1059b1c5bSMauro Carvalho Chehab.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2f9b2e8aaSMauro Carvalho Chehab.. c:namespace:: DTV.fe 354f38fcaSMauro Carvalho Chehab 454f38fcaSMauro Carvalho Chehab.. _FE_ENABLE_HIGH_LNB_VOLTAGE: 554f38fcaSMauro Carvalho Chehab 654f38fcaSMauro Carvalho Chehab******************************** 754f38fcaSMauro Carvalho Chehabioctl FE_ENABLE_HIGH_LNB_VOLTAGE 854f38fcaSMauro Carvalho Chehab******************************** 954f38fcaSMauro Carvalho Chehab 1054f38fcaSMauro Carvalho ChehabName 1154f38fcaSMauro Carvalho Chehab==== 1254f38fcaSMauro Carvalho Chehab 1354f38fcaSMauro Carvalho ChehabFE_ENABLE_HIGH_LNB_VOLTAGE - Select output DC level between normal LNBf voltages or higher LNBf - voltages. 1454f38fcaSMauro Carvalho Chehab 1554f38fcaSMauro Carvalho ChehabSynopsis 1654f38fcaSMauro Carvalho Chehab======== 1754f38fcaSMauro Carvalho Chehab 18f9b2e8aaSMauro Carvalho Chehab.. c:macro:: FE_ENABLE_HIGH_LNB_VOLTAGE 1954f38fcaSMauro Carvalho Chehab 20f9b2e8aaSMauro Carvalho Chehab``int ioctl(int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high)`` 2154f38fcaSMauro Carvalho Chehab 2254f38fcaSMauro Carvalho ChehabArguments 2354f38fcaSMauro Carvalho Chehab========= 2454f38fcaSMauro Carvalho Chehab 2554f38fcaSMauro Carvalho Chehab``fd`` 26f9b2e8aaSMauro Carvalho Chehab File descriptor returned by :c:func:`open()`. 2754f38fcaSMauro Carvalho Chehab 2854f38fcaSMauro Carvalho Chehab``high`` 2954f38fcaSMauro Carvalho Chehab Valid flags: 3054f38fcaSMauro Carvalho Chehab 3154f38fcaSMauro Carvalho Chehab - 0 - normal 13V and 18V. 3254f38fcaSMauro Carvalho Chehab 3354f38fcaSMauro Carvalho Chehab - >0 - enables slightly higher voltages instead of 13/18V, in order 3454f38fcaSMauro Carvalho Chehab to compensate for long antenna cables. 3554f38fcaSMauro Carvalho Chehab 3654f38fcaSMauro Carvalho ChehabDescription 3754f38fcaSMauro Carvalho Chehab=========== 3854f38fcaSMauro Carvalho Chehab 3954f38fcaSMauro Carvalho ChehabSelect output DC level between normal LNBf voltages or higher LNBf 4054f38fcaSMauro Carvalho Chehabvoltages between 0 (normal) or a value grater than 0 for higher 4154f38fcaSMauro Carvalho Chehabvoltages. 4254f38fcaSMauro Carvalho Chehab 4354f38fcaSMauro Carvalho ChehabReturn Value 4454f38fcaSMauro Carvalho Chehab============ 4554f38fcaSMauro Carvalho Chehab 4654f38fcaSMauro Carvalho ChehabOn success 0 is returned. 4754f38fcaSMauro Carvalho Chehab 4854f38fcaSMauro Carvalho ChehabOn error -1 is returned, and the ``errno`` variable is set 4954f38fcaSMauro Carvalho Chehabappropriately. 5054f38fcaSMauro Carvalho Chehab 5154f38fcaSMauro Carvalho ChehabGeneric error codes are described at the 5254f38fcaSMauro Carvalho Chehab:ref:`Generic Error Codes <gen-errors>` chapter. 53