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Diffstat (limited to 'kernel/ethosu_watchdog.h')
-rw-r--r-- | kernel/ethosu_watchdog.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/kernel/ethosu_watchdog.h b/kernel/ethosu_watchdog.h new file mode 100644 index 0000000..d288af4 --- /dev/null +++ b/kernel/ethosu_watchdog.h @@ -0,0 +1,82 @@ +/* + * 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 */ |