Implement better support for USB controller suspend and resume.

This patch should remove the need for kldunload of USB
controller drivers at suspend and kldload of USB controller
drivers at resume.

This patch also fixes some build issues in avr32dci.c

MFC after:	2 weeks

1 files changed, 25 insertions, 4 deletions

diff --git a/sys/dev/usb/controller/uss820dci.c b/sys/dev/usb/controller/uss820dci.c
index b98043e..612bc81 100644
--- a/sys/dev/usb/controller/uss820dci.c
+++ b/sys/dev/usb/controller/uss820dci.c
@@ -1513,16 +1513,16 @@ uss820dci_uninit(struct uss820dci_softc *sc)
 	USB_BUS_UNLOCK(&sc->sc_bus);
 }
 
-void
+static void
 uss820dci_suspend(struct uss820dci_softc *sc)
 {
-	return;
+	/* TODO */
 }
 
-void
+static void
 uss820dci_resume(struct uss820dci_softc *sc)
 {
-	return;
+	/* TODO */
 }
 
 static void
@@ -2360,6 +2360,26 @@ uss820dci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc
 	}
 }
 
+static void
+uss820dci_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
+{
+	struct uss820dci_softc *sc = USS820_DCI_BUS2SC(bus);
+
+	switch (state) {
+	case USB_HW_POWER_SUSPEND:
+		uss820dci_suspend(sc);
+		break;
+	case USB_HW_POWER_SHUTDOWN:
+		uss820dci_uninit(sc);
+		break;
+	case USB_HW_POWER_RESUME:
+		uss820dci_resume(sc);
+		break;
+	default:
+		break;
+	}
+}
+
 struct usb_bus_methods uss820dci_bus_methods =
 {
 	.endpoint_init = &uss820dci_ep_init,
@@ -2370,4 +2390,5 @@ struct usb_bus_methods uss820dci_bus_methods =
 	.clear_stall = &uss820dci_clear_stall,
 	.roothub_exec = &uss820dci_roothub_exec,
 	.xfer_poll = &uss820dci_do_poll,
+	.set_hw_power_sleep = uss820dci_set_hw_power_sleep,
 };