Hi Janusz,
On Sun, May 26, 2019 at 10:47:57PM +0200, Janusz Krzysztofik wrote:
> According to V4L2 subdevice interface specification, frame scaling
> factors should be reset to default values on modification of input frame
> format. Assuming that requirement also applies in case of crop
> rectangle modification unless V4L2_SEL_FLAG_KEEP_CONFIG is requested,
> the driver now does not respect it.
>
> The KEEP_CONFIG case is already implemented, fix the other path.
>
> Signed-off-by: Janusz Krzysztofik <[email protected]>
> ---
> drivers/media/i2c/ov6650.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
> index 47590cd51190..cc70d8952999 100644
> --- a/drivers/media/i2c/ov6650.c
> +++ b/drivers/media/i2c/ov6650.c
> @@ -472,6 +472,8 @@ static int ov6650_get_selection(struct v4l2_subdev *sd,
> }
> }
>
> +static int ov6650_s_fmt(struct v4l2_subdev *sd, u32 code, bool half_scale);
> +
Would it be possible to rearrange the functions in the file so you wouldn't
need extra prototypes? Preferrably that'd be a new patch.
> static int ov6650_set_selection(struct v4l2_subdev *sd,
> struct v4l2_subdev_pad_config *cfg,
> struct v4l2_subdev_selection *sel)
> @@ -515,7 +517,13 @@ static int ov6650_set_selection(struct v4l2_subdev *sd,
> }
> if (!ret)
> priv->rect.height = sel->r.height;
> + else
> + return ret;
if (ret)
return ret;
...
>
> + if (priv->half_scale) {
> + /* turn off half scaling, preserve media bus format */
> + ret = ov6650_s_fmt(sd, priv->code, false);
> + }
> return ret;
> }
>
--
Regards,
Sakari Ailus
