bcma: implement BCM4331 workaround for external PA lines

We need to disable ext. PA lines for reading SPROM. It's disabled by
default, but this patch allows using bcma after loading wl, which leaves
workaround enabled.

Cc: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/bcma/sprom.c b/drivers/bcma/sprom.c
index 8b5b7856abe3..166ed13ec066 100644
--- a/drivers/bcma/sprom.c
+++ b/drivers/bcma/sprom.c
@@ -152,6 +152,9 @@ int bcma_sprom_get(struct bcma_bus *bus)
         if (!sprom)
                 return -ENOMEM;
 
+        if (bus->chipinfo.id == 0x4331)
+                bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, false);
+
         /* Most cards have SPROM moved by additional offset 0x30 (48 dwords).
          * According to brcm80211 this applies to cards with PCIe rev >= 6
          * TODO: understand this condition and use it */
@@ -159,6 +162,9 @@ int bcma_sprom_get(struct bcma_bus *bus)
                 BCMA_CC_SPROM_PCIE6;
         bcma_sprom_read(bus, offset, sprom);
 
+        if (bus->chipinfo.id == 0x4331)
+                bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, true);
+
         err = bcma_sprom_valid(sprom);
         if (err)
                 goto out;