zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/acpi/pci_bind.c b/ap/os/linux/linux-3.4.x/drivers/acpi/pci_bind.c
new file mode 100644
index 0000000..2ef0409
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/acpi/pci_bind.c
@@ -0,0 +1,120 @@
+/*
+ * pci_bind.c - ACPI PCI Device Binding ($Revision: 2 $)
+ *
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/pci-acpi.h>
+#include <linux/acpi.h>
+#include <linux/pm_runtime.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+#define _COMPONENT ACPI_PCI_COMPONENT
+ACPI_MODULE_NAME("pci_bind");
+
+static int acpi_pci_unbind(struct acpi_device *device)
+{
+ struct pci_dev *dev;
+
+ dev = acpi_get_pci_dev(device->handle);
+ if (!dev)
+ goto out;
+
+ device_set_run_wake(&dev->dev, false);
+ pci_acpi_remove_pm_notifier(device);
+
+ if (!dev->subordinate)
+ goto out;
+
+ acpi_pci_irq_del_prt(dev->subordinate);
+
+ device->ops.bind = NULL;
+ device->ops.unbind = NULL;
+
+out:
+ pci_dev_put(dev);
+ return 0;
+}
+
+static int acpi_pci_bind(struct acpi_device *device)
+{
+ acpi_status status;
+ acpi_handle handle;
+ struct pci_bus *bus;
+ struct pci_dev *dev;
+
+ dev = acpi_get_pci_dev(device->handle);
+ if (!dev)
+ return 0;
+
+ pci_acpi_add_pm_notifier(device, dev);
+ if (device->wakeup.flags.run_wake)
+ device_set_run_wake(&dev->dev, true);
+
+ /*
+ * Install the 'bind' function to facilitate callbacks for
+ * children of the P2P bridge.
+ */
+ if (dev->subordinate) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Device %04x:%02x:%02x.%d is a PCI bridge\n",
+ pci_domain_nr(dev->bus), dev->bus->number,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)));
+ device->ops.bind = acpi_pci_bind;
+ device->ops.unbind = acpi_pci_unbind;
+ }
+
+ /*
+ * Evaluate and parse _PRT, if exists. This code allows parsing of
+ * _PRT objects within the scope of non-bridge devices. Note that
+ * _PRTs within the scope of a PCI bridge assume the bridge's
+ * subordinate bus number.
+ *
+ * TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
+ */
+ status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
+ if (ACPI_FAILURE(status))
+ goto out;
+
+ if (dev->subordinate)
+ bus = dev->subordinate;
+ else
+ bus = dev->bus;
+
+ acpi_pci_irq_add_prt(device->handle, bus);
+
+out:
+ pci_dev_put(dev);
+ return 0;
+}
+
+int acpi_pci_bind_root(struct acpi_device *device)
+{
+ device->ops.bind = acpi_pci_bind;
+ device->ops.unbind = acpi_pci_unbind;
+
+ return 0;
+}