On 19-10-25 12:59:17, Roger Quadros wrote: > Peter, > > On 25/10/2019 06:13, Peter Chen wrote: > > On 19-10-23 09:17:45, Pawel Laszczak wrote: > > > Hi, > > > > > > Reviewed-by: Pawel Laszczak <pawell@xxxxxxxxxxx> > > > > Hi Roger & Pawel, > > > > Assume gadget function has already enabled, if you switch host mode > > to device mode, with your changes, where the device mode will be enabled > > again? > > When it switches from device mode to host the UDC is removed. When we switch > back from host to device mode the UDC is added, so, > > usb_add_gadget_udc_release()-> check_pending_gadget_drivers()-> > udc_bind_to_driver()->usb_udc_connect_control()->usb_gadget_connect()-> > gadget->ops->pullup() Thanks. I have another question how you decide when to store UDC name to /sys/kernel/config/usb_gadget/g1/UDC? Do you have a user daemon program to monitor VBUS or external connector? At host mode, the store operation will fail due to there is NO UDC. -- Thanks, Peter Chen
