On Mon, Feb 27, 2017 at 06:21:05PM +0100, Hans Verkuil wrote: > On 02/27/2017 06:04 PM, Russell King - ARM Linux wrote: > > I'm afraid that I walked away from this after it became clear that there > > was little hope for any forward progress being made in a timely manner > > for multiple reasons (mainly the core CEC code being out of mainline.) > > In case you missed it: the core CEC code was moved out of staging and into > mainline in 4.10. I was aware (even though I've not been publishing anything, I do keep dw-hdmi-cec and tda9950/tda998x up to date with every final kernel release.) > > If you can think of a better approach, then I'm sure there's lots of > > people who'd be willing to do the coding for it... if not, I'm not > > sure where we go from here (apart from keeping code in private/vendor > > trees.) > > For CEC there are just two things that it needs: the physical address > (contained in the EDID) and it needs to be informed when the EDID disappears > (typically due to a disconnect), in which case the physical address > becomes invalid (f.f.f.f). Yep. CEC really only needs to know "have new phys address" and "disconnect" provided that CEC drivers understand that they may receive a new phys address with no intervening disconnect. (Consider the case where EDID changes, but the HDMI driver failed to spot the HPD signal pulse - unfortunately, there's hardware out there where HPD is next to useless.) > Russell, do you have pending code that needs the ELD support in the > notifier? CEC doesn't need it, so from my perspective it can be > dropped in the first version. I was looking for that while writing the previous mail, and I think it's time to drop it - I had thought dw-hdmi-*audio would use it, or the ASoC people, but it's still got no users, so I think it's time to drop it. I have seen some patch sets go by which are making use of the notifier, but I haven't paid close attention to how they're using it or what they're using it for... as I sort of implied in my previous mail, I had lost interest in mainline wrt CEC stuff due to the glacial rate of progress. (That's not a criticism.) -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
