drm/gma500: Add hooks for hibernation

Currently we do whatever is done during suspend/resume but we might need some
more work for hibernation so keep them in separate functions.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>

drivers/gpu/drm/gma500/power.c

@@ -315,3 +315,18 @@ int psb_runtime_idle(struct device *dev)
 	else
 		return 1;
 }
+
+int gma_power_thaw(struct device *_dev)
+{
+	return gma_power_resume(_dev);
+}
+
+int gma_power_freeze(struct device *_dev)
+{
+	return gma_power_suspend(_dev);
+}
+
+int gma_power_restore(struct device *_dev)
+{
+	return gma_power_resume(_dev);
+}

drivers/gpu/drm/gma500/power.h

@@ -41,6 +41,9 @@ void gma_power_uninit(struct drm_device *dev);
  */
 int gma_power_suspend(struct device *dev);
 int gma_power_resume(struct device *dev);
+int gma_power_thaw(struct device *dev);
+int gma_power_freeze(struct device *dev);
+int gma_power_restore(struct device *_dev);
 
 /*
  * These are the functions the driver should use to wrap all hw access

drivers/gpu/drm/gma500/psb_drv.c

@@ -601,6 +601,9 @@ static void psb_remove(struct pci_dev *pdev)
 static const struct dev_pm_ops psb_pm_ops = {
 	.resume = gma_power_resume,
 	.suspend = gma_power_suspend,
+	.thaw = gma_power_thaw,
+	.freeze = gma_power_freeze,
+	.restore = gma_power_restore,
 	.runtime_suspend = psb_runtime_suspend,
 	.runtime_resume = psb_runtime_resume,
 	.runtime_idle = psb_runtime_idle,