Re: [PATCH v6 11/11] media: rcar-isp: Add full streams support

[Niklas Söderlund]

Hi Tomi,

Thanks for your patch.

On 2026-06-17 14:55:04 +0300, Tomi Valkeinen wrote:
> Add the missing pieces to enable full streams support:
> 
> - Add set_routing
> - Drop the explicit uses of a single stream, and instead use the streams
>   mask.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx>

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>

> ---
>  drivers/media/platform/renesas/rcar-isp/csisp.c | 39 +++++++++++++++++++++++--
>  1 file changed, 36 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/media/platform/renesas/rcar-isp/csisp.c b/drivers/media/platform/renesas/rcar-isp/csisp.c
> index 42ee6c19801a..2e1bc8fbd432 100644
> --- a/drivers/media/platform/renesas/rcar-isp/csisp.c
> +++ b/drivers/media/platform/renesas/rcar-isp/csisp.c
> @@ -340,6 +340,7 @@ static int risp_enable_streams(struct v4l2_subdev *sd,
>  			       u64 source_streams_mask)
>  {
>  	struct rcar_isp *isp = sd_to_isp(sd);
> +	u64 sink_streams;
>  	int ret;
>  
>  	if (source_streams_mask != 1)
> @@ -354,8 +355,13 @@ static int risp_enable_streams(struct v4l2_subdev *sd,
>  			return ret;
>  	}
>  
> +	sink_streams = v4l2_subdev_state_xlate_streams(state,
> +						       source_pad,
> +						       RCAR_ISP_SINK,
> +						       &source_streams_mask);
> +
>  	ret = v4l2_subdev_enable_streams(isp->remote, isp->remote_pad,
> -					 BIT_ULL(0));
> +					 sink_streams);
>  	if (ret) {
>  		if (isp->stream_count == 0)
>  			risp_stop(isp);
> @@ -372,6 +378,7 @@ static int risp_disable_streams(struct v4l2_subdev *sd,
>  				u64 source_streams_mask)
>  {
>  	struct rcar_isp *isp = sd_to_isp(sd);
> +	u64 sink_streams;
>  	int ret;
>  
>  	if (source_streams_mask != 1)
> @@ -380,8 +387,12 @@ static int risp_disable_streams(struct v4l2_subdev *sd,
>  	if (!isp->remote)
>  		return -ENODEV;
>  
> -	ret = v4l2_subdev_disable_streams(isp->remote, isp->remote_pad,
> -					  BIT_ULL(0));
> +	sink_streams = v4l2_subdev_state_xlate_streams(state,
> +						       source_pad,
> +						       RCAR_ISP_SINK,
> +						       &source_streams_mask);
> +
> +	ret = v4l2_subdev_disable_streams(isp->remote, isp->remote_pad, sink_streams);
>  	if (ret)
>  		return ret;
>  
> @@ -423,12 +434,34 @@ static int risp_set_pad_format(struct v4l2_subdev *sd,
>  	return 0;
>  }
>  
> +static int risp_set_routing(struct v4l2_subdev *sd,
> +			    struct v4l2_subdev_state *state,
> +			    enum v4l2_subdev_format_whence which,
> +			    struct v4l2_subdev_krouting *routing)
> +{
> +	int ret;
> +
> +	ret = v4l2_subdev_routing_validate(sd, routing,
> +					   V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 |
> +					   V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING);
> +	if (ret)
> +		return ret;
> +
> +	ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing,
> +					       &risp_default_fmt);
> +	if (ret)
> +		return ret;
> +
> +	return 0;
> +}
> +
>  static const struct v4l2_subdev_pad_ops risp_pad_ops = {
>  	.enable_streams = risp_enable_streams,
>  	.disable_streams = risp_disable_streams,
>  	.set_fmt = risp_set_pad_format,
>  	.get_fmt = v4l2_subdev_get_fmt,
>  	.link_validate = v4l2_subdev_link_validate_default,
> +	.set_routing = risp_set_routing,
>  };
>  
>  static const struct v4l2_subdev_ops rcar_isp_subdev_ops = {
> 
> -- 
> 2.43.0
> 

-- 
Kind Regards,
Niklas Söderlund