We can't read the pfit regs if the power well is off, so use the cached
value.
v2: re-add lost comment (Jesse)
make sure the crtc using the fitter is actually enabled (Jesse)
Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
---
drivers/gpu/drm/i915/intel_display.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6504337..6be34f2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5918,7 +5918,7 @@ static void haswell_modeset_global_resources(struct drm_device *dev)
* sequence that's not yet available. Just in case desktop eDP
* on PORT D is possible on haswell, too. */
/* Even the eDP panel fitter is outside the always-on well. */
- if (I915_READ(PF_WIN_SZ(crtc->pipe)))
+ if (crtc->config.pch_pfit.size && crtc->base.enabled)
enable = true;
}
--
1.7.10.4
