[Intel-gfx] [RFC] drm/i915: Disable connector polling at runtime suspend

[Anshuman Gupta]

While i915 device is in runtime suspend, DRM connector polling
causing device to wakeup from runtime suspend.
This harm overall cpu idle statistics, therefore
disabling polling while in runtime suspend.

Cc: Imre Deak <imre.deak at intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5fd5af4bc855..1229c72f19c9 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1595,6 +1595,8 @@ static int intel_runtime_suspend(struct device *kdev)
 
 	disable_rpm_wakeref_asserts(rpm);
 
+	drm_kms_helper_poll_disable(&dev_priv->drm);
+
 	/*
 	 * We are safe here against re-faults, since the fault handler takes
 	 * an RPM reference.
@@ -1699,6 +1701,8 @@ static int intel_runtime_resume(struct device *kdev)
 	 */
 	intel_gt_runtime_resume(&dev_priv->gt);
 
+	drm_kms_helper_poll_enable(&dev_priv->drm);
+
 	/*
 	 * On VLV/CHV display interrupts are part of the display
 	 * power well, so hpd is reinitialized from there. For
-- 
2.26.2