4 * Copyright 2009 Sony Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program.
17 * If not, see <http://www.gnu.org/licenses/>.
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/platform_device.h>
23 #include <linux/rtc.h>
25 #include <asm/lv1call.h>
29 static u64
read_rtc(void)
35 result
= lv1_get_rtc(&rtc_val
, &tb_val
);
41 static int ps3_get_time(struct device
*dev
, struct rtc_time
*tm
)
43 rtc_time_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm
);
44 return rtc_valid_tm(tm
);
47 static int ps3_set_time(struct device
*dev
, struct rtc_time
*tm
)
51 rtc_tm_to_time(tm
, &now
);
52 ps3_os_area_set_rtc_diff(now
- read_rtc());
56 static const struct rtc_class_ops ps3_rtc_ops
= {
57 .read_time
= ps3_get_time
,
58 .set_time
= ps3_set_time
,
61 static int __init
ps3_rtc_probe(struct platform_device
*dev
)
63 struct rtc_device
*rtc
;
65 rtc
= devm_rtc_device_register(&dev
->dev
, "rtc-ps3", &ps3_rtc_ops
,
70 platform_set_drvdata(dev
, rtc
);
74 static struct platform_driver ps3_rtc_driver
= {
81 module_platform_driver_probe(ps3_rtc_driver
, ps3_rtc_probe
);
83 MODULE_AUTHOR("Sony Corporation");
84 MODULE_LICENSE("GPL");
85 MODULE_DESCRIPTION("ps3 RTC driver");
86 MODULE_ALIAS("platform:rtc-ps3");