1 files changed, 16 insertions, 1 deletions

diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index d10cc6ee1a68..e5ebe56fb0c5 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -310,8 +310,10 @@ static void oxygen_restore_eeprom(struct oxygen *chip,
 
 static void configure_pcie_bridge(struct pci_dev *pci)
 {
-        enum { PI7C9X110 };
+        enum { PEX811X, PI7C9X110 };
         static const struct pci_device_id bridge_ids[] = {
+                { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
+                { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
                 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
                 { }
         };
@@ -328,6 +330,19 @@ static void configure_pcie_bridge(struct pci_dev *pci)
                 return;
 
         switch (id->driver_data) {
+        case PEX811X:   /* PLX PEX8111/PEX8112 PCIe/PCI bridge */
+                pci_read_config_dword(bridge, 0x48, &tmp);
+                tmp |= 1;       /* enable blind prefetching */
+                tmp |= 1 << 11; /* enable beacon generation */
+                pci_write_config_dword(bridge, 0x48, tmp);
+
+                pci_write_config_dword(bridge, 0x84, 0x0c);
+                pci_read_config_dword(bridge, 0x88, &tmp);
+                tmp &= ~(7 << 27);
+                tmp |= 2 << 27; /* set prefetch size to 128 bytes */
+                pci_write_config_dword(bridge, 0x88, tmp);
+                break;
+
         case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */
                 pci_read_config_dword(bridge, 0x40, &tmp);
                 tmp |= 1;       /* park the PCI arbiter to the sound chip */