Re: [PATCH 2/3] media: synopsys: hdmirx: add input status reporting to VIDIOC_ENUMINPUT

[Dmitry Osipenko]

On 9/21/26 10:15, Sascha Hauer wrote:
> From: Gerald Loacker <gerald.loacker@xxxxxxxxxxxxxx>
> 
> Userspace currently has to learn the cable and lock state from the error
> VIDIOC_QUERY_DV_TIMINGS returns, -ENOLINK or -ENOLCK. Both of those paths
> log at v4l2_err level, so waiting for a cable fills the kernel log.
> 
> Report it where it belongs instead: V4L2_IN_ST_NO_POWER while the source
> is not driving the connector's +5V line, V4L2_IN_ST_NO_SIGNAL while the
> receiver has not locked. Both come from the helpers
> hdmirx_query_dv_timings() already uses, so the two cannot disagree.
> adv76xx_g_input_status() and adv7842_g_input_status() report the same two
> flags the same way.
> 
> Signed-off-by: Gerald Loacker <gerald.loacker@xxxxxxxxxxxxxx>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> ---
>  drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
> index 24ec6138a1fb6..75576a9366fd0 100644
> --- a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
> +++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
> @@ -1199,6 +1199,9 @@ static void hdmirx_submodule_init(struct snps_hdmirx_dev *hdmirx_dev)
>  static int hdmirx_enum_input(struct file *file, void *priv,
>  			     struct v4l2_input *input)
>  {
> +	struct hdmirx_stream *stream = video_drvdata(file);
> +	struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev;
> +
>  	if (input->index > 0)
>  		return -EINVAL;
>  
> @@ -1207,6 +1210,12 @@ static int hdmirx_enum_input(struct file *file, void *priv,
>  	strscpy(input->name, "HDMI IN", sizeof(input->name));
>  	input->capabilities = V4L2_IN_CAP_DV_TIMINGS;
>  
> +	input->status = 0;
> +	if (port_no_link(hdmirx_dev))
> +		input->status |= V4L2_IN_ST_NO_POWER;
> +	if (signal_not_lock(hdmirx_dev))
> +		input->status |= V4L2_IN_ST_NO_SIGNAL;
> +
>  	return 0;
>  }
>  
> 

Reviewed-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>

-- 
Best regards,
Dmitry