From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../media/rc/lirc-set-rec-carrier.rst | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst (limited to 'Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst') diff --git a/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst new file mode 100644 index 000000000..60e321446 --- /dev/null +++ b/Documentation/userspace-api/media/rc/lirc-set-rec-carrier.rst @@ -0,0 +1,46 @@ +.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later +.. c:namespace:: RC + +.. _lirc_set_rec_carrier: + +************************** +ioctl LIRC_SET_REC_CARRIER +************************** + +Name +==== + +LIRC_SET_REC_CARRIER - Set carrier used to modulate IR receive. + +Synopsis +======== + +.. c:macro:: LIRC_SET_REC_CARRIER + +``int ioctl(int fd, LIRC_SET_REC_CARRIER, __u32 *frequency)`` + +Arguments +========= + +``fd`` + File descriptor returned by open(). + +``frequency`` + Frequency of the carrier that modulates PWM data, in Hz. + +Description +=========== + +Set receive carrier used to modulate IR PWM pulses and spaces. + +.. note:: + + If called together with :ref:`LIRC_SET_REC_CARRIER_RANGE`, this ioctl + sets the upper bound frequency that will be recognized by the device. + +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