Commits
Peter Chen committed 2174b1a913e
ENGR00162583-2 usb driver: avoid class driver access register after usb is off - An well-behavior class driver should disable their endpoints after being notified disconnect with host, we use all endpoints are stopped (ep->stopped) to indicates the class driver will not visit device driver any more. the ep-stopped will be initialized as 1 for non-control endpoint it will be 0 after fsl_ep_enable, and be 1 after fsl_ep_disable. Where is a non-sleep wait routine at disconnect event for waiting all endpoints are stopped - Some controller's (like i.mx6q) DP will change from J to SE0 slowly after the cable disconnects with host, in that case there will be a wakeup interrupt after driver enables the wakeup interrupt. For i.mx6q, there is a discharge routine for DP after the disconnection. - Should not wait vbus to low during first otg switch, as the wait will be timeout when the usb cable is connecting to host. Signed-off-by: Peter Chen <peter.chen@freescale.com>