We can not make the assumption that the bound subdev is always a CSI
mux, in i.MX6UL/i.MX6ULL that is not the case. So, just get the entity
selected by source directly upstream from the CSI.
Fixes: 86e02d07871c ("media: imx5/6/7: csi: Mark a bound video mux as a CSI mux")
Reported-by: Fabio Estevam <festevam@xxxxxxxxx>
Signed-off-by: Rui Miguel Silva <rmfrfs@xxxxxxxxx>
Tested-by: Fabio Estevam <festevam@xxxxxxxxx>
Tested-by: Sébastien Szymanski <sebastien.szymanski@xxxxxxxxxxxx>
---
drivers/staging/media/imx/imx7-media-csi.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 31e36168f9d0..ac52b1daf991 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -499,6 +499,7 @@ static int imx7_csi_pad_link_validate(struct v4l2_subdev *sd,
struct v4l2_subdev_format *sink_fmt)
{
struct imx7_csi *csi = v4l2_get_subdevdata(sd);
+ struct media_entity *src;
struct media_pad *pad;
int ret;
@@ -509,11 +510,21 @@ static int imx7_csi_pad_link_validate(struct v4l2_subdev *sd,
if (!csi->src_sd)
return -EPIPE;
+ src = &csi->src_sd->entity;
+
+ /*
+ * if the source is neither a CSI MUX or CSI-2 get the one directly
+ * upstream from this CSI
+ */
+ if (src->function != MEDIA_ENT_F_VID_IF_BRIDGE &&
+ src->function != MEDIA_ENT_F_VID_MUX)
+ src = &csi->sd.entity;
+
/*
- * find the entity that is selected by the CSI mux. This is needed
+ * find the entity that is selected by the source. This is needed
* to distinguish between a parallel or CSI-2 pipeline.
*/
- pad = imx_media_pipeline_pad(&csi->src_sd->entity, 0, 0, true);
+ pad = imx_media_pipeline_pad(src, 0, 0, true);
if (!pad)
return -ENODEV;
--
2.30.0
