media: i2c: alvium: implement enum_frame_size

Implement the enum_frame_size pad operation.
The sensor supports a continuous size range of resolutions.

Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c
index a88809333e56fe4a666133ce3429a5b2dd30252f..c27c6fcaede446cc8929dd585a3ecc5214934dda 100644 (file)
--- a/drivers/media/i2c/alvium-csi2.c
+++ b/drivers/media/i2c/alvium-csi2.c
@@ -1722,6 +1722,27 @@ alvium_code_to_pixfmt(struct alvium_dev *alvium, u32 code)
        return &alvium->alvium_csi2_fmt[0];
 }
 
+static int alvium_enum_frame_size(struct v4l2_subdev *sd,
+                                 struct v4l2_subdev_state *state,
+                                 struct v4l2_subdev_frame_size_enum *fse)
+{
+       struct alvium_dev *alvium = sd_to_alvium(sd);
+       const struct alvium_pixfmt *alvium_csi2_fmt;
+
+       if (fse->index)
+               return -EINVAL;
+
+       alvium_csi2_fmt = alvium_code_to_pixfmt(alvium, fse->code);
+       if (fse->code != alvium_csi2_fmt->code)
+               return -EINVAL;
+
+       fse->min_width = alvium->img_min_width;
+       fse->max_width = alvium->img_max_width;
+       fse->min_height = alvium->img_min_height;
+       fse->max_height = alvium->img_max_height;
+       return 0;
+}
+
 static int alvium_set_mode(struct alvium_dev *alvium,
                           struct v4l2_subdev_state *state)
 {
@@ -2229,6 +2250,7 @@ static const struct v4l2_subdev_video_ops alvium_video_ops = {
 
 static const struct v4l2_subdev_pad_ops alvium_pad_ops = {
        .enum_mbus_code = alvium_enum_mbus_code,
+       .enum_frame_size = alvium_enum_frame_size,
        .get_fmt = v4l2_subdev_get_fmt,
        .set_fmt = alvium_set_fmt,
        .get_selection = alvium_get_selection,