Documentation/userspace-api/media/dvb/ca.rst

Source file repositories/reference/linux-study-clean/Documentation/userspace-api/media/dvb/ca.rst

File Facts

System: Linux kernel
Corpus path: Documentation/userspace-api/media/dvb/ca.rst
Extension: .rst
Size: 630 bytes
Lines: 26
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

.. 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

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.