forked from mirrors/linux
d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
58 lines
2 KiB
C
58 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
#ifndef _INPUT_POLLDEV_H
|
|
#define _INPUT_POLLDEV_H
|
|
|
|
/*
|
|
* Copyright (c) 2007 Dmitry Torokhov
|
|
*/
|
|
|
|
#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
|