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Subject[PATCH 3.12 03/66] Input: Add INPUT_PROP_TOPBUTTONPAD device property
From: Hans de Goede <>

3.12-stable review patch. If anyone has any objections, please let me know.


commit f37c013409bb78ebb958821aa10d069e707cabac upstream.

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 <>
Signed-off-by: Dmitry Torokhov <>
Signed-off-by: Jiri Slaby <>
include/uapi/linux/input.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index a3726275876d..f30db096455f 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -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

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