> The following patch: > > http://fett.net/m/alsa/alsa-0.9.0rc1-unitor8.patch > > implements a driver for the Emagic Unitor family of multiport MIDI > interfaces. Only serial connection is supported. You need to rerun the > autoconf toolchain after applying the patch. > > The driver is heavily based on serial-u16550.c, which may be the wrong > concept. A more correct concept seems to have a generic-serial.c and > generic-usb.c, which only implement a communication channel. The interface > drivers could then load&use them and only implement their own > init/port-select/whatever dialect. Lots of MIDI interfaces come with both > USB and serial connectors nowadays. Any thoughts on this?
This is nice. What documentation did you use for writing the driver? I think a driver for interfaces like the unitor should not be in the kernel. The standard serial port driver already allows access to the device. Also, using a kernel driver does not allow using many different serial hardware, right? A solution could be alter libasound to support non-kernel drivers. Or use a loopback device in the kernel. Perhaps only supporting the alsa sequencer is an option. I am myself still working on a library for MIDI i/o that uses plugins for device access and IMHO provides a better interface than alsa rawmidi. --martijn
