On Tue, Dec 8, 2009 at 7:35 AM, Andy Walls <awa...@radix.net> wrote: > On Mon, 2009-12-07 at 20:22 -0800, Dmitry Torokhov wrote: >> On Mon, Dec 07, 2009 at 09:42:22PM -0500, Andy Walls wrote: > >> > So I'll whip up an RC-6 Mode 6A decoder for cx23885-input.c before the >> > end of the month. >> > >> > I can setup the CX2388 hardware to look for both RC-5 and RC-6 with >> > a common set of parameters, so I may be able to set up the decoders to >> > handle decoding from two different remote types at once. The HVR boards >> > can ship with either type of remote AFAIK. >> > >> > I wonder if I can flip the keytables on the fly or if I have to create >> > two different input devices? >> > >> >> Can you distinguish between the 2 remotes (not receivers)? > > Yes. RC-6 and RC-5 are different enough to distinguish between the two. > (Honestly I could pile on more protocols that have similar pulse time > periods, but that's complexity for no good reason and I don't know of a > vendor that bundles 3 types of remotes per TV card.) > > >> Like I said, >> I think the preferred way is to represent every remote that can be >> distinguished from each other as a separate input device. > > OK. With RC-5, NEC, and RC-6 at least there is also an address or > system byte or word to distingish different remotes. However creating > multiple input devices on the fly for detected remotes would be madness > - especially with a decoding error in the address bits.
I agree that creating devices on the fly has problems. Another solution is to create one device for each map that is loaded. There would be a couple built-in maps for bundled remotes - each would create a device. Then the user could load more maps with each map creating a device. Incoming scancodes are matched against all of the loaded maps and a keycode event is generated if a match occurs. This illustrates why there should an EV_IR event which communicates scancodes, without this event you can't see the scancodes that don't match a map entry. A scancode would be first matched against the map, then if there as no match an EV_IR event would be reported. > > Any one vendor usually picks one address for their bundled remote. > Hauppaugue uses address 0x1e for it's RC-5 remotes AFAICT. > > > >> Applications >> expect to query device capabilities and expect them to stay somewhat >> stable (we do support keymap change but I don't think anyone expectes >> flip-flopping). > > OK. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-input" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Jon Smirl jonsm...@gmail.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html