On Mon, 2010-08-09 at 02:54 -0700, Bob Feretich wrote:
> I am converting my second driver to RTDM. This one receives a
> negativing going edge triggered interrupt on GPIO133 of the OMAP3
> chip.
>
> I have...
> ret = rtdm_irq_request(&adis_data_rdy_irq_handle, irq,
> adis_data_rdy_irq_handler,
> RTDM_IRQTYPE_EDGE,
> "asuspidvr", ctx);
> then...
> ret = rtdm_irq_enable(&adis_data_rdy_irq_handle);
>
> but the interrupt handler is never invoked.
>
> cat /proc/xenomai/irq shows:
> IRQ CPU0
> 37: 15815 [timer]
> 39: 0 asuspidvr
> 48: 0 asuspidvr
> 91: 0 asuspidvr
> 293: 0 asuspidvr
> 418: 0 [virtual]
>
> IRQ 293 in the interrupt that should be happening.
>
> I can see the pulses on the input pin and the non-rt version of the
> driver sees the interrupts, so that excludes hardware issues and
> u-boot pin configuration issues.
>
> Any suggestions?
> Regards,
> Bob Feretich
>
>
> __
For some reason, that IRQ line may not be properly enabled by the core
code. Could you introduce this patch? If a valid routine is reported in
the kernel log message, you could locate it by address, from a kernel
image objdump.
diff --git a/ksrc/arch/arm/hal.c b/ksrc/arch/arm/hal.c
index 2c0dcfe..5f7800b 100644
--- a/ksrc/arch/arm/hal.c
+++ b/ksrc/arch/arm/hal.c
@@ -206,8 +206,13 @@ int rthal_irq_host_release(unsigned irq, void *dev_id)
int rthal_irq_enable(unsigned irq)
{
- if (irq >= IPIPE_NR_XIRQS || rthal_irq_descp(irq) == NULL)
+ if (irq >= IPIPE_NR_XIRQS || rthal_irq_descp(irq) == NULL) {
+ printk(KERN_WARNING "%s: failed to enable IRQ%d\n",
+ __FUNCTION__, irq);
return -EINVAL;
+ }
+ printk(KERN_WARNING "%s: enabling IRQ%d (%p)\n",
+ __FUNCTION__, irq, rthal_irq_descp(irq)->chip->unmask);
/* We don't care of disable nesting level: real-time IRQ channels
are not meant to be shared with the regular kernel. */
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--
Philippe.
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