On Wed, 2013-10-16 at 19:46 +0200, Daniel Vetter wrote: > On Wed, Oct 16, 2013 at 06:10:41PM +0300, Artem Bityutskiy wrote: > > From: Artem Bityutskiy <artem.bityuts...@linux.intel.com> > > > > This patch changes HDMI port registration order for the BayTrail platform. > > > > The story is that in kernel version 3.11 i915 supported only one HDMI port - > > the HDMIB port. So this port ended up being HDMI-1 in user-space. > > > > But commit '6f6005a drm/i915: expose HDMI connectors on port C on BYT' > > introduced HDMIC port support. And added HDMIC registration prior to HDMIB, > > so HDMIB became HDMI-2 and HDMIC became HDMI-1. > > > > Well, this is fine as far as the kernel is concerned. i915 does not give any > > guarantees to the numbering, and has never given them. > > > > However, this breaks wayland setup in Tizen IVI. We have only one single > > HDMI > > port on our hardware, and it is connected to HDMIB. Our configuration > > relies on > > the fact that it is HDMI-1. > > > > Well, certainly this is user-space problem which was exposed with Jesse's > > patch. However, there is a reason why we have to do this assumption - we use > > touchscreen monitors and we have to associate event devices with the > > monitors, > > and this is not easy to do dynamically, so we just have a static setup. > > > > Anyway, while the user-space setup will have to be fixed regardless, let's > > chane the HDMI port registration order so that HDMIB stays HDMI-1, just > > like it > > was in 3.11. Simply because there is no strong reason for changing the > > order in > > the kernel, and it'll help setups like ours in sense that we'll have more > > time > > for fixing the issue properly. > > > > Also amend the commentary which looks a bit out-of-date. > > > > Signed-off-by: Artem Bityutskiy <artem.bityuts...@linux.intel.com> > > This makes imo sense irrespective of any userspace issues. Queued for > -next, thanks for the patch. > -Daniel
Thanks Daniel! Although, '6f6005a drm/i915: expose HDMI connectors on port C on BYT' is in 3.12-rc4, is it possible to have this patch in 3.12 release too? -- Best Regards, Artem Bityutskiy _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
