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#ifndef _INPUT_POLLDEV_H
#define _INPUT_POLLDEV_H
/*
* Copyright (c) 2007 Dmitry Torokhov
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
#include <linux/input.h>
#include <linux/workqueue.h>
/**
* struct input_polled_dev - simple polled input device
* @private: private driver data.
* @open: driver-supplied method that prepares device for polling
* (enabled the device and maybe flushes device state).
* @close: driver-supplied method that is called when device is no
* longer being polled. Used to put device into low power mode.
* @poll: driver-supplied method that polls the device and posts
* input events (mandatory).
* @poll_interval: specifies how often the poll() method should be called.
* Defaults to 500 msec unless overridden when registering the device.
* @poll_interval_max: specifies upper bound for the poll interval.
* Defaults to the initial value of @poll_interval.
* @poll_interval_min: specifies lower bound for the poll interval.
* Defaults to 0.
* @input: input device structure associated with the polled device.
* Must be properly initialized by the driver (id, name, phys, bits).
*
* Polled input device provides a skeleton for supporting simple input
* devices that do not raise interrupts but have to be periodically
* scanned or polled to detect changes in their state.
*/
struct input_polled_dev {
void *private;
void (*open)(struct input_polled_dev *dev);
void (*close)(struct input_polled_dev *dev);
void (*poll)(struct input_polled_dev *dev);
unsigned int poll_interval; /* msec */
unsigned int poll_interval_max; /* msec */
unsigned int poll_interval_min; /* msec */
struct input_dev *input;
/* private: */
struct delayed_work work;
bool devres_managed;
};
struct input_polled_dev *input_allocate_polled_device(void);
struct input_polled_dev *devm_input_allocate_polled_device(struct device *dev);
void input_free_polled_device(struct input_polled_dev *dev);
int input_register_polled_device(struct input_polled_dev *dev);
void input_unregister_polled_device(struct input_polled_dev *dev);
#endif