From: Paulo Zanoni <paulo.r.zan...@intel.com>
This solves some "unclaimed register" messages when booting the
machine with eDP attached.
V2: Rebase and add the comment requested by Daniel.
Signed-off-by: Paulo Zanoni <paulo.r.zan...@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index be70f2d..36e0445 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3594,9 +3594,13 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
- /* Disable PF */
- I915_WRITE(PF_CTL(pipe), 0);
- I915_WRITE(PF_WIN_SZ(pipe), 0);
+ /* XXX: Once we have proper panel fitter state tracking implemented with
+ * hardware state read/check support we should switch to only disable
+ * the panel fitter when we know it's used. */
+ if (intel_using_power_well(dev)) {
+ I915_WRITE(PF_CTL(pipe), 0);
+ I915_WRITE(PF_WIN_SZ(pipe), 0);
+ }
intel_ddi_disable_pipe_clock(intel_crtc);
--
1.7.10.4
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