101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* shared_irq - Shared interrupt driver */
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/*
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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 _SHIRQ_H_
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#define _SHIRQ_H_
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#include <autoconf.h>
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typedef int (*isr_t)(struct device *dev);
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/* driver API definition */
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typedef int (*shared_irq_register_t)(struct device *dev,
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isr_t isr_func,
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struct device *isr_dev);
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typedef int (*shared_irq_enable_t)(struct device *dev, struct device *isr_dev);
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typedef int (*shared_irq_disable_t)(struct device *dev, struct device *isr_dev);
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struct shared_irq_driver_api {
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shared_irq_register_t isr_register;
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shared_irq_enable_t enable;
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shared_irq_disable_t disable;
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};
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extern int shared_irq_initialize(struct device *port);
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typedef void (*shared_irq_config_irq_t)(struct device *port);
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struct shared_irq_config {
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uint32_t irq_num;
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shared_irq_config_irq_t config;
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uint32_t client_count;
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};
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struct shared_irq_client {
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struct device *isr_dev;
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isr_t isr_func;
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uint32_t enabled;
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};
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struct shared_irq_runtime {
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struct shared_irq_client client[CONFIG_SHARED_IRQ_NUM_CLIENTS];
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};
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/**
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* @brief Register a device ISR
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* @param dev Pointer to device structure for SHARED_IRQ driver instance.
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* @param isr_func Pointer to the ISR function for the device.
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* @param isr_dev Pointer to the device that will service the interrupt.
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*/
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static inline int shared_irq_isr_register(struct device *dev, isr_t isr_func,
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struct device *isr_dev)
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{
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struct shared_irq_driver_api *api;
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api = (struct shared_irq_driver_api *) dev->driver_api;
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return api->isr_register(dev, isr_func, isr_dev);
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}
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/**
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* @brief Enable ISR for device
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* @param dev Pointer to device structure for SHARED_IRQ driver instance.
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* @param isr_dev Pointer to the device that will service the interrupt.
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*/
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static inline int shared_irq_enable(struct device *dev, struct device *isr_dev)
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{
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struct shared_irq_driver_api *api;
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api = (struct shared_irq_driver_api *) dev->driver_api;
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return api->enable(dev, isr_dev);
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}
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/**
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* @brief Disable ISR for device
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* @param dev Pointer to device structure for SHARED_IRQ driver instance.
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* @param isr_dev Pointer to the device that will service the interrupt.
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*/
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static inline int shared_irq_disable(struct device *dev, struct device *isr_dev)
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{
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struct shared_irq_driver_api *api;
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api = (struct shared_irq_driver_api *) dev->driver_api;
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return api->disable(dev, isr_dev);
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}
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#endif /* _SHARED_IRQ_H_ */
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