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59 lines
1.0 KiB
59 lines
1.0 KiB
// 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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