ARM64: dts: rk3368: enable backlight node

[firefly-linux-kernel-4.4.55.git] / include / drm / drm_fb_helper.h

diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index dbab4622b58f7195b089d8fcadd27f31aec36e02..87b090c4b7306556dfe2096b2040890736632fab 100644 (file)
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -104,6 +104,20 @@ struct drm_fb_helper_connector {
        struct drm_connector *connector;
 };
 
+/**
+ * struct drm_fb_helper - helper to emulate fbdev on top of kms
+ * @fb:  Scanout framebuffer object
+ * @dev:  DRM device
+ * @crtc_count: number of possible CRTCs
+ * @crtc_info: per-CRTC helper state (mode, x/y offset, etc)
+ * @connector_count: number of connected connectors
+ * @connector_info_alloc_count: size of connector_info
+ * @funcs: driver callbacks for fb helper
+ * @fbdev: emulated fbdev device info struct
+ * @pseudo_palette: fake palette of 16 colors
+ * @kernel_fb_list: list_head in kernel_fb_helper_list
+ * @delayed_hotplug: was there a hotplug while kms master active?
+ */
 struct drm_fb_helper {
        struct drm_framebuffer *fb;
        struct drm_device *dev;
@@ -120,6 +134,17 @@ struct drm_fb_helper {
        /* we got a hotplug but fbdev wasn't running the console
           delay until next set_par */
        bool delayed_hotplug;
+
+       /**
+        * @atomic:
+        *
+        * Use atomic updates for restore_fbdev_mode(), etc.  This defaults to
+        * true if driver has DRIVER_ATOMIC feature flag, but drivers can
+        * override it to true after drm_fb_helper_init() if they support atomic
+        * modeset but do not yet advertise DRIVER_ATOMIC (note that fb-helper
+        * does not require ASYNC commits).
+        */
+       bool atomic;
 };
 
 #ifdef CONFIG_DRM_FBDEV_EMULATION
@@ -136,7 +161,7 @@ int drm_fb_helper_set_par(struct fb_info *info);
 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
                            struct fb_info *info);
 
-bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
+int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
 
 struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
 void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
@@ -226,10 +251,10 @@ static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
        return 0;
 }
 
-static inline bool
+static inline int
 drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
 {
-       return true;
+       return 0;
 }
 
 static inline struct fb_info *