..fb7270bf9670 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -410,6 +410,16 @@ 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 is at plane index 0 whereas CCS
> is linear and
> + * at index 1. A CCS cache line corresponds to an area of 4x1 tiles
> in the main
> + * surface. The main surface pitch is required to be a multiple of 4
> 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
>   *

Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>