69 lines
1.4 KiB
ReStructuredText
69 lines
1.4 KiB
ReStructuredText
|
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
|
||
|
|
.. c:namespace:: DTV.fe
|
||
|
|
|
||
|
|
.. _FE_SET_FRONTEND:
|
||
|
|
|
||
|
|
***************
|
||
|
|
FE_SET_FRONTEND
|
||
|
|
***************
|
||
|
|
|
||
|
|
.. attention:: This ioctl is deprecated.
|
||
|
|
|
||
|
|
Name
|
||
|
|
====
|
||
|
|
|
||
|
|
FE_SET_FRONTEND
|
||
|
|
|
||
|
|
Synopsis
|
||
|
|
========
|
||
|
|
|
||
|
|
.. c:macro:: FE_SET_FRONTEND
|
||
|
|
|
||
|
|
``int ioctl(int fd, FE_SET_FRONTEND, struct dvb_frontend_parameters *p)``
|
||
|
|
|
||
|
|
Arguments
|
||
|
|
=========
|
||
|
|
|
||
|
|
``fd``
|
||
|
|
File descriptor returned by :c:func:`open()`.
|
||
|
|
|
||
|
|
``p``
|
||
|
|
Points to parameters for tuning operation.
|
||
|
|
|
||
|
|
Description
|
||
|
|
===========
|
||
|
|
|
||
|
|
This ioctl call starts a tuning operation using specified parameters.
|
||
|
|
The result of this call will be successful if the parameters were valid
|
||
|
|
and the tuning could be initiated. The result of the tuning operation in
|
||
|
|
itself, however, will arrive asynchronously as an event (see
|
||
|
|
documentation for :ref:`FE_GET_EVENT` and
|
||
|
|
FrontendEvent.) If a new :ref:`FE_SET_FRONTEND`
|
||
|
|
operation is initiated before the previous one was completed, the
|
||
|
|
previous operation will be aborted in favor of the new one. This command
|
||
|
|
requires read/write access to the device.
|
||
|
|
|
||
|
|
Return Value
|
||
|
|
============
|
||
|
|
|
||
|
|
On success 0 is returned.
|
||
|
|
|
||
|
|
On error -1 is returned, and the ``errno`` variable is set
|
||
|
|
appropriately.
|
||
|
|
|
||
|
|
.. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
|
||
|
|
|
||
|
|
.. flat-table::
|
||
|
|
:header-rows: 0
|
||
|
|
:stub-columns: 0
|
||
|
|
:widths: 1 16
|
||
|
|
|
||
|
|
- .. row 1
|
||
|
|
|
||
|
|
- ``EINVAL``
|
||
|
|
|
||
|
|
- Maximum supported symbol rate reached.
|
||
|
|
|
||
|
|
Generic error codes are described at the
|
||
|
|
:ref:`Generic Error Codes <gen-errors>` chapter.
|