On Thu September 6 2012 06:09:44 Jun Nie wrote: > 2012/9/5 Hans Verkuil <hverkuil@xxxxxxxxx>: > > On Wed 5 September 2012 10:04:41 Jun Nie wrote: > >> Is there any summary for this summit or presentation material? I am > >> looking forward for some idea on CEC. It is really complex in > >> functionality. > >> Maybe other guys is expecting simiar fruite from summit too. > > > > Yes, there will be a summit report. It's not quite finished yet, I think. > > > > With respect to CEC we had some useful discussions. It will have to be a > > new class of device (/dev/cecX), so the userspace API will be separate from > > drm or v4l. > > > > And the kernel will have to take care of the core CEC protocol w.r.t. control > > and discovery due to the HDMI 1.4a requirements. > > > > I plan on starting work on this within 1-2 weeks. > > > > My CEC presentation can be found here: > > > > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp > > > > Regards, > > > > Hans > > Thanks for quick response! It's good to know that CEC is independent > with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is > also deserved to have independent management in both hardware signal > and functionality. Someone also expressed similar thoughts before. > Will remote control protocal parsing are done in userspace reference > library? Or not decided yet? Are you referring to the remote control pass-through functionality? I don't know yet whether that will go through a userspace library or through the RC kernel subsystem, or possibly both. Most of the other non-system messages will go to a userspace library. But I haven't started coding yet, so it is very early days :-) The main thing is that at least I now have a high-level design that I can start to work with. Regards, Hans -- 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
