linux-kernel - [PATCH 1/5] media: imx-jpeg: Refactor function mxc_jpeg

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Message-Id: <73ea0dba34b5bf02104517fce3f66ef2e6d96a16.1646983646.git.ming.qian@nxp.com>
Date:   Fri, 11 Mar 2022 15:51:43 +0800
From:   Ming Qian <ming.qian@....com>
To:     mchehab@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        mirela.rabulea@....nxp.com
Cc:     hverkuil-cisco@...all.nl, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 1/5] media: imx-jpeg: Refactor function mxc_jpeg_parse

Refine code to support dynamic resolution change

Signed-off-by: Ming Qian <ming.qian@....com>
---
 drivers/media/platform/imx-jpeg/mxc-jpeg.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
index 1de0400750aa..d8d24c19f423 100644
--- a/drivers/media/platform/imx-jpeg/mxc-jpeg.c
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
@@ -1245,8 +1245,7 @@ static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q)
 	}
 }
 
-static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
-			  u8 *src_addr, u32 size, bool *dht_needed)
+static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx, struct vb2_buffer *vb)
 {
 	struct device *dev = ctx->mxc_jpeg->dev;
 	struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
@@ -1256,6 +1255,9 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
 	struct v4l2_jpeg_header header;
 	struct mxc_jpeg_sof *psof = NULL;
 	struct mxc_jpeg_sos *psos = NULL;
+	struct mxc_jpeg_src_buf *jpeg_src_buf = vb2_to_mxc_buf(vb);
+	u8 *src_addr = (u8 *)vb2_plane_vaddr(vb, 0);
+	u32 size = vb2_get_plane_payload(vb, 0);
 	int ret;
 
 	memset(&header, 0, sizeof(header));
@@ -1266,7 +1268,7 @@ static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
 	}
 
 	/* if DHT marker present, no need to inject default one */
-	*dht_needed = (header.num_dht == 0);
+	jpeg_src_buf->dht_needed = (header.num_dht == 0);
 
 	q_data_out = mxc_jpeg_get_q_data(ctx,
 					 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
@@ -1381,10 +1383,7 @@ static void mxc_jpeg_buf_queue(struct vb2_buffer *vb)
 
 	jpeg_src_buf = vb2_to_mxc_buf(vb);
 	jpeg_src_buf->jpeg_parse_error = false;
-	ret = mxc_jpeg_parse(ctx,
-			     (u8 *)vb2_plane_vaddr(vb, 0),
-			     vb2_get_plane_payload(vb, 0),
-			     &jpeg_src_buf->dht_needed);
+	ret = mxc_jpeg_parse(ctx, vb);
 	if (ret)
 		jpeg_src_buf->jpeg_parse_error = true;
 
-- 
2.33.0