[media] coda: fix job_ready debug reporting for bitstream decoding

Clarify whether job_ready returns false because the context is on hold, waiting
for new input buffers, whether there are not enough input buffers to fill two
into the bitstream, or whether there is not enough data in the bitstream buffer
for the bitstream reader hardware to read a whole frame.

Signed-off-by: Philipp Zabel <[email protected]>
Signed-off-by: Kamil Debski <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

1 files changed, 37 insertions, 9 deletions

diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c
index 8b4bd88af290..14953b4df586 100644
--- a/drivers/media/platform/coda/coda-common.c
+++ b/drivers/media/platform/coda/coda-common.c
@@ -939,15 +939,43 @@ static int coda_job_ready(void *m2m_priv)
 		return 0;
 	}
 
-	if (ctx->hold ||
-	    ((ctx->inst_type == CODA_INST_DECODER) &&
-	     !v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) &&
-	     (coda_get_bitstream_payload(ctx) < 512) &&
-	     !(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
-		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
-			 "%d: not ready: not enough bitstream data.\n",
-			 ctx->idx);
-		return 0;
+	if (ctx->inst_type == CODA_INST_DECODER) {
+		struct list_head *meta;
+		bool stream_end;
+		int num_metas;
+		int src_bufs;
+
+		if (ctx->hold && !v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx)) {
+			v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+				 "%d: not ready: on hold for more buffers.\n",
+				 ctx->idx);
+			return 0;
+		}
+
+		stream_end = ctx->bit_stream_param &
+			     CODA_BIT_STREAM_END_FLAG;
+
+		num_metas = 0;
+		list_for_each(meta, &ctx->buffer_meta_list)
+			num_metas++;
+
+		src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
+
+		if (!stream_end && (num_metas + src_bufs) < 2) {
+			v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+				 "%d: not ready: need 2 buffers available (%d, %d)\n",
+				 ctx->idx, num_metas, src_bufs);
+			return 0;
+		}
+
+
+		if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) &&
+		    !stream_end && (coda_get_bitstream_payload(ctx) < 512)) {
+			v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+				 "%d: not ready: not enough bitstream data (%d).\n",
+				 ctx->idx, coda_get_bitstream_payload(ctx));
+			return 0;
+		}
 	}
 
 	if (ctx->aborting) {