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1.. SPDX-License-Identifier: GPL-2.02 3.. _GPIO_V2_LINE_SET_VALUES_IOCTL:4 5*****************************6GPIO_V2_LINE_SET_VALUES_IOCTL7*****************************8 9Name10====11 12GPIO_V2_LINE_SET_VALUES_IOCTL - Set the values of requested output lines.13 14Synopsis15========16 17.. c:macro:: GPIO_V2_LINE_SET_VALUES_IOCTL18 19``int ioctl(int req_fd, GPIO_V2_LINE_SET_VALUES_IOCTL, struct gpio_v2_line_values *values)``20 21Arguments22=========23 24``req_fd``25 The file descriptor of the GPIO character device, as returned in the26 :c:type:`request.fd<gpio_v2_line_request>` by gpio-v2-get-line-ioctl.rst.27 28``values``29 The :c:type:`line_values<gpio_v2_line_values>` to set with the ``mask`` set30 to indicate the subset of requested lines to set and ``bits`` set to31 indicate the new value.32 33Description34===========35 36Set the values of requested output lines.37 38The values set are logical, indicating if the line is to be active or inactive.39The ``GPIO_V2_LINE_FLAG_ACTIVE_LOW`` flag controls the mapping between logical40values (active/inactive) and physical values (high/low).41If ``GPIO_V2_LINE_FLAG_ACTIVE_LOW`` is not set then active is high and inactive42is low. If ``GPIO_V2_LINE_FLAG_ACTIVE_LOW`` is set then active is low and43inactive is high.44 45Only the values of output lines may be set.46Attempting to set the value of an input line is an error (**EPERM**).47 48Return Value49============50 51On success 0.52 53On error -1 and the ``errno`` variable is set appropriately.54Common error codes are described in error-codes.rst.55