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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst')
-rw-r--r-- | Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst b/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst new file mode 100644 index 000000000..be5321c4a --- /dev/null +++ b/Documentation/userspace-api/media/rc/lirc-set-wideband-receiver.rst @@ -0,0 +1,56 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC + +.. _lirc_set_wideband_receiver: + +******************************** +ioctl LIRC_SET_WIDEBAND_RECEIVER +******************************** + +Name +==== + +LIRC_SET_WIDEBAND_RECEIVER - enable wide band receiver. + +Synopsis +======== + +.. c:macro:: LIRC_SET_WIDEBAND_RECEIVER + +``int ioctl(int fd, LIRC_SET_WIDEBAND_RECEIVER, __u32 *enable)`` + +Arguments +========= + +``fd`` + File descriptor returned by open(). + +``enable`` + enable = 1 means enable wideband receiver, enable = 0 means disable + wideband receiver. + +Description +=========== + +Some receivers are equipped with special wide band receiver which is +intended to be used to learn output of existing remote. This ioctl +allows enabling or disabling it. + +This might be useful of receivers that have otherwise narrow band receiver +that prevents them to be used with some remotes. Wide band receiver might +also be more precise. On the other hand its disadvantage it usually +reduced range of reception. + +.. note:: + + Wide band receiver might be implictly enabled if you enable + carrier reports. In that case it will be disabled as soon as you disable + carrier reports. Trying to disable wide band receiver while carrier + reports are active will do nothing. + +Return Value +============ + +On success 0 is returned, on error -1 and the ``errno`` variable is set +appropriately. The generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter. |