Commit f37c0134 authored Apr 19, 2014 by Hans de Goede Committed by Dmitry Torokhov Apr 19, 2014

Input: Add INPUT_PROP_TOPBUTTONPAD device property

On some newer laptops with a trackpoint the physical buttons for the
trackpoint have been removed to allow for a larger touchpad. On these
laptops the buttonpad has clearly marked areas on the top which are to be
used as trackpad buttons.

Users of the event device-node need to know about this, so that they can
properly interpret BTN_LEFT events as being a left / right / middle click
depending on where on the button pad the clicking finger is.

This commits adds a INPUT_PROP_TOPBUTTONPAD device property which drivers
for such buttonpads will use to signal to the user that this buttonpad not
only has the normal bottom button area, but also a top button area.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

parent a7c5868c

include/uapi/linux/input.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -164,6 +164,7 @@ struct input_keymap_entry {
		#define INPUT_PROP_DIRECT 0x01 /* direct input devices */
		#define INPUT_PROP_BUTTONPAD 0x02 /* has button(s) under pad */
		#define INPUT_PROP_SEMI_MT 0x03 /* touch rectangle only */
		#define INPUT_PROP_TOPBUTTONPAD 0x04 /* softbuttons at top of pad */

		#define INPUT_PROP_MAX 0x1f
		#define INPUT_PROP_CNT (INPUT_PROP_MAX + 1)