1 .. SPDX-License-Identifier: GPL-2.0
2
3 .. _GPIOHANDLE_SET_CONFIG_IOCTL:
4
5 ***************************
6 GPIOHANDLE_SET_CONFIG_IOCTL
7 ***************************
8
9 .. warning::
10 This ioctl is part of chardev_v1.rst and i
11 gpio-v2-line-set-config-ioctl.rst.
12
13 Name
14 ====
15
16 GPIOHANDLE_SET_CONFIG_IOCTL - Update the confi
17
18 Synopsis
19 ========
20
21 .. c:macro:: GPIOHANDLE_SET_CONFIG_IOCTL
22
23 ``int ioctl(int handle_fd, GPIOHANDLE_SET_CONF
24
25 Arguments
26 =========
27
28 ``handle_fd``
29 The file descriptor of the GPIO character
30 :c:type:`request.fd<gpiohandle_request>` b
31
32 ``config``
33 The new :c:type:`configuration<gpiohandle_
34 requested lines.
35
36 Description
37 ===========
38
39 Update the configuration of previously request
40 line or introducing potential glitches.
41
42 The configuration applies to all requested lin
43
44 The same :ref:`gpio-get-linehandle-config-rule
45 :ref:`gpio-get-linehandle-config-support` that
46 lines also apply when updating the line config
47 restriction that a direction flag must be set.
48 configuration, including without a direction f
49 (**EINVAL**).
50
51 The motivating use case for this command is ch
52 bi-directional lines between input and output,
53 generally to move lines seamlessly from one co
54
55 To only change the value of output lines, use
56 gpio-handle-set-line-values-ioctl.rst.
57
58 First added in 5.5.
59
60 Return Value
61 ============
62
63 On success 0.
64
65 On error -1 and the ``errno`` variable is set
66 Common error codes are described in error-code
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