+#define to_drm_device(d) container_of(d, struct drm_device, dev)
+
+/**
+ * drm_sysfs_suspend - DRM class suspend hook
+ * @dev: Linux device to suspend
+ * @state: power state to enter
+ *
+ * Just figures out what the actual struct drm_device associated with
+ * @dev is and calls its suspend hook, if present.
+ */
+static int drm_sysfs_suspend(struct device *dev, pm_message_t state)
+{
+ struct drm_device *drm_dev = to_drm_device(dev);
+
+ printk(KERN_ERR "%s\n", __FUNCTION__);
+
+ if (drm_dev->driver->suspend)
+ return drm_dev->driver->suspend(drm_dev);
+
+ return 0;
+}
+
+/**
+ * drm_sysfs_resume - DRM class resume hook
+ * @dev: Linux device to resume
+ *
+ * Just figures out what the actual struct drm_device associated with
+ * @dev is and calls its resume hook, if present.
+ */
+static int drm_sysfs_resume(struct device *dev)
+{
+ struct drm_device *drm_dev = to_drm_device(dev);
+
+ if (drm_dev->driver->resume)
+ return drm_dev->driver->resume(drm_dev);
+
+ return 0;
+}
+