From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Runtime suspends disabled all interrupts, so in order to get them back
fully we need to also do the HPD irq setup on runtime resume. Except
on VLV/CHV where the display interrupt initialization is part of the
display power well powerup.
Reviewed-by: Paulo Zanoni <paulo.r.zan...@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index ce3bd0c..b4c0b58 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1552,6 +1552,15 @@ static int intel_runtime_resume(struct device *device)
gen6_update_ring_freq(dev);
intel_runtime_pm_enable_interrupts(dev_priv);
+
+ /*
+ * On VLV/CHV display interrupts are part of the display
+ * power well, so hpd is reinitialized from there. For
+ * everyone else do it here.
+ */
+ if (!IS_VALLEYVIEW(dev_priv))
+ intel_hpd_init(dev_priv);
+
intel_enable_gt_powersave(dev);
if (ret)
--
2.4.6
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