linux-kernel - [PATCH RESEND v9 08/18] media: platform: Cancel the last frame handling flow

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Date:   Thu, 4 Jun 2020 17:05:43 +0800
From:   Xia Jiang <xia.jiang@...iatek.com>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rick Chang <rick.chang@...iatek.com>
CC:     <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Tomasz Figa <tfiga@...omium.org>,
        <srv_heupstream@...iatek.com>, <senozhatsky@...omium.org>,
        <mojahsu@...omium.org>, <drinkcat@...omium.org>,
        <maoguang.meng@...iatek.com>, <sj.huang@...iatek.com>,
        Xia Jiang <xia.jiang@...iatek.com>
Subject: [PATCH RESEND v9 08/18] media: platform: Cancel the last frame handling flow

There is no need to queue an empty buffer for signaling a last frame,
because all frames are separate from each other in JPEG.

Signed-off-by: Xia Jiang <xia.jiang@...iatek.com>
---
v9: new patch
---
 .../media/platform/mtk-jpeg/mtk_jpeg_core.c   | 21 +------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index 49bdbf1c435f..bb4ebce881ee 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
@@ -55,15 +55,9 @@ static struct mtk_jpeg_fmt mtk_jpeg_formats[] = {
 
 #define MTK_JPEG_NUM_FORMATS ARRAY_SIZE(mtk_jpeg_formats)
 
-enum {
-	MTK_JPEG_BUF_FLAGS_INIT			= 0,
-	MTK_JPEG_BUF_FLAGS_LAST_FRAME		= 1,
-};
-
 struct mtk_jpeg_src_buf {
 	struct vb2_v4l2_buffer b;
 	struct list_head list;
-	int flags;
 	struct mtk_jpeg_dec_param dec_param;
 };
 
@@ -520,8 +514,6 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 
 	vb = vb2_get_buffer(vq, buf->index);
 	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
-	jpeg_src_buf->flags = (buf->m.planes[0].bytesused == 0) ?
-		MTK_JPEG_BUF_FLAGS_LAST_FRAME : MTK_JPEG_BUF_FLAGS_INIT;
 end:
 	return v4l2_m2m_qbuf(file, fh->m2m_ctx, buf);
 }
@@ -676,10 +668,6 @@ static void mtk_jpeg_buf_queue(struct vb2_buffer *vb)
 	param = &jpeg_src_buf->dec_param;
 	memset(param, 0, sizeof(*param));
 
-	if (jpeg_src_buf->flags & MTK_JPEG_BUF_FLAGS_LAST_FRAME) {
-		v4l2_dbg(1, debug, &jpeg->v4l2_dev, "Got eos\n");
-		goto end;
-	}
 	header_valid = mtk_jpeg_parse(param, (u8 *)vb2_plane_vaddr(vb, 0),
 				      vb2_get_plane_payload(vb, 0));
 	if (!header_valid) {
@@ -792,19 +780,12 @@ static void mtk_jpeg_device_run(void *priv)
 	struct mtk_jpeg_src_buf *jpeg_src_buf;
 	struct mtk_jpeg_bs bs;
 	struct mtk_jpeg_fb fb;
-	int i, ret;
+	int ret;
 
 	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
 	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
 
-	if (jpeg_src_buf->flags & MTK_JPEG_BUF_FLAGS_LAST_FRAME) {
-		for (i = 0; i < dst_buf->vb2_buf.num_planes; i++)
-			vb2_set_plane_payload(&dst_buf->vb2_buf, i, 0);
-		buf_state = VB2_BUF_STATE_DONE;
-		goto dec_end;
-	}
-
 	if (mtk_jpeg_check_resolution_change(ctx, &jpeg_src_buf->dec_param)) {
 		mtk_jpeg_queue_src_chg_event(ctx);
 		ctx->state = MTK_JPEG_SOURCE_CHANGE;
-- 
2.18.0