[PATCH v11 30/36] media: subdev: Fallback to pad config in v4l2_subdev_get_fmt()

[Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>]

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

If the subdev doesn't implement routing support, fallback to pad config
as the storage for pad formats. This allows using the V4L2 subdev active
state API and the v4l2_subdev_get_fmt() helper in subdev drivers that
don't implement routing support.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index c1cc9b91dba7..7f50871054cd 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1512,8 +1512,14 @@ int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state,
 {
 	struct v4l2_mbus_framefmt *fmt;
 
-	fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
-						  format->stream);
+	if (sd->flags & V4L2_SUBDEV_FL_MULTIPLEXED)
+		fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
+							  format->stream);
+	else if (format->pad < sd->entity.num_pads && format->stream == 0)
+		fmt = v4l2_subdev_get_try_format(sd, state, format->pad);
+	else
+		fmt = NULL;
+
 	if (!fmt)
 		return -EINVAL;
 
-- 
2.25.1