usb: dwc3: pci: add basic suspend/resume support
this patch adds basic PM support for the
PCI glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index e8d7768..227d4a7 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -212,11 +212,49 @@
};
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
+#ifdef CONFIG_PM
+static int dwc3_pci_suspend(struct device *dev)
+{
+ struct pci_dev *pci = to_pci_dev(dev);
+
+ pci_disable_device(pci);
+
+ return 0;
+}
+
+static int dwc3_pci_resume(struct device *dev)
+{
+ struct pci_dev *pci = to_pci_dev(dev);
+ int ret;
+
+ ret = pci_enable_device(pci);
+ if (ret) {
+ dev_err(dev, "can't re-enable device --> %d\n", ret);
+ return ret;
+ }
+
+ pci_set_master(pci);
+
+ return 0;
+}
+
+static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
+};
+
+#define DEV_PM_OPS (&dwc3_pci_dev_pm_ops)
+#else
+#define DEV_PM_OPS NULL
+#endif /* CONFIG_PM */
+
static struct pci_driver dwc3_pci_driver = {
.name = "dwc3-pci",
.id_table = dwc3_pci_id_table,
.probe = dwc3_pci_probe,
.remove = dwc3_pci_remove,
+ .driver = {
+ .pm = DEV_PM_OPS,
+ },
};
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");