[PATCH v3 07/11] drm/rcar-du: Use drm_mode_config_helper_suspend/resume()

[Noralf Trønnes]

Replace driver's code with the generic helpers that do the same thing.

Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 21 +++------------------
 drivers/gpu/drm/rcar-du/rcar_du_drv.h |  1 -
 2 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 6e02c762a557..db040a64de45 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -22,10 +22,10 @@
 #include <linux/wait.h>
 
 #include <drm/drmP.h>
-#include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_modeset_helper.h>
 
 #include "rcar_du_drv.h"
 #include "rcar_du_kms.h"
@@ -310,30 +310,15 @@ static struct drm_driver rcar_du_driver = {
 static int rcar_du_pm_suspend(struct device *dev)
 {
 	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
-	struct drm_atomic_state *state;
 
-	drm_kms_helper_poll_disable(rcdu->ddev);
-	drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, true);
-
-	state = drm_atomic_helper_suspend(rcdu->ddev);
-	if (IS_ERR(state)) {
-		drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
-		drm_kms_helper_poll_enable(rcdu->ddev);
-		return PTR_ERR(state);
-	}
-
-	rcdu->suspend_state = state;
-
-	return 0;
+	return drm_mode_config_helper_suspend(rcdu->ddev);
 }
 
 static int rcar_du_pm_resume(struct device *dev)
 {
 	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
 
-	drm_atomic_helper_resume(rcdu->ddev, rcdu->suspend_state);
-	drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false);
-	drm_kms_helper_poll_enable(rcdu->ddev);
+	drm_mode_config_helper_resume(rcdu->ddev);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index f400fde65a0c..f8cd79488ece 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -81,7 +81,6 @@ struct rcar_du_device {
 
 	struct drm_device *ddev;
 	struct drm_fbdev_cma *fbdev;
-	struct drm_atomic_state *suspend_state;
 
 	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
 	unsigned int num_crtcs;
-- 
2.14.2