/*
 * Copyright (C) 2013 Sascha Hauer, Pengutronix
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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 <command.h>
#include <common.h>
#include <complete.h>
#include <driver.h>

static int do_devinfo_subtree(struct device_d *dev, int depth)
{
	struct device_d *child;
	struct cdev *cdev;
	int i;

	for (i = 0; i < depth; i++)
		printf("     ");

	printf("`---- %s", dev_name(dev));
	if (!list_empty(&dev->cdevs)) {
		printf("\n");
		list_for_each_entry(cdev, &dev->cdevs, devices_list) {
			for (i = 0; i < depth + 1; i++)
				printf("     ");
			printf("`---- 0x%08llx-0x%08llx: /dev/%s\n",
					cdev->offset,
					cdev->offset + cdev->size - 1,
					cdev->name);
		}
	} else {
		printf("\n");
	}

	if (!list_empty(&dev->children)) {
		device_for_each_child(dev, child) {
			do_devinfo_subtree(child, depth + 1);
		}
	}

	return 0;
}

static int do_devinfo(int argc, char *argv[])
{
	struct device_d *dev;
	struct driver_d *drv;
	struct param_d *param;
	int i;
	struct resource *res;

	if (argc == 1) {
		printf("devices:\n");

		for_each_device(dev) {
			if (!dev->parent)
				do_devinfo_subtree(dev, 0);
		}

		printf("\ndrivers:\n");
		for_each_driver(drv)
			printf("%s\n",drv->name);
	} else {
		dev = get_device_by_name(argv[1]);

		if (!dev) {
			printf("no such device: %s\n",argv[1]);
			return -1;
		}

		printf("resources:\n");
		for (i = 0; i < dev->num_resources; i++) {
			res = &dev->resource[i];
			printf("num   : %d\n", i);
			if (res->name)
				printf("name  : %s\n", res->name);
			printf("start : " PRINTF_CONVERSION_RESOURCE "\nsize  : "
					PRINTF_CONVERSION_RESOURCE "\n",
			       res->start, resource_size(res));
		}

		printf("driver: %s\n", dev->driver ?
				dev->driver->name : "none");

		printf("bus: %s\n\n", dev->bus ?
				dev->bus->name : "none");

		if (dev->info)
			dev->info(dev);

		printf("%s\n", list_empty(&dev->parameters) ?
				"no parameters available" : "Parameters:");

		list_for_each_entry(param, &dev->parameters, list) {
			printf("%16s = %s", param->name, dev_get_param(dev, param->name));
			if (param->info)
				param->info(param);
			printf("\n");
		}
#ifdef CONFIG_OFDEVICE
		if (dev->device_node) {
			printf("\ndevice node: %s\n", dev->device_node->full_name);
			of_print_nodes(dev->device_node, 0);
		}
#endif
	}

	return 0;
}

BAREBOX_CMD_HELP_START(devinfo)
BAREBOX_CMD_HELP_USAGE("devinfo [DEVICE]\n")
BAREBOX_CMD_HELP_SHORT("Output device information.\n")
BAREBOX_CMD_HELP_END

/**
 * @page devinfo_command

If called without arguments, devinfo shows a summary of the known
devices and drivers.

If called with a device path being the argument, devinfo shows more
default information about this device and its parameters.

Example from an MPC5200 based system:

@verbatim
  barebox:/ devinfo /dev/eth0
  base  : 0x1002b000
  size  : 0x00000000
  driver: fec_mpc5xxx

  no info available for eth0
  Parameters:
      ipaddr = 192.168.23.197
     ethaddr = 80:81:82:83:84:86
     gateway = 192.168.23.1
     netmask = 255.255.255.0
    serverip = 192.168.23.2
@endverbatim
 */

BAREBOX_CMD_START(devinfo)
	.cmd		= do_devinfo,
	.usage		= "Show information about devices and drivers.",
	BAREBOX_CMD_HELP(cmd_devinfo_help)
	BAREBOX_CMD_COMPLETE(device_complete)
BAREBOX_CMD_END