/*
 * detect.c - detect devices command
 *
 * Copyright (c) 2013 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */
#include <common.h>
#include <command.h>
#include <complete.h>
#include <driver.h>
#include <getopt.h>
#include <errno.h>

static int do_detect(int argc, char *argv[])
{
	struct device_d *dev;
	int opt, i, ret;
	int option_list = 0;
	int option_error = 0;
	int option_all = 0;

	while ((opt = getopt(argc, argv, "ela")) > 0) {
		switch (opt) {
		case 'l':
			option_list = 1;
			break;
		case 'e':
			option_error = 1;
			break;
		case 'a':
			option_all = 1;
			break;
		default:
			return COMMAND_ERROR_USAGE;
		}
	}

	if (option_list) {
		for_each_device(dev) {
			if (dev->detect)
				printf("%s\n", dev_name(dev));
		}
		return 0;
	}

	if (option_all) {
		for_each_device(dev) {
			ret = device_detect(dev);
			if (ret && ret != -ENOSYS && option_error)
				return ret;
		}
		return 0;
	}

	if (argc == optind)
		return COMMAND_ERROR_USAGE;

	for (i = optind; i < argc; i++) {
		dev = get_device_by_name(argv[i]);
		if (!dev)
			return -ENODEV;
		ret = device_detect(dev);
		if (ret && option_error)
			return ret;
	}

	return 0;
}

BAREBOX_CMD_HELP_START(detect)
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT ("-l",  "list detectable devices")
BAREBOX_CMD_HELP_OPT ("-e",  "bail out if one device fails to detect")
BAREBOX_CMD_HELP_OPT ("-a",  "detect all devices")
BAREBOX_CMD_HELP_END

BAREBOX_CMD_START(detect)
	.cmd		= do_detect,
	BAREBOX_CMD_DESC("detect devices")
	BAREBOX_CMD_OPTS("[-lea] [devices]")
	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
	BAREBOX_CMD_COMPLETE(device_complete)
	BAREBOX_CMD_HELP(cmd_detect_help)
BAREBOX_CMD_END
