On Wed, 7 Mar 2012, feng wind wrote: > Hi , > There is a ISP1582 device on my board that is a hi-speed usb > peripheral controller. I want to design a driver which can make PC > access mmc on my board with command "modprobe g_file_storage > file=/dev/mmcblk0p1". But I have some problems about designing a > ISP1582 driver. > > - What fuctions does this driver need to implement ? > I roughly devide this driver into two parts. One implements USB > enumeration and the other implements bulk transmission. > Am I right? I am uncertain that what functions are covered by gadget codes. > > - Would you give me some example source code! > > Any comments is warm welcome ! You need to write a driver that conforms to the gadget API. See http://www.linux-usb.org/gadget/ It's a little out of date, but it will help you get started. Also read the documentation comments in include/linux/usb/gadget.h. There are lots of similar drivers you can study in drivers/usb/gadget/. Alan Stern -- 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
