On Tue, May 02, 2017 at 12:47:46PM +0530, Anshuman Tripathy wrote: > Hello All, > > > I am working on wanboard and the processor there is IMX6solo series . > The USB controller is chipidea one . > > The drivers are all chipidea opensource driver. > > > I have a requirement of connecting Iphone to it , where it will launch > carplay on detection of carplay device . > > The flow is : > > 1> iphone connection to USB port > 2> I have a user application which will be spawning on USB port for > any change and once get it will check the type of device by libusb > calls . > 3> once detected as apple device , role switch for USB happens like my > USB controller wil be switched to gadget mode and on disconnection it > switch back to host mode (This is apple carplay specification) > > The problem here is if I connect and disconnect quickly , the udc_irq > does not come atall . That means I feel the enumeration process for > the device not completed and the disconnection happened . Due to this > disconnect event does not come and my USB controller stays in gadget > mode only . > > Any reason why the interrupt does not come atall ? atleast I was > expecting the interrupt should be coming with some error which might > not have been handled in driver . > There is an update for role switch at v4.12-rc1, please use that method. Besides, please make sure the app reports connection and disconnection correctly. -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
