Re: [PATCH v2 6/8] drm/msm/dpu: Remove num_enc from topology struct in favour of num_dsc

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On 2023-01-09 01:31:57, Dmitry Baryshkov wrote:
> On 22/12/2022 01:19, Marijn Suijten wrote:
> > Downstream calls this num_enc yet the DSC patches introduced a new
> > num_dsc struct member, leaving num_enc effectively unused.
> > 
> > Fixes: 7e9cc175b159 ("drm/msm/disp/dpu1: Add support for DSC in topology")
> > Signed-off-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
> > ---
> >   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 9 ++++-----
> >   drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c      | 4 ++--
> >   drivers/gpu/drm/msm/msm_drv.h               | 2 --
> >   3 files changed, 6 insertions(+), 9 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > index 9c6817b5a194..a158cd502d38 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > @@ -579,19 +579,18 @@ static struct msm_display_topology dpu_encoder_get_topology(
> >   			topology.num_dspp = topology.num_lm;
> >   	}
> >   
> > -	topology.num_enc = 0;
> >   	topology.num_intf = intf_count;
> >   
> >   	if (dpu_enc->dsc) {
> > -		/* In case of Display Stream Compression (DSC), we would use
> > -		 * 2 encoders, 2 layer mixers and 1 interface
> > +		/*
> > +		 * In case of Display Stream Compression (DSC), we would use
> > +		 * 2 DSC encoders, 2 layer mixers and 1 interface
> >   		 * this is power optimal and can drive up to (including) 4k
> >   		 * screens
> >   		 */
> > -		topology.num_enc = 2;
> >   		topology.num_dsc = 2;
> > -		topology.num_intf = 1;
> >   		topology.num_lm = 2;
> > +		topology.num_intf = 1;
> 
> Unless there is a reason, please move num_intf assignment back while 
> preparing v3.

The assignment was reordered to match the order described in the comment
right above, such that this reads more naturally.  Not sure if it's
worth sending that as a separate fix, or drop it entirely.

> With that fixed:
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

<snip>



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