blob: 2bfc1f1a3dc50bf8c6ab145899de0b7ac1d2db63 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. _FE_GET_FRONTEND:
***************
FE_GET_FRONTEND
***************
Name
====
FE_GET_FRONTEND
.. attention:: This ioctl is deprecated.
Synopsis
========
.. c:function:: int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p)
:name: FE_GET_FRONTEND
Arguments
=========
``fd``
File descriptor returned by :c:func:`open() <dvb-fe-open>`.
``p``
Points to parameters for tuning operation.
Description
===========
This ioctl call queries the currently effective frontend parameters. 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.
.. flat-table::
:header-rows: 0
:stub-columns: 0
- .. row 1
- ``EINVAL``
- Maximum supported symbol rate reached.
Generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
|
