include/linux/input.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * Copyright (c) 1999-2002 Vojtech Pavlik
17  * In-kernel definitions.
28  * struct input_value - input value representation
47  * struct input_dev - represents an input device
70  * @getkeycode: optional legacy method to retrieve current keymap.
71  * @setkeycode: optional method to alter current keymap, used to implement
110  *	(such as keymap or absmin, absmax, absfuzz, etc.) after device
115  *	to make sure that dev->open() is only called when the first
116  *	user opens device and dev->close() is called when the very
119  *	causes input_open_device*() fail with -ENODEV.
122  *	accessing the list dev->mutex must be held
269  * struct input_handler - implements one of interfaces for input devices
270  * @private: driver-specific data
272  *	interrupts disabled and dev->event_lock spinlock held and so
275  *	input core with interrupts disabled and dev->event_lock
280  *	to perform fine-grained matching between device and handler
334  * struct input_handle - links input device with an input handler
335  * @private: handler-specific data
367 	return dev ? to_input_dev(get_device(&dev->dev)) : NULL;  in input_get_device()
373 		put_device(&dev->dev);  in input_put_device()
378 	return dev_get_drvdata(&dev->dev);  in input_get_drvdata()
383 	dev_set_drvdata(&dev->dev, data);  in input_set_drvdata()
406 				  int (*fn)(struct input_handle *, void *));
463  * input_set_events_per_packet - tell handlers about the driver event rate
474 	dev->hint_events_per_packet = n_events;  in input_set_events_per_packet()
485 	return dev->absinfo ? dev->absinfo[axis]._item : 0;		\
492 	if (dev->absinfo)						\
493 		dev->absinfo[axis]._item = val;				\
518  * struct ff_device - force-feedback part of an input device
523  * @set_autocenter: Called to auto-center device
526  * @private: driver-specific data, will be freed automatically
528  *	device (not emulated like ones in input_dev->ffbit)
535  * Every force-feedback device must implement upload() and playback()
541  * dev->event_lock spinlock held and interrupts off and thus may not