From 9840354ff429d4a392a96dff5ab6b5df609b8dc1 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Wed, 5 Apr 2017 13:39:31 +0300 Subject: usb: dwc3: Add dual-role support If dr_mode is "otg" then support dual role mode of operation. Currently this mode is only supported when an extcon handle is present in the dwc3 device tree node. This is needed to get the ID status events of the port. We're using a workqueue to manage the dual-role state transitions as the extcon notifier (dwc3_drd_notifier) is called in an atomic context by extcon_sync() and this doesn't go well with usb_del_gadget_udc() causing a lockdep and softirq warning. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/dwc3/Kconfig') diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index c5aa235863e8..aee55114d269 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -41,6 +41,7 @@ config USB_DWC3_GADGET config USB_DWC3_DUAL_ROLE bool "Dual Role mode" depends on ((USB=y || USB=USB_DWC3) && (USB_GADGET=y || USB_GADGET=USB_DWC3)) + depends on (EXTCON=y || EXTCON=USB_DWC3) help This is the default mode of working of DWC3 controller where both host and gadget features are enabled. -- cgit