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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _HARDWARE_VIBRATOR_H
#define _HARDWARE_VIBRATOR_H
#include <hardware/hardware.h>
__BEGIN_DECLS
#define VIBRATOR_API_VERSION HARDWARE_MODULE_API_VERSION(1,0)
/**
* The id of this module
*/
#define VIBRATOR_HARDWARE_MODULE_ID "vibrator"
/**
* The id of the main vibrator device
*/
#define VIBRATOR_DEVICE_ID_MAIN "main_vibrator"
struct vibrator_device;
typedef struct vibrator_device {
/**
* Common methods of the vibrator device. This *must* be the first member of
* vibrator_device as users of this structure will cast a hw_device_t to
* vibrator_device pointer in contexts where it's known the hw_device_t references a
* vibrator_device.
*/
struct hw_device_t common;
/** Turn on vibrator
*
* What happens when this function is called while the the timeout of a
* previous call has not expired is implementation dependent.
*
* @param timeout_ms number of milliseconds to vibrate
*
* @return 0 in case of success, negative errno code else
*/
int (*vibrator_on)(struct vibrator_device* vibradev, unsigned int timeout_ms);
/** Turn off vibrator
*
* It is not guaranteed that the vibrator will be immediately stopped: the
* behaviour is implementation dependent.
*
* @return 0 in case of success, negative errno code else
*/
int (*vibrator_off)(struct vibrator_device* vibradev);
} vibrator_device_t;
static inline int vibrator_open(const struct hw_module_t* module, vibrator_device_t** device)
{
return module->methods->open(module, VIBRATOR_DEVICE_ID_MAIN, (struct hw_device_t**)device);
}
__END_DECLS
#endif // _HARDWARE_VIBRATOR_H
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