/* * 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 0; } 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 = devm_rtc_device_register(&dev->dev, "rtc-ps3", &ps3_rtc_ops, THIS_MODULE); if (IS_ERR(rtc)) return PTR_ERR(rtc); platform_set_drvdata(dev, rtc); return 0; } static struct platform_driver ps3_rtc_driver = { .driver = { .name = "rtc-ps3", }, }; module_platform_driver_probe(ps3_rtc_driver, ps3_rtc_probe); MODULE_AUTHOR("Sony Corporation"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("ps3 RTC driver"); MODULE_ALIAS("platform:rtc-ps3");