Henri Roosen wrote:
> Hi,
>
> I have an ARM based platform which is similar to the at91sam9263ek
> eval board. One of the differences is that touchscreen irq is on pin
> PB31 instead of PA15. The 'arch/arm/mach-at91/board-sam9263ek.c' has
> been changed for this.
>
> Touch works when using the kernel without Xenomai.
> When using the same kernel with Xenomai patches, touch doesn't work. I
> get only 2 interrupts on the GPIO pin (cat /proc/interrupts).
>
> Anyone an idea why the Xenomai enabled kernel stops generating
> interrupts on the GPIO pins while the non-Xenomai enabled kernel
> doesn't?
Xenomai does not change anything. However, the I-pipe patch changes the
way interrupts are handled. Now, we have to figure out exactly how this
is an issue.
Is this GPIO a muxed GPIO?
As a first test, could you try commenting out the
#define __IPIPE_FEATURE_PIC_MUTE
in arch/arm/mach-at91/include/mach/irqs.h ?
Have you tried commenting out the line you show us which disables
interrupts? Can you explain why this interrupt line is using
handle_simple_IRQ if it is not a muxed GPIO?
--
Gilles.
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