Fwd: [RFC] g_serial: Real tty device passthrough.
"Felipe Balbi" <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
---------- Forwarded message ---------- From: Felipe Balbi <[email protected]> Date: Mar 9, 2007 2:19 PM Subject: Re: [linux-usb-devel] [RFC] g_serial: Real tty device passthrough. To: Stefan Schmidt <[email protected]> On 3/8/07, Stefan Schmidt <[email protected]> wrote: > Hello. > > We have a linux smartphone here with the GSM modem on /dev/ttySAC0 . > As now like to make this tty available to the host through g_serial. > This allows us faster development and testing. Ok, this can be done but g_serial was developed to use Major number 127... I don't know that you could just pass another device to the module... you should write some glue module between g_serial and your "GSM" module. And maybe you should modify g_serial a little bit for this to work fine. If you could show us some of the code that creates the /dev/ttySAC0 maybe we could point you something. Which smartphone are you using? Which model? Manufacturer? Which linux-kernel? etc... > The first idea we had was to splice /dev/ttygs* and /dev/ttySAC0 > together in phone userspace. But how can we handle things like > baudrate change on the host, etc. The passthrough should be as > transparent as possible. > > We now think about a solution like the ine used in file_storage.c . > > Let the g_serial driver directly communicate with the device. Loading > the driver with something like > > modprobe g_serial device=ttySAC0 This you should implement... g_serial doesn't yet have a way for Major/Minor number changing... > should route the whole communication to /dev/ttySAC0 instead of > /dev/ttygs* . > > Anybody already worked on something like this? I don't have any smartphone to test... but we can chat about it... -- Best Regards, Felipe Balbi [email protected] -- Best Regards, Felipe Balbi [email protected] ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel