| Dmitry Torokhov | 0dcd807 | 2007-04-29 23:42:45 -0400 | [diff] [blame] | 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 |