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54f38fcae5
Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee38 ("docs: Create a user-space API guide").
As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.
Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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1.0 KiB
ReStructuredText
33 lines
1.0 KiB
ReStructuredText
.. Permission is granted to copy, distribute and/or modify this
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.. document under the terms of the GNU Free Documentation License,
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.. Version 1.1 or any later version published by the Free Software
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.. Foundation, with no Invariant Sections, no Front-Cover Texts
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.. and no Back-Cover Texts. A copy of the license is included at
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.. Documentation/userspace-api/media/fdl-appendix.rst.
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..
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.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
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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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