linux-kernel - Re: [Freedreno] [PATCH 06/11] drm/msm/disp/dpu1: Add DSC support in hw

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Message-ID: <YV2U511LhQ2Ea+bA@matsya>
Date:   Wed, 6 Oct 2021 17:51:59 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     abhinavk@...eaurora.org
Cc:     Rob Clark <robdclark@...il.com>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        David Airlie <airlied@...ux.ie>, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        dri-devel@...ts.freedesktop.org, Daniel Vetter <daniel@...ll.ch>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        freedreno@...ts.freedesktop.org,
        Sumit Semwal <sumit.semwal@...aro.org>
Subject: Re: [Freedreno] [PATCH 06/11] drm/msm/disp/dpu1: Add DSC support in
 hw_ctl

On 02-08-21, 17:00, abhinavk@...eaurora.org wrote:
> On 2021-07-14 23:51, Vinod Koul wrote:
> > Later gens of hardware have DSC bits moved to hw_ctl, so configure these
> > bits so that DSC would work there as well
> > 
> > Signed-off-by: Vinod Koul <vkoul@...nel.org>
> Please correct me if wrong but here you seem to be flushing all the DSC bits
> even the unused ones. This will end-up enabling DSC even when DSC is unused
> on
> the newer targets.
> If so, thats wrong.
> We need to implement bit-mask based approach to avoid this change and only
> enable
> those DSCs which are used.

Yes as Dimitry suggested I have done that by passing indices

-- 
~Vinod