linux-kernel - Re:Re: [PATCH v6] rockchip/drm: vop2: add support for gamma LUT

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Message-ID: <-rVNN65kgfRzFJBJDIwQF3jNMfXIZFP8GibtUgB_p-eWGLBkNZhYFr-BXEas8IjjofHxWQUqNicUSTp5rb9XmuLi35XsDd0PzJPz79j-M-8=@proton.me>
Date: Mon, 28 Oct 2024 16:40:46 +0000
From: Piotr Zalewski <pZ010001011111@...ton.me>
To: Andy Yan <andyshrk@....com>
Cc: hjc@...k-chips.com, heiko@...ech.de, andy.yan@...k-chips.com, maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch, dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, skhan@...uxfoundation.org, Daniel Stone <daniel@...ishbar.org>, Dragan Simic <dsimic@...jaro.org>, Diederik de Haas <didi.debian@...ow.org>
Subject: Re:Re: [PATCH v6] rockchip/drm: vop2: add support for gamma LUT

On Monday, October 28th, 2024 at 7:42 AM, Andy Yan <andyshrk@....com> wrote:

> Hi Piotr，

Hi Andy

> Tested on top of Linux 6.12-rc5 with rk3566-box-demo in a buildroot + weston environment:
> weston --backend=drm-backend.so -i 0 --continue-without-input
> weston-simple-egl

Thank you for testing it!

> simple-egl will draw a triangle on the desktop.
> After the patch applied，the triangle will flicker again and agian。
> So it break some function。

Did you have gamma on? The screen flickered for me when I ran something 
writing gamma LUT frequently because of disable step I reckon.

> I've been quite busy lately, and it will take some time before I can analyze what the specific reason is.

Np, I will try to reproduce this behavior with weston on Pinetab2 in the
meantime.

Best Regards, Piotr Zalewski