.. 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` 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.