From: Kristen Carlson Accardi <kristen@xxxxxxxxxxxxxxx>
This matches the runtime suspend paths and allows the system to enter
the lowest power mode at freeze time.
Signed-off-by: Kristen Carlson Accardi <kristen@xxxxxxxxxxxxxxx>
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b6211d7..24dc856 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -558,6 +558,9 @@ static int i915_drm_freeze(struct drm_device *dev)
intel_display_set_init_power(dev_priv, false);
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ hsw_enable_pc8(dev_priv);
+
return 0;
}
@@ -618,6 +621,9 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ hsw_disable_pc8(dev_priv);
+
if (drm_core_check_feature(dev, DRIVER_MODESET) &&
restore_gtt_mappings) {
mutex_lock(&dev->struct_mutex);
--
1.9.1
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