Hi Mike, I'll answer to the best of my knowledge, which means only your question nr 1 will get an answer :-)
> I have been working on a usb kernel driver for the frontier designs > "tranzport" control surface. It's a pretty unique device - 20 character > LCD, 7 lights, 21 buttons, and a shuttle wheel. [...] > > OPEN QUESTIONS: > > 0) Is openusb in a usable state? > > 1) I see some usb drivers using a disconnect_mutex. Others are calling > lock_kernel. Which is more correct? (this driver is running under linux-rt) The Big Kernel Lock (BKL) is deprecated, especially for real-time operation. You should definitely use a mutex. > 2) Will I need to request specific usb minor numbers for this (raw?, Alsa?) > > 3) Is there a midi layer that is a model of it's kind? > > 4) As this fits into the "audio" bucket - is it this list or the alsa list > that would care about the patch(es) first? Or both? Best regards, Laurent Pinchart ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
