[PATCH v7 22/24] drm: rockchip: Add VOP2 driver

[Andy Yan]

Hi Daniel:

   Remember you said our downstream vop2 driver is very slow on weston.

Would you please share the case you run ? or how can i test frame rate 
on weston?

On 3/9/22 15:37, Andy Yan wrote:
> Hi Daniel:
>
> On 3/9/22 10:03, Andy Yan wrote:
>> Hi Daniel:
>>
>> On 3/8/22 22:04, Daniel Stone wrote:
>>> On Tue, 8 Mar 2022 at 08:42, Andy Yan <andy.yan at rock-chips.com> wrote:
>>>> On 3/7/22 21:09, Daniel Stone wrote:
>>>>> On Mon, 7 Mar 2022 at 12:18, Andy Yan <andy.yan at rock-chips.com> 
>>>>> wrote:
>>>>>> When run a weston 10.0.0:
>>>>>>
>>>>>>     # export XDG_RUNTIME_DIR=/tmp
>>>>>>     # weston --backend=drm-backend.so --use-pixma --tty=2
>>>>>> --continue=without-input
>>>>>>
>>>>>> I got the following error:
>>>>>>
>>>>>> drm_atomic_check_only [PLANE:31:Smart0-win0] CRTC set but no FB
>>>>> Can you please start Weston with --logger-scopes=log,drm-backend and
>>>>> attach the output?
>>>> Please see the weston ouput here[0]
>>> Are you running with musl perhaps?
>> Do you mean the C library? I chose uClib-ng in buildroot, not use musl.
>>> Either way, please make sure your
>>> libdrm build includes commit 79fa377c8bdc84fde99c6a6ac17e554971c617be.
>>
>>
>> The upstream buildroot use libdrm2.4.109, this commit[0] if from 
>> libdrm2.4.110
>>
>> I cherry-pick this patch to my local libdrm, but has no effect, still 
>> has "atomic: couldn't commit new state" error.
>>
>> I have do a search in libdrm and weston, but find no one call 
>> drmModeAtomicMerge, is that right?
>>
>> [0]https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/167
>>
>
> With your patch applied from libdrm2.4.110, I do a make clean for 
> buidlroot, than build it again,  That's take effect.
>
> I can see only the second value (non-zero FB) of plane 31 commit to 
> the kernel. So this is works.
>
> Maybe the buidroot should update libdrm package.
>
> Thank you.
>
>>>
>>> Cheers,
>>> Daniel
>>
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