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1.. SPDX-License-Identifier: GPL-2.02 3.. _GPIO_V2_GET_LINEINFO_IOCTL:4 5**************************6GPIO_V2_GET_LINEINFO_IOCTL7**************************8 9Name10====11 12GPIO_V2_GET_LINEINFO_IOCTL - Get the publicly available information for a line.13 14Synopsis15========16 17.. c:macro:: GPIO_V2_GET_LINEINFO_IOCTL18 19``int ioctl(int chip_fd, GPIO_V2_GET_LINEINFO_IOCTL, struct gpio_v2_line_info *info)``20 21Arguments22=========23 24``chip_fd``25 The file descriptor of the GPIO character device returned by `open()`.26 27``info``28 The :c:type:`line_info<gpio_v2_line_info>` to be populated, with the29 ``offset`` field set to indicate the line to be collected.30 31Description32===========33 34Get the publicly available information for a line.35 36This information is available independent of whether the line is in use.37 38.. note::39 The line info does not include the line value.40 41 The line must be requested using gpio-v2-get-line-ioctl.rst to access its42 value.43 44Return Value45============46 47On success 0 and ``info`` is populated with the chip info.48 49On error -1 and the ``errno`` variable is set appropriately.50Common error codes are described in error-codes.rst.51