On Wed, Mar 20, 2013 at 08:04:29PM -0400, jonsmirl@xxxxxxxxx wrote: > On Wed, Mar 20, 2013 at 7:26 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Tue, Mar 19, 2013 at 11:30:05AM -0400, jonsmirl@xxxxxxxxx wrote: > >> How can you achieve plug and play for a ft2232 based USB serial device > >> implementing 802.15.4 networking? > >> > >> The device has a 802.15.4 SOC with a UART attached to a ft2232. With > >> firmware loaded the only thing it can do is talk the 802.15.4 tty line > >> discipline, it is not a general purpose serial port. > >> > >> Right now the device works by plugging it in and it appears as a > >> generic USB serial device like ttyUSB0. You then run a user space app > >> which sets the line discipline, holds the port open and attaches it to > >> the 6lowpan implementation in the networking code. But doing that is > >> inconvenient and users needs to be trained to do it. Much simpler if > >> we could just plug the device in and it worked. > >> > >> We can add a EEPROM to the ft2232 to give it a unique USB ID. Is it > >> possible to make a kernel driver that see this ID, sets the line > >> discipline and wires the serial port directly into the networking > >> code? > > > > Yes, you can do that. > > Is there an existing driver in the kernel that does this? > So far all of the ones I've checked still need a user space app. Look at the bluetooth drivers, they have their own line dicipline I think. greg k-h -- 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
