[PATCH v2] media: imx7-media-csi: get csi upstream endpoint

[PATCH v2] media: imx7-media-csi: get csi upstream endpoint

[Rui Miguel Silva]

When the upstream endpoint is neither a mux nor a CSI2 module, just get
the source pad directly upstream from the CSI.

Fixes: 05f634040c0d ("media: staging/imx7: add imx7 CSI subdev driver")
Reported-by: Sebastien Szymanski <sebastien.szymanski@armadeus.com>
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
---
v1->v2:
Dan Carpenter:
  - s/in/is/
  - align code, and white space fix.

 drivers/staging/media/imx/imx7-media-csi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 9101566f3f67..f775870df7e0 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -442,6 +442,14 @@ static int imx7_csi_get_upstream_endpoint(struct imx7_csi *csi,
 
 	src = &csi->src_sd->entity;
 
+	/*
+	 * if the source is neither a mux or csi2 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;
+
 skip_video_mux:
 	/* get source pad of entity directly upstream from src */
 	pad = imx_media_pipeline_pad(src, 0, 0, true);
-- 
2.22.0