1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2
3.. _dvb_ca:
4
5####################
6Digital TV CA Device
7####################
8
9The Digital TV CA device controls the conditional access hardware. It
10can be accessed through ``/dev/dvb/adapter?/ca?``. Data types and ioctl
11definitions can be accessed by including ``linux/dvb/ca.h`` in your
12application.
13
14.. note::
15
16   There are three ioctls at this API that aren't documented:
17   :ref:`CA_GET_MSG`, :ref:`CA_SEND_MSG` and :ref:`CA_SET_DESCR`.
18   Documentation for them are welcome.
19
20.. toctree::
21    :maxdepth: 1
22
23    ca_data_types
24    ca_function_calls
25    ca_high_level
26