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/*
* File : drv_wdt.c
* This file is part of GK710X BSP for RT-Thread distribution.
*
* Copyright (c) 2017 GOKE Microelectronics Co., Ltd.
* All rights reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Visit http://www.goke.com to get contact with Goke.
*
* Change Logs:
* Date Author Notes
*/
#include "drv_wdt.h"
#include <rtdef.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <drivers/watchdog.h>
#include "gtypes.h"
#include "gd_wdog.h"
#include "gd_timer.h"
#include "platform.h"
typedef enum
{
RESTENABLE = 0x4,
INTERRUPTENABLE = 0x2,
}wdt_enable_mode;
static rt_uint32_t heartbeat = 0;
static rt_err_t gk_wdt_start(int mode)
{
rt_err_t ret = RT_EOK;
wdt_enable_mode wdt_mode = RESTENABLE;
ret = GD_Wdog_Disable();
if (ret != RT_EOK)
{
rt_kprintf("GD_Wdog_Disable error!\n");
return RT_ERROR;
}
if ((mode == RESTENABLE) || (mode == INTERRUPTENABLE))
{
wdt_mode = mode;
}
ret = GD_Wdog_Enable(wdt_mode);
if (ret != RT_EOK)
{
rt_kprintf("GD_Wdog_Enable error!\n");
return RT_ERROR;
}
return ret;
}
static rt_err_t gk_wdt_keepalive(void)
{
rt_err_t ret = RT_EOK;
ret = GD_Wdog_ClrTimeout();
if (ret != GD_OK)
{
rt_kprintf("GD_Wdog_ClrTimeout error!\n");
return RT_ERROR;
}
return ret;
}
static rt_uint32_t gk_wdt_get_timeleft(void)
{
GERR index = GD_OK;
rt_uint32_t second = 0;
index = GD_Wdog_GetValue();
if (index < GD_OK )
{
rt_kprintf("GD_Wdog_GetValue error!\n");
return RT_ERROR;
}
second = index/GD_GET_APB_ClkHz();
return second;
}
static rt_err_t gk_wdt_set_timeout(rt_uint32_t second)
{
rt_err_t ret = RT_EOK;
rt_uint32_t index = 0;
index = second * GD_GET_APB_ClkHz();
ret = GD_Wdog_LoadValue(index);
if (ret != GD_OK)
{
rt_kprintf("GD_Wdog_LoadValue error!\n");
return RT_ERROR;
}
return ret;
}
static rt_err_t gk_watchdog_init(rt_watchdog_t *wdt)
{
struct wdt_driver *wdt_drv = wdt->parent.user_data;
if (wdt_drv->in_use) return -RT_EBUSY;
GD_Wdog_Init();
return RT_EOK;
}
static rt_err_t gk_watchdog_ctrl(rt_watchdog_t *wdt, int cmd, void *arg)
{
rt_uint32_t val;
int mode;
switch (cmd)
{
case RT_DEVICE_CTRL_WDT_START:
mode = *((int *)(arg));
gk_wdt_start(mode);
break;
case RT_DEVICE_CTRL_WDT_STOP:
GD_Wdog_Disable();
break;
case RT_DEVICE_CTRL_WDT_KEEPALIVE:
gk_wdt_keepalive();
break;
case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
heartbeat = *((rt_uint32_t *)(arg));
gk_wdt_set_timeout(heartbeat);
break;
case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
arg = &heartbeat;
break;
case RT_DEVICE_CTRL_WDT_GET_TIMELEFT:
val = gk_wdt_get_timeleft();
arg = &val;
break;
default:
return -RT_EIO;
}
return RT_EOK;
}
struct rt_watchdog_ops gk_watchdog_ops = {
.init = &gk_watchdog_init, .control = &gk_watchdog_ctrl,
};
int gk_wdt_probe(void *priv_data)
{
rt_watchdog_t *wdt_dev;
struct wdt_driver *wdt_drv;
wdt_drv = (struct wdt_driver *)rt_malloc(sizeof(struct wdt_driver));
rt_memset(wdt_drv, 0, sizeof(struct wdt_driver));
wdt_dev = (rt_watchdog_t *)rt_malloc(sizeof(rt_watchdog_t));
if (wdt_dev == RT_NULL)
{
rt_kprintf("ERROR: %s rt_watchdog_t malloc failed\n", __func__);
}
wdt_dev->ops = &gk_watchdog_ops;
rt_hw_watchdog_register(wdt_dev, "gk_wdt", RT_DEVICE_OFLAG_RDWR, wdt_drv);
return 0;
}
int gk_wdt_exit(void *priv_data) { return 0; }
struct gk_platform_driver wdt_driver_ops = {
.name = "wdt", .probe = gk_wdt_probe, .remove = gk_wdt_exit,
};
void rt_hw_wdt_init(void)
{
gk_platform_driver_init(&wdt_driver_ops);
}
void gk_wdt_test(int timeout, int mode)
{
rt_device_t wdt_dev;
wdt_dev = rt_device_find("gk_wdt");
if (!wdt_dev)
{
rt_kprintf("cann't find the wdt dev\n");
}
rt_device_open(wdt_dev, 0);
rt_device_control(wdt_dev, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
rt_device_control(wdt_dev, RT_DEVICE_CTRL_WDT_START, &mode);
rt_kprintf("system shall reboot in %d seconds.\n", timeout);
for (; timeout > 0; timeout--)
{
rt_kprintf("kicked %d\n", timeout);
rt_thread_delay(RT_TICK_PER_SECOND);
}
}
#ifdef RT_USING_WDT
#ifdef RT_USING_FINSH
#include <finsh.h>
FINSH_FUNCTION_EXPORT(gk_wdt_test, enable wdt);
#endif
#endif
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