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1 | #ifndef _INPUT_POLLDEV_H |
2 | #define _INPUT_POLLDEV_H | |
3 | ||
4 | /* | |
5 | * Copyright (c) 2007 Dmitry Torokhov | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published by | |
9 | * the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/input.h> | |
13 | #include <linux/workqueue.h> | |
14 | ||
15 | /** | |
16 | * struct input_polled_dev - simple polled input device | |
17 | * @private: private driver data | |
18 | * @flush: driver-supplied method that flushes device's state upon | |
19 | * opening (optional) | |
20 | * @poll: driver-supplied method that polls the device and posts | |
21 | * input events (mandatory). | |
22 | * @poll_interval: specifies how often the poll() method shoudl be called. | |
23 | * @input: input device structire associated with the polled device. | |
24 | * Must be properly initialized by the driver (id, name, phys, bits). | |
25 | * | |
26 | * Polled input device provides a skeleton for supporting simple input | |
27 | * devices that do not raise interrupts but have to be periodically | |
28 | * scanned or polled to detect changes in their state. | |
29 | */ | |
30 | struct input_polled_dev { | |
31 | void *private; | |
32 | ||
33 | void (*flush)(struct input_polled_dev *dev); | |
34 | void (*poll)(struct input_polled_dev *dev); | |
35 | unsigned int poll_interval; /* msec */ | |
36 | ||
37 | struct input_dev *input; | |
38 | struct delayed_work work; | |
39 | }; | |
40 | ||
41 | struct input_polled_dev *input_allocate_polled_device(void); | |
42 | void input_free_polled_device(struct input_polled_dev *dev); | |
43 | int input_register_polled_device(struct input_polled_dev *dev); | |
44 | void input_unregister_polled_device(struct input_polled_dev *dev); | |
45 | ||
46 | #endif |