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Diffstat (limited to 'Documentation/userspace-api/media/dvb/ca-get-cap.rst')
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diff --git a/Documentation/userspace-api/media/dvb/ca-get-cap.rst b/Documentation/userspace-api/media/dvb/ca-get-cap.rst new file mode 100644 index 000000000..9b29513ee --- /dev/null +++ b/Documentation/userspace-api/media/dvb/ca-get-cap.rst @@ -0,0 +1,46 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.ca + +.. _CA_GET_CAP: + +========== +CA_GET_CAP +========== + +Name +---- + +CA_GET_CAP + +Synopsis +-------- + +.. c:macro:: CA_GET_CAP + +``int ioctl(fd, CA_GET_CAP, struct ca_caps *caps)`` + +Arguments +--------- + +``fd`` + File descriptor returned by a previous call to :c:func:`open()`. + +``caps`` + Pointer to struct :c:type:`ca_caps`. + +Description +----------- + +Queries the Kernel for information about the available CA and descrambler +slots, and their types. + +Return Value +------------ + +On success 0 is returned and :c:type:`ca_caps` is filled. + +On error, -1 is returned and the ``errno`` variable is set +appropriately. + +The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter. |