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https://github.com/zephyrproject-rtos/zephyr
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2318f02a7a
Simplify driver by using sys_io functions and implement wdt_read_config Change-Id: I119615f1c391daae43a3b8db30319c51167ae05b Signed-off-by: Anas Nashif <anas.nashif@intel.com>
118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
/*
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* Copyright (c) 2015 Intel Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _WDT_H_
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#define _WDT_H_
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#include <stdint.h>
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#define WDT_MODE (BIT(1))
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#define WDT_MODE_OFFSET (1)
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#define WDT_TIMEOUT_MASK (0xF)
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enum wdt_mode {
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WDT_MODE_RESET = 0,
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WDT_MODE_INTERRUPT_RESET
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};
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/**
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* WDT clock cycles for timeout type.
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*/
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enum wdt_clock_timeout_cycles {
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WDT_2_16_CYCLES,
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WDT_2_17_CYCLES,
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WDT_2_18_CYCLES,
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WDT_2_19_CYCLES,
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WDT_2_20_CYCLES,
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WDT_2_21_CYCLES,
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WDT_2_22_CYCLES,
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WDT_2_23_CYCLES,
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WDT_2_24_CYCLES,
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WDT_2_25_CYCLES,
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WDT_2_26_CYCLES,
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WDT_2_27_CYCLES,
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WDT_2_28_CYCLES,
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WDT_2_29_CYCLES,
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WDT_2_30_CYCLES,
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WDT_2_31_CYCLES
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};
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/**
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* WDT configuration struct.
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*/
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struct wdt_config {
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uint32_t timeout;
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enum wdt_mode mode;
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void (*interrupt_fn)(void);
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};
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typedef void (*wdt_api_enable)(void);
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typedef void (*wdt_api_disable)(void);
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typedef int (*wdt_api_set_config)(struct wdt_config *config);
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typedef void (*wdt_api_get_config)(struct wdt_config *config);
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typedef void (*wdt_api_reload)(void);
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struct wdt_driver_api {
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wdt_api_enable enable;
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wdt_api_disable disable;
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wdt_api_get_config get_config;
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wdt_api_set_config set_config;
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wdt_api_reload reload;
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};
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static inline void wdt_enable(struct device *dev)
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{
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struct wdt_driver_api *api;
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api = (struct wdt_driver_api *)dev->driver_api;
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api->enable();
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}
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static inline void wdt_disable(struct device *dev)
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{
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struct wdt_driver_api *api;
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api = (struct wdt_driver_api *)dev->driver_api;
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api->disable();
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}
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static inline void wdt_get_config(struct device *dev, struct wdt_config *config)
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{
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struct wdt_driver_api *api;
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api = (struct wdt_driver_api *)dev->driver_api;
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api->get_config(config);
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}
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static inline int wdt_set_config(struct device *dev, struct wdt_config *config)
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{
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struct wdt_driver_api *api;
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api = (struct wdt_driver_api *)dev->driver_api;
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return api->set_config(config);
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}
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static inline void wdt_reload(struct device *dev)
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{
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struct wdt_driver_api *api;
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api = (struct wdt_driver_api *)dev->driver_api;
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api->reload();
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}
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#endif
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