diff options
Diffstat (limited to 'Documentation/media/uapi/dvb/ca-set-descr.rst')
| -rw-r--r-- | Documentation/media/uapi/dvb/ca-set-descr.rst | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/media/uapi/dvb/ca-set-descr.rst b/Documentation/media/uapi/dvb/ca-set-descr.rst new file mode 100644 index 000000000..a6c47205f --- /dev/null +++ b/Documentation/media/uapi/dvb/ca-set-descr.rst @@ -0,0 +1,46 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _CA_SET_DESCR: + +============ +CA_SET_DESCR +============ + +Name +---- + +CA_SET_DESCR + + +Synopsis +-------- + +.. c:function:: int ioctl(fd, CA_SET_DESCR, struct ca_descr *desc) + :name: CA_SET_DESCR + + +Arguments +--------- + +``fd`` + File descriptor returned by a previous call to :c:func:`open() <cec-open>`. + +``msg`` + Pointer to struct :c:type:`ca_descr`. + +Description +----------- + +CA_SET_DESCR is used for feeding descrambler CA slots with descrambling +keys (refered as control words). + +Return Value +------------ + +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter. |