Merge tag 'drm-intel-next-2021-01-04' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

- Display hotplug fix for gen2/gen3 (Chris)
- Remove trailing semicolon (Tom)
- Suppress display warnings for old ifwi presend on our CI (Chris)
- OA/Perf related workaround (Lionel)
- Replace I915_READ/WRITE per new uncore and display read/write functions (Jani)
- PSR improvements (Jose)
- HDR and other color changes on LSPCON (Uma, Ville)
- FBC fixes for TGL (Uma)
- Record plane update times for debugging (Chris)
- Refactor panel backlight control functions (Dave)
- Display power improvements (Imre)
- Add VRR register definition (Manasi)
- Atomic modeset improvements for bigjoiner pipes (Ville)
- Switch off the scanout during driver unregister (Chris)
- Clean-up DP's FEW enable (Manasi)
- Fix VDSCP slice count (Manasi)
- Fix and clean up around rc_model_size for DSC (Jani)
- Remove Type-C noisy debug warn message (Sean)
- Display HPD code clean-up (Ville)
- Refactor Intel Display (Dave)
- Start adding support for Intel's eDP backlight controls (Lyude)

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210104211018.GA1094707@intel.com

1 files changed, 12 insertions, 7 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index a5b072816a7b..33200b5cfad0 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -742,6 +742,8 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
 		cache->fence_id = plane_state->vma->fence->id;
 	else
 		cache->fence_id = -1;
+
+	cache->psr2_active = crtc_state->has_psr2;
 }
 
 static bool intel_fbc_cfb_size_changed(struct drm_i915_private *dev_priv)
@@ -914,6 +916,16 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc)
 		return false;
 	}
 
+	/*
+	 * Tigerlake is not supporting FBC with PSR2.
+	 * Recommendation is to keep this combination disabled
+	 * Bspec: 50422 HSD: 14010260002
+	 */
+	if (fbc->state_cache.psr2_active && IS_TIGERLAKE(dev_priv)) {
+		fbc->no_fbc_reason = "not supported with PSR2";
+		return false;
+	}
+
 	return true;
 }
 
@@ -1433,13 +1445,6 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv)
 	if (!HAS_FBC(dev_priv))
 		return 0;
 
-	/*
-	 * Fbc is causing random underruns in CI execution on TGL platforms.
-	 * Disabling the same while the problem is being debugged and analyzed.
-	 */
-	if (IS_TIGERLAKE(dev_priv))
-		return 0;
-
 	if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9)
 		return 1;