include/linux/input.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * Copyright (c) 1999-2002 Vojtech Pavlik
16  * In-kernel definitions.
27  * struct input_value - input value representation
46  * struct input_dev - represents an input device
73  *	not sleep
104  *	by @event_lock and must not sleep
116  *	to make sure that dev->open() is only called when the first
117  *	user opens device and dev->close() is called when the very
120  *	causes input_open_device*() fail with -ENODEV.
123  *	accessing the list dev->mutex must be held
271  * struct input_handler - implements one of interfaces for input devices
272  * @private: driver-specific data
274  *	interrupts disabled and dev->event_lock spinlock held and so
275  *	it may not sleep
277  *	input core with interrupts disabled and dev->event_lock
278  *	spinlock held and so it may not sleep. The method must return
283  *	to perform fine-grained matching between device and handler
335  * struct input_handle - links input device with an input handler
336  * @private: handler-specific data
345  *	This method is being called by the input core with interrupts disabled
346  *	and dev->event_lock spinlock held and so it may not sleep.
374 	return dev ? to_input_dev(get_device(&dev->dev)) : NULL;  in input_get_device()
380 		put_device(&dev->dev);  in input_put_device()
385 	return dev_get_drvdata(&dev->dev);  in input_get_drvdata()
390 	dev_set_drvdata(&dev->dev, data);  in input_set_drvdata()
470  * input_set_events_per_packet - tell handlers about the driver event rate
481 	dev->hint_events_per_packet = n_events;  in input_set_events_per_packet()
494 	return dev->absinfo ? dev->absinfo[axis]._item : 0;		\
501 	if (dev->absinfo)						\
502 		dev->absinfo[axis]._item = val;				\
529  * struct ff_device - force-feedback part of an input device
534  * @set_autocenter: Called to auto-center device
537  * @private: driver-specific data, will be freed automatically
539  *	device (not emulated like ones in input_dev->ffbit)
546  * Every force-feedback device must implement upload() and playback()
552  * dev->event_lock spinlock held and interrupts off and thus may not
553  * sleep.