/*
 * Schism Tracker - a cross-platform Impulse Tracker clone
 * copyright (c) 2003-2005 Storlek <storlek@rigelseven.com>
 * copyright (c) 2005-2008 Mrs. Brisby <mrs.brisby@nimh.org>
 * copyright (c) 2009 Storlek & Mrs. Brisby
 * copyright (c) 2010-2012 Storlek
 * URL: http://schismtracker.org/
 *
 * 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.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "headers.h"
#include "util.h"

#include <IOKit/IOKitLib.h>
#include <IOKit/IOReturn.h>
#include <ApplicationServices/ApplicationServices.h>
#include <IOKit/hidsystem/IOHIDLib.h>
#include <IOKit/hidsystem/IOHIDParameter.h>

#define kMyDriversKeyboardClassName     "AppleADBKeyboard"
#define kfnSwitchError                  200
#define kfnAppleMode            0
#define kfntheOtherMode         1

#ifndef kIOHIDFKeyModeKey
#define kIOHIDFKeyModeKey    "HIDFKeyMode"
#endif

int macosx_ibook_fnswitch(int setting)
{
	/* XXX can this be removed? */
	kern_return_t kr;
	mach_port_t mp;
	io_service_t so;
	/*io_name_t sn;*/
	io_connect_t dp;
	io_iterator_t it;
	CFDictionaryRef classToMatch;
	/*CFNumberRef   fnMode;*/
	unsigned int res, dummy;

	kr = IOMasterPort(bootstrap_port, &mp);
	if (kr != KERN_SUCCESS) return -1;

	classToMatch = IOServiceMatching(kIOHIDSystemClass);
	if (classToMatch == NULL) {
		return -1;
	}
	kr = IOServiceGetMatchingServices(mp, classToMatch, &it);
	if (kr != KERN_SUCCESS) return -1;

	so = IOIteratorNext(it);
	IOObjectRelease(it);

	if (!so) return -1;

	kr = IOServiceOpen(so, mach_task_self(), kIOHIDParamConnectType, &dp);
	if (kr != KERN_SUCCESS) return -1;

	kr = IOHIDGetParameter(dp, CFSTR(kIOHIDFKeyModeKey), sizeof(res),
						&res, (IOByteCount *) &dummy);
	if (kr != KERN_SUCCESS) {
		IOServiceClose(dp);
		return -1;
	}

	if (setting == kfnAppleMode || setting == kfntheOtherMode) {
		dummy = setting;
		kr = IOHIDSetParameter(dp, CFSTR(kIOHIDFKeyModeKey),
					&dummy, sizeof(dummy));
		if (kr != KERN_SUCCESS) {
			IOServiceClose(dp);
			return -1;
		}
	}

	IOServiceClose(dp);
	/* old setting... */
	return res;
}
