[cip-dev] [PATCH 4.19.y-cip 09/40] media: rcar-vin: Invalidate pipeline if conversion is not possible on input formats

["Lad Prabhakar" <prabhakar.mahadev-lad.rj@bp.renesas.com>]

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commit fd22e8eb4145852223b36b0e6c7e308ed5905ad2 upstream.

Up until now the VIN was capable to convert any of its supported input mbus
formats to any of it's supported output pixel formats. With the addition of
RAW formats this is no longer true.

This patch invalidates the pipeline by adding a check if given vin input
format can be converted to supported output pixel format.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
[PL: dropped changes from rvin_enum_fmt_vid_cap()]
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/media/platform/rcar-vin/rcar-dma.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index e51620c6cc40..5bab9f8159f6 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -1042,11 +1042,15 @@ static int rvin_mc_validate_format(struct rvin_dev *vin, struct v4l2_subdev *sd,
 	case MEDIA_BUS_FMT_UYVY8_2X8:
 	case MEDIA_BUS_FMT_UYVY10_2X10:
 	case MEDIA_BUS_FMT_RGB888_1X24:
-		vin->mbus_code = fmt.format.code;
+		break;
+	case MEDIA_BUS_FMT_SRGGB8_1X8:
+		if (vin->format.pixelformat != V4L2_PIX_FMT_SRGGB8)
+			return -EPIPE;
 		break;
 	default:
 		return -EPIPE;
 	}
+	vin->mbus_code = fmt.format.code;
 
 	switch (fmt.format.field) {
 	case V4L2_FIELD_TOP:
-- 
2.17.1


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