Laurent,
Previously I was getting iommu translation faults when switching from
the RESIZER output to the CCDC output.
I have finally pulled in all the changes on the
git://gitorious.org/maemo-multimedia/omap3isp-rx51.git line and I am
happy to say that those translation faults have gone away. I can now
switch between the RESIZE and the CCDC without any issues.
I still have a problem though. Our image sensor plugs in as a module and
can unfortunately be unplugged while the pipeline is streaming. When
this happens, I get a select timeout (as I would expect) and then when I
stop the stream I get the message:
omap3isp omap3isp: CCDC stop timeout!
omap3isp omap3isp: Unable to stop OMAP3 ISP CCDC
When I plug the image sensor module back in, I can open the devices back
up and setup the pipeline without issue, but when I try to start the
stream back up, I get:
omap-iommu omap-iommu.0: omap2_iommu_fault_isr: da:004b4600 translation
fault
omap-iommu omap-iommu.0: iommu_fault_handler: da:004b4600 pgd:ce348010
*pgd:8d3b8c01 pte:cd3b8ed0 *pte:885e0002
omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX
and the kernel locks up hard.
This translation fault, the GFX_FIFO_UNDERFLOW, and kernel locking up
are new behavior. Previously I would just get "CCDC won't become idle"
error message when I tried to start the stream back up.
Any ideas on the problem? Is there a way to force a reset to the CCDC so
that it will become IDLE?
Lane
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