46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2020 - 2023 Allwinner Technology Co.,Ltd. All rights reserved. */
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/*
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* Allwinner's Common Helper Functions
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*
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* Copyright (c) 2023, Martin <wuyan@allwinnertech.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef __SUNXI_COMMON_H__
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#define __SUNXI_COMMON_H__
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#include <sunxi-log.h>
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#include <sunxi-bitops.h>
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#include <linux/timekeeping.h>
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static inline s64 get_elapsed_time_ns(void)
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{
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static struct timespec64 old; /* the initial value is 0 */
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struct timespec64 now;
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struct timespec64 diff;
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ktime_get_real_ts64(&now);
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if (timespec64_to_ns(&old) == 0) /* first run? */
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old = now;
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diff = timespec64_sub(now, old);
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old = now;
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return timespec64_to_ns(&diff);
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}
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#define get_elapsed_time_us() (get_elapsed_time_ns() / 1000)
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#define get_elapsed_time_ms() (get_elapsed_time_us() / 1000)
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#endif /* __SUNXI_COMMON_H__ */
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