mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 06:40:53 +07:00
0b5f037a4d
Create a real RTC driver for PS3, and unhook the deprecated ppc_md.[gs]et_rtc_time. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
|
|
* 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");
|