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author | Dmitry Torokhov <dtor@insightbb.com> | 2007-04-29 23:42:45 -0400 |
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committer | Dmitry Torokhov <dtor@insightbb.com> | 2007-04-29 23:42:45 -0400 |
commit | 0dcd8073673115eeb67343787f244905f62532f2 (patch) | |
tree | fd419ac046696d3255d029dd77005c3345f5a9f1 /include/linux/input-polldev.h | |
parent | 85796e7d939a39787f10a643477298678fed85db (diff) | |
download | linux-stable-0dcd8073673115eeb67343787f244905f62532f2.tar.gz linux-stable-0dcd8073673115eeb67343787f244905f62532f2.tar.bz2 linux-stable-0dcd8073673115eeb67343787f244905f62532f2.zip |
Input: add skeleton for simple polled devices
input-polldev provides a skeleton for supporting simple input
devices that need to be periodically scanned or polled to
detect changes in their state.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'include/linux/input-polldev.h')
-rw-r--r-- | include/linux/input-polldev.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/linux/input-polldev.h b/include/linux/input-polldev.h new file mode 100644 index 000000000000..597a0077b3c5 --- /dev/null +++ b/include/linux/input-polldev.h @@ -0,0 +1,46 @@ +#ifndef _INPUT_POLLDEV_H +#define _INPUT_POLLDEV_H + +/* + * 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 + * @flush: driver-supplied method that flushes device's state upon + * opening (optional) + * @poll: driver-supplied method that polls the device and posts + * input events (mandatory). + * @poll_interval: specifies how often the poll() method shoudl be called. + * @input: input device structire 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 (*flush)(struct input_polled_dev *dev); + void (*poll)(struct input_polled_dev *dev); + unsigned int poll_interval; /* msec */ + + struct input_dev *input; + struct delayed_work work; +}; + +struct input_polled_dev *input_allocate_polled_device(void); +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 |