1 .. SPDX-License-Identifier: GFDL-1.1-no-invari 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.fe 2 .. c:namespace:: DTV.fe
3 3
4 .. _FE_GET_FRONTEND: 4 .. _FE_GET_FRONTEND:
5 5
6 *************** 6 ***************
7 FE_GET_FRONTEND 7 FE_GET_FRONTEND
8 *************** 8 ***************
9 9
10 Name 10 Name
11 ==== 11 ====
12 12
13 FE_GET_FRONTEND 13 FE_GET_FRONTEND
14 14
15 .. attention:: This ioctl is deprecated. 15 .. attention:: This ioctl is deprecated.
16 16
17 Synopsis 17 Synopsis
18 ======== 18 ========
19 19
20 .. c:macro:: FE_GET_FRONTEND 20 .. c:macro:: FE_GET_FRONTEND
21 21
22 ``int ioctl(int fd, FE_GET_FRONTEND, struct dv 22 ``int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p)``
23 23
24 Arguments 24 Arguments
25 ========= 25 =========
26 26
27 ``fd`` 27 ``fd``
28 File descriptor returned by :c:func:`open( 28 File descriptor returned by :c:func:`open()`.
29 29
30 ``p`` 30 ``p``
31 Points to parameters for tuning operation. 31 Points to parameters for tuning operation.
32 32
33 Description 33 Description
34 =========== 34 ===========
35 35
36 This ioctl call queries the currently effectiv 36 This ioctl call queries the currently effective frontend parameters. For
37 this command, read-only access to the device i 37 this command, read-only access to the device is sufficient.
38 38
39 Return Value 39 Return Value
40 ============ 40 ============
41 41
42 On success 0 is returned. 42 On success 0 is returned.
43 43
44 On error -1 is returned, and the ``errno`` var 44 On error -1 is returned, and the ``errno`` variable is set
45 appropriately. 45 appropriately.
46 46
47 .. flat-table:: 47 .. flat-table::
48 :header-rows: 0 48 :header-rows: 0
49 :stub-columns: 0 49 :stub-columns: 0
50 50
51 - .. row 1 51 - .. row 1
52 52
53 - ``EINVAL`` 53 - ``EINVAL``
54 54
55 - Maximum supported symbol rate reache 55 - Maximum supported symbol rate reached.
56 56
57 Generic error codes are described at the 57 Generic error codes are described at the
58 :ref:`Generic Error Codes <gen-errors>` chapte 58 :ref:`Generic Error Codes <gen-errors>` chapter.
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