convert drm_atomic_helper_suspend/resume() to use
drm_mode_config_helper_suspend/resume().

exynos_drm_fbdev_suspend/resume can be removed
as drm_mode_config_helper_suspend/resume has
implement the same in generic way.

Signed-off-by: Souptick Joarder <jrdr.li...@gmail.com>
Signed-off-by: Ajit Negi <ajitn.li...@gmail.com>
---
v2: Address Inki Dae's comment. Remove
    ret variable from both suspend/resume
    function.

 drivers/gpu/drm/exynos/exynos_drm_drv.c   | 26 ++++----------------------
 drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 17 -----------------
 drivers/gpu/drm/exynos/exynos_drm_fbdev.h | 10 ----------
 3 files changed, 4 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c 
b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index a81b4a5..46d28cd 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -151,39 +151,21 @@ static void exynos_drm_postclose(struct drm_device *dev, 
struct drm_file *file)
 static int exynos_drm_suspend(struct device *dev)
 {
        struct drm_device *drm_dev = dev_get_drvdata(dev);
-       struct exynos_drm_private *private;
 
-       if (pm_runtime_suspended(dev) || !drm_dev)
+       if (pm_runtime_suspended(dev))
                return 0;
 
-       private = drm_dev->dev_private;
-
-       drm_kms_helper_poll_disable(drm_dev);
-       exynos_drm_fbdev_suspend(drm_dev);
-       private->suspend_state = drm_atomic_helper_suspend(drm_dev);
-       if (IS_ERR(private->suspend_state)) {
-               exynos_drm_fbdev_resume(drm_dev);
-               drm_kms_helper_poll_enable(drm_dev);
-               return PTR_ERR(private->suspend_state);
-       }
-
-       return 0;
+       return drm_mode_config_helper_suspend(drm_dev);
 }
 
 static int exynos_drm_resume(struct device *dev)
 {
        struct drm_device *drm_dev = dev_get_drvdata(dev);
-       struct exynos_drm_private *private;
 
-       if (pm_runtime_suspended(dev) || !drm_dev)
+       if (pm_runtime_suspended(dev))
                return 0;
 
-       private = drm_dev->dev_private;
-       drm_atomic_helper_resume(drm_dev, private->suspend_state);
-       exynos_drm_fbdev_resume(drm_dev);
-       drm_kms_helper_poll_enable(drm_dev);
-
-       return 0;
+       return drm_mode_config_helper_resume(drm_dev);
 }
 #endif
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c 
b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 132dd52..918dd2c 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -270,20 +270,3 @@ void exynos_drm_fbdev_fini(struct drm_device *dev)
        private->fb_helper = NULL;
 }
 
-void exynos_drm_fbdev_suspend(struct drm_device *dev)
-{
-       struct exynos_drm_private *private = dev->dev_private;
-
-       console_lock();
-       drm_fb_helper_set_suspend(private->fb_helper, 1);
-       console_unlock();
-}
-
-void exynos_drm_fbdev_resume(struct drm_device *dev)
-{
-       struct exynos_drm_private *private = dev->dev_private;
-
-       console_lock();
-       drm_fb_helper_set_suspend(private->fb_helper, 0);
-       console_unlock();
-}
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h 
b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
index b338472..6840b6a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
@@ -19,8 +19,6 @@
 
 int exynos_drm_fbdev_init(struct drm_device *dev);
 void exynos_drm_fbdev_fini(struct drm_device *dev);
-void exynos_drm_fbdev_suspend(struct drm_device *drm);
-void exynos_drm_fbdev_resume(struct drm_device *drm);
 
 #else
 
@@ -39,14 +37,6 @@ static inline void exynos_drm_fbdev_restore_mode(struct 
drm_device *dev)
 
 #define exynos_drm_output_poll_changed (NULL)
 
-static inline void exynos_drm_fbdev_suspend(struct drm_device *drm)
-{
-}
-
-static inline void exynos_drm_fbdev_resume(struct drm_device *drm)
-{
-}
-
 #endif
 
 #endif
-- 
1.9.1

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