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touchpad: re-route trackpoint buttons on the *50 Lenovo series

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The laptops on this series have the physical trackpoint buttons back but
wired them up to the touchpad instead of the trackpoint device and they appear
as BTN_0, BTN_1 and BTN_2 for left, right, middle.

The udev hwdb marks these for us with the TOUCHPAD_HAS_TRACKPOINT_BUTTONS tag
[1]. Use that tag to identify them and re-route the events through the
trackstick device after mangling the event codes to represent the actual
buttons.

[1] http://cgit.freedesktop.org/systemd/systemd/tree/hwdb/70-touchpad.hwdb

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Peter Hutterer 2015-01-28 15:38:00 +10:00
parent 82bb5841a2
commit 428614bb24
2 changed files with 45 additions and 0 deletions
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44
src/evdev-mt-touchpad.c
View file

@ -349,6 +349,41 @@ tp_process_fake_touch(struct tp_dispatch *tp,
}
}
static void
tp_process_trackpoint_button(struct tp_dispatch *tp,
const struct input_event *e,
uint64_t time)
{
struct evdev_dispatch *dispatch;
struct input_event event;
if (!tp->buttons.trackpoint ||
(tp->device->tags & EVDEV_TAG_TOUCHPAD_TRACKPOINT) == 0)
return;
dispatch = tp->buttons.trackpoint->dispatch;
event = *e;
switch (event.code) {
case BTN_0:
event.code = BTN_LEFT;
break;
case BTN_1:
event.code = BTN_RIGHT;
break;
case BTN_2:
event.code = BTN_MIDDLE;
break;
default:
return;
}
dispatch->interface->process(dispatch,
tp->buttons.trackpoint,
&event, time);
}
static void
tp_process_key(struct tp_dispatch *tp,
const struct input_event *e,
@ -367,6 +402,11 @@ tp_process_key(struct tp_dispatch *tp,
case BTN_TOOL_QUADTAP:
tp_process_fake_touch(tp, e, time);
break;
case BTN_0:
case BTN_1:
case BTN_2:
tp_process_trackpoint_button(tp, e, time);
break;
}
}
@ -1063,6 +1103,10 @@ tp_tag_device(struct evdev_device *device,
device->tags |= EVDEV_TAG_INTERNAL_TOUCHPAD;
} else if (bustype != BUS_BLUETOOTH)
device->tags |= EVDEV_TAG_INTERNAL_TOUCHPAD;
if (udev_device_get_property_value(udev_device,
"TOUCHPAD_HAS_TRACKPOINT_BUTTONS"))
device->tags |= EVDEV_TAG_TOUCHPAD_TRACKPOINT;
}
static struct evdev_dispatch_interface tp_interface = {

1
src/evdev.h
View file

@ -54,6 +54,7 @@ enum evdev_device_tags {
EVDEV_TAG_EXTERNAL_MOUSE = (1 << 0),
EVDEV_TAG_INTERNAL_TOUCHPAD = (1 << 1),
EVDEV_TAG_TRACKPOINT = (1 << 2),
EVDEV_TAG_TOUCHPAD_TRACKPOINT = (1 << 3),
};
struct mt_slot {