71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
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/*
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* Copyright (c) 2016 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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/**
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* @file Header where utility code can be found for GPIO drivers
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*/
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#ifndef __GPIO_UTILS_H__
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#define __GPIO_UTILS_H__
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/**
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* @brief Generic function to insert or remove a callback from a callback list
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*
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* @param callbacks A pointer to the original list of callbacks (can be NULL)
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* @param callback A pointer of the callback to insert or remove from the list
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* @param set A boolean indicating insertion or removal of the callback
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*/
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static inline void _gpio_manage_callback(sys_slist_t *callbacks,
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struct gpio_callback *callback,
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bool set)
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{
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__ASSERT(callback, "No callback!");
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__ASSERT(callback->handler, "No callback handler!");
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if (set) {
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sys_slist_prepend(callbacks, &callback->node);
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} else {
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sys_slist_find_and_remove(callbacks, &callback->node);
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}
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}
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/**
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* @brief Generic function to go through and fire callback from a callback list
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*
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* @param list A pointer on the gpio callback list
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* @param port A pointer on the gpio driver instance
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* @param pins The actual pin mask that triggered the interrupt
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*/
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static inline void _gpio_fire_callbacks(sys_slist_t *list,
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struct device *port,
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uint32_t pins)
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{
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struct gpio_callback *cb;
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sys_snode_t *node;
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SYS_SLIST_FOR_EACH_NODE(list, node) {
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cb = (struct gpio_callback *)node;
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if (cb->pin_mask & pins) {
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__ASSERT(cb->handler, "No callback handler!");
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cb->handler(port, cb, pins);
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}
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}
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}
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#endif /* __GPIO_UTILS_H__ */
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