1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
4 .. _lirc_set_transmitter_mask:
6 *******************************
7 ioctl LIRC_SET_TRANSMITTER_MASK
8 *******************************
13 LIRC_SET_TRANSMITTER_MASK - Enables send codes on a given set of transmitters
18 .. c:macro:: LIRC_SET_TRANSMITTER_MASK
20 ``int ioctl(int fd, LIRC_SET_TRANSMITTER_MASK, __u32 *mask)``
26 File descriptor returned by open().
29 Mask with channels to enable tx. Channel 0 is the least significant bit.
34 Some IR TX devices have multiple output channels, in such case,
35 :ref:`LIRC_CAN_SET_TRANSMITTER_MASK <LIRC-CAN-SET-TRANSMITTER-MASK>` is
36 returned via :ref:`LIRC_GET_FEATURES` and this ioctl sets what channels will
39 This ioctl enables the given set of transmitters. The first transmitter is
40 encoded by the least significant bit and so on.
42 When an invalid bit mask is given, i.e. a bit is set, even though the device
43 does not have so many transitters, then this ioctl returns the number of
44 available transitters and does nothing otherwise.
49 On success 0 is returned, on error -1 and the ``errno`` variable is set
50 appropriately. The generic error codes are described at the
51 :ref:`Generic Error Codes <gen-errors>` chapter.