1.. Permission is granted to copy, distribute and/or modify this 2.. document under the terms of the GNU Free Documentation License, 3.. Version 1.1 or any later version published by the Free Software 4.. Foundation, with no Invariant Sections, no Front-Cover Texts 5.. and no Back-Cover Texts. A copy of the license is included at 6.. Documentation/userspace-api/media/fdl-appendix.rst. 7.. 8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections 9 10.. _CA_SEND_MSG: 11 12=========== 13CA_SEND_MSG 14=========== 15 16Name 17---- 18 19CA_SEND_MSG 20 21 22Synopsis 23-------- 24 25.. c:function:: int ioctl(fd, CA_SEND_MSG, struct ca_msg *msg) 26 :name: CA_SEND_MSG 27 28 29Arguments 30--------- 31 32``fd`` 33 File descriptor returned by a previous call to :c:func:`open() <cec-open>`. 34 35``msg`` 36 Pointer to struct :c:type:`ca_msg`. 37 38 39Description 40----------- 41 42Sends a message via a CI CA module. 43 44.. note:: 45 46 Please notice that, on most drivers, this is done by writing 47 to the /dev/adapter?/ca? device node. 48 49Return Value 50------------ 51 52On success 0 is returned. 53 54On error -1 is returned, and the ``errno`` variable is set 55appropriately. 56 57Generic error codes are described at the 58:ref:`Generic Error Codes <gen-errors>` chapter. 59