[PATCH/RFC v2 13/15] adv748x: csi2: only allow formats on sink pads

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The driver is now pad and stream aware, only allow to get/set format on
sink pads. Also record a different format for each sink pad since it's
no longer true that they are all the same

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
 drivers/media/i2c/adv748x/adv748x-csi2.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c
index 39f993282dd3bb5c..291b35bef49d41fb 100644
--- a/drivers/media/i2c/adv748x/adv748x-csi2.c
+++ b/drivers/media/i2c/adv748x/adv748x-csi2.c
@@ -176,6 +176,9 @@ static int adv748x_csi2_get_format(struct v4l2_subdev *sd,
 	struct adv748x_state *state = tx->state;
 	struct v4l2_mbus_framefmt *mbusformat;
 
+	if (sdformat->pad != ADV748X_CSI2_SINK)
+		return -EINVAL;
+
 	mbusformat = adv748x_csi2_get_pad_format(sd, cfg, sdformat->pad,
 						 sdformat->which);
 	if (!mbusformat)
@@ -199,6 +202,9 @@ static int adv748x_csi2_set_format(struct v4l2_subdev *sd,
 	struct v4l2_mbus_framefmt *mbusformat;
 	int ret = 0;
 
+	if (sdformat->pad != ADV748X_CSI2_SINK)
+		return -EINVAL;
+
 	mbusformat = adv748x_csi2_get_pad_format(sd, cfg, sdformat->pad,
 						 sdformat->which);
 	if (!mbusformat)
-- 
2.15.1




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