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Diffstat (limited to 'Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst')
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diff --git a/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst b/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst new file mode 100644 index 000000000000..ea66f72fe5f8 --- /dev/null +++ b/Documentation/userspace-api/media/dvb/fe-dishnetwork-send-legacy-cmd.rst @@ -0,0 +1,62 @@ +.. 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 + +.. _FE_DISHNETWORK_SEND_LEGACY_CMD: + +****************************** +FE_DISHNETWORK_SEND_LEGACY_CMD +****************************** + +Name +==== + +FE_DISHNETWORK_SEND_LEGACY_CMD + + +Synopsis +======== + +.. c:function:: int ioctl(int fd, FE_DISHNETWORK_SEND_LEGACY_CMD, unsigned long cmd) + :name: FE_DISHNETWORK_SEND_LEGACY_CMD + + +Arguments +========= + +``fd`` + File descriptor returned by :c:func:`open() <dvb-fe-open>`. + +``cmd`` + Sends the specified raw cmd to the dish via DISEqC. + + +Description +=========== + +.. warning:: + This is a very obscure legacy command, used only at stv0299 + driver. Should not be used on newer drivers. + +It provides a non-standard method for selecting Diseqc voltage on the +frontend, for Dish Network legacy switches. + +As support for this ioctl were added in 2004, this means that such +dishes were already legacy in 2004. + + +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. |