From 1abd02e2dd7e0bd577000301fb2fd47780637387 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Fri, 2 Nov 2012 11:14:02 -0700 Subject: drm/i915: don't rewrite the GTT on resume v4 The BIOS shouldn't be touching this memory across suspend/resume, so just leave it alone. This saves us ~6ms on resume on my T420 (retested with write combined PTEs). v2: change gtt restore default on pre-gen4 (Chris) move needs_gtt_restore flag into dev_priv v3: make sure we restore GTT on resume from hibernate (Daniel) use opregion support as the cutoff for restore from resume (Chris) v4: use a better check for opregion (Chris) Reviewed-by: Chris Wilson Signed-off-by: Jesse Barnes [danvet: Kill the needs_gtt_restore indirection and check directly for OpRegion. Also explain in a comment what's going on.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_dma.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/gpu/drm/i915/i915_dma.c') diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 4f3c9337df9..ff06e3239ad 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1594,7 +1594,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) intel_setup_gmbus(dev); intel_opregion_setup(dev); - /* Make sure the bios did its job and set up vital registers */ intel_setup_bios(dev); i915_gem_load(dev); -- cgit v1.2.3-18-g5258