drm/i915: Bring UP Power Wells before disabling RC6.
We need do forcewake before Disabling RC6, This is what the BIOS
expects while going into suspend.
v2: updated commit message. (Daniel)
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Deepak S <deepak.s@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b1b3a6b..a381c99 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3533,8 +3533,14 @@
{
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);
}