linux-kernel - Re: [PATCH v2 3/4] drm/msm/dpu: Add DPU_INTF_DATA

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Message-ID: <fb6lhe5ure5jpzorvjb7zjz65qiso5yz476ir6apfb4mehyj2s@uk4s3pzeu4uv>
Date:   Mon, 8 May 2023 23:47:59 +0200
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Jessica Zhang <quic_jesszhan@...cinc.com>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/4] drm/msm/dpu: Add DPU_INTF_DATA_COMPRESS feature
 flag

On 2023-05-07 22:21:35, Dmitry Baryshkov wrote:
<snip>
> > Konrad: Your SM6350/SM6375 series v3 [1] switched from INTF_SC7180_MASK
> > to INTF_SC7280_MASK to enable HCTL on SM6375, but that will now
> > erroneously also receive this feature flag and write the new
> > DATA_COMPESS mask even if it's DPU 6.9 (< 7.x where it got added).
> 
> Yeah, that's why I had the idea of including at least the DPU major in 
> the mask name.

Yes please, that would be much more clear.  We could even drop the SoC
name altogether.

> It looks like we should enable DPU_DATA_HCTL_EN at least for 
> sm8150/sm8250 (and other DPU 6.x) too. I am not sure if it is present on 
> sdm845.

Agreed, thanks for sending that patch!

<snip>

- Marijn