linux-kernel - Re: [Freedreno] [PATCH 02/11] drm/msm/disp/dpu1: Add support for DSC

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Date:   Wed, 6 Oct 2021 11:06:29 +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 02/11] drm/msm/disp/dpu1: Add support for DSC

On 02-08-21, 16:03, abhinavk@...eaurora.org wrote:
> On 2021-07-14 23:51, Vinod Koul wrote:
> > Display Stream Compression (DSC) is one of the hw blocks in dpu, so add
> > support by adding hw blocks for DSC
> > 
> > Signed-off-by: Vinod Koul <vkoul@...nel.org>
> > ---
> > Changes since RFC:
> >  - Drop unused enums
> > 
> >  drivers/gpu/drm/msm/Makefile                  |   1 +
> >  .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h    |  13 ++
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c    | 221 ++++++++++++++++++
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h    |  77 ++++++
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h   |  13 ++
> >  5 files changed, 325 insertions(+)
> >  create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
> >  create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
> > 
> > diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
> > index 610d630326bb..fd8fc57f1f58 100644
> > --- a/drivers/gpu/drm/msm/Makefile
> > +++ b/drivers/gpu/drm/msm/Makefile
> > @@ -61,6 +61,7 @@ msm-y := \
> >  	disp/dpu1/dpu_hw_blk.o \
> >  	disp/dpu1/dpu_hw_catalog.o \
> >  	disp/dpu1/dpu_hw_ctl.o \
> > +	disp/dpu1/dpu_hw_dsc.o \
> >  	disp/dpu1/dpu_hw_interrupts.o \
> >  	disp/dpu1/dpu_hw_intf.o \
> >  	disp/dpu1/dpu_hw_lm.o \
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > index 4dfd8a20ad5c..b8b4dc36880c 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> > @@ -547,6 +547,16 @@ struct dpu_merge_3d_cfg  {
> >  	const struct dpu_merge_3d_sub_blks *sblk;
> >  };
> > 
> > +/**
> > + * struct dpu_dsc_cfg - information of DSC blocks
> > + * @id                 enum identifying this block
> > + * @base               register offset of this block
> > + * @features           bit mask identifying sub-blocks/features
> > + */
> > +struct dpu_dsc_cfg {
> > +	DPU_HW_BLK_INFO;
> > +};
> > +
> >  /**
> >   * struct dpu_intf_cfg - information of timing engine blocks
> >   * @id                 enum identifying this block
> > @@ -748,6 +758,9 @@ struct dpu_mdss_cfg {
> >  	u32 merge_3d_count;
> >  	const struct dpu_merge_3d_cfg *merge_3d;
> > 
> > +	u32 dsc_count;
> > +	struct dpu_dsc_cfg *dsc;
> > +
> >  	u32 intf_count;
> >  	const struct dpu_intf_cfg *intf;
> > 
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
> > b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
> > new file mode 100644
> > index 000000000000..e27e67bd42e8
> > --- /dev/null
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
> > @@ -0,0 +1,221 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Copyright (c) 2020, Linaro Limited
> Copyright year needs an update : 2020-2021?

Thanks for spotting, fixed up

-- 
~Vinod