The Gen3 datasheets lists specific alignment restrictions compared to
Gen2. This was overlooked when adding Gen3 support as no problematic
configuration was encountered. However when adding support for Gen3 Up
Down Scaler (UDS) strange issues could be observed for odd widths
without taking this limit into consideration.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
drivers/media/platform/rcar-vin/rcar-v4l2.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index dc77682b47857c97..2fc2a05eaeacb134 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -673,6 +673,21 @@ static void rvin_mc_try_format(struct rvin_dev *vin,
pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, pix->colorspace,
pix->ycbcr_enc);
+ switch (vin->format.pixelformat) {
+ case V4L2_PIX_FMT_NV16:
+ pix->width = ALIGN(pix->width, 0x80);
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_XRGB555:
+ pix->width = ALIGN(pix->width, 0x40);
+ break;
+ default:
+ pix->width = ALIGN(pix->width, 0x20);
+ break;
+ }
+
rvin_format_align(vin, pix);
}
--
2.18.0
