media: imx-jpeg: notify source chagne event when the first picture parsed

After gstreamer rework the dynamic resolution change handling, gstreamer
stop doing capture buffer allocation based on guesses and wait for the
source change event when available. It requires driver always notify
source change event in the initialization, even if the size parsed is
equal to the size set on capture queue. otherwise, the pipeline will be
stalled.

Currently driver may not notify source change event if the parsed format
and size are equal to those previously established, but it may stall the
gstreamer pipeline.

The link of gstreamer patch is
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4437

Fixes: b4e1fb8643da ("media: imx-jpeg: Support dynamic resolution change")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c
index 1fc6b3660bdd..64112b63298c 100644
--- a/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c
+++ b/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c
@@ -1348,7 +1348,8 @@ static bool mxc_jpeg_source_change(struct mxc_jpeg_ctx *ctx,
 	q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 	if (mxc_jpeg_compare_format(q_data_cap->fmt, jpeg_src_buf->fmt))
 		jpeg_src_buf->fmt = q_data_cap->fmt;
-	if (q_data_cap->fmt != jpeg_src_buf->fmt ||
+	if (ctx->need_initial_source_change_evt ||
+	    q_data_cap->fmt != jpeg_src_buf->fmt ||
 	    q_data_cap->w != jpeg_src_buf->w ||
 	    q_data_cap->h != jpeg_src_buf->h) {
 		dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n",
@@ -1392,6 +1393,7 @@ static bool mxc_jpeg_source_change(struct mxc_jpeg_ctx *ctx,
 		mxc_jpeg_sizeimage(q_data_cap);
 		notify_src_chg(ctx);
 		ctx->source_change = 1;
+		ctx->need_initial_source_change_evt = false;
 		if (vb2_is_streaming(v4l2_m2m_get_dst_vq(ctx->fh.m2m_ctx)))
 			mxc_jpeg_set_last_buffer(ctx);
 	}
@@ -1611,6 +1613,9 @@ static int mxc_jpeg_queue_setup(struct vb2_queue *q,
 	for (i = 0; i < *nplanes; i++)
 		sizes[i] = mxc_jpeg_get_plane_size(q_data, i);
 
+	if (V4L2_TYPE_IS_OUTPUT(q->type))
+		ctx->need_initial_source_change_evt = true;
+
 	return 0;
 }