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

On Thu, Aug 09, 2012 at 11:48:42AM +0000, Arnd Bergmann wrote:

On Thursday 09 August 2012, Wei Ni wrote:

quoted

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.