From 9f85eee72a2a3918b2d5cd7b1bf88da69232dede Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 26 Aug 2014 17:33:54 +0200 Subject: fdt: Add a function to return PCI BDF triplet The fdtdec_pci_get_bdf() function returns the bus, device, function triplet of a PCI device by parsing the "reg" property according to the PCI device tree binding. Acked-by: Simon Glass Signed-off-by: Thierry Reding --- include/fdtdec.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include') diff --git a/include/fdtdec.h b/include/fdtdec.h index 8b24deb767..99cb353804 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -649,4 +649,15 @@ int fdt_get_named_resource(const void *fdt, int node, const char *property, const char *prop_names, const char *name, struct fdt_resource *res); +/** + * Look at the reg property of a device node that represents a PCI device + * and parse the bus, device and function number from it. + * + * @param fdt FDT blob + * @param node node to examine + * @param bdf returns bus, device, function triplet + * @return 0 if ok, negative on error + */ +int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf); + #endif -- cgit v1.2.1