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Commit 6916d97f authored by Henrik Rydberg's avatar Henrik Rydberg Committed by Dmitry Torokhov
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Input: bcm5974 - add quad-finger tapping 



The integrated button on the new unibody Macbooks presents a need to
report explicit four-finger actions. Evidently, the finger pressing
the button is also touching the trackpad, so in order to fully support
three-finger actions, the driver must be able to report four-finger
actions. This patch adds a new button, BTN_TOOL_QUADTAP, which
achieves this.

Signed-off-by: default avatarHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 9894cf0f

drivers/input/mouse/bcm5974.c

+3 −1
Original line number Diff line number Diff line
@@ -258,6 +258,7 @@ static void setup_events_to_report(struct input_dev *input_dev, 
	__set_bit(BTN_TOOL_FINGER, input_dev->keybit);

	__set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);

	__set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);

	__set_bit(BTN_TOOL_QUADTAP, input_dev->keybit);

	__set_bit(BTN_LEFT, input_dev->keybit);

}
@@ -329,7 +330,8 @@ static int report_tp_state(struct bcm5974 *dev, int size) 
	input_report_key(input, BTN_TOUCH, dev->fingers > 0);

	input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1);

	input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2);

	input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers > 2);

	input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3);

	input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3);



	input_report_abs(input, ABS_PRESSURE, abs_p);

	input_report_abs(input, ABS_TOOL_WIDTH, abs_w);

include/linux/input.h

+1 −0
Original line number Diff line number Diff line
@@ -445,6 +445,7 @@ struct input_absinfo { 
#define BTN_STYLUS2		0x14c

#define BTN_TOOL_DOUBLETAP	0x14d

#define BTN_TOOL_TRIPLETAP	0x14e

#define BTN_TOOL_QUADTAP	0x14f	/* Four fingers on trackpad */



#define BTN_WHEEL		0x150

#define BTN_GEAR_DOWN		0x150