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// SPDX-License-Identifier: GPL-2.0
/*
* (c) Copyright 2021 Hewlett Packard Enterprise Development LP.
*/
#include <linux/hrtimer.h>
#include <linux/watchdog.h>
#include "watchdog_core.h"
#include "watchdog_pretimeout.h"
static enum hrtimer_restart watchdog_hrtimer_pretimeout(struct hrtimer *timer)
{
struct watchdog_core_data *wd_data;
wd_data = container_of(timer, struct watchdog_core_data, pretimeout_timer);
watchdog_notify_pretimeout(wd_data->wdd);
return HRTIMER_NORESTART;
}
void watchdog_hrtimer_pretimeout_init(struct watchdog_device *wdd)
{
struct watchdog_core_data *wd_data = wdd->wd_data;
hrtimer_init(&wd_data->pretimeout_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
wd_data->pretimeout_timer.function = watchdog_hrtimer_pretimeout;
}
void watchdog_hrtimer_pretimeout_start(struct watchdog_device *wdd)
{
if (!(wdd->info->options & WDIOF_PRETIMEOUT) &&
!watchdog_pretimeout_invalid(wdd, wdd->pretimeout))
hrtimer_start(&wdd->wd_data->pretimeout_timer,
ktime_set(wdd->timeout - wdd->pretimeout, 0),
HRTIMER_MODE_REL);
else
hrtimer_cancel(&wdd->wd_data->pretimeout_timer);
}
void watchdog_hrtimer_pretimeout_stop(struct watchdog_device *wdd)
{
hrtimer_cancel(&wdd->wd_data->pretimeout_timer);
}
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