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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374// SPDX-License-Identifier: GPL-2.0/* * PS3 RTC Driver * * Copyright 2009 Sony Corporation */
#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_time64_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){ ps3_os_area_set_rtc_diff(rtc_tm_to_time64(tm) - 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_allocate_device(&dev->dev); if (IS_ERR(rtc)) return PTR_ERR(rtc);
rtc->ops = &ps3_rtc_ops; rtc->range_max = U64_MAX;
platform_set_drvdata(dev, rtc);
return devm_rtc_register_device(rtc);}
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");