[POWERPC] Use mpc8641hpcn PIC base address from dev tree.

After going through the trouble of setting up the PIC base
address in the pic@40000 device tree node, use it instead
of the obsolete hard-coded value.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 9 insertions, 10 deletions

diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 813eb5811eb4..0b1b52168bb7 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -68,37 +68,36 @@ mpc86xx_hpcn_init_irq(void)
 {
         struct mpic *mpic1;
         struct device_node *np;
-        phys_addr_t openpic_paddr;
+        struct resource res;
 #ifdef CONFIG_PCI
         struct device_node *cascade_node = NULL;
         int cascade_irq;
 #endif
 
+        /* Determine PIC address. */
         np = of_find_node_by_type(NULL, "open-pic");
         if (np == NULL)
                 return;
-
-        /* Determine the Physical Address of the OpenPIC regs */
-        openpic_paddr = get_immrbase() + MPC86xx_OPENPIC_OFFSET;
+        of_address_to_resource(np, 0, &res);
 
         /* Alloc mpic structure and per isu has 16 INT entries. */
-        mpic1 = mpic_alloc(np, openpic_paddr,
+        mpic1 = mpic_alloc(np, res.start,
                         MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                         16, NR_IRQS - 4,
                         " MPIC     ");
         BUG_ON(mpic1 == NULL);
 
-        mpic_assign_isu(mpic1, 0, openpic_paddr + 0x10000);
+        mpic_assign_isu(mpic1, 0, res.start + 0x10000);
 
         /* 48 Internal Interrupts */
-        mpic_assign_isu(mpic1, 1, openpic_paddr + 0x10200);
-        mpic_assign_isu(mpic1, 2, openpic_paddr + 0x10400);
-        mpic_assign_isu(mpic1, 3, openpic_paddr + 0x10600);
+        mpic_assign_isu(mpic1, 1, res.start + 0x10200);
+        mpic_assign_isu(mpic1, 2, res.start + 0x10400);
+        mpic_assign_isu(mpic1, 3, res.start + 0x10600);
 
         /* 16 External interrupts
          * Moving them from [0 - 15] to [64 - 79]
          */
-        mpic_assign_isu(mpic1, 4, openpic_paddr + 0x10000);
+        mpic_assign_isu(mpic1, 4, res.start + 0x10000);
 
         mpic_init(mpic1);