Messages in this thread | | | Date | Thu, 9 Aug 2012 13:05:30 +0100 | From | Mark Brown <> | Subject | Re: How to get the irq flags from the dts file |
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On Thu, Aug 09, 2012 at 11:48:42AM +0000, Arnd Bergmann wrote: > On Thursday 09 August 2012, Wei Ni wrote:
> > The wlan driver wish this flags include the IRQF_TRGGER_* information, > > and it will use this flags to configure other hw settings. If it is > > wrong, the wlan can't work.
You can read the configuration with irqd_get_trigger_type() - see the OF code in sound/soc/codecs/wm8903.c for an example.
> The driver should not need to know about thie flag. It gets read > by irq_create_of_mapping when calling teh xlate function and > gets set using irq_set_irq_type from there too.
That only helps the interrupt controller, it doesn't help the interrupt source. A good proportion of embedded devices have a great deal of flexibility in how they signal interrupts so they need to know what mode to pick.
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