/*
|
* Copyright 2017 Google, Inc
|
*
|
* SPDX-License-Identifier: GPL-2.0+
|
*/
|
|
#include <common.h>
|
#include <dm.h>
|
#include <errno.h>
|
#include <wdt.h>
|
#include <dm/device-internal.h>
|
#include <dm/lists.h>
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
int wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
|
{
|
const struct wdt_ops *ops = device_get_ops(dev);
|
|
if (!ops->start)
|
return -ENOSYS;
|
|
return ops->start(dev, timeout_ms, flags);
|
}
|
|
int wdt_stop(struct udevice *dev)
|
{
|
const struct wdt_ops *ops = device_get_ops(dev);
|
|
if (!ops->stop)
|
return -ENOSYS;
|
|
return ops->stop(dev);
|
}
|
|
int wdt_reset(struct udevice *dev)
|
{
|
const struct wdt_ops *ops = device_get_ops(dev);
|
|
if (!ops->reset)
|
return -ENOSYS;
|
|
return ops->reset(dev);
|
}
|
|
int wdt_expire_now(struct udevice *dev, ulong flags)
|
{
|
int ret = 0;
|
const struct wdt_ops *ops;
|
|
debug("WDT Resetting: %lu\n", flags);
|
ops = device_get_ops(dev);
|
if (ops->expire_now) {
|
return ops->expire_now(dev, flags);
|
} else {
|
if (!ops->start)
|
return -ENOSYS;
|
|
ret = ops->start(dev, 1, flags);
|
if (ret < 0)
|
return ret;
|
|
hang();
|
}
|
|
return ret;
|
}
|
|
UCLASS_DRIVER(wdt) = {
|
.id = UCLASS_WDT,
|
.name = "wdt",
|
};
|
