linux-kernel - Re: [PATCH v4 0/5] Support alpha blending in MTK display driver

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Message-ID: <69776448-0328-4880-9108-54466e40ddd9@gmail.com>
Date: Fri, 13 Sep 2024 08:40:23 +0300
From: Alper Nebi Yasak <alpernebiyasak@...il.com>
To: linux-mediatek@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, Chen-Yu Tsai <wenst@...omium.org>,
 Daniel Vetter <daniel@...ll.ch>, Philipp Zabel <p.zabel@...gutronix.de>,
 Hsiao Chien Sung <shawn.sung@...iatek.corp-partner.google.com>,
 dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org,
 David Airlie <airlied@...il.com>, Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, CK Hu (胡俊光)
 <ck.hu@...iatek.com>, Shawn Sung (宋孝謙)
 <Shawn.Sung@...iatek.com>, Jason-JH Lin (林睿祥)
 <Jason-JH.Lin@...iatek.com>
Subject: Re: [PATCH v4 0/5] Support alpha blending in MTK display driver

Hi,

On 2024-09-13 05:56 +03:00, Jason-JH Lin (林睿祥) wrote:
> Hi Alper,
> 
> I think that's a platform issue because it works find in my MT8188
> platform, but I don't have any MT8173 platform.
> 
> Can you help me test the fix patch in your MT8173 platform?
> I'll provide a fix patch in 2 weeks via Google Chat.
> 
> Regards,
> Jason-JH.Lin

I replied over Google Chat, but to make it clear for others on the
mailing list: Yes, I'll try to test patches when you send them.

> On Fri, 2024-09-13 at 01:25 +0000, CK Hu (胡俊光) wrote:
>> Hi, Jason:
>> 
>> Please help to fix this issue.
>> Otherwise, I would revert this series.
>> 
>> Regards,
>> CK
>> 
>> On Thu, 2024-09-12 at 23:29 +0300, Alper Nebi Yasak wrote:
>> >   
>> > External email : Please do not click links or open attachments
>> > until you have verified the sender or the content.
>> >  Hi,
>> > 
>> > On 2024-07-31 16:34 +03:00, Chun-Kuang Hu wrote:
>> > > Hi, Shawn:
>> > > 
>> > > Hsiao Chien Sung via B4 Relay
>> > > <devnull+shawn.sung.mediatek.com@...nel.org> 於 2024年7月17日 週三
>> > > 下午1:24寫道：
>> > > > 
>> > > > Support "Pre-multiplied" and "None" blend mode on MediaTek's
>> > > > chips by
>> > > > adding correct blend mode property when the planes init.
>> > > > Before this patch, only the "Coverage" mode (default) is
>> > > > supported.
>> > > 
>> > > For the whole series, applied to mediatek-drm-next [1], thanks.
>> > > 
>> > > [1] 
>> > > https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next
>> > 
>> > I am seeing broken colors on an MT8173 Chromebook with next-
>> > 20240912,
>> > which goes away if I git-revert this series (commits 1f66fe62cc09
>> > eb17c5909481 a3f7f7ef4bfe 59e9d9de25f0 4225d5d5e779).
>> > 
>> > To illustrate, I took a picture [1] of some color mixing diagrams
>> > from
>> > Wikipedia [2]. Do you have an idea of what goes wrong?
>> > 
>> > (I'm busy with too many things so I don't want to debug it now...)
>> > 
>> > [1] https://i.imgur.com/tNFvovB.jpeg
>> > [2] https://en.wikipedia.org/wiki/Color_space#Generic