linux-kernel - Re: [RFC PATCH 8/8] drm/msm/dpu: Adapt dpu writeback to new drm_writeback

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Message-ID: <ag34es6qm4b22qti4hbsju6sk5ny7ixq5fiwtni22vf7tvx5ba@ficntlx6i2hs>
Date: Mon, 11 Aug 2025 13:26:30 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Suraj Kandpal <suraj.kandpal@...el.com>
Cc: kernel-list@...pberrypi.com, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, intel-xe@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org, ankit.k.nautiyal@...el.com,
        arun.r.murthy@...el.com, uma.shankar@...el.com, jani.nikula@...el.com,
        harry.wentland@....com, siqueira@...lia.com, alexander.deucher@....com,
        christian.koenig@....com, airlied@...il.com, simona@...ll.ch,
        liviu.dudau@....com, maarten.lankhorst@...ux.intel.com,
        mripard@...nel.org, robin.clark@....qualcomm.com,
        abhinav.kumar@...ux.dev, tzimmermann@...e.de,
        jessica.zhang@....qualcomm.com, sean@...rly.run,
        marijn.suijten@...ainline.org,
        laurent.pinchart+renesas@...asonboard.com, mcanal@...lia.com,
        dave.stevenson@...pberrypi.com,
        tomi.valkeinen+renesas@...asonboard.com,
        kieran.bingham+renesas@...asonboard.com, louis.chauvet@...tlin.com
Subject: Re: [RFC PATCH 8/8] drm/msm/dpu: Adapt dpu writeback to new
 drm_writeback_connector

On Mon, Aug 11, 2025 at 02:57:07PM +0530, Suraj Kandpal wrote:
> Now that drm_writeback_connector is embedded with the drm_connector
> adapt the dpu writeback functionality to this changes. This
> includes changing the drm_writeback_connector to be changed to
> drm_connector within the dpu_wb_connector.
> Some other changes are done which are a result of the all the above
> changes mentioned.
> 
> Signed-off-by: Suraj Kandpal <suraj.kandpal@...el.com>
> ---
>  .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c  |  3 ++-
>  drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c    | 16 +++++++++-------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.h    |  4 ++--
>  3 files changed, 13 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> index 56a5b596554d..0e60c1ac07c5 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> @@ -484,7 +484,8 @@ static void dpu_encoder_phys_wb_prepare_for_kickoff(
>  		return;
>  	}
>  
> -	drm_conn = &wb_enc->wb_conn->base;
> +	drm_conn =
> +		container_of(wb_enc->wb_conn, struct drm_connector, writeback);

Just store drm_connector in dpu_encoder_phys_wb instead of
drm_writeback_connector.

>  	state = drm_conn->state;
>  
>  	if (wb_enc->wb_conn && wb_enc->wb_job)

-- 
With best wishes
Dmitry