Hello, please give me some help on usb gadget drivers in embedded Linux.
I compiled the usb device controller driver (/drivers/usb/gadget/pxa27x_udc.c) as a module and tried to load it with the command modprobe pxa27x_udc This gives the error "No such device". Is that a mistake in the kernel source code? Or can the module only be loaded, if the USB cable is connected to a host, which has the appropriate driver for the embedded device? Or ... ?? What can I do to make it work? Here are more informations, that might be of interest: - The Kernel is installed on this hardware: - evaluation board: http://www.keith-koep.com/produkte/baseboard/con-xs.html - with module: http://www.keith-koep.com/produkte/xscale-arm-embedded/trizeps5-pxa320.html --> It has a PXA320 chip. - Kernel version is 2.6.28.7, but slightly modified with patches. Amongst other changes, the patch from http://article.gmane.org/gmane.linux.usb.general/16832 was applied. It should make the file /drivers/usb/gadget/pxa27x_udc.c fit for PXA320. On that website, they say, the patch is for another board (Nomad platform), but this has the PXA320 chip too, so it should work, shouldn't it? Do I have to consider other things, to make the driver fit to my board?? - I cross-compiled the kernel and the modules on a normal PC and copied the files onto the evaluation board. - On the Board, where I want to load the module, exist no /etc/modules path or /etc/modules.conf file or anything like that... - The command lsmod on the board, gives the following: msdos 7616 0 - Live 0xbf01a000 vfat 10432 0 - Live 0xbf012000 fat 50012 2 msdos,vfat, Live 0xbf000000 - I also know, which function returns the error "No such device" (-ENODEV), but I think, that the mistake will be somewhere else... Now I hope, that you can give me some help with that. Maybe someone knows, where I should ask this question better? Best regards. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
