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Message-ID: <fd6fc10e-d0f6-4c53-8561-bdfd047e45f2@adamthiede.com>
Date: Sat, 5 Oct 2024 12:32:15 -0500
From: Adam Thiede <me@...mthiede.com>
To: Jason-JH Lin (林睿祥) <Jason-JH.Lin@...iatek.com>,
 Bibby Hsieh (謝濟遠) <Bibby.Hsieh@...iatek.com>,
 "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
 "djkurtz@...omium.org" <djkurtz@...omium.org>,
 Shawn Sung (宋孝謙) <Shawn.Sung@...iatek.com>,
 Nancy Lin (林欣螢) <Nancy.Lin@...iatek.com>,
 "daniel@...ll.ch" <daniel@...ll.ch>,
 "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
 CK Hu (胡俊光) <ck.hu@...iatek.com>,
 "yassine.oudjana@...il.com" <yassine.oudjana@...il.com>,
 "airlied@...il.com" <airlied@...il.com>,
 "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
 "littlecvr@...omium.org" <littlecvr@...omium.org>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: YT Shen (沈岳霆) <Yt.Shen@...iatek.com>,
 "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
 "linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
 "linux-arm-kernel@...ts.infradead.org"
 <linux-arm-kernel@...ts.infradead.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 13/14] drm/mediatek: Support DRM plane alpha in OVL

On 10/5/24 05:02, Jason-JH Lin (林睿祥) wrote:
>> > --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
>> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
>> > @@ -102,12 +102,9 @@ static inline bool is_10bit_rgb(u32 fmt)
>> >   }
>> > 
>> >   static const u32 mt8173_formats[] = {
>> > -       DRM_FORMAT_XRGB8888,
>> >          DRM_FORMAT_ARGB8888,
>> > -       DRM_FORMAT_BGRX8888,
>> >          DRM_FORMAT_BGRA8888,
>> >          DRM_FORMAT_ABGR8888,
>> > -       DRM_FORMAT_XBGR8888,
>> >          DRM_FORMAT_RGB888,
>> >          DRM_FORMAT_BGR888,
>> >          DRM_FORMAT_RGB565,
>> 
>> This is what I get on MT6735:
>> 
>> [    1.729467] mediatek-drm mediatek-drm.1.auto: [drm] bpp/depth
>> value 
>> of 32/24 not supported
>> [    1.737777] mediatek-drm mediatek-drm.1.auto: [drm] No compatible 
>> format found
>> [    1.745943] mediatek-drm mediatek-drm.1.auto: [drm] *ERROR* 
>> fbdev-dma: Failed to setup generic emulation (ret=-22)
>> 
> 
> Hi Adam, Yassine,
> 
> Please try the patches below and check if they can fix the downgrade
> issue:
> [1] Fix degradation problem of alpha blending series
> -
> https://patchwork.kernel.org/project/linux-mediatek/list/?series=893634
> [2] drm/mediatek: Fix XRGB format breakage for blend_modes unsupported
> SoCs
> -
> https://patchwork.kernel.org/project/linux-mediatek/patch/20241005095234.12925-1-jason-jh.lin@mediatek.com/
> 
> Regards,
> Jason-JH.Lin

Jason,
I've built 6.12-rc1 with those patch series applied. (I am also not 
reverting the other commit.) This fixes the issue - I'm able to see the 
console now. Thank you! Hopefully these can go into 6.12?
- Adam Thiede

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