Commit 6ec2cf81 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov
Browse files

drm/bridge_connector: stop filtering events in drm_bridge_connector_hpd_cb() 



In some cases the bridge drivers would like to receive hotplug events
even in the case new status is equal to the old status. In the DP case
this is used to deliver "attention" messages to the DP host. Stop
filtering the events in the drm_bridge_connector_hpd_cb() and let
drivers decide whether they would like to receive the event or not.

Reviewed-by: default avatarJanne Grunau <j@jannau.net>
Link: https://lore.kernel.org/r/20231009174048.2695981-3-dmitry.baryshkov@linaro.org


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009174048.2695981-3-dmitry.baryshkov@linaro.org
parent fc93835b

drivers/gpu/drm/drm_bridge_connector.c

+0 −5
Original line number Diff line number Diff line
@@ -113,16 +113,11 @@ static void drm_bridge_connector_hpd_cb(void *cb_data, 
	struct drm_bridge_connector *drm_bridge_connector = cb_data;

	struct drm_connector *connector = &drm_bridge_connector->base;

	struct drm_device *dev = connector->dev;

	enum drm_connector_status old_status;



	mutex_lock(&dev->mode_config.mutex);

	old_status = connector->status;

	connector->status = status;

	mutex_unlock(&dev->mode_config.mutex);



	if (old_status == status)

		return;



	drm_bridge_connector_hpd_notify(connector, status);



	drm_kms_helper_connector_hotplug_event(connector);