linux-kernel - [PATCH v3 5/7] media: hantro: postproc: Properly calculate chroma offset

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Message-Id: <20220706182901.78949-6-jernej.skrabec@gmail.com>
Date:   Wed,  6 Jul 2022 20:28:59 +0200
From:   Jernej Skrabec <jernej.skrabec@...il.com>
To:     ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de
Cc:     mchehab@...nel.org, hverkuil-cisco@...all.nl,
        benjamin.gaignard@...labora.com, nicolas.dufresne@...labora.com,
        gregkh@...uxfoundation.org, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Jernej Skrabec <jernej.skrabec@...il.com>
Subject: [PATCH v3 5/7] media: hantro: postproc: Properly calculate chroma offset

Currently chroma offset calculation assumes only 1 byte per luma, with
no consideration for stride.

Take necessary information from destination pixel format which makes
calculation completely universal.

Reviewed-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Tested-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@...il.com>
---
 drivers/staging/media/hantro/hantro_postproc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/hantro/hantro_postproc.c b/drivers/staging/media/hantro/hantro_postproc.c
index 8933b4af73ed..a0928c508434 100644
--- a/drivers/staging/media/hantro/hantro_postproc.c
+++ b/drivers/staging/media/hantro/hantro_postproc.c
@@ -113,12 +113,14 @@ static void hantro_postproc_g2_enable(struct hantro_ctx *ctx)
 {
 	struct hantro_dev *vpu = ctx->dev;
 	struct vb2_v4l2_buffer *dst_buf;
-	size_t chroma_offset = ctx->dst_fmt.width * ctx->dst_fmt.height;
 	int down_scale = down_scale_factor(ctx);
+	size_t chroma_offset;
 	dma_addr_t dst_dma;
 
 	dst_buf = hantro_get_dst_buf(ctx);
 	dst_dma = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+	chroma_offset = ctx->dst_fmt.plane_fmt[0].bytesperline *
+			ctx->dst_fmt.height;
 
 	if (down_scale) {
 		hantro_reg_write(vpu, &g2_down_scale_e, 1);
-- 
2.37.0