ssb: Handle alternate SSPROM location

[net-next-2.6.git] / drivers / ssb / pci.c

diff --git a/drivers/ssb/pci.c b/drivers/ssb/pci.c
index 6dcda86be6ebdb83d579d27907ee1f153889000a..6e88d2b603b4ccb417506298ab9eadc5633eeccd 100644 (file)
--- a/drivers/ssb/pci.c
+++ b/drivers/ssb/pci.c
@@ -626,11 +626,22 @@ static int ssb_pci_sprom_get(struct ssb_bus *bus,
                return -ENODEV;
        }
        if (bus->chipco.dev) {  /* can be unavailible! */
-               bus->sprom_offset = (bus->chipco.dev->id.revision < 31) ?
-                       SSB_SPROM_BASE1 : SSB_SPROM_BASE31;
+               /*
+                * get SPROM offset: SSB_SPROM_BASE1 except for
+                * chipcommon rev >= 31 or chip ID is 0x4312 and
+                * chipcommon status & 3 == 2
+                */
+               if (bus->chipco.dev->id.revision >= 31)
+                       bus->sprom_offset = SSB_SPROM_BASE31;
+               else if (bus->chip_id == 0x4312 &&
+                        (bus->chipco.status & 0x03) == 2)
+                       bus->sprom_offset = SSB_SPROM_BASE31;
+               else
+                       bus->sprom_offset = SSB_SPROM_BASE1;
        } else {
                bus->sprom_offset = SSB_SPROM_BASE1;
        }
+       ssb_dprintk(KERN_INFO PFX "SPROM offset is 0x%x\n", bus->sprom_offset);
 
        buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
        if (!buf)