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Subject[PATCH v3] media: staging/imx: fill vb2_v4l2_buffer sequence entry
Date
Enables gstreamer v4l2src lost frame detection, e.g:

0:00:08.685185668 348 0x54f520 WARN v4l2src gstv4l2src.c:970:gst_v4l2src_create:<v4l2src0> lost frames detected: count = 141 - ts: 0:00:08.330177332

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
---
Changes in v2:
- fill vb2_v4l2_buffer sequence entry in imx-ic-prpencvf too
(suggested by Steve Longerbeam)

Changes in v3:
- add changelog (suggested by Greg Kroah-Hartman, Fabio Estevam
and Dan Carpenter) and patch history
- use u32 (instead of __u32) (suggested by Dan Carpenter)
- let sequence counter start with zero, keeping v4l2-compliance
testing happy (needs additional setting of field to a valid
value, patch will follow soon)
---
drivers/staging/media/imx/imx-ic-prpencvf.c | 5 +++++
drivers/staging/media/imx/imx-media-csi.c | 5 +++++
2 files changed, 10 insertions(+)

diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index ae453fd422f0..274683d2d4ba 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
@@ -103,6 +103,7 @@ struct prp_priv {
int nfb4eof_irq;

int stream_count;
+ u32 frame_sequence; /* frame sequence counter */
bool last_eof; /* waiting for last EOF at stream off */
bool nfb4eof; /* NFB4EOF encountered during streaming */
struct completion last_eof_comp;
@@ -208,8 +209,11 @@ static void prp_vb2_buf_done(struct prp_priv *priv, struct ipuv3_channel *ch)
struct vb2_buffer *vb;
dma_addr_t phys;

+ priv->frame_sequence++;
+
done = priv->active_vb2_buf[priv->ipu_buf_num];
if (done) {
+ done->vbuf.sequence = priv->frame_sequence;
vb = &done->vbuf.vb2_buf;
vb->timestamp = ktime_get_ns();
vb2_buffer_done(vb, priv->nfb4eof ?
@@ -637,6 +641,7 @@ static int prp_start(struct prp_priv *priv)

/* init EOF completion waitq */
init_completion(&priv->last_eof_comp);
+ priv->frame_sequence = -1;
priv->last_eof = false;
priv->nfb4eof = false;

diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 5a195f80a24d..161a92946a86 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -111,6 +111,7 @@ struct csi_priv {
struct v4l2_ctrl_handler ctrl_hdlr;

int stream_count; /* streaming counter */
+ u32 frame_sequence; /* frame sequence counter */
bool last_eof; /* waiting for last EOF at stream off */
bool nfb4eof; /* NFB4EOF encountered during streaming */
struct completion last_eof_comp;
@@ -234,8 +235,11 @@ static void csi_vb2_buf_done(struct csi_priv *priv)
struct vb2_buffer *vb;
dma_addr_t phys;

+ priv->frame_sequence++;
+
done = priv->active_vb2_buf[priv->ipu_buf_num];
if (done) {
+ done->vbuf.sequence = priv->frame_sequence;
vb = &done->vbuf.vb2_buf;
vb->timestamp = ktime_get_ns();
vb2_buffer_done(vb, priv->nfb4eof ?
@@ -543,6 +547,7 @@ static int csi_idmac_start(struct csi_priv *priv)

/* init EOF completion waitq */
init_completion(&priv->last_eof_comp);
+ priv->frame_sequence = -1;
priv->last_eof = false;
priv->nfb4eof = false;

--
2.16.2
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