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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 21:00:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 21:00:51 +0000
commit6d03a247468059b0e59c821ef39e6762d4d6fc30 (patch)
tree17b9c00de2c62e68c965c742cdbc206f77a375da /Documentation/userspace-api/gpio/gpio-handle-set-line-values-ioctl.rst
parentReleasing progress-linux version 6.8.12-1~progress7.99u1. (diff)
downloadlinux-6d03a247468059b0e59c821ef39e6762d4d6fc30.tar.xz
linux-6d03a247468059b0e59c821ef39e6762d4d6fc30.zip
Merging upstream version 6.9.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. SPDX-License-Identifier: GPL-2.0
+
+.. _GPIO_HANDLE_SET_LINE_VALUES_IOCTL:
+
+*********************************
+GPIO_HANDLE_SET_LINE_VALUES_IOCTL
+*********************************
+.. warning::
+ This ioctl is part of chardev_v1.rst and is obsoleted by
+ gpio-v2-line-set-values-ioctl.rst.
+
+Name
+====
+
+GPIO_HANDLE_SET_LINE_VALUES_IOCTL - Set the values of all requested output lines.
+
+Synopsis
+========
+
+.. c:macro:: GPIO_HANDLE_SET_LINE_VALUES_IOCTL
+
+``int ioctl(int handle_fd, GPIO_HANDLE_SET_LINE_VALUES_IOCTL, struct gpiohandle_data *values)``
+
+Arguments
+=========
+
+``handle_fd``
+ The file descriptor of the GPIO character device, as returned in the
+ :c:type:`request.fd<gpiohandle_request>` by gpio-get-linehandle-ioctl.rst.
+
+``values``
+ The :c:type:`line_values<gpiohandle_data>` to set.
+
+Description
+===========
+
+Set the values of all requested output lines.
+
+Only the values of output lines may be set.
+Attempting to set the value of input lines is an error (**EPERM**).
+
+Return Value
+============
+
+On success 0.
+
+On error -1 and the ``errno`` variable is set appropriately.
+Common error codes are described in error-codes.rst.