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Release 4.12 include/linux/input-polldev.h

Directory: include/linux


 * 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);


Overall Contributors

Dmitry Torokhov11182.22%360.00%
Samu Onkalo2417.78%240.00%
Directory: include/linux
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