[PATCH] PCI: quirk for IBM Dock II cardbus controllers

The IBM Dock II cardbus bridges require some extra configuration
before Yenta is loaded in order to setup the Interrupts to be
routed properly.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index dda6099903c..7ec9fc9a9a4 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1242,6 +1242,33 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_PXH_1,	quirk_pc
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_PXHV,       quirk_pcie_pxh);
 
 
+/*
+ * Fixup the cardbus bridges on the IBM Dock II docking station
+ */
+static void __devinit quirk_ibm_dock2_cardbus(struct pci_dev *dev)
+{
+        u32 val;
+
+        /*
+         * tie the 2 interrupt pins to INTA, and configure the
+         * multifunction routing register to handle this.
+         */
+        if ((dev->subsystem_vendor == PCI_VENDOR_ID_IBM) &&
+                (dev->subsystem_device == 0x0148)) {
+                printk(KERN_INFO "PCI: Found IBM Dock II Cardbus Bridge "
+                        "applying quirk\n");
+                pci_read_config_dword(dev, 0x8c, &val);
+                val = ((val & 0xffffff00) | 0x1002);
+                pci_write_config_dword(dev, 0x8c, val);
+                pci_read_config_dword(dev, 0x80, &val);
+                val = ((val & 0x00ffff00) | 0x2864c077);
+                pci_write_config_dword(dev, 0x80, val);
+        }
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420,
+                                quirk_ibm_dock2_cardbus);
+
 static void __devinit quirk_netmos(struct pci_dev *dev)
 {
         unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;