media: i2c: vgxy61: Report stream using frame descriptors

Add support for .get_frame_desc() to report CSI-2 virtual channel
and data type information. This allows CSI-2 receivers to properly
interpret the stream without inferring the data type from the pixel
format.

Signed-off-by: Julien Massot <julien.massot@collabora.com>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/i2c/vgxy61.c b/drivers/media/i2c/vgxy61.c
index 3d001e0b646b4c613102322e04665a7a9954902e..d64d0099e6fe2d6a66800ed5e6c64f6c9e7046de 100644 (file)
--- a/drivers/media/i2c/vgxy61.c
+++ b/drivers/media/i2c/vgxy61.c
@@ -1181,6 +1181,21 @@ static int vgxy61_s_stream(struct v4l2_subdev *sd, int enable)
        return ret;
 }
 
+static int vgxy61_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
+                                struct v4l2_mbus_frame_desc *fd)
+{
+       struct vgxy61_dev *sensor = to_vgxy61_dev(sd);
+
+       fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2;
+       fd->num_entries = 1;
+       fd->entry[0].pixelcode = sensor->fmt.code;
+       fd->entry[0].stream = 0;
+       fd->entry[0].bus.csi2.vc = 0;
+       fd->entry[0].bus.csi2.dt = get_data_type_by_code(sensor->fmt.code);
+
+       return 0;
+}
+
 static int vgxy61_set_fmt(struct v4l2_subdev *sd,
                          struct v4l2_subdev_state *sd_state,
                          struct v4l2_subdev_format *format)
@@ -1402,6 +1417,7 @@ static const struct v4l2_subdev_pad_ops vgxy61_pad_ops = {
        .set_fmt = vgxy61_set_fmt,
        .get_selection = vgxy61_get_selection,
        .enum_frame_size = vgxy61_enum_frame_size,
+       .get_frame_desc = vgxy61_get_frame_desc,
 };
 
 static const struct v4l2_subdev_ops vgxy61_subdev_ops = {