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.. SPDX-License-Identifier: GPL-2.0
.. _GPIO_GET_CHIPINFO_IOCTL:
***********************
GPIO_GET_CHIPINFO_IOCTL
***********************
Name
====
GPIO_GET_CHIPINFO_IOCTL - Get the publicly available information for a chip.
Synopsis
========
.. c:macro:: GPIO_GET_CHIPINFO_IOCTL
``int ioctl(int chip_fd, GPIO_GET_CHIPINFO_IOCTL, struct gpiochip_info *info)``
Arguments
=========
``chip_fd``
The file descriptor of the GPIO character device returned by `open()`.
``info``
The :c:type:`chip_info<gpiochip_info>` to be populated.
Description
===========
Gets the publicly available information for a particular GPIO chip.
Return Value
============
On success 0 and ``info`` is populated with the chip info.
On error -1 and the ``errno`` variable is set appropriately.
Common error codes are described in error-codes.rst.
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