60 lines
1.0 KiB
C
60 lines
1.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* PS3 time and rtc routines.
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*
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* Copyright (C) 2006 Sony Computer Entertainment Inc.
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* Copyright 2006 Sony Corp.
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*/
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/rtc.h>
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#include <asm/firmware.h>
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#include <asm/lv1call.h>
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#include <asm/ps3.h>
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#include "platform.h"
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void __init ps3_calibrate_decr(void)
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{
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int result;
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u64 tmp;
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result = ps3_repository_read_be_tb_freq(0, &tmp);
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BUG_ON(result);
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ppc_tb_freq = tmp;
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ppc_proc_freq = ppc_tb_freq * 40;
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}
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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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time64_t __init ps3_get_boot_time(void)
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{
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return read_rtc() + ps3_os_area_get_rtc_diff();
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}
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static int __init ps3_rtc_init(void)
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{
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struct platform_device *pdev;
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if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
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return -ENODEV;
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pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0);
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return PTR_ERR_OR_ZERO(pdev);
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}
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device_initcall(ps3_rtc_init);
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