Re: [RFC PATCH 7/8] drm/rcar_du: Adapt vkms writeback to new drm_writeback_connector

[Louis Chauvet <louis.chauvet@bootlin.com>]

I think the commit title is wrong.

Le 11/08/2025 à 11:27, Suraj Kandpal a écrit :
> Now that drm_writeback_connector is embedded with the drm_connector
> adapt the rcar-du writeback functionality to this changes. This
> includes changing the drm_writeback_connector to be changed to drm_connector
> within the rcar_du_crtc.
> Some other changes are done which are a result of the all the above
> changes mentioned.
> 
> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
> ---
>   .../gpu/drm/renesas/rcar-du/rcar_du_crtc.h    |  4 ++--
>   .../drm/renesas/rcar-du/rcar_du_writeback.c   | 22 +++++++++++--------
>   2 files changed, 15 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h
> index d0f38a8b3561..457c803d75bc 100644
> --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h
> +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h
> @@ -72,11 +72,11 @@ struct rcar_du_crtc {
>   	const char *const *sources;
>   	unsigned int sources_count;
>   
> -	struct drm_writeback_connector writeback;
> +	struct drm_connector connector;
>   };
>   
>   #define to_rcar_crtc(c)		container_of(c, struct rcar_du_crtc, crtc)
> -#define wb_to_rcar_crtc(c)	container_of(c, struct rcar_du_crtc, writeback)
> +#define connector_to_rcar_crtc(c)	container_of(c, struct rcar_du_crtc, connector)
>   
>   /**
>    * struct rcar_du_crtc_state - Driver-specific CRTC state
> 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 9986a10e8114..95e6810612c2 100644
> --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> @@ -47,10 +47,12 @@ static int rcar_du_wb_conn_get_modes(struct drm_connector *connector)
>   				    dev->mode_config.max_height);
>   }
>   
> -static int rcar_du_wb_prepare_job(struct drm_writeback_connector *connector,
> +static int rcar_du_wb_prepare_job(struct drm_writeback_connector *wb_connector,
>   				  struct drm_writeback_job *job)
>   {
> -	struct rcar_du_crtc *rcrtc = wb_to_rcar_crtc(connector);
> +	struct drm_connector *connector =
> +		container_of(wb_connector, struct drm_connector, writeback);
> +	struct rcar_du_crtc *rcrtc = connector_to_rcar_crtc(connector);
>   	struct rcar_du_wb_job *rjob;
>   	int ret;
>   
> @@ -72,10 +74,12 @@ static int rcar_du_wb_prepare_job(struct drm_writeback_connector *connector,
>   	return 0;
>   }
>   
> -static void rcar_du_wb_cleanup_job(struct drm_writeback_connector *connector,
> +static void rcar_du_wb_cleanup_job(struct drm_writeback_connector *wb_connector,
>   				   struct drm_writeback_job *job)
>   {
> -	struct rcar_du_crtc *rcrtc = wb_to_rcar_crtc(connector);
> +	struct drm_connector *connector =
> +		container_of(wb_connector, struct drm_connector, writeback);
> +	struct rcar_du_crtc *rcrtc = connector_to_rcar_crtc(connector);
>   	struct rcar_du_wb_job *rjob = job->priv;
>   
>   	if (!job->fb)
> @@ -199,7 +203,7 @@ static const u32 writeback_formats[] = {
>   int rcar_du_writeback_init(struct rcar_du_device *rcdu,
>   			   struct rcar_du_crtc *rcrtc)
>   {
> -	struct drm_writeback_connector *wb_conn = &rcrtc->writeback;
> +	struct drm_writeback_connector *wb_conn = &rcrtc->connector.writeback;
>   
>   	struct drm_encoder *encoder;
>   
> @@ -212,7 +216,7 @@ int rcar_du_writeback_init(struct rcar_du_device *rcdu,
>   
>   	encoder->possible_crtcs = 1 << drm_crtc_index(&rcrtc->crtc);
>   
> -	drm_connector_helper_add(&wb_conn->base,
> +	drm_connector_helper_add(&rcrtc->connector,
>   				 &rcar_du_wb_conn_helper_funcs);
>   
>   	return drmm_writeback_connector_init(&rcdu->ddev, wb_conn,
> @@ -231,7 +235,7 @@ void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,
>   	struct drm_framebuffer *fb;
>   	unsigned int i;
>   
> -	state = rcrtc->writeback.base.state;
> +	state = rcrtc->connector.state;
>   	if (!state || !state->writeback_job)
>   		return;
>   
> @@ -246,10 +250,10 @@ 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->writeback, state);
> +	drm_writeback_queue_job(&rcrtc->connector.writeback, state);
>   }
>   
>   void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc)
>   {
> -	drm_writeback_signal_completion(&rcrtc->writeback, 0);
> +	drm_writeback_signal_completion(&rcrtc->connector.writeback, 0);
>   }

-- 
Louis Chauvet, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com