.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _dvb_ca: #################### Digital TV CA Device #################### The Digital TV CA device controls the conditional access hardware. It can be accessed through ``/dev/dvb/adapter?/ca?``. Data types and ioctl definitions can be accessed by including ``linux/dvb/ca.h`` in your application. .. note:: There are three ioctls at this API that aren't documented: :ref:`CA_GET_MSG`, :ref:`CA_SEND_MSG` and :ref:`CA_SET_DESCR`. Documentation for them are welcome. .. toctree:: :maxdepth: 1 ca_data_types ca_function_calls ca_high_level