Re: [PATCH v6 3/7] drm: writeback: Modify drm_writeback_queue_job helper

[Alex Hung <alex.hung@amd.com>]

Reviewed-by: Alex Hung <alex.hung@amd.com>

On 7/13/26 22:28, Suraj Kandpal wrote:
> drm_writeback_queue_job() needs access to the parent drm_connector
> object as well as the drm_writeback_connector object itself. So,
> pass in the top level drm_connector and traverse down to
> drm_writeback_connector rather than passing in the lower level
> object and traversing back up. This is also consistent with the
> rest of the writeback interface which is being updated to use
> drm_connector as the top level handle.
> 
> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> Reviewed-by: John Harrison <John.Harrison@Igalia.com>
> ---
> v5 -> v6:
> - Rebase over latest kernel
> 
> v4 -> v5:
> - Make @connector kerneldoc wording consistent across the series (John)
> 
> v3 -> v4:
> - Update subject line for consitency (John)
> - Update commit message across commits for consitency (John)
> 
>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c   | 2 +-
>   drivers/gpu/drm/arm/display/komeda/komeda_crtc.c    | 2 +-
>   drivers/gpu/drm/arm/malidp_mw.c                     | 3 +--
>   drivers/gpu/drm/drm_writeback.c                     | 6 ++++--
>   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 2 +-
>   drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c | 2 +-
>   drivers/gpu/drm/vc4/vc4_txp.c                       | 2 +-
>   drivers/gpu/drm/vkms/vkms_writeback.c               | 3 +--
>   include/drm/drm_writeback.h                         | 2 +-
>   9 files changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 427a8a52d256..9504f6b5571e 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -4975,7 +4975,7 @@ static void dm_set_writeback(struct amdgpu_display_manager *dm,
>   	dc_stream_add_writeback(dm->dc, crtc_state->stream, wb_info);
>   
>   	acrtc->wb_conn = wb_conn;
> -	drm_writeback_queue_job(wb_conn, new_con_state);
> +	drm_writeback_queue_job(connector, new_con_state);
>   
>   	/*
>   	 * Writeback completion is detected in the CRTC vblank IRQ
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
> index 6611920c45fb..c64cf5d97e62 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
> @@ -271,7 +271,7 @@ komeda_crtc_do_flush(struct drm_crtc *crtc,
>   
>   	conn_st = wb_conn ? wb_conn->base.state : NULL;
>   	if (conn_st && conn_st->writeback_job)
> -		drm_writeback_queue_job(&wb_conn->base.writeback, conn_st);
> +		drm_writeback_queue_job(&wb_conn->base, conn_st);
>   
>   	/* step 2: notify the HW to kickoff the update */
>   	mdev->funcs->flush(mdev, master->id, kcrtc_st->active_pipes);
> diff --git a/drivers/gpu/drm/arm/malidp_mw.c b/drivers/gpu/drm/arm/malidp_mw.c
> index 271ec83c7e48..159d7bb3a189 100644
> --- a/drivers/gpu/drm/arm/malidp_mw.c
> +++ b/drivers/gpu/drm/arm/malidp_mw.c
> @@ -244,7 +244,6 @@ void malidp_mw_atomic_commit(struct drm_device *drm,
>   			     struct drm_atomic_commit *old_state)
>   {
>   	struct malidp_drm *malidp = drm_to_malidp(drm);
> -	struct drm_writeback_connector *mw_conn = &malidp->mw_connector.writeback;
>   	struct drm_connector_state *conn_state = malidp->mw_connector.state;
>   	struct malidp_hw_device *hwdev = malidp->dev;
>   	struct malidp_mw_connector_state *mw_state;
> @@ -264,7 +263,7 @@ void malidp_mw_atomic_commit(struct drm_device *drm,
>   				     &mw_state->addrs[0],
>   				     mw_state->format);
>   
> -		drm_writeback_queue_job(mw_conn, conn_state);
> +		drm_writeback_queue_job(&malidp->mw_connector, conn_state);
>   		hwdev->hw->enable_memwrite(hwdev, mw_state->addrs,
>   					   mw_state->pitches, mw_state->n_planes,
>   					   fb->width, fb->height, mw_state->format,
> diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
> index 79c4be2acbbe..e999eca5b649 100644
> --- a/drivers/gpu/drm/drm_writeback.c
> +++ b/drivers/gpu/drm/drm_writeback.c
> @@ -408,7 +408,8 @@ EXPORT_SYMBOL(drm_writeback_prepare_job);
>   
>   /**
>    * drm_writeback_queue_job - Queue a writeback job for later signalling
> - * @wb_connector: The writeback connector to queue a job on
> + * @connector: DRM connector which contains the writeback connector to
> + * queue a job on
>    * @conn_state: The connector state containing the job to queue
>    *
>    * This function adds the job contained in @conn_state to the job_queue for a
> @@ -425,9 +426,10 @@ EXPORT_SYMBOL(drm_writeback_prepare_job);
>    *
>    * See also: drm_writeback_signal_completion()
>    */
> -void drm_writeback_queue_job(struct drm_writeback_connector *wb_connector,
> +void drm_writeback_queue_job(struct drm_connector *connector,
>   			     struct drm_connector_state *conn_state)
>   {
> +	struct drm_writeback_connector *wb_connector = &connector->writeback;
>   	struct drm_writeback_job *job;
>   	unsigned long flags;
>   
> 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 e2a328225c9e..0a4026f22274 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
> @@ -486,7 +486,7 @@ static void dpu_encoder_phys_wb_prepare_for_kickoff(
>   	state = drm_conn->state;
>   
>   	if (wb_enc->wb_conn && wb_enc->wb_job)
> -		drm_writeback_queue_job(wb_enc->wb_conn, state);
> +		drm_writeback_queue_job(drm_conn, state);
>   
>   	dpu_encoder_phys_wb_setup(phys_enc);
>   
> diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> index 6b27307941a4..5cd6c81a9710 100644
> --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> @@ -246,7 +246,7 @@ void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,
>   		cfg->mem[i] = sg_dma_address(rjob->sg_tables[i].sgl)
>   			    + fb->offsets[i];
>   
> -	drm_writeback_queue_job(&rcrtc->wb_connector.writeback, state);
> +	drm_writeback_queue_job(&rcrtc->wb_connector, state);
>   }
>   
>   void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc)
> diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c
> index f11ad54d067a..9cf2ec99bdfb 100644
> --- a/drivers/gpu/drm/vc4/vc4_txp.c
> +++ b/drivers/gpu/drm/vc4/vc4_txp.c
> @@ -356,7 +356,7 @@ static void vc4_txp_connector_atomic_commit(struct drm_connector *conn,
>   
>   	TXP_WRITE(TXP_DST_CTRL, ctrl);
>   
> -	drm_writeback_queue_job(&txp->connector.writeback, conn_state);
> +	drm_writeback_queue_job(&txp->connector, conn_state);
>   
>   	drm_dev_exit(idx);
>   }
> diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
> index 9341533b0325..2e3df9388dd2 100644
> --- a/drivers/gpu/drm/vkms/vkms_writeback.c
> +++ b/drivers/gpu/drm/vkms/vkms_writeback.c
> @@ -131,7 +131,6 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
>   	struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state,
>   											 conn);
>   	struct vkms_output *output = drm_crtc_to_vkms_output(connector_state->crtc);
> -	struct drm_writeback_connector *wb_conn = &output->wb_connector.writeback;
>   	struct drm_connector_state *conn_state = output->wb_connector.state;
>   	struct vkms_crtc_state *crtc_state = output->composer_state;
>   	struct drm_framebuffer *fb = connector_state->writeback_job->fb;
> @@ -153,7 +152,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
>   	crtc_state->active_writeback = active_wb;
>   	crtc_state->wb_pending = true;
>   	spin_unlock_irq(&output->composer_lock);
> -	drm_writeback_queue_job(wb_conn, connector_state);
> +	drm_writeback_queue_job(&output->wb_connector, connector_state);
>   	active_wb->pixel_write = get_pixel_write_function(wb_format);
>   	drm_rect_init(&wb_frame_info->src, 0, 0, crtc_width, crtc_height);
>   	drm_rect_init(&wb_frame_info->dst, 0, 0, crtc_width, crtc_height);
> diff --git a/include/drm/drm_writeback.h b/include/drm/drm_writeback.h
> index c6960c7e634e..b4c11d380df0 100644
> --- a/include/drm/drm_writeback.h
> +++ b/include/drm/drm_writeback.h
> @@ -94,7 +94,7 @@ int drm_writeback_set_fb(struct drm_connector_state *conn_state,
>   
>   int drm_writeback_prepare_job(struct drm_writeback_job *job);
>   
> -void drm_writeback_queue_job(struct drm_writeback_connector *wb_connector,
> +void drm_writeback_queue_job(struct drm_connector *wb_connector,
>   			     struct drm_connector_state *conn_state);
>   
>   void drm_writeback_cleanup_job(struct drm_writeback_job *job);