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cubelinux-kernel/Documentation/userspace-api/media/dvb/ca.rst
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Greg Kroah-Hartman 598cf27219 Linux 6.19.3
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com>
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Brett A C Sheffield <bacs@librecast.net>
Tested-by: Mark Brown <broonie@kernel.org>
Tested-by: Luna Jernberg <droidbittin@gmail.com>
Tested-by: Ronald Warsow <rwarsow@gmx.de>
Tested-by: Justin M. Forbes <jforbes@fedoraproject.org>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-19 16:33:27 +01:00

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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