From: Jianmin Lv <lvjianmin@xxxxxxxxxxx>
In LS7A, multifunction device use same pci PIN and different
irq for different function, so fix it for standard pci PIN
usage.
Signed-off-by: Jianmin Lv <lvjianmin@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
drivers/pci/quirks.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 10b3b2057940..6ab4b3bba36b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -242,6 +242,23 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,
DEV_LS7A_LPC, loongson_system_bus_quirk);
+static void loongson_pci_pin_quirk(struct pci_dev *dev)
+{
+ static const struct pci_device_id devids[] = {
+ { PCI_VDEVICE(LOONGSON, DEV_PCIE_PORT_0) },
+ { PCI_VDEVICE(LOONGSON, DEV_PCIE_PORT_1) },
+ { PCI_VDEVICE(LOONGSON, DEV_PCIE_PORT_2) },
+ { 0, },
+ };
+
+ if (pci_match_id(devids, dev)) {
+ u8 fun = dev->devfn & 7;
+
+ dev->pin = 1 + (fun & 3);
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LOONGSON, PCI_ANY_ID, loongson_pci_pin_quirk);
+
static void loongson_mrrs_quirk(struct pci_dev *dev)
{
struct pci_bus *bus = dev->bus;
--
2.27.0
