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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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