84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* clock_control.h - public clock controller driver API */
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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 __CLOCK_CONTROL_H__
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#define __CLOCK_CONTROL_H__
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#include <stdint.h>
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#include <stddef.h>
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#include <device.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Clock control API */
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/* Used to select all subsystem of a clock controller */
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#define CLOCK_CONTROL_SUBSYS_ALL NULL
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/**
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* clock_control_subsys_t is a type to identify a clock controller sub-system.
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* Such data pointed is opaque and relevant only to the clock controller
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* driver instance being used.
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*/
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typedef void *clock_control_subsys_t;
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typedef int (*clock_control)(struct device *dev, clock_control_subsys_t sys);
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struct clock_control_driver_api {
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clock_control on;
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clock_control off;
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};
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/**
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* @brief Enable the clock of a sub-system controlled by the device
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* @param dev Pointer to the device structure for the clock controller driver
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* instance
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* @param sys A pointer to an opaque data representing the sub-system
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*/
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static inline int clock_control_on(struct device *dev,
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clock_control_subsys_t sys)
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{
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struct clock_control_driver_api *api;
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api = (struct clock_control_driver_api *)dev->driver_api;
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return api->on(dev, sys);
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}
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/**
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* @brief Disable the clock of a sub-system controlled by the device
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* @param dev Pointer to the device structure for the clock controller driver
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* instance
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* @param sys A pointer to an opaque data representing the sub-system
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*/
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static inline int clock_control_off(struct device *dev,
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clock_control_subsys_t sys)
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{
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struct clock_control_driver_api *api;
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api = (struct clock_control_driver_api *)dev->driver_api;
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return api->off(dev, sys);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CLOCK_CONTROL_H__ */
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