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

[Andy Yan]

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

>
> Cheers,
> Daniel