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drm/i915: factor out reset_vblank_counter 

We need to do the same for other platforms in upcoming patches.

v2:
- s/p/pipe (Ville)
- Call the new helper with the vbl_lock already held. The part it
  protects is short, so releasing it between pipes only makes proving
  correctness more difficult.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Resolve conflict with Damien's s/p/pipe/ change.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Imre Deak 2014-03-04 19:23:03 +02:00 committed by Daniel Vetter
parent a30180a5a3
commit dd7c0b66e5
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/i915/intel_pm.c
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@ -5310,6 +5310,13 @@ static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv)
}
}
static void reset_vblank_counter(struct drm_device *dev, enum pipe pipe)
{
assert_spin_locked(&dev->vbl_lock);
dev->vblank[pipe].last = 0;
}
static void hsw_power_well_post_disable(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
@ -5326,7 +5333,7 @@ static void hsw_power_well_post_disable(struct drm_i915_private *dev_priv)
spin_lock_irqsave(&dev->vbl_lock, irqflags);
for_each_pipe(pipe)
if (pipe != PIPE_A)
dev->vblank[pipe].last = 0;
reset_vblank_counter(dev, pipe);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
}