Re: [PATCH 2/2] mrst_max3110: fix SPI UART interrupt parameters

[David Cohen]

On 10/22/2013 12:46 PM, Alexander Shiyan wrote:
> > The change in the max3110 driver makes the IRQ handling threaded, now
> > the handler is called only once per received character. Without that
> > change, we had many (more than 100) interrupts per one received
> > character.
> >
> > Unfortunately, SFI interface does not support IRQ polarity and
> > triggering modes, so we have to keep the hacks as hard-coded device
> > names and IRQ numbers until we switch to ACPI.
> >
> > Edge-triggered IRQ still supported to keep old platforms working.
> > Use platform data to pass the irq mode argument.
> >
> > Signed-off-by: Ivan Gorinov <ivan.gorinov@xxxxxxxxx>
> > Signed-off-by: Li Ning <ning.li@xxxxxxxxx>
> > Signed-off-by: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
> ...
> > +++ b/include/linux/serial_max3110.h
> > @@ -0,0 +1,16 @@
> > +#ifndef _LINUX_SERIAL_MAX3110_H
> > +#define _LINUX_SERIAL_MAX3110_H
> > +
> > +/**
> > + * struct plat_max3110 - MAX3110 SPI UART platform data
> > + * @irq_edge_trigger: if IRQ is edge triggered
> > + *
> > + * You should use this structure in your machine description to specify
> > + * how the MAX3110 is connected.
> > + *
> > + */
> > +struct plat_max3110 {
> > +	int irq_edge_triggered;
> > +};
> > +
> > +#endif
> > --
>
> Is just resource->flags for IRQ can be reused for handle such case?

I believe your suggestion makes perfect sense. I'll rework it.

Br, David Cohen
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