diff options
| author | Peter Hutterer <peter.hutterer@who-t.net> | 2013-08-08 12:03:08 +1000 |
|---|---|---|
| committer | Kristian Høgsberg <krh@bitplanet.net> | 2013-08-08 13:46:14 -0700 |
| commit | 45d659dd820dc1fd9baee91fdfaba01966ddfd75 (patch) | |
| tree | fb77c6d95c62e8860e7bbf3d5e57c6fe443cdad1 /src/evdev.c | |
| parent | f3d62276d20750e636fc82bc89b3c4c23576299d (diff) | |
evdev: check for ABS_MT_POSITION_X/Y to determine mt devices
mtdev as currently used in weston is a noop. mtdev's purpose is to convert
Protocol A devices (without ABS_MT_SLOT) to Protocol B devices (slots).
For Protocol B devices mtdev merely routes the events, so checking for
slots and then using mtdev based on that adds no functionality.
Check for ABS_MT_POSITION_X/Y instead and use that to categorise a device
as MT device. mtdev will provide us with a slotted protocol for all devices.
https://bugs.freedesktop.org/show_bug.cgi?id=54428
Diffstat (limited to 'src/evdev.c')
| -rw-r--r-- | src/evdev.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/evdev.c b/src/evdev.c index e9fd8091..fc5004c2 100644 --- a/src/evdev.c +++ b/src/evdev.c @@ -454,7 +454,11 @@ evdev_handle_device(struct evdev_device *device) device->abs.max_y = absinfo.maximum; device->caps |= EVDEV_MOTION_ABS; } - if (TEST_BIT(abs_bits, ABS_MT_SLOT)) { + /* We only handle the slotted Protocol B in weston. + Devices with ABS_MT_POSITION_* but not ABS_MT_SLOT + require mtdev for conversion. */ + if (TEST_BIT(abs_bits, ABS_MT_POSITION_X) && + TEST_BIT(abs_bits, ABS_MT_POSITION_Y)) { ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X), &absinfo); device->abs.min_x = absinfo.minimum; |