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