rt-thread-official/bsp/allwinner/libraries/drivers/drv_wdt.c

108 lines
2.2 KiB
C

/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-11-15 JasonHu first version
*/
#include <rtthread.h>
#include <rthw.h>
#include <rtdevice.h>
#include <sunxi_hal_watchdog.h>
#define DBG_SECTION_NAME "wdt"
#include <rtdbg.h>
#if defined(RT_USING_WDT) && defined(BSP_USING_WDT)
/* hardware only support (1-16)s */
static rt_uint32_t wdg_timeout = 0;
static rt_err_t wdg_init(rt_watchdog_t *wdt)
{
wdg_timeout = 0;
hal_watchdog_init();
return RT_EOK;
}
static rt_err_t wdg_control(rt_watchdog_t *wdt, int cmd, void *arg)
{
switch (cmd)
{
case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
if (arg)
{
wdg_timeout = *(rt_uint32_t *)arg;
}
else
{
LOG_E("arg is NULL!");
return -RT_EIO;
}
break;
case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
if (arg)
{
*((rt_uint32_t *)arg) = wdg_timeout;
}
else
{
LOG_E("arg is NULL!");
return -RT_EIO;
}
break;
case RT_DEVICE_CTRL_WDT_GET_TIMELEFT:
LOG_E("not support RT_DEVICE_CTRL_WDT_GET_TIMELEFT on this platform!");
if (arg)
{
*((rt_uint32_t *)arg) = 0;
}
else
{
LOG_E("arg is NULL!");
}
return -RT_EIO;
case RT_DEVICE_CTRL_WDT_KEEPALIVE:
hal_watchdog_feed();
break;
case RT_DEVICE_CTRL_WDT_START:
hal_watchdog_start(wdg_timeout);
break;
case RT_DEVICE_CTRL_WDT_STOP:
hal_watchdog_stop(wdg_timeout);
break;
default:
return -RT_EIO;
}
return RT_EOK;
}
static const struct rt_watchdog_ops wdg_pos =
{
wdg_init,
wdg_control,
};
static rt_watchdog_t wdg;
int rt_hw_wdg_init(void)
{
wdg.ops = &wdg_pos;
rt_hw_watchdog_register(&wdg, "wdt", 0, RT_NULL);
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_wdg_init);
void rt_hw_cpu_reset(void)
{
rt_hw_interrupt_disable();
hal_watchdog_start(1);
while(1);
}
MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine);
#endif /* RT_USING_WDT && BSP_USING_WDT */