MIPS: of/pci: Use of_pci_range_parser

This patch converts the pci_load_of_ranges function to use the new common
of_pci_range_parser.

Signed-off-by: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Andrew Murray <Andrew.Murray@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: jason@lakedaemon.net
Patchwork: https://patchwork.linux-mips.org/patch/5625/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 18 insertions, 32 deletions

diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 33e7aa52d9c4..1bf60b127377 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -120,51 +120,37 @@ static void pcibios_scanbus(struct pci_controller *hose)
 #ifdef CONFIG_OF
 void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node)
 {
-        const __be32 *ranges;
-        int rlen;
-        int pna = of_n_addr_cells(node);
-        int np = pna + 5;
+        struct of_pci_range range;
+        struct of_pci_range_parser parser;
 
         pr_info("PCI host bridge %s ranges:\n", node->full_name);
-        ranges = of_get_property(node, "ranges", &rlen);
-        if (ranges == NULL)
-                return;
         hose->of_node = node;
 
-        while ((rlen -= np * 4) >= 0) {
-                u32 pci_space;
+        if (of_pci_range_parser_init(&parser, node))
+                return;
+
+        for_each_of_pci_range(&parser, &range) {
                 struct resource *res = NULL;
-                u64 addr, size;
-
-                pci_space = be32_to_cpup(&ranges[0]);
-                addr = of_translate_address(node, ranges + 3);
-                size = of_read_number(ranges + pna + 3, 2);
-                ranges += np;
-                switch ((pci_space >> 24) & 0x3) {
-                case 1:         /* PCI IO space */
+
+                switch (range.flags & IORESOURCE_TYPE_BITS) {
+                case IORESOURCE_IO:
                         pr_info("  IO 0x%016llx..0x%016llx\n",
-                                        addr, addr + size - 1);
+                                range.cpu_addr,
+                                range.cpu_addr + range.size - 1);
                         hose->io_map_base =
-                                (unsigned long)ioremap(addr, size);
+                                (unsigned long)ioremap(range.cpu_addr,
+                                                       range.size);
                         res = hose->io_resource;
-                        res->flags = IORESOURCE_IO;
                         break;
-                case 2:         /* PCI Memory space */
-                case 3:         /* PCI 64 bits Memory space */
+                case IORESOURCE_MEM:
                         pr_info(" MEM 0x%016llx..0x%016llx\n",
-                                        addr, addr + size - 1);
+                                range.cpu_addr,
+                                range.cpu_addr + range.size - 1);
                         res = hose->mem_resource;
-                        res->flags = IORESOURCE_MEM;
                         break;
                 }
-                if (res != NULL) {
-                        res->start = addr;
-                        res->name = node->full_name;
-                        res->end = res->start + size - 1;
-                        res->parent = NULL;
-                        res->sibling = NULL;
-                        res->child = NULL;
-                }
+                if (res != NULL)
+                        of_pci_range_to_resource(&range, node, res);
         }
 }