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author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-10-17 09:32:57 (GMT) |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-10-17 20:38:34 (GMT) |
commit | c630119f43471a8ece356b01dabf07f944f453b3 (patch) | |
tree | cc2f1eed02135e76d96bdbe0a4a76bc5675f1515 /drivers | |
parent | 905c27bb0de30dab178a54c06dc284177e24088a (diff) | |
download | linux-fsl-qoriq-c630119f43471a8ece356b01dabf07f944f453b3.tar.xz |
drm/i915: don't save/restore HWS_PGA reg for kms
We already do that as part of the ringbuffer re-setup at resume time.
Furthermore the register offset has moved on gen6+ around quite a bit,
and on ilk/gm45 we also need to restore the HWS reg for the bsd ring,
not just the render ring.
So again in kms mode this is only confusing a best, hence don't
bother.
v2: Fixup logic, noticed by Paulo Zanoni.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/i915/i915_suspend.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 6bd06b7..4f50d82 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -814,7 +814,8 @@ int i915_save_state(struct drm_device *dev) mutex_lock(&dev->struct_mutex); /* Hardware status page */ - dev_priv->saveHWS = I915_READ(HWS_PGA); + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + dev_priv->saveHWS = I915_READ(HWS_PGA); i915_save_display(dev); @@ -867,7 +868,8 @@ int i915_restore_state(struct drm_device *dev) mutex_lock(&dev->struct_mutex); /* Hardware status page */ - I915_WRITE(HWS_PGA, dev_priv->saveHWS); + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + I915_WRITE(HWS_PGA, dev_priv->saveHWS); i915_restore_display(dev); |