Re: [GIT PULL] exynos-drm-next

[Dave Airlie <airlied@gmail.com>]

On 28 October 2015 at 22:37, Inki Dae <inki.dae@samsung.com> wrote:
> Hi Daniel,
>
> 2015년 10월 28일 20:52에 Daniel Stone 이(가) 쓴 글:
>> Hi Inki,
>>
>> On 28 October 2015 at 11:16, Inki Dae <inki.dae@samsung.com> wrote:
>>> 2015년 10월 28일 20:00에 Daniel Stone 이(가) 쓴 글:
>>>> On 28 October 2015 at 10:58, Daniel Stone <daniel@fooishbar.org> wrote:
>>>>> Is there any open user we can review?
>>>>
>>>> For clarity, what I meant by these parts was: is there somewhere we
>>>> can take TBM + Xorg/Wayland for Exynos hardware? Even better if it's
>>>> able to run on commercially-available parts such as 5422/5800
>>>> (Chromebook 2, ODROID-XU3). As you know, it is quite
>>>
>>> Yes, you could get TBM + Xorg/Wayland for Exynos hardware - ODROID-XU3 through below link,
>>>         https://review.tizen.org/git/
>>>
>>> And below is Linux 4.0 kernel for ODROID-XU3/XU4.
>>>         https://review.tizen.org/git/?p=platform/kernel/linux-exynos.git;a=shortlog;h=refs/heads/tizen
>>
>> Thanks very much for the pointer. I managed to find the exynos Xorg
>> driver in use, but unfortunately the only tbm backend I could find is
>> labelled for exynos4412. Is this backend also usable on 5xxx/XU3, or
>> is that backend really only for Trats2, and the 5xxx backend is
>> private?
>
> Prefix name may be strange but below libtbm backend is used for Trats2 and Odoid-XU3/4.
> Actually, changing the backend name to 'exynos' instead of 'exynosxxxx' would be more reasonable.
>         https://review.tizen.org/git/?p=platform/adaptation/samsung_exynos/libtbm-exynos4412.git;a=summary
>
>>
>> Anyway, regardless of that, as far as I can tell, the Xorg driver uses
>> TBM to do buffer mapping, and the TBM backend uses DUMB_MAP rather
>> than the new call here. Is there something I'm missing?
>
> You are right. I found that the patch applied to the backend exists in local branch.
> I thought the patch exists already in tizen.org because we had already test.
> Anyway, the patch will be merged soon.
>
>>
>> (In any case, having separate-from-Tizen userspace graphics stack
>> repositories would be very welcome, I think: there are a huge number
>> of repositories for Tizen - something like six copies of libtbm alone
>> - and it is unclear how to build them on a generic userspace / if they
>> will actually build at all / if they will run on mainline kernels.
>> Having a separate tree will make it very clear to people how to get
>> things working on top of a mainline/staged-for-next kernel.)
>
> One libtbm is common library used by Tizen platform, which has Tizen standard API and
> the interfaces of the libtbm will never changed. Others are all backend libraries.
> In fact, Tizen supports various boards based on various SoC such as snapdragon, allwinner,
> spreadtrum and Exynos. Among them, only Exynos will run on mainline kernels as of now.
>
> Thanks,
> Inki Dae
>

Daniel,

Is there still an issue here,

Inki can you send me a pull request without the problematic patch so
we can at least merge
all the other works you've lined up. We can add this on top once
people are happy.

Dave.
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