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Input: add INPUT_PROP_POINTING_STICK property

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It is useful for userspace to know that there not dealing with a regular
mouse but rather with a pointing stick (e.g. a trackpoint) so that
userspace can e.g. automatically enable middle button scrollwheel
emulation.

It is impossible to tell the difference from the evdev info without
resorting to putting a list of device / driver names in userspace, this is
undesirable.

Add a property which allows userspace to see if a device is a pointing
stick, and set it on all the pointing stick drivers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans de Goede 2014-09-08 14:42:12 -07:00 • committed by Dmitry Torokhov
parent 271329b3c7
commit 7611392fe8
5 changed files with 10 additions and 0 deletions
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1
include/uapi/linux/input.h
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@ -165,6 +165,7 @@ struct input_keymap_entry {
#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_POINTING_STICK 0x05 /* is a pointing stick */
#define INPUT_PROP_MAX 0x1f
#define INPUT_PROP_CNT (INPUT_PROP_MAX + 1)