Commit a928d536 authored by Paulo Zanoni's avatar Paulo Zanoni Committed by Daniel Vetter

drm/i915: implement ironlake_wait_for_vblank

intel_wait_for_vblank uses PIPESTAT, which does not exist on Ironlake
and newer, so now we use PIPEFRAME.
Signed-off-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Ditch the check for disable pipe from the new ilk wait for
vblank function to keep it consisten with existing behaviour.]
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 4e89ee17
......@@ -784,6 +784,17 @@ intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
return true;
}
static void ironlake_wait_for_vblank(struct drm_device *dev, int pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 frame, frame_reg = PIPEFRAME(pipe);
frame = I915_READ(frame_reg);
if (wait_for(I915_READ_NOTRACE(frame_reg) != frame, 50))
DRM_DEBUG_KMS("vblank wait timed out\n");
}
/**
* intel_wait_for_vblank - wait for vblank on a given pipe
* @dev: drm device
......@@ -797,6 +808,11 @@ void intel_wait_for_vblank(struct drm_device *dev, int pipe)
struct drm_i915_private *dev_priv = dev->dev_private;
int pipestat_reg = PIPESTAT(pipe);
if (INTEL_INFO(dev)->gen >= 5) {
ironlake_wait_for_vblank(dev, pipe);
return;
}
/* Clear existing vblank status. Note this will clear any other
* sticky status fields as well.
*
......
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