usb: dwc2: Change hub-control to allow hibernation

Affected cases:
ClearPortFeature's
 USB_PORT_FEAT_SUSPEND

SetPortFeature's
 USB_PORT_FEAT_SUSPEND
 USB_PORT_FEAT_RESET

Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc2/hcd.c

@@ -3506,8 +3506,12 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
 			dev_dbg(hsotg->dev,
 				"ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
 
-			if (hsotg->bus_suspended)
-				dwc2_port_resume(hsotg);
+			if (hsotg->bus_suspended) {
+				if (hsotg->hibernated)
+					dwc2_exit_hibernation(hsotg, 0, 0, 1);
+				else
+					dwc2_port_resume(hsotg);
+			}
 			break;
 
 		case USB_PORT_FEAT_POWER:
@@ -3715,7 +3719,10 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
 				"SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
 			if (windex != hsotg->otg_port)
 				goto error;
-			dwc2_port_suspend(hsotg, windex);
+			if (hsotg->params.power_down == 2)
+				dwc2_enter_hibernation(hsotg, 1);
+			else
+				dwc2_port_suspend(hsotg, windex);
 			break;
 
 		case USB_PORT_FEAT_POWER:
@@ -3727,6 +3734,9 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
 			break;
 
 		case USB_PORT_FEAT_RESET:
+			if (hsotg->params.power_down == 2 &&
+			    hsotg->hibernated)
+				dwc2_exit_hibernation(hsotg, 0, 1, 1);
 			hprt0 = dwc2_read_hprt0(hsotg);
 			dev_dbg(hsotg->dev,
 				"SetPortFeature - USB_PORT_FEAT_RESET\n");