Messages in this thread | | | Subject | Re: [PATCH v2 0/2] Add GPIO level-sensitive interrupt support | From | Marek Vasut <> | Date | Tue, 18 Feb 2020 17:25:55 +0100 |
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On 2/18/20 2:12 PM, Alexandre Torgue wrote: > This series adds the possibility to handle gpio interrupts on level. > > GPIO hardware block is directly linked to EXTI block but EXTI handles > external interrupts only on edge. To be able to handle GPIO interrupt on > level a "hack" is done in gpio irq chip: parent interrupt (exti irq chip) > is retriggered following interrupt type and gpio line value. > > In exti irq chip, retrigger ops function is added.
btw. this might be unrelated, but is it possible to have e.g. gpioC2 set as trigger-level-low and gpioD2 set as trigger-edge-falling ? It seems 8eb2dfee9fb1 ("pinctrl: stm32: add lock mechanism for irqmux selection") prevents that.
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