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Commit d5051272 authored by Daniel Kurtz's avatar Daniel Kurtz Committed by Dmitry Torokhov
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Input: add BTN_TOOL_QUINTTAP for reporting 5 fingers on touchpad 



"4-finger scroll" is a gesture supported by some applications and
operating systems.

"Resting thumb" is when a clickpad user rests a finger (e.g., a
thumb), in a "click zone" (typically the bottom of the touchpad) in
anticipation of click+move=select gestures.

Thus, "4-finger scroll + resting thumb" is a 5-finger gesture.
To allow userspace to detect this gesture, we send BTN_TOOL_QUINTTAP.

Signed-off-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
Acked-by: default avatarChase Douglas <chase.douglas@canonical.com>
Acked-by: default avatarHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 4dc772d2

drivers/input/input-mt.c

+1 −0
Original line number Diff line number Diff line
@@ -117,6 +117,7 @@ void input_mt_report_finger_count(struct input_dev *dev, int count) 
	input_event(dev, EV_KEY, BTN_TOOL_DOUBLETAP, count == 2);

	input_event(dev, EV_KEY, BTN_TOOL_TRIPLETAP, count == 3);

	input_event(dev, EV_KEY, BTN_TOOL_QUADTAP, count == 4);

	input_event(dev, EV_KEY, BTN_TOOL_QUINTTAP, count == 5);

}

EXPORT_SYMBOL(input_mt_report_finger_count);

include/linux/input.h

+1 −0
Original line number Diff line number Diff line
@@ -503,6 +503,7 @@ struct input_keymap_entry { 
#define BTN_TOOL_FINGER		0x145

#define BTN_TOOL_MOUSE		0x146

#define BTN_TOOL_LENS		0x147

#define BTN_TOOL_QUINTTAP	0x148	/* Five fingers on trackpad */

#define BTN_TOUCH		0x14a

#define BTN_STYLUS		0x14b

#define BTN_STYLUS2		0x14c