linux-kernel - Re: [PATCH v2] drm/rockchip: vop: Fix color for RGB888/BGR888 format on VOP full

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Message-ID: <2307c147-fe6f-4e80-874c-0f306bc6ea81@kwiboo.se>
Date:   Thu, 26 Oct 2023 22:33:19 +0200
From:   Jonas Karlman <jonas@...boo.se>
To:     Christopher Obbard <chris.obbard@...labora.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Sandy Huang <hjc@...k-chips.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Tomasz Figa <tfiga@...omium.org>
Cc:     Andy Yan <andy.yan@...k-chips.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/rockchip: vop: Fix color for RGB888/BGR888 format
 on VOP full

Hi Chris,

On 2023-10-26 22:02, Christopher Obbard wrote:
> Hi Jonas,
> 
> On Thu, 2023-10-26 at 19:14 +0000, Jonas Karlman wrote:
>> Use of DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888 on e.g. RK3288, RK3328
>> and RK3399 result in wrong colors being displayed.
>>
>> The issue can be observed using modetest:
>>
>>   modetest -s <connector_id>@<crtc_id>:1920x1080-60@...4
>>   modetest -s <connector_id>@<crtc_id>:1920x1080-60@...4
>>
>> Vendor 4.4 kernel apply an inverted rb swap for these formats on VOP
>> full framework (IP version 3.x) compared to VOP little framework (2.x).
>>
>> Fix colors by applying different rb swap for VOP full framework (3.x)
>> and VOP little framework (2.x) similar to vendor 4.4 kernel.
>>
>> Fixes: 85a359f25388 ("drm/rockchip: Add BGR formats to VOP")
>> Signed-off-by: Jonas Karlman <jonas@...boo.se>
> 
> Reviewed-by: Christopher Obbard <chris.obbard@...labora.com>
> Tested-by: Christopher Obbard <chris.obbard@...labora.com>
> 
> Since you missed adding my *-by tags in v2.
> 

Thanks, and sorry about that ;-)

Regards,
Jonas