On Thursday 13 November 2014 04:30 PM, Arnd Bergmann wrote:
On Thursday 13 November 2014 11:52:48 Alexander Stein wrote:
On Thursday 13 November 2014 11:47:13, Arnd Bergmann wrote:
Regarding your initial use case of testing interrupt polarity, would
you have been able to do the same thing by looking at the interrupt
count in /proc/interrupts?
This is only possible if some driver actually requests this interrupt, no?
Yes, I think that is correct, at least with sparseirq, which is now the
default. For interrupts that are mapped by the irqchip, you can look
up the number of spurious interrupts in /proc/irq/<nr>/spurious.
yes, I came across multiple PMIC(TPS65910, MAXIM, Ricoh) module which
generates interrupt when their On-key pin get toggle. Key is connected
with this pin of PMIC and for on-key driver, we are using the gpio-keys
driver by passing interrupt number instead of complete new driver.
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