Re: How to get the irq flags from the dts file

[Wei Ni]

On Thu, 2012-08-09 at 20:05 +0800, Mark Brown wrote:
> 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.

I tried it, it worked fine. thanks for your help.

> 
> > 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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