Add helper functions to create bridge chain and to call the corresponding next_bridge functions.
Signed-off-by: Ajay Kumar ajaykumar.rs@samsung.com Suggested-by: Rob Clark robdclark@gmail.com --- include/drm/drm_crtc.h | 72 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+)
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index e55fccb..91ab89c 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -619,6 +619,7 @@ struct drm_bridge_funcs { struct drm_bridge { struct drm_device *dev; struct list_head head; + struct drm_bridge *next_bridge;
struct drm_mode_object base;
@@ -1073,6 +1074,77 @@ static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev, return mo ? obj_to_encoder(mo) : NULL; }
+static inline int drm_bridge_add_to_chain(struct drm_bridge *head, + struct drm_bridge *last) +{ + struct drm_bridge *temp = head; + + if (head && last) { + while (temp->next_bridge) + temp = temp->next_bridge; + + temp->next_bridge = last; + return 0; + } + + return -EINVAL; +} + +static inline void drm_next_bridge_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->mode_fixup) + bridge->next_bridge->funcs->mode_fixup(bridge->next_bridge, + mode, adjusted_mode); +} + +static inline void drm_next_bridge_disable(struct drm_bridge *bridge) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->disable) + bridge->next_bridge->funcs->disable(bridge->next_bridge); +} + +static inline void drm_next_bridge_post_disable(struct drm_bridge *bridge) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->post_disable) + bridge->next_bridge->funcs->post_disable(bridge->next_bridge); +} + +static inline void drm_next_bridge_mode_set(struct drm_bridge *bridge, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->mode_set) + bridge->next_bridge->funcs->mode_set(bridge->next_bridge, + mode, adjusted_mode); +} + +static inline void drm_next_bridge_pre_enable(struct drm_bridge *bridge) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->pre_enable) + bridge->next_bridge->funcs->pre_enable(bridge->next_bridge); +} + +static inline void drm_next_bridge_enable(struct drm_bridge *bridge) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->enable) + bridge->next_bridge->funcs->enable(bridge->next_bridge); +} + +static inline void drm_next_bridge_destroy(struct drm_bridge *bridge) +{ + if (bridge && bridge->next_bridge && bridge->next_bridge->funcs && + bridge->next_bridge->funcs->destroy) + bridge->next_bridge->funcs->destroy(bridge->next_bridge); +} + /* Plane list iterator for legacy (overlay only) planes. */ #define drm_for_each_legacy_plane(plane, planelist) \ list_for_each_entry(plane, planelist, head) \