New review of this code. Ignore the previous one.
On 04/14/2016 06:17 PM, Ulrich Hecht wrote:
> Adds ioctls DV_TIMINGS_CAP, ENUM_DV_TIMINGS, G_DV_TIMINGS, S_DV_TIMINGS,
> and QUERY_DV_TIMINGS.
>
> Signed-off-by: Ulrich Hecht <ulrich.hecht+rene...@gmail.com>
> ---
> drivers/media/platform/rcar-vin/rcar-v4l2.c | 69
> +++++++++++++++++++++++++++++
> 1 file changed, 69 insertions(+)
>
> diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> index d8d5f3a..ba2ed4e 100644
> --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> @@ -413,12 +413,17 @@ static int rvin_enum_input(struct file *file, void
> *priv,
> struct v4l2_input *i)
> {
> struct rvin_dev *vin = video_drvdata(file);
> + struct v4l2_subdev *sd = vin_to_sd(vin);
>
> if (i->index != 0)
> return -EINVAL;
>
> i->type = V4L2_INPUT_TYPE_CAMERA;
> i->std = vin->vdev.tvnorms;
> +
> + if (v4l2_subdev_has_op(sd, pad, dv_timings_cap))
> + i->capabilities = V4L2_IN_CAP_DV_TIMINGS;
> +
> strlcpy(i->name, "Camera", sizeof(i->name));
I think it is better to use "HDMI" as the name.
>
> return 0;
> @@ -461,6 +466,64 @@ static int rvin_g_std(struct file *file, void *priv,
> v4l2_std_id *a)
> return v4l2_subdev_call(sd, video, g_std, a);
> }
>
> +static int rvin_enum_dv_timings(struct file *file, void *priv_fh,
> + struct v4l2_enum_dv_timings *timings)
> +{
> + struct rvin_dev *vin = video_drvdata(file);
> + struct v4l2_subdev *sd = vin_to_sd(vin);
> +
> + timings->pad = 0;
You should use vin->src_pad_idx here instead of 0.
> + return v4l2_subdev_call(sd,
> + pad, enum_dv_timings, timings);
The original pad value should be restored.
> +}
> +
> +static int rvin_s_dv_timings(struct file *file, void *priv_fh,
> + struct v4l2_dv_timings *timings)
> +{
> + struct rvin_dev *vin = video_drvdata(file);
> + struct v4l2_subdev *sd = vin_to_sd(vin);
> + int err;
> +
> + err = v4l2_subdev_call(sd,
> + video, s_dv_timings, timings);
> + if (!err) {
> + vin->sensor.width = timings->bt.width;
> + vin->sensor.height = timings->bt.height;
> + }
> + return err;
> +}
> +
> +static int rvin_g_dv_timings(struct file *file, void *priv_fh,
> + struct v4l2_dv_timings *timings)
> +{
> + struct rvin_dev *vin = video_drvdata(file);
> + struct v4l2_subdev *sd = vin_to_sd(vin);
> +
> + return v4l2_subdev_call(sd,
> + video, g_dv_timings, timings);
> +}
> +
> +static int rvin_query_dv_timings(struct file *file, void *priv_fh,
> + struct v4l2_dv_timings *timings)
> +{
> + struct rvin_dev *vin = video_drvdata(file);
> + struct v4l2_subdev *sd = vin_to_sd(vin);
> +
> + return v4l2_subdev_call(sd,
> + video, query_dv_timings, timings);
> +}
> +
> +static int rvin_dv_timings_cap(struct file *file, void *priv_fh,
> + struct v4l2_dv_timings_cap *cap)
> +{
> + struct rvin_dev *vin = video_drvdata(file);
> + struct v4l2_subdev *sd = vin_to_sd(vin);
> +
> + cap->pad = 0;
> + return v4l2_subdev_call(sd,
> + pad, dv_timings_cap, cap);
The comments for enum_dv_timings apply here as well.
> +}
> +
> static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
> .vidioc_querycap = rvin_querycap,
> .vidioc_try_fmt_vid_cap = rvin_try_fmt_vid_cap,
> @@ -477,6 +540,12 @@ static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
> .vidioc_g_input = rvin_g_input,
> .vidioc_s_input = rvin_s_input,
>
> + .vidioc_dv_timings_cap = rvin_dv_timings_cap,
> + .vidioc_enum_dv_timings = rvin_enum_dv_timings,
> + .vidioc_g_dv_timings = rvin_g_dv_timings,
> + .vidioc_s_dv_timings = rvin_s_dv_timings,
> + .vidioc_query_dv_timings = rvin_query_dv_timings,
> +
> .vidioc_querystd = rvin_querystd,
> .vidioc_g_std = rvin_g_std,
> .vidioc_s_std = rvin_s_std,
>
You also need to support the SOURCE_CHANGE event, but I will post a patch for
that myself later.
Regards,
Hans
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