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

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Message-ID: <13f6dbc5d460e746352f68b001e85f870c89993d.camel@mediatek.com>
Date: Fri, 13 Sep 2024 02:56:21 +0000
From: Jason-JH Lin (林睿祥) <Jason-JH.Lin@...iatek.com>
To: CK Hu (胡俊光) <ck.hu@...iatek.com>,
	Shawn Sung (宋孝謙) <Shawn.Sung@...iatek.com>,
	"alpernebiyasak@...il.com" <alpernebiyasak@...il.com>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"wenst@...omium.org" <wenst@...omium.org>, "daniel@...ll.ch"
	<daniel@...ll.ch>, "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
	"shawn.sung@...iatek.corp-partner.google.com"
	<shawn.sung@...iatek.corp-partner.google.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "airlied@...il.com"
	<airlied@...il.com>, "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
	"angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v4 0/5] Support alpha blending in MTK display driver

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

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
> >