On Sat, Nov 28, 2009 at 4:46 PM, Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx> wrote: > Jon Smirl wrote: >> On Sat, Nov 28, 2009 at 3:29 PM, Stefan Richter >> <stefanr@xxxxxxxxxxxxxxxxx> wrote: >>> Jon Smirl wrote: >>>> We have one IR receiver device and multiple remotes. How does the >>>> input system know how many devices to create corresponding to how many >>>> remotes you have? >>> If several remotes are to be used on the same receiver, then they >>> necessarily need to generate different scancodes, don't they? Otherwise > ^^^^^^^^^ > I referred to scancodes, not keycodes. > >>> the input driver wouldn't be able to route their events to the >>> respective subdevice. But if they do generate different scancodes, >>> there is no need to create subdevices just for EVIOCSKEYCODE's sake. (It >>> might still be desirable to have subdevices for other reasons perhaps.) >> >> Multiple remotes will have duplicate buttons (1, 2 ,3, power, mute, >> etc) these should get mapped into the standard keycodes. You need to >> devices to key things straight. >> >> Push button 1 on Remote A. That should generate a KP_1 on the evdev >> interface for that remote. >> Push button 1 on Remote B. That should generate a KP_1 on the evdev >> interface for that remote. >> >> Scenario for this - a mutifunction remote that is controlling two >> different devices/apps. In one mode the 1 might be a channel number, >> in the other mode it might be a telephone number. >> >> The user may chose to make button 1 on both remote A/B map to KP_1 on >> a single interface. >> >> Scenario for this - I want to use two different remotes to control a >> single device. >> >> --------------------- >> >> I handled that in configds like this: >> /configfs - mount the basic configfs >> /configfs/remotes (created by loading IR support) >> mkdir /configfs/remotes/remote_A - this causes the input subdevice to >> be created, the name of it appears in the created directory. > [...] > > I'm lost. If there are two remotes sending to a single receiver, and > their sets of scancodes do not overlap, then all is fine. You can map > either set of scancodes to keycodes independently. But if their ranges You can do this, but now the events from both remotes are occurring on a single evdev device. If I assign Remote_A_1 to KP_1 what am I going to assign to Remote_B_1? > of scancodes do overlap, then even the creation of subdevices does not > help --- the driver has no way to tell which of the remotes sent the > signal in order to select the corresponding input subdevice, does it? The scancodes are always unique even among different remotes. I have three apps: mythtv, voip and home automation. How can I use a remote(s) to control these three apps? The concept of keyboard focus doesn't map very well to remote controls. My idea was to create an evdev device for each app: mythtv - Remote_A_1 mapped KP_1, etc voip - Remote_B_1 mapped KP_1, etc home automation - etc Note that there probably aren't really three remotes (A,B,C), it a multi-function remote. Picking a different context on a multi-function remote doesn't generate an event. > -- > Stefan Richter > -=====-==--= =-== ===-- > http://arcgraph.de/sr/ > -- Jon Smirl jonsmirl@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
