/* * PS3 RTC Driver * * Copyright 2009 Sony Corporation * * 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; version 2 of the License. * * 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, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h>#include <linux/module.h>#include <linux/platform_device.h>#include <linux/rtc.h> #include <asm/lv1call.h>#include <asm/ps3.h>  static u64 read_rtc(void){	int result;	u64 rtc_val;	u64 tb_val; 	result = lv1_get_rtc(&rtc_val, &tb_val);	BUG_ON(result); 	return rtc_val;} static int ps3_get_time(struct device *dev, struct rtc_time *tm){	rtc_time_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);	return rtc_valid_tm(tm);} static int ps3_set_time(struct device *dev, struct rtc_time *tm){	unsigned long now; 	rtc_tm_to_time(tm, &now);	ps3_os_area_set_rtc_diff(now - read_rtc());	return 0;} static const struct rtc_class_ops ps3_rtc_ops = {	.read_time = ps3_get_time,	.set_time = ps3_set_time,}; static int __init ps3_rtc_probe(struct platform_device *dev){	struct rtc_device *rtc; 	rtc = rtc_device_register("rtc-ps3", &dev->dev, &ps3_rtc_ops,				  THIS_MODULE);	if (IS_ERR(rtc))		return PTR_ERR(rtc); 	platform_set_drvdata(dev, rtc);	return 0;} static int __exit ps3_rtc_remove(struct platform_device *dev){	rtc_device_unregister(platform_get_drvdata(dev));	return 0;} static struct platform_driver ps3_rtc_driver = {	.driver = {		.name = "rtc-ps3",		.owner = THIS_MODULE,	},	.remove = __exit_p(ps3_rtc_remove),}; static int __init ps3_rtc_init(void){	return platform_driver_probe(&ps3_rtc_driver, ps3_rtc_probe);} static void __exit ps3_rtc_fini(void){	platform_driver_unregister(&ps3_rtc_driver);} module_init(ps3_rtc_init);module_exit(ps3_rtc_fini); MODULE_AUTHOR("Sony Corporation");MODULE_LICENSE("GPL");MODULE_DESCRIPTION("ps3 RTC driver");MODULE_ALIAS("platform:rtc-ps3");