media: vivid: Add metadata capture support

This patch adds meatadata capture support in vivid driver.
Adds new files for metadata capture.
Adds vivid controls to generate PTS and SCR for metadata stream.
also fixes v4l2-compliance issues seen on metadata device.

Signed-off-by: Vandana BN <bnvandana@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

1 files changed, 48 insertions, 6 deletions

diff --git a/drivers/media/platform/vivid/vivid-kthread-cap.c b/drivers/media/platform/vivid/vivid-kthread-cap.c
index 003319d7816d..9f981e8bae6e 100644
--- a/drivers/media/platform/vivid/vivid-kthread-cap.c
+++ b/drivers/media/platform/vivid/vivid-kthread-cap.c
@@ -39,6 +39,7 @@
 #include "vivid-osd.h"
 #include "vivid-ctrls.h"
 #include "vivid-kthread-cap.h"
+#include "vivid-meta-cap.h"
 
 static inline v4l2_std_id vivid_get_std_cap(const struct vivid_dev *dev)
 {
@@ -677,6 +678,7 @@ static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev,
 {
 	struct vivid_buffer *vid_cap_buf = NULL;
 	struct vivid_buffer *vbi_cap_buf = NULL;
+	struct vivid_buffer *meta_cap_buf = NULL;
 	u64 f_time = 0;
 
 	dprintk(dev, 1, "Video Capture Thread Tick\n");
@@ -704,15 +706,19 @@ static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev,
 			list_del(&vbi_cap_buf->list);
 		}
 	}
+	if (!list_empty(&dev->meta_cap_active)) {
+		meta_cap_buf = list_entry(dev->meta_cap_active.next,
+					  struct vivid_buffer, list);
+		list_del(&meta_cap_buf->list);
+	}
+
 	spin_unlock(&dev->slock);
 
-	if (!vid_cap_buf && !vbi_cap_buf)
+	if (!vid_cap_buf && !vbi_cap_buf && !meta_cap_buf)
 		goto update_mv;
 
 	f_time = dev->cap_frame_period * dev->vid_cap_seq_count +
 		 dev->cap_stream_start + dev->time_wrap_offset;
-	if (!dev->tstamp_src_is_soe)
-		f_time += dev->cap_frame_eof_offset;
 
 	if (vid_cap_buf) {
 		v4l2_ctrl_request_setup(vid_cap_buf->vb.vb2_buf.req_obj.req,
@@ -735,6 +741,8 @@ static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev,
 				vid_cap_buf->vb.vb2_buf.index);
 
 		vid_cap_buf->vb.vb2_buf.timestamp = f_time;
+		if (!dev->tstamp_src_is_soe)
+			vid_cap_buf->vb.vb2_buf.timestamp += dev->cap_frame_eof_offset;
 	}
 
 	if (vbi_cap_buf) {
@@ -756,8 +764,22 @@ static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev,
 		/* If capturing a VBI, offset by 0.05 */
 		vbi_period = dev->cap_frame_period * 5;
 		do_div(vbi_period, 100);
-		vbi_cap_buf->vb.vb2_buf.timestamp = f_time + vbi_period;
+		vbi_cap_buf->vb.vb2_buf.timestamp = f_time + dev->cap_frame_eof_offset + vbi_period;
+	}
+
+	if (meta_cap_buf) {
+		v4l2_ctrl_request_setup(meta_cap_buf->vb.vb2_buf.req_obj.req,
+					&dev->ctrl_hdl_meta_cap);
+		vivid_meta_cap_fillbuff(dev, meta_cap_buf, f_time);
+		v4l2_ctrl_request_complete(meta_cap_buf->vb.vb2_buf.req_obj.req,
+					   &dev->ctrl_hdl_meta_cap);
+		vb2_buffer_done(&meta_cap_buf->vb.vb2_buf, dev->dqbuf_error ?
+				VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
+		dprintk(dev, 2, "meta_cap %d done\n",
+			meta_cap_buf->vb.vb2_buf.index);
+		meta_cap_buf->vb.vb2_buf.timestamp = f_time + dev->cap_frame_eof_offset;
 	}
+
 	dev->dqbuf_error = false;
 
 update_mv:
@@ -835,6 +857,7 @@ static int vivid_thread_vid_cap(void *data)
 		dev->cap_seq_count = buffers_since_start + dev->cap_seq_offset;
 		dev->vid_cap_seq_count = dev->cap_seq_count - dev->vid_cap_seq_start;
 		dev->vbi_cap_seq_count = dev->cap_seq_count - dev->vbi_cap_seq_start;
+		dev->meta_cap_seq_count = dev->cap_seq_count - dev->meta_cap_seq_start;
 
 		vivid_thread_vid_cap_tick(dev, dropped_bufs);
 
@@ -883,8 +906,10 @@ int vivid_start_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming)
 
 		if (pstreaming == &dev->vid_cap_streaming)
 			dev->vid_cap_seq_start = seq_count;
-		else
+		else if (pstreaming == &dev->vbi_cap_streaming)
 			dev->vbi_cap_seq_start = seq_count;
+		else
+			dev->meta_cap_seq_start = seq_count;
 		*pstreaming = true;
 		return 0;
 	}
@@ -894,6 +919,7 @@ int vivid_start_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming)
 
 	dev->vid_cap_seq_start = dev->seq_wrap * 128;
 	dev->vbi_cap_seq_start = dev->seq_wrap * 128;
+	dev->meta_cap_seq_start = dev->seq_wrap * 128;
 
 	dev->kthread_vid_cap = kthread_run(vivid_thread_vid_cap, dev,
 			"%s-vid-cap", dev->v4l2_dev.name);
@@ -951,7 +977,23 @@ void vivid_stop_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming)
 		}
 	}
 
-	if (dev->vid_cap_streaming || dev->vbi_cap_streaming)
+	if (pstreaming == &dev->meta_cap_streaming) {
+		while (!list_empty(&dev->meta_cap_active)) {
+			struct vivid_buffer *buf;
+
+			buf = list_entry(dev->meta_cap_active.next,
+					 struct vivid_buffer, list);
+			list_del(&buf->list);
+			v4l2_ctrl_request_complete(buf->vb.vb2_buf.req_obj.req,
+						   &dev->ctrl_hdl_meta_cap);
+			vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+			dprintk(dev, 2, "meta_cap buffer %d done\n",
+				buf->vb.vb2_buf.index);
+		}
+	}
+
+	if (dev->vid_cap_streaming || dev->vbi_cap_streaming ||
+	    dev->meta_cap_streaming)
 		return;
 
 	/* shutdown control thread */