Thanks Alan, I will see configuration descriptor properly.
The first para of my e-mail says if the gadget with 2 configurations and multiple interfaces got attached to the Host, following things must be done - 1. all the respective interface drivers get loaded for a particular configuration.(e.g. if a device supports audio as well video, then both audio class interface driver and video driver should get loaded ) 2. if i do cat /proc/bus/usb/devices audio class driver and video driver of Host should detect the gadget. Thanks On Nov 22, 2007 10:29 PM, Alan Stern <[EMAIL PROTECTED]> wrote: > On Thu, 22 Nov 2007, Anil Yadav wrote: > > > Hi, > > > > I have a gadget with 2 configurations. The default configuration > > supposed to expose 2 interfaces and the other configuration supposed > > to expose a different set of interfaces. If I choose any configuration > > e.g. config 2 how should I invoke the two interfaces so that their > > respective gadget interface drivers get loaded and at host if #cat > > /proc/bus/usb/devices done it should display all the interfaces > > exposed by the gadget. > > Sorry, I can't understand that last sentence. > > > I guess composite devices work in same fashion. > > > > I have studied the zero.c source and tried with different options but > > only one interface driver is getting exposed. Do I need to do > > something in the device controller ? > > You do not need to change the device controller driver. You just have > to make sure your gadget driver sends the correct descriptors to the > host. In the reply to a Get-Config-Descriptor request, you have to > send the configuration descriptor followed by all the interface and > endpoint descriptors for that configuration. > > Alan Stern > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
