From 98b6bd998ae057611d2bc040ace1fc847f575b84 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 20 May 2012 20:00:25 +0200 Subject: [PATCH] drm/i915: IBX has a fixed pch pll to pch pipe mapping This should fix breakage introduced in commit ee7b9f93fd96a72e5d09e2b44024c11880873c6b Author: Jesse Barnes 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 Cc: Chris Wilson Reviewed-by: Chris Wilson Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49712 Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index f3d39f4f6909..3c71850ddf20 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2911,6 +2911,17 @@ static struct intel_pch_pll *intel_get_pch_pll(struct intel_crtc *intel_crtc, u3 goto prepare; } + if (HAS_PCH_IBX(dev_priv->dev)) { + /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */ + i = intel_crtc->pipe; + pll = &dev_priv->pch_plls[i]; + + DRM_DEBUG_KMS("CRTC:%d using pre-allocated PCH PLL %x\n", + intel_crtc->base.base.id, pll->pll_reg); + + goto found; + } + for (i = 0; i < dev_priv->num_pch_pll; i++) { pll = &dev_priv->pch_plls[i]; -- 2.30.2