[PATCH hwc v2 1/6] drm_hwcomposer: Remove threading

[Chih-Wei Huang]

2017-09-29 16:44 GMT+08:00 Robert Foss <robert.foss at collabora.com>:
> On Fri, 2017-09-29 at 13:49 +0800, Chih-Wei Huang wrote:
>> 2017-09-29 5:29 GMT+08:00 Rob Herring <robh at kernel.org>:
>> > Perhaps just leave the current state as a separate branch.
>>
>> Did you mean we maintain the branch in our repo?
>> (that's what we do now, but I hope to avoid that)
>>
>> Or fd.o could help to maintain the two branches (HWC1 and HWC2)?
>
> Android later than O will not support HWC1 (as far as I understand it),
> so HWC2 is the way forward.

If all x86 GPUs we want to support
can work with drm_hwcomposer,
I'm happy to switch to HWC2.
However it seems impossible at this moment. :(

> Furthermore I think targeting aosp/master at all time is the right
> thing to do for drm_hwcomposer.
>
> I for one am less than keen on maintaining branch that is incompatible
> with aosp/master upstream.
>
> Ideally we wouldn't maintain a compile time switch either, not on
> principle but because of the development overhead it causes.
> We have very finite resources contributing to drm_hwcomposer.
> If it was cheap&&easy to support old Android versions we should, but I
> don't think it is.

My point is not to support old Android versions,
but to support old(?) GPUs that can't work with drm_hwcomposer.


> I would suggest maintaining a HWC1 fork downstream as the way forward.
> But any input is welcome.



-- 
Chih-Wei
Android-x86 project
http://www.android-x86.org