Adding relevant mailing lists and people. Please don't send private mails to maintainers ;-) On Fri, Mar 4, 2016 at 1:47 PM, Chih-Wei Huang <cwhuang@xxxxxxxxxxxxxxx> wrote: > Hi Daniel, > This is the Android-x86 project. > I'm looking for info about atomic mode-setting drivers > and then found your presentation at > http://www.x.org/wiki/Events/XDC2015/Program/xdc-2015.pdf > > Especially page 16 talks about the Android support, > exactly what I want. > > It said "no one has an open-source atomic hwc". > Actually there is one in the AOSP 6.0 release: > > https://android.googlesource.com/platform/external/drm_hwcomposer > > It's developed by the Chromium team. > An update repo is here: > https://chromium.googlesource.com/chromiumos/drm_hwcomposer Yup, my presentation is already outdated - the latest one for LCA2016 mentions that hwc exists. > Contributing instructions are here: > https://sites.google.com/a/chromium.org/dev/contributing-to-drm_hwcomposer > > We are trying to enable the drm_hwcomposer for Android-x86. > However, it requires atomic mode-setting drivers > which seems are not ready in the vanilla kernel 4.4, > the kernel we are using now. > > Unfortunately none of us is an expert of kernel drm drivres. > Could you give me a brief status of the > current atomic mode-setting drivers in vanilla kernel? > What are still missing? fences? deadlock? > More important, how much effort do we need > to make them work with AOSP's drm_hwcomposer? There's a pile of drivers, but for classic x86 desktop only i915.ko, and that is still not yet enabled by default. i915.nuclear_pageflip=1 will give you experimental atomic support but not sure whether that's good enough for hwcomposer. Fences are being worked on in upstream kernel, but nothing to show yet.. Otherwise I don't know what's all needed to make it, I haven't had a chance to play around with it yet. > > More discussion about it can be found in > our devel group: > https://groups.google.com/d/msg/android-x86-devel/RErWaXk3b7g/g_OSPGf4AwAJ Please include that mailing list too, to make sure everyone is on board. Thanks, Daniel > > Thank you! > > Best regards, > -- > Chih-Wei > Android-x86 project > http://www.android-x86.org -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
