Using fbc with VT-d flickers also on kbl and cfl.
Cc: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.9+
Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_fbc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 74d425c700ef..a149f08c1b79 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -1275,9 +1275,10 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv)
static bool need_fbc_vtd_wa(struct drm_i915_private *dev_priv)
{
- /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */
+ /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt,kbl,cfl */
if (intel_vtd_active() &&
- (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))) {
+ (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv) ||
+ IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv))) {
DRM_INFO("Disabling framebuffer compression (FBC) to prevent screen flicker with VT-d enabled\n");
return true;
}
--
2.17.1
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