Re: [PATCH] drm/i915/display: Disable AuxCCS framebuffers if built for Xe

["Souza, Jose" <jose.souza@intel.com>]

On Wed, 2024-02-28 at 16:02 +0200, Juha-Pekka Heikkila wrote:
> AuxCCS framebuffers don't work on Xe driver hence disable them
> from plane capabilities until they are fixed. FlatCCS framebuffers
> work and they are left enabled. CCS is left untouched for i915
> driver.
> 

Fixes: 44e694958b95 ("drm/xe/display: Implement display support")

> Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/933
> Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
> ---
>  drivers/gpu/drm/i915/display/skl_universal_plane.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> index e941e2e4fd14..860574d04f88 100644
> --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
> +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> @@ -2295,6 +2295,9 @@ static u8 skl_get_plane_caps(struct drm_i915_private *i915,
>  	if (HAS_4TILE(i915))
>  		caps |= INTEL_PLANE_CAP_TILING_4;
>  
> +	if (!IS_ENABLED(I915) && !HAS_FLAT_CCS(i915))
> +		return caps;
> +
>  	if (skl_plane_has_rc_ccs(i915, pipe, plane_id)) {
>  		caps |= INTEL_PLANE_CAP_CCS_RC;
>  		if (DISPLAY_VER(i915) >= 12)