summaryrefslogtreecommitdiff
path: root/Documentation/userspace-api/media/dvb/ca.rst
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/userspace-api/media/dvb/ca.rst')
-rw-r--r--Documentation/userspace-api/media/dvb/ca.rst32
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/dvb/ca.rst b/Documentation/userspace-api/media/dvb/ca.rst
new file mode 100644
index 000000000000..643b7c414943
--- /dev/null
+++ b/Documentation/userspace-api/media/dvb/ca.rst
@@ -0,0 +1,32 @@
+.. Permission is granted to copy, distribute and/or modify this
+.. document under the terms of the GNU Free Documentation License,
+.. Version 1.1 or any later version published by the Free Software
+.. Foundation, with no Invariant Sections, no Front-Cover Texts
+.. and no Back-Cover Texts. A copy of the license is included at
+.. Documentation/userspace-api/media/fdl-appendix.rst.
+..
+.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
+
+.. _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 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