| Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022 Arm Limited. |
| 3 | * |
| 4 | * This program is free software and is provided to you under the terms of the |
| 5 | * GNU General Public License version 2 as published by the Free Software |
| 6 | * Foundation, and any use by you of this program is subject to the terms |
| 7 | * of such GNU licence. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, you can access it online at |
| 16 | * http://www.gnu.org/licenses/gpl-2.0.html. |
| 17 | * |
| 18 | * SPDX-License-Identifier: GPL-2.0-only |
| 19 | */ |
| 20 | |
| 21 | #ifndef ETHOSU_WATCHDOG_H |
| 22 | #define ETHOSU_WATCHDOG_H |
| 23 | |
| 24 | /**************************************************************************** |
| 25 | * Includes |
| 26 | ****************************************************************************/ |
| 27 | |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/timer.h> |
| 30 | #include <linux/workqueue.h> |
| 31 | |
| 32 | /**************************************************************************** |
| 33 | * Types |
| 34 | ****************************************************************************/ |
| 35 | |
| 36 | struct device; |
| 37 | struct ethosu_watchdog; |
| 38 | |
| 39 | typedef void (*ethosu_watchdog_cb)(struct ethosu_watchdog *wdog); |
| 40 | |
| 41 | struct ethosu_watchdog { |
| 42 | struct device *dev; |
| 43 | ethosu_watchdog_cb callback; |
| 44 | struct timer_list timer; |
| 45 | struct work_struct work; |
| 46 | atomic_t refcount; |
| 47 | }; |
| 48 | |
| 49 | /**************************************************************************** |
| 50 | * Functions |
| 51 | ****************************************************************************/ |
| 52 | |
| 53 | /** |
| 54 | * ethosu_watchdog_init() - Initialize watchdog |
| 55 | * |
| 56 | * Return: 0 on success, else error code. |
| 57 | */ |
| 58 | int ethosu_watchdog_init(struct ethosu_watchdog *wdog, |
| 59 | struct device *dev, |
| 60 | ethosu_watchdog_cb callback); |
| 61 | |
| 62 | /** |
| 63 | * ethosu_watchdog_deinit() - Deinitialize watchdog |
| 64 | */ |
| 65 | void ethosu_watchdog_deinit(struct ethosu_watchdog *wdog); |
| 66 | |
| 67 | /** |
| 68 | * ethosu_watchdog_reset() - Reset watchdog |
| 69 | */ |
| 70 | int ethosu_watchdog_reset(struct ethosu_watchdog *wdog); |
| 71 | |
| 72 | /** |
| 73 | * ethosu_watchdog_inc() - Increment reference count |
| 74 | */ |
| 75 | void ethosu_watchdog_inc(struct ethosu_watchdog *wdog); |
| 76 | |
| 77 | /** |
| 78 | * ethosu_watchdog_dec() - Decrement reference count |
| 79 | */ |
| 80 | void ethosu_watchdog_dec(struct ethosu_watchdog *wdog); |
| 81 | |
| 82 | #endif /* ETHOSU_WATCHDOG_H */ |