Re: [PATCH 0/7] USB: UHCI: Add support for non-PCI GRUSBHC HC

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On Wed, 4 May 2011, Jan Andersson wrote:

> Hi,
> 
> This series adds support for the GRUSBHC UHCI host controller found on some
> LEON/GRLIB SoCs. Patches 1 - 6 convert the UHCI HCD to be able to support
> non-PCI host controllers and patch 7 adds bus glue for the non-PCI HC.
> 
> I have tried to make the steps easy to follow by first partitioning parts that
> depend on PCI and then moving these parts to uhci-pci.c. After that some
> checkpatch warnings on the existing code are fixed. The sixth patch wraps the
> register access calls and the seventh patch adds glue for the non-PCI HC.
> 
> Each patch is compile tested. Tests have been run on x86 (with Intel 82801EB/ER
> (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)) and LEON/SPARC32 with the full
> series applied.

Interesting.  Do these parts include a companion EHCI controller?

Also, are there any issues involved in taking control of the device
away from the firmware, in cases where the firmware has to use the UHCI
controller to talk to a USB keyboard or flash drive during the
init/boot procedure?

Alan Stern

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