On Thu, May 16, 2013 at 05:55:17PM +0200, Thomas Petazzoni wrote: > From: Andrew Murray <[email protected]> > > 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_init(&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). > > Signed-off-by: Andrew Murray <[email protected]> > Signed-off-by: Liviu Dudau <[email protected]> > Signed-off-by: Thomas Petazzoni <[email protected]> > Reviewed-by: Rob Herring <[email protected]> > Tested-by: Thomas Petazzoni <[email protected]> > Tested-by: Linus Walleij <[email protected]> > Tested-by: Jingoo Han <[email protected]> > Acked-by: Grant Likely <[email protected]> > --- > drivers/of/address.c | 67 > ++++++++++++++++++++++++++++++++++++++++++++ > include/linux/of_address.h | 48 +++++++++++++++++++++++++++++++ > 2 files changed, 115 insertions(+)
patches 2, 3, and 4 applied to mvebu/of_pci to facilitate others (LinusW) basing their work off of it. thx, Jason. _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
