On Wednesday, March 27, 2013 10:04 PM, Thierry Reding wrote:
>
> On Tue, Mar 26, 2013 at 04:20:23PM +0000, Andrew Murray wrote:
> > This patch factors out common implementation patterns to reduce overall
> > kernel
> > code and provide a means for host bridge drivers to directly obtain struct
> > resources from the DT's ranges property without relying on architecture
> > specific
> > DT handling. This will make it easier to write archiecture independent host
> > bridge
> > drivers and mitigate against further duplication of DT parsing code.
> >
> > This patch can be used in the following way:
> >
> > struct of_pci_range_parser parser;
> > struct of_pci_range range;
> >
> > if (of_pci_range_parser(&parser, np))
> > ; //no ranges property
> >
> > for_each_of_pci_range(&parser, &range) {
> >
> > /*
> > directly access properties of the address range, e.g.:
> > range.pci_space, range.pci_addr, range.cpu_addr,
> > range.size, range.flags
> >
> > alternatively obtain a struct resource, e.g.:
> > struct resource res;
> > of_pci_range_to_resource(&range, np, &res);
> > */
> > }
> >
> > Additionally the implementation takes care of adjacent ranges and merges
> > them
> > into a single range (as was the case with powerpc and microblaze).
> >
> > The modifications to microblaze, mips and powerpc have not been tested.
> >
> > Signed-off-by: Andrew Murray <[email protected]>
> > Signed-off-by: Liviu Dudau <[email protected]>
> > Signed-off-by: Thomas Petazzoni <[email protected]>
>
> Tested-by: Thierry Reding <[email protected]>
It works properly with Exynos5440.
Tested-by: Jingoo Han <[email protected]>
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