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0dcd8073 DT |
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 | |
b0aba1e6 SO |
17 | * @private: private driver data. |
18 | * @open: driver-supplied method that prepares device for polling | |
19 | * (enabled the device and maybe flushes device state). | |
20 | * @close: driver-supplied method that is called when device is no | |
21 | * longer being polled. Used to put device into low power mode. | |
0dcd8073 DT |
22 | * @poll: driver-supplied method that polls the device and posts |
23 | * input events (mandatory). | |
24 | * @poll_interval: specifies how often the poll() method shoudl be called. | |
25 | * @input: input device structire associated with the polled device. | |
26 | * Must be properly initialized by the driver (id, name, phys, bits). | |
27 | * | |
28 | * Polled input device provides a skeleton for supporting simple input | |
29 | * devices that do not raise interrupts but have to be periodically | |
30 | * scanned or polled to detect changes in their state. | |
31 | */ | |
32 | struct input_polled_dev { | |
33 | void *private; | |
34 | ||
b0aba1e6 SO |
35 | void (*open)(struct input_polled_dev *dev); |
36 | void (*close)(struct input_polled_dev *dev); | |
0dcd8073 DT |
37 | void (*poll)(struct input_polled_dev *dev); |
38 | unsigned int poll_interval; /* msec */ | |
39 | ||
40 | struct input_dev *input; | |
41 | struct delayed_work work; | |
42 | }; | |
43 | ||
44 | struct input_polled_dev *input_allocate_polled_device(void); | |
45 | void input_free_polled_device(struct input_polled_dev *dev); | |
46 | int input_register_polled_device(struct input_polled_dev *dev); | |
47 | void input_unregister_polled_device(struct input_polled_dev *dev); | |
48 | ||
49 | #endif |