Re: [GIT PULL] exynos-drm-next

From: Dave Airlie <airlied@gmail.com>
To: Inki Dae <inki.dae@samsung.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [GIT PULL] exynos-drm-next
Date: Tue, 3 Nov 2015 12:36:14 +1000	[thread overview]
Message-ID: <CAPM=9twmsFcR2vJq3N=NMgV1BD=mVMsY1EA73c7xLaVaNFgw0g@mail.gmail.com> (raw)
In-Reply-To: <563817B7.6070407@samsung.com>

On 3 November 2015 at 12:11, Inki Dae <inki.dae@samsung.com> wrote:
> Hi Dave,
>
> 2015년 11월 03일 08:10에 Dave Airlie 이(가) 쓴 글:
>> 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.
>
> Ok, I will request pull again excepting the patch and rebasing on top of drm-next.
>

It's not necessary to rebase I don't think, whatever base you are on
now is fine.

Dave.
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