Re: [PATCH v8 2/2] rcar-vin: implement EDID control ioctls

["Niklas Söderlund" <niklas.soderlund@ragnatech.se>]

Hi Ulrich,

Thanks for your patch.

Can you append another patch ontop of this one whit the following 
change:

diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index ac26738..7ba728d 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -494,7 +494,7 @@ static int rvin_enum_dv_timings(struct file *file, void *priv_fh,
        int pad, ret;
 
        pad = timings->pad;
-       timings->pad = vin->src_pad_idx;
+       timings->pad = vin->sink_pad_idx;
 
        ret = v4l2_subdev_call(sd, pad, enum_dv_timings, timings);
 
@@ -548,7 +548,7 @@ static int rvin_dv_timings_cap(struct file *file, void *priv_fh,
        int pad, ret;
 
        pad = cap->pad;
-       cap->pad = vin->src_pad_idx;
+       cap->pad = vin->sink_pad_idx;
 
        ret = v4l2_subdev_call(sd, pad, dv_timings_cap, cap);


Whit that change the driver pass v4l2-compliance check for the HDMI 
input on Koelsch for me.

On 2016-09-15 15:24:08 +0200, Ulrich Hecht wrote:
> Adds G_EDID and S_EDID.
> 
> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
> ---
>  drivers/media/platform/rcar-vin/rcar-v4l2.c | 42 +++++++++++++++++++++++++++++
>  drivers/media/platform/rcar-vin/rcar-vin.h  |  1 +
>  2 files changed, 43 insertions(+)
> 
> diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> index 62ca7e3..f679182 100644
> --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> @@ -557,6 +557,38 @@ static int rvin_dv_timings_cap(struct file *file, void *priv_fh,
>  	return ret;
>  }
>  
> +static int rvin_g_edid(struct file *file, void *fh, struct v4l2_edid *edid)
> +{
> +	struct rvin_dev *vin = video_drvdata(file);
> +	struct v4l2_subdev *sd = vin_to_source(vin);
> +	int input, ret;
> +
> +	input = edid->pad;
> +	edid->pad = vin->sink_pad_idx;
> +
> +	ret = v4l2_subdev_call(sd, pad, get_edid, edid);
> +
> +	edid->pad = input;
> +
> +	return ret;
> +}
> +
> +static int rvin_s_edid(struct file *file, void *fh, struct v4l2_edid *edid)
> +{
> +	struct rvin_dev *vin = video_drvdata(file);
> +	struct v4l2_subdev *sd = vin_to_source(vin);
> +	int input, ret;
> +
> +	input = edid->pad;
> +	edid->pad = vin->sink_pad_idx;
> +
> +	ret = v4l2_subdev_call(sd, pad, set_edid, edid);
> +
> +	edid->pad = input;
> +
> +	return ret;
> +}
> +
>  static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
>  	.vidioc_querycap		= rvin_querycap,
>  	.vidioc_try_fmt_vid_cap		= rvin_try_fmt_vid_cap,
> @@ -579,6 +611,9 @@ static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
>  	.vidioc_s_dv_timings		= rvin_s_dv_timings,
>  	.vidioc_query_dv_timings	= rvin_query_dv_timings,
>  
> +	.vidioc_g_edid			= rvin_g_edid,
> +	.vidioc_s_edid			= rvin_s_edid,
> +
>  	.vidioc_querystd		= rvin_querystd,
>  	.vidioc_g_std			= rvin_g_std,
>  	.vidioc_s_std			= rvin_s_std,
> @@ -832,6 +867,13 @@ int rvin_v4l2_probe(struct rvin_dev *vin)
>  	vin->src_pad_idx = pad_idx;
>  	fmt.pad = vin->src_pad_idx;
>  
> +	vin->sink_pad_idx = 0;
> +	for (pad_idx = 0; pad_idx < sd->entity.num_pads; pad_idx++)
> +		if (sd->entity.pads[pad_idx].flags == MEDIA_PAD_FL_SINK) {
> +			vin->sink_pad_idx = pad_idx;
> +			break;
> +		}
> +
>  	/* Try to improve our guess of a reasonable window format */
>  	ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
>  	if (ret) {
> diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
> index 793184d..af815cc 100644
> --- a/drivers/media/platform/rcar-vin/rcar-vin.h
> +++ b/drivers/media/platform/rcar-vin/rcar-vin.h
> @@ -121,6 +121,7 @@ struct rvin_dev {
>  	struct video_device vdev;
>  	struct v4l2_device v4l2_dev;
>  	int src_pad_idx;
> +	int sink_pad_idx;

sink_pad_idx should be documented in the comment above the struct. If 
you fix that feel free to add my:

Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

>  	struct v4l2_ctrl_handler ctrl_handler;
>  	struct v4l2_async_notifier notifier;
>  	struct rvin_graph_entity digital;
> -- 
> 2.9.3
> 

-- 
Regards,
Niklas Söderlund