linux-kernel - [PATCH AUTOSEL 5.15 02/24] media: camss: set VFE bpl

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Message-Id: <20230724013325.2332084-2-sashal@kernel.org>
Date:   Sun, 23 Jul 2023 21:33:03 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andrey Konovalov <andrey.konovalov@...aro.org>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Sasha Levin <sashal@...nel.org>, linux-media@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 02/24] media: camss: set VFE bpl_alignment to 16 for sdm845 and sm8250

From: Andrey Konovalov <andrey.konovalov@...aro.org>

[ Upstream commit d5b7eb477c286f6ceccbb38704136eea0e6b09ca ]

>From the experiments with camera sensors using SGRBG10_1X10/3280x2464 and
SRGGB10_1X10/3280x2464 formats, it becomes clear that on sdm845 and sm8250
VFE outputs the lines padded to a length multiple of 16 bytes. As in the
current driver the value of the bpl_alignment is set to 8 bytes, the frames
captured in formats with the bytes-per-line value being not a multiple of
16 get corrupted.

Set the bpl_alignment of the camss video output device to 16 for sdm845 and
sm8250 to fix that.

Signed-off-by: Andrey Konovalov <andrey.konovalov@...aro.org>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Acked-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/platform/qcom/camss/camss-vfe.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index e0f3a36f3f3f9..2cfd1edc53956 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -1573,7 +1573,11 @@ int msm_vfe_register_entities(struct vfe_device *vfe,
 		}
 
 		video_out->ops = &vfe->video_ops;
-		video_out->bpl_alignment = 8;
+		if (vfe->camss->version == CAMSS_845 ||
+		    vfe->camss->version == CAMSS_8250)
+			video_out->bpl_alignment = 16;
+		else
+			video_out->bpl_alignment = 8;
 		video_out->line_based = 0;
 		if (i == VFE_LINE_PIX) {
 			video_out->bpl_alignment = 16;
-- 
2.39.2