73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (C) 2013 The Android Open Source Project
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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 _HARDWARE_VIBRATOR_H
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#define _HARDWARE_VIBRATOR_H
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#include <hardware/hardware.h>
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__BEGIN_DECLS
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#define VIBRATOR_API_VERSION HARDWARE_MODULE_API_VERSION(1,0)
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/**
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* The id of this module
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*/
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#define VIBRATOR_HARDWARE_MODULE_ID "vibrator"
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/**
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* The id of the main vibrator device
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*/
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#define VIBRATOR_DEVICE_ID_MAIN "main_vibrator"
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struct vibrator_device;
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typedef struct vibrator_device {
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/**
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* Common methods of the vibrator device. This *must* be the first member of
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* vibrator_device as users of this structure will cast a hw_device_t to
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* vibrator_device pointer in contexts where it's known the hw_device_t references a
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* vibrator_device.
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*/
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struct hw_device_t common;
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/** Turn on vibrator
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*
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* This function must only be called after the previous timeout has expired or
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* was canceled (through vibrator_off()).
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*
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* @param timeout_ms number of milliseconds to vibrate
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*
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* @return 0 in case of success, negative errno code else
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*/
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int (*vibrator_on)(struct vibrator_device* vibradev, unsigned int timeout_ms);
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/** Turn off vibrator
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*
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* Cancel a previously-started vibration, if any.
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*
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* @return 0 in case of success, negative errno code else
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*/
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int (*vibrator_off)(struct vibrator_device* vibradev);
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} vibrator_device_t;
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static inline int vibrator_open(const struct hw_module_t* module, vibrator_device_t** device)
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{
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return module->methods->open(module, VIBRATOR_DEVICE_ID_MAIN, (struct hw_device_t**)device);
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}
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__END_DECLS
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#endif // _HARDWARE_VIBRATOR_H
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