diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-11-02 11:14:02 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-11-11 23:51:42 +0100 |
| commit | 1abd02e2dd7e0bd577000301fb2fd47780637387 (patch) | |
| tree | 9f0029d3410fe4b6c96253ce467e6071ad0db7c6 /drivers/gpu/drm/i915/i915_dma.c | |
| parent | 4fc688ce79772496503d22263d61b071a8fb596e (diff) | |
| download | linux-1abd02e2dd7e0bd577000301fb2fd47780637387.tar.gz linux-1abd02e2dd7e0bd577000301fb2fd47780637387.tar.bz2 linux-1abd02e2dd7e0bd577000301fb2fd47780637387.zip | |
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 <chris@chris-wilson.co.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[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 <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 4f3c9337df90..ff06e3239ada 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); |