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https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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a5ab76da1e
Add the D-Bus API definition and its implementation in the form of a GPIO manager daemon and a companion command-line client as well as some additional configuration and data files (systemd service, example udev configuration, etc.) and test suites. Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Link: https://lore.kernel.org/r/20240812-dbus-v5-4-ead288509217@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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// SPDX-FileCopyrightText: 2023 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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#include <stdlib.h>
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#include "common.h"
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static void find_line_in_chip(gpointer elem, gpointer user_data)
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{
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g_autoptr(GpiodbusObject) line_obj = NULL;
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GpiodbusObject *chip_obj = elem;
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const gchar *name = user_data;
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GpiodbusChip *chip;
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GpiodbusLine *line;
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line_obj = get_line_obj_by_name_for_chip(chip_obj, name);
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if (!line_obj)
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return;
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chip = gpiodbus_object_peek_chip(chip_obj);
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line = gpiodbus_object_peek_line(line_obj);
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g_print("%s %u\n",
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gpiodbus_chip_get_name(chip),
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gpiodbus_line_get_offset(line));
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exit(EXIT_SUCCESS);
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}
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int gpiocli_find_main(int argc, char **argv)
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{
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static const gchar *const summary =
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"Gicen a line name, find the name of the parent chip and offset of the line within that chip.";
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static const gchar *const description =
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"As line names are not guaranteed to be unique, this command finds the first line with given name.";
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g_autolist(GpiodbusObject) objs = NULL;
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g_auto(GStrv) line_name = NULL;
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const GOptionEntry opts[] = {
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{
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.long_name = G_OPTION_REMAINING,
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.flags = G_OPTION_FLAG_NONE,
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.arg = G_OPTION_ARG_STRING_ARRAY,
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.arg_data = &line_name,
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.arg_description = "<line name>",
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},
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{ }
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};
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parse_options(opts, summary, description, &argc, &argv);
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check_manager();
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if (!line_name)
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die_parsing_opts("line name must be specified");
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if (g_strv_length(line_name) != 1)
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die_parsing_opts("only one line can be mapped");
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objs = get_chip_objs(NULL);
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g_list_foreach(objs, find_line_in_chip, line_name[0]);
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/* If we got here, the line was not found. */
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die("line '%s' not found", line_name[0]);
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return EXIT_FAILURE;
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}
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