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evdev: add helper function evdev_need_mtdev

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Prep work for upcoming patches

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 2014-09-15 14:59:07 +10:00
parent 3b51ea5cce
commit 7bef1ecf4e
1 changed files with 11 additions and 2 deletions
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13
src/evdev.c
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@ -733,6 +733,16 @@ configure_pointer_acceleration(struct evdev_device *device)
return 0;
}
static inline int
evdev_need_mtdev(struct evdev_device *device)
{
struct libevdev *evdev = device->evdev;
return (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) &&
libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y) &&
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_SLOT));
}
static int
evdev_configure_device(struct evdev_device *device)
{
@ -806,8 +816,7 @@ evdev_configure_device(struct evdev_device *device)
has_touch = 1;
has_mt = 1;
if (!libevdev_has_event_code(evdev,
EV_ABS, ABS_MT_SLOT)) {
if (evdev_need_mtdev(device)) {
device->mtdev = mtdev_new_open(device->fd);
if (!device->mtdev)
return -1;