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-rw-r--r--drivers/pci/pci-uclass.c8
-rw-r--r--include/pci.h8
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index e38e0b2..f3f5f00 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -53,6 +53,14 @@ struct pci_controller *pci_bus_to_hose(int busnum)
return dev_get_uclass_priv(bus);
}
+struct udevice *pci_get_controller(struct udevice *dev)
+{
+ while (device_is_on_pci_bus(dev))
+ dev = dev->parent;
+
+ return dev;
+}
+
pci_dev_t pci_get_bdf(struct udevice *dev)
{
struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
diff --git a/include/pci.h b/include/pci.h
index ec2d104..f3dda70 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -1123,6 +1123,14 @@ ulong pci_conv_size_to_32(ulong old, ulong value, uint offset,
enum pci_size_t size);
/**
+ * pci_get_controller() - obtain the controller to use for a bus
+ *
+ * @dev: Device to check
+ * @return pointer to the controller device for this bus
+ */
+struct udevice *pci_get_controller(struct udevice *dev);
+
+/**
* struct dm_pci_emul_ops - PCI device emulator operations
*/
struct dm_pci_emul_ops {