[PATCH 1/2] drm/i915/display: Add macro for checking 3 DSC engines

[Kandpal, Suraj]

> -----Original Message-----
> From: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>
> Sent: Monday, April 14, 2025 2:27 PM
> To: intel-gfx at lists.freedesktop.org; intel-xe at lists.freedesktop.org
> Cc: Kandpal, Suraj <suraj.kandpal at intel.com>; stable at vger.kernel.org;
> Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>
> Subject: [PATCH 1/2] drm/i915/display: Add macro for checking 3 DSC engines
> 
> 3 DSC engines per pipe is currently supported only for BMG.
> Add a macro to check whether a platform supports 3 DSC engines per pipe.
> 
> v2:Fix Typo in macro argument. (Suraj).
> Added fixes tag.
> 
> Bspec: 50175
> Fixes: be7f5fcdf4a0 ("drm/i915/dp: Enable 3 DSC engines for 12 slices")
> Cc: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
> Cc: Suraj Kandpal <suraj.kandpal at intel.com>
> Cc: <stable at vger.kernel.org> # v6.14+
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>

LGTM,
Reviewed-by: Suraj Kandpal <suraj.kandpal at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_display_device.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_device.h
> b/drivers/gpu/drm/i915/display/intel_display_device.h
> index 368b0d3417c2..87c666792c0d 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_device.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_device.h
> @@ -163,6 +163,7 @@ struct intel_display_platforms {
>  #define HAS_DP_MST(__display)		(DISPLAY_INFO(__display)-
> >has_dp_mst)
>  #define HAS_DSB(__display)		(DISPLAY_INFO(__display)->has_dsb)
>  #define HAS_DSC(__display)		(DISPLAY_RUNTIME_INFO(__display)-
> >has_dsc)
> +#define HAS_DSC_3ENGINES(__display)	(DISPLAY_VERx100(__display)
> == 1401 && HAS_DSC(__display))
>  #define HAS_DSC_MST(__display)		(DISPLAY_VER(__display) >=
> 12 && HAS_DSC(__display))
>  #define HAS_FBC(__display)		(DISPLAY_RUNTIME_INFO(__display)-
> >fbc_mask != 0)
>  #define HAS_FBC_DIRTY_RECT(__display)	(DISPLAY_VER(__display) >=
> 30)
> --
> 2.34.1