@@ -3226,6 +3226,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
+ u32 pctl;
if (!intel_crtc->active)
return;
@@ -3241,6 +3242,13 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
intel_disable_plane(dev_priv, plane, pipe);
intel_disable_pipe(dev_priv, pipe);
+
+ /* Disable pannel fitter if it is on this pipe. */
+ pctl = I915_READ(PFIT_CONTROL);
+ if ((pctl & PFIT_ENABLE) &&
+ ((pctl & PFIT_PIPE_MASK) >> PFIT_PIPE_SHIFT) == pipe)
+ I915_WRITE(PFIT_CONTROL, 0);
+
intel_disable_pll(dev_priv, pipe);
intel_crtc->active = false;
This is a note to let you know that I have just added a patch titled drm/i915: disable shared panel fitter for pipe to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 49a51b724eaafbce1fcab65463529fbb60e081cc Mon Sep 17 00:00:00 2001 From: Mika Kuoppala <mika.kuoppala@linux.intel.com> Date: Fri, 8 Feb 2013 16:35:37 +0200 Subject: [PATCH] drm/i915: disable shared panel fitter for pipe commit 24a1f16de97c4cf0029d9acd04be06db32208726 upstream. If encoder is switched off by BIOS, but the panel fitter is left on, we never try to turn off the panel fitter and leave it still attached to the pipe - which can cause blurry output elsewhere. Based on work by Chris Wilson <chris@chris-wilson.co.uk> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58867 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Tested-by: Andreas Sturmlechner <andreas.sturmlechner@gmail.com> [danvet: Remove the redundant HAS_PCH_SPLIT check and add a tiny comment.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> [ luis: adjust context ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/gpu/drm/i915/intel_display.c | 8 ++++++++ 1 file changed, 8 insertions(+) -- 1.8.1.2