On 04/03/2022 18:17, Dave Stevenson wrote:
Mapping to the drm_bridge flag pre_enable_upstream_first, add a new flag prepare_upstream_first to drm_panel to allow the panel driver to request that the upstream bridge should be pre_enabled before the panel prepare.
Signed-off-by: Dave Stevenson dave.stevenson@raspberrypi.com
Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org
drivers/gpu/drm/bridge/panel.c | 3 +++ include/drm/drm_panel.h | 10 ++++++++++ 2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 5be057575183..2ea08b3ba326 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -234,6 +234,9 @@ struct drm_bridge *drm_panel_bridge_add_typed(struct drm_panel *panel, panel_bridge->bridge.ops = DRM_BRIDGE_OP_MODES; panel_bridge->bridge.type = connector_type;
panel_bridge->bridge.pre_enable_upstream_first =
panel->prepare_upstream_first;drm_bridge_add(&panel_bridge->bridge);
return &panel_bridge->bridge;
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index 1ba2d424a53f..c0f39dfbd071 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -179,6 +179,16 @@ struct drm_panel { * Panel entry in registry. */ struct list_head list;
/**
* @prepare_upstream_first:** The upstream controller should be prepared first, before the prepare* for the panel is called. This is largely required for DSI panels* where the DSI host controller should be initialised to LP-11 before* the panel is powered up.*/bool prepare_upstream_first; };
void drm_panel_init(struct drm_panel *panel, struct device *dev,