/**
 * Copyright (c) 2012 Anup Patel.
 * All rights reserved.
 *
 * 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, 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.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * @file cmd_input.c
 * @author Anup Patel (anup@brainfault.org)
 * @brief Implementation of input command
 */

#include <vmm_error.h>
#include <vmm_stdio.h>
#include <vmm_devtree.h>
#include <vmm_modules.h>
#include <vmm_cmdmgr.h>
#include <drv/input.h>
#include <libs/stringlib.h>

#define MODULE_DESC			"Command input"
#define MODULE_AUTHOR			"Anup Patel"
#define MODULE_LICENSE			"GPL"
#define MODULE_IPRIORITY		0
#define	MODULE_INIT			cmd_input_init
#define	MODULE_EXIT			cmd_input_exit

static void cmd_input_usage(struct vmm_chardev *cdev)
{
	vmm_cprintf(cdev, "Usage:\n");
	vmm_cprintf(cdev, "   input help\n");
	vmm_cprintf(cdev, "   input devices\n");
	vmm_cprintf(cdev, "   input handlers\n");
}

static int cmd_input_devices_iter(struct input_dev *idev, void *data)
{
	char id[27];
	struct vmm_chardev *cdev = data;

	vmm_snprintf(id, sizeof(id),
		     "0x%02x:0x%02x:0x%02x:0x%04x",
		     idev->id.bustype, idev->id.vendor,
		     idev->id.product, idev->id.version);
	vmm_cprintf(cdev, " %-18s %-32s %-27s\n",
		    idev->phys, idev->name, id);

	return VMM_OK;
}

static void cmd_input_devices(struct vmm_chardev *cdev)
{
	vmm_cprintf(cdev, "----------------------------------------"
			  "----------------------------------------\n");
	vmm_cprintf(cdev, " %-18s %-32s %-27s\n",
			  "Phys", "Name", "Bus:Vendor:Product:Version");
	vmm_cprintf(cdev, "----------------------------------------"
			  "----------------------------------------\n");
	input_iterate_device(NULL, cdev, cmd_input_devices_iter);
	vmm_cprintf(cdev, "----------------------------------------"
			  "----------------------------------------\n");
}

static void cmd_input_handlers(struct vmm_chardev *cdev)
{
	int num, count;
	struct input_handler *ihnd;

	vmm_cprintf(cdev, "----------------------------------------"
			  "----------------------------------------\n");
	vmm_cprintf(cdev, " %-10s %-67s\n",
			  "Num", "Name");
	vmm_cprintf(cdev, "----------------------------------------"
			  "----------------------------------------\n");
	count = input_count_handler();
	for (num = 0; num < count; num++) {
		ihnd = input_get_handler(num);
		vmm_cprintf(cdev, " %-10d %-67s\n", num, ihnd->name);
	}

	vmm_cprintf(cdev, "----------------------------------------"
			  "----------------------------------------\n");
}

static int cmd_input_exec(struct vmm_chardev *cdev, int argc, char **argv)
{
	if (argc == 2) {
		if (strcmp(argv[1], "help") == 0) {
			cmd_input_usage(cdev);
			return VMM_OK;
		} else if (strcmp(argv[1], "devices") == 0) {
			cmd_input_devices(cdev);
			return VMM_OK;
		} else if (strcmp(argv[1], "handlers") == 0) {
			cmd_input_handlers(cdev);
			return VMM_OK;
		}
	}
	cmd_input_usage(cdev);
	return VMM_EFAIL;
}

static struct vmm_cmd cmd_input = {
	.name = "input",
	.desc = "input device commands",
	.usage = cmd_input_usage,
	.exec = cmd_input_exec,
};

static int __init cmd_input_init(void)
{
	return vmm_cmdmgr_register_cmd(&cmd_input);
}

static void __exit cmd_input_exit(void)
{
	vmm_cmdmgr_unregister_cmd(&cmd_input);
}

VMM_DECLARE_MODULE(MODULE_DESC,
			MODULE_AUTHOR,
			MODULE_LICENSE,
			MODULE_IPRIORITY,
			MODULE_INIT,
			MODULE_EXIT);
