drm/i915: IBX has a fixed pch pll to pch pipe mapping
This should fix breakage introduced in
commit ee7b9f93fd
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri Apr 20 17:11:53 2012 +0100
drm/i915: manage PCH PLLs separately from pipes
v2: Add a DRM_DEBUG_KMS message to explain why a given pll was
selected, suggested by Chris Wilson.
v3: Actually run git add.
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49712
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -2911,6 +2911,17 @@ static struct intel_pch_pll *intel_get_pch_pll(struct intel_crtc *intel_crtc, u3
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goto prepare;
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}
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if (HAS_PCH_IBX(dev_priv->dev)) {
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/* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
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i = intel_crtc->pipe;
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pll = &dev_priv->pch_plls[i];
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DRM_DEBUG_KMS("CRTC:%d using pre-allocated PCH PLL %x\n",
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intel_crtc->base.base.id, pll->pll_reg);
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goto found;
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}
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for (i = 0; i < dev_priv->num_pch_pll; i++) {
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pll = &dev_priv->pch_plls[i];
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