From: Deepak S <deepak.s@xxxxxxxxx>
We need do forcewake before Disabling RC6, This is what the BIOS
expects while going into suspend.
v2: updated commit message. (Daniel)
Reviewer: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Cc: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Signed-off-by: Deepak S <deepak.s@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 41de760..9f96baa 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3527,8 +3527,14 @@ static void valleyview_disable_rps(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ /* we're doing forcewake before Disabling RC6,
+ * This what the BIOS expects when going into suspend */
+ gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL);
+
I915_WRITE(GEN6_RC_CONTROL, 0);
+ gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
+
gen6_disable_rps_interrupts(dev);
}
--
1.9.3
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