1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun.. c:namespace:: RC 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun.. _lirc_set_transmitter_mask: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun******************************* 7*4882a593Smuzhiyunioctl LIRC_SET_TRANSMITTER_MASK 8*4882a593Smuzhiyun******************************* 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunName 11*4882a593Smuzhiyun==== 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunLIRC_SET_TRANSMITTER_MASK - Enables send codes on a given set of transmitters 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunSynopsis 16*4882a593Smuzhiyun======== 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun.. c:macro:: LIRC_SET_TRANSMITTER_MASK 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun``int ioctl(int fd, LIRC_SET_TRANSMITTER_MASK, __u32 *mask)`` 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunArguments 23*4882a593Smuzhiyun========= 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun``fd`` 26*4882a593Smuzhiyun File descriptor returned by open(). 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun``mask`` 29*4882a593Smuzhiyun Mask with channels to enable tx. Channel 0 is the least significant bit. 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunDescription 32*4882a593Smuzhiyun=========== 33*4882a593Smuzhiyun 34*4882a593SmuzhiyunSome IR TX devices have multiple output channels, in such case, 35*4882a593Smuzhiyun:ref:`LIRC_CAN_SET_TRANSMITTER_MASK <LIRC-CAN-SET-TRANSMITTER-MASK>` is 36*4882a593Smuzhiyunreturned via :ref:`LIRC_GET_FEATURES` and this ioctl sets what channels will 37*4882a593Smuzhiyunsend IR codes. 38*4882a593Smuzhiyun 39*4882a593SmuzhiyunThis ioctl enables the given set of transmitters. The first transmitter is 40*4882a593Smuzhiyunencoded by the least significant bit and so on. 41*4882a593Smuzhiyun 42*4882a593SmuzhiyunWhen an invalid bit mask is given, i.e. a bit is set, even though the device 43*4882a593Smuzhiyundoes not have so many transitters, then this ioctl returns the number of 44*4882a593Smuzhiyunavailable transitters and does nothing otherwise. 45*4882a593Smuzhiyun 46*4882a593SmuzhiyunReturn Value 47*4882a593Smuzhiyun============ 48*4882a593Smuzhiyun 49*4882a593SmuzhiyunOn success 0 is returned, on error -1 and the ``errno`` variable is set 50*4882a593Smuzhiyunappropriately. The generic error codes are described at the 51*4882a593Smuzhiyun:ref:`Generic Error Codes <gen-errors>` chapter. 52