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Input: uinput - setup MT usage during device creation

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The input devices created by uinput do not currently handle multitouch
properly. All events will appear as if they came from slot zero, and
the input event buffers are not adjusted. This patch creates the MT
slots during setup, and sets the number of events per packet based
on the MT usage.

Signed-off-by: Henrik Rydberg <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>
This commit is contained in:
Henrik Rydberg 2010-09-19 16:25:36 -07:00 • committed by Dmitry Torokhov
commit 38e7afe96c
1 changed files with 7 additions and 0 deletions
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7
drivers/input/misc/uinput.c
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@ -404,6 +404,13 @@ static int uinput_setup_device(struct uinput_device *udev, const char __user *bu
retval = uinput_validate_absbits(dev);
if (retval < 0)
goto exit;
if (test_bit(ABS_MT_SLOT, dev->absbit)) {
int nslot = input_abs_get_max(dev, ABS_MT_SLOT) + 1;
input_mt_create_slots(dev, nslot);
input_set_events_per_packet(dev, 6 * nslot);
} else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
input_set_events_per_packet(dev, 60);
}
}
udev->state = UIST_SETUP_COMPLETE;