linux-kernel - [RFCv1 05/12] media: mtk-vcodec: support single-buffer frames

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Date:   Tue, 28 May 2019 14:56:28 +0900
From:   Alexandre Courbot <acourbot@...omium.org>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Alexandre Courbot <acourbot@...omium.org>
Subject: [RFCv1 05/12] media: mtk-vcodec: support single-buffer frames

From: Yunfei Dong <yunfei.dong@...iatek.com>

MT8183 will use a multi-planar format backed by a single buffer. Adapt
the existing code to be able to handle such frames instead of assuming
each frame is backed by two buffers.

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
Co-developed-by: Alexandre Courbot <acourbot@...omium.org>
Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
[acourbot: refactor, cleanup and split]
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index 2175883e22d4..2fdf23ce8ac4 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -130,8 +130,9 @@ static struct vb2_buffer *get_display_buffer(struct mtk_vcodec_ctx *ctx)
 	if (dstbuf->used) {
 		vb2_set_plane_payload(&dstbuf->vb.vb2_buf, 0,
 					ctx->picinfo.fb_sz[0]);
-		vb2_set_plane_payload(&dstbuf->vb.vb2_buf, 1,
-					ctx->picinfo.fb_sz[1]);
+		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
+			vb2_set_plane_payload(&dstbuf->vb.vb2_buf, 1,
+						ctx->picinfo.fb_sz[1]);
 
 		mtk_v4l2_debug(2,
 				"[%d]status=%x queue id=%d to done_list %d",
@@ -402,7 +403,8 @@ static void mtk_vdec_worker(struct work_struct *work)
 		vdec_if_decode(ctx, NULL, NULL, &res_chg);
 		clean_display_buffer(ctx);
 		vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 0, 0);
-		vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 1, 0);
+		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
+			vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 1, 0);
 		dst_buf->flags |= V4L2_BUF_FLAG_LAST;
 		v4l2_m2m_buf_done(&dst_buf_info->vb, VB2_BUF_STATE_DONE);
 		clean_free_buffer(ctx);
@@ -1333,7 +1335,8 @@ static void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 
 	while ((dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx))) {
 		vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
-		vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
+		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
+			vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
 		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 	}
 
-- 
2.22.0.rc1.257.g3120a18244-goog