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1110  * drm_bridge_hpd_enable - enable hot plug detection for the bridge
1112  * @cb: hot-plug detection callback
1113  * @data: data to be passed to the hot-plug detection callback
1116  * and @data as hot plug notification callback. From now on the @cb will be
1118  * until hot plug notification gets disabled with drm_bridge_hpd_disable().
1120  * Hot plug detection is supported only if the DRM_BRIDGE_OP_HPD flag is set in
1123  * Only one hot plug detection callback can be registered at a time, it is an
1124  * error to call this function when hot plug detection is already enabled for
1137 	if (WARN(bridge->hpd_cb, "Hot plug detection already enabled\n"))  in drm_bridge_hpd_enable()
1152  * drm_bridge_hpd_disable - disable hot plug detection for the bridge
1155  * Call &drm_bridge_funcs.hpd_disable if implemented and unregister the hot
1160  * Hot plug detection is supported only if the DRM_BRIDGE_OP_HPD flag is set in
1179  * drm_bridge_hpd_notify - notify hot plug detection events
1183  * Bridge drivers shall call this function to report hot plug events when they
1184  * detect a change in the output status, when hot plug detection has been