Merge git://git.denx.de/u-boot-sunxi

[platform/kernel/u-boot.git] / drivers / pci / pci_internal.h

diff --git a/drivers/pci/pci_internal.h b/drivers/pci/pci_internal.h
index 0867575..8b842f6 100644 (file)
--- a/drivers/pci/pci_internal.h
+++ b/drivers/pci/pci_internal.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Internal PCI functions, not exported outside drivers/pci
  *
  * Copyright (c) 2015 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef __pci_internal_h
@@ -47,4 +46,16 @@ void dm_pciauto_postscan_setup_bridge(struct udevice *dev, int sub_bus);
  */
 int dm_pciauto_config_device(struct udevice *dev);
 
+/**
+ * pci_get_bus() - Get a pointer to a bus, given its number
+ *
+ * This looks up a PCI bus based on its bus number. The bus is probed if
+ * necessary.
+ *
+ * @busnum:    PCI bus number to look up
+ * @busp:      Returns PCI bus on success
+ * @return 0 on success, or -ve error
+ */
+int pci_get_bus(int busnum, struct udevice **busp);
+
 #endif