From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- .../media/rc/lirc-set-rec-carrier-range.rst | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst (limited to 'Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst') diff --git a/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst new file mode 100644 index 000000000..530bc2239 --- /dev/null +++ b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier-range.rst @@ -0,0 +1,49 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC + +.. _lirc_set_rec_carrier_range: + +******************************** +ioctl LIRC_SET_REC_CARRIER_RANGE +******************************** + +Name +==== + +LIRC_SET_REC_CARRIER_RANGE - Set lower bound of the carrier used to modulate +IR receive. + +Synopsis +======== + +.. c:macro:: LIRC_SET_REC_CARRIER_RANGE + +``int ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency)`` + +Arguments +========= + +``fd`` + File descriptor returned by open(). + +``frequency`` + Frequency of the carrier that modulates PWM data, in Hz. + +Description +=========== + +This ioctl sets the upper range of carrier frequency that will be recognized +by the IR receiver. + +.. note:: + + To set a range use :ref:`LIRC_SET_REC_CARRIER_RANGE + ` with the lower bound first and later call + :ref:`LIRC_SET_REC_CARRIER ` with the upper bound. + +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 ` chapter. -- cgit v1.2.3