This is a note to let you know that I've just added the patch titled
media: rcar-vin: Fix YUYV8_1X16 handling for CSI-2
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-rcar-vin-fix-yuyv8_1x16-handling-for-csi-2.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 406e100202ecca5cc9fbf6b3d7ba9ce381260bc7
Author: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
Date: Mon Jun 17 18:11:24 2024 +0200
media: rcar-vin: Fix YUYV8_1X16 handling for CSI-2
[ Upstream commit 9caf253e8ad6f4c66f5591bac900f9f68b6b6620 ]
The YUYV8_1X16 and UYVY8_1X16 formats are treated as 'ITU-R
BT.601/BT.1358 16-bit YCbCr-422 input' (YUV16 - 0x5) in the R-Car VIN
driver and are thus disallowed when capturing frames from the R-Car
CSI-2 interface according to the hardware manual.
As the 1X16 format variants are meant to be used with serial busses they
have to be treated as 'YCbCr-422 8-bit data input' (0x1) when capturing
from CSI-2, which is a valid setting for CSI-2.
Commit 78b3f9d75a62 ("media: rcar-vin: Add check that input interface
and format are valid") disallowed capturing YUV16 when using the CSI-2
interface. Fix this by using YUV8_BT601 for YCbCr422 when CSI-2 is in
use.
Fixes: 78b3f9d75a62 ("media: rcar-vin: Add check that input interface and format are valid")
Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240617161135.130719-2-jacopo.mondi@xxxxxxxxxxxxxxxx
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
index 2a77353f10b59..bb4774e2f335e 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c
@@ -742,12 +742,22 @@ static int rvin_setup(struct rvin_dev *vin)
*/
switch (vin->mbus_code) {
case MEDIA_BUS_FMT_YUYV8_1X16:
- /* BT.601/BT.1358 16bit YCbCr422 */
- vnmc |= VNMC_INF_YUV16;
+ if (vin->is_csi)
+ /* YCbCr422 8-bit */
+ vnmc |= VNMC_INF_YUV8_BT601;
+ else
+ /* BT.601/BT.1358 16bit YCbCr422 */
+ vnmc |= VNMC_INF_YUV16;
input_is_yuv = true;
break;
case MEDIA_BUS_FMT_UYVY8_1X16:
- vnmc |= VNMC_INF_YUV16 | VNMC_YCAL;
+ if (vin->is_csi)
+ /* YCbCr422 8-bit */
+ vnmc |= VNMC_INF_YUV8_BT601;
+ else
+ /* BT.601/BT.1358 16bit YCbCr422 */
+ vnmc |= VNMC_INF_YUV16;
+ vnmc |= VNMC_YCAL;
input_is_yuv = true;
break;
case MEDIA_BUS_FMT_UYVY8_2X8:
