drm/i915: Save/restore HWS_PGA on suspend/resume

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / i915_suspend.c

diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 5ddc6e5..5d84027 100644 (file)
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -244,6 +244,9 @@ int i915_save_state(struct drm_device *dev)
        if (IS_I965G(dev) && IS_MOBILE(dev))
                dev_priv->saveRENDERSTANDBY = I915_READ(MCHBAR_RENDER_STANDBY);
 
+       /* Hardware status page */
+       dev_priv->saveHWS = I915_READ(HWS_PGA);
+
        /* Display arbitration control */
        dev_priv->saveDSPARB = I915_READ(DSPARB);
 
@@ -373,6 +376,9 @@ int i915_restore_state(struct drm_device *dev)
        if (IS_I965G(dev) && IS_MOBILE(dev))
                I915_WRITE(MCHBAR_RENDER_STANDBY, dev_priv->saveRENDERSTANDBY);
 
+       /* Hardware status page */
+       I915_WRITE(HWS_PGA, dev_priv->saveHWS);
+
        /* Display arbitration */
        I915_WRITE(DSPARB, dev_priv->saveDSPARB);