From fd7d6c5c8f3e46bf168c8560c842285c13ab7dd7 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 23 Dec 2016 10:23:58 -0200 Subject: [PATCH] drm/i915: enable FBC on gen9+ too Gen9+ platforms have been seeing a lot of screen flickerings and underruns, so I never felt comfortable in enabling FBC on these platforms since I didn't want to throw yet another feature on top of the already complex problem. We now have code that automatically disables FBC if we ever get an underrun, and the screen flickerings seem to be mostly gone, so it may be a good time to try to finally enable FBC by default on the newer platforms. Besides, BDW FBC has been working fine over the year, which gives me a little more confidence now. For a little more information, please refer to commit a98ee79317b4 ("drm/i915/fbc: enable FBC by default on HSW and BDW"). v2: Enable not only on SKL, but for everything new (Daniel). v3: Rebase after the intel_sanitize_fbc_option() change. v4: New rebase after 8 months, drop expired R-B tags. Signed-off-by: Paulo Zanoni Reviewed-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1482495839-27041-1-git-send-email-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/intel_fbc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index 9aec63bc30ff..26a81a9e9c1d 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -1317,7 +1317,7 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv) if (!HAS_FBC(dev_priv)) return 0; - if (IS_BROADWELL(dev_priv)) + if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9) return 1; return 0; -- 2.20.1