Merge tag 'drm-intel-next-2015-02-27' of git://anongit.freedesktop.org/drm-intel...

[cascardo/linux.git] / drivers / gpu / drm / i915 / intel_uncore.c

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 439cae4..8879f17 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -167,7 +167,8 @@ fw_domains_reset(struct drm_i915_private *dev_priv, enum forcewake_domains fw_do
        struct intel_uncore_forcewake_domain *d;
        enum forcewake_domain_id id;
 
-       WARN_ON(dev_priv->uncore.fw_domains == 0);
+       if (dev_priv->uncore.fw_domains == 0)
+               return;
 
        for_each_fw_domain_mask(d, fw_domains, dev_priv, id)
                fw_domain_reset(d);
@@ -1031,6 +1032,9 @@ static void intel_uncore_fw_domains_init(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
+       if (INTEL_INFO(dev_priv->dev)->gen <= 5)
+               return;
+
        if (IS_GEN9(dev)) {
                dev_priv->uncore.funcs.force_wake_get = fw_domains_get;
                dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
@@ -1103,6 +1107,9 @@ static void intel_uncore_fw_domains_init(struct drm_device *dev)
                fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
                               FORCEWAKE, FORCEWAKE_ACK);
        }
+
+       /* All future platforms are expected to require complex power gating */
+       WARN_ON(dev_priv->uncore.fw_domains == 0);
 }
 
 void intel_uncore_init(struct drm_device *dev)