From: Mika Kuoppala Date: Fri, 21 Feb 2014 15:32:00 +0000 (+0200) Subject: drm/i915: Do forcewake reset on gen8 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0a089e3355d77f758e46db54a0a81d4b58a28cc3;p=linux-beck.git drm/i915: Do forcewake reset on gen8 When we get control from BIOS there might be mt forcewake bits already set. This causes us to do double mt get without proper clear/ack sequence. Fix this by clearing mt forcewake register on init, like we do with older gens. Signed-off-by: Mika Kuoppala Reviewed-by: Ben Widawsky Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 04bd9717b021..de72415f2939 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -310,13 +310,13 @@ static void intel_uncore_forcewake_reset(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - if (IS_VALLEYVIEW(dev)) { + if (IS_VALLEYVIEW(dev)) vlv_force_wake_reset(dev_priv); - } else if (INTEL_INFO(dev)->gen >= 6) { + else if (IS_GEN6(dev) || IS_GEN7(dev)) __gen6_gt_force_wake_reset(dev_priv); - if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) - __gen6_gt_force_wake_mt_reset(dev_priv); - } + + if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev) || IS_GEN8(dev)) + __gen6_gt_force_wake_mt_reset(dev_priv); } void intel_uncore_early_sanitize(struct drm_device *dev)