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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 <paul@crapouillou.net> Link: https://lore.kernel.org/r/20210307222240.380583-3-paul@crapouillou.net Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> |
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| .. | ||
| gameport | ||
| joystick | ||
| keyboard | ||
| misc | ||
| mouse | ||
| rmi4 | ||
| serio | ||
| tablet | ||
| touchscreen | ||
| apm-power.c | ||
| evbug.c | ||
| evdev.c | ||
| ff-core.c | ||
| ff-memless.c | ||
| input-compat.c | ||
| input-compat.h | ||
| input-leds.c | ||
| input-mt.c | ||
| input-poller.c | ||
| input-poller.h | ||
| input.c | ||
| joydev.c | ||
| Kconfig | ||
| Makefile | ||
| matrix-keymap.c | ||
| mousedev.c | ||
| sparse-keymap.c | ||