2012/3/7, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: > 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 It's a little out of date, but it will help you get started.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 > > You mean designing a driver that includes gadget section and hardware handle. My idea is that ISP 1582 driver can use existed gadget driver such as file_storage.c. So ISP1582 driver may just handle stuffs related to hardware. I think it becomes relatively simple. Is that practicable? -- 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
