On Sun, Mar 07, 2021 at 10:22:40PM +0000, Paul Cercueil wrote: > We want to be able to report the input event as soon as the debounce > delay elapsed. However, the current code does not really ensure that, > as it uses the jiffies-based schedule_delayed_work() API. With a small > enough HZ value (HZ <= 100), this results in some input events being > lost, when a key is quickly pressed then released (on a human's time > scale). > > Switching to hrtimers fixes this issue, and will work even on extremely > low HZ values (tested at HZ=24). This is however only possible if > reading the GPIO is possible without sleeping. If this condition is not > met, the previous approach of using a jiffies-based timer is taken. > > Signed-off-by: Paul Cercueil <p...@crapouillou.net>
Applied with minor edits to make more use of debounce_use_hrtimer flag. Thanks. -- Dmitry
