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73 lines
1.4 KiB
73 lines
1.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* PS3 RTC Driver |
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* |
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* Copyright 2009 Sony Corporation |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/rtc.h> |
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#include <asm/lv1call.h> |
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#include <asm/ps3.h> |
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static u64 read_rtc(void) |
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{ |
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int result; |
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u64 rtc_val; |
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u64 tb_val; |
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result = lv1_get_rtc(&rtc_val, &tb_val); |
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BUG_ON(result); |
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return rtc_val; |
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} |
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static int ps3_get_time(struct device *dev, struct rtc_time *tm) |
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{ |
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rtc_time64_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm); |
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return 0; |
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} |
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static int ps3_set_time(struct device *dev, struct rtc_time *tm) |
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{ |
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ps3_os_area_set_rtc_diff(rtc_tm_to_time64(tm) - read_rtc()); |
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return 0; |
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} |
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static const struct rtc_class_ops ps3_rtc_ops = { |
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.read_time = ps3_get_time, |
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.set_time = ps3_set_time, |
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}; |
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static int __init ps3_rtc_probe(struct platform_device *dev) |
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{ |
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struct rtc_device *rtc; |
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rtc = devm_rtc_allocate_device(&dev->dev); |
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if (IS_ERR(rtc)) |
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return PTR_ERR(rtc); |
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rtc->ops = &ps3_rtc_ops; |
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rtc->range_max = U64_MAX; |
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platform_set_drvdata(dev, rtc); |
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return devm_rtc_register_device(rtc); |
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} |
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static struct platform_driver ps3_rtc_driver = { |
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.driver = { |
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.name = "rtc-ps3", |
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}, |
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}; |
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module_platform_driver_probe(ps3_rtc_driver, ps3_rtc_probe); |
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MODULE_AUTHOR("Sony Corporation"); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("ps3 RTC driver"); |
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MODULE_ALIAS("platform:rtc-ps3");
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