Dmitry Torokhov wrote: > On Thu, Jul 24, 2008 at 01:45:31PM +0100, Jonathan Cameron wrote: >>>> At the moment the big missing element of the subsystem is an easy way of >>>> querying what is there. (proc interface similar to that for the input >>>> subsystem) >>> You mean /sys/class/input/, right? Indeed, something inspired by the >>> input subsystem should work well. >> No, I meant /proc/bus/input/devices which gives machine readable description >> of all devices registered with the input subsystem and their capabilities. >> > > /proc/bus/input is a legacy interface (pre-sysfs). Newer subsystems > should try to stay in /sys/. Ah, I'd assumed it was there to provide a centralized way of discovering what was there. I guess it's just a matter of scanning your way through the contents of /sys/class/input (and equivalent iio) then to find out what is present and what is supported by each device. Messier in a sense but guess it will work. Ah well, Jonathan