bcma: add helpers bringing PCIe hosted bus up / down

Bringing PCIe hosted bus up requires operating on host-related core.
Since we plan to support PCIe Gen 2 devices we should provide a helper
picking the correct one (PCIE or PCIE2).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c
index 53c6a8a..8dd37dc 100644
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -310,3 +310,31 @@
 {
 	pci_unregister_driver(&bcma_pci_bridge_driver);
 }
+
+/**************************************************
+ * Runtime ops for drivers.
+ **************************************************/
+
+/* See also pcicore_up */
+void bcma_host_pci_up(struct bcma_bus *bus)
+{
+	if (bus->hosttype != BCMA_HOSTTYPE_PCI)
+		return;
+
+	if (bus->host_is_pcie2)
+		pr_warn("Bringing up bus with PCIe Gen 2 host is unsupported yet\n");
+	else
+		bcma_core_pci_up(&bus->drv_pci[0]);
+}
+EXPORT_SYMBOL_GPL(bcma_host_pci_up);
+
+/* See also pcicore_down */
+void bcma_host_pci_down(struct bcma_bus *bus)
+{
+	if (bus->hosttype != BCMA_HOSTTYPE_PCI)
+		return;
+
+	if (!bus->host_is_pcie2)
+		bcma_core_pci_down(&bus->drv_pci[0]);
+}
+EXPORT_SYMBOL_GPL(bcma_host_pci_down);