summaryrefslogtreecommitdiff
path: root/Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst
diff options
context:
space:
mode:
authorRodrigo Vivi <rodrigo.vivi@intel.com>2024-04-02 08:17:13 -0400
committerRodrigo Vivi <rodrigo.vivi@intel.com>2024-04-02 08:17:13 -0400
commit5add703f6acad1c63f8a532b6de56e50d548e904 (patch)
treebe39a82716119cd8b7cf7e2734baf8cd9a80ceb7 /Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst
parent71cdfa8cad300caa7afcbba09776bbc8dcfa9e39 (diff)
parent39cd87c4eb2b893354f3b850f916353f2658ae6f (diff)
Merge drm/drm-next into drm-intel-next
Catching up on 6.9-rc2 Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst')
-rw-r--r--Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst47
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst b/Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst
new file mode 100644
index 000000000000..6d2d1886950b
--- /dev/null
+++ b/Documentation/userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst
@@ -0,0 +1,47 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+.. _GPIO_V2_LINE_SET_VALUES_IOCTL:
+
+*****************************
+GPIO_V2_LINE_SET_VALUES_IOCTL
+*****************************
+
+Name
+====
+
+GPIO_V2_LINE_SET_VALUES_IOCTL - Set the values of requested output lines.
+
+Synopsis
+========
+
+.. c:macro:: GPIO_V2_LINE_SET_VALUES_IOCTL
+
+``int ioctl(int req_fd, GPIO_V2_LINE_SET_VALUES_IOCTL, struct gpio_v2_line_values *values)``
+
+Arguments
+=========
+
+``req_fd``
+ The file descriptor of the GPIO character device, as returned in the
+ :c:type:`request.fd<gpio_v2_line_request>` by gpio-v2-get-line-ioctl.rst.
+
+``values``
+ The :c:type:`line_values<gpio_v2_line_values>` to set with the ``mask`` set
+ to indicate the subset of requested lines to set and ``bits`` set to
+ indicate the new value.
+
+Description
+===========
+
+Set the values of requested output lines.
+
+Only the values of output lines may be set.
+Attempting to set the value of an input line 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.