quoted

quoted

On omaps, if the wlcore interrupt is configured as level instead of edge,
L4PER will stop doing hardware based idling after ifconfig wlan0 down is
done and the WL_EN line is pulled down.

Do we understand why omap is doing this? Is it a bug or a normal behavior?

AFAIK way back edge interrupts have been used. On some omaps based

boards.

quoted

They have used level interrupts instead due to occasional interrupts being

missed

quoted

By the omap interrupts controller when using edge based interrupts which

caused

quoted

Issues. This was the reason many boards are set to using level based interrupts

which

quoted

Seemed much more robust.

No idea yet why exactly the gpio modules won't idle after that. But for making
edge interrupts behave, I suspect that Grygorii's patch "[RESEND PATCH] gpio:
omap: Fix lost edge interrupts" fixes those issues.

Glad to see this patch fixing edge interrupts. Makes a lot of sense.
Then, all looks good to me.

Best Regards,
Eyal
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