hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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 <mika.kuoppala@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Mika Kuoppala 2014-02-21 17:32:00 +02:00 committed by Daniel Vetter
parent c923facd53
commit 0a089e3355
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/i915/intel_uncore.c
View File

@ -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)