Hi Greg, >>>> 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. yes we do. And we also have a userspace tool (hciattach) to setup the line discipline. However the automatic setup can be easily automated with a simple udev rule. Regards Marcel -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
