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
69  * @getkeycode: optional legacy method to retrieve current keymap.
70  * @setkeycode: optional method to alter current keymap, used to implement
109  *	(such as keymap or absmin, absmax, absfuzz, etc.) after device
114  *	to make sure that dev->open() is only called when the first
115  *	user opens device and dev->close() is called when the very
118  *	causes input_open_device*() fail with -ENODEV.
121  *	accessing the list dev->mutex must be held
263  * struct input_handler - implements one of interfaces for input devices
264  * @private: driver-specific data
266  *	interrupts disabled and dev->event_lock spinlock held and so
269  *	input core with interrupts disabled and dev->event_lock
274  *	to perform fine-grained matching between device and handler
326  * struct input_handle - links input device with an input handler
327  * @private: handler-specific data
357 	return dev ? to_input_dev(get_device(&dev->dev)) : NULL;  in input_get_device()
363 		put_device(&dev->dev);  in input_put_device()
368 	return dev_get_drvdata(&dev->dev);  in input_get_drvdata()
373 	dev_set_drvdata(&dev->dev, data);  in input_set_drvdata()
396 				  int (*fn)(struct input_handle *, void *));
453  * input_set_events_per_packet - tell handlers about the driver event rate
464 	dev->hint_events_per_packet = n_events;  in input_set_events_per_packet()
475 	return dev->absinfo ? dev->absinfo[axis]._item : 0;		\
482 	if (dev->absinfo)						\
483 		dev->absinfo[axis]._item = val;				\
508  * struct ff_device - force-feedback part of an input device
513  * @set_autocenter: Called to auto-center device
516  * @private: driver-specific data, will be freed automatically
518  *	device (not emulated like ones in input_dev->ffbit)
525  * Every force-feedback device must implement upload() and playback()
531  * dev->event_lock spinlock held and interrupts off and thus may not