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0dcd807367
input-polldev provides a skeleton for supporting simple input devices that need to be periodically scanned or polled to detect changes in their state. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
#ifndef _INPUT_POLLDEV_H
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#define _INPUT_POLLDEV_H
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/*
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* Copyright (c) 2007 Dmitry Torokhov
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/input.h>
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#include <linux/workqueue.h>
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/**
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* struct input_polled_dev - simple polled input device
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* @private: private driver data
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* @flush: driver-supplied method that flushes device's state upon
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* opening (optional)
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* @poll: driver-supplied method that polls the device and posts
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* input events (mandatory).
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* @poll_interval: specifies how often the poll() method shoudl be called.
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* @input: input device structire associated with the polled device.
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* Must be properly initialized by the driver (id, name, phys, bits).
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*
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* Polled input device provides a skeleton for supporting simple input
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* devices that do not raise interrupts but have to be periodically
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* scanned or polled to detect changes in their state.
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*/
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struct input_polled_dev {
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void *private;
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void (*flush)(struct input_polled_dev *dev);
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void (*poll)(struct input_polled_dev *dev);
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unsigned int poll_interval; /* msec */
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struct input_dev *input;
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struct delayed_work work;
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};
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struct input_polled_dev *input_allocate_polled_device(void);
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void input_free_polled_device(struct input_polled_dev *dev);
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int input_register_polled_device(struct input_polled_dev *dev);
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void input_unregister_polled_device(struct input_polled_dev *dev);
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#endif
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