[Intel-gfx] [PATCH 19/42] drm/i915/xe2lpd: Don't try to program PLANE_AUX_DIST

[Srivatsa, Anusha]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Lucas De
> Marchi
> Sent: Wednesday, August 23, 2023 10:07 AM
> To: intel-xe at lists.freedesktop.org; intel-gfx at lists.freedesktop.org
> Cc: De Marchi, Lucas <lucas.demarchi at intel.com>; Roper, Matthew D
> <matthew.d.roper at intel.com>
> Subject: [Intel-gfx] [PATCH 19/42] drm/i915/xe2lpd: Don't try to program
> PLANE_AUX_DIST
> 
> From: Matt Roper <matthew.d.roper at intel.com>
> 
> Since Xe2LPD technically has FlatCCS, it doesn't have AuxCCS registers like
> PLANE_AUX_DIST.  However we currently have HAS_FLAT_CCS hardcoded to 0
> since compression isn't ready; we need to make sure this doesn't cause the
> display code to go back to trying to write this register.
> 
> Signed-off-by: Matt Roper <matthew.d.roper at intel.com>	
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

Reviewed-by: Anusha Srivatsa <anusha.srivatsa at intel.com>

> ---
>  drivers/gpu/drm/i915/display/skl_universal_plane.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c
> b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> index 3c212d8401c8..4dfd8b627147 100644
> --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
> +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> @@ -1254,7 +1254,7 @@ icl_plane_update_noarm(struct intel_plane *plane,
>  	}
> 
>  	/* FLAT CCS doesn't need to program AUX_DIST */
> -	if (!HAS_FLAT_CCS(dev_priv))
> +	if (!HAS_FLAT_CCS(dev_priv) && DISPLAY_VER(dev_priv) < 20)
>  		intel_de_write_fw(dev_priv, PLANE_AUX_DIST(pipe, plane_id),
>  				  skl_plane_aux_dist(plane_state, color_plane));
> 
> --
> 2.40.1