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/*
* Copyright (c) 2022 Arm Limited.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* 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, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
* SPDX-License-Identifier: GPL-2.0-only
*/
#ifndef ETHOSU_WATCHDOG_H
#define ETHOSU_WATCHDOG_H
/****************************************************************************
* Includes
****************************************************************************/
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
/****************************************************************************
* Types
****************************************************************************/
struct device;
struct ethosu_watchdog;
typedef void (*ethosu_watchdog_cb)(struct ethosu_watchdog *wdog);
struct ethosu_watchdog {
struct device *dev;
ethosu_watchdog_cb callback;
struct timer_list timer;
struct work_struct work;
atomic_t refcount;
};
/****************************************************************************
* Functions
****************************************************************************/
/**
* ethosu_watchdog_init() - Initialize watchdog
*
* Return: 0 on success, else error code.
*/
int ethosu_watchdog_init(struct ethosu_watchdog *wdog,
struct device *dev,
ethosu_watchdog_cb callback);
/**
* ethosu_watchdog_deinit() - Deinitialize watchdog
*/
void ethosu_watchdog_deinit(struct ethosu_watchdog *wdog);
/**
* ethosu_watchdog_reset() - Reset watchdog
*/
int ethosu_watchdog_reset(struct ethosu_watchdog *wdog);
/**
* ethosu_watchdog_inc() - Increment reference count
*/
void ethosu_watchdog_inc(struct ethosu_watchdog *wdog);
/**
* ethosu_watchdog_dec() - Decrement reference count
*/
void ethosu_watchdog_dec(struct ethosu_watchdog *wdog);
#endif /* ETHOSU_WATCHDOG_H */
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