Re: [PATCH v2 1/6] media: ov5647: Add set_fmt and get_fmt calls.

[Sakari Ailus]

Hi Dave,

Thanks for the patchset.

On Tue, May 19, 2020 at 04:16:16AM +0300, Roman Kovalivskyi wrote:
> From: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
> 
> There's no way to query the subdevice for the supported
> resolutions. Add set_fmt and get_fmt implementations. Since there's
> only one format supported set_fmt does nothing and get returns single
> format.
> 
> Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
> Signed-off-by: Roman Kovalivskyi <roman.kovalivskyi@xxxxxxxxxxxxxxx>
> Reviewed-by: Jacopo Mondi <jacopo@xxxxxxxxxx>
> ---
>  drivers/media/i2c/ov5647.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
> index e7d2e5b4ad4b..3e587eb0a30e 100644
> --- a/drivers/media/i2c/ov5647.c
> +++ b/drivers/media/i2c/ov5647.c
> @@ -463,8 +463,30 @@ static int ov5647_enum_mbus_code(struct v4l2_subdev *sd,
>  	return 0;
>  }
>  
> +static int ov5647_set_get_fmt(struct v4l2_subdev *sd,
> +			      struct v4l2_subdev_pad_config *cfg,
> +			      struct v4l2_subdev_format *format)
> +{
> +	struct v4l2_mbus_framefmt *fmt = &format->format;
> +
> +	if (format->pad != 0)
> +		return -EINVAL;

No need to check the pad, the caller already has checked for it.

> +
> +	/* Only one format is supported, so return that */
> +	memset(fmt, 0, sizeof(*fmt));
> +	fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8;
> +	fmt->colorspace = V4L2_COLORSPACE_SRGB;
> +	fmt->field = V4L2_FIELD_NONE;
> +	fmt->width = 640;
> +	fmt->height = 480;
> +
> +	return 0;
> +}
> +
>  static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = {
>  	.enum_mbus_code = ov5647_enum_mbus_code,
> +	.set_fmt =	  ov5647_set_get_fmt,
> +	.get_fmt =	  ov5647_set_get_fmt,
>  };
>  
>  static const struct v4l2_subdev_ops ov5647_subdev_ops = {

-- 
Kind regards,

Sakari Ailus