On Tue, Feb 5, 2019 at 4:17 PM Nikolaus Voss <[email protected]> wrote: > Interupts were generated using GPIN interrupts of > ADP5588. These interrupts have two important limitations: > 1. Interrupts can only be generated for either rising or > falling edges but not both. > 2. Interrupts are reasserted as long as the interrupt condition > persists (i.e. high or low level on that GPIN). This generates > lots of interrupts unless the event is very short. > > To overcome this, ADP5588 provides an event system which queues > up to 10 events in a buffer. GPIN events are queued whenever the > GPIN is asserted or deasserted. This makes it possible to support > generating GPIN interrupts for both edges and to generate only one > interrupt per state change. > Thus it is possible to chain the gpio-keys driver for some GPIOs. > > Signed-off-by: Nikolaus Voss <[email protected]>
Patch applied with Michael's ACK. Yours, Linus Walleij
