Please make sure to keep all parties CCed in your replies. On Wed, Mar 20, 2013 at 07:18:16PM +0400, Sergei Organov wrote: > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > writes: > > > On Wed, 20 Mar 2013, Sergei Organov wrote: > > > >> > >> >> What is recomended driver to use for a USB device that provides just > >> >> 2 bulk end-points, in and out, to create a TTY to talk to it? Exact > >> >> data formats that are used are application-specific, so only generic IO > >> >> TTY-alike device (with no control) is required from the kernel. > >> >> Searching through the lists and Internet uncovered multiple posts of > >> >> why "usbserial" is a wrong driver for this purpose, but nowhere did I > >> >> find what the right alternative is. > >> > >> > what shows lsusb (e.g. what is TTY PID)? What is chip inside? Usually > >> > the chips are either FTDI or something similar, and then ftdi driver > >> > should work (coupled with right parameters for "unsuported" IDs - you > >> > can then propose patch once you will see the device working). > >> > >> Thanks, but this is _not_ FTDI or any other widely-known device. It's not > >> usb-to-serial converter or modem of any kind at all. Just a device to > >> which one can talk over 2 USB bulk end-points, and I want to get a TTY > >> to talk to it. Maybe some user-space alternative? > > > > For something like this, usb-serial may indeed be the best solution, > > even though it has relatively low throughput. I don't think any of the > > more specific drivers are suited to this protocol. > > OK, thanks, get it. > > Now, if I'd like to adresss the problem from the other end, i.e., from > the USB device side, what's the simplest thing I can implement so that > some of the existing drivers can work with the device? Use the generic driver, or add your device id to one of the pure wrapper drivers (such as zio or funsoft). > What is the right thing to implement (provided it does not match the > simplest one)? If it's not really related to any of the existing pure wrapper drivers, add a new wrapper driver. What kind of device are we talking about here? Would there be any users of a mainline-driver? Johan -- 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
