+ * .. _`CEC-MODE-MONITOR-PIN`:
+
+ - ``CEC_MODE_MONITOR_PIN``
+ - 0xd0
+ - Put the file descriptor into pin monitoring mode. Can only be used in
+ combination with :ref:`CEC_MODE_NO_INITIATOR <CEC-MODE-NO-INITIATOR>`,
+ otherwise the ``EINVAL`` error code will be returned.
+ This mode requires that the :ref:`CEC_CAP_MONITOR_PIN <CEC-CAP-MONITOR-PIN>`
+ capability is set, otherwise the ``EINVAL`` error code is returned.
+ While in pin monitoring mode this file descriptor can receive the
+ ``CEC_EVENT_PIN_LOW`` and ``CEC_EVENT_PIN_HIGH`` events to see the
+ low-level CEC pin transitions. This is very useful for debugging.
+ This mode is only allowed if the process has the ``CAP_NET_ADMIN``
+ capability. If that is not set, then the ``EPERM`` error code is returned.