/*
 * Copyright (c) 2022, Artinchip Technology Co., Ltd
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <aic_core.h>
#include "sys_freq.h"

void aic_udelay(u32 us)
{
    uint64_t start = aic_get_ticks();
    u32 cnt = us * (drv_get_sys_freq() / 1000000U);

    while (1) {
        uint64_t cur = aic_get_ticks();

        if (start > cur) {
            if ((start - cur) >= cnt)
                break;
        } else {
            if (cur - start >= cnt)
                break;
        }
    }
}

void aic_mdelay(u32 ms)
{
    aic_udelay(ms * 1000);
}

u64 aic_get_ticks(void)
{
    return csi_clint_get_value();
}

u64 aic_get_time_us(void)
{
    u64 cnt = (drv_get_sys_freq() / 1000000U);

    return (aic_get_ticks() / cnt);
}

u64 aic_get_time_ms(void)
{
    return aic_get_time_us() / 1000;
}

u64 aic_get_time_us64(void)
{
  u64 us_cnt = drv_get_sys_freq() / 1000000U;

  return (u64)(aic_get_ticks() / us_cnt);;
}

u64 aic_get_time_ms64(void)
{
  return aic_get_time_us64() / 1000;
}

#ifdef KERNEL_RTTHREAD
#include <rtthread.h>

void rt_hw_us_delay(rt_uint32_t us)
{
    aic_udelay(us);
}

#endif