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/media/uapi/fdl-appendix.rst.
8 .. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
10 .. _FE_ENABLE_HIGH_LNB_VOLTAGE:
12 ********************************
13 ioctl FE_ENABLE_HIGH_LNB_VOLTAGE
14 ********************************
19 FE_ENABLE_HIGH_LNB_VOLTAGE - Select output DC level between normal LNBf voltages or higher LNBf - voltages.
25 .. c:function:: int ioctl( int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high )
26 :name: FE_ENABLE_HIGH_LNB_VOLTAGE
33 File descriptor returned by :ref:`open() <frontend_f_open>`.
38 - 0 - normal 13V and 18V.
40 - >0 - enables slightly higher voltages instead of 13/18V, in order
41 to compensate for long antenna cables.
47 Select output DC level between normal LNBf voltages or higher LNBf
48 voltages between 0 (normal) or a value grater than 0 for higher
55 On success 0 is returned.
57 On error -1 is returned, and the ``errno`` variable is set
60 Generic error codes are described at the
61 :ref:`Generic Error Codes <gen-errors>` chapter.