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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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3
drivers/input/mouse/alps.c
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@@ -2373,6 +2373,9 @@ int alps_init(struct psmouse *psmouse)
dev2->keybit[BIT_WORD(BTN_LEFT)] =
BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
if (priv->flags & ALPS_DUALPOINT)
__set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
if (input_register_device(priv->dev2))
goto init_fail;