From: Deepak S <deepa...@intel.com>

In BDW, Apart from unmasking up/down threshold interrupts. we need
to umask bit 32 of PM_INTRMASK to route interrupts to target via Display
Interface.

Signed-off-by: Deepak S <deepa...@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h | 1 +
 drivers/gpu/drm/i915/intel_pm.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c2dd436..8c7841b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5105,6 +5105,7 @@ enum punit_power_well {
 #define GEN6_RC6p_THRESHOLD                    0xA0BC
 #define GEN6_RC6pp_THRESHOLD                   0xA0C0
 #define GEN6_PMINTRMSK                         0xA168
+#define GEN8_PMINTR_REDIRECT_TO_NON_DISP       0x7FFFFFFF
 
 #define GEN6_PMISR                             0x44020
 #define GEN6_PMIMR                             0x44024 /* rps_lock */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 27b64ab..6b123cd 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3066,6 +3066,8 @@ static u32 gen6_rps_pm_mask(struct drm_i915_private 
*dev_priv, u8 val)
        if (INTEL_INFO(dev_priv->dev)->gen <= 7 && !IS_HASWELL(dev_priv->dev))
                mask |= GEN6_PM_RP_UP_EI_EXPIRED;
 
+       mask &= GEN8_PMINTR_REDIRECT_TO_NON_DISP;
+
        return ~mask;
 }
 
-- 
1.8.5.2

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