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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2017 Google, Inc
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <wdt.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
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;
}
static int wdt_post_bind(struct udevice *dev)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
struct wdt_ops *ops = (struct wdt_ops *)device_get_ops(dev);
static int reloc_done;
if (!reloc_done) {
if (ops->start)
ops->start += gd->reloc_off;
if (ops->stop)
ops->stop += gd->reloc_off;
if (ops->reset)
ops->reset += gd->reloc_off;
if (ops->expire_now)
ops->expire_now += gd->reloc_off;
reloc_done++;
}
#endif
return 0;
}
UCLASS_DRIVER(wdt) = {
.id = UCLASS_WDT,
.name = "watchdog",
.flags = DM_UC_FLAG_SEQ_ALIAS,
.post_bind = wdt_post_bind,
};
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