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lastdragon
2026-09-06 12:53:21 -06:00
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linux-7.2.3/Documentation/userspace-api/media/dvb/ca.rst
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.. 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