[Intel-gfx] [PATCH v2 1/1] drm/i915: Direct all DE interrupts to host.

[Sagar Arun Kamble]

Due to flip interrupts routed to GuC, GuC stays awake always and GT does not enter RC6.
GuC firmware should re-direct to GuC those interrupts that it can handle.

v2: Commit message change and routing all interrupts to host. (Tom)

Cc: Alex Dai <yu.dai at intel.com>
Cc: Tom O'Rourke <Tom.O'Rourke at intel.com>
Cc: Akash Goel <akash.goel at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/intel_guc_loader.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 5eafd31..0b047c4 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -110,12 +110,8 @@ static void direct_interrupts_to_guc(struct drm_i915_private *dev_priv)
 	for_each_ring(ring, dev_priv, i)
 		I915_WRITE(RING_MODE_GEN7(ring), irqs);
 
-	/* tell DE to send (all) flip_done to GuC */
-	irqs = DERRMR_PIPEA_PRI_FLIP_DONE | DERRMR_PIPEA_SPR_FLIP_DONE |
-	       DERRMR_PIPEB_PRI_FLIP_DONE | DERRMR_PIPEB_SPR_FLIP_DONE |
-	       DERRMR_PIPEC_PRI_FLIP_DONE | DERRMR_PIPEC_SPR_FLIP_DONE;
-	/* Unmasked bits will cause GuC response message to be sent */
-	I915_WRITE(DE_GUCRMR, ~irqs);
+	/* tell DE to send nothing to GuC */
+	I915_WRITE(DE_GUCRMR, ~0);
 
 	/* route USER_INTERRUPT to Host, all others are sent to GuC. */
 	irqs = GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT |
-- 
1.9.1