drm/exynos: simplify sleep PM ops

PM ops in exynos_drm_drv were split into two separate function as they were
used also by drm device. Since PM ops have been removed from drm device, the
functions can be merged together.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_drv.c

@@ -304,45 +304,6 @@ int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state)
-{
-	struct drm_connector *connector;
-
-	drm_modeset_lock_all(dev);
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		int old_dpms = connector->dpms;
-
-		if (connector->funcs->dpms)
-			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
-
-		/* Set the old mode back to the connector for resume */
-		connector->dpms = old_dpms;
-	}
-	drm_modeset_unlock_all(dev);
-
-	return 0;
-}
-
-static int exynos_drm_resume(struct drm_device *dev)
-{
-	struct drm_connector *connector;
-
-	drm_modeset_lock_all(dev);
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		if (connector->funcs->dpms) {
-			int dpms = connector->dpms;
-
-			connector->dpms = DRM_MODE_DPMS_OFF;
-			connector->funcs->dpms(connector, dpms);
-		}
-	}
-	drm_modeset_unlock_all(dev);
-
-	return 0;
-}
-#endif
-
 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 {
 	struct drm_exynos_file_private *file_priv;
@@ -476,31 +437,54 @@ static struct drm_driver exynos_drm_driver = {
 };
 
 #ifdef CONFIG_PM_SLEEP
-static int exynos_drm_sys_suspend(struct device *dev)
+static int exynos_drm_suspend(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
-	pm_message_t message;
+	struct drm_connector *connector;
 
 	if (pm_runtime_suspended(dev) || !drm_dev)
 		return 0;
 
-	message.event = PM_EVENT_SUSPEND;
-	return exynos_drm_suspend(drm_dev, message);
+	drm_modeset_lock_all(drm_dev);
+	drm_for_each_connector(connector, drm_dev) {
+		int old_dpms = connector->dpms;
+
+		if (connector->funcs->dpms)
+			connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
+
+		/* Set the old mode back to the connector for resume */
+		connector->dpms = old_dpms;
+	}
+	drm_modeset_unlock_all(drm_dev);
+
+	return 0;
 }
 
-static int exynos_drm_sys_resume(struct device *dev)
+static int exynos_drm_resume(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct drm_connector *connector;
 
 	if (pm_runtime_suspended(dev) || !drm_dev)
 		return 0;
 
-	return exynos_drm_resume(drm_dev);
+	drm_modeset_lock_all(drm_dev);
+	drm_for_each_connector(connector, drm_dev) {
+		if (connector->funcs->dpms) {
+			int dpms = connector->dpms;
+
+			connector->dpms = DRM_MODE_DPMS_OFF;
+			connector->funcs->dpms(connector, dpms);
+		}
+	}
+	drm_modeset_unlock_all(drm_dev);
+
+	return 0;
 }
 #endif
 
 static const struct dev_pm_ops exynos_drm_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume)
+	SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
 };
 
 /* forward declaration */