Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
50 lines
851 B
ReStructuredText
50 lines
851 B
ReStructuredText
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
|
|
.. c:namespace:: DTV.fe
|
|
|
|
.. _FE_READ_BER:
|
|
|
|
***********
|
|
FE_READ_BER
|
|
***********
|
|
|
|
Name
|
|
====
|
|
|
|
FE_READ_BER
|
|
|
|
.. attention:: This ioctl is deprecated.
|
|
|
|
Synopsis
|
|
========
|
|
|
|
.. c:macro:: FE_READ_BER
|
|
|
|
``int ioctl(int fd, FE_READ_BER, uint32_t *ber)``
|
|
|
|
Arguments
|
|
=========
|
|
|
|
``fd``
|
|
File descriptor returned by :c:func:`open()`.
|
|
|
|
``ber``
|
|
The bit error rate is stored into \*ber.
|
|
|
|
Description
|
|
===========
|
|
|
|
This ioctl call returns the bit error rate for the signal currently
|
|
received/demodulated by the front-end. For this command, read-only
|
|
access to the device is sufficient.
|
|
|
|
Return Value
|
|
============
|
|
|
|
On success 0 is returned.
|
|
|
|
On error -1 is returned, and the ``errno`` variable is set
|
|
appropriately.
|
|
|
|
Generic error codes are described at the
|
|
:ref:`Generic Error Codes <gen-errors>` chapter.
|