Re: [PATCH 4/5] media: i2c: imx290: Add support to enumerate all frame sizes

Manivannan Sadhasivam
2019-12-15T17:48:45Z

Hi Sakari,

On Tue, Dec 03, 2019 at 10:56:04AM +0200, Sakari Ailus wrote:
> On Sat, Nov 30, 2019 at 12:35:40AM +0530, Manivannan Sadhasivam wrote:
> > Add support to enumerate all frame sizes supported by IMX290. This is
> > required for using with userspace tools such as libcamera.
> >
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > ---
> > drivers/media/i2c/imx290.c | 20 ++++++++++++++++++++
> > 1 file changed, 20 insertions(+)
> >
> > diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c
> > index d5bb3a59ac46..f26c4a0ee0a0 100644
> > --- a/drivers/media/i2c/imx290.c
> > +++ b/drivers/media/i2c/imx290.c
> > @@ -468,6 +468,25 @@ static int imx290_enum_mbus_code(struct v4l2_subdev *sd,
> > return 0;
> > }
> >
> > +static int imx290_enum_frame_size(struct v4l2_subdev *subdev,
> > + struct v4l2_subdev_pad_config *cfg,
> > + struct v4l2_subdev_frame_size_enum *fse)
> > +{
> > + if ((fse->code != imx290_formats[0].code) &&
> > + (fse->code != imx290_formats[1].code))
>
> Please use a loop over imx290_formats instead.
>

May I know why? What benefit does it provide over current method?

Thanks,
Mani

> > + return -EINVAL;
> > +
> > + if (fse->index >= ARRAY_SIZE(imx290_modes))
> > + return -EINVAL;
> > +
> > + fse->min_width = imx290_modes[fse->index].width;
> > + fse->max_width = imx290_modes[fse->index].width;
> > + fse->min_height = imx290_modes[fse->index].height;
> > + fse->max_height = imx290_modes[fse->index].height;
> > +
> > + return 0;
> > +}
> > +
> > static int imx290_get_fmt(struct v4l2_subdev *sd,
> > struct v4l2_subdev_pad_config *cfg,
> > struct v4l2_subdev_format *fmt)
> > @@ -820,6 +839,7 @@ static const struct v4l2_subdev_video_ops imx290_video_ops = {
> > static const struct v4l2_subdev_pad_ops imx290_pad_ops = {
> > .init_cfg = imx290_entity_init_cfg,
> > .enum_mbus_code = imx290_enum_mbus_code,
> > + .enum_frame_size = imx290_enum_frame_size,
> > .get_fmt = imx290_get_fmt,
> > .set_fmt = imx290_set_fmt,
> > };
>
> --
> Regards,
>
> Sakari Ailus