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evdev: Send first active rather than 0-th slot state as ST report

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MFC after:	2 weeks
This commit is contained in:
Vladimir Kondratyev 2021-08-25 01:45:16 +03:00
parent 2dc7188e53
commit fbe17f9017
1 changed files with 5 additions and 4 deletions
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9
sys/dev/evdev/evdev_mt.c
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@ -205,20 +205,21 @@ static void
evdev_mt_send_st_compat(struct evdev_dev *evdev)
{
struct evdev_mt *mt = evdev->ev_mt;
int nfingers, i;
int nfingers, i, st_slot;
EVDEV_LOCK_ASSERT(evdev);
nfingers = bitcount(mt->touches);
evdev_send_event(evdev, EV_KEY, BTN_TOUCH, nfingers > 0);
if ((mt->touches & 1U << 0) != 0)
/* Echo 0-th MT-slot as ST-slot */
/* Send first active MT-slot state as single touch report */
st_slot = ffs(mt->touches) - 1;
if (st_slot != -1)
for (i = 0; i < nitems(evdev_mtstmap); i++)
if (bit_test(evdev->ev_abs_flags, evdev_mtstmap[i][1]))
evdev_send_event(evdev, EV_ABS,
evdev_mtstmap[i][1],
evdev_mt_get_value(evdev, 0,
evdev_mt_get_value(evdev, st_slot,
evdev_mtstmap[i][0]));
/* Touchscreens should not report tool taps */