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